Thermosetting silicone composition

Details Thermosetting silicone composition Thermosetting silicone composition

1994-12-16

1999-03-02

Glass, Margaret W.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

523209, 528 15, C08G 7708

Patent

active

058772375

ABSTRACT:
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 mole % PhSiO.sub.3/2 siloxane units and 5 to 20 mole % MeViSiO.sub.2/2 siloxane units, wherein Ph denotes phenyl, Me denotes methyl and Vi denotes vinyl; said resin having a glass transition point of 40.degree. to 70.degree. 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.

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patent: 5015691 (1991-05-01), Lewis et al.
patent: 5017654 (1991-05-01), Togashi et al.
patent: 5494750 (1996-02-01), Fujioka et al.
patent: 5525425 (1996-06-01), Fujioka et al.
patent: 5616632 (1997-04-01), Fujiki et al.

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