Kansai Paint Company, Ltd.

Kansai Paing Co., Ltd.

Yugen Kawamoto

Takato Adachi

Nobushige Numa

Masaru Mitsuji

Ichiro Yoshihara

Yoshinori Kato

Kazuhiko Ohnishi

Toshio Ohkoshi

Hidefumi Takanashi

Motoshi Yabuta

Koji Yamada

Hiromi Harakawa

Mituo Wakimoto

Toshio Ogasawara

Akinari Niimi

Shinichi Ueda

A powder primer composition comprising as essential components (A) a carboxyl group-containing thermosetting polyester resin, (B1) a bisphenol A-type epoxy resin with an epoxy equivalent of 400-2000 g/eq or (B2) a bisphenol-type epoxy resin with an epoxy equivalent of 400-2000 g/eq and (C1) a bisphenol F-type epoxy resin with an epoxy equivalent of 400-2000 g/eq or (C2) a modified epoxy resin containing phenolic hydroxyl groups, obtained by reacting (a) a bifunctional epoxy resin with (b) an excess of a bifunctional phenol. Coating films obtained using the powder primer composition have excellent finished appearance and corrosion resistance.

Powder primer composition and method for forming coating film

Powder topcoating with epoxy resin, non-cyclic polyanhydride, and aliphatic non-cyclic anhydride or dibasic acid

Powder coating of epoxy resin, non-cyclic polyanhydride, and aliphatic non-cyclic anhydride or dibasic acid

Powder coating of epoxy resin and COOH- and ester-terminated anhydride

The present invention provide a method for color matching of a thermosetting powder coating composition, the method comprising the steps of: (1) dryblending two or more kinds of starting colored thermosetting powder coating compositions of different colors having an average particle size of 20 &mgr;m or less to achieve color matching, and (2) granulating the dryblend to a particle size in the range suitable for powder coating, by heating and agitating the dryblend, or by adding a specific solid binder, or by grinding and classifying a sheet or grains formed by compressing the dryblend. According to the present invention, color matching can be easily made, and a color-matched powder coating composition is obtained which is excellent in application characteristics, finished appearance and film properties.

Method for color matching of powder coating composition

This invention provides a method for color matching of a thermosetting powder coating composition, the method comprising the steps of: dryblending two or more kinds of starting colored thermosetting powder coating compositions of different colors having an average particle size of 10 &mgr;m or less to achieve color matching, and granulating the dryblend to a particle size in the range which is suitable for coating, by adding at least one binder selected from the group consisting of an aqueous solution of polyethylene glycol and an aqueous dispersion of paraffin wax; and a production process therefor. According to the present invention, color matching can be easily made, and a film of the obtained color-matched powder coating composition is excellent in finished appearance and outstanding in properties.

Method for color matching of powder coating composition and process for the preparation thereof

Aqueous coating and method for film formation using the same

Granulated powdery paint and process for producing the same

The present invention provides an aqueous coating comprising:

Thermosetting powder coating composition

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Hiratsuka, Japan

Yugen Kawamoto