Sanyo Chemical Industries, Ltd.

Takao Ando

Katsura Gohda

Hiroshi Itayama

Takayuki Tsuji

Yukio Shibata

Masahiro Matsuoka

Isao Ishikawa

Kozaburo Nagata

Eiji Ichihara

Toshiaki Okamoto

Toru Nakanishi

Hiroshi Nishimoto

Kohei Maeda

Masafumi Oishi

Kazuya Otani

Water-absorbent resin dispersion and polyurethane composition

Vibration-absorbing elastomeric composites, having improved vibration-damping properties with improved moldability and resin properties suitable for molded products, are obtained by reacting, insitu in a melted thermoplastic resin such as olefin-diene copolymer, a polyisocyanate with a polyol to form a polyurethane having a nitrogen atom content of at least 3% and having a solubility parameter which is higher by at least 2.5 than that of said thermoplastic resin.

Vibration-absorbing elastomeric composite, process for making the same,

Resin compositions of improved dispersibility and mechanical properties are obtained by polymerizing a polymerizable compound (A), insitu in a melted thermoplastic resin (B), in the presence of a dispersant (C) reactive or compatible with at least one of the resin (B) and polymerizate of (A).

Process for making resin composition and resin composition

A polymer composite comprises about 5 to 95 parts by weight of a copolymer (A) selected from the group consisting of olefin/diene copolymer and ethylene/(meth)acrylic acid ester copolymer, and 5 to 95 parts by weight of a polyurethane resin (B), wherein the polyurethane resin is one which is synthesized in the melted copolymer in the absence of a compatibilizer, a composition for molding comprising such polymer composite and electroconductive fillers and its molded article, and rubber contacts. The polymer composite possesses the flexibility and durability equivalent to those of silicone rubber, has excellent injection molding property, can be made by a short manufacturing process, and can be manufactured inexpensively. The polymer composite of the invention, when used together with an electroconductive filler, is effectively applied as rubber contacts, that is, flexible electric connection members of electric products.

Polymer composite and rubber contacts

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Kyoto, Japan

Takao Ando