Nippon Paint Compnay, Ltd.

Koichi Inoue

Yasuhiko Nakae

Hitoshi Nakatsuka

Hisaki Tanabe

Hirotoshi Umemoto

Ryozo Takagawa

Finely divided hydrophobic silica powder having a number average particle size from 3 to 10 nm and a BET surface area from 195 to 290 m.sup.2 /g is dry blended with particles of a thermosetting resin composition having a volumetric average particle size from 5 to 20 .mu.m in a proportion from 0.05 to 2.0 parts per 100 parts of the resin particles on weight basis. Sieving efficiency of the powder coating composition thus processed is remarkably improved.

Easily sievable powder coating composition

Disclosed is an acid-epoxy curing type powder coating composition which forms a coated film having excellent yellow resistance and appearance. The powder coating composition comprises:

Powder coating composition of epoxy-containing acrylic, polycarboxylic

A modified polyester resin composition for coating use comprising a polyester resin modified with 5 to 30% by weight of the total solid of a branched fatty acid having 8 and more carbon atoms and with 5 to 30% by weight of the total solid of a cyclic ester represented by the formula: ##STR1## wherein R represents an alkylene group having 4 to 10 carbon atoms, the resin having a hydroxyl value of 70 to 300. The present resin composition is specifically useful as resinous vehicle in a top coat composition for plastic and other substrates.

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Amagasaki, Japan

Koichi Inoue