Patent ID: 7776950
Filing Date: 2010-08-17
Classification: C08K

Abstract:
1. An antivibration rubber composition for automobiles containing: (A) diene rubber; (B) silica; and (C) sulfur, wherein the Component (A) is at least one selected from a group consisting of natural rubber (NR), isoprene rubber (IR), butadiene rubber (BR), styrene-butadiene rubber (SBR) and acrylonitrile-butadiene rubber (NBR), the amount of the Component (B) contained is set to a range from 10 to 80 parts by weight with respect to 100 parts by weight of the Component (A), the Component (B) has the following properties: (α) a surface silanol-group density of not less than 3.0 groups/nm (β) an average particle size of 2 to 10 μm as determined by the Coulter method, and (γ) a BET specific surface area of 15 to 29 m