Abstract: A silicone hybrid pressure sensitive adhesive composition that cures to form a silicone hybrid pressure sensitive adhesive contains a polydiorganosiloxane having reactive groups. The reactive groups include a silicon bonded (meth)acryloxyalkyl-functional group in a pendant position and a silicon bonded aliphatically unsaturated hydrocarbon group. An adhesive article, such as a tape, can be formed by coating the silicone hybrid pressure sensitive adhesive composition on a surface of a substrate and curing said composition via hydrosilylation reaction (B-staged cure) to form a silicone hybrid pressure sensitive adhesive layer on the surface. The silicone hybrid pressure sensitive adhesive layer contains (meth)acryloxyalkyl-functional groups, which can further react and crosslink via exposure to UV radiation (C-staged cure).

Abstract: A photocurable silicone composition is disclosed. A cured product of the composition is also disclosed, as well as methods of forming the same. The photocurable silicone composition comprises: (A) a specific organopolysiloxane having alkenyl groups in a molecule; (B) a compound having at least two thiol groups in a molecule; (C) a photoradical initiator having a phosphorus atom; and (D) a specific hydroxyphenyl triazine compound. The composition exhibits excellent curability by LED lamp with wide UV-Visible range as well as metal-halide lamp, and cures to form a cure product exhibiting excellent resistance to light.