Patent ID: 6833411
Filing Date: 2004-12-21
Classification: C08L

Abstract:
A composition comprising:(A) from 2 to 40 parts by weight of a block copolymer which is a block copolymer having at least two polymer blocks comprising at least 70% by weight of a vinylaromatic hydrocarbon and further having at least one copolymer block comprising isoprene and 1,3-butadiene and/or at least one copolymer block comprising isoprene, 1,3-butadiene and a vinylaromatic hydrocarbon, the block copolymer having a vinylaromatic hydrocarbon content of from 5% by weight to less than 60% by weight and a total content of isoprene and 1,3-butadiene of from more than 40% by weight to 95% by weight, and the block copolymer having an isoprene/1,3-butadiene weight ratio in the range of from 95/5 to 5/95, a vinyl bond amount less than 40% by weight, and a number-average molecular weight in the range of from 30,000 to 500,000; and (B) from 98 to 60 parts by weight of either at least one thermoplastic resin selected from styrene resins, polyolefin resins and poly(phenylene ether) resins, or an asphalt.