Patent ID: 6339122
Filing Date: 2002-01-15
Classification: B60C,C08K,C08L,Y02T,Y10T

Abstract:
A vulcanizable rubber composition comprising:a) a cross-linkable unsaturated chain polymer base including natural rubber and at least a copolymer obtained by polymerizing a conjugated diolefin with a vinyl aromatic hydrocarbon, wherein at least 50% by weight of the conjugated diolefin polymerizes in 1,2 form with the vinyl aromatic hydrocarbon to obtain in the copolymer a quantity of from 30% to 70% by weight to the total weight thereof an olefin fraction having a 1,2 structure; and b) at least a carbon black-based reinforcing filler having a DBP absorption value measured according to ISO 4656-1 equal to at least 110 ml/100 g, a reduction in the DBP absorption value as measured after compression according to ISO 6894 equal to at least 25 ml/100 g and a surface area as measured of CTAB absorption according to ISO 6810 not greater than 120 m2/g.