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US 7,732,390 B2Granted
Phenolic dimers, the process of preparing same and the use thereof
AssigneeAfton Chemical Corporation
InventorsAbbas Kadkhodayan, Ju-Fu Shiau, Joe S. Bradley, Cathy C. Devlin, Charles A. Passut
Life of this patent
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Abstract
This invention relates to detergents, lubricating oil additives and compositions, and methods of preparing detergents, lubricating oil additives and compositions. More specifically, this invention relates to novel phenolic dimers.
Claims37
A compound comprising Formula I:
- wherein:
- R1 and R3 independently represent a methyl group;
- R2 and R4 are each a polyisobutyl;
- and
- n is 1-3;
- provided that each of R2 and R4 is not tert-dodecyl when each of R1 and R3is methyl and n is 1.
3 more elements
A compound, or a salt form thereof, comprising Formula III:
- wherein:
- R7 and R9 independently represent a methyl group;
- R8 and R10 independently represent a hydrocarbyl group;
- M is an alkaline earth metal;
- and
- n is 1-3.
3 more elements
Dependencies are inferred from the claim text.