Toyo Boseki Kabushiki Kaisha

Junji Sono

Yutaka Mizumura

Kanji Fujiyoshi

Minoru Fukuda

Iori Naito

A hydroxyl terminated copolyester which is basically constituted with ethylene glycol and terephthalic acid is formulated into a heat curable powder coating composition by mixing with specific plural silicone compounds. The resultant paint film is excellent in flatness and free from leveling faults and has superior properties.

Powder coating composition comprising a mixture of a polyester and

Powder coating composition

A powder coating composition comprising 1. an unsaturated polyester which is prepared by reacting A. terephthalic acid or its lower alkyl ester, and B. an .alpha.-olefinic dicarboxylic acid, and C. optionally an organic acid having at least three carboxy groups in the molecule or its functional derivative, and D. an aliphatic or alicyclic glycol; and 2. an organic peroxide and a molecular terminal cross linking or bridging agent, said powder coating composition being able to form a film having excellent properties, such as excellent gloss, hardness, impact strength, heat resistance, weatherability and corrosion resistance.

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Otsu, Japan

Junji Sono