Patent ID: 8258213
Filing Date: 2012-09-04
Classification: C08C,C08K,C08L

Abstract:
1. A rubber composition for a breaker topping comprising 15 to 50 parts by weight of carbon black, 5 to 50 parts by weight of silica and 1.0 to 3.0 parts by weight of benzothiazolyl sulfenamide represented by the chemical formula (1): wherein R 10 to 45% by weight of a modified butadiene rubber and/or a modified styrene-butadiene rubber and 55 to 90% by weight of a natural rubber and/or an isoprene rubber, wherein the modified butadiene rubber is the modified butadiene rubber obtained by carrying out the polymerization of 1,3-butadiene by a lithium initiator and then adding a tin compound or the modified butadiene rubber modified with a compound represented by the formula (2): wherein R