| 摘要 |
PURPOSE:To provide the titled compsn. which is low-temperature curing and has excellent resistance to heat and oils, consisting of a specified organopolysiloxane, an organohydrogenpolysiloxane, a Pt catalyst and an inorg. filler. CONSTITUTION:100pts.wt. long-chain organopolysiloxane (A) contg. at least two alkenyl groups attached to Si atom per molecule and having the formula (wherein R<1> is alkenyl, R<2> is a monovalent hydrocabon group contg. no aliph, unsaturated group; m is 0.002-3; n is 0 or a positive number), an organohydrogenpolysiloxane (B) contg. at least two SiH groups per molecule in such a quantity as to give 0.5-4 H atoms attached to Si atom per one alkenyl group in component A, as a crosslinking agent, a Pt(compd.) (C) as a catalyst for an addition reaction, and 5-500pts.wt. inorg. filler (D) are sufficiently purified and blended together to obtain the titled compsn. having an electrical conductivety of an aqueous extract thereof of 10mu mho/cm or below. |
