Product of amines with hydroxy acid as friction modifiers suitable for automatic transmission fluids
US8148306B2 · kind B2 · utility
9Cited by
14References
15Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 11, 2006 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Apr 20, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2060/14
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Compositions comprising an oil of lubricating viscosity; an amide represented by the formula R1R2N—C(O)R3 wherein R1 and R2 are hydrocarbyl groups of at least 6 carbon atoms and R3 is a hydroxyalkyl group of 1 to 6 carbon atoms or a group formed by the condensation of said hydroxyalkyl group, through a hydroxyl group thereof, with an acylating agent; a nitrogen-containing dispersant; and a phosphorus-containing compound are suitable for lubricating a transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.