The Yokohama Rubber Co., Ltd.

Naoto Torii

Akira Sato

Peng Gong

Kazuto Yamakawa

Hideyuki Oishi

A rubber laminate comprises a reinforcing layer and a second rubber layer laminated sequentially on a first rubber layer, at least one outer surface of the first rubber layer and the second rubber layer being covered with an ultra high molecular weight polyethylene layer, wherein the rubber layers covered with the ultra high molecular weight polyethylene layer are formed from a rubber composition comprising from 20 to 40 parts by mass of a softener per 100 parts by mass of a mixed rubber consisting of from 60 to 80% by mass ratio of a diene rubber and 20 to 40% by mass ratio of a ethylene-propylene-diene rubber and/or a butyl rubber.

Rubber laminate

Disclosed is a rubber composition excellent in oil resistance and weather resistance, while having excellent adhesion to a brass. Also disclosed is a vulcanized rubber product using such a rubber composition. Specifically disclosed is a rubber composition containing a rubber component (A), an inorganic filler (B), a plasticizer (C) and a process oil (D). The rubber component (A) contains 30-60% by mass of an acrylonitrile-butadiene rubber, 20-40% by mass of an ethylene-propylene-nonconjugated diene rubber, and 20-50% by mass of a styrene-butadiene rubber. The inorganic filler (B) is contained in the composition in an amount of 5-100 parts by mass per 100 parts by mass of the rubber component (A), and the mass ratio between the plasticizer (C) and the process oil (D) is from 15/85 to 75/25. Also specifically disclosed is a vulcanized rubber product obtained by vulcanizing such a rubber composition.

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Hiratsuka, Japan

Naoto Torii