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US 11,220,650 B2Granted
Grease composition
AssigneeShell Oil Company
InventorsKazuya Watanabe, Keiji Tanaka, Hiroki Yano
Life of this patent
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Abstract
A grease composition containing a base oil and a calcium complex soap as a thickening agent, wherein a C18-22 straight chain, substituted or unsubstituted higher fatty acid; a substituted or unsubstituted aromatic monocarboxylic acid having a benzene ring; a C2-4 straight-chain saturated lower fatty acid; and a substituted or unsubstituted saturated dicarboxylic acid are used as carboxylic acids constituting the calcium complex soap.
Claims9
A grease composition comprising:
- (a) a base oil;
- and
- (b) a calcium complex soap as a thickening agent, wherein the calcium complex soap comprises a carboxylic acid mixture comprising:
- (i) a higher mono fatty acid comprising a substituted or unsubstituted C18-22 straight hydrocarbon chain;
- (ii) an aromatic monocarboxylic acid comprising a substituted or unsubstituted aromatic monocarboxylic acid having a benzene ring;
- (iii) a saturated lower mono fatty acid comprising an unsubstituted C2-4 straight hydrocarbon chain;
- and
- (iv) a dicarboxylic acid comprising a substituted or unsubstituted saturated dicarboxylic acid,
- wherein the mass ratio of the aromatic monocarboxylic acid to the dicarboxylic acid ranges from 5:95 to 70:30.
6 more elements
Dependencies are inferred from the claim text.