Thermosetting silicone composition.

摘要

The thermosetting silicone composition of the instant invention is comprised of (a) a diorganopolysiloxane containing alkenyl groups, (b) an organohydrogenpolysiloxane, (c) a platinum catalyst-containing silicone resin fine particle catalyst comprised of (i) a thermoplastic silicone resin containing 5 to 90 moles% PhSiO3/2 siloxane units and 5 to 20 mole% MeViSiO2/2 siloxane units, wherein Ph denotes phenyl, Me denotes methyl and Vi denotes vinyl; said resin having a glass transition point of 40 to 70 DEG C and (ii) 0.05 to 2 wt% as platinum atoms of a platinum catalyst; and (d) a hydrosilation reaction inhibiting compound. The thermosetting silicone compositions have excellent storage stability at about room temperature, and cure at a fast rate when heated.