Abstract: The present invention provides a thermosetting organic solvent type coating capable of forming a cured coating film having a TUKON hardness at 20° C. of 15 or more and the minimum value of dynamic modulus E′ at a frequency of 110 Hz in the temperature range of 150-200° C., of 1×109 dyn/cm or more. The cured film formed from the coating, as compared with the cured films formed from conventional organic solvent type coatings used as a top coat for automobile (e.g. an organic solvent type coating containing, as main components, a hydroxyl group-containing acrylic resin and a melamine resin, or a carboxylic-epoxy type coating), is at least equivalent in weatherabiIity, finish appearance, acid resistance, etc. and superior in stain resistance.

Abstract: This invention provides a thermosetting high solids coating composition comprising: (A) a copolymer prepared by polymerizing monomer components comprising (a) 30 to 50 wt. % of vinyltrimethoxysilane and/or vinyltriethoxysilane, (b) 5 to 15 wt. % of N-methylol(meth)acrylamide alkyl ether and (c) 35 to 65 wt. % of another polymerizable unsaturated monomer, (B) a hydroxyl-containing resin having a hydroxyl value of 10 to 200 mg KOH/g, and (C) a curing catalyst. This invention further provides a method for forming a topcoat using said composition. The composition of the invention achieves the following remarkable effects: it forms a coating film excellent in acid resistance and scratch resistance, and it is superior in storage stability and recoat adhesion.

Abstract: The present invention provides a thermosetting organic solvent type coating capable of forming a cured coating film having a TUKON hardness at 20° C. of 15 or more and the minimum value of dynamic modulus E′ at a frequency of 110 Hz in the temperature range of 150-200° C., of 1×109 dyn/cm2 or more. The cured film formed from the coating, as compared with the cured films formed from conventional organic solvent type coatings used as a top coat for automobile (e.g. an organic solvent type coating containing, as main components, a hydroxyl group-containing acrylic resin and a melamine resin, or a carboxylic-epoxy type coating), is at least equivalent in weatherability, finish appearance, acid resistance, etc. and superior in stain resistance.

Abstract: The present invention provides a thermosetting high solids coating composition comprising (A) a carboxyl-containing compound, (B) a polyepoxide, and (C) a copolymer prepared by polymerizing monomer components comprising (a) 30 to 50% by weight of vinyltrimethoxysilane and/or vinyltriethoxysilane, (b) 5 to 15% by weight of N-methylol(meth)acrylamide alkyl ether, and (c) 35 to 65% by weight of another polymerizable unsaturated monomer, and a method for forming a topcoat using said composition. The composition of the present invention is highly effective in forming a coating film excellent in resistance to both acids and scratch, and is superior in storage stability and recoat adhesion.

Abstract: There is disclosed a novel organic solvent type coating composition capable of making the solid content concentration at the time of coating to higher than 70% by weight, without lowering the properties, which urethane type coating materials have, such as acid resistance, scratch resistance, finishing appearance etc. The composition comprises (A) a vinyl type polymer having both hydroxyl groups and alkoxysilyl groups in the molecule and having a number-average molecular weight in a range of 2,000 to 10,000; (B) a polyol compound having a number-average molecular weight of less than 1,000 and having a hydroxyl value in a range of 120 to 1,000 mgKOH/g; (C) a polyisocyanate compound having a number-average molecular weight of less than 2,000; and (D) a silanol group forming catalyst.

Abstract: An organic solvent-based heat-curable high solid coating composition comprising:(A) a carboxyl-containing compound having an acid value of 50 to 500 mg KOH/g wherein 20 mol % or more of the carboxyl groups are silylated carboxyl groups,(B) at least one epoxide selected from (B-1) an epoxy-, hydroxyl- and hydrolyzable alkoxysilyl-containing vinyl polymer, (B-2) the vinyl polymer (B-1) wherein 20 mol % or more of the hydroxyl groups are silylated hydroxyl groups, and (B-3) an epoxy compound having a number average molecular weight less than 1,000, and(C) a crosslinked particulate polymer,the composition having a solid content of 65 wt. % or more; and a method for forming a topcoat using the composition. The composition of the invention has a sufficiently high solid content, is capable of forming a coating film with high resistance to acids and the like, and is excellent in low-temperature curability, storage stability and recoat adhesion.

Abstract: The present invention provides a thermosetting organic solvent type coating capable of forming a cured coating film having a TUKON hardness at 20.degree. C. of 15 or more and the minimum value of dynamic modulus E' at a frequency of 110 Hz in the temperature range of 150-200.degree. C., of 1.times.1O.sup.9 dyn/cm.sup.2 or more. The cured film formed from the coating, as compared with the cured films formed from conventional organic solvent type coatings used as a top coat for automobile (e.g. an organic solvent type coating containing, as main components, a hydroxyl group-containing acrylic resin and a melamine resin, or a carboxylic-epoxy type coating), is at least equivalent in weatherability, finish appearance, acid resistance, etc. and superior in stain resistance.

Abstract: The invention provides a thermosetting powder coating composition comprising (A) a vinyl copolymer having a number average molecular weight of 1,500 to 6,000, a molecular weight distribution of 1.0 to 1.5 as represented by a weight average molecular weight/a number average molecular weight and a glass transition temperature of 40 to 100.degree. C., the copolymer containing at least one species of functional group selected from the class consisting of epoxy group, carboxyl group and hydroxyl group, and (B) a curing agent. The thermosetting powder coating composition of the invention is superior in any of the finished appearance of coating film and the blocking resistance.

Abstract: The invention provides a curable coating composition comprising:(a) a vinyl polymer having, in one molecule, (i) a group formed by half esterification of an acid anhydride group and (ii) a primary hydroxyl group,(b) a vinyl polymer having an epoxy group and a primary hydroxyl group in one molecule, and(c) a vinyl polymer having an ethoxysilyl group and a secondary hydroxyl group in one molecule, and a method of forming a top coat using said composition.

Abstract: The present invention provides a method for forming a multi-layer coating film by applying a colored clear coating (B) containing a color pigment and/or a glittering material, on the film of a leafing type aluminum flake-containing metallic coating (A), wherein the colored clear coating (B) also contains a polymer formed from an unsaturated monomer having a phosphoric acid group represented by --O--PO(OH)(R.sub.1) (wherein R.sub.1 is a hydroxyl group, a phenyl group or a C.sub.1-20 alkyl group) and a hydroxyl group-containing unsaturated monomer.The method can form a multi-layer coating film improved in interlayer adhesivity between the metallic coating film and the colored clear coating film, without reducing the excellent effects and metallic feeling provided by a metallic coating film containing leafing type aluminum flake.

Abstract: The present invention provides a method for forming a multi-layer coating film by applying a clear coating (B) on the film of a leafing type aluminum flake-containing metallic coating (A), which method comprises forming a film of the metallic coating (A), curing the film, applying thereon a composition (C) containing a polymer formed from an unsaturated monomer having a phosphoric acid group represented by --O--PO(OH)(R.sub.1) (wherein R.sub.1 is a hydroxyl group, a phenyl group or a C.sub.1-20 alkyl group) and a hydroxyl group-containing unsaturated monomer, and then applying the clear coating (B) on the film of the composition (C).The method can form a multi-layer coating film improved in interlayer adhesivity between the metallic coating film and the clear coating film, without reducing the excellent effects and metallic feeling provided by a metallic coating film containing leafing type aluminum flake.

Abstract: The present invention provides a coating method which comprises applying, onto a material to be coated, a cationic electrodepositable coating composition comprising (A) a polyurethane-modified epoxy resin-amine adduct obtained by a reaction of (A-1) a polyurethane-compound having one terminal isocyanate group in the molecule, obtained by a reaction of (a) a polyhydroxy compound having a number-average molecular weight of 50-8,000, (b) a polyisocyanate compound, and (c) a compound having one active hydrogen atom in the molecule; (A-2) a bisphenol type epoxy resin having at least two epoxy groups in the molecule; and (A-3) an active-hydrogen-containing amine compound, and (B) a nonionic film-forming resin, the weight ratio of the resin (A)/the resin (B) being 15/85 to 95/5 and the coating composition comprising substantially no pigment, then heat-curing the formed electrocoating film; and thereafter applying, onto the cured electrocoating film, an aqueous coating composition comprising a metallic pigment and/or

Abstract: An object of the present invention is to provide a heat-curable high solid coating composition capable of forming a coating film which is excellent in both acid resistance and scratch resistance, and a method for forming a topcoat using said composition.The present invention provides a heat-curable high solid coating composition comprising:(A) a carboxyl-containing compound,(B) a vinyl polymer having an epoxy group, a hydroxyl group and a hydrolyzable alkoxysilyl group in one molecule,(C) a reactive organopolysiloxane, and(D) a crosslinked particulate polymer. The present invention also provides a method for forming a topcoat using said composition.

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 curable resin composition, which is not thickened nor gels during storage, can be high solids, cures even at low temperatures and is excellent in electrostatic coating properties, and which contains as main components, a polymer having in one molecule epoxy group(s), and functional group(s) in each of which a carbonate ester group (--O--CO--O--) is directly bound to an aromatic ring; or a mixture of a compound having in one molecule at least two epoxy groups and a compound having in one molecule at least two functional groups in each of which a carbonate ester group (--O--CO--O--) is directly bound to an aromatic ring, and a curing reaction catalyst.

Abstract: A coating composition which consists essentially of:(A) a copolymer comprising 5 to 40 wt. % of an alkoxysilane-containing vinyl monomer which is a compound represented by the formula ##STR1## wherein A is ##STR2## R.sub.1 is a hydrogen atom or methyl group, R.sub.2 is a bivalent aliphatic saturated hydrocarbon group having 1 to 6 carbon atoms, R.sub.3 and R.sub.4 are the same or different and are each a phenyl group, alkyl group having 1 to 6 carbon atoms or alkoxy group having 1 to 10 carbon atoms, R.sub.5 is an alkyl group having 1 to 10 carbon atoms, m is 0 or 1, and n is an integer of 1 to 100, 5 to 50 wt. % of a hydroxyl-containing vinyl monomer and 30 to 70 wt. % of a fluorine-containing vinyl monomer, and (B) an amino resin in an amount of 5 to 50 wt. % based on the total amount of solids in the copolymer (A) and the amino resin (B).

Abstract: A self-crosslinking resin comprising a resin containing a blocked isocyanate group, and a resin containing a hydroxyl group, and a tertiary amino group and/or a quaternary ammonium group and attached to the resin by a urethane bond.The self-crosslinking resins are useful for adhesive compositions and coating compositions of the aqueous type.

Abstract: (1) A coating resin composition consisting essentially of a self-crosslinking resin (I) having at least one hydroxyl group and at least one blocked isocyanate group in the molecule wherein the resin (I) is prepared by reacting some of the free isocyanate groups of a vinyl polymer (A) having at least two free isocyanate groups in the molecule with some of the hydroxyl groups of a polyolefin resin (B) having at least two hydroxyl groups in the molecule, and subsequently reacting a blocking agent with the remaining free isocyanate groups, and (2) a coating resin composition consisting essentially of a self-crosslinking resin (II) having at least one hydroxyl group and at least one blocked isocyanate group in the molecule wherein the resin (II) is prepared by reacting all free isocyanate groups of a vinyl polymer (C) having at least one free isocyanate group and at least one blocked isocyanate group in the molecule with some of the hydroxyl groups of a polyolefin resin (B) having at least two hydroxyl groups in t

Abstract: The invention provides an automotive top coating composition, comprising as the main components;: (A) an acrylic polymer prepared by copolymerizing 5 to 40% by weight of an alkoxysilane-containing vinyl monomer which is a compound represented by the formula ##STR1## wherein A is ##STR2## R.sub.1 is a hydrogen atom or a methyl group, R.sub.2 is a bivalent aliphatic saturated hydrocarbon group having 1 to 6 carbon atoms, R.sub.3 and R.sub.4 are the same or different and are each a phenyl group, an alkyl group having 1 to 6 carbon atoms or an alkoxy group having 1 to 10 carbon atoms, R.sub.4 is an alkyl group having 1 to 10 carbon atoms, and n is an integer of 1 to 100, 5 to 50% by weight of a hydroxyl-containing vinyl monomer and 10 to 90% by weight of a vinyl monomer which is copolymerizable with the above vinyl monomers, and (B) an amino resin in an amount of 5 to 50% by weight based on the total amount of resin solids in the coating composition.

Abstract: Disclosed is a coating composition including: (a) an acrylic polymer prepared by copolymerizing about 2.5 to about 30% by weight of an alkoxysilane-containing vinyl monomer which is represented by the formula ##STR1## wherein A is ##STR2## R.sub.1 is a hydrogen atom or a methyl group, R.sub.2 is a bivalent aliphatic saturated hydrocarbon group having 1 to 6 carbon atoms, R.sub.3 and R.sub.4 are the same or different and are each a phenyl group, an alkyl group having 1 to 6 carbon atoms or an alkoxy group having 1 to 10 carbon atoms, R.sub.5 is an alkyl group having 1 to 10 carbon atoms, and n is an integer of 1 to 100, about 5 to about 50% by weight of an acetoacetoxy-containing vinyl monomer and about 20 to about 92.5% by weight of a vinyl monomer which is copolymerizable with the above vinyl monomers, and (b) an amino resin in an amount of about 5 to about 50% by weight based on the total amount of resin solids in the coating composition.