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US 11,034,909 B2Granted
Lubricant polymers
AssigneeTotal Marketing Services
InventorDenis Lançon
Life of this patent
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Abstract
Lubricant compositions include copolymers of monomers selected from C6-C10 alkyl methacrylate monomers, and monomers selected from C10-C18 alkyl methacrylate monomers, and a base oil or comprising a copolymer obtained by combining at least monomers selected from C6-C10 alkyl methacrylate monomers, and monomers selected from C10-C18 alkyl methacrylate monomers in a mixture and co-polymerizing the monomers. The methods for the preparation of the lubricant compositions, and lubricants uses.
Claims10
A lubricant composition comprising:
- from 0.01% to 10% by weight, relative to the total weight of the lubricant composition, of a copolymer of alkyl methacrylate monomers, wherein the alkyl methacrylate monomers consist essentially of:
- a. Monomers (A) selected from C6-C10 alkyl methacrylate monomers, and
- b. Monomers (B) selected from C10-C18 alkyl methacrylate monomers, the Monomers (B) comprising a mixture of about 0.1 to 2% by weight of C10 alkyl methacrylate, about 50 to 80% by weight of C12 alkyl methacrylate, about 15 to 40% by weight of C14 alkyl methacrylate, about 2 to 12% by weight of C16 alkyl methacrylate and about 0.1 to 1% by weight of C18 alkyl methacrylate based on a total weight of the mixture,
- wherein the copolymer is obtained by combining the Monomers (A) and the Monomers (B) in a mixture consisting essentially of the Monomers (A) and the Monomers (B) and co-polymerizing the monomers, the mass ratio of the Monomers (B) to the Monomers (A) being from 90:10 to 80:20, and
- wherein the copolymer has an average Root Mean Square Radius of Gyration (Rg), as measured by Hydrodynamic Column Chromatography-Multi Angle Light Scattering (HCC-MALS), of from 100 to 200 nm, and
- a base oil.
3 more elements
Dependencies are inferred from the claim text.