Abstract: The present invention relates to a curable resin composition for use in water-based coating materials which includes as essential components an emulsion polymer (A) containing tertiary amino groups obtained by carrying out emulsion polymerization of a vinyl monomer containing a tertiary amino group with another copolymerizable vinyl monomer in a water-based medium, and a compound (B) containing, at least, an epoxy group and a hydrolyzable silyl group, with this composition preferably also including a water-based compound (C) obtained by adding a neutralizing agent to a vinyl polymer (I) containing acidic groups and/or tertiary amino groups so as to neutralize at least 10% of the acidic groups and/or the tertiary amino groups, and then dispersing or dissolving in water, and/or a compound (D), which is not included in compound (B), and contains hydrolyzable silyl group and/or a silanol group.

Abstract: PCT No. PCT/JP78/00013 Sec. 371 Date June 28, 1979 Sec. 102(e) Date June 19, 1979 PCT Filed Oct. 26, 1978 PCT Pub. No. W079/00240 PCT Pub. Date May 3, 1979It has previously been known that the poor pigment dispersibility of an acrylic paint is its defect. The present invention provides a modified acrylic copolymer having superior pigment dispersibility and being suitable as a vehicle for acrylic paints. The copolymer is obtained by polymerizing specified proportions of a polyester containing an unsaturated double bond, a dialkylaminoalkyl (meth)acrylate, methyl methacrylate and another polymerizable monomer, and has a weight average molecular weight/number average molecular weight ratio within the range of 3 to 20.

Abstract: A thermosetting resin composition for powder paints, which comprisesI. a polymer having a softening point, as measured by a ring-and-ball method, of 80.degree. to 150.degree. C. and a number average molecular weight of 3,000 to 15,000 and derived from (1) 10 to 40% by weight of .beta.-methylglycidyl (meth)acrylate or a mixture of it with glycidyl (meth)acrylate, (2) 20 to 80% by weight of styrene, (3) 3 to 40% by weight of a dialkyl ester of an aliphatic unsaturated dibasic acid and (4) 0 to 30% by weight of an alkyl (meth)acrylate, andIi. an aliphatic saturated dibasic acid.

Abstract: A powder coating resin composition comprising (A) 10 to 90% by weight of a glycidyl- or methyl glycidyl-containing copolymer and (B) 90 to 10% by weight of a polycarboxylic compound, said copolymer (A) being prepared by polymerizing (1) 5 to 40% by weight of at least one ethylenically unsaturated monomer selected from the group consisting of glycidyl-containing ethylenically unsaturated monomers and methyl glycidyl-containing ethylenically unsaturated monomers and (2) 20 to 90% by weight of at least one other ethylenically unsaturated monomer in the presence of (3) 5 to 40% by weight of a polyester resin containing an ethylenically unsaturated bond and having an acid number of not more than 10 KOH mg/g and a hydroxyl number of 20 to 300 KOH mg/g, said polyester resin being derived from 0.1-10 equivalent percent of an ethylenically unsaturated polycarboxylic acid, 30 to 49.