Dainippon Ink and Chemicals, Incorporated

Akio Shoji

Noboru Ishikawa

Shunji Arimoto

Hidehisa Nakamura

Hirofumi Takeda

Shoichiro Takezawa

Hikaru Watanabe

Goro Iwamura

Hidetoshi Konno

Yoichi Murakami

Masahide Amemoto

Minoru Homma

Hajime Kumada

Toshiaki Morita

Michiya Sugiyama

Ikuo Nakaya

Kazuyoshi Maruyama

Masataka Ohoka

Mashide Amemoto

Mitsuko Yamada

Powder paint composition and application method therefor

A process for the production of a nonaqueous dispersion-type resin having excellent dispersion stability and a uniform particle size, which comprises uniformly polymerizing in an aliphatic and/or alicyclic hydrocarbon-type organic solvent a vinyl monomer having a solubility parameter different by 1.1 or more from that of said organic solvent, or a vinyl monomer mixture containing at least 1% by weight of said monomer and a reactive resin soluble in said hydrocarbon-type organic solvent and having a molecular weight of 2,000 or more, and then replacing the organic solvent in the obtained uniform polymer solution with another organic solvent that does not dissolve the nonaqueous dispersion-type resin to thereby conduct phase inversion into a non-aqueous dispersion.

Process for producing nonaqueous dispersion-type resin

A paint resin composition which does not appreciably attack an old coated film or a substrate to be coated, said composition consisting essentially of

Paint resin composition

A process for producing a grafted alkyd resin, which comprises graft-copolymerizing an alkyd resin with 0.01 to 5.0% by weight of at least one vinyl monomer selected from the group consisting of nitrogen-containing vinyl monomers and phosphorus-containing vinyl monomers.

Process for producing grafted alkyd resin

A resin composition for powder coating, said composition consisting essentially of

Resin composition for powder coating

A powder coating resin composition comprising (A) a phosphorus-containing vinyl polymer containing a curable functional group and having a softening point, determined by the ring and ball method, of 70.degree. to 150.degree. C. and a number average molecular weight of 1500 to 30000, and (B) a curing agent.

Powder coating resin composition

A resin composition for powder paints, said composition comprising (I) 70 to 97% by weight of a polyester resin containing free carboxyl groups in the molecule and having an acid value of 20 to 100 KOH mg/g and a softening point of 70.degree. to 150.degree. C and (II) 3 to 30% by weight of glycidyl p-glycidyloxybenzoate.

Resin composition for powder paint

A thermosetting resin composition for powder paints, which comprises I. 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, and Ii. an aliphatic saturated dibasic acid.

Thermosetting resin composition for powder paint comprising of a (I)

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 49.9 equivalent percent of a polycarboxylic acid not containing an ethylenically unsaturated bond and 50 to 65 equivalent percent of a polyhydric alcohol.

Growing community of inventors

Kishiwada, Japan

Akio Shoji