Amine derivatives as friction modifiers in lubricants
US8501674B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Feb 11, 2010 |
| Grant date | Aug 6, 2013 |
| Priority date | — |
| Expiry date | Jun 29, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/042
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A composition useful for lubricating an automatic transmission comprises an oil of lubricating viscosity and a hydrocarbyl amine with a hydrocarbyl group of 12 to 22 carbon atoms and having one or two additional groups of the structure —R3—NHC(O)R4, wherein R3 is an alkylene group of 1 to 4 carbon atoms and R4 is a hydrocarbyl group of 4 to 22 carbon atoms, or a nitrogen-containing heterocyclic group, or an aminoalkyl group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.