Abstract: A curable emulsion comprises: an oil phase comprising blocked polyisocyanate and curative; and an aqueous phase comprising at least partially neutralized crosslinked copolymer of monomers comprising at least one free-radically polymerizable carboxylic acid and at least one of an alkyl or alkaryl(meth)acrylate. In some embodiments, the curable emulsion further comprises nonionic surfactant. Methods of making the curable emulsions and their use in the manufacture of abrasive articles are also disclosed.

Abstract: The invention relates to particular mixtures of polyisocyanates which are blocked with 3,5-dimethylpyrazole, and to the use thereof as crosslinking component in single-component stoving lacquers, especially automotive clear lacquers.

Abstract: The present inventors provides polyol-containing resin compositions for coatings which can give cured coating films having high hardness and at the same time high solid compositions to meet the recent resources saving and/or environmental protection requirements, and curable coating compositions having high reactivity at curing, giving the coating film with good appearance and the coatings with prolonged pot life. The invention is directed to a resin composition for coatings comprising a polyol (A1) or (A2), a polyether polyol (B) and a solvent (C), wherein the polyol (A1) comprises a hydroxyl-containing polymerizable unsaturated monomer and a ring structure-containing polymerizable unsaturated monomer as essential components and the polyol (A2) comprises a hydroxyl-containing polymerizable unsaturated monomer and a linear branched structure-containing polymerizable unsaturated monomer as essential components.

Abstract: The present invention relates to an electrodepositable coating composition having a resinous phase dispersed in an aqueous medium. The resinous phase includes (a) an ungelled, active hydrogen-containing, ionic salt group-containing resin; and (b) a curing agent reactive with the active hydrogens of the resin (a). The resinous phase has a covalently bonded halogen content based on total weight of resin solids present in the resinous phase such that when the composition is electrodeposited and cured, the cured film passes flame resistance testing in accordance with IPC-TM-650, and has a dielectric constant of less than or equal to 3.50. The invention also is directed to a method for forming a dielectric coating on an electroconductive substrate using the electrodepositable coating composition, as well as to a substrate coated with the electrodepositable composition.

Abstract: The end-blocked isocyanate prepolymer having an oxadiazine ring according to the present invention is characterized in that at least one of isocyanate groups of a NCO-terminated isocyanate prepolymer, which has NCO groups at the ends and comprises units derived from an oxadiazinetrione compound (A) represented by the following formula (1) and units derived from an active hydrogen compound (B) represented by the following formula (2), is blocked with a unit derived from an end-blocking agent (C) having at least one active hydrogen in one molecule, and that the end-blocked isocyanate prepolymer has a softening point of not lower than 50° C.

Abstract: A blocked isocyanate group-containing resin composition and a thermosetting resin composition using the same that comprise a resin (C) obtainable by modifying a resin (A) having two or more blocked isocyanate groups of a specific molecular structure in one molecule with a specific monohydric alcohol (B), and by replacing the substituent of the blocked isocyanate groups with a group having a larger number of carbon atoms, thereby lowering solubility parameter value. The compositions exhbit good storage stability and good compatibility with base resins for paint.

Abstract: Thermoset paint compositions with which paint films can be formed which have excellent acid resistance, abrasion resistance and adhesion, and with which the water repelling properties and staining resistance can be retained for a longer period of time than with the conventional fluorine resin based paint films, are obtained. Constitution: Thermoset paint film compositions which contain (a) from 20 to 80% by weight of fluorine containing copolymer, comprising fluoro-olefin and vinyl based monomer, of which the solubility parameter value is from 9.0 to 10.5 and the hydroxy group value is within the range from 60 to 150 mgKOH/g; (b) from 20-80% by weight of vinyl based (co)polymer, comprising vinyl based monomer which contains at least 10% by weight of monomer which can be repesented by formula (1), of which the solubility parameter is from 9.0 to 10.

Abstract: Clearcoat coating composition for automotive exterior coatings with improved intercoat adhesion to a subsequently applied coating layer and improved flexibility contains (a) a first vinyl copolymer prepared from a monomer mixture including no more than about 35% by weight of nonfunctional monomers that has carbamate functionality and hydroxyl functionality, at least part of the hydroxyl functionality being on monomer units including an optionally branched alkyl group having at least about six carbon atoms; (b) a second vinyl copolymer having hydroxyl functionality, preferably primary hydroxyl functionality; and (c) a curing agent component that includes at least an aminoplast curing agent and optionally a polyisocyanate curing agent. The polyisocyanate curing agent is preferably blocked with a blocking agent that volatilizes during the cure reaction, regenerating a reactive isocyanate group.

Abstract: The invention relates to a coating material containing a binding agent and a cross-linking agent as well as a thixotropic agent based on ureas and/or ureas derivatives, whereby the coating material additionally contains a wetting agent that improves the wettability of the thixtropic agent.

Abstract: A film-forming composition that includes a stable aqueous dispersion of a mixture of a polyester polyol and a carboxylic acid-containing acrylic polymer polyol and a crosslinking agent having functional groups reactive with hydroxyl groups. The weight ratio of polyester polyol to acrylic polymer polyol is in the range of 10:90 to 30:70. The crosslinking agent is one or more blocked isocyanates or aminoplasts. The equivalent ratio of hydroxyl groups to reactive functional groups on the crosslinking agent is from 0.8:1 to 1.7:1. The film forming composition can be used in multi-layer composite coating compositions that include a base coat layer and a substantially pigment-free topcoat deposited over at least a portion of the base coat layer, the topcoat composition including the present film-forming composition.

Abstract: A weldable curable coating composition with improved intercoat adhesion is disclosed comprising a resinous binder comprising a polymer (A) with functional groups and a crosslinking agent with functional groups reactive with those of polymer (A); an electroconductive pigment; and an adhesion promoting compound comprising boron containing compounds. In an alternative embodiment, the adhesion promoting compound may comprise siloxane polymer reacted with aluminates, titanates, zirconates, silicates, siloxanes, silanes, and mixtures thereof, wherein each component is different.

Abstract: The invention provides an improved method of graft polymers comprising providing an emulsion comprising at least one or more first monomer (a), at least one or more second monomer (b), and at least one graft material (c). The emulsion is subjected to conditions such that it undergoes simultaneous free radical polymerization and grafting. One or more first monomer (a) is unsaturated and is free of any functional groups reactable with a functional group Fb of monomer (b) or a functional group Fc of graft material (c). Monomer (a) may optionally comprise a functional group Fa which is not reactive with either functional group Fb or Fc. Monomer (b) is unsaturated and comprises a functional group Fb reactive with functional group Fc. Graft material (c) comprises a compound free of unsaturation and comprising a functional group Fc reactive with functional group Fb, and a graft moiety.

Abstract: The present invention relates to a water-dispersible crosslinker composition containing

Abstract: A process for producing scratch-resistant coatings, especially scratch-resistant multicoat finishes, involving use of coating compositions which after curing have a storage modulus E′ in the rubber-elastic range of at least 107.5 Pa and a loss factor tan &dgr; at 20° C. of at least 0.05, the storage modulus E′ and the loss factor having been measured by dynamic mechanical thermoanalysis on free films having a film thickness of 40±10 &mgr;m, and comprise as binders one or more polyacrylate resins having a hydroxyl number of from 100 to 240, an acid number of from 0 to 35, and a number-average molecular weight of from 1500 to 10,000, and as crosslinkers one or more free or blocked isocyanates and/or triazine-based components which crosslink with the hydroxyl groups of the binder to form ether and/or ester structures.

Abstract: A water dispersion type water and oil repellent composition capable of imparting highly long-lasting water and oil repellency to fibers of various materials. It comprises a polymer which essentially contains polymerized units of a (meth)acrylate having a polyfluoroalkyl group and polymerized units of a polymerizable monomer which essentially contains a polymerizable unsaturated group and a hydroxyl group and in which the polymerizable unsaturated group and the hydroxyl group are connected to each other through 7 or more covalent bonds, a surfactant which contains a nonionic surfactant in an amount of from 60 to 100 wt %, an aqueous medium, and a cross-linkable compound.

Abstract: Self crosslinking polyurethane comprising lateral or terminal ethenylarylene groups, produced by reacting a polyurethane pre-polymer with an adduct, obtained by reacting an ethenylarylene mono-isocyanate with a compound containing hydroxyl groups or amino groups such that at least one group that is reactive to isocyanate remains in the adduct. Also, a self crosslinking graft copolymer containing at least one (meth)acrylate copolymer and at least one polyurethane produced by dispersing at least one self crosslinking olefinically unsaturated polyurethane comprising lateral or terminal ethenylarylene groups and blocked isocyanate groups in an aqueous medium and by radical copolymerization of a mixture of a monomer comprising at least one functional group that is reactive to isocyanate with a monomer that can be copolymerised with the mixture.

Abstract: Low molar mass polyester polyols having a weight average molar mass Mw of up to 3500 g/mol, hydroxyl numbers of from 80 to 280 mg/g and acid numbers of from 5 to 40 mg/g, comprising structural units derived from aliphatic monocyclic or polycyclic compounds containing at least two hydroxyl and/or epoxide groups and at least one heteroatom, aliphatic acyclic or cyclic polyhydroxy compounds containing three or more hydroxyl groups per molecule, linear or branched aliphatic dihydroxy compounds and aliphatic cyclic polycarboxylic acids, alone or in a mixture with low molar mass acrylate copolymers, may be processed to give coating materials which dry rapidly, and result in defect-free surfaces.

Abstract: The invention relates to methods for producing storage-stable, latent-reactive layers and powders of surface-deactivated, solid polyisocyanates and dispersions or aqueous solutions of isocyanate reactive polymers, which can be used as adhesives and coverings. Said dispersions, suspensions or aqueous solutions can applied to a substrate in an appropriate form. Water can then be eliminated at a temperature inferior to the reaction temperature of the isocyanates and this operation can take place at a temperature above the softening temperature of the polymers. This process produces, at ambient temperature, dry and substantially water free layers which are storage stable and can react with the polymers at the polyisocyanate reaction temperature.

Abstract: Aqueous solutions or dispersions of copolymers A) a process of making them and their use in binder compositions. Copolymers A) containing a hydroxy-functional, hydrophobic copolymer I) containing 30 to 85% by weight of (meth)acrylic acid esters having C1 to C18 hydrocarbon radicals in the alcohol portion, aromatic vinyl compounds and/or vinyl esters and 5 to 45% by weight of hydroxy-functional monomers; a hydroxy- and carboxy-functional, hydrophilic-hydrophobic copolymer II) containing 4 to 20% by weight of (meth)acrylic acid esters having C1 to C18 hydrocarbon radicals in the alcohol portion, aromatic vinyl compounds and/or vinyl esters, 4 to 15% by weight of hydroxy-functional monomers and 0.8 to 3.

Abstract: An aqueous coating material curable thermally and/or with actinic radiation, comprising A) at least one ionically and/or nonionically stabilized polyurethane which is saturated, unsaturated and/or grafted with olefinically unsaturated compounds and is based on bis(4-isocyanatocyclohexyl)methane with a trans/trans content of up to 30% by weight, based on the diisocyanate, as binder and B) at least one crosslinking agent.

Abstract: Thermosetting polymers and the electrical laminates made therefrom are disclosed. The polymer comprises the cross-linked product of: a) one or more ethylenically unsaturated aromatic monomers, optionally containing a halogenated monomer to impart fire retardation, and b) a vinyl-terminated polybutadiene or butadiene-styrene copolymer containing either a urethane or an ester group. It has been discovered that an unexpected combination of thermal, electrical, and mechanical properties are obtained from the composition recited herein. The composition is ideally suited as a matrix polymer for electrical substrate applications.

Abstract: The invention relates to novel aqueous coating agents for baking enamels, in particular for producing hard, elastic fillers with a high solid content, for coating car bodies.

Abstract: Microsuspension polymers are prepared by (1) dispersing a mixture of components A1 to A4, a1: from 0.1 to 60% by weight of at least one free-radically polymerizable monomer A1 containing at least one functional group which is reactive with isocyanate groups (isocyanate-reactive functional group), a2: from 40 to 99.9% by weight of at least one further free-radically polymerizable monomer A2 containing no isocyanate-reactive functional group, a3: from 0 to 20% by weight of 1,1-diphenylethene or 1,1-diphenylethane A3, a4: from 0.1 to 100% by weight of at least one blocked polyisocyanate A4, in water using a protective colloid to form a dispersion having an average particle diameter of from 0.08 to 100 &mgr;m, and (2) polymerizing the droplets using from 0.1 to 20% by weight of at least one free-radical polymerization initiator, up to a conversion of at least 50% by weight, the amounts being based on the total weight of components A1 and A2, which gives 100% by weight.

Abstract: Thermosetting polymers and the electrical laminates made therefrom are disclosed. The polymer comprises the cross-linked product of: a) one or more ethylenically unsaturated aromatic monomers, optionally containing a halogenated monomer to impart fire retardation, and b) a vinyl-terminated polybutadiene or butadiene-styrene copolymer containing either a urethane or an ester group. It has been discovered that an unexpected combination of thermal, electrical, and mechanical properties are obtained from the composition recited herein. The composition is ideally suited as a matrix polymer for electrical substrate applications.

Abstract: Thermosetting polymers and the electrical laminates made therefrom are disclosed. The polymer comprises the cross-linked product of: a) one or more ethylenically unsaturated aromatic monomers, optionally containing a halogenated monomer to impart fire retardation, and b) a vinyl-terminated polybutadiene or butadiene-styrene copolymer containing either a urethane or an ester group. It has been discovered that an unexpected combination of thermal, electrical, and mechanical properties are obtained from the composition recited herein. The composition is ideally suited as a matrix polymer for electrical substrate applications.

Abstract: A thermosetting composition that includes: (a) a crosslinking agent having at least two functional groups reactive with hydroxyl groups; and (b) a non-gelled, hydroxyl functional polymer prepared by atom transfer radical polymerization. The polymer contains at least one of the following polymer chain structures: —{(M)p—(G)q}x—  or —{(G)q—(M)p}x— wherein M is a residue, that is free of hydroxyl functionality, of at least one monomer; G is a residue, that has hydroxyl functionality, of at least one monomer; p and q represent average numbers of residues occurring in a block of residues in each polymer chain structure; and p, q, and x are each independently selected for each structure such that the hydroxyl functional polymer has a number average molecular weight of at least 250.

Abstract: A carboxy- and hydroxy-finctional acrylic polymer cross-linked with a polyisocyanate is used as primer for PVC-plastisol. It is particularly useful for steel substrates, more particularly in coil coating.

Abstract: Transparent or pigmented powder coating materials with crosslinkers comprising hydroxyalkylamides and blocked nonaromatic polyisocyanates.

Abstract: A refinish basecoat composition includes at least one pigment and an hydroxyl-functional acrylic polymer. The acrylic polymer has a number average molecular weight of at least about 6000 and is polymerized using at least about 45% by weight cycloaliphatic monomer, based on total monomer weight polymerized. A mixer system that can be used to prepare the refinish basecoat has a plurality of color components, each independently including at least one pigment dispersed by the hydroxyl-functional acrylic polymer, and a pigment-free component containing the hydroxyl-functional acrylic polymer.

Abstract: Transparent or pigmented powder coating materials with crosslinkers comprising hydroxyalkylamides and polyisocyanates containing uretdione groups.

Abstract: The present invention provides a novel (meth)acrylate ester-based resin composition which, for example, exhibits various good properties such as weather resistance, heat resistance, water resistance, acid resistance, alkali resistance, warm water resistance, impact resistance, processability, flexibility, hardness, elongation, transparency, luster, fleshy property, mirroring property, pigment dispersibility, and driability when being used, for example, as crosslinking type paints, adhesives, pressure sensitive adhesives, and fiber-processing materials, and has so low a resin viscosity as to be utilizable as a resin for coping with environmental pollution of such as low-VOC paints.

Abstract: A thermosetting composition comprising a co-reactable solid, particulate mixture of (a) capped polyisocyanate crosslinking agent, e.g., a trimer of 1-isocyanato-3,3,5 -trimethyl-5-isocyanatomethylcyclohexane capped with e-caprolactam or 1H-2,5-dimethyl pyrazole, and (b) hydroxy functional polymer, is described. The hydroxy functional polymer is prepared by atom transfer radical polymerization and has well defined polymer chain architecture and polydispersity index of less than 2.5. The thermosetting compositions of the present invention have utility as powder coatings compositions.

Abstract: The present invention relates to aqueous polyurethane dispersions wherein the polyurethanes contain terminal hydrazide groups and correspond to the formula wherein the terminal, modified hydrazide groups are present in an amount of 1 to 25% by weight [calculated as C(O)—NH—NH—C(O), MW 84], based on the weight of the polyurethanes, and wherein X represents OR′ or NHR′, R represents the residue obtained by removing the isocyanate groups from an NCO prepolymer, R′ represents a group which is inert to Isocyanate groups under the conditions used to form the polyurethane of in formula I, R″ represents a divalent, linear or branched aliphatic group containing 2 to 10 carbon atoms, provided that there are at least two carbons between the oxygen atoms, wherein the aliphatic group may optionally be substituted by heteroatoms to form ether or ester groups, m is 0 or 1 and n is 2 to 4.

Abstract: The present invention provides a solventless, continuous process, which includes: in at least one extruder, intensive compounder, intensive mixer or static mixer, mixing and heating a reaction mixture including the following (A), (B), and one or both of (C) and (D): (A) at least one aliphatic, (cyclo)aliphatic and/or cycloaliphatic C3-C50 diisocyanate compound; (B) at least one aliphatic, (cyclo)aliphatic and/or cycloaliphatic C3-C50 polyisocyanate compound containing one or more isocyanurate groups; (C) 1,2,4-triazole; (D) one or more pyrazole having the formula: where R1, R2 and R3 simultaneously or independently of one another are hydrogen or alkyl, alkenyl, aralkyl, aryl or N-substituted carbamoyl groups, halogen or —C(═O)—O—R4, where R4 is a C1-C12 alkyl group; to obtain a product mixture including at least one (semi)crystalline, blocked C3-C50 isocyanate compound and at least one amorphous, blocked C3-C50 isocyanate compound.

Abstract: Partially or totally blocked polyisocyanates comprising physical mixtures of individual a) urethane-functional and/or b) biuret-functional and/or c) isocyanurate-functional aliphatic and (cyclo)aliphatic and/or cycloaliphatic diisocyanate whose isocyanate groups are blocked in such a way that there is from 0.5 to 1 mol, preferably from 0.8 to 1 mol, of 1, 2, 4-triazole per isocyanate equivalent.

Abstract: Coating composition suitable for multilayer lacquering, containing, in addition to organic solvent, anti-sagging agents, optionally pigments, extenders and additives, a binder/crosslinkin agent system containing A) from 20 to 80 wt. % of carboxyl-functional (meth)acrylic copolymers and/or carboxyl-functional polyesters having an acid number of from 20 to 300, B) from 20 to 80 wt. % of epoxy-functional crosslinking agents, the percentages by weight of A) and B) adding up to 100 wt. %. C) from 0 to 30 wt. % of polymer polyol C), based on the sum of the weights of A) and B), E) from 0 to 20 wt. % of further crosslinking agents, based on the sum of the weights of A, B, and C), F) from 0 to 10 wt. % of monoepoxides, based on the sum of the weights of A) and B), and D) as anti-sagging agents, from 0.1 to 3 wt.

Abstract: Herein are disclosed a curable resin composition for overcoat of flexible circuit which comprises a hydrogenated polybutadiene polyol with a number-average molecular weight of 1,000-8,000 and having 2-10 hydroxyl groups per molecule (Polyol A), and a polybutadiene polyblock isocyanate (Isocyanate X), and other similar curable resin compositions, which can be an overcaoting agent which can give a coat film involving no such trouble that the coat film gets overhardened and the curling is increased.

Abstract: A curable acrylic polymer composition useful in coating, sealant or adhesive compositions comprises an acrylic polymer containing pendant functional groups selected from epoxide groups, isocyanate groups, alkoxysilane groups and activated —CH— groups bonded to at least two electron-withdrawing groups and a curing agent which is reactive with the functional groups of the acrylic polymer and is characterized in that the polymer is dissolved in an organic compound of viscosity less than 2 Pas (20 poise) at 25° C. containing at least one functional group of the same functionality as that present in the acrylic polymer. The composition can be prepared by the free radical polymerization of a functional olefinically unsaturated monomer, and optionally one or more ethylenically unsaturated comonomers, in the presence of the said functional organic compound as diluent.

Abstract: Clearcoat coating composition for automotive exterior coatings with improved intercoat adhesion to a subsequently applied coating layer and improved flexibility contains (a) a first vinyl copolymer prepared from a monomer mixture including no more than about 35% by weight of nonfunctional monomers that has carbamate functionality and hydroxyl functionality, at least part of the hydroxyl functionality being on monomer units including an optionally branched alkyl group having at least about six carbon atoms; (b) a second vinyl copolymer having hydroxyl functionality, preferably primary hydroxyl functionality; and (c) a curing agent component that includes at least an aminoplast curing agent and optionally a polyisocyanate curing agent. The polyisocyanate curing agent is preferably blocked with a blocking agent that volatilizes during the cure reaction, regenerating a reactive isocyanate group.

Abstract: The present invention relates to aqueous polyurethane dispersions wherein the polyurethanes contain terminal hydrazide groups and correspond to the formula 1

Abstract: The invention relates to new high-functional polyaddition compounds which contain free isocyanate groups with an average isocyanate functionality of 2.1 to 8.0, a concentration of uretdione of 10 to 18 wt. %, a concentration of urethane of 10 to 20 wt. % and a concentration of ester groups —CO—O and/or carbonate groups —O—CO—O of 1 to 17 wt. %, a process for the preparation thereof and their use as starting components for the preparation of polyurethane plastics, in particular as cross-linking agents for heat-curable powder coatings.

Abstract: A process for producing scratch-resistant coatings, especially scratch-resistant multicoat finishes, involving use of coating compositions which

Abstract: A process for producing scratch-resistant coatings, especially scratch-resistant multicoat finishes, involving use of coating compositions which, after curing, have a storage modulus E′ in the rubber-elastic range of at least 107.5 Pa and a loss factor tan&dgr; at 20° C. of at least 0.05, the storage modulus E′ and the loss factor having been measured by dynamic mechanical thermoanalysis on free films having a film thickness of 40±10 &mgr;m, and comprise as binders one or more polyacrylate resins having a hydroxyl number of from 100 to 240, an acid number of from 0 to 35, and a number-average molecular weight of from 1500 to 10,000, and as crosslinkers one or more free or blocked isocyanates and/or triazine-based components which crosslink with the hydroxyl groups of the binder to form ether and/or ester structures.

Abstract: The present invention provides a curable coating composition that includes a film-forming polymer, a polymeric additive having at least one bound surface protecting group, and a crosslinker that is reactive with the film-forming polymer. The polymeric additive is substantially free of groups reactive with the crosslinker and has comonomer units with aryl groups, alkyl groups having, on average, four or more carbon atoms, or combinations of the aryl and alkyl groups. When the coating composition is cured to form a cured coating layer, the concentration of the polymeric additive in the upper about 50% of the cured coating layer thickness is at least about 10% higher than the concentration of the polymeric additive in the rest of the cured coating layer.

Abstract: This invention provides a process for producing a polyurethane resin from a hydrogenated polydiene diol or polyol having a functional group equivalent weight of 750 to 10000, a reinforcing agent having a functional group equivalent weight of 30 to 200, and a polyisocyanate. In a preferred embodiment, the process comprises reacting at least one of a polydiene diol or a reinforcing diol or triol with the polyisocyanate at an NCO/functional group molar ratio of 0.4 to 0.7 or a functional group/NCO molar ratio of 0.25 to 0.55 to form a stable reaction product, adding to this reaction product an additional sufficient amount of the polyisocyanate and, as needed, one or both of the polydiene diol or the reinforcing agent to bring the NCO/functional group ratio up to from 0.9 to 1.1 and to achieve a polydiene diol content of 35 to 80%w (on solids basis) and a reinforcing agent content of 2 to 17%w (on solids basis), and reacting this final mixture to form a crosslinked polyurethane product.

Abstract: The invention relates to a binder composition containing A) 50-90 parts by wt. of OH-functional graft copolymer resins prepared from a) 0.1 to 10 parts by wt. of polybutadiene, b) 5 to 60 parts by wt. of an unsaturated aromatic monomer, c) 10 to 50 parts by wt. of a hydroxyalkyl ester of (meth)acrylic acid, d) 5 to 70 parts by wt. of a cycloaliphatic ester of (meth)acrylic acid, e) 5 to 50 parts by wt. of an aliphatic ester of (meth)acrylic acid, f) 0.1 to 5 parts by wt. of a mono-olifinically unsaturated mono- or dicarboxylic acid and/or maleic or fumaric acid half esters, B) 0.1 to 5 parts by wt. of a polyfunctional crosslinking agent.

Abstract: Herein is desclosed a curable resin composition comprising at least one polyol selected from the group consisting of Polyol A, including polybutadiene polyol (Polyol Aa), Polyol B, including polybutadiene polyol (Polyol Ba) and polyester polyol (Polyol Bb), and Polyol C, and at least one polyblock isocyanate selected form the group consisting of polyblock isocyanate (Isocyanate X), including polybutadiene polyblock isocyanate (Isocyanate Xa), which is excellent in warp property, i.e., provides a low shrinkage, upon curing, and the cured products of which are particularly excellent in flexibility and excellent in such properties chemical resistance, heat resistance, electric insulation, bending resistance and adherence, and which is, therefore, suitable for overcoat of flexible circuit.

Abstract: The present invention is directed to a coating composition particularly useful as a clear coating applied over a pigmented base coating, wherein the clear coating has improved resistance to marring and to acid etching when exposed to natural weathering conditions. The clear coating is particularly useful as an automotive OEM clear coating or as a refinish clear coating. The coating has two components. Component A of the coating composition includes a melamine and an acrylosilane polymer of a polymerized monomers mixture, which includes an alkyl methacrylate, an alkyl acrylate, cycloaliphatic alkyl methacrylate, cycloaliphatic alkyl acrylate, styrene or any mixture of these monomers; hydroxy alkyl methacrylate, hydroxy alkyl acrylate or any mixtures of these monomers; and a mono-ethylenically unsaturated silane monomer. Component B of the composition includes an organic polyisocyanate as a crosslinking agent.

Abstract: The present invention relates to an aqueous dispersion containing A) a polyol component containing A1) 20 to 60 wt. %, based on the resin solids content of polyol component A), of a polyester resin containing 10 to 60 wt. %, based on the weight of the polyester resin, of one or more aliphatic, saturated or unsaturated monocarboxylic acids having 8 to 30 carbon atoms, and 0.4 to 5 wt. % of one or more radically polymerizable &agr;,&bgr;-unsaturated mono- or di-carboxylic acids having 3 to 8 carbon atoms, or their anhydrides, and A2) 40 to 80 wt. %, based on the resin solids content of polyol component A), of a polyacrylate, which is prepared in the presence of component A1), and B) 1 to 70 wt. %, based on the resin solids content of the aqueous dispersion, of one or more blocked polyisocyanates.

Abstract: There is disclosed a coating composition comprising a binder component consisting of (A′) hydroxyl group-containing polyester resin having a number average molecular weight of 2,000-20,000, glass transition temperature of −40° C. to 30° C. and hydroxyl value of 5-95 mgKOH/g, (B) blocked polyisocyanate compound blocked with &egr;-caprolactam, and the equivalent ratio of the blocked isocyanate groups in said blocked polyisocyanate compound (B)/the hydroxyl groups in said polyester resin (A) being in the range of 0.7-1.2, and 0.5-30 parts by weight of said resin fine particles (C) with an average particle diameter of 8-70 &mgr;m, which do not completely melt at the time of coating film curing, per 100 parts by weight of said binder component. Said coating composition can form a coating film having excellent popping resistance. hardness, processibility, anti-tackiness, blocking resistance and curability by a high temperature short time baking.