Friction modifiers for improved anti-shudder performance and high static friction in transmission fluids
US7381691B2 · kind B2 · utility
4Cited by
22References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2003 |
| Grant date | Jun 3, 2008 |
| Priority date | — |
| Expiry date | Jul 26, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/25
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A fluid composition of (a) a friction modifier derived from the reaction of a carboxylic acid or a reactive equivalent thereof with an aminoalcohol, the friction modifier containing at least two hydrocarbyl groups; and (b) a dispersant other than a species of (a), provides good friction properties to an automatic transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.