The Yokohama Rubber Co., Ltd.

Masaaki Obara

Yoshio Tajima

Yuichi Sugiyama

Kazuhiro Yamada

Tsuneo Koyama

Teruhide Furuhama

Hiroshi Kakiuchi

Yukiji Suzuki

The invention is concerned with a pressure-sensitive, electrically conductive composite sheet which enables a free selection of the pressure sensitivity, and which exhibits a large change in resistance upon compression. The sheet comprises an electrically conductive elastomer sheet obtained by blending an elastic high-molecular material with electrically conductive particles, and forming a dot pattern over at least one surface of the electrically conductive elastomer sheet, the dot pattern being composed of an electrically insulating material and having a form that satisfies the following requirements:

Pressure-sensitive electrically conductive composite sheet

Rubber compositions containing relatively large amounts of benzoic acid or monohydroxy benzoic acid providing vulcanized rubber products having improved adhesion to metallic or fibrous materials and an improved chipping and cutting resistance. This is a continuation of application Ser. No. 588,047, filed June 18, 1975, now abandoned.

Rubber compositions with benzoic acid compounds

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Hiratsuka, Japan

Masaaki Obara