Organopolysiloxane composition for the formation of a cured release film

Abstract

The instant invention pertains to an organopolysiloxane composition for the formation of a cured release film wherein said organopolysiloxane composition cures rapidly under exposure to ultraviolet radiation to form a cured film that tightly adheres to various types of supports or base materials. The organopolysiloxane composition for the formation of a cured release film of the instant invention is comprised of (A) an organopolysiloxane that contains in each molecule at least 2 higher alkenyl groups as represented by the general formula H.sub.2 C.dbd.CH--(CH.sub.2).sub.n -- wherein n has a value of 2 to 8, (B) an organopolysiloxane that contains at least 2 mercaptoalkyl groups in each molecule, (C) an organopolysiloxane selected from the group consisting of organopolysiloxanes that contain in each molecule 1 higher alkenyl group with the general formula C.sub.2 C.dbd.CH--(CH.sub.2).sub.n - wherein n=2 to 8 and organopolysiloxanes that contain 1 mercaptoalkyl group in each molecule, and (D) a photosensitizer.

Dependencies are inferred from the claim text.