Abstract

The invention relates to an aqueous coating composition comprising a film-forming first polymer and a second polymer for improving the open time, the wet edge time, adhesion and/or hardness of the resulting coating. The invention further relates to said novel second polymer, its use in coating compositions for improving the open time and coalescence. The water soluble second polymer is an addition polymer comprising 25 - 95 wt% specific non-ionic hydrophilic monomers A and 5 - 75 wt% of hydrophobic monomers B which second polymer is sparingly water soluble and a solution of only said second polymer in water has a substantially Newtonian flow behaviour in a wide solid contents range.

IPC Classes  ?

• C09D 133/26 - Homopolymers or copolymers of acrylamide or methacrylamide
• C09D 175/00 - Coating compositions based on polyureas or polyurethanesCoating compositions based on derivatives of such polymers
• C09D 175/04 - Polyurethanes
• C08L 75/04 - Polyurethanes
• C08L 101/12 - Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity
• C09D 139/06 - Homopolymers or copolymers of N-vinyl-pyrrolidones
• C09D 167/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C09D 5/02 - Emulsion paints
• C09D 133/08 - Homopolymers or copolymers of acrylic acid esters
• C09D 133/10 - Homopolymers or copolymers of methacrylic acid esters
• C08L 33/08 - Homopolymers or copolymers of acrylic acid esters
• C08L 33/10 - Homopolymers or copolymers of methacrylic acid esters
• C08L 33/12 - Homopolymers or copolymers of methyl methacrylate
• C08F 220/44 - Acrylonitrile
• C08F 220/54 - Amides

Abstract

The present invention relates to a crosslinkable composition crosslinkable by Real Michael Addition (RMA) reaction comprising a component with at least 2 activated unsaturated groups (hereafter referred to as the RMA acceptor groups) and a component with at least 2 acidic protons C-H in activated methylene or methine groups (hereafter referred to as the RMA donor groups) which components can react to form a crosslinked network. The composition comprises: f. Component(s) A having at least 2 acidic C-H donor groups in activated methylene or methine and having a pKa(A) between 10.5 and 14; g. Component(s) B having at least 2 activated unsaturated acceptor groups, wherein a molar ratio R of acceptor groups to donor groups is between 3:1 to 1:6 and which component(s) B react with component(s) A by Real Michael Addition (RMA) to form a crosslinked network; h. basic component(s) C being a salt of a basic anion X- from an acidic X-H group containing compound wherein X is N, P, O, S or C: iv. in an amount xc between 0.001 and 1 meq/(gr of components A, B, C, D), v. anion X- being a Michael Addition donor reactable with component B and vi. anion X- is characterized by a pKa(C) of the corresponding acid X-H of more than two units lower than the pKa(A) of the majority component A and being lower than 10.5; i. optional component(s) D comprising one or more acidic X'-H groups wherein X' is N, P, O, S or C: v. X' being a same or different group as group X in component C, vi. the X'- anion being a Michael Addition donor reactable with component B, vii. the pKa(D) of the X'-H group in component D being more than two units lower than pKa(A) of the majority component A and being lower than 10.5, viii. the equivalent ratio Rd/c of acidic X'-H groups in component D over basic anion X- in component C is between 1% and 5000%.

IPC Classes  ?

• C08K 5/16 - Nitrogen-containing compounds

Abstract

The invention relates to a crosslinkable composition comprising a) at least one crosslinkable component that is crosslinkable under the action of a base catalyst, b) a first carbonate salt according to formula 1 as latent base crosslinking catalyst, (meq latent base relative to dry total weight of the crosslinkable composition) wherein X+ represents a non-acidic cation and wherein R is hydrogen, alkyl, or aralkyl group and c) a second carbonate salt according to Formula 2 as potlife extender: wherein Y is N or P and wherein each R' can be hydrogen, a substituted or unsubstituted alkyl, aryl or aralkyl group, wherein the second carbonate is present in an amount of at least 5 mole % and preferably at most 500 mole % relative to the molar amount of the first carbonate The invention further relates to catalyst compositions composed of the first and second carbonate salt, to the use of the catalyst composition as base catalyst system in crosslinkable compositions and the crosslinkable compositions, in particular coating compositions comprising the catalyst composition.

IPC Classes  ?

• C08J 3/00 - Processes of treating or compounding macromolecular substances

Abstract

Abstract of the invention. The invention relates to an RMA crosslinkable composition comprising at least one crosslinkable component comprising reactive components A and B each comprising at least 2 reactive groups wherein the at least 2 reactive groups of component A are acidic protons (C-H) in activated methylene or methine groups and the at least 2 reactive groups of component B are activated unsaturated groups (C=C) and a base catalyst (C) which reactive components A and B crosslink by Real Michael Addition (RMA) reaction under action of the base catalyst, characterised in that the at least one crosslinkable component comprising reactive components A and B in the composition have a total hydroxy number of less than 60, preferably less than 40 and more preferably less than 20 mg KOH/g solids. The invention further relates to specific resins A and B having a low hydroxy number for use in RMA cross-linkable compositions and to a process for the manufacture thereof.

IPC Classes  ?

• C08J 3/00 - Processes of treating or compounding macromolecular substances

Abstract

An RMA crosslinkable composition for making thick coating layers comprising at least one crosslinkable component comprising reactive components A and B each comprising at least 2 reactive groups wherein the at least 2 reactive groups of component A are acidic protons (C-H) in activated methylene or methine groups (the RMA donor group),and the at least 2 reactive groups of component B are activated unsaturated groups (C=C) (the RMA acceptor group),to achieve crosslinking by Real Michael Addition (RMA) reaction, said composition further comprising a base catalyst (C), an X-H group containing component (D) that is also a Michael addition donor reactable with component B under the action of catalyst C, wherein X is C, N, P, O or S and a sag control component (E). The invention also relates to the use of the crosslikable composition for preparing thick coating layers having a dry thickness of at least 70mu having a good surface appearance and hardness of the resulting cured composition.

IPC Classes  ?

• C08J 3/00 - Processes of treating or compounding macromolecular substances

Abstract

The invention relates to a crosslinkable composition comprising a component A with at least 2 acidic protons C-H in activated methylene or methine groups (the RMA donor group), and a component B with at least 2 activated unsaturated groups (the RMA acceptor group), and a catalyst system C that contains, or is able to generate a basic catalyst capable of activating the RMA reaction between components A and B, characterised in that the crosslinkable composition further comprises an X-H group containing component D that is also a Michael addition donor reactable with component B under the action of catalyst C, wherein X is N, P, O, S or wherein X is C as part of an acidic methyl (CH3) group. The invention further relates to the use of component D and of catalyst additive mixtures for the manufacture of RMA crosslinkable composition having improved surface appearance.

IPC Classes  ?

• C08J 3/00 - Processes of treating or compounding macromolecular substances

Abstract

The invention relates to a process for the preparation of aqueous vinyl polymer dispersions having good film forming properties, good stability and in can clarity, to the polymer dispersions obtainable by the process and coating compositions prepared from said polymer dispersions and the use thereof. The process comprising, (1) a first polymerisation step comprising (1a) preparing an emulsion (1A) in water of a first monomer mixture (1a1) comprising carboxylic acid functional monomers, a surfactant (1a2) and water soluble inorganic salt (1a3) wherein surfactant (1a2) is a sulfur based anionic surfactant containing less than 60 wt% ethylene oxide and wherein the salt (1a3) content at the start of polymerization (1b) is between 0.01 and 3 gr/kg water, (1b) emulsion polymerizing the obtained emulsion 1A forming a hydroplasticisable first stage polymer particle dispersion (1B) said first stage polymer having a Tg from 10 to 125°, (2) a second polymerization step comprising (2a) adding to dispersion 1B a second monomer mixture (2a1) wherein carboxylic acid functional monomers is present in an amount such that the acid value of the resulting polymer is less than 23 KOH/g and wherein the amount of monomer mixture (2a1) is between 10 and 90 wt% of the total weight of monomers (1a1) plus (2a1), (2b) polymerizing second monomer mixture (2a1) to form a second stage polymer in the first particle dispersion (1B) to form a multiphase particle dispersion (2B).

IPC Classes  ?

• C08F 2/26 - Emulsion polymerisation with the aid of emulsifying agents anionic
• C08F 2/38 - Polymerisation using regulators, e.g. chain terminating agents
• C08F 265/06 - Polymerisation of acrylate or methacrylate esters on to polymers thereof
• C09D 5/02 - Emulsion paints
• C09D 151/00 - Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCoating compositions based on derivatives of such polymers

Abstract

The invention relates to a mixture of glycerol, mono-, di-and triacetylglycerolester in which the amount of tri-ester is less than 15 mol%, the amount of glycerol is less than 25 mol%, the amount of monoester is about 20 mol% or more, more preferred about 30 mol% or more and the amount of diester is about 20 mol% or more preferred about 40 mol% or more. The invention further relates to methods to prepare such glycerolacetylester mixtures, and to the use thereof in the preparation of unsaturated polyesters. Polyesters comprising said glycerolacetylester mixtures are made from a higher amount of raw materials than obtainable from renewable resources.

IPC Classes  ?

• C07C 67/08 - Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
• C07C 69/18 - Acetic acid esters of trihydroxylic compounds
• C08G 63/52 - Polycarboxylic acids or polyhydroxy compounds in which at least one of the two components contains aliphatic unsaturation
• C08L 67/06 - Unsaturated polyesters

Abstract

The invention relates to an aqueous dispersion for use as open time improver in a coating composition which aqueous polymer dispersion comprises a first polymer having a number average molecular weight (Mn) of from 2,000 to 120,000 (determined by gel permeation chromatography using a mixture of tetrahydrofurane and acetic acid as eluent), an acid value of from 30 to 150 mg KOH/g, and an ethylene-oxide wt% (on total solid polymer) of from 1 to 20 wt%, said first polymer dispersion being obtainable by free radical polymerization of a monomer mixture in the presence of at least one free-radical initiator and at least one surfactant, said monomer mixture comprising : a) 5 to 20 wt%, preferably 7 to 10wt%, acid functional ethylenically unsaturated monomers or precursors thereof or ethylenically unsaturated monomers comprising ionic group precursors; b) 5 to 25 wt%, preferably 7 to 20 wt%, ethylenically unsaturated monomers containing polyethylene oxide, polyethylene glycol or mono-alkoxypolyethylene glycol moeity c) up to 90 wt% of non-ionic ethylenically unsaturated monomers other than a) or b); d) 0 to 10 wt% ethylenically unsaturated monomers with a functional group for cross-linking e) 0 to 10 wt% of chain transfer agents; f) up to 90 wt% non-ionic ethylenically unsaturated monomers other than c), wherein 30 to 90 wt%, more preferably 60 to 80 wt% comprise crosslinkable groups or precursors thereof; wherein the sum of a) through f) is 100wt%. The invention further relates to a method for making the first polymer dispersion, the use of said aqueous dispersion as an open time improver in a coating composition, to aqueous coating compositions comprising a blend of at least a first aqueous polymer dispersion and a second aqueous polymer dispersion comprising a film-forming second polymer and to a method for making said coating composition.

IPC Classes  ?

• C08F 220/06 - Acrylic acidMethacrylic acidMetal salts or ammonium salts thereof
• C08F 220/26 - Esters containing oxygen in addition to the carboxy oxygen
• C08L 33/02 - Homopolymers or copolymers of acidsMetal or ammonium salts thereof
• C08L 33/14 - Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
• C09D 133/02 - Homopolymers or copolymers of acidsMetal or ammonium salts thereof
• C09D 133/14 - Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
• C08F 2/24 - Emulsion polymerisation with the aid of emulsifying agents
• C08F 2/38 - Polymerisation using regulators, e.g. chain terminating agents
• C09D 5/02 - Emulsion paints
• C09D 175/14 - Polyurethanes having carbon-to-carbon unsaturated bonds
• C08F 220/28 - Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
• C08F 265/06 - Polymerisation of acrylate or methacrylate esters on to polymers thereof
• C09D 167/08 - Polyesters modified with higher fatty oils or their acids, or with natural resins or resin acids

Abstract

The present invention relates to a crosslinkable composition comprising at least one crosslinkable component and a latent base crosslinking catalyst, which crosslinkable composition has a solids content of typically at least 55 wt (dry weight after crosslinking relative to the total weight of the crosslinking composition) wherein the latent base catalyst is a substituted carbonate salt according to formula (I) wherein X+ represents a non acidic cation, preferably a quaternary ammonium or phosphonium, and wherein R is hydrogen, alkyl, aryl or aralkyl group. The invention relates in particular to a composition crosslinkable by Real Michael Addition (RMA) reaction wherein a component with at least 2 activated unsaturated groups and a component with at least 2 acidic protons C-H in activated methylene or methine groups, preferably malonate react and crosslink to each other in the presence of the base catalyst. The invention further relates to a coating composition comprising the crosslinkable composition according to the invention, a novel catalyst composition and to the use of said catalyst composition according to the invention as a latent base crosslinking catalyst in coating compositions, preferably in RMA crosslinkable compositions.

IPC Classes  ?

• C08J 3/24 - Crosslinking, e.g. vulcanising, of macromolecules

Abstract

The present invention relates to a crosslinkable composition comprising at least one crosslinkable component and a latent base crosslinking catalyst, which crosslinkable composition has a solids content of typically at least 55 wt (dry weight after crosslinking relative to the total weight of the crosslinking composition) wherein the latent base catalyst is a substituted carbonate salt according to formula (I) wherein X+ represents a non acidic cation, preferably a quaternary ammonium or phosphonium, and wherein R is hydrogen, alkyl, aryl or aralkyl group. The invention relates in particular to a composition crosslinkable by Real Michael Addition (RMA) reaction wherein a component with at least 2 activated unsaturated groups and a malonate component with at least 2 acidic protons C-H in activated methylene or methine groups react and crosslink to each other in the presence of the base catalyst. The invention further relates to a coating composition comprising the crosslinkable composition according to the invention, a novel catalyst composition and to the use of said catalyst composition according to the invention as a latent base crosslinking catalyst in coating compositions, preferably in RMA crosslinkable compositions of the base catalyst. The invention further relates to a coating composition comprising the crosslinkable composition according to the invention, a novel catalyst composition and to the use of said catalyst composition according to the invention as a latent base crosslinking catalyst in coating compositions, preferably in RMA crosslinkable compositions.

IPC Classes  ?

• C08J 3/24 - Crosslinking, e.g. vulcanising, of macromolecules

Abstract

The present invention relates to a crosslinkable composition comprising at least one crosslinkable component crosslinkable by a latent base crosslinking catalyst comprising a substituted carbonate salt according to formula 1 wherein X+ represents a cation and wherein R is hydrogen, alkyl, aryl or aralkyl group, and wherein the crosslinkable composition comprises 0.1 – 10 wt%, preferably 0.1-5, more preferably 0.2-3 and most preferably 0.5-1.5 wt% water (relative to total weight of the crosslinkable composition). The invention further relates to a coating composition comprising the crosslinkable composition according to the invention, a novel catalyst composition and to the use of said catalyst composition according to the invention as a latent base crosslinking catalyst in coating compositions, preferably in RMA crosslinkable compositions.

IPC Classes  ?

• C08J 3/24 - Crosslinking, e.g. vulcanising, of macromolecules

Abstract

The invention relates to a process for the manufacture of an auto-oxidatively cross-linking hybrid polymer, in particular an aqueous hybrid polymer dispersion, comprising the step of reacting in a mini-emulsion process one or more ethylenically unsaturated monomers to form an addition polymer (also referred to as a vinyl polymer) in the presence of a modified auto-oxidatively crosslinkable (AOC) polymer which has been modified with terminal unsaturated groups of the formula C(R1)=CH2 wherein R1 can be hydrogen, alkyl or aryl and wherein the modified AOC polymer is a hydrophobic polymer having an acid number between 5 to 30. In particular, the invention relates to a process comprising mixing one or more modified AOC polymers, one or more ethylenically unsaturated monomers and one or more surfactants and forming a mini-emulsion in water and addition polymerizing the unsaturated monomers in the mini-emulsion to form a dispersion of hybrid particles of the modified auto-oxidatively crosslinkable polymer and the addition polymer. The invention further relates to the aqueous hybrid polymer dispersion obtainable by the process according to the invention, the use thereof for the manufacture of coating compositions, ink compositions or adhesives and to coating compositions comprising the hybrid polymer dispersion as a binder.

IPC Classes  ?

• C08F 283/00 - Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass
• C08F 283/01 - Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass on to unsaturated polyesters
• C08F 290/06 - Polymers provided for in subclass
• 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 invention relates to amino and hydroxy-functional polyesters, wherein the amine is in the form of aspartic acid esters functionality, and wherein the amino and hydroxy- functional polyester has (a) a molecular weight (Mn) of at least about 500, (b) an acid value of about 5 or less, (c) a hydroxyl value of about 30 or more, and (d) an amine value of about 30 or more, and (e) an amine functionality of less than 1.8. Preferably, the compound comprises molecules having on the average: at least 1 secondary amino group as an aspartate, and/or at least 1 hydroxy group, and an average total functionality of about 1.8 or higher. More preferably, the molecular weight of the amino and hydroxy-functional polyesters is between 204 and 10,000 and preferably between 482 and 5000.

IPC Classes  ?

• C09D 175/12 - Polyurethanes from compounds containing nitrogen and active hydrogen, the nitrogen atom not being part of an isocyanate group
• C08G 18/46 - Polycondensates having carboxylic or carbonic ester groups in the main chain having hetero atoms other than oxygen
• C08G 18/62 - Polymers of compounds having carbon-to-carbon double bonds
• C08G 63/685 - Polyesters containing atoms other than carbon, hydrogen, and oxygen containing nitrogen
• C08G 63/91 - Polymers modified by chemical after-treatment
• C09D 167/00 - Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chainCoating compositions based on derivatives of such polymers

Abstract

The invention relates to amino and hydroxy-functional compounds other than polyesters, wherein the compound comprises an amine in the form of aspartic acid esters functionality, and wherein the amino and hydroxy-functional compound has (a) a molecular weight (Mn) of at least about 500, (b) an acid value of about 5 or less, (c) a hydroxyl value of about 30 or more, and (d) an amine value of about 30 or more. Preferably, the compound comprises molecules having on the average: at least 1 secondary amino group as an aspartate, and/or at least 1 hydroxy group, and an average total functionality of about 1.8 or higher.

IPC Classes  ?

• C09D 175/12 - Polyurethanes from compounds containing nitrogen and active hydrogen, the nitrogen atom not being part of an isocyanate group
• C08G 18/46 - Polycondensates having carboxylic or carbonic ester groups in the main chain having hetero atoms other than oxygen
• C08G 18/62 - Polymers of compounds having carbon-to-carbon double bonds
• C08G 63/685 - Polyesters containing atoms other than carbon, hydrogen, and oxygen containing nitrogen
• C08G 63/91 - Polymers modified by chemical after-treatment
• C09D 133/14 - Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen

Abstract

The invention relates to a crosslinkable polymer binder comprising a polyurethane macromer and grafted thereon a vinyl polymer, the macromer being prepared by reacting: I a monomer (I) comprising 2 or more hydroxy functional groups, II a monomer (II), comprising 2 or more isocyanate functional groups, III a stabilizing monomer (III) comprising ionically and/or non-ionically stabilising groups, IV a graft monomer (IV) having only one group reactive with monomer I or Il and one vinyl group, V a chain stopper monomer (V) having only one group reactive with monomer I or II, wherein at least 30 mole %, of the macromers have only one graft monomer IV and less than 50 mole % of the macromers have two or more graft monomers IV, wherein the vinyl polymer is linked to the vinyl group of graft monomer IV and wherein the vinyl polymer and/or the macromer comprise crosslinkable groups. The invention further relates to an aqueous dispersion comprising said crosslinkable polymer binder and to a process for the manufacture of said crosslinkable polymer binder and said aqueous dispersion thereof. The crosslinkable polymer binder can be used in coating compositions or adhesives.

IPC Classes  ?

• C08F 283/00 - Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass
• C08F 290/06 - Polymers provided for in subclass
• C08F 290/14 - Polymers provided for in subclass
• 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
• C09D 151/08 - Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCoating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• C09J 151/08 - Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsAdhesives based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds

Abstract

The invention relates to a process for the preparation of an aqueous hybrid polymer dispersion comprising an auto-oxidatively crosslinkable polymer and an addition polymer. The invention further relates to the aqueous hybrid polymer dispersion obtainable by said process, the use thereof for the manufacture of coating compositions, ink compositions or adhesives and to coating compositions comprising the hybrid polymer dispersion as a binder. The process comprises a first polymerization step wherein a first hybrid polymer dispersion is formed by addition polymerization of vinyl monomers in the presence of dispersed auto-oxidatively crosslinkable polymer and a second polymerization step wherein secondary polymerization loci are provided in the first hybrid polymer dispersion to polymerise residual vinyl monomer of the first polymerisation step. The aqueous hybrid polymer dispersions have very low residual vinyl monomer content by achieving a high if not full conversion of the vinyl monomers at the end of the polymerization.

IPC Classes  ?

• C08F 283/00 - Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass
• C08F 289/00 - Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds not provided for in groups
• C08F 290/06 - Polymers provided for in subclass
• C08F 290/14 - Polymers provided for in subclass
• C08L 51/00 - 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
• 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
• C09D 151/00 - Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCoating compositions based on derivatives of such polymers
• C09D 151/08 - Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCoating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• C08F 2/24 - Emulsion polymerisation with the aid of emulsifying agents
• C09J 151/00 - Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsAdhesives based on derivatives of such polymers
• C09J 151/08 - Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsAdhesives based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds

Abstract

A process for the preparation of a thixotropic aqueous coating composition comprising the steps of: i) providing an aqueous dispersion of a binder system comprising carbonyl and hydrazide functional groups for crosslinking; and ii) reacting in the aqueous dispersion, an ether amine with a tris(isocyanate) isocyanurate to form a polyurea sag control agent.

IPC Classes  ?

• C09D 5/04 - Thixotropic paints
• C08K 5/3492 - Triazines

Abstract

The invention relates toahydroxy functional binder for a primer coating composition comprising one or more epoxy functional compounds wherein epoxy groups have been esterified with a phosphorus acid compound. According to the invention, the hydroxy functional binder comprises one or more epoxy functional compounds wherein a part of the epoxy groups have been esterified with a phosphorus acid compound to form a hydroxy functional phosphate group and a part of the epoxy groups havebeen reacted with a blocking compound to form a hydroxy functional blocking group -X-R, wherein X is O, S, OC(=O) or N, forming an ether, a thio-ether, a carboxylic acid ester or an amine respectively, and wherein R is a substituted or unsubstitutedhydrocarbon radical.The invention further relates to aprocess for the preparation of the hydroxy functional binder, to a primer coating composition comprising thehydroxy functional binderand a crosslinking agent and to the use ofa hydroxy functional binderfor corrosion protection and/or for promoting adhesion of coatings on substrates, in particular metal substrates.Theprimercoating compositionisuseful for applicationdirectly on metal substratesfor improving corrosion protection and adhesion and a single coating layer thereof can replace a wash primer and surfacer coating layer.

IPC Classes  ?

• C08G 18/58 - Epoxy resins
• C08G 59/14 - Polycondensates modified by chemical after-treatment
• C08G 59/18 - Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
• C08G 59/40 - Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups characterised by the curing agents used
• C08G 63/42 - Cyclic ethersCyclic carbonatesCyclic sulfitesCyclic orthoesters
• C08G 63/692 - Polyesters containing atoms other than carbon, hydrogen, and oxygen containing phosphorus
• C09D 5/00 - Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects producedFilling pastes

Abstract

A polymeric composition for making aqueous polymeric dispersions, comprises hydrophilic macromonomer (I), hydrophobic polymer (II) and bridging monomer (III), wherein the hydrophilic macromonomer (I) and hydrophobic polymer (II) are grafted together in the presence of bridging monomer (III) and the hydrophilic macromonomer (I) has a structure according to formula (1): R-C(X)=CH2, wherein R is a polymeric group and X is a radical stabilizing group. The aqueous polymeric composition is used for making a coating composition, a printing ink, an adhesive, a sealant or caulking material.

IPC Classes  ?

• C08F 290/06 - Polymers provided for in subclass
• C08F 290/04 - Polymers provided for in subclasses or
• C08F 290/14 - Polymers provided for in subclass
• C08L 51/00 - 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
• C09D 151/00 - Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCoating compositions based on derivatives of such polymers
• C08F 293/00 - Macromolecular compounds obtained by polymerisation on to a macromolecule having groups capable of inducing the formation of new polymer chains bound exclusively at one or both ends of the starting macromolecule
• C08F 287/00 - Macromolecular compounds obtained by polymerising monomers on to block polymers
• C08F 283/06 - Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass on to polyethers, polyoxymethylenes or polyacetals
• C09J 151/00 - Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsAdhesives based on derivatives of such polymers
• C08F 8/00 - Chemical modification by after-treatment

Abstract

The present invention relates to afilm forming composition comprisinga resin andmodified nanoparticles comprising nanoparticles and adsorbed thereon a segmented copolymer, preferably a segmented blockcopolymer, comprising an adsorbing segment and a hydrophobic surface active segment, wherein the adsorbing segment has one or more functional groups that adsorb on the nanoparticles and wherein the hydrophobic segment is more hydrophobic than the resin providing surface migration of the nanoparticles. The invention also relates to novelmodified particles and the use of the specified segmented copolymer of specified modified particels in afilm forming composition for imparting thereto improvedsurface properties such as scratch resistance.

IPC Classes  ?

• C09C 3/10 - Treatment with macromolecular organic compounds
• C09D 7/12 - Other additives

Abstract

A process for the preparation of an aqueous dispersion of an auto-oxidatively drying polyurethane, comprising the steps of: a) forming the auto-oxidatively drying polyurethane by reacting an unsaturated fatty acid esterified polyol, a hydroxyl functional polyalkene having one or more unsaturated bonds in the backbone chain between 2 hydroxyl groups, a polyhydroxy carboxylic acid, a polyisocyanate, and optionally a diol having no polyunsaturation; b)optionally adding a neutralizing agent; and c) dispersing the product of step (a) or (b) in water to form an aqueous dispersion. The invention further relates to aqueous dispersions and coating compositions of an auto-oxidatively drying polyurethane, to hybrid dispersions further comprising a co- binder, preferably an acrylic binder as a co-dispersion, as a molecular hybrid or as a blend and to the use thereof for coating fabrics, plastics, wood, or metal.

IPC Classes  ?

• C08G 18/65 - Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
• C08G 18/36 - Hydroxylated esters of higher fatty acids
• C08G 18/08 - Processes
• C08G 18/69 - Polymers of conjugated dienes