RUBBER COMPOSITION

摘要

PURPOSE:To make full use of the inherent reinforcing capability of carbon black to thereby obtain a rubber compsn. excellent in resistance to dynamic abrasion by improving the dispersibility of a carbon black having an N2SA of 120m<2>/g or higher in a rubber. CONSTITUTION:100 pts.wt. diene rubber is compounded with 50-150 pts.wt. carbon black and an ethylene-vinyl acetate or ethylene-acrylic acid copolymer having a content of vinyl acetate or acrylic acid of 10-20wt.% and a Brookfield viscosity at 121 deg.C of 500-20,000mPas in an amt. of 2-20 pts.wt. based on 100 pts.wt. carbon black.