Manufacture of synthetic lubricant additives from low molecular weight olefins using boron trifluoride catalysts
US4413156A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1982 |
| Grant date | Nov 1, 1983 |
| Priority date | — |
| Expiry date | Apr 26, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M2205/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An improved process for the manufacture of synthetic lubricant additives from olefins having two or three carbon atoms is described. The low molecular weight olefins are converted to internal olefins having 9 to 24 carbon atoms via isomerization and disproportionation. The process utilizes boron trifluoride catalysis with a promoter to produce from the C.sub.9 -C.sub.24 internal olefins 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 almost exclusively in the second step of the method of this invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.