SILICONE SELF-ADHESIVE COMPOSITION WITH GOOD ADHESIVENESS TO SUBSTRATE AND SILICONE SELF-ADHESIVE TAPE

摘要

PPROBLEM TO BE SOLVED: To provide a silicone self-adhesive composition and a silicone self-adhesive tape using it. PSOLUTION: The silicone self-adhesive composition is an addition reaction-curing type silicone self-adhesive composition comprising (A) a linear polysiloxane having two or more alkenyl groups in one molecule and exhibiting viscosity of 10,000 mPa s at 25C, (B) a polysiloxane comprising an RSP1/SPSB3/SBSiOSB0.5/SBunit and an SiOSB2/SBunit at a molar ratio, which is a molar ratio of the RSP1/SPSB3/SBSiOSB0.5/SBunit to the SiOSB2/SBunit, of 0.6-1.7 (RSP1/SPis a 1-10C monovalent hydrocarbon group), (C) a polysiloxane having two or alkenyl groups in one molecule and exhibiting viscosity of 20-500 mPa s at 25C, (D) a polysiloxane containing two or more SiH groups in one molecule, (E) a reaction controlling agent, and (F) a platinum catalyst. The self-adhesive tape has a plastic film and a cured product layer of the silicone self-adhesive composition laminated to at least one surface of the plastic film. PCOPYRIGHT: (C)2010,JPO&INPIT