Dual curable organopolysiloxane composition

摘要

An organopolysiloxane composition is provided including: (A) an organopolysiloxane with hydroxyl groups at both terminals of the molecular chain; (B) an organosilicon compound represented by the general formula shown below: <CHEM> wherein, R<2> represents a hydrogen atom, a phenyl group or a halogenated phenyl group, R<3> represents a hydrogen atom or a methyl group, R<4> represents a monovalent hydrocarbon group, X represents a hydrolysable group, Z<1> represents -R<5>-, -R<5>O- or -R<5)<CH3)2SiO- (wherein R<5> represents a bivalent hydrocarbon group), Z<2> represents an oxygen atom or a bivalent hydrocarbon group, m represents 0, 1 or 2, and n represents 0, 1 or 2; (C) a condensation curing catalyst; and (D) a photopolymerization initiator. This composition has two curing mechanisms, namely photopolymerizability and condensation curability, and displays superior adhesiveness, and in particular displays favorable adhesiveness to a substrate immediately following irradiation with ultraviolet light.