Dainichiseika Color & Chemicals Mfg. Co., Ltd.

Ukima Colour & Chemicals Mfg. Co., Ltd.

Ukima Coulor & Chemicals Mfg. Co., Ltd.

Setsuo Hirose

Kazuyuki Hanada

Katsumi Kuriyama

Eiichi Sugawara

Toshiaki Higuchi

Masatoshi Nakajima

Yoshinori Konno

Coating compositions are described. They contain, as a film-forming component, a fluoropolymer with a silane-coupling agent containing at least one free isocyanate group. The fluoropolymer may also have been modified with a reaction product of a polysiloxane or fluorine compound containing a reactive organic functional group with an organic polyisocyanate, which reaction product contains at least one free isocyanate group.

Coating compositions

Described is a coating composition for the formation of a back coat layer in a magnetic recording medium, which comprises carbon black, a binder and a solvent. The binder is composed of an acrylic-polymer-modified polyurethane resin and a vinyl chloride copolymer having at least one type of terminal groups selected from hydroxyl groups, carboxyl groups or tertiary amino groups.

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Yoshikawa, Japan

Setsuo Hirose