Patent ID: 6899991

Claim:
A photo-curable resin composition comprising (A) 100 parts by weight of an organosiloxane-bearing polymer based on recurring units of the following general formula (1): wherein R 1 to R 4 are each independently a monovalent hydrocarbon radical of 1 to 8 carbon atoms, n is an integer of 1 to 1,000, and X is a radical selected from the group consisting of and having a weight average molecular weight of 500 to 200,000, (B) 1 to 50 parts by weight of at least one member selected from the group consisting of formalin-modified or formalin-alcohol-modified amino condensates, phenol compounds having on the average at least two methylol or alkoxymethylol radicals per molecule, and epoxy compounds having on the average at least two epoxy radicals per molecule, (C) 0.1 to 20 parts by weight of a photoacid generator, and (D) 0.01 to 20 parts by weight of a silane compound of the following general formula (2): (R 11 ) m Si(OR 12 ) 4−m (2) wherein R 11 is a substituted or unsubstituted monovalent hydrocarbon radical of 1 to 9 carbon atoms, R 12 is an alkyl radical of 1 to 4 carbon atoms, R 11 and R 12 may be the same or different, m is an integer of 0 to 2, or a partial hydrolytic condensate thereof.