Grease composition containing urea, urea-urethane, or urethane thickeners
OwnerHirotugu Kinoshita, Makoto Sekiya +1inventors
InventorsHirotugu Kinoshita, Makoto Sekiya, Masaru Mishima
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Abstract
A grease composition comprises a base oil selected from the group consisting of mineral lubricant base oils, synthetic lubricant base oils and mixtures thereof, (A) 2 to 25 wt %, based on the total weight of the composition, of a thickener selected from the group consisting of urea compounds, urea-urethane compounds, urethane compounds and mixtures thereof and (B) 0.2 to 5.0 wt. %, based on the total weight of the composition, of an ingredient selected from the group consisting of oxidized paraffins, diphenylhydrogen phosphite, hexamethyl phosphoric triamide and mixtures thereof.
Claims21
A grease composition comprising:
- a base oil selected from the group consisting of mineral lubricant base oils, synthetic lubricant base oils and mixtures thereof;
- (A) 2 to 25 wt %, based on the total weight of the composition, of a thickener for use in the grease composition selected from the group consisting of diurea compounds, triurea compounds, tetraurea compounds, polyurea compounds, urea-urethane compounds, diurethane compounds and mixtures thereof;
- and
- (B) 0.2 and 5.0 wt %, based on the total weight of the composition, of an ingredient selected from the group consisting of oxidized paraffins, diphenylhydrogen phosphite, hexamethyl phosphoric triamide and mixtures thereof.
Dependencies are inferred from the claim text.