Biodegradable pour point depressants for industrial fluids derived from biodegradable base oils
US5658864A · kind A · utility
8Cited by
7References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 24, 1995 |
| Grant date | Aug 19, 1997 |
| Priority date | — |
| Expiry date | Mar 24, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention involves the use of biodegradable polyalpha olefins ("PAOs") to treat biodegradable industrial fluids, such as lubricants, hydraulic fluids, fuel oils, and the like, to: (a) reduce their pour point; (b) improve their oxidation stability performance; and/or, (c) improve their hydrolytic stability performance. A preferred industrial fluid is mixture of vegetable oil and branched alkane where the average molecular weight of the alkane is about 200-400, and the alkane additionally has a sufficient degree of branching to have a pour point of about -25.degree. C. or lower.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.