Patent ID: 7956146
Filing Date: 2011-06-07
Classification: B60C,C08F,C08K,Y10S,Y10T

Abstract:
1. A pneumatic rubber tire having a circumferential rubber tread wherein said tread is a rubber composition exclusive of cis 1,4-polyisoprene rubber and comprised of, based on parts by weight per 100 parts by weight of the tread rubber (phr), (A) 100 phr of cis 1,4-polybutadiene rubber comprised of: (B) about 40 to about 110 phr of reinforcing filler wherein said reinforcing filler is a combination of rubber reinforcing carbon black and synthetic amorphous silica (precipitated silica) comprised of: (C) coupling agent having a moiety reactive with hydroxyl groups on said precipitated silica and another different moiety interactive with carbon-to-carbon double bonds of said cis 1,4-polybutadiene rubber.