| 摘要 |
PURPOSE:To obtain a silicone composition with an intermediate to high releasing power by compounding two specific organopolysiloxanes, an organohydrogenpolysiloxane, and a platinum compd. CONSTITUTION:The title compsn. is prepd. by compounding: 100 pts.wt. organopolysiloxane (A) having a viscosity at 25 deg.C of 50cSt or higher and at least two vinyl groups directly attached to Si in the molecule; 0.1-30 pts.wt. organohydrogenpolysiloxane (B) of formula I, formula II, (wherein a is 2 or higher; and b is 0 or a positive integer), etc., having at least two hydrogen atoms directly attached to Si in the molecule; 0.1-10 pts.wt. organopolysiloxane (C) of formula III [wherein R<1> is 1-3C alkyl or phenyl; R<2> is R<1> or R<3>; and R<3> is a group of formula IV (wherein l is 14-20; m is 50-200; and n is 0-20)]; and a platinum compd. (D) (e.g. chloroplatinic acid) in an amt. of the platinum of 10ppm or higher based on the organopolysiloxane A. |
