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US 6,333,364 B2Granted
Silicone rubber compositions
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsNoriyuki Meguriya, Nobumasa Tomizawa
Life of this patent
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Abstract
A silicone rubber composition comprising (A) 100 parts by weight of a heat curable organopolysiloxane composition, (B) 0.1-30 parts by weight of unexpanded or expanded organic resin-base microspheres, and (C) 0.5-50 parts by weight of a polyhydric alcohol or derivative thereof cures into a low specific gravity silicone rubber elastomer which experiences a minimal compression set at elevated temperature.
Claims12
A silicone rubber composition comprising
- (A) 100 parts by weight of a heat curable organopoly-siloxane composition,
- (B) 0.1 to 30 parts by weight of a thermally expandable, unexpanded organic resin fine filler or expanded organic resin fine hollow filler, and
- (C) 0.5 to 50 parts by weight of at least one of polyhydric alcohols and derivatives thereof, wherein the polyhydric alcohol is a monomer having at least two alcoholic hydroxyl groups in a molecule or an oligomer thereof having a degree of polymerization of 2 to 10, and the polyhydric alcohol derivative is a monomer having at least one residual alcoholic hydroxyl group in a molecule or an oligomer thereof having a degree of polymerization of 2 to 10.
Dependencies are inferred from the claim text.