| 摘要 |
PURPOSE: To obtain a composition capable of giving silicone gel excellent in vibration-proofing properties and heat resistance. CONSTITUTION: This silicone gel composition comprises (A) 100 pts.wt. of a diorganopolysiloxane 50-100000cps in viscosity at 25 deg.C having in one molecule at least two silicon atom-bound alkenyl groups, (B) 1-50 pts.wt. of an organopolysiloxane resin with average unit expressed by formula (R3 SiO1/2 )a (SiO4/2 )1.0 (R is a monovalent hydrocarbon group except alkenyl group), (C) an organopolysiloxane 1-1000000cps in viscosity having in one molecule at least two silicon atom-bound hydrogen atoms on average, and (D) a catalytic amount of a hydrosilylating catalyst. This composition is cured to give a silicone gel 0 in the JIS A hardness, <=300 in penetration, and 0.1-2 in tanδ.
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