Patent ID: 8623987

Claim:
A room temperature fast-curing organopolysiloxane composition consisting of a first part composition and a second part composition, said first part composition comprising (A) 10 to 90 parts by weight of a diorganopolysiloxane having both ends terminated with a hydroxy group and/or a hydrolyzable group, (B) 0.5 to 10 parts by weight of a silane and/or a siloxane having at least 3 alkenoxy silyl groups in its molecule, and (D) 0.01 to 10 parts by weight of a curing catalyst selected from the group consisting of guanidine, 1,8-diazabicyclo[5.4.0]-7-undecene and an alkoxysilane having a guanidyl group, and said second part composition comprising (A) 10 to 90 parts by weight of a diorganopolysiloxane having both ends terminated with a hydroxy group and/or a hydrolyzable group, (C) 0.5 to 10 parts by weight of a silane and/or a siloxane having at least 3 aminosilyl groups in its molecule being capable of forming a compound having —NH2 groups by hydrolysis, and (D) 0 to 9.99 parts by weight of a tin catalyst, with the proviso that the total amount of component (A) contained in the first and second part compositions is 100 parts by weight and the total amount of component (D) contained in the first and second part compositions is 0.01 to 10 parts by weight, wherein the component (B) is an alkenoxysilane represented by the following formula: R 1 x -Si(O—CR 2 ═CR 3 R 4 ) 4-x wherein R 1 and R 2 are independently methyl group, ethyl group, vinyl group or phenyl group; R 3 and R 4 are independently a hydrogen atom, methyl group or ethyl group, or R 2 and R 3 may bond together to form —CH 2 ) 4 — group with the proviso that R 4 is a hydrogen atom; and x is 0 or 1; or its partial hydrolyzate, and the component (C) is the aminosilane represented by the following formula: R 5 y —Si(NHR 6 ) 4-y wherein R 5 is methyl group, ethyl group, vinyl group or phenyl group, R 6 is ethyl group, propyl group, butyl group, pentyl group or cyclohexyl group, and y is 0 or 1.