Lubricating oil composition
US4891145A · kind A · utility
7Cited by
39References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1986 |
| Grant date | Jan 2, 1990 |
| Priority date | — |
| Expiry date | Jan 29, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M2209/109
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention concerns a lubricating oil containing less than 3 wt. % of a mixture of (1) a lubricating oil pour depressant and (2) a polyoxyalkylene ester, ether, ester/ether or mixture thereof containing one or more C.sub.10 to C.sub.30 alkyl groups and polyoxyalkylene glycol group of molecular weight 100 to 5000, the alkylene group of said polyoxyalkylene glycol containing from 1 to 4 carbon atoms. The pour depressant can for example be a vinyl acetate copolymer, a polyalkylacrylate, a polyalkylmethacrylate or an esterified olefin/maleic anhydride copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.