Components and catalysts for the polymerization of olefins
US4904628A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jan 28, 1988 |
| Grant date | Feb 27, 1990 |
| Priority date | — |
| Expiry date | Jan 28, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F110/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Catalysts for the polymerization of alpha-olefins, which comprise the product of the reaction between: PA1 (a) a metallorganic compound of Al; PA1 (b) an electron-donor compound reactive towards MgCl.sub.2 but which is not completely complexed with AlEt.sub.3, at the equivalent point of a potentiometric titration under standard conditions; PA1 (c) a solid comprising a halogenated Ti compound and an electron-donor belonging to particular classes of compounds and being extractable with AlEt.sub.3 for at least 70% by mols from the solid, the surface area of which after extraction is higher than 20 m.sup.2 /g. The present invention refers to new supported components of catalysts for the polymerization of olefins CH.sub.2 .dbd.CHR, in which R is an alkyl with 1-4 carbon atoms or an aryl, and of mixtures of such olefins with each other and/or with ethylene, and to the catalysts obtained from such components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.