Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,...
Patent
1996-02-05
1998-05-19
Tsang, Cecilia J.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
428407, 428402, 152208, 152209R, 152210, 524 4, 524 5, 524473, B60C 1100
Patent
active
057533652
ABSTRACT:
A rubber composition includes a rubber component and particulates of a crystalline syndiotactic-1,2-polybutadiene resin dispersed therein. The particulates have an average particle diameter of 1 to 500 .mu.m, and the melting point of the crystalline syndiotactic-1,2-polybutadiene resin is not less than 110.degree. C. The compounding ratio of the resin is 5 to 60 parts by weight relative to 100 parts by weight of the rubber component. The rubber composition is useful for tires, other rubber articles, etc. With respect to tires in particular, a pneumatic tire includes a rubber composition used for a tread, wherein the rubber composition includes a rubber component and particulates of crystalline syndiotactic-1,2-polybutadiene resin. The matrix portion of the tread rubber other than the above particulates is preferably a foamed rubber.
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World Patents Index Latest, Week 8819, for JP-A-63-75046. (1988).
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Aoyama Masanori
Hamada Tatsuro
Ishiguchi Koji
Iwafune Seiichiro
Morimoto Yoshiyuki
Bridgestone Corporation
Delaney Patrick R.
Tsang Cecilia J.
Ube Industries Ltd.
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