| 摘要 |
PROBLEM TO BE SOLVED: To provide a silicone composition for releasable hardened film, which shows a low release resistance even when exfoliated at low or high speed, without lowering residual adhesion rate of an adhesive material attached to the releasable hardened film. SOLUTION: This composition is composed of (A) 100 pts.wt. of a branched organopolysiloxane, having a dynamic viscosity of 50 to 5,000 mm2/s at 25 deg.C, and having siloxane units shown by the formula R3SiO0.5, shown by the formula RVSiO and shown by the formula RSiO1.5 (R is the same or a different monovalent hydrocarbon group other than alkenyl group; and V is a >=4C alkenyl), (B) 1 to 50 pts.wt. of an organohydrogenpolysiloxane having a dynamic viscosity of 1 to 1,000 mm2/s at 25 deg.C and at least 3 hydrogen atoms bound to silicon atoms in the molecule, and (C) a platinum-based catalyst of a catalyst quantity. |
