Semi-synthetic lubricating oil composition
US4420647A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1982 |
| Grant date | Dec 13, 1983 |
| Priority date | — |
| Expiry date | Apr 26, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2020/01
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A synthetic lubricating oil composition comprising a major portion of a synthetic lubricant component or a mixture of a synthetic lubricant component and a hydrocarbon mineral base oil and a minor portion of various additive components is described. The synthetic lubricant component is manufactured from internal olefins. The process for making the synthetic lubricant component utilizes boron trifluoride catalysis with a promoter to produce oligomer mixtures that have surprisingly low viscosities at low temperatures and surprisingly high viscosity indexes as compared with the oligomers found in other methods. It is important that internal olefins be used predominantly to make the oligomers. Alpha olefins make up the balance of the olefins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.