(Meth) acrylate copolymers having excellent low temperature properties
AssigneeEthyl Corporation
InventorsGregory Peter Liesen, Sanjay Srinivasan, Larry Dale Grina
Life of this patent
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Abstract
Non-dispersant poly (meth) acrylate copolymers comprising from about 5 to about 15 weight percent butyl methacrylate; from about 70 to about 90 weight percent of a C10-C15 alkyl (meth) acrylate; and from about 5 to about 10 weight percent of a C16-C30 alkyl (meth) acrylate provide excellent low temperature properties to lubricating oils.
Claims25
A poly (meth) acrylate copolymer comprising units derived from:
- (A) from about 5 to about 15 weight percent butyl methacrylate;
- (B) from about 70 to about 90 weight percent of a C10-C15 alkyl (meth) acrylate;
- and
- (C) from about 5 to about 10 weight percent of a C16-C30 alkyl (meth) acrylate, wherein the copolymer is a non-dispersant poly (meth) acrylate copolymer.
A poly (meth) acrylate copolymer comprising the reaction product(s) of:
- (A) from about 5 to about 15 weight percent butyl methacrylate;
- (B) from about 70 to about 90 weight percent of a C10-C15 alkyl (meth) acrylate;
- and
- (C) from about 5 to about 10 weight percent of a C16-C30 alkyl (meth) acrylate, wherein the copolymer is a non-dispersant poly (meth) acrylate copolymer.
A star branched poly (alkyl) methacrylate copolymer wherein the arms of the star branched copolymer comprise the anionic polymerization reaction product(s) of:
- (A) from about 5 to about 15 weight percent butyl methacrylate;
- (B) from about 70 to about 90 weight percent of a C10-C15 alkyl (meth) acrylate;
- and
- (C) from about 5 to about 10 weight percent of a C16-C30 alkyl (meth) acrylate, wherein the copolymer is a non-dispersant poly (meth) acrylate copolymer.
Dependencies are inferred from the claim text.