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US RE37,105 E1Granted
Lubricants containing ashless antiwear-dispersant additive having viscosity index improver credit
AssigneeUniroyal Chemical Company, Inc.
InventorsJohn R. Baranski, Cyril A. Migdal
Life of this patent
Estimating the term…
Abstract
A graft copolymer is disclosed. The copolymer is prepared by the interpolymerization of a mixture of monomers comprising ethylene, a C3 to C12 alpha monoolefin, and a polyene being a member selected from the group consisting of non-conjugated dienes and trienes. Grafted to the copolymer is a 2-mercapto-1,3,4-thiadiazole moiety. Lubricating oil additives and lubricating oils comprising the graft copolymer are also disclosed.
Claims29
A graft copolymer comprising:
- a copolymer prepared by the interpolymerization of a mixture of monomers comprising:
- ethylene,
- a C3-C12 alpha monoolefin, and a polyene being a member selected from the group consisting of non-conjugated dienes and trienes;
- having grafted thereon:
- a 2-mercapto-1,3,4-thiadiazole moiety.
2 more elements
A lubricant additive comprising a graft copolymer comprising:
- a copolymer prepared by the interpolymerization of a mixture of monomers comprising:
- ethylene,
- a C3-C12 alpha monoolefin, and a polyene being a member selected from the group consisting of non-conjugated dienes and trienes;
- having grafted thereon:
- a 2-mercapto-1,3,4-thiadiazole moiety.
2 more elements
A lubricant comprising a lubricant additive comprising a graft copolymer comprising:
- a copolymer prepared by the interpolymerization of a mixture of monomers comprising:
- ethylene,
- a C3-C12 alpha monoolefin, and a polyene being a member selected from the group consisting of non-conjugated dienes and trienes;
- having grafted thereon:
- a 2-mercapto-1,3,4-thiadiazole moiety.
2 more elements
Dependencies are inferred from the claim text.