The present invention provides a uniquely designed crosslinking system for fluoroelastomers, which a bisphenol free, safe crosslinking system for fluoroelastomers comprising the components: a) a phase transfer catalyst selected from quaternary ammonium or phosphonium salt; b) a non-bisphenol curative agent; c) a dispersing agent; d) a processing aid; and e) at least one additive. Said uniquely designed crosslinking system shall be useful in making commercially available fluoroelastomers/fluoropolymers exhibiting high thermal, chemical, ageing and weather resistance, excellent inertness to solvents, hydrocarbons, acids and alkalis, low dielectric constants, low flammability, low refractive index, low surface energy and low moisture absorption.
C08L 27/12 - Compositions contenant des homopolymères ou des copolymères de composés possédant un ou plusieurs radicaux aliphatiques non saturés, chacun ne contenant qu'une seule liaison double carbone-carbone et l'un au moins étant terminé par un halogèneCompositions contenant des dérivés de tels polymères non modifiées par un post-traitement chimique contenant du fluor
C08J 3/24 - Réticulation, p. ex. vulcanisation, de macromolécules
C08F 2/08 - Solvant organique utilisant des agents de dispersion pour le polymère
2.
A PROCESS FOR REDUCING THE FLUOROALKYL SUBSTANCES FROM A FLUOROPOLYMER LATEX
The present disclosure relates to a process for reducing the fluoroalkyl substances (PFAS) from a fluoropolymer latex. The process of the present disclosure is capable to remove both the targeted and non-targeted PFAS. The present disclosure provides effective and efficient process for reducing the fluoroalkyl substances (PFAS) from fluoropolymer latex.
B01D 15/38 - Adsorption sélective, p. ex. chromatographie caractérisée par le mécanisme de séparation impliquant une interaction spécifique non couverte par un ou plusieurs des groupes , p. ex. chromatographie d'affinité, chromatographie d'échange par ligand ou chromatographie chirale
3.
A PROCESS FOR PREPARING HIGH-PURITY ALKALI METAL HEXAFLUOROPHOSPHATE AND THE ALKALI METAL HEXAFLUOROPHOSPHATE PREPARED THEREFROM
The present disclosure relates to process of preparing an ultra-high purity alkali metal hexafluorophosphate (MPF6), comprising following steps: (a) charging alkali metal fluoride (MF) in a first reactor 'B' and flushing nitrogen gas through the same, (b) cooling the first reactor 'B' to a predetermined temperature, followed by charging anhydrous hydrogen fluoride (AHF) gas and stirring the mixture comprising alkali metal fluoride (MF) dissolved in AHF in the first reactor 'B', (c) cooling the mixture comprising alkali metal fluoride (MF) dissolved in AHF in the first reactor 'B' to a predetermined temperature, (d) charging phosphorous pentachloride (PCl5) in a second reactor 'A' and adding AHF in lots, to produce high purity phosphorous pentafluoride (PF5) and hydrogen chloride (HCl) gas, (e) reacting alkali metal fluoride (MF) dissolved in AHF in the first reactor 'B' with phosphorus pentafluoride (PF5) and hydrogen chloride (HCl) gas mixture obtained in step (d) to obtain alkali metal hexafluorophosphate mother liquor dissolved in AHF under PF5 gas blanketing, (f) cooling the first reactor 'B' to a predetermined temperature and maintaining the temperature of alkali metal hexafluorophosphate mother liquor dissolved in AHF for predetermined time, followed by filtration and drying at predetermined temperature to achieve alkali metal hexafluorophosphate (MPF6) selected from NaPF6 or KPF6 or CsPF6.
The present disclosure relates to a process for the preparation of fluoropolymers. Particularly, the present disclosure relates to a process for the preparation of fluoropolymers by using an alkali metal salt C8-C15 alkyl benzene sulfonic acid as a non-fluorinated hydrocarbon containing surfactant. The process for the preparation of fluoropolymers in accordance with the present disclosure is simple, efficient and environment friendly; is feasible on a large/commercial scale and avoids using fluorinated surfactants.
The present invention discloses a process for polymerizing a fluoromonomer or a mixture of fluoromonomers and/or non-fluorinated monomers in an aqueous dispersion medium containing a non-fluorinated imino acid type hydrocarbon surfactant to form a fluoropolymer. The process comprises the steps of: (a) pressurizing a polymerization reactor containing an aqueous medium with a fluoromonomer or a mixture of fluoromonomers and/or non- fluorinated monomers; (b) initiating a polymerization reaction of the fluoromonomer or the mixture of fluoromonomers and/or non-fluorinated monomers to form a fluoropolymer by adding an initiator; (c) propagating said polymerization reaction; and (d) terminating the polymerization reaction after consumption of a desired quantity of the fluoromonomer or the mixture of fluoromonomers and/or non- fluorinated monomers, wherein the hydrocarbon surfactant is represented by Formula I.
The present disclosure relates to a process for the preparation of 1-chloro-1,1-difluoroethane. The process comprises reacting vinylidene chloride by using an anhydrous hydrogen fluoride in the presence of a catalyst to obtain 1-chloro-1,1-difluoroethane. The process of the present disclosure produces 1-chloro-1,1-difluoroethane (HCFC 142b) with >90% selectively over 1- fluoro-1,1-dichloroethane (141b) and trifluoroethane (143a). Further, the process of the present disclosure avoids using 1,1,1-trichloroethane which has high ozone depletion potential.
C07C 17/21 - Préparation d'hydrocarbures halogénés par remplacement par des halogènes d'atomes d'halogène par d'autres atomes d'halogène avec augmentation simultanée du nombre d'atomes d'halogène
C07C 17/087 - Préparation d'hydrocarbures halogénés par addition d'halogénures d'hydrogène à des hydrocarbures halogénés non saturés
7.
PROCESS FOR PREPARING STYRENE-ACRYLONITRILE ENCAPSULATED POLYTETRAFLUOROETHYLENE
A process for preparation of styrene-acrylonitrile encapsulated polytetrafluoroethylene comprising providing an initial feed comprising reagent, monomers and redox initiator system; and a subsequent feed comprising a remaining quantity of the monomers and redox initiator system.
A process for polymerizing vinylidene fluoride in an aqueous medium to form a fluoropolymer is disclosed. The process comprises: pressurizing a polymerization reactor containing an aqueous medium with either a primary monomer or a primary monomer and a co-monomer, wherein the primary monomer is vinylidene fluoride; initiating a polymerization reaction of said primary monomer or the primary monomer and the co-monomer to form fluoropolymer by adding an initiator; propagating the polymerization reaction, wherein a surfactant comprising a combination of a fluorinated and a non-fluorinated surfactant is added into the reactor at a delayed stage after initiation of the polymerization reaction; and terminating the polymerization reaction after consumption of a desired quantity of said primary monomer and/or the co-monomer. Alternatively, during propagation, a non-fluorinated surfactant comprising one or more salts of alkyl sulfate or one or more salts of Lauryl-imino-di-acetic acid surfactant may be added into the reactor.
C08L 27/00 - Compositions contenant des homopolymères ou des copolymères de composés possédant un ou plusieurs radicaux aliphatiques non saturés, chacun ne contenant qu'une seule liaison double carbone-carbone et l'un au moins étant terminé par un halogèneCompositions contenant des dérivés de tels polymères
The present disclosure relates to a process for preparing high purity Lithium Hexafluorophosphate (LiPF6), comprising the steps of: (a) reacting high purified anhydrous hydrogen fluoride (AHF) gas with solid phosphorous pentachloride to produce a mixture of pure phosphorous pentafluoride and hydrogen chloride gas, (b) reacting highly purified lithium fluoride dissolved in AHF solution with phosphorous pentafluoride and hydrogen chloride gas mixture obtained in step (a) to obtain LiPF6 mother liquor, which is LiPF6 dissolved in AHF; crystallizing the LiPF6 from the mother liquor in static crystallizer, separating the mother liquor, drying the product to remove HF; followed by drying and crushing of the crystals of LiPF6 to obtain LiPF6 powder.
The present invention discloses a process for polymerizing fluoromonomers in an aqueous medium to form a fluoropolymer, said process comprising the steps of: (a) forming an aqueous solution comprising a first surfactant combination of at least one fluorinated surfactant and at least one non-10 fluorinated surfactant in a polymerization reactor; (b) pressurizing the polymerization reactor with said fluoromonomers; (c) initiating a polymerization reaction of said fluoromonomers to form said fluoropolymer; (d) propagation of said polymerization reaction, wherein a second surfactant combination of at least one fluorinated surfactant and at least one non-fluorinated surfactant is 15 metered or one shot dosed into the polymerization reactor; and (e) termination of said polymerization reaction after consumption of a desired quantity of said fluoromonomers.
The present invention relates to a process for the polymerization of fluoromonomers in an aqueous medium, said process comprising the steps of: forming an aqueous emulsion comprising a 2-Alkoxy acetate surfactant and fluoromonomer in a reactor; and initiating polymerization of said fluoromonomer by adding an initiator into the reaction mixture. Preferably, the surfactant used in the instant process is either Sodium 2-[(2-hexyldecyl)oxy] acetate or Sodium-2-dodecyloxyacetate.
The present invention discloses a process for polymerizing fluoromonomers in an aqueous medium to form a fluoropolymer, said process comprising the steps of: (a) forming an aqueous solution comprising a first surfactant combination of at least one fluorinated surfactant and at least one non- 10 fluorinated surfactant in a polymerization reactor; (b) pressurizing the polymerization reactor with said fluoromonomers; (c) initiating a polymerization reaction of said fluoromonomers to form said fluoropolymer; (d) propagation of said polymerization reaction, wherein a second surfactant combination of at least one fluorinated surfactant and at least one non-fluorinated surfactant is 15 metered or one shot dosed into the polymerization reactor; and (e) termination of said polymerization reaction after consumption of a desired quantity of said fluoromonomers.
The present invention relates to a process for polymerizing a fluoromonomer in an aqueous dispersion medium, comprising: (a) forming an aqueous solution comprising a first surfactant combination of fluorinated Perfluorobutanesulfonic acid or a salt thereof, and non-fluorinated sulfonate type hydrocarbon surfactant in a polymerization reactor; (b) pressurizing the reactor with fluoromonomers to form an aqueous emulsion; (c) initiating polymerization reaction of said fluoromonomers, using suitable initiator combination; (d) propogation of polymerization reaction, wherein a second surfactant combination of fluorinated Perfluorobutanesulfonic acid or a salt thereof, and non-fluorinated sulfonate type hydrocarbon surfactant is metered into the reactor; and (e) termination of the reaction after consumption of desired quantity of fluoromonomers; wherein the proportions of the surfactants in the first surfactant combination is same or different from the second surfactant combination.
The present invention relates to a process for preparing fluoropolymers or fluoroelastomers in an aqueous medium using a non fluorinated sulfonate type hydrocarbon containing surfactant, said process comprising the steps of: (a) forming an aqueous solution comprising an non-fluorinated, hydrocarbon containing, sulfonate anionic type surfactant in a polymerization reactor; (b) pressurizing the reactor with fluoromonomers to form an aqueous emulsion; (c) initiating polymerization of said fluoromonomers; and (d) Propagating the reaction (e) Terminating the reaction after consumption of desired weight of fluoromonomers; wherein the non-fluorinated, hydrocarbon containing, sulfonate type surfactant comprises 18 to 36 carbon atoms, wherein the molecular weight of the fluoropolymer ranges from 1 × 103to 9 × 108 g/mol and wherein said process is devoid of passivating the surfactant.
C08F 214/00 - Copolymères de composés contenant un ou plusieurs radicaux aliphatiques non saturés, chaque radical ne contenant qu'une seule liaison double carbone-carbone et l'un au moins étant terminé par un halogène
The present invention relates to low molecular weight polytetrafluoroethylene (PTFE) micropowder, The present invention relates to production of low molecular weight PTFE micropowder by direct polymerization technology and overcomes limitation of the melt viscosities over prior art and that is devoid of the step of irradiation or thermal degradation and complies with regulations on PFOA restriction in substances. The present invention relates to a process for preparing a low molecular weight polytetrafluoroethylene (PTFE) micropowder, comprising the steps of:(a) polymerizing Tetrafluoroethylene (TFE); (b) coagulating the particles of PTFE to increase particle size; (c) washing the particles of PTFE to remove impurities; and (d) drying the wet PTFE micropowder to remove moisture and volatiles.
The present invention relates to an extrusion process for preparing a low molecular weight PTFE micropowder, comprising the steps of: introducing a PTFE composition into a extruder; applying heat treatment to the extruder; extruding the PTFE composition in an extruder to reduce molecular weight through heat and shear force; cooling and pelletizing in a pelletizer to form granules of PTFE; and reducing the particle size of PTFE granules by milling method to form low molecular weight PTFE micropowder. The present invention also relates to an extrusion process for degradation of high molecular weight PTFE to produce low molecular weight Polytetrafluoroethylene micropowder.
C08L 27/12 - Compositions contenant des homopolymères ou des copolymères de composés possédant un ou plusieurs radicaux aliphatiques non saturés, chacun ne contenant qu'une seule liaison double carbone-carbone et l'un au moins étant terminé par un halogèneCompositions contenant des dérivés de tels polymères non modifiées par un post-traitement chimique contenant du fluor
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
02 - Couleurs, vernis, laques
04 - Huiles et graisses industrielles; lubrifiants; combustibles
17 - Produits en caoutchouc ou en matières plastiques; matières à calfeutrer et à isoler
Produits et services
Chemical used in industry, science, photography,
agriculture, horticulture and forestry; unprocessed
artificial resins, unprocessed plastics; fire extinguishing
and fire prevention compositions; tempering and soldering
preparations; substances for tanning animal skins and hides;
adhesives for use in industry; putties and other paste
fillers; compost, manures, fertilizers; biological
preparations for use in industry and science; chemical
substances for preserving foodstuffs; unprocessed
fluoropolymer resins; refrigerant gases. Paints, varnishes, lacquers; preservatives against rust and
against deterioration of woods; colorants, dyes; inks for
printing, marking and engraving; raw natural resins; metals
in foil and powder form for painters, decorators, printers
and artists. Industrial oils and greases; wax; lubricants; dust
absorbing, wetting and binding compositions; fuels
(including motor spirit) and illuminants; candles, wicks. Rubber, unprocessed and semi-processed rubber; gutta-percha,
asbestos, mica and goods made from these materials; plastics
in extruded form for use in manufacture; packing, stopping
and insulating materials; flexible pipes, tubes and hoses,
not of metal.
19.
GFL GUJARAT FLUOROCHEMICALS VALUE THROUGH GREEN CHEMISTRY
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
02 - Couleurs, vernis, laques
04 - Huiles et graisses industrielles; lubrifiants; combustibles
17 - Produits en caoutchouc ou en matières plastiques; matières à calfeutrer et à isoler
Produits et services
Chemical used in industry, science, photography, agriculture, horticulture and forestry except fungicides, herbicides, insecticides, and parasiticides; unprocessed artificial resins, unprocessed plastics; fire extinguishing and fire prevention compositions; tempering and soldering preparations; substances being tanning agents for tanning animal skins and hides; adhesives for use in industry; putties, namely, glazier's putty, oil cement putty and paste fillers for automotive body repair and industrial applications; compost, manures, fertilizers; biological preparations for use in industry and science; chemical substances being preparations for preserving foodstuffs; unprocessed fluoropolymer resins for use in extrusion and molding; refrigerant gases for use in industrial cooling systems, air conditioning systems, cold warehousing systems, and pharmaceutical storage systems Paints, varnishes, lacquers; preservatives against rust and against deterioration of woods in the nature of a coating; colorants, vat, mordant, basic, fabric dyes; inks for printing, marking animals and engraving; raw natural resins; metals in foil and powder form for use in painting, decorating and art by painters, decorators, printers and artists Industrial oils and greases; wax for lighting; automobile, machine, all purpose lubricants; dust absorbing compositions, binding compositions; fuels, motor fuel, and petroleum illuminants; candles, candle, lamp wicks Rubber raw or semi-worked, unprocessed and semi-processed rubber; gutta-percha, asbestos, mica and goods made from these materials, namely, Mica blocks,mica sheets, mica powder, mica paper, mica tapes, mica tube, mica insulator, mica strip and mica flakes; plastics in extruded form for use in manufacture; packing, stopping and insulating materials; flexible pipes, tubes and hoses, not of metal
20.
A PROCESS FOR THE PREPARATION OF CARBOXYMETHYLATED ALCOHOL
The present invention discloses a process for the preparation of carboxymethylated alcohol, comprising: reacting alcohol, chloroacetic acid and hydroxide in a polar protic solvent, wherein the reaction time is in the range of 10 to 30 min, wherein the reaction is carried out at a temperature of 25 to 60 °C, wherein the ratio between the reactants alcohol, chloroacetic acid and hydroxide is 1:1:1-2 and wherein the yield of the reaction is between 65 to 75%.
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
02 - Couleurs, vernis, laques
04 - Huiles et graisses industrielles; lubrifiants; combustibles
17 - Produits en caoutchouc ou en matières plastiques; matières à calfeutrer et à isoler
Produits et services
Chemical used in industry, science, photography, agriculture, horticulture and forestry; unprocessed artificial resins, unprocessed plastics; fire extinguishing and fire prevention compositions; tempering and soldering preparations; substances for tanning animal skins and hides; adhesives for use in industry; putties and other paste fillers; compost, manures, fertilizers; biological preparations for use in industry and science; chemical substances for preserving foodstuffs; unprocessed fluoropolymer resins; refrigerant gases. Paints, varnishes, Lacquers; Preservatives against rust and against deterioration of woods; colorants, dyes; inks for printing, marking and engraving; raw natural resins; metals in foil and powder form for painters, decorators; printers and artists. Industrial oils and greases; wax; lubricants; dust absorbing, wetting and binding compositions; fuels (including motor spirit) and illuminants; candles, wicks. Rubber, unprocessed and semi-processed rubber; gutta-percha, asbestos, mica and goods made from these materials; plastics in extruded form for use in manufacture; packing, stopping and insulating materials; flexible pipes, tubes and hoses, not of metal.
22.
PROCESS FOR PRODUCING FLUOROPOLYMERS USING 2-ALKOXYACETATE SURFACTANTS
The present invention relates to a process for the polymerization of fluoromonomers in an aqueous medium, said process comprising the steps of: forming an aqueous emulsion comprising a 2-Alkoxy acetate surfactant and fluoromonomer in a reactor; and initiating polymerization of said fluoromonomer by adding an initiator into the reaction mixture. Preferably, the surfactant used in the instant process is either Sodium 2-[(2-hexyldecyl)oxy] acetate or Sodium-2-dodecyloxyacetate.
The present invention relates to a process for the polymerization of fluoromonomer in an aqueous medium, said process comprising the steps of: forming an aqueous emulsion comprising fluoromonomer and perfluorobutanesulfonic acid or salt thereof as surfactant; and initiating polymerization of said fluoromonomer by adding an initiator. Said process of polymerization is carried out in the presence of reduced quantity of fluorosurfactant, without affecting the fluoropolymer particle size. Perfluorobutane sulfonic acid, which is a short chain fluorosurfactant, is less toxic than long chain fluorinated surfactants.
Process of producing Ethyl difluoroacetateby reacting 1,1,2,2 –Tetrafluoro-1-Ethoxy Ethane with an oxide of elements selected from the groups 13 or 15 in the presence of sulphuric acid followed by the addition of an alcohol to produce ethyl difluoroacetate and a useful by-product.
17 - Produits en caoutchouc ou en matières plastiques; matières à calfeutrer et à isoler
Produits et services
Fluorinated synthetic rubber; FKM; FPM; fluoroelastomer; fluoropolymer; rubber and rubber material; goods made from rubber; plastic and plastic substances; fiber; vulcanized fiber and vulcanite; plastics for use in manufacture; unprocessed and semi-processed rubber; gum; asbestos; mica and substitutes for all these materials; plastics in extruded form for use in manufacture; packing, stopping and insulating materials; flexible pipes, not of metal.
