Nippon Steel Corporation

Toray Industries, Inc.

Toagosei Chemical Industry, Co., Ltd.

Nagaharu Ueno

Joji Oka

Junichi Fujikawa

Tadashi Tanaka

Kiyokazu Mizutani

Hidejiro Asano

Takahisa Ogasawara

Akira Okamoto

Masao Takahashi

Shuji Fujioka

Yoshiitsu Tominaga

A precoated steel sheet and a process for production thereof is provided which comprises coating a resin composition comprising mainly an acryloxyloxy- or methacryloyloxy-terminated polyester on the surface of a steel sheet, said acryloyloxy- or methacryloyloxy-terminated polyester being prepared by reacting a hydroxy-terminated polyester comprising (a) a dicarboxylic acid unit containing about 10 to about 80 mol % of a terephthalic acid unit and (b) dihydric alcohol unit containing about 30 mol % or more of a dihydric alcohol unit containing 3 or more carbon atoms, and having a number average molecular weight of about 400 to about 5,000, with acrylic acid or methacrylic acid, and curing the thus-coated resin composition by irradiating the sheet with an electron beam.

Pre-coated steel sheets and process for production thereof

A radiation curable coating composition suitable for providing a cured coating of enhanced processability on metal substrates, comprising 100 parts of an acrylic copolymer having a number average molecular weight of 15,000 to 800,000 and predominantly comprised of polymerized units of at least one acrylic ester; 5 to 150 parts of at least one polyfunctional compound having a molecular weight of not greater than 2,000 and two or more radical-polymerizable double bonds in the molecule; and 0.2 to 15 parts of at least one non-polymerizable and nonvolatile organic compound having a molecular weight of not greater than 3,000.

Radiation curable coating composition and precoated metal having  top

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Yokohama, Japan

Nagaharu Ueno