Lubricant composition comprising hydroxycarboxylic acid derived friction modifier
US11041137B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2014 |
| Grant date | Jun 22, 2021 |
| Priority date | — |
| Expiry date | Oct 23, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/25
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a lubricant composition containing a base stock and at least 0.01 wt % of a friction reducing additive which is a compound of the Formula (I): R1[(AO)n—R2]m (I) wherein R1 is the residue of a group having at least 2 active hydrogen atoms; m is at least 2; AO is an alkylene oxide residue; each n is independently from 0 to 100; and each R2 is independently H or R3, where each R3 is independently a residue of a polyhydroxyalkyl or polyhydroxyalkenyl carboxylic acid, a residue of a hydroxyalkyl or hydroxyalkenyl carboxylic acid and/or a residue of an oligomer of the hydroxyalkyl or hydroxyalkenyl carboxylic acid; and on average at least 0.5 of R2 groups are R3. The lubricant composition is suitable for use in an engine oil, a hydraulic oil or fluid, a gear oil and/or a metal-working fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.