Rubber compounding material and composition.

摘要

A rubber compounding material incorporating a cyclopentadiene-based pertroleum resin prepared by thermally copolymerizing 100 parts by weight of a cyclopentadiene-based feed or dicyclopentadiene-based feed with about 5 to 100 parts by weight of an alpha -olefin having from 6 to 16 carbon atoms at a temperature of from about 200 to 300 DEG C for a period of from about 10 minutes to 10 hours in the presence or absence of a solvent. A rubber composition is also disclosed, composed of this rubber compounding material in combination with a diene-based polymer. In rubber compositions for tires, the compounding material and rubber composition of the present invention greatly improve resistance to cutting and chipping of the tread.