B - Operations – Transporting – 60 – C
Patent
B - Operations, Transporting
60
C
152/82
B60C 9/08 (2006.01) B60C 1/00 (2006.01) B60C 9/18 (2006.01)
Patent
CA 1115191
Abstract of the Disclosure Radial tires having improved irregular wear resistance, which are reinforced with a belt cord layer and a carcass cord layer, characterized in that as the embedding rubber of the belt cord layer, use is made of natural rubber, polyisoprene rubber or a blend rubber consisting of said rubber and less than 30 parts by weight of at least one of polybutadiene rubber and styrene-butadiene copolymer rubber and that for the ground contact area of the tread of tire, a rubber composition consisting of 100 parts by weight of styrene-butadiene copolymer rubber having a viscosity average molecular weight of not less than 2x105 or a blend rubber consisting of more than 50 parts by weight of said copolymer rubber and at least one of natural rubber, polyisoprene rubber and polybutadiene rubber, 5-60 parts by weight of at least one of a liquid styrene-butadiene copolymer, a liquid polyisoprene polymer and a liquid polybutadiene polymer having a viscosity average molecular weight of 5x103 - 7x104, and 40-90 parts by weight of a carbon black, is used.
335377
Imai Isamu
Ohtsuka Junichi
Bridgestone Tire Company Limited
Swabey Ogilvy Renault
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