Cis-1,4-polyisoprene rubber composition
AssigneeNippon Zeon Co., Ltd.
InventorsShizuo Kitahara, Toshihiro Fujii, Nagatoshi Sugi
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Abstract
A cis-1,4-polyisoprene rubber composition capable of giving a vulcanizate having improved strength, said composition comprising (1) a synthetic cis-1,4-polyisoprene rubber having epoxy groups, (2) a compound having at least two primary amino groups, and (3) a sulfur vulcanization system.
Claims5
A cis-1,4-polyisoprene rubber composition capable of giving a vulcanizate having improved strength, said composition comprising (1) an epoxidized synthetic cis-1,4-polyisoprene rubber having 0.02 to 1.5 epoxy groups per 100 isoprene monomer units, (2) 0.05 to 3.0 parts by weight of a compound having at least two primary amino groups per 100 parts by weight of the rubber (1), and (3) a sulfur vulcanization system comprised of at least one of sulfur and sulfur-donor compounds.
Dependencies are inferred from the claim text.