Process for the polymerization of olefins
US5432243A · kind A · utility
7Cited by
2References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 15, 1994 |
| Grant date | Jul 11, 1995 |
| Priority date | — |
| Expiry date | Sep 15, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F10/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Olefin polymerization is conducted with a Ziegler-Natta catalyst in which unreacted monomer is recycled to the reactor. The recycle line contains a supported nickel or nickel oxide to purify the unreacted monomer before its return to the reactor, and results in improved catalyst activity and more control over physical properties of the product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.