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US 5,708,076 AGranted
Room temerature-curable organopolysiloxane composition
AssigneeDow Corning Toray Silicone Co., Ltd.
InventorsYuichi Tsuji, Miyoji Fukayama
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Abstract
A room temperature-curable organopolysiloxane composition with excellent extrudability and self-extinguishing properties is made from a hydroxyl endblocked polydiorganosiloxane, aluminum hydroxide having an average particle size not exceeding 50 micrometers, colloidal calcium carbonate, platinum or a platinum compound, and a crosslinking silane or siloxane having at least three hydrolyzable groups.
Claims18
A room temperature-curable organopolysiloxane composition comprising
- (A) 100 parts by weight of hydroxyl group-terminated polydiorganosiloxane having a viscosity at 25.degree. C. of 100 to 500,000 centipoise,
- (B) 50 to 100 parts by weight of aluminum hydroxide microparticles having an average particle diameter not exceeding 50 micrometers,
- (C) 50 to 100 parts by weight of colloidal calcium carbonate,
- (D) platinum or a platinum compound, in a quantity sufficient to provide 1 to 200 parts by weight platinum metal per 1,000,000 parts by weight of component (A), and
- (E) 0.5 to 20 parts by weight of a silicon compound which contains at least 3 Si-bonded hydrolyzable groups in each molecule, where the silicon compound is a silane, siloxane, or mixture of silane and siloxane.
2 more elements
Dependencies are inferred from the claim text.