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US 7,396,872 B2Granted
Greasy silicone composition
AssigneeDow Corning Toray Silicone Co., Ltd.
InventorKazuhiro Sekiba
Life of this patent
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Abstract
A grease-like silicone composition comprising at least a liquid organopolysiloxane comprising siloxane units represented by the formula R2SiO2/2, siloxane units represented by the formula RSiO3/2, and siloxane units represented by the formula R3SiO1/2 and a thickening agent. A grease-like silicone composition is provided that is capable of containing a large amount of thickening agent and possesses superior heat resistance.
Claims18
A grease-like silicone composition comprising:
- (A) a liquid organopolysiloxane comprising:
- (i) 80 to 96.5 mol % of siloxane units represented by the formula R2SiO2/2;
- (ii) 1.0 to 10.0 mol % of siloxane units represented by the formula RSiO3/2, and,
- (iii) 0.25 to 10.0 mol % of siloxane units represented by the formula R3SiO1/2, wherein each R is a monovalent hydrocarbon group, and
- (B) a thermally conductive powder present in an amount of from 200 to 2000 parts by weight per 100 parts by weight of component (A).
2 more elements
A method of preparing a grease-like silicone composition comprising the step of mixing:
- (A) a liquid organopolysiloxane comprising:
- (i) 80 to 96.5 mol % of siloxane units represented by the formula R2SiO2/2;
- (ii) 1.0 to 10.0 mol % of siloxane units represented by the formula RSiO3/2, and,
- (iii) 0.25 to 10.0 mol % of siloxane units represented by the formula R3SiO1/2, wherein each R is a monovalent hydrocarbon group, and
- (B) a thermally conductive powder present in an amount of from 200 to 2000 parts by weight per 100 parts by weight of component (A).
2 more elements
Dependencies are inferred from the claim text.