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US 11,359,042 B2Granted
Antiwear copolymers and lubricant compositions
AssigneeEvonik Operations GmbH
InventorsSofia Sirak, Dmitriy Shakhvorostov, Ines Berwing, Denise Bingel
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Abstract
The present invention relates to copolymers, to a method for the preparation of these copolymers, to the use of these copolymers for reducing wear in a lubricant composition, to lubricant compositions comprising these copolymers, and to the use of these lubricant compositions as an automatic transmission fluid, a continuously variable transmission fluid, an engine oil, a gear oil, or a hydraulic oil.
Claims16
A copolymer, comprising:
- a) 0.1 to 20 wt.-%, based on a total weight of the copolymer, of units derived from one or more compounds of formula (I)
- wherein R is H or CnH2n+1, n=1 to 6, and x=6 to 10;
- and
- b) 60 to 99.9 wt.-%, based on the total weight of the copolymer, of units derived from one or more alkyl (meth)acrylates, wherein each of the one or more alkyl (meth)acrylates independently has an alkyl group comprising 1 to 40 carbon atoms,
- wherein the copolymer is not a graft copolymer.
2 more elements
Dependencies are inferred from the claim text.