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US 7,404,853 B2Granted
Thermally conductive grease
Assignee3M Innovative Properties Company
InventorPhilip E. Kendall
Life of this patent
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Abstract
The invention relates to thermally conductive greases that may contain carrier oil(s), dispersant(s), and thermally conductive particles, wherein the thermally conductive particles are a mixture of at least three distributions of thermally conductive particles, each of the at least three distributions of thermally conductive particles having an average (D50) particle size which differs from the other average particle sizes by at least a factor of 5
Claims22
A thermally conductive grease comprising:
- 0 to about 49.5 weight percent of carrier oil;
- about 0.5 to about 5 weight percent of at least one polymeric dispersant;
- and
- at least about 49.5 weight percent of thermally conductive particles, wherein the thermally conductive particles comprise a mixture of at least three distributions of thermally conductive particles, each of the at least three distributions of thermally conductive particles having an average (D50) particle size which differs from the other distributions by at least a factor of 5, and further wherein the thermally conductive grease exhibits a bulk thermal conductivity of from about 2 to about 7 W/m-° K. and a viscosity measured at 25° C. of at least about 106 mPas.
1 more element
Dependencies are inferred from the claim text.