Patent ID: 8362129

Claim:
A room-temperature-curable polyorganosiloxane composition, comprising: (A) 100 parts by mass of polyorganosiloxane capped with hydroxyl groups at molecular chain termini and having a viscosity at 23° C. of 0.02 to 1000 Pa·s; (B) 1 to 200 parts by mass of a filler capable of imparting flame retardancy; (C) 0.1 to 10 parts by mass of a partially hydrolyzed condensate of a silane compound of a general formula (1): R 1 a Si(OR 2 ) 4-a (1) wherein R 1 ('s) and R 2 ('s) independently represents substituted or unsubstituted univalent hydrocarbon group, and ‘a’ represents a numerical value in the range of 0≦a≦0.2 on average; (D) 0.1 to 10 parts by mass of a silane compound of a general formula (2): R 3 2 Si(OR 4 ) 2 (2) wherein R 3 's and R 4 's independently represent a substituted or unsubstituted univalent hydrocarbon group, or a partially hydrolyzed condensate of the silane compound having 3 or less Si atoms in its molecule; (E) 0.1 to 10 parts by mass of an amine-functionalized silane compound of a general formula (3): (R 5 O) 3 Si—R 6 —NH—R 7 (3) wherein R 5 's independently represent a substituted or unsubstituted univalent hydrocarbon group, R 6 represents a substituted or unsubstituted bivalent organic group, and R7 represents a hydrogen atom, a substituted or unsubstituted univalent hydrocarbon group, or an aminoalkyl group; (F) 0.001 to 10 parts by mass of a curing catalyst; and (G) 1 to 1000 ppm of a platinum compound (in terms of the platinum content), wherein the (D) component contains 0.1 to 15 mols of the OR 4 group per mol of the OR 2 group in the (C) component.