Amine derivatives as friction modifiers in lubricants
US8778858B2 · kind B2 · utility
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11References
20Claims
0Family size
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Key dates
| Filing date | Feb 11, 2010 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | May 9, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/045
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A composition is provided for use as a friction modifier for an automatic transmission, comprising a long chain hydrocarbyl amine having one or two additional groups on one or two different amine nitrogen atom thereof of the structure —R3-C(=0)X(R4)c. R3 is an alkylene group or a group comprising a group of 1-4 carbon atoms or a chain of 2 to 9 carbon atoms interrupted by one or two nitrogen or oxygen atoms within the chain; X is nitrogen or oxygen, and R4 is a long chain hydrocarbyl group, or H, or —R3-NHR5. The compound does not contain a primary amino group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.