Polyolefin polymerization process, process of producing catalyst, and catalyst
US5206314A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1992 |
| Grant date | Apr 27, 1993 |
| Priority date | — |
| Expiry date | Aug 31, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/904
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polymerization catalyst useful for the polymerization of olefins is prepared by contacting a metal dihalide compound having a metal selected from Group 2 and Group 12 of the Periodic Table and a transition metal compound which is a hydrocarbyloxide of a transition metal selected from Group 4 and Group 5 to thereby form a first catalyst component; contacting the first catalyst component with at least one organoaluminum precipitating agent to form a solid product; and contacting the solid product with an ester and then an activating agent to form a catalyst. Other aspects of the invention include a catalyst produced by the above described process and a polymerization process employing the thus produced catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.