Catalyst for the polymerization of olefins based upon magnesium and transition metal
US4438019A · kind A · utility
3Cited by
5References
1Claims
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Assignee
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Key dates
| Filing date | Mar 10, 1981 |
| Grant date | Mar 20, 1984 |
| Priority date | — |
| Expiry date | Mar 10, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F10/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention is addressed to solid catalysts comprising essentially compounds of magnesium and of transition metals selected from the sub-groups IVa, Va and VIa of the periodic table, applicable to the polymerization of olefins and particularly ethylene, in which the catalyst is obtained by first preparing a solid compound of magnesium, monohalogenated hydrocarbon and halogen and/or organic derivatives of the transition metal in a state of valency of at least 4 and then reacting the solid compound of magnesium and transition metal with an oxidizing compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.