Patent ID: 6521713
Filing Date: 2003-02-18
Classification: C08K,C08L

Abstract:
A vulcanizable rubber composition, comprising:(a) an ethylene-propylene-nonconjugated diene copolymer rubber (EPDM) having a Mooney viscosity (MS1+4, 160Â° C.) of 40 to 80, wherein the diene is selected from the group consisting of 1,4-hexadiene; 1,6-octadiene; 2-methyl-1,4-hexadiene; 6-methyl-1,5-heptadiene; 7-methyl-1,6-octadiene; cyclohexadiene; dicylopentadiene; methylterahydroindene; 5-vinylnorbornene; 5-ethylidene-2-norbornene; 5-methylene-2-norbornene; 5-isopropylidene-2-norbornene; 6-chlormethyl-5-isopropenyl-2-norborene; 2,3-diisopropylidene-5-norbornene; 2-ethylidene-3-isopropylidene-5-norbornene; and 2-propenyl-2,2-norbornadiene; and a sufficient amount of a cross-linking system capable of crossing the rubber; (b) at least one of the alkoxysilane compounds selected from the group consisting of bis-3-(trimethoxysilyl)propyl-tetrasulfane; bis-3-(triethoxysilyl)propyl-tetrasulfane; bis-3-(tripropoxysiliyl)propyl-tetrasulfane; and 3-Butene-triethoxysilane; (c) silica and/or silicate powder having a BET specific surface area of 50 to 100 m2/g; and (d) carbon black with a specific surface area ranging between 5 to 90m2/g in an amount of 0.1 to 60 parts by weight, and/or a mineral filler with a specific surface area ranging between 1 and 30m2/g in an amount of 0.1 to 100 parts by weight.