Organo-Al-chloride catalyzed poly-n-butenes process
US4952739A · kind A · utility
54Cited by
12References
39Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 26, 1988 |
| Grant date | Aug 28, 1990 |
| Priority date | — |
| Expiry date | Oct 26, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F10/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Poly-n-butene is prepared from a mixed C.sub.4 hydrocarbon feedstream containing less than about 5 wt. % isobutylene using an organo-aluminum chloride-HCl catalyst system wherein the HCl is introduced separately into the feedstream to form organochloride in the feedstream. Polymer product having a very narrow molecular weight distribution is obtained over the M.sub.n range of 300 to 900. Detergents derived from this poly-n-butene exhibit substantially improved performance in lubricating oil compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.