| 摘要 |
PURPOSE:The titled composition, obtained by blending a specific organopolysiloxane with a specific amount of a specific organohydrogenpolysiloxane, etc., having a high curing rate on irradiation with light as well as improved peeling performance and suitable as a back treating agent, etc., for tapes, etc. CONSTITUTION:A composition obtained by blending (A) 100pts.wt. organopolysiloxane, having at least one terminal group of the molecular chain sealed with trivinylsilyl group and expressed by the formula [R<1> is 1-6C saturated monofunctional hydrocarbon; R<2> and R<3> are 1-12C (substituted) monofunctional hydrocarbon; a and b are 2 or 3; n is 20-2,000] with (B) 0.1-50 pts.wt. organohydrogenpolysiloxane having hydrogen atoms linked to the silicon atom at 10:1-1:10 molar ratio based on the amount of the vinyl groups in the component (A) and >=2identicalSiH groups in one molecule, (C) 1-1,000ppm platinum based catalyst and (D) 0.1-10pts.wt. photosensitizer, e.g. benzil, etc. |
