Abstract: Curable coating compositions comprising either a liquid or particulate curable film-forming resinous material, a flow control agent which is a copolymer and optionally a carrier for the liquid resinous material. The copolymer is from at least one non-amino, non-hydroxyl and non-acid functional alkyl acrylate or methacrylate containing from 1 to 20 carbon atoms in the alkyl group, and functional monomer of either (i) amino functional acrylates and methacrylates in an effective amount to give the copolymer an amine value in the range from 2 to 70, or (ii) acid functional acrylate and methacrylate in an effective amount to give the copolymer an acid value in the range of from 10 to 30. Additionally, with either functional monomer (i) or (ii) another functional comonomer (iii) can be present in the copolymer which is hydroxyalkyl acrylate and/or hydroxyalkyl methacrylate and/or caprolactone polyol monomer.

Abstract: A coating composition particularly useful as a clear coating used over a pigmented base coat that has improved resistance to marring and to acid etching when exposed to natural weathering conditions containing 40-70% by weight of film forming binder and 30-60% by weight of a volatile liquid carrier for the binder; wherein the binder containsa.

Abstract: A non-yellowing one-package polyurethane coating composition containing an oxime-blocked polyisocyanate, an isocyanate-reactive material, and an imino-functional amino resin is provided. The coating composition is applied onto an acid-cured base coat and cured. The clear coat produced in this manner has good yellowness resistance and intercoat adhesion.Articles such as multi-layered coated substrates are prepared using the coating method of this invention. The coated substrates typically contain an acid-cured first layer and an adjacent layer derived from a curable composition containing an oxime-blocked polyisocyanate, an isocyanate-reactive material, and an imino-functional amino resin.

Abstract: A coating composition comprising a crosslinkable binder in an organic solvent, the binder composed of acrylic and polyester polyols plus a crosslinking agent, the polyester polyol containing a component derived from one or both of: a residue of dimer fatty acid and polyol, or residue of a polyacid and dimer alcohol, the composition being useful for coating metallic substrates.

Abstract: The present invention is directed to a polymeric vehicle, the formulated coating composition and a coating binder made from the polymeric vehicle and a method for making the polymeric vehicle where the polymeric vehicle includes a phenolic urethane reactive diluent. The phenolic urethane reactive diluent may be made from a phenolic ester alcohol having at least one aliphatic hydroxyl group.

Abstract: The present invention relates to binder compositions containingA) 40 to 95 parts by weight of OH-functional graft copolymer resins prepared by copolymerizinga) 0.1 to 10 parts by weight of polybutadienes containing at least 20% of 1,2-vinyl groups,b) 5 to 30 parts by weight of aliphatic .alpha.-olefins,c) 0.1 to 35 parts by weight of glycidyl esters of .alpha.-alkylalkane-monocarboxylic acids,d) 10 to 70 parts by weight of unsaturated, aromatic monomers,e) 5 to 60 parts by weight of hydroxyalkyl esters of acrylic and/or methacrylic acid having primary hydroxyl groups,f) 0 to 50 parts by weight of (cyclo)aliphatic esters of acrylic and/or methacrylic acid,g) 0.1 to 20 parts by weight of .alpha.,.beta.

Abstract: A method of lining a surface of a substrate comprises providing a reactive mixture which comprises (1) a resin containing active hydrogens; (2) a polycarbodiimide; and (3) an organic diluent; reacting the resin containing active hydrogens and the polycarbodiimide to chemically bind the resin and the polycarbodiimide; applying the chemically bound resin and polycarbodiimide to the surface of the substrate; and curing the chemically bound resin and polycarbodiimide in the presence of an initiator to form a cured resin material which lines the surface of the substrate.

Abstract: A curable composition and process of applying the composition and the resulting composite coatings provide improved resistance to acid etch and mar. The curable composition has (a) about 30 to 90 percent by weight, based on total weight of resin solids, of a film-forming composition selected from the group consisting of:(i) a polyepoxide and a polyacid crosslinking agent;(ii) an acrylosilane polymer, an acrylic polyol polymer, and optionally an alkylated melamine-formaldehyde crosslinking agent; and(iii) a polyisocyanate and a polymer having at least one group that is reactive with isocyanate; and(b) about 10 to 70 percent by weight, based on total weight of resin solids, of a tricarbamoyl triazine compound of the formula: C.sub.3 N.sub.3 (NHCOXR).sub.3, wherein X is nitrogen, oxygen, sulfur, phosphorus, or carbon, and R is a lower alkyl group having 1 to 12 carbon atoms, or mixtures of lower alkyl groups.

Abstract: The thermosetting coating composition in a powdery form, includes (a) a binder resin prepared by the steps comprising preparing a starting material monomer mixture of two different polymerization reactions, each of the polymerization reaction being carried out in an independent reaction path, and then concurrently carrying out both of the two different polymerization reactions in one reaction vessel; (b) a colorant; and (c) a crosslinking agent. The coating film is prepared by curing the above thermosetting coating composition.

Abstract: Aqueous, heat-curable coating compound containingfrom 38.5 to 80% by weight of one or more film-forming copolymers and/or cocondensates which are emulsifiable in water or rendered water soluble by neutralisation with bases, having a number average molecular weight (Mn) of from 800 to 10,000, a hydroxyl number of from 60 to 390 and an acid number of from 15 to 60,B) from 0 to 25.5% by weight of one or more polyester oligomers having a calculated molecular weight of from 200 to 1000, a hydroxyl number of from 280 to 600 and an acid number of from 0 to 1.5,C) from 3.5 to 40% by weight of one or more amine resin cross-linking agents andD) from 0.5 to 28% by weight of one or more masked polyisocyanates,the percentages by weight of components A) to D) being based in each case on the solids contents by weight of the resins and adding up to 100% by weight,and water and optionally one or more organic solvents, pigments, fillers and/or the conventional auxiliary agents and additives used in lacquers.

Abstract: A curable, film-forming composition is provided which includes: (a) a hydroxyl-containing acrylic solution polymer, and (b) a polyisocyanate crosslinking agent. The hydroxyl-containing acrylic solution polymer is present in an amount ranging from between about 60 to about 90 weight percent; and, the polyisocyanate crosslinking agent is present in an amount ranging from between about 10 to about 40 weight percent. The acrylic solution polymer is the reaction product of: (a) a cycloaliphatic and/or aromatic ester of (meth)acrylic acid having at least 6 carbon atoms in the cycloaliphatic and/or aromatic group, and (b) a hydroxyl functional acrylic monomer component. The hydroxyl functional acrylic monomer component is present in an amount such that the hydroxyl number of the resulting acrylic solution polymer is less than 60. This invention also provides a color-plus-clear coating system.

Abstract: Provided are compositions useful as paints which have excellent acid resistance and scratching resistance, and provide a good appearance. The thermoset compositions are comprised of a vinyl copolymer (A) comprised of lactone modified acrylic monomer and other monomer, a blocked polyisocyanate compound (B) which has been reacted with a mixture of malonic acid and acetoacetic acid, and an alkyl etherified amino resin (C).

Abstract: The present invention relates to a powder coating composition for the production of matt coatings containing as binderA) a component having hydroxyl groups,B) a polyisocyanate having blocked and optionally free isocyanate groups,C) a component having carboxyl groups and/or carboxylic anhydride groups and contains one or more of the following:C1) aliphatic and/or cycloaliphatic dicarboxylic acids having 4 to 20 carbon atoms,C2) monomeric and/or polymeric anhydrides of dicarboxylic acids C1) andC3) aliphatic hydroxycarboxylic acids having 4 to 18 carbon atoms, andD) a component which has groups that are reactive with carboxyl groups and/or carboxylic anhydride groups wherein components A), B), C) and D) are present in amounts such that1) 0.6 to 1.4 isocyanate groups of component B) are present for each hydroxyl group of component A),2) 0.3 to 1.

Abstract: The invention relates to a powder paint binder composition. The binder composition comprises a hydroxyl functional polymer and a crosslinker containing blocked isocyanate groups. The crosslinker includes (i) a crystalline compound containing blocked isocyanate groups and ii) an amorphous compound containing blocked isocyanate groups. Preferably the crosslinker is a mixture of blocked hexamethylene diisocyanate trimer and blocked 1,6-hexamethylene diisocyanate.

Abstract: A propylene block copolymer comprising a matrix phase and a dispersed phase dispersed in said matrix phase, said matrix phase comprising (a) polypropylene; said dispersed phase having an average particle diameter of from 0.1 to 5 .mu.m; and said dispersed phase comprising an outer layer comprising (b) propylene-.alpha.-olefin copolymer rubber and an inner layer comprising (c) crystalline polyethylene dispersed therein a plurality of particles comprising an outer layer comprising (b') propylene-.alpha.-olefin copolymer rubber and an inner layer comprising (a') polypropylene, a propylene block copolymer comprising a matrix phase and a dispersed phase dispersed in said matrix phase, said matrix phase comprising (a) polypropylene; said dispersed phase having an average particle diameter of from 0.1 to 5 .mu.m; and said dispersed phase comprising (b) propylene-.alpha.

Abstract: The present invention relates to a composition used for hydrophilization, which comprises:(A) a compound having a polyoxyalkylene chain, and(B) hydrophilic crosslinked polymer fine particles made of a copolymer composed of:2-50% by weight of (a) a hydrophilic monomer having a polymerizable double bond and a polyoxyalkylene or polyvinylpyrrolidone chain,20-97% by weight of (b) a (meth)acrylamide type monomer,1-30% by weight of (c) a crosslinkable unsaturated monomer,2-50% by weight of (d) a carboxyl group-containing polymerizable unsaturated monomer, and0-50% by weight of (e) a monomer having one polymerizable unsaturated group in the molecule, other than the monomers (a), (b), (c) and (d).Said composition can form a hydrophilic film superior in retention of hydrophilicity, stability and press formability, on, for example, the surfaces of heat exchanger fins.

Abstract: The present invention provides straight-chain crystalline polyuretdione which has a structure represented by formula (1): ##STR1## wherein Y represents ##STR2## X represents ##STR3## or --NCO; R.sub.1 is R.sub.2 or ##STR4## R.sub.2 is a residual group other than diol; R.sub.3 is a residual group obtained by removing an active hydrogen from a compound having one active hydrogen; R.sub.4 is a residual group obtained by removing two NCO groups from diisocyanate; and n is 1 or more,in formula (1), Y being replaced with a triazine ring represented by ##STR5## in the range of 0 to 15%, the polyuretdione having a latent NCO group content of 12 to 21% by weight, a weight-average molecular weight of 2000 to 20000 and a melting point of 60.degree. to 140.degree. C., and being not blocked at 40.degree. C. or less. The straight-chain crystalline polyuretdione of the present invention can be used as a hardener for powder coatings and does not cause a bad smell due to a blocking agent during baking of coating.

Abstract: The invention provides an adhesive for bonding together a first substrate made of a polyvinylidene fluoride resin and a second substrate. This adhesive includes an elastic fluorohydrocarbon resin, an acrylic resin, a polyvinylidene fluoride resin, a polyisocyanate, and an organic solvent. This elastic fluorohydrocarbon resin is obtained by graft copolymerization of a fluorine-containing copolymer with a vinylidene fluoride monomer. This copolymer is prepared by copolymerizing at least one first fluorine-containing monomer with at least one unsaturated monomer that has peroxy bond. The adhesive itself is superior in durability, and bond strength between the first and second substrates is also superior.

Abstract: The invention relates to nonaqueous paints which comprise(A) a hydroxyl group-containing synthetic resin or a mixture of hydroxyl group-containing synthetic resins(B) an amino resin or a mixture of amino resins(C) a blocked polyisocyanate or a mixture of blocked polyisocyanates, and(D) a pigment or a mixture of pigments, and are characterized in that component (C) contains both isocyanate groups blocked with a blocking agent (I) and isocyanate groups blocked with a blocking agent (II), in which contextthe blocking agent (I) is a dialkyl malonate or a mixture of dialkyl malonates,the blocking agent (II) is a blocking agent which is different from (I) and contains active methylene groups, or is an oxime, or is a mixture of these blocking agents, andthe ratio of equivalents between the isocyanate groups blocked with (I) and the isocyanate groups blocked with (II) is between 1.0:1.0 and 9.0:1.0.

Abstract: A waterborne coating composition comprising 5-70 weight percent solids of a curing agent and 30-95 weight percent solids of a hydroxy functional acrylic copolymer further comprising 20-70 weight percent of a vinyl aromatic, 0-40 weight percent of a hydroxy functional monomer, 0-70 weight percent of other polymerizable compounds, and 10-80 weight percent of a reaction product of a monoepoxyester and an unsaturated acid functional monomer wherein the copolymer is prepared via skew feed polymerization having a plurality of feed streams charged to a reactor and one feed stream contains 5-60 weight percent of the unsaturated acid functional monomer, 40-95 weight percent of the reaction product of a monoepoxyester and an unsaturated acid functional monomer, and 0-55 weight percent of the other polymerizable compounds.

Abstract: The invention relates to aqueous coatings comprising(A) a water-thinable polyacrylate resin and(B) a blocked polyisocyanate or a mixture of blocked polyisocyanates,wherein the water-thinable polyacrylate resin (A) has a hydroxyl number of 60 to 180, an acid number of 10 to 100, and a glass transition temperature (Tg) of -40.degree. C. to +60.degree. C.

Abstract: The present invention relates to solderable wire-coating compositions based on hydroxyl group-containing polyesters, blocked polyisocyanates, organic solvents and catalysts, which are characterized in that they containA) from 7 to 25% by weight of hydroxyl group-containing polyesters,B) from 55 to 70% by weight of a fully blocked aromatic diisocyanate adduct or of a plurality of fully blocked aromatic diisocyanate adducts,C) from 0.1 to 3% by weight of catalysts,D) from 1 to 8% by weight of a polyol or of a plurality of polyols, andE) from 1 to 36.9% by weight of an alkylene carbonate or of a plurality of alkylene carbonates,the total weight of the wire-coating compositions in each case being 100% by weight.The present invention also relates to a process for the continuous coating of wires using the solderable wire-coating compositions described.

Abstract: The present invention relates to binder compositions containingA) 40 to 95 parts by weight of OH-functional graft copolymer resins which are prepared by copolymerizing a mixture containing 0.1 to 10 parts by weight of at least one optionally functional polybutadiene having a molecular weight of 500 to 10,000 and having at least 20% by weight of side-chain 1,2-vinyl double bonds, andB) 5 to 60 parts by weight of a polyfunctional cross-linking resin selected from aminoplast resins and optionally blocked polyisocyanates,wherein the sum of the parts by weight of components A) and B) add up to 100, based on the weight of components A) and B).The present invention also relates to the use of the binder compositions according to the invention for lacquering vehicles, wood and furniture, and for preventing corrosion.

Abstract: Environmental etch resistant coatings are described. The coatings are derived from aqueous, curable coating compositions comprising:(a) a carbamate-functional grafted acrylic polymer that comprises the reaction product of a first acrylic polymer and a second acrylic polymer, with at least one of the first and second acrylic polymers having groups that impart water dispersibility to the grafted acrylic polymer, and at least one of the first and second acrylic polymers having carbamate functionality; and(b) a second component comprising a compound having a plurality of functional groups that are reactive with the carbamate functionality.

Abstract: A process is disclosed for producing a double-layered covering lacquer by using a transparent covering lacquer containing a hydroxyl group-containing polyacrylate resin produced by polymerizing (a) 10 to 51% by weight 4-hydroxy-n-butylacrylate or 4-hydroxy-n-butylmethacrylate or a mixture of 4-hydroxy-n-butylacrylate and 4-hydroxy-n-butylmethacrylate; (b) 0 to 36% by weight of a hydroxyl group-containing ester of acrylic acid different from (a) or a hydroxyl group-containing ester of methacrylic acid or a mixture of such monomers; (c) 28 to 85% by weight of an aliphatic or cycloaliphatic ester of methacrylic acid different from (a) and (b) with at least 4 C atoms in the alcohol residue or a mixture of such monomers; (d) 0 to 3% by weight of an ethylenically unsaturated carboxylic acid or a mixture of ethylenically unsaturated carboxylic acids and (e) 0 to 20% by weight of an ethylenically unsaturated monomer different from (a), (b), (c) and (d) or a mixture of such monomers, into a polyacrylate resin with a h

Abstract: Provided are novel thermosetting powder coating compositions which are useful for coating metal articles and protecting such articles from acidic corrosion. The compositions are comprised of an epoxy containing acrylic copolymer crosslinked with both an aliphatic dibasic acid and a blocked polyisocyanate.

Abstract: The invention proposes the following method of producing reactive melts which are especially useful as hotmelt adhesives:a) suitable meltable hydroxy functional or amino functional polymers or polymer mixes (A) which become liquid at temperatures above 40.degree. C. are inhomogenously mixed withb) powdered, solid, surface desactivated polyisocyanates (B) or a suspension of such polyisocyanates (B) in a low volatility carrier fluid,c) in approximately stoichiometric proportions at a temperature of at least 40.degree. C. in a static mixer so that the resultant mixture of substances exhibits partial areas in which the ratio (1) of polymer (A) to (2) solid isocyanate (B) and desactivating agent (C) is different from the average ratio of these substances or mixtures thereof within the entire mix,d) the inhomogenous mixture is extracted in a form suitable for the intended use and solidified by cooling to below the mixture's softening point.

Abstract: The present invention is directed to a coating composition for use as topcoat lacquer on a multi-layer lacquer coating for substrates such as automobile bodies and parts. The coating composition is based upon a combination of hydroxyl-functional methacrylic copolymers, carboxy-functional blocked urethane prepolymers, crosslinking agents and optional hydroxyl-functional polyesters. The carboxy-functional polyurethane prepolymer is formed from a combination of organic diols, polycarboxylic acids, polyols, hydroxyl-carboxylic acids, aliphatic or aryl polyisocyanates and monofunctional isocyanate blocking agents. The lacquer coating according to the invention has a high sulfuric acid resistance and has a high solids content.

Abstract: The invention relates to a blocked polyisocyanate having an NCO functionality of from 2.2 to 4.5 and an average molecular weight of 800 to 25,000 and containing (1) blocked isocyanate groups corresponding to an NCO content of 5 to 20 wt. % calculated as free NCO, relative to unblocked polyisocyanate, (2) 1 to 75 meq of ionic groups per 100 g of blocked polyisocyanate, and (3) 3 to 40 wt.

Abstract: The present invention relates to a process for preparing aqueous binders for aqueous coating compositions by reacting a mixture ofA) 9.9 to 85 wt. % of a hydroxy- and acid-functional poly(meth)acrylate andB) 14.9 to 90 wt. % of a hydroxy-functional, fatty acid-modified polyester withC) 0.1 to 20 wt. % of a diisocyanate having a molecular weight of 140 to 318,to form urethane groups and then dissolving or dispersing the reaction product in water with prior or simultaneous neutralization of at least a portion of the carboxyl groups present, wherein the sum of the percentages of A) to C) add up to 100.

Abstract: A halogen-free acrylic urethane sheet material 10 is disclosed which can be marked by conventional printing methods and by radiation methods. The halogen-free acrylic urethane sheet material of the invention is manufactured from a polymer comprising components A, B and C whereincomponent A comprises a copolymer of(i) a monoester of acrylic or methacrylic acid and an aliphatic diol having 2 to 8 carbon atoms and(ii) an ester of acrylic or methacrylic acid and an aliphatic alcohol having 1 to 8 carbon atoms, and optionally a vinyl aromatic monomer as well as N-vinylpyrrolidone or N-vinylcaprolactame,said component A having a T.sub.g of 30.degree. C. to 100.degree. C.,component B comprising an aliphatic polyester diol with a molecular weight less than 20,000 andcomponent C comprising a polyfunctional isocyanate or blocked polyfunctional isocyanate.

Abstract: A thermosetting, organic solvent-based, primer coating composition for protecting metal surfaces which includes a solvent solution of: (a) a hydroxy-functional polyester resin; (b) a thermosetting acrylic resin; (c) a hydroxy-terminal polybutadiene resin, a hydroxy-terminal epoxidized polybutadiene resin, or mixtures thereof; (d) a blocked isocyanate crosslinker including at least one dimethyl pyrazole blocked isocyanate; (e) an aminoplast crosslinker including at least one melamine-formaldehyde condensate; (f) a catalyst; and, (g) a pigment. The primer exhibits excellent flexibility after curing to allow the primer to be coil coated onto metals as a thicker film and to have the metal subsequently formed without film fracture or loss of adhesion.

Abstract: Aqueous coating composition based on polyols with ammonium groups and polyisocyanates, which coating composition may contain pigments and/or extenders, customary lacquer additives and one or more organic solvents, and containsA) as binder at least one (meth)acrylic copolymer with a hydroxyl value of 20 to 150 mg KOH/g and with an amine value of 10 to 150 mg KOH/g, both values being related to solid resin, wherein 2 to 50 wt.% of the solid binder resin may be replaced with one or more other binders, wherein the (meth)acrylic copolymer is neutralised with an acid containing at least one isocyanate-reactive group; andB) as crosslinking agent at least one polyisocyanate, which may be blocked,wherein components A) and B) are present in quantities such that the ratio of the sum of isocyanate-reactive groups in the binder component A) to the blocked and unblocked isocyanates in component B) is 1:0.5 to 1:3. The coating composition is in particular suitable for use in the production of coatings on plastic substrates.

Abstract: Monofunctional or multifunctional isothiocyanates having the general formulaR--(N.dbd.C.dbd.S).sub.xwhere R is any organic remainder; x.gtoreq.1, or compounds which form such isothiocyanates under the influence of temperature are used in elastomeric compounds to be vulcanized as inhibitors for amines.

Abstract: Anti-yellowing additives, based on N-amino alkyl carbamates, for use with thermocurable coating compositions containing polyisocyanate crosslinkers capped with ketoxime.

Abstract: The present invention provides:(1) a self-crosslinking resin (I) having a blocked isocyanate group and a hydroxyl group in the molecule and characterized in that the resin is prepared from a vinyl polymer (A) having at least two free isocyanate groups in the molecule and an acrylic resin (B) having at least two hydroxyl groups in the molecule by reacting some of the hydroxyl groups of the resin (B) with some of the free isocyanate groups of the polymer (A), and subsequently reacting a blocking agent with all the remaining free isocyanate groups, and(2) a self-crosslinking resin (II) having a blocked isocyanate group and a hydroxyl group in the molecule and characterized in that the resin is prepared from a vinyl polymer (C) having a free isocyanate group and a blocked isocyanate group in the molecule and the acrylic resin (B) having at least two hydroxyl groups in the molecule by reacting some of the hydroxyl groups of the resin (B) with all the free isocyanate groups of the polymer (C).

Abstract: A thermosetting composition which comprises:(D) a self-crosslinking compound having in the molecule (a) one or more functional groups of the formula (2): ##STR1## wherein R.sup.5, R.sup.6 and R.sup.7 are each hydrogen or an organic group of 1 to 18 carbons, R.sup.8 is an organic group of 1 to 18 carbons, Y.sup.2 is oxygen or sulfur, or R.sup.7 and R.sup.8 are bonded with each other to form a heterocyclic structure which comprises Y.sup.2 as the heteroatom component; and (b) one or more reactive functional groups which can form a chemical bond with carboxyl functional groups which are regenerated from (a) by heating; (C) optionally, a thermal latent acid catalyst which is activated during curing of the composition by heating; (A) optionally, a compound having in the molecule two or more functional groups of the formula (1): ##STR2## wherein R.sup.1, R.sup.2 and R.sup.3 are each hydrogen or an organic group of 1 to 18 carbons, R.sup.4 is an organic group of 1 to 18 carbons, Y.sup.1 is oxygen or sulfur, or R.

Abstract: An impact-resistant composition is disclosed, comprising(A) a modified polyisocyanate in which the active isocyanate groups have been blocked, obtained from a polycaprolactone-modified diol and an isocyanate compound, and(B) a hydroxyl group-containing resin containing two or more hydroxyl groups per molecule. The composition is useful as a coating composition for forming a chipping-resistant coated film.

Abstract: Resins based on a copolymerizate reacted with by a polyisocyanate, partially and transitorily blocked in the form of urea by an amino derivative, in which i) the polymerizate is based on styrene, at least two acrylic monomers of formula (I), H.sub.2 C.dbd.C(R)--COOR.sub.1, where R.dbd.hydrogen or methyl, R.sub.1 .dbd.hydrogen, linear or branched C.sub.1 -C.sub.14 alkyl radical, C.sub.1 -C.sub.4 hydroxyalkyl radical, and amongst which at least one of these acrylic monomers possesses a hydroxyl group, and at least one vinyl ester of a C.sub.9 -C.sub.19 trialkylacetic acid, ii) the polyisocyanate is chosen from the group of aliphatic polyisocyanates of formula (II) O.dbd.C.dbd.N--A--N.dbd.C.dbd.O where A represents a linear or branched C.sub.4 -C.sub.10 alkylene group and cyclic aromatic or cyclic aliphatic polyisocyanates and iii) this polyisocyanate is partially and transitorily blocked in the form of urea by a pyrazole group of formula (III) ##STR1## where R.sub.2, R.sub.3 and R.sub.4 .dbd.H or C.sub.1 -C.

Abstract: Aqueous synthetic resin dispersions comprising A) an ionic resin, preferably a cationic resin, B) a blocked polyisocyanate and C) a polymer of at least one ethylenically unsaturated monomer which can be polymerized by free-radical polymerization. These synthetic resin dispersions are used as binders in electrodeposition coating baths.

Abstract: The present invention concerns blocked isocyanate crosslinkers based on pentaerythritol for use in thermosetting coatings. More particularly, the invention pertains to thermosetting protective coatings containing a coreactive binder polymer comprising a hydroxyl functional matrix polymer adapted to coreact with a blocked isocyanate comprising pentaerythritol reacted with excess equivalents of isocyanate where excess isocyanate groups are blocked with a blocking agent. Pentaerythritol comprises between about 20% and 100% by weight of the polyol reactants reacted with excess isocyanate groups while the blocked crosslinker comprises between about 10% and 50% by weight of the thermosetting binder components. The preferred thermosetting coating is powder coating.

Abstract: An aqueous coating composition comprising a polyisocyanate compound and a fluorine-containing copolymer having hydroxyl groups, wherein the fluorine-containing copolymer having hydroxyl groups is a copolymer comprising 20-80 mol % of polymer units derived from a fluoroolefin and 0.1-25 mol % of polymer units derived from a monomer having a hydrophilic site, said polyisocyante compound and said fluorine-containing copolymer both being dispersed in water.

Abstract: A thermosetting powder coating composition resistant to overspray incompatibility defects that comprises solid particulates of a uniform mixture of (a) a polyester resin having an average of two or more carboxyl groups, (b) a first crosslinker that is reactive toward the carboxyl groups of the polyester resin, (c) from 1% to 20% of a reactive acrylic copolymer having a weight average molecular weight of from 10,000 to 40,000, and (d) a second crosslinker that is reactive toward the reactive functionality of the acrylic copolymer is described.

Abstract: The present invention relates to heat curable coating compositions containing a binder consisting essentially ofA) prepolymers which have butanone oxime-blocked isocyanate groups and are prepared fromA1) (cyclo)aliphatic polyisocyanates andA2) an organic polyhydroxyl component in whichA2.1 ) 50 to 90% of the hydroxyl equivalents of component A2) are from polyester polyols,A2.2) 10 to 50% of the hydroxyl equivalents of component A2) are from polyacrylate polyols and/or alkoxylation products of bisphenol A andA2.3) 0 to 30 of the hydroxyl equivalents of component A2) are from other organic polyhydroxyl compounds, andB) cycloaliphatic polyamines having at least two primary amino groups,wherein components A) and B) are present in an equivalent ratio of blocked isocyanate groups to amino groups of 1:0.8 to 1:1.2.The invention also relates to the use of these coating compositions for producing decorative, flying-stone-resistant, thick topcoats on metallic substrates.

Abstract: The present invention provides the improvement of coating workability (e.g. pinhole resistance, sagging resistance, etc.) of an aqueous coating composition. That is, the present invention provides an aqueous coating composition which comprises: (A) an acrylic resin and/or a polyester resin having an acid value of 10 to 100, a hydroxyl value of 20 to 300 and a number average-molecular weight of 1,000 to 50,000; (B) a polycarbonate resin having a number average-molecular weight of 1,000 to 10,000 which contains a hydroxyl group at the terminal end; and (C) a curing agent.

Abstract: The subject invention relates to a process for preparing a compatibilized blend of a first polymer which is a rubber containing free nitrile groups, hydroxyl groups, carboxyl groups, amide groups, amine groups or mercapto groups and a second dissimilar polymer which is a thermoplastic polymer containing nitrile groups, hydroxyl groups, carboxyl groups, amide groups, amine groups or mercapto groups, which comprises reacting a rubber having pendant blocked isocyanate groups bound thereto with the first polymer and the second dissimilar polymer, wherein the compatibilized blend contains from about 55 weight percent to about 75 weight percent of the rubber containing nitrile groups, hydroxyl groups, amide groups, amine groups or mercapto groups.

Abstract: Blocked (cyclo)aliphatic polyisocyanates wherein 30 to 70 equivalent-% of the isocyanate groups are blocked with butanone oxime, 30 to 70 equivalent-% of the isocyanate groups are blocked with 1,2,4-triazole and 0 to 30 equivalent-% of the isocyanate groups are blocked with other blocking agents; a method for their preparation by blocking lacquer polyisocyanates with these blocking agents, optionally with the prior, simultaneous or subsequent modification of the polyisocyanates with hydrazine derivatives containing one or more isocyanate-reactive groups; and the use of the blocked polyisocyanates as cross-linking agents for organic polyhydroxy compounds in one-component polyurethane stoving compositions.

Abstract: The present invention relates to process for preparing a coated substrate having improved resistance to yellowing which comprises coating a substrate with a one-component coating composition containinga) a blocked polyisocyanate which is the reaction product of a polyisocyanate with an oxime or lactam blocking agent for isocyanate groups andb) a compound containing at least two isocyanate-reactive groups,provided that component a) and/or component b) contains the group, --CO--(R)N--N(R)--CO--, wherein R represents hydrogen or an optionally substituted hydrocarbon radical, in an amount of 0.01 to 5% by weight, based on the solids content of components a) and b),by applying the one-component coating composition wet-on-wet to a coating composition containing acid groups and/or melamine resins which has previously been applied to the substrate or by adding a melamine resin to the one-component coating composition prior to applying it to the substrate, which may optionally have been precoated.

Abstract: The present invention relates to a powder coating composition having a glass transition temperature of 20.degree. to 80.degree. C. and containing(A) 56 to 86.9% by weight of a polyacrylate polyol component having a hydroxyl number of 30 to 155 and a glass transition temperature of 30.degree. to 120.degree. C.,(B) 0.1 to 9% by weight of a polyester polyol component having a hydroxyl number of 40 to 180 and a glass transition temperature of -40.degree. to 80.degree. C.,(C) 13 to 35% by weight of a polyisocyanate component having a glass transition temperature of -40.degree. to 60.degree. C.

Abstract: The present invention relates to a thermoset powder coating composition and method of application. The coating includes a copolymer having a reactive functionality selected from the group consisting of epoxy, carboxy, and hydroxy functionalities and mixtures thereof, a suitable crosslinking agent capable of reaction with the reactive functionality on the copolymer, and an aliphatic or aromatic crystalline, hydroxyl containing compound having a melting point of between 30.degree. C. and 150.degree. C. and a flow control agent. The powder coating is a pigmented or clear coat powder composition applied over a primer layer.