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US 2025/0154426 A1Published application
Grease composition and method for preparing the same
AssigneesHyundai Motor Company, Kia Corporation, Klueber Lubrication Korea Ltd.
InventorsHyung Seok Kim, Joon Ho Park, Tae Gyun Kim
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Abstract
A grease composition includes a base oil, a thickener, and a styrene-based block copolymer containing ethylene-alpha olefin copolymerization repeating units as a first polymer additive, wherein 1.5% to 15% by weight of the first polymer additive is contained based on a total weight of the grease composition.
Claims18
A grease composition comprising:
- a base oil;
- a thickener;
- and
- a styrene-based block copolymer containing ethylene-alpha olefin copolymerization repeating units as a first polymer additive;
- wherein 1.5% to 15% by weight of the first polymer additive is contained based on a total weight of the grease composition.
2 more elements
A method for preparing a grease composition, the method comprising:
- stirring a mixture of a base oil, a thickener, and a styrene-based block copolymer containing ethylene-alpha olefin copolymerization repeating units as a first polymer additive at a temperature in a range from 130° C. to 180° C.;
- wherein a content of the first polymer additive in the mixture is 1.5% to 15% by weight based on a total weight of the mixture.
Dependencies are inferred from the claim text.