Elastomer compositions for tire tread

摘要

Tires having good grip on wet road surfaces and low frictional resistance to rolling on the road surface have treads formed from vulcanizates of elastomer compositions comprising one or more polymers having a glass transition temperature (Tg) of minus 50 DEG or lower blended with a non-cross-linking polymer or heavy oil. Suitable non-cross-linking polymers are polyisobutylenes, especially ones having a molecular weight of 1.06 to 1.44 million which are very effective with natural rubber, polybutadienes and/or styrene-butadiene copolymers as the low Tg polymers.