Patent ID: 7271233

Claim:
A room-temperature-curable silicone rubber composition comprising (A) 100 parts by weight of a mixture comprising: (A-1) 20 to 95 wt. % of a polydiorganosiloxane represented by the following general formula (A-2) 5 to 80 wt. % of a polydiorganosiloxane represented by formula and (A-3) 0 to 30 wt. % of a polydiorganosiloxane represented by formula where R 1 and R 2 are independently selected from the group consisting of alkyl groups and alkoxyalkyl groups, R 3 is selected from the group consisting of alkyl groups, cycloalkyl groups, aryl groups, aralkyl groups, halogenated hydrocarbon groups, and the cyanoalkyl group, R 4 is independently selected from the group consisting of —OSi R 2 3 , hydrogen and an alkoxy group, R 7 is R 2 or R 3 , each Y and Z is independently selected from the group consisting of oxygen and a divalent hydrocarbon group, α is 0 or 1, q is 0, 1 or 2, and n is a number that provides the respective polyorganosiloxanes with a viscosity within the range of 20 to 1,000,000 mPa·s at 25° C., said polyorganosiloxanes being selected from the group of compounds wherein: when R 4 is —OSiR 2 3 , Y is independently selected from the group consisting of oxygen and a divalent hydrocarbon group, Z is a divalent hydrocarbon group, R 7 is R 2 and q is 0,1 or 2; and when R 4 is independently selected from the group consisting of hydrogen and an alkoxy group, Y is independently selected from the group consisting of methylene or ethylene radicals, Z is independently selected from the group consisting of oxygen and a divalent hydrocarbon group, q is 2 and R 7 is R 3 ; (B) 1 to 25 parts by weight of a material selected from the group consisting of (a) alkoxysilanes, (b) partial hydrolysis products of (a), and (c) condensation products of (b) thereof wherein (a) has the general formula R 5 b Si(OR 6 ) 4-b , where R 5 is a monovalent hydrocarbon group, R 6 is independently selected from the group consisting of an alkyl group and an alkoxy alkyl group, and b is 0 or 1; and (C) 0.5 to 10 parts by weight of an organotitanium compound.