Patent ID: 6906161

Claim:
A room-temperature curable organopolysiloxane composition comprising: (A) 100 parts by weight of a diorganopolysiloxane represented by a general formula (1) shown below: wherein, each R represents, independently, an unsubstituted or substituted monovalent hydrocarbon group, each A represents, independently, an oxygen atom or a bivalent hydrocarbon group of 1 to 8 carbon atoms, each Y represents, independently, a hydroxyl group or a hydrolysable group, m represents an integer from 0 to 2, and n represents a number which results in a viscosity at 25° C. for this diorganopolysiloxane within a range from 20 to 1,000,000 mm 2 /s; (B) 0.5 to 20 parts by weight of an organosilicon compound represented by a general formula (2) shown below, a partial hydrolysis-condensation product thereof, or a mixture of the two: R 1 a SiX 4-a (2) wherein, each R 1 represents, independently, an unsubstituted or substituted monovalent hydrocarbon group of 1 to 6 carbon atoms, each X represents, independently, a hydrolysable group, and a represents an integer from 0 to 2; and (C) 1 to 60 parts by weight of an oxyalkylene group-containing organopolysiloxane with at least one group represented by a general formula (3) shown below bonded to a silicon atom within each molecule: —R 2 —Si(R 3 ) 2 —O—(R 4 O) b —R 5 (3) wherein, R 2 represents a bivalent hydrocarbon group of 1 to 6 carbon atoms, each R 3 represents, independently, an unsubstituted or substituted monovalent hydrocarbon group of 1 to 6 carbon atoms, R 4 is an alkylene group of 2 to 4 carbon atoms, R 5 is an unsubstituted or substituted monovalent hydrocarbon group of 1 to 8 carbon atoms or a group represented by a formula —R 6 —SiX 3 where, X is as defined above, and R 6 is a bivalent hydrocarbon group of 1 to 6 carbon atoms, and b is an integer from 1 to 30.