Abstract

The present invention relates to a coating method wherein a silicone composition crosslinkable by polyaddition reactions is used to form a silicone elastomer on an open-work and/or elastic textile medium. The crosslinking of the silicone composition is obtained by irradiating with UV radiation, the source of which is a UV-LED lamp.

IPC Classes  ?

• D06M 15/643 - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
• C08G 77/12 - Polysiloxanes containing silicon bound to hydrogen
• C08G 77/20 - Polysiloxanes containing silicon bound to unsaturated aliphatic groups
• C08L 83/04 - Polysiloxanes
• C09D 183/04 - Polysiloxanes
• D06M 10/00 - Physical treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents or magnetic fieldsPhysical treatment combined with treatment with chemical compounds or elements
• D06M 10/10 - Macromolecular compounds
• D06M 11/79 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts

Abstract

The present invention relates to hydrosilylation reactions between a monosubstituted alkene compound and a compound comprising at least one hydrogen atom bonded to a silicon atom. More specifically, the invention relates to a process for the hydrosilylation of an unsaturated compound (A) that comprises at least one monosubstituted alkene function with a compound (B) that comprises at least one hydrosilane function, said process comprising the step of exposing said unsaturated compound (A) and said compound (B) to irradiation in the presence of a photocatalyst (C) consisting of a manganese carbonyl. This hydrosilylation reaction between an alkene compound and a compound comprising at least one hydrogen atom bonded to a silicon atom makes it possible, in particular, to cure silicone compositions by crosslinking.

IPC Classes  ?

• C07F 7/08 - Compounds having one or more C—Si linkages
• B01J 23/34 - Manganese

Abstract

The present application relates to a process for preparing cyclic organopolysiloxane OC by depolymerization of at least one organopolysiloxane O selected from: - linear organopolysiloxanes, - branched organopolysiloxanes, - crosslinked organopolysiloxanes, or mixtures thereof; in the presence of a solvent, catalyzed by an alkali salt SA selected from alkali silanolates, alkali siliconates, or mixtures thereof, in which the amount of alkali salt used is between 0.01 and 2% by weight relative to the weight of organopolysiloxane O.

IPC Classes  ?

• C08G 77/04 - Polysiloxanes
• C08J 11/22 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic oxygen-containing compounds

Abstract

A new process is described for preparing silicone foam, ideal for the manufacture of articles in the field of construction, transport, electrical insulation or household appliances, particularly as padding material for seats in the field of transport. This method includes a step (a) of preparing a silicone composition capable of forming a foam by releasing a gas, a step (b) including introducing the silicone composition into a closed mold, and a step (c) including allowing the silicone composition to crosslink and/or harden to obtain the silicone foam, the walls of the mold being permeable to gas at least during all or part of the step of crosslinking and/or hardening of said silicone composition.

IPC Classes  ?

• C08J 9/12 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
• B29C 35/02 - Heating or curing, e.g. crosslinking or vulcanising
• B29C 44/58 - Moulds
• B29K 83/00 - Use of polymers having silicon, with or without sulfur, nitrogen, oxygen or carbon only, in the main chain, as moulding material
• C08J 9/00 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof

Abstract

The invention relates to a method for producing linear organopolysiloxanes OL by means of a polymerization reaction from organopolysiloxanes O (cyclic and/or linear), and using a catalytic system AI. More precisely, the method of the present invention can be used to obtain linear organopolysiloxanes OL having a controlled molar mass and with a very low level of residual cyclic organopolysiloxanes. The present application also relates to the linear organopolysiloxane OL obtained according to the various embodiments of the method of the present invention described.

IPC Classes  ?

• C08G 77/08 - Preparatory processes characterised by the catalysts used

Abstract

Provided is a method for preparing linear organopolysiloxanes OL by means of a ring-opening polymerization reaction from cyclic organopolysiloxanes OC, and using a basic catalyst B. More specifically, the method according to the present invention makes it possible to obtain controlled molar mass linear organopolysiloxanes OL with a very low cyclic content. The invention also relates to the composition S1 used in the context of the method of the present invention.

IPC Classes  ?

• C08G 77/08 - Preparatory processes characterised by the catalysts used

Abstract

The invention relates to a method for producing linear organopoly siloxanes OL by means of a polymerization reaction from organopoly siloxanes O (cyclic and/or linear), and using a catalytic system AI. More precisely, the method of the present invention makes it possible to obtain linear organopoly siloxanes OL having a controlled molar mass with a very low residual rate of residual cyclic organopoly siloxanes. The present application also relates to the linear organopoly siloxane OL obtained according to the various embodiments of the method of the present invention described above.

IPC Classes  ?

• C07D 233/20 - Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with substituted hydrocarbon radicals, directly attached to ring carbon atoms
• C08G 77/16 - Polysiloxanes containing silicon bound to oxygen-containing groups to hydroxy groups
• C08K 5/3445 - Five-membered rings

Abstract

The invention relates to an additive manufacturing process for producing a silicone elastomer item. In particular, the invention relates to an additive manufacturing method for producing a silicone elastomer item from a photocrosslinkable silicone composition. The invention also relates to a photocrosslinkable silicone composition.

IPC Classes  ?

• B29C 64/124 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
• B29K 83/00 - Use of polymers having silicon, with or without sulfur, nitrogen, oxygen or carbon only, in the main chain, as moulding material
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• C08G 77/14 - Polysiloxanes containing silicon bound to oxygen-containing groups
• C08K 3/36 - Silica
• C08K 5/00 - Use of organic ingredients
• C09D 7/61 - Additives non-macromolecular inorganic
• C09D 183/06 - Polysiloxanes containing silicon bound to oxygen-containing groups

Abstract

The present invention relates to a process for hydrosilylating an unsaturated compound with a compound comprising at least one hydrogenosilyl function catalysed by organic cobalt compounds in the presence of a compound (E) having the formula (3): R′—OH (3), wherein R′ represents the hydrogen atom or R′ is chosen from the group consisting of alkyl groups having 1 to 8 carbon atoms, cycloalkyl groups having 6 to 12 carbon atoms, aryl groups having 6 to 12 carbon atoms, aryl-alkyl groups, and silyl groups.

IPC Classes  ?

• C07F 7/08 - Compounds having one or more C—Si linkages
• B01J 31/18 - Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes containing nitrogen, phosphorus, arsenic or antimony
• B01J 37/03 - PrecipitationCo-precipitation
• C07F 9/58 - Pyridine rings
• C07F 15/06 - Cobalt compounds

Abstract

The present invention relates to a method for preparing linear organopolysiloxanes OL via a ring-opening polymerisation reaction of at least one cyclic organopolysiloxane CO in the presence of a catalytic system AI comprising: at least one catalyst A of formula (I); and at least one initiator I chosen from among alcohols and derivatives thereof, silanols and derivatives thereof, or mixtures thereof. The invention also relates to the use of the linear organopolysiloxanes LO obtained thereby in various silicone formulations that can be used in, inter alia, the field of cosmetics, household cleaning products, motor vehicles and energy.

IPC Classes  ?

• C08G 77/04 - Polysiloxanes
• C08G 77/16 - Polysiloxanes containing silicon bound to oxygen-containing groups to hydroxy groups
• C08K 5/5399 - Phosphorus bound to nitrogen
• C08K 5/5415 - Silicon-containing compounds containing oxygen containing at least one Si—O bond
• C08L 83/04 - Polysiloxanes
• C07F 9/535 - Organo-phosphoranes
• C07F 9/54 - Quaternary phosphonium compounds

Abstract

The invention relates to a method for preparing a composition X comprising at least one organopolysiloxane A comprising at least one (meth)acrylate group, said method comprising the following steps: a) reacting at a temperature between 50°C and 130°C, preferably between 70°C and 130°C and even more preferentially between 90°C and 125°C, at least one organopolysiloxane E comprising at least one epoxy group with acrylic acid or methacrylic acid or a mixture of the two, and in the presence: - of a catalyst C which is a complex of chromium in the (III) oxidation state of the following formula (1): [CrL133] (1) in which the L1 symbols, which may be identical or different, represent a β-diketonate anion, and - of an inhibitor for the polymerization of acrylic acid or methacrylic acid, b) devolatilizing the reaction medium obtained on conclusion of step a), c) obtaining said composition X comprising at least one organopolysiloxane A.

IPC Classes  ?

• C08G 77/14 - Polysiloxanes containing silicon bound to oxygen-containing groups
• C08G 77/20 - Polysiloxanes containing silicon bound to unsaturated aliphatic groups
• C08G 77/38 - Polysiloxanes modified by chemical after-treatment
• C08K 5/09 - Carboxylic acidsMetal salts thereofAnhydrides thereof
• C08K 5/56 - Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond
• C09D 183/10 - Block or graft copolymers containing polysiloxane sequences

Abstract

The invention relates to a type I photoinitiator for the free-radical curing of radiation-curable compositions. In particular, the invention relates to a silicone composition comprising a type I photoinitiator and an organopolysiloxane having at least one (meth)acrylate group.

IPC Classes  ?

• C08F 130/08 - Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal containing silicon
• C07C 69/24 - Esters of acyclic saturated monocarboxylic acids having the carboxyl group bound to an acyclic carbon atom or to hydrogen having three or more carbon atoms in the acid moiety esterified with monohydroxylic compounds
• C08J 3/28 - Treatment by wave energy or particle radiation
• C08K 5/101 - EstersEther-esters of monocarboxylic acids
• C09D 143/04 - Homopolymers or copolymers of monomers containing silicon

Abstract

The present invention relates to a process for manufacturing a silicone elastomer article comprising the following step:1) providing a composition C, comprising water, at least one poloxamer and a poly(oxyalkylene glycol), into a container; 2) placing the container comprising the composition C at the required temperature T1 to form a gel; 3) printing a crosslinkable silicone composition X into the gel obtained in 2) with a 3D printer at the required temperature T1; 4) optionally allowing the printed composition X to partially or totally crosslink, optionally by heating, to obtain a silicone elastomer article, in the container; 5) optionally placing the container obtained in step 4) at a temperature T3 lower than the sol-gel transition temperature of composition C; 6) recovering the silicone elastomer article; and 7) optionally washing the obtained silicone elastomer article for example with water at a temperature T3 lower than the sol-gel transition temperature of composition C.

IPC Classes  ?

• C08L 71/02 - Polyalkylene oxides
• B29C 64/30 - Auxiliary operations or equipment
• B29K 23/00 - Use of polyalkenes as moulding material
• B29K 83/00 - Use of polymers having silicon, with or without sulfur, nitrogen, oxygen or carbon only, in the main chain, as moulding material
• B29K 105/00 - Condition, form or state of moulded material
• B33Y 40/20 - Post-treatment, e.g. curing, coating or polishing
• B33Y 70/00 - Materials specially adapted for additive manufacturing

Abstract

The present invention relates to a method for hydrosilylation of an unsaturated compound comprising at least one alkene function or one alkyne function with a compound comprising at least one hydrosilane function, said method being catalysed by an iron complex represented by the formula Fe[Si(SiR3)3]2 Ln, wherein each R is a hydrogen atom or a hydrocarbon group having 1 to 30 carbon atoms, optionally substituted by one or more halogen atoms, each L is an ether ligand, and n=1, 2 or 3. The present invention also relates to a method for preparing said iron complex, as well as to the use thereof as a catalyst for the hydrosilylation of an alkene or alkyne.

IPC Classes  ?

• C08G 77/08 - Preparatory processes characterised by the catalysts used
• B01J 31/22 - Organic complexes
• B01J 37/00 - Processes, in general, for preparing catalystsProcesses, in general, for activation of catalysts

Abstract

The invention relates to a novel functionalized or ganopoly siloxane compound having a polysiloxane main chain, (meth)acrylic groups and hydrophilic polyether groups. The invention further relates to a method for manufacturing said functionalized organopolysiloxane, and to its use, as such or in the preparation of silicone gels, rubbers, coatings and emulsions, useful in different applications such as cosmetics, personal care, medical, house care, textile, electronics, coatings, construction, surfactants, antifoams, emulsifiers, ophthalmic lens material.

IPC Classes  ?

• C08G 77/14 - Polysiloxanes containing silicon bound to oxygen-containing groups
• C08G 77/20 - Polysiloxanes containing silicon bound to unsaturated aliphatic groups
• C08G 77/46 - Block- or graft-polymers containing polysiloxane sequences containing polyether sequences

Abstract

The invention relates to a passive fire protection device, said device comprising at least one strip comprising a silicone foam having a density of less than 0.20 g/cm3. Said passive fire protection device is particularly useful for the protection of equipment important for the security and safety of an installation, for example cables, cable troughs, ventilation and smoke removal ducts, feedthroughs, joints and cabinets.

IPC Classes  ?

• B32B 1/08 - Tubular products
• B32B 5/24 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer

Abstract

The invention relates to an additive manufacturing method for producing a silicone elastomer article, the method comprising the following steps: providing a photocrosslinkable silicone composition X and an irradiation source, the photocrosslinkable silicone composition X comprising: a) at least one organopolysiloxane A including at least one (meth)acrylate group; b) at least one radical photoinitiator B of formula (I): c) at least one acyclic tertiary amine C; ii) selectively irradiating at least a portion of the photocrosslinkable silicone composition X by means of the irradiation source to form a portion of the silicone elastomer article; and iii) repeating step ii) enough times to produce the silicone elastomer article. The invention also relates to a photocrosslinkable silicone composition and to the use thereof.

IPC Classes  ?

• C09D 183/06 - Polysiloxanes containing silicon bound to oxygen-containing groups
• B33Y 10/00 - Processes of additive manufacturing

Abstract

The present invention relates to hydrosilylation reactions between a monosubstituted alkene compound and a compound comprising at least one hydrogen atom bonded to a silicon atom. More specifically, the invention relates to a process for hydrosilylation of an unsaturated compound A comprising at least one monosubstituted alkene function with a compound B comprising at least one hydrosilyl function, catalysed by a manganese complex C having the oxidation state I, in the presence of air and/or water. This hydrosilylation reaction between an alkene compound and a compound comprising at least one hydrogen atom bonded to a silicon atom makes it possible in particular to crosslink silicone compositions.

IPC Classes  ?

• C08G 77/08 - Preparatory processes characterised by the catalysts used
• C08L 83/04 - Polysiloxanes
• B01J 31/22 - Organic complexes

Abstract

The present invention generally relates to the reuse, reprocessing or recycling of silicone polymers. More precisely, the process of the present invention relates to a method for preparing organopolysiloxanes OR by a depolymerization reaction of at least one silicone S in the presence of an acid catalyst and at least one chain blocker Bc having at least one siloxane function. These organopolysiloxanes OR can subsequently be used in polymerization reactions or directly in various formulations.

IPC Classes  ?

• C08J 11/22 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic oxygen-containing compounds
• C08G 77/38 - Polysiloxanes modified by chemical after-treatment
• C08J 11/28 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic compounds containing nitrogen, sulfur or phosphorus
• C07F 7/08 - Compounds having one or more C—Si linkages

Abstract

The present invention relates to a photo-curable silicone composition comprising a release control additive which is an organopolysiloxane resin comprising Si—OH groups. In particular, the invention relates to a silicone composition comprising at least one organopolysiloxane A including at least one (meth)acrylate group, at least 25% by weight of an organopolysiloxane resin B comprising Si—OH groups, and at least one radical photoinitiator C. The compositions of the invention can be used to form release coatings.

IPC Classes  ?

• C09D 5/16 - Anti-fouling paintsUnderwater paints
• C08G 77/16 - Polysiloxanes containing silicon bound to oxygen-containing groups to hydroxy groups
• C08G 77/20 - Polysiloxanes containing silicon bound to unsaturated aliphatic groups
• C08G 77/442 - Block- or graft-polymers containing polysiloxane sequences containing vinyl polymer sequences
• C09D 183/10 - Block or graft copolymers containing polysiloxane sequences

Abstract

The invention relates to a method for the additive manufacturing of a cured elastomer article. In particular, the invention relates to a method for the additive manufacturing of a 3-dimensional cured material and a support using a 3D printer.

IPC Classes  ?

• B29C 64/40 - Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof
• B29C 64/106 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
• B29C 64/336 - Feeding of two or more materials

Abstract

The present invention relates to a method of post-treatment of a 3D-printed silicone article, said method comprising the coating the 3D-printed silicone article with a crosslinkable silicone composition comprising a microfiller. The invention further relates to a crosslinkable silicone composition comprising a microfiller, and its use as post-treatment composition for the post-treatment of a 3D printed silicone article.

IPC Classes  ?

• B33Y 40/20 - Post-treatment, e.g. curing, coating or polishing
• C09D 183/04 - Polysiloxanes

Abstract

The invention relates to an additive manufacturing method for producing a silicone elastomer article, the method comprising the following steps: i) providing a photocrosslinkable silicone composition X and an irradiation source, said photocrosslinkable silicone composition X comprising: a) at least one organopolysiloxane A including at least one (meth)acrylate group, and b) at least one radical photoinitiator B as defined in the present invention; ii) selectively irradiating at least a portion of the photocrosslinkable silicone composition X by means of the irradiation source to form a portion of the silicone elastomer article; and iii) repeating step ii) enough times to produce the silicone elastomer article.

IPC Classes  ?

• C08G 77/30 - Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen phosphorus-containing groups
• C08G 77/395 - Polysiloxanes modified by chemical after-treatment containing atoms other than carbon, hydrogen, oxygen or silicon containing phosphorus
• C08L 83/04 - Polysiloxanes
• B33Y 10/00 - Processes of additive manufacturing

Abstract

The invention relates to a process for preparing a polyurea or a polyurethane organopolysiloxane block copolymer having a silicone content of at least 90% in weight relative to the total weight of the organosiloxane block copolymer. The invention further relates to a a polyurea or a polyurethane organopolysiloxane block copolymer obtained according to this process and its use in a method for manufacturing a 3D article by an additive technique.

IPC Classes  ?

• C08G 77/458 - Block- or graft-polymers containing polysiloxane sequences containing nitrogen-containing sequences containing polyurethane sequences
• B33Y 70/00 - Materials specially adapted for additive manufacturing

Abstract

A medical silicone pressure-sensitive adhesive composition is described that includes: organopolysiloxane A, organopolysiloxane resin B, organopolysiloxane crosslinker XL, organopolysiloxane extender CE, hydrosilylation catalyst D, solvent E and hydrosilylation inhibitor F, wherein the organopolysiloxanes A, CE and XL are chosen such that the molar ratio RHAlk=tH/tAlk is 3.5 to 8; and nHXL/nHCE is within 0.13 to 11, with:—tH=number of moles of hydrogen atom directly bonded to a silicon atom of the organopolysiloxanes XL and CE;—tAlk=number of moles of alkenyl directly bonded to a silicon atom of the organopolysiloxane A;—nHXL=number of moles of hydrogen atom directly bonded to a silicon atom of the organopolysiloxane XL;—nHCE=number of moles of hydrogen atom directly bonded to a silicon atom of the organopolysiloxane CE. Also described, is a method for coating a substrate by using the medical silicone pressure-sensitive adhesive composition, a coated substrate obtainable according to the method, and also a skin-adhesive article made by using the medical silicone pressure-sensitive adhesive composition.

IPC Classes  ?

• A61L 24/04 - Surgical adhesives or cementsAdhesives for colostomy devices containing macromolecular materials

Abstract

The present application relates to a method for preparing organochorosilane CS by reacting at least one silicone S with a metal chloride or metalloid CM in the presence of at least one metal salt catalyst SM, wherein the metal chloride or metalloid CM is different from the metal salt SM.

IPC Classes  ?

• C08J 11/16 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with inorganic material
• C07F 7/12 - Organo silicon halides
• C08G 77/38 - Polysiloxanes modified by chemical after-treatment

IPC Classes  ?

• B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
• B32B 7/14 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties applied in spaced arrangements, e.g. in stripes
• B32B 15/08 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
• B32B 27/10 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of paper or cardboard
• B32B 27/28 - Layered products essentially comprising synthetic resin comprising copolymers of synthetic resins not wholly covered by any one of the following subgroups
• B32B 29/06 - Layered products essentially comprising paper or cardboard specially treated, e.g. surfaced, parchmentised
• B32B 29/08 - Corrugated paper or cardboard

Abstract

266 alkenyl radicals each bonded to a silicon atom, at least one organopolysiloxane resin B comprising OH group(s) bonded to silicone atoms, at least one organopolysiloxane extender CE having exactly two terminal- hydrogen atom bonded to silicone atoms, optionally at least one organopolysiloxane crosslinker XL having at least three hydrogen atoms bonded to silicone atoms, at least one hydrosilylation catalyst D, at least one solvent E, and optionally at least one hydrosilylation inhibitor F, wherein the organopolysiloxanes A, CE and XL are selected such that the molar ratio RHAlk is comprised from 2 to 5 and the ratio nHXL/nHCE is below 0.10.

IPC Classes  ?

• C09J 183/04 - Polysiloxanes
• C09J 183/05 - Polysiloxanes containing silicon bound to hydrogen
• C09J 183/07 - Polysiloxanes containing silicon bound to unsaturated aliphatic groups
• A61L 24/04 - Surgical adhesives or cementsAdhesives for colostomy devices containing macromolecular materials

Abstract

The invention relates to a method for additive manufacturing of a 3D article with a material jetting 3D printer, using a specific silicone composition, curable by thiol-ene reaction, and having a viscosity at 70°C of less than 100 mPa.s. Said curable silicone composition comprises at least one cyclic organopolysiloxane compound A having between 3 and 8 silicon atoms and at least two C2-C8 alkenyl radicals bonded to silicon atoms per molecule, or at least one cyclic organopolysiloxane compound A' having between 3 and 8 silicon atoms and at least two (meth)acrylate groups per molecule, at least one mercapto-containing organopolysiloxane compound B comprising, per molecule, at least two mercapto group, at least one photoinitiator C, and optionally at least one filler D. The invention further relates to use of said curable silicone composition as an ink for a method for additive manufacturing of a 3D article with a material jetting 3D printer.

IPC Classes  ?

• B33Y 10/00 - Processes of additive manufacturing
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• B33Y 80/00 - Products made by additive manufacturing
• C08L 83/04 - Polysiloxanes
• C08L 83/08 - Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen

Abstract

The invention relates to an article suitable for food contact, notably a food packaging, which comprises a first substrate and a second substrate which are joined by an adhesive, said first substrate comprising a support coated with a silicone coating suitable for food contact, said adhesive being inserted between the two substrates and being in contact with the silicone coating of said first substrate, characterized in that said adhesive is a structural silicone adhesive, suitable for food contact, obtained by crosslinking a polyaddition-crosslinkable silicone composition.

IPC Classes  ?

• B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
• B32B 7/14 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties applied in spaced arrangements, e.g. in stripes
• B32B 15/08 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
• B32B 27/10 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of paper or cardboard
• B32B 27/28 - Layered products essentially comprising synthetic resin comprising copolymers of synthetic resins not wholly covered by any one of the following subgroups
• B32B 29/06 - Layered products essentially comprising paper or cardboard specially treated, e.g. surfaced, parchmentised
• B32B 29/08 - Corrugated paper or cardboard

Abstract

22.

IPC Classes  ?

• B01J 31/16 - Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
• B01J 31/22 - Organic complexes
• C07F 15/00 - Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
• C08G 77/12 - Polysiloxanes containing silicon bound to hydrogen
• C08G 77/20 - Polysiloxanes containing silicon bound to unsaturated aliphatic groups
• C08J 3/28 - Treatment by wave energy or particle radiation
• C08L 83/04 - Polysiloxanes
• C09D 183/04 - Polysiloxanes

Abstract

The present invention relates to a process for preparing cyclic polysiloxane by reactive distillation of at least one organopolysiloxane in the presence of an alkaline salt catalyst selected from salts of K, Na, Rb or Cs, and a multidentate complexing agent.

IPC Classes  ?

• C08G 77/04 - Polysiloxanes
• C08J 11/16 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with inorganic material
• C08J 11/20 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with hydrocarbons or halogenated hydrocarbons
• C08J 11/22 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic oxygen-containing compounds
• C08G 77/08 - Preparatory processes characterised by the catalysts used
• C08G 77/10 - Equilibration processes
• C08L 83/04 - Polysiloxanes
• C08L 83/08 - Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen

Abstract

The present invention relates to a concentrated silicone-in-water antifoam emulsion, a preparation process and a process for inhibiting foam.

IPC Classes  ?

• C08L 83/04 - Polysiloxanes

Abstract

A crosslinkable silicone elastomer composition is described that includes a heat-resistant additive. In particular, a crosslinkable silicone elastomer composition is described that includes a heat-resistant additive that is cerium (IV) neodecanoate.

IPC Classes  ?

• C08L 83/04 - Polysiloxanes
• C08K 3/36 - Silica
• C08K 5/14 - Peroxides
• H01B 3/46 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes silicones

Abstract

Silicone compositions are described for the production of negative molds that include a silicone elastomer. The molds can be used in the production of molded articles.

IPC Classes  ?

• B29C 33/40 - Plastics, e.g. foam or rubber
• B29C 33/38 - Moulds or coresDetails thereof or accessories therefor characterised by the material or the manufacturing process
• C08G 77/08 - Preparatory processes characterised by the catalysts used

Abstract

Nanoparticles that can be used as hydrosilylation and dehydrogenative silylation catalysts. The nanoparticles have at least one transition metal with an oxidation state of 0, chosen from the metals of columns 8, 9 and 10 of the periodic table, and at least one carbonyl ligand, preferably a silicide.

IPC Classes  ?

• B01J 35/00 - Catalysts, in general, characterised by their form or physical properties
• B01J 31/16 - Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
• B01J 31/20 - Carbonyls
• B01J 35/02 - Solids
• B01J 35/23 - Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state in a colloidal state
• B01J 35/40 - Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
• B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
• B82Y 40/00 - Manufacture or treatment of nanostructures

Abstract

The present invention relates to organopolysiloxane compositions comprising an organopolysiloxane having, per molecule, at least two alkenyl groups, an organopolysiloxane having, per molecule, at least two SiH units, a hydrosilylation catalyst, and a thermally conductive filler, the thermally conductive filler comprising at least 40% by weigh of metallic silicon, and a specific particle size distribution. The invention further relates to a silicone elastomer which can be obtained by cross-linking and/or curing the composition, as well as its use as a thermally conductive material for coating or filling, in particular for the automotive field, in particular for the field of electric vehicles.

IPC Classes  ?

• C08L 83/04 - Polysiloxanes
• C08K 3/02 - Elements
• C08K 3/22 - OxidesHydroxides of metals
• C08J 3/24 - Crosslinking, e.g. vulcanising, of macromolecules

Abstract

The present invention relates to hydrosilylation reactions between a monosubstituted alkene compound and a compound comprising at least one hydrogen atom bonded to a silicon atom. More specifically, the invention relates to a process for the hydrosilylation of an unsaturated compound (A) that comprises at least one monosubstituted alkene function with a compound (B) that comprises at least one hydrosilane function, said process comprising the step of exposing said unsaturated compound (A) and said compound (B) to irradiation in the presence of a photocatalyst (C) consisting of a manganese carbonyl. This hydrosilylation reaction between an alkene compound and a compound comprising at least one hydrogen atom bonded to a silicon atom makes it possible, in particular, to cure silicone compositions by crosslinking.

IPC Classes  ?

• C07F 7/18 - Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
• C07F 13/00 - Compounds containing elements of Groups 7 or 17 of the Periodic Table
• C08K 5/00 - Use of organic ingredients

Abstract

The present invention relates to a novel method for preparing silicone foam, which is ideal for producing items in the fields of construction, transport, electrical insulation or household electrical goods, especially as an upholstery material for seats in the transport field. This method comprises a step (a) of preparing a silicone composition that is able to form a foam through the release of a gas; a step (b) of introducing this silicone composition into a closed mold; and a step (c) of crosslinking and/or curing this silicone composition to obtain the silicone foam, the walls of the mold being permeable to the gas at least for all or some of the step of crosslinking and/or curing this silicone composition.

IPC Classes  ?

• C08J 9/00 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof
• B29C 44/00 - Shaping by internal pressure generated in the material, e.g. swelling or foaming
• C08G 77/00 - Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon
• C08J 9/02 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by the reacting monomers or modifying agents during the preparation or modification of macromolecules
• B29C 44/58 - Moulds
• B29C 45/34 - Moulds having venting means
• B29C 33/10 - Moulds or coresDetails thereof or accessories therefor with incorporated venting means

Abstract

The present invention relates to a silicone composition X which is cross-linkable by polyaddition reactions to form a silicone elastomer. In particular, the present invention relates to a silicone composition X which is cross-linkable by irradiation, comprising at least one compound D selected from retinol, retinal, retinoic acid, retinol carboxylic acid esters, carotenes, and mixtures thereof.

IPC Classes  ?

• B01J 31/00 - Catalysts comprising hydrides, coordination complexes or organic compounds
• C07F 15/00 - Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
• C08L 83/04 - Polysiloxanes
• C09D 183/04 - Polysiloxanes
• C09J 183/04 - Polysiloxanes

Abstract

A self-adhesive multi-layer item comprising: A self-adhesive multi-layer item comprising: 1) a dorsal support DO having a top face SI1 and a bottom face SI2, 2) at least one layer of silicone release coating RC applied to the top face SI1 of the dorsal support DO and which is prepared by irradiation of a curable silicone composition C not containing any solvent and comprising, as constituents: a) at least one functionalized organopolysiloxane A b) an effective amount of at least one type I photoinitiator P of the family of acylphosphine oxide derivatives of formula (III) 3) at least one adhesive PSA, preferably at least one pressure-sensitive adhesive PSA, applied on the layer of silicone release coating, 4) a frontal support FR applied on the adhesive PSA of the component 3), and 5) optionally at least one layer of silicone release coating RC applied on the bottom face SI2 of the dorsal support DO and which is prepared by application and irradiation of said curable silicone composition C, and on this same layer, there is at least one adhesive PSA, preferably at least one pressure-sensitive adhesive PSA.

IPC Classes  ?

• C09J 7/40 - Adhesives in the form of films or foils characterised by release liners
• C09D 183/06 - Polysiloxanes containing silicon bound to oxygen-containing groups
• C09J 7/22 - PlasticsMetallised plastics
• C09J 7/21 - PaperTextile fabrics
• B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
• B32B 29/00 - Layered products essentially comprising paper or cardboard
• C08G 77/18 - Polysiloxanes containing silicon bound to oxygen-containing groups to alkoxy or aryloxy groups

Abstract

332nn, wherein each R is a hydrogen atom or a hydrocarbon group having 1 to 30 carbon atoms, optionally substituted by one or more halogen atoms, each L is an ether ligand, and n = 1, 2 or 3. The present invention also relates to a method for preparing said iron complex, as well as to the use thereof as a catalyst for the hydrosilylation of an alkene or alkyne.

IPC Classes  ?

• B01J 31/16 - Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
• B01J 31/22 - Organic complexes
• C08G 77/12 - Polysiloxanes containing silicon bound to hydrogen
• C08G 77/20 - Polysiloxanes containing silicon bound to unsaturated aliphatic groups
• C08L 83/04 - Polysiloxanes

Abstract

The present invention relates to a process for hydrosilylating an unsaturated compound with a compound comprising at least one hydrogenosilyl function catalysed by organic cobalt compounds in the presence of a compound (E) having the formula (3): R'-OH (3), wherein R' represents the hydrogen atom or R' is chosen from the group consisting of alkyl groups having 1 to 8 carbon atoms, cycloalkyl groups having 6 to 12 carbon atoms, aryl groups having 6 to 12 carbon atoms, aryl-alkyl groups, and silyl groups.

IPC Classes  ?

• C08G 77/12 - Polysiloxanes containing silicon bound to hydrogen
• C08G 77/20 - Polysiloxanes containing silicon bound to unsaturated aliphatic groups
• C08L 83/04 - Polysiloxanes
• C07F 9/58 - Pyridine rings
• C07F 15/06 - Cobalt compounds

Abstract

The invention relates to a method for the additive manufacturing of a silicone elastomer article using a 3D printer. The invention also relates to a crosslinkable silicone composition for the additive manufacturing of a silicone elastomer article.

IPC Classes  ?

• C09D 11/38 - Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes
• B29C 64/106 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• C09D 11/037 - Printing inks characterised by features other than the chemical nature of the binder characterised by the pigment
• C09D 11/102 - Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
• B29K 83/00 - Use of polymers having silicon, with or without sulfur, nitrogen, oxygen or carbon only, in the main chain, as moulding material

Abstract

A method is described for vulcanizing a green tire using an organopolysiloxane-based mold release agent lubricant composition. Also described, is an organopolysiloxane-based mold release agent lubricant composition.

IPC Classes  ?

• B29D 30/06 - Pneumatic tyres or parts thereof
• B29C 33/58 - Applying the releasing agents
• B29C 33/64 - Silicone

Abstract

The present invention relates to a method for producing a three-dimensional (3D) printed article with a photocurable silicone composition involving a silicone containing as end-group specific (meth)acrylate groups.

IPC Classes  ?

• C08F 2/46 - Polymerisation initiated by wave energy or particle radiation
• B29C 64/129 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask
• B29C 64/264 - Arrangements for irradiation
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• C01B 33/14 - Colloidal silica, e.g. dispersions, gels, sols
• C08F 2/50 - Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
• C08G 61/04 - Macromolecular compounds containing only carbon atoms in the main chain of the macromolecule, e.g. polyxylylenes only aliphatic carbon atoms
• C08L 83/06 - Polysiloxanes containing silicon bound to oxygen-containing groups
• B29K 33/00 - Use of polymers of unsaturated acids or derivatives thereof, as moulding material
• B29K 105/00 - Condition, form or state of moulded material
• B29K 105/16 - Fillers
• B29K 509/02 - Ceramics

Abstract

The present invention relates to a method for producing a three-dimensional (3D) printed article with a photocurable silicone composition involving a silicone containing as end-group specific (meth)acrylate groups.

IPC Classes  ?

• C08G 77/20 - Polysiloxanes containing silicon bound to unsaturated aliphatic groups
• B29C 64/135 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask the energy source being concentrated, e.g. scanning lasers or focused light sources
• C08K 3/36 - Silica

Abstract

The present invention relates to a method for producing a three-dimensional (3D) printed article with a photocurable silicone composition involving a silicone containing as end-group specific (meth)acrylate groups.

IPC Classes  ?

• B29C 64/124 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
• C08L 83/06 - Polysiloxanes containing silicon bound to oxygen-containing groups

Abstract

The present invention relates to a method for producing a three-dimensional (3D) printed article with a photocurable silicone composition involving a silicone containing as end-group specific (meth)acrylate groups.

IPC Classes  ?

• B29C 64/124 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 40/20 - Post-treatment, e.g. curing, coating or polishing
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• C08L 51/08 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds

Abstract

The present invention relates to a method for producing a three-dimensional (3D) printed article with a photocurable silicone composition involving a silicone containing as end-group specific (meth)acrylate groups.

IPC Classes  ?

• B29C 64/124 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
• C08L 83/06 - Polysiloxanes containing silicon bound to oxygen-containing groups

Abstract

The present invention relates to a method for producing a three-dimensional (3D) printed article with a photocurable silicone composition involving a silicone containing as end-group specific (meth)acrylate groups.

IPC Classes  ?

• B29C 64/124 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
• C08L 83/06 - Polysiloxanes containing silicon bound to oxygen-containing groups

Abstract

The present invention relates to a process for hydrosilylating an unsaturated compound with a compound comprising at least one hydrogenosilyl function, catalyzed by organic gallium compounds. The invention also relates to said organic gallium compounds, to the uses of same, to the manufacturing process thereof, and to compositions containing said compounds.

IPC Classes  ?

• C07F 5/00 - Compounds containing elements of Groups 3 or 13 of the Periodic Table
• C07F 7/08 - Compounds having one or more C—Si linkages
• C07F 9/50 - Organo-phosphines
• C07F 9/572 - Five-membered rings
• C07F 9/6503 - Five-membered rings

Abstract

The present invention relates to a type I photoinitiator for the free-radical crosslinking of radiation-crosslinkable compositions. In particular, the invention relates to a silicone composition comprising a type I photoinitiator and an organopolysiloxane having at least one (meth)acrylate group.

IPC Classes  ?

• C07C 49/84 - Ketones containing a keto group bound to a six-membered aromatic ring containing ether groups, groups, groups, or groups
• C07C 69/24 - Esters of acyclic saturated monocarboxylic acids having the carboxyl group bound to an acyclic carbon atom or to hydrogen having three or more carbon atoms in the acid moiety esterified with monohydroxylic compounds
• C08F 130/08 - Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal containing silicon
• C08G 77/20 - Polysiloxanes containing silicon bound to unsaturated aliphatic groups
• C08J 3/28 - Treatment by wave energy or particle radiation
• C08K 5/07 - AldehydesKetones
• C08K 5/10 - EstersEther-esters
• C09D 4/00 - Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond

Abstract

The present invention relates to a type I photoinitiator for the free-radical crosslinking of radiation-crosslinkable compositions. In particular, the invention relates to a silicone composition comprising a type I photoinitiator and an organopolysiloxane having at least one (meth)acrylate group.

IPC Classes  ?

• C08F 130/08 - Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal containing silicon
• C08K 5/10 - EstersEther-esters
• C09D 4/00 - Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond
• C07C 69/24 - Esters of acyclic saturated monocarboxylic acids having the carboxyl group bound to an acyclic carbon atom or to hydrogen having three or more carbon atoms in the acid moiety esterified with monohydroxylic compounds
• C07C 49/84 - Ketones containing a keto group bound to a six-membered aromatic ring containing ether groups, groups, groups, or groups
• C08J 3/28 - Treatment by wave energy or particle radiation
• C08G 77/20 - Polysiloxanes containing silicon bound to unsaturated aliphatic groups
• C08K 5/07 - AldehydesKetones

Abstract

Organopolysiloxane compositions are described that are crosslinkable by polyaddition and that can produce a silicone elastomer foam (or “silicone foam”) having a low density, i.e. a density of less than 0.20 g/cm3, and having good mechanical properties and a good fire resistance.

IPC Classes  ?

• C08L 83/04 - Polysiloxanes
• C08J 9/12 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
• C08J 9/00 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof

Abstract

The invention relates to a method for the additive manufacturing of a cured elastomer article. In particular, the invention relates to a method for the additive manufacturing of a 3- dimensional cured material and a support using a 3D printer.

IPC Classes  ?

• C08L 83/04 - Polysiloxanes
• B29C 64/40 - Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof
• C08L 71/02 - Polyalkylene oxides

Abstract

The present invention relates to a photo-crosslinkable silicone composition comprising an adherence modulator which is an organopolysiloxane resin comprising Si-OH groups. In particular, the invention relates to a silicone composition comprising at least one organopolysiloxane A comprising at least one (meth)acrylate group, at least 25% by weight of an organopolysiloxane resin B comprising Si-OH groups, and at least one radical photoinitiator C. The compositions of the present invention may be used to form release coatings.

IPC Classes  ?

• C08F 2/50 - Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
• C08G 77/16 - Polysiloxanes containing silicon bound to oxygen-containing groups to hydroxy groups
• C08G 77/20 - Polysiloxanes containing silicon bound to unsaturated aliphatic groups
• C08G 77/42 - Block- or graft-polymers containing polysiloxane sequences
• C09D 183/06 - Polysiloxanes containing silicon bound to oxygen-containing groups
• C09D 183/10 - Block or graft copolymers containing polysiloxane sequences
• C09J 183/06 - Polysiloxanes containing silicon bound to oxygen-containing groups
• C09J 183/10 - Block or graft copolymers containing polysiloxane sequences

Abstract

The invention relates to an additive manufacturing process for producing a silicone elastomer item. In particular, the invention relates to an additive manufacturing method for producing a silicone elastomer item from a photocrosslinkable silicone composition. The invention also relates to a photocrosslinkable silicone composition.

IPC Classes  ?

• C08F 2/46 - Polymerisation initiated by wave energy or particle radiation
• B29C 64/124 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• C08F 2/48 - Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
• C08F 2/50 - Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
• C08G 77/04 - Polysiloxanes
• C08G 77/14 - Polysiloxanes containing silicon bound to oxygen-containing groups
• C08G 77/20 - Polysiloxanes containing silicon bound to unsaturated aliphatic groups
• C08K 3/36 - Silica
• C08K 5/00 - Use of organic ingredients
• C08L 83/04 - Polysiloxanes
• C09D 7/61 - Additives non-macromolecular inorganic
• C09D 183/06 - Polysiloxanes containing silicon bound to oxygen-containing groups
• B29K 83/00 - Use of polymers having silicon, with or without sulfur, nitrogen, oxygen or carbon only, in the main chain, as moulding material

Abstract

The present invention relates to a photo-crosslinkable silicone composition comprising an adherence modulator which is an organopolysiloxane resin comprising Si-OH groups. In particular, the invention relates to a silicone composition comprising at least one organopolysiloxane A comprising at least one (meth)acrylate group, at least 25% by weight of an organopolysiloxane resin B comprising Si-OH groups, and at least one radical photoinitiator C. The compositions of the present invention may be used to form release coatings.

IPC Classes  ?

• C08F 2/50 - Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
• C08G 77/16 - Polysiloxanes containing silicon bound to oxygen-containing groups to hydroxy groups
• C08G 77/20 - Polysiloxanes containing silicon bound to unsaturated aliphatic groups
• C08G 77/42 - Block- or graft-polymers containing polysiloxane sequences
• C09D 183/06 - Polysiloxanes containing silicon bound to oxygen-containing groups
• C09D 183/10 - Block or graft copolymers containing polysiloxane sequences
• C09J 183/06 - Polysiloxanes containing silicon bound to oxygen-containing groups
• C09J 183/10 - Block or graft copolymers containing polysiloxane sequences

Abstract

The present invention relates to an adhesive film comprising: - a plastic film (F); - on one of the faces of the plastic film (F), an adhesive layer (CA); - on the other face of the plastic film (F), a silicone-based, non-stick coating layer (CAA) comprising a biocide chosen from metal biocides and ceramic particles, the biocide concentration in the adhesive film being between 0.015 and 0.045 g/m2; the adhesive film not comprising a backing for protecting the adhesive layer (CA).

IPC Classes  ?

• C09J 7/20 - Adhesives in the form of films or foils characterised by their carriers
• A61L 2/232 - Solid substances, e.g. granules, powders, blocks, tablets layered or coated

Abstract

The invention relates to a process for preparing a polyurea or a polyurethane organopolysiloxane block copolymer having a silicone content of at least 90% in weight relative to the total weight of the organosiloxane block copolymer. The invention further relates to a polyurea or a polyurethane organopolysiloxane block copolymer obtained according to this process and its use in a method for manufacturing a 3D article by an additive technique.

IPC Classes  ?

• C08G 77/388 - Polysiloxanes modified by chemical after-treatment containing atoms other than carbon, hydrogen, oxygen or silicon containing nitrogen
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• C08G 77/54 - Nitrogen-containing linkages

Abstract

The invention relates to a method for the additive manufacturing of a silicone elastomer article. In particular, the invention relates to a method for the additive manufacturing of a silicone elastomer article and a support using a 3D printer.

IPC Classes  ?

• C09D 11/102 - Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• B29C 64/40 - Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof
• B29C 64/106 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
• C09D 11/037 - Printing inks characterised by features other than the chemical nature of the binder characterised by the pigment
• B29K 83/00 - Use of polymers having silicon, with or without sulfur, nitrogen, oxygen or carbon only, in the main chain, as moulding material
• B29K 509/02 - Ceramics

Abstract

The present invention relates to a process for manufacturing a silicone elastomer article comprising the following step: 1) providing a composition C, comprising water, at least one poloxamer and a poly(oxyalkylene glycol), into a container; 2) placing the container comprising the composition C at the required temperature T1 to form a gel; 3) printing a crosslinkable silicone composition X into the gel obtained in 2) with a 3D printer at the required temperature T1; 4) optionally allowing the printed composition X to partially or totally crosslink, optionally by heating, to obtain a silicone elastomer article, in the container; 5) optionally placing the container obtained in step 4) at a temperature T3 lower than the sol-gel transition temperature of composition C; 6) recovering the silicone elastomer article; and 7) optionally washing the obtained silicone elastomer article for example with water at a temperature T3 lower than the sol-gel transition temperature of composition C.

IPC Classes  ?

• A61K 47/34 - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyesters, polyamino acids, polysiloxanes, polyphosphazines, copolymers of polyalkylene glycol or poloxamers
• B29C 64/40 - Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof
• C08L 71/02 - Polyalkylene oxides
• C08L 83/04 - Polysiloxanes
• B33Y 70/00 - Materials specially adapted for additive manufacturing

Abstract

The present invention relates to a medical silicone pressure-sensitive adhesive composition comprising: organopolysiloxane A, organopolysiloxane resin B, organopolysiloxane crosslinker XL, organopolysiloxane extender CE, hydrosilylation catalyst D, solvent E and hydrosilylation inhibitor F, wherein the organopolysiloxanes A, CE and XL are chosen such that the molar ratio RHAlk = tH/tAlk is 3.5 to 8; and nH XL/nH CEis within 0.13 to 11, with: -tH = number of moles of hydrogen atom directly bonded to a silicon atom of the organopolysiloxanes XL and CE; -tAlk = number of moles of alkenyl directly bonded to a silicon atom of the organopolysiloxane A; -nH XL= number of moles of hydrogen atom directly bonded to a silicon atom of the organopolysiloxane XL; -nH CE = number of moles of hydrogen atom directly bonded to a silicon atom of the organopolysiloxane CE. The present invention also relates to a method for coating a substrate by using the medical silicone pressure-sensitive adhesive composition, a coated substrate obtainable according to the method, and also to a skin-adhesive article by using the medical silicone pressure-sensitive adhesive composition

IPC Classes  ?

• A61L 15/26 - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bondsDerivatives thereof
• A61L 15/58 - Adhesives

Abstract

The invention relates to the general field of coating various flexible supports, such as sheets of paper or synthetic polymer (polyolefin, polyester, etc) sheets or fabric sheets, with a silicone on high-speed rolls. The invention relates to an efficient method for preventing mist formation when coating flexible supports with a liquid silicone composition precursor of cross-linked coatings, said coating process being performed using a coating device that includes a roll operating at a high speed.

IPC Classes  ?

• C09D 7/40 - Additives
• B05D 1/28 - Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
• C09D 183/06 - Polysiloxanes containing silicon bound to oxygen-containing groups

Abstract

The present invention relates to a coating method wherein a silicone composition crosslinkable by polyaddition reactions is used to form a silicone elastomer on an open-work and/or elastic textile medium. The crosslinking of the silicone composition is obtained by irradiating with UV radiation, the source of which is a UV-LED lamp.

IPC Classes  ?

• D06M 10/10 - Macromolecular compounds
• A41B 11/12 - Means at the upper end to keep the stockings up
• A41F 9/00 - Belts, girdles, or waistbands for trousers or skirts
• C08G 77/00 - Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon
• C09D 183/04 - Polysiloxanes
• D06M 14/18 - Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics or fibrous goods made from such materials using wave energy or particle radiation
• D06M 15/643 - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain

Abstract

The present invention relates to a crosslinkable silicone elastomer composition containing a heat-resistant additive. In particular, the invention relates to a crosslinkable silicone elastomer composition containing a heat-resistant additive that is cerium (IV) neodecanoate.

IPC Classes  ?

• C08L 83/04 - Polysiloxanes
• H01B 3/46 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes silicones
• C08K 3/36 - Silica
• C08K 5/14 - Peroxides
• C08K 9/04 - Ingredients treated with organic substances
• C08K 5/00 - Use of organic ingredients

Abstract

The present invention relates to organopolysiloxane compositions comprising an organopolysiloxane having, per molecule, at least two alkenyl groups, an organopolysiloxane having, per molecule, at least two SiH units, a hydrosilylation catalyst, and a thermally conductive filler, the thermally conductive filler comprising at least 40% by weight of metallic silicon, and a specific particle size distribution. The invention further relates to a silicone elastomer which can be obtained by cross-linking and/or curing the composition, as well as its use as a thermally conductive material for coating or filling, in particular for the automotive field, in particular for the field of electric vehicles.

IPC Classes  ?

• C09C 3/10 - Treatment with macromolecular organic compounds
• C08L 83/00 - Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon onlyCompositions of derivatives of such polymers
• C08G 77/00 - Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon
• C09K 5/00 - Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerantsMaterials for the production of heat or cold by chemical reactions other than by combustion
• C09C 1/28 - Compounds of silicon
• C08G 77/12 - Polysiloxanes containing silicon bound to hydrogen
• C08G 77/20 - Polysiloxanes containing silicon bound to unsaturated aliphatic groups
• C08K 3/02 - Elements
• C08K 3/22 - OxidesHydroxides of metals
• C08L 83/04 - Polysiloxanes

Abstract

The present invention concerns type II photoinitiators for the free-radical crosslinking of silicone compositions, in particular acrylic silicone compositions. The present invention concerns a silicone composition C1 that can be crosslinked by exposure to radiation with a wavelength of between 300 and 450 nm, comprising: —at least one organopolysiloxane A comprising at least one methacrylate group bonded to a silicon atom, at least one organohydrogenopolysiloxane H comprising at least two, and preferably at least three hydrogen atoms each bonded to different silicon atoms, and—at least one free-radical photoinitiator P. The present invention also concerns the provision of a silicone composition that can be polymerized or crosslinked by free-radical process comprising a type II photoinitiator system suitable for crosslinking silicone compositions, in particular by exposure to radiation, and absorbing light radiation with a wavelength greater than 300 nm.

IPC Classes  ?

• C08L 83/06 - Polysiloxanes containing silicon bound to oxygen-containing groups
• C08G 77/14 - Polysiloxanes containing silicon bound to oxygen-containing groups
• B29C 64/295 - Heating elements
• B29C 64/277 - Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED]
• B29C 64/10 - Processes of additive manufacturing
• B29C 35/08 - Heating or curing, e.g. crosslinking or vulcanising by wave energy or particle radiation
• C08J 3/28 - Treatment by wave energy or particle radiation
• C08K 5/00 - Use of organic ingredients
• C08F 2/46 - Polymerisation initiated by wave energy or particle radiation
• C08L 83/04 - Polysiloxanes
• C08F 4/00 - Polymerisation catalysts

Abstract

A curable silicone composition is described. Also described, is a method of producing a three-dimensional (3D) printed article with a curable silicone composition involving epoxy-related photocuring and hydrosilylation curing. In exemplary embodiments, the resulting three-dimensional (3D) printed article thus formed and the curable silicone composition or the resulting three-dimensional (3D) printed article can be used in electronics applications and/or in 3D printing.

IPC Classes  ?

• C08L 83/04 - Polysiloxanes
• B33Y 70/10 - Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials

Abstract

Items that adhere to the skin for medical or paramedical use and methods of making and using the same are described.

IPC Classes  ?

• C09J 183/04 - Polysiloxanes
• A61L 15/58 - Adhesives
• A61L 15/22 - Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
• A61F 5/443 - Devices worn by the patient for reception of urine, faeces, catamenial or other dischargeColostomy devices having hydrocolloid type seals, e.g. gels, starches, karaya gums
• A61M 25/02 - Holding devices, e.g. on the body
• A61F 13/02 - Adhesive bandages or dressings
• C09J 183/06 - Polysiloxanes containing silicon bound to oxygen-containing groups

Abstract

A method for producing a porous silicone material including the following steps: 1) implementing a direct emulsion E of silicone in water including: A) a silicone base A crosslinkable by polyaddition or polycondensation; B) at least one nonionic silicone surfactant B having a cloud point between 10 and 50° C.; C) optionally, at least one catalyst C; and D) water; 2) heating the emulsion E to a temperature greater than or equal to 60° C. to obtain a porous silicone material; and 3) optionally, drying the porous silicone material.

IPC Classes  ?

• C08J 9/00 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof
• C08L 83/04 - Polysiloxanes
• C08J 9/28 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum

Abstract

The invention relates to a method for vulcanizing a green tire using an organopolysiloxane-based mold release agent lubricant composition. The invention also relates to an organopolysiloxane-based mold release agent lubricant composition.

IPC Classes  ?

• B29C 33/64 - Silicone
• B29D 30/06 - Pneumatic tyres or parts thereof

Abstract

The invention relates to a method for the additive manufacturing of a silicone elastomer article using a 3D printer. The invention also relates to a crosslinkable silicone composition for the additive manufacturing of a silicone elastomer article.

IPC Classes  ?

• B33Y 10/00 - Processes of additive manufacturing
• C08L 83/04 - Polysiloxanes

Abstract

at least one co-initiator B chosen from compounds having at least one hydrogen atom bonded to a silicon atom.

IPC Classes  ?

• C08L 83/04 - Polysiloxanes
• C09D 183/04 - Polysiloxanes
• C08K 5/07 - AldehydesKetones
• C08K 5/45 - Heterocyclic compounds having sulfur in the ring
• C08G 77/20 - Polysiloxanes containing silicon bound to unsaturated aliphatic groups
• C08G 77/12 - Polysiloxanes containing silicon bound to hydrogen

Abstract

The field of the invention is that of the preparation of release and water-repellent coatings on a support, preferably a flexible support, such as a support made of paper or of synthetic polymer film, preferably of the polyolefin, polypropylene, polyethylene or polyester type. The release coatings taken into consideration are more especially those based on silicone elastomer crosslinked after coating on these supports.

IPC Classes  ?

• C09D 5/22 - Luminous paints
• C08G 77/12 - Polysiloxanes containing silicon bound to hydrogen
• C08F 2/24 - Emulsion polymerisation with the aid of emulsifying agents
• C09D 5/02 - Emulsion paints
• C08G 77/20 - Polysiloxanes containing silicon bound to unsaturated aliphatic groups
• C09D 183/06 - Polysiloxanes containing silicon bound to oxygen-containing groups

Abstract

Silicone material obtained by a reaction between:—at least one organopolysiloxane (A) that has a molar mass of less than 70,000 g/mol, preferably less than 50,000 g/mol, and contains siloxyl units I.1 and I.2; and—at least one organic compound (B) carrying at least two carboxylic acid groups and having no unsaturation. )

IPC Classes  ?

• C09D 183/08 - Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
• B05D 1/00 - Processes for applying liquids or other fluent materials
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• C08K 3/36 - Silica
• C08L 83/08 - Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen

Abstract

The present invention relates to novel organopolysiloxane compositions which are crosslinkable by polyaddition and which are intended to produce a silicone elastomer foam (or "silicone foam") having low density, i.e. a density of less than 0.20 g/cm3, and having good mechanical properties and a good fire resistance.

IPC Classes  ?

• C08L 83/04 - Polysiloxanes
• C08J 9/00 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof
• C08J 9/02 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by the reacting monomers or modifying agents during the preparation or modification of macromolecules

Abstract

The present invention relates to compositions in the form of silicone oil emulsions intended to be applied to curing bladders as a mould-release agent during tyre production.

IPC Classes  ?

• C10M 169/04 - Mixtures of base-materials and additives
• B29C 33/64 - Silicone
• B29C 37/00 - Component parts, details, accessories or auxiliary operations, not covered by group or
• B29D 30/06 - Pneumatic tyres or parts thereof
• C10M 107/50 - Lubricating compositions characterised by the base-material being a macromolecular compound containing silicon
• C10M 173/02 - Lubricating compositions containing more than 10% water not containing mineral or fatty oils
• C10N 20/02 - ViscosityViscosity index
• C10N 40/36 - Release agents

Abstract

An additive manufacturing method for producing a silicone elastomer article is provided. In particular, the invention relates to an additive manufacturing method for producing a silicone elastomer article from a photo-crosslinkable silicone composition. The invention also relates to a photo-crosslinkable silicone composition.

IPC Classes  ?

• B29C 64/124 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• B33Y 80/00 - Products made by additive manufacturing
• C08K 3/24 - AcidsSalts thereof
• C08L 83/06 - Polysiloxanes containing silicon bound to oxygen-containing groups
• C08L 83/10 - Block- or graft-copolymers containing polysiloxane sequences

Abstract

An additive manufacturing method for producing a silicone elastomer article is provided. In particular, the invention relates to an additive manufacturing method for producing a silicone elastomer article from a photo-crosslinkable silicone composition. The invention also relates to a photo-crosslinkable silicone composition.

IPC Classes  ?

• B29C 64/124 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• C08L 83/06 - Polysiloxanes containing silicon bound to oxygen-containing groups

Abstract

Nanoparticles that can be used as hydrosilylation and dehydrogenative silylation catalysts. The nanoparticles have at least one transition metal with an oxidation state of 0, chosen from the metals of columns 8, 9 and 10 of the periodic table, and at least one carbonyl ligand, preferably a silicide.

IPC Classes  ?

• B01J 35/00 - Catalysts, in general, characterised by their form or physical properties
• B01J 31/20 - Carbonyls
• B01J 31/16 - Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
• B01J 35/02 - Solids
• B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
• B82Y 40/00 - Manufacture or treatment of nanostructures

Abstract

Silicone gels are described that are adhesive to the skin. The gels are able to be used in particular for articles that are adhesive to the skin for medical or paramedical use.

IPC Classes  ?

• A61F 13/02 - Adhesive bandages or dressings
• A61L 15/26 - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bondsDerivatives thereof
• A61L 15/58 - Adhesives
• A61L 26/00 - Chemical aspects of, or use of materials for, liquid bandages
• A61L 27/18 - Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• C08G 77/20 - Polysiloxanes containing silicon bound to unsaturated aliphatic groups
• C08L 75/04 - Polyurethanes
• C08L 83/04 - Polysiloxanes
• C09J 183/04 - Polysiloxanes
• C08K 5/56 - Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond

Abstract

The present invention relates to a non-implantable medical device (1, 1′) intended to cover wounds and skin lesions, comprising a biosensor (3E, 3E′), characterised in that said biosensor (3E, 3E′) comprises a piece made of absorbent, hydrophilic material fixing, on the surface and/or within the thickness thereof, a composition of agglomerated powders comprising particles of ethylene vinyl acetate (EVA) having a surface in part covered with at least one orthophosphoric acid salt and a visual indicator of microbiological growth. The present invention relates to a non-implantable medical device (1, 1′) intended to cover wounds and skin lesions, comprising a biosensor (3E, 3E′), characterised in that said biosensor (3E, 3E′) comprises a piece made of absorbent, hydrophilic material fixing, on the surface and/or within the thickness thereof, a composition of agglomerated powders comprising particles of ethylene vinyl acetate (EVA) having a surface in part covered with at least one orthophosphoric acid salt and a visual indicator of microbiological growth. In particular, the medical device (1, 1′) may comprise several layers in order to enable the guiding of a liquid. The present invention relates to a non-implantable medical device (1, 1′) intended to cover wounds and skin lesions, comprising a biosensor (3E, 3E′), characterised in that said biosensor (3E, 3E′) comprises a piece made of absorbent, hydrophilic material fixing, on the surface and/or within the thickness thereof, a composition of agglomerated powders comprising particles of ethylene vinyl acetate (EVA) having a surface in part covered with at least one orthophosphoric acid salt and a visual indicator of microbiological growth. In particular, the medical device (1, 1′) may comprise several layers in order to enable the guiding of a liquid. The present invention relates to a method for preparing such a medical device (1, 1′).

IPC Classes  ?

• A61B 5/00 - Measuring for diagnostic purposes Identification of persons
• A61F 13/00 - Bandages or dressingsAbsorbent pads
• A61L 15/24 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bondsDerivatives thereof
• A61L 15/18 - Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing inorganic materials
• A61F 13/02 - Adhesive bandages or dressings
• A61K 49/00 - Preparations for testing in vivo
• C12Q 1/14 - StreptococcusStaphylococcus

Abstract

A skin-adhesive item is described that can include a substrate F coated continuously or discontinuously on at least one of the two faces thereof by a pressure-sensitive silicone adhesive Z that has been previously sterilized by means of gamma radiation and demonstrates good tack on the skin even after sterilization.

IPC Classes  ?

• A61L 15/58 - Adhesives
• C09J 7/38 - Pressure-sensitive adhesives [PSA]
• C08G 77/12 - Polysiloxanes containing silicon bound to hydrogen
• C08G 77/16 - Polysiloxanes containing silicon bound to oxygen-containing groups to hydroxy groups
• C09J 183/04 - Polysiloxanes
• C08G 77/00 - Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon

Abstract

The invention relates to the general field of coating various flexible supports, such as sheets of paper or synthetic polymer (polyolefin, polyester, etc) sheets or fabric sheets, with a silicone on high-speed rolls. The invention relates to an efficient method for preventing mist formation when coating flexible supports with a liquid silicone composition precursor of cross-linked coatings, said coating process being performed using a coating device that includes a roll operating at a high speed.

IPC Classes  ?

• C08L 83/06 - Polysiloxanes containing silicon bound to oxygen-containing groups
• C09D 183/06 - Polysiloxanes containing silicon bound to oxygen-containing groups

Abstract

The invention relates to the general field of coating various flexible supports, such as sheets of paper or synthetic polymer (polyolefin, polyester, etc) sheets or fabric sheets, with a silicone on high-speed rolls. The invention relates to an efficient method for preventing mist formation when coating flexible supports with a liquid silicone composition precursor of cross-linked coatings, said coating process being performed using a coating device that includes a roll operating at a high speed.

IPC Classes  ?

• C09D 183/06 - Polysiloxanes containing silicon bound to oxygen-containing groups
• C08L 83/06 - Polysiloxanes containing silicon bound to oxygen-containing groups

Abstract

The invention relates to a method for the additive manufacturing of a silicone elastomer article. In particular, the invention relates to a method for the additive manufacturing of a silicone elastomer article and a support using a 3D printer.

IPC Classes  ?

• B33Y 70/00 - Materials specially adapted for additive manufacturing
• C08L 83/04 - Polysiloxanes
• B29C 64/106 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
• B29C 64/40 - Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof

Abstract

Silicone compositions are described for the production of negative molds that include a silicone elastomer. The molds can be used in the production of molded articles.

IPC Classes  ?

• B29C 33/40 - Plastics, e.g. foam or rubber
• B29C 33/38 - Moulds or coresDetails thereof or accessories therefor characterised by the material or the manufacturing process
• C08G 77/08 - Preparatory processes characterised by the catalysts used
• B29K 83/00 - Use of polymers having silicon, with or without sulfur, nitrogen, oxygen or carbon only, in the main chain, as moulding material

Abstract

An object of the present invention is the use of iron compounds as hydrosilylation and dehydrogenative silylation catalysts.

IPC Classes  ?

• C08G 77/08 - Preparatory processes characterised by the catalysts used
• B01J 31/02 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
• C08G 77/12 - Polysiloxanes containing silicon bound to hydrogen
• C08G 77/20 - Polysiloxanes containing silicon bound to unsaturated aliphatic groups
• C08L 83/04 - Polysiloxanes

Abstract

The invention relates to an additive manufacturing method for producing a three-dimensional elastomer silicone article. The elastomer silicone article is built up layer by layer by printing a silicone composition crosslinkable by addition reactions comprising at least one organopolysiloxane-polyoxyalkylene copolymer with a 3D printer selected from an extrusion 3D printer or a material jetting 3D printer.

IPC Classes  ?

• B29C 64/118 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
• C08K 3/36 - Silica
• C08L 83/04 - Polysiloxanes
• B33Y 70/10 - Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
• B33Y 10/00 - Processes of additive manufacturing
• B29K 71/00 - Use of polyethers as moulding material
• B29K 83/00 - Use of polymers having silicon, with or without sulfur, nitrogen, oxygen or carbon only, in the main chain, as moulding material
• B29K 105/00 - Condition, form or state of moulded material
• B29K 105/24 - Condition, form or state of moulded material cross-linked or vulcanised
• B29C 64/245 - Platforms or substrates
• B29C 64/295 - Heating elements
• B29C 64/209 - HeadsNozzles
• B33Y 80/00 - Products made by additive manufacturing

Abstract

A process is provided for preparing composite articles composed of a rigid glass, metal or thermoplastic resin substrate and of a silicone elastomer with good mechanical properties and good adhesion between the substrate and the silicone elastomer E such that there is a solid bond between the two parts. The composite articles are used in very diverse fields such as electrical and electronic equipment, motor vehicle and medical equipment, and they may be found, for example, in household appliances, consumer goods, medical equipment and sports and leisure articles.

IPC Classes  ?

• C09D 183/04 - Polysiloxanes
• C08K 3/013 - Fillers, pigments or reinforcing additives
• C08K 3/08 - Metals
• C08K 5/56 - Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond

Abstract

The field of the invention is that of a curable silicone composition. More specifically, the present invention relates to a method for producing a three-dimensional (3D) printed article with a curable silicone composition involving epoxy-related photocuring and hydrosilylation curing, to the three-dimensional (3D) printed article thus formed and the use of the curable silicone composition or the three-dimensional (3D) printed article in electronics application or in 3D printing.

IPC Classes  ?

• B29C 67/00 - Shaping techniques not covered by groups , or
• B33Y 80/00 - Products made by additive manufacturing
• B29K 83/00 - Use of polymers having silicon, with or without sulfur, nitrogen, oxygen or carbon only, in the main chain, as moulding material
• C08L 83/04 - Polysiloxanes
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• B33Y 10/00 - Processes of additive manufacturing

Abstract

The invention relates to a method for producing a porous silicone material. Specifically, the invention relates to a method for producing a porous silicone material comprising the following steps: 1) producing a direct emulsion E of silicone in water, comprising: A) a silicone base A cross-linkable by polyaddition or polycondensation; B) at least one nonionic silicone surface-active agent B having a cloud point of between 10 and 50°C, preferably between 15 and 45°C; C) possibly at least one catalyst C; and D) water; 2) heating the emulsion E to a temperature greater than or equal to 60°C in order to obtain a porous silicone material; and 3) possibly drying the porous silicone material, preferably by heating.

Abstract

The present invention relates to a process for manufacturing a silicone elastomer article comprising the following step: 1) providing a composition C, comprising water and at least 20% by weight of at least one poloxamer, into a container; 2) placing the container comprising the composition C at the required temperature T1 to form a gel; 3) printing a crosslinkable silicone composition X into the gel obtained in 2) with a 3D printer at the required temperature T1; 4) optionally allowing the printed composition X to partially or totally crosslink, optionally by heating, to obtain a silicone elastomer article, into the container; 5) optionally placing the container obtained in step 4) at a temperature T3 lower than the sol-gel transition temperature of composition C; 6) recovering the silicone elastomer article; and 7) optionally washing the obtained silicone elastomer article for example with water at a temperature T3 lower than the sol-gel transition temperature of composition C.

IPC Classes  ?

• B29C 64/106 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
• B29C 64/40 - Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• B33Y 10/00 - Processes of additive manufacturing
• B29C 64/364 - Conditioning of environment
• C08J 5/00 - Manufacture of articles or shaped materials containing macromolecular substances

Abstract

y in which: —the R symbols, which are identical or different, represent a hydrogen atom or a hydrocarbon-based radical having from 1 to 12 carbon atoms, and preferably the R symbols, which are identical or different, are chosen from the group consisting of: a hydrogen atom, alkyl groups having from 1 to 8 carbon atoms and aryl groups having from 6 to 12 carbon atoms, —x=1, 2 or 3 and—y=1 or 2.

IPC Classes  ?

• C08L 83/04 - Polysiloxanes
• B01J 31/16 - Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
• B01J 31/18 - Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes containing nitrogen, phosphorus, arsenic or antimony

Abstract

Silicone material obtained by a reaction between: - at least one organopolysiloxane (A) that has a molar mass of less than 70,000 g/mol, preferably less than 50,000 g/mol, and contains siloxyl units I.1 and I.2; and - at least one organic compound (B) carrying at least two carboxylic acid groups and having no unsaturation.

IPC Classes  ?

• C09D 183/08 - Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
• B33Y 70/00 - Materials specially adapted for additive manufacturing

Abstract

Approaches are described for coating various flexible media, such as sheets of paper, synthetic polymer (polyolefin, polyester, etc.) sheets or fabric sheets, with a silicone on high-speed rolls. For example, an efficient method is described for minimizing and/or reducing mist formation when coating flexible supports with a liquid silicone composition precursor of crosslinked coatings. The coating process can be performed using a coating device that includes a roll operating at a high speed.

IPC Classes  ?

• C09D 183/08 - Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
• C09D 7/65 - Additives macromolecular
• C09D 5/00 - Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects producedFilling pastes
• B62B 3/02 - Hand carts having more than one axis carrying transport wheelsSteering devices thereforEquipment therefor involving parts being adjustable, collapsible, attachable, detachable, or convertible
• C09D 183/06 - Polysiloxanes containing silicon bound to oxygen-containing groups
• C08G 77/20 - Polysiloxanes containing silicon bound to unsaturated aliphatic groups
• C08G 77/388 - Polysiloxanes modified by chemical after-treatment containing atoms other than carbon, hydrogen, oxygen or silicon containing nitrogen
• B62B 5/00 - Accessories or details specially adapted for hand carts
• C08G 77/26 - Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen nitrogen-containing groups
• B05D 1/28 - Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
• C08G 77/00 - Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon

Abstract

The present invention concerns nanoparticles that can be used as catalysts, in particular as hydrosilylation and dehydrogenative silylation catalysts. More specifically, the present invention concerns nanoparticles of at least one transition metal with an oxidation state of 0, chosen from the metals of columns 8, 9 and 10 of the periodic table, and comprising at least one carbonyl ligand, and preferably comprising a silicide.

IPC Classes  ?

• B01J 23/75 - Cobalt
• B01J 23/745 - Iron
• B01J 23/74 - Iron group metals
• B01J 23/40 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of noble metals of the platinum group metals
• B01J 23/755 - Nickel
• B01J 35/00 - Catalysts, in general, characterised by their form or physical properties
• B01J 35/02 - Solids
• B01J 31/02 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
• B01J 31/12 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing organo-metallic compounds or metal hydrides
• B01J 31/16 - Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
• B01J 31/20 - Carbonyls
• B01J 31/22 - Organic complexes
• C07F 7/08 - Compounds having one or more C—Si linkages
• C07F 7/18 - Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
• C01B 33/06 - Metal silicides

Abstract

The invention relates to a method for hydrosilylating an unsaturated compound comprising at least one ketone function, one aldehyde function, one alkene function and/or one alkyne function, with a compound comprising at least one hydrogenosilyl function, using an organic germanium catalyst.

IPC Classes  ?

• C07F 7/18 - Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
• C07F 7/30 - Germanium compounds
• C07F 9/6584 - Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms having phosphorus and nitrogen atoms with or without oxygen or sulfur atoms, as ring hetero atoms having one phosphorus atom as ring hetero atom
• C07F 9/535 - Organo-phosphoranes
• B01J 31/22 - Organic complexes