AN ELASTOMER COMPOSITION, A VULCANIZED COMPOSITION AND A TIRE EMPLOYING SAID ELASTOMER COMPOSITION

摘要

The present invention provides an elastomer composition which possesses well-balanced low rolling resistance and high wet grip properties. The elastomer composition comprises a styrene-butadiene rubber wherein not more than 18 percent of said rubber is that having an extension of molecular chain of not more than 3,500 ANGSTROM ; said molecular chain being measured by gel permeation chromatography and calculated in terms of standard polystyrene.