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US 6,040,277 AGranted
Grease compositions employing fluorinated polymer oils and hexagonal lattice boron nitride
AssigneeDow Corning Corporation
InventorGerardo Caporiccio
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Abstract
Disclosed are grease compositions containing a liquid fluorinated polymer and a thickening agent containing hexagonal lattice boron nitride powder having a bimodal particle size distribution as well as grease compositions containing a liquid fluorinated polymer and a thickening agent containing hexagonal lattice boron nitride powder and a solid fluorinated polymer.
Claims11
A grease composition comprising:
- (A) between 5 and 45 weight percent of a thickening agent comprising boron nitride powder having a bimodal particle size distribution in which between 25 and 75 weight percent of the boron nitride has an average particle size in the range of from 2 to 50 micrometers and between 75 and 25 weight percent of the boron nitride has an average particle size in the range of from 0.01 to 1 micrometer;
- and
- (b) between 55 and 95 weight percent of a liquid fluorinated polymer oil.
Dependencies are inferred from the claim text.