Procatalyst component based on a transition metal compound on a carrier of magnesium chloride and manganese halide
US5663248A · kind A · utility
2Cited by
6References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1994 |
| Grant date | Sep 2, 1997 |
| Priority date | — |
| Expiry date | Jun 1, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F110/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Olefin polymerization catalysts the procatalyst component of which comprises a transition-metal compound on a magnesium chloride support material are known to all. Now the procatalyst component has been improved by incorporating a manganese (II) halide into it at a rate of at minimum approx. 0.1% and at maximum approx. 50% of the total molar amount of magnesium chloride and manganese (II) halide. The new polymerization catalyst has, among other things, the excellent special property that it yields a polyolefin with a broad molecular weight distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.