Catalyst component for alpha olefine-polymerizing catalysts and procedure for manufacturing the same
US4780438A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1987 |
| Grant date | Oct 25, 1988 |
| Priority date | — |
| Expiry date | Apr 1, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F10/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A catalyst component for alpha olefine-polymerizing catalysts which comprise an organo-aluminum compound, an external electron donor, and a solid catalyst component obtained when a solid carrier component containing magnesium has reacted with a titanium halide compound, in addition to a procedure for manufacturing the same. The catalyst component is produced by reacting a solid carrier component with a titanium halide compound with or without the presence of an internal electron donor. The solid carrier component is prepared by PA0 (a) dissolving a natural or synthetic mineral containing magnesium and aluminum in hydrochloric acid, PA0 (b) evaporating the solution until dry, PA0 (c) calcinating the obtained salt mixture from the evaporated solution by heating the same at a temperature of about 130.degree.-150.degree. C. to convert the aluminum component into hydroxy form, PA0 (d) dissolving the magnesium component in ethanol, PA0 (e) drying the ethanol solution of the magnesium component with the aid of periodic azeotropic distillation, and PA0 (f) precipitating the solid carrier component from the ethanol solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.