Room temperature-curable organopolysiloxane composition

Claim 1

A room temperature-curable organopolysiloxane composition comprising (A) 100 weight parts organopolysiloxane having at least 2 silicon-bonded alkoxy groups in each molecule, and the organopolysiloxane being represented by the general structure ##STR6## wherein R 6 is a monovalent hydrocarbon group; R 7 is a monovalent hydrocarbon group or alkoxy-substituted hydrocarbon group; R 8 is a group selected from the group consisting of monovalent hydrocarbon groups, halogenated hydrocarbon groups, and cyanoalkyl groups; Y is an oxygen atom; c is two or three; and n is a positive number which gives a viscosity of 20 to 1,000,000 centipoise at 25° C., (B) 0.5 to 15 weight parts organosilane represented by the general formula: R.sup.1.sub.a Si(OR.sup.2).sub.4-a wherein R 1 is a monovalent hydrocarbon group, R 2 is a monovalent hydrocarbon group or alkoxy-substituted hydrocarbon group, and a is zero or one, or a partial hydrolysis condensate thereof, (C) 0.01 to 15 weight parts mercapto group-containing alkoxysilane represented by the general formula ##STR7## wherein R 3 is a divalent organic group, R 4 and R 5 are substituted or unsubstituted monovalent hydrocarbon groups, and b is zero or one, or partial hydrolysis condensate thereof; and (D) 0.01 to 10 weight parts curing catalyst.