Hydrocarbon base oil for lubricants with very high viscosity index
US6599864B1 · kind B1 · utility
34Cited by
8References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 19, 2002 |
| Grant date | Jul 29, 2003 |
| Priority date | — |
| Expiry date | Jun 19, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M2203/102
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention concerns a novel hydrocarbon base oil for lubricants, having a viscosity index not less than 130, comprising mainly long isoparaffinic hydrocarbon chains, branched over several carbon atoms. The invention is characterized in that said chains comprise a number of carbon atoms greater than 25 and have a ratio of the number of substituents consisting of at least two carbon atoms over the number of methyl-type substituents, not less than 0.9.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.