C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
400/1126, 152/12
C08F 236/10 (2006.01) B60C 1/00 (2006.01) C08L 9/06 (2006.01)
Patent
CA 1185036
Abstract of the Disclosure A pneumatic tire comprising an improved tread is disclosed. The tread is composed of a rubber composi- tion comprising 10-120 parts by weight of carbon black having an iodine adsorption number of not less than 36 mg/g and a dibutyl phthalate adsorption number of not less than 60 ml/100 g and 0.4-5 parts by weight of vulcanizing agent based on 100 parts by weight of rubber content consisting of 10-100 parts by weight of styrene-butadiene copolymer rubber (hereinafter referred to as SBR-A) and 0-60 parts by weight of at least one diene rubber other than SBR-A; said SBR-A having a content of bound styrene (S) of 10-30 wt% and a content of 1,2-bond in butadiene portion (V) of 40-70 wt%, which are within a range of 65<1.7S+V<100, and satisfying that an amount of styrene sequence consisting of not less than 11 styrene monomer units is not more than 10 wt% of the content of bound styrene and an amount of styrene sequence consisting of not more than 5 styrene monomer units is not less than 80 wt% of the content of bound styrene.
409732
Ikegami Mikihiko
Ogawa Masaki
Bridgestone Tire Company Limited
Swabey Ogilvy Renault
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