Nippon Paint Compnay, Ltd.

Oki Electric Industry Co., Ltd.

Mitsui-cyanamid, Ltd.

Sumitomo Electric Industries, Limited

Kazutoshi Abe

Takashi Taguchi

Yasuo Saito

Hiroshi Ohtsuka

Masahiko Togo

Youichi Watanabe

Katsuo Miki

Kenji Shindo

Tsutomu Nishimura

Masatoshi Sakamaki

Phase shifting mask

Powder coating composition

There is disclosed a coating resin composition which contains as a crosslinking agent a melamine-formaldehyde resin which permits a paint to cure at low temperatures, permits a paint to form a coating film flexible enough for the fabrication of the coated substrate, gives off only a small amount of formaldehyde at the time of paint application, and makes it possible to increase the solids content in a paint. The melamine-formaldehyde resin is a mixed alkyl etherified methylol melamine resin, and the other composition-constituting component is an alkyd resin, polyester resin, or vinyl copolymer.

Coating resin composition with high number of imino groups

Disclosed is a method for recovering acrylic resin from an excess of a sprayed powder coating composition. An excess of the powder coating composition which is not deposited onto an article to be coated and is recovered in a coating apparatus is dissolved in an aromatic hydrocarbon solvent which dissolves the acrylic resin component and which has a solubility of a curing agent of not more than 1.0 g (curing agent)/100 g (solvent) at 20.degree. C. and the acrylic resin component is recovered from the resin solution. The acrylic resin component thus recovered can be reused as a resin component for coating compositions.

Method for recovering acrylic resin from excess of sprayed powder

Growing community of inventors

Tokyo, Japan

Kazutoshi Abe