Nissan Motor Company Limited

Shinto Paint Co., Ltd.

Kiyoshi Taki

Shigenori Kazama

Hitoshi Kimura

Takeshi Kuninori

Tsutomu Hattori

Akitoshi Shirasaka

Katsuo Iizuka

Hirofumi Masui

Satoru Nishigaki

Yukihiro Manabe

Kaoru Morosawa

Shinichi Hashimoto

Iwao Maruyama

Mitsuo Nishimura

Shigemasa Kaneda

A cationic electrodeposition paint composition suitable to be coated on a road wheel of an automotive vehicle. The paint composition is composed of an acrylic cationic resin (A), a urethanated epoxy cationic resin (B) a hardner resin (C) of a blocked isocyanate, and a cationic cross-linked resin particulate (D) having an average particle size ranging from 0.01.mu. to 1.mu.. In the paint composition the acrylic cationic resin (A), the urethanated epoxy system cationic resin (B), the blocked isocyanate hardner resin (C) and the cationic cross-linked resin particulate are respectively in amount of 20 to 70 parts by weight, 5 to 50 parts by weight, 10 to 40 parts by weight and 1 to 20 parts by weight relative to 100 parts by weight of a total solid content of the resins and particulate (A), (B), (C) and (D), thereby improving the corrosion resistance of the paint composition to the cut edge portion of the road wheel and the weatherability of coated paint film.

Acrylic, urethanated epoxy and particulate amine-epoxy/polybutadiene

A paint composition for cation electrodeposition painting, used for painting automotive vehicle body etc. The paint composition comprises basic unsaturated modified epoxy ester expressed by the general formula: ##STR1## where R.sub.1 and R.sub.2 are functional groups at least one of which is .alpha., .beta.-ethylenic double bond containing groups and the remainder is an unsaturated fatty acid chain; R.sub.3 is a group expressed by the formula: ##STR2## and X and Y are functional groups whose total number is n+1 in which not less than one functional group is a group containing both a tertiary amine function and a urethane function, and the remainder are hydroxyl groups (--OH), n being an integer ranging from 1 to 20. The paint composition further comprises basic unsaturated modified polydiene compound which is a reaction product of polydiene compound having a molecular weight ranging from 500 to 10,000 and unsaturated double bonds with iodine value ranging from 50 to 500, and containing oxirane oxygen ranging from 3 to 12% by weight, (2) a secondary amine, and .alpha., .beta.-ethylenic unsaturated carboxylic acid, thereby improving ability for covering the edge of a metal member to be painted.

Paint composition for cation electrodeposition painting

A powder coating composition is disclosed for producing a specific or special pattern finish on the surface of a substrate. The composition of the invention is obtained by kneading together a mixture containing principally a thermosetting polyester resin and a minor amount of a thermoplastic cellulose ester resin powder under such temperature conditions that the polyester resin is melted but the cellulose ester resin is not melted.

Powder coating composition

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Narashino, Japan

Kiyoshi Taki