| abstract |
This invention provides the organopolysiloxane composition which has two hardening mechanisms of photopolymerization and condensation hardening, and is excellent in adhesiveness and the adhesiveness especially to the to-be-adhered body immediately after ultraviolet irradiation.n n n The organopolysiloxane composition of the present invention comprises (A) a diorganopolysiloxane having hydroxyl groups at both ends of a molecular chain, (B) an organosilicon compound represented by the following formula (2), (C) a condensation curing catalyst, and (D) a photopolymerization It contains an initiator.n n n <Formula 2>n n n n n n n n Wherein R 4 is a hydrogen atom, a phenyl group or a halogenated phenyl group, R 5 is a hydrogen atom or a methyl group, R 6 is a monovalent hydrocarbon group, X is a hydrolyzable group, Z 1 is -R 7- , -R 7 O- or -R 7 (CH 3 ) 2 SiO- (R 7 is a divalent hydrocarbon group), Z 2 is an oxygen atom or a divalent hydrocarbon group, m is 0, 1 or 2, n is 0, 1 or 2. |