| abstract |
Disclosed is a composition for preparing a silicone elastic body having curability, high tear strength and low hardness. The composition comprises at least two organopolysiloxanes (A) each comprising independently at least two silicon-bonded alkenyl groups per molecule, provided that the at least two organopolysiloxanes (A) are At least one substantially linear organopolysiloxane and at least one substantially dendritic organopolysiloxane), each independently comprising at least two silicon-bonded hydrogen atoms per molecule. At least two organohydrogenpolysiloxanes (B), wherein the at least two organohydrogenpolysiloxanes (B) are at least one substantially linear organohydrogenpolysiloxane and at least one substantially dendritic. The at least two organohydrogenpolysiloxanes (B) The molar ratio of the total amount of silicon-bonded hydrogen atoms contained in at least two organohydrogenpolysiloxanes (B) to one silicon-bonded alkenyl group contained in at least two organopolysiloxanes (A) is about 1.3 to about 2. .2), filler (C) (amount of about 15 to about 45 parts by weight per 100 parts by weight of polyorganosiloxane (A)), catalyst (D), and inhibition Comprising an agent. [Selection figure] None |