Zeon Corporation

Toshio Ohkawa

Koichi Nishimura

Shigeru Fujita

Hideo Fukuda

A rubber composition comprising a combination of a nitrile rubber and an epilhalohydrin rubber is cross-linked to give a crosslinked product, by using at least two kinds of crosslinking agents selected from a sulfur-containing crosslinking agent, a mercaptotriazine crosslinking agent and a 2,3-dimercaptoquinoxaline crosslinking agent.

Crosslinkable rubber composition

A rubber composition for a hose, which comprises a nitrile rubber (A) comprising 45-55 weight % of &agr;,&bgr;-ethylenically unsaturated nitrile monomer units and 55-45% by weight of conjugated diene monomer units, an epihalohydrin rubber (B), and a crosslinking agent (C ) for the nitrile rubber and/or a crosslinking agent (C ) for the epihalohydrin rubber; the amount of nitrile rubber (A) being 25-80 weight % based on the sum of nitrile rubber (A) and epihalohydrin rubber (B); and a hose having a layer comprised of a crosslinked product of the rubber composition. The hose has excellent resistance to fuel oil permeation and cold resistance, and therefore, it is especially suitable as fuel oil hoses of an automobile.

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Kawasaki, Japan

Toshio Ohkawa