Olefin polymerization catalysts
US5145922A · kind A · utility
1Cited by
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5Claims
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Key dates
| Filing date | Jul 26, 1991 |
| Grant date | Sep 8, 1992 |
| Priority date | — |
| Expiry date | Jul 26, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F10/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for preparing an olefin polymerization catalyst which comprises halogenating a magnesium-di-(3- or 4-halo- or 3- or 4-C.sub.1 to C.sub.8 alkoxy-phenoxide) with a halide of tetravalent titanium in the presence of a halohydrocarbon, recovering the solid reaction product from the reaction mixture and combining the solid reaction product with an organo aluminium compound and an electron donor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.