Kansai Paint Company, Ltd.

Tadahiro Nakao

Toshihiro Hamamura

Chikara Kawamura

Masami Sugishima

Chicara Kawamura

Kazuhiko Kasei

Hiroyuki Tsukadaira

A cold setting coating composition comprises an urethane-modified vinyl resin (A) produced by reacting a reaction product with an isocyanate group-possessing compound (c). The reaction product is produced by reacting an epoxy group-containing vinyl copolymer (a) with a fatty acid component (b) containing an unsaturated fatty acid. The vinyl copolymer (a) is a copolymer of a first polymerizable unsaturated monomer containing an epoxy group and a second polymerizable unsaturated monomer. The composition also comprises a polymer dispersion (B) obtained by polymerizing two or more of vinyl monomers in the presence of a dispersion stabilizer (d) in an organic liquid in which vinyl monomers are soluble and a polymer formed from the monomers is insoluble. The dispersion stabilizer (d) is soluble in the organic liquid. The coating composition improved weathering resistance and water resistance of the resulting coated film.

Cold setting coating composition

An ordinary temperature curable coating composition comprises an oxidative curable silicon modified vinyl-based resin (A) which is obtained by combining an epoxy group-containing vinyl copolymer (a) with an unsaturated fatty acid-containing fatty acid component (b) and a silicon resin (c). The vinyl copolymer (a) is a copolymer of an epoxy group-containing polymerizable unsaturated first monomer and a polymerizable unsaturated second monomer copolymerizable with the first monomer. The silicon resin (c) contains a silicon atom and a hydroxyl group and/or an alkoxyl group which is bonded to the silicon atom. The coating composition can form a coating film superior in weathering resistance, coating film gloss, and coating operation properties such as storage property, initial drying property and brush stroke during double coatings with a brush.

Ordinary temperature curable coating composition

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Kanagawa, Japan

Tadahiro Nakao