Manufacture of a titanium-containing component for catalysts of the Ziegler-Natta type
US4229318A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1978 |
| Grant date | Oct 21, 1980 |
| Priority date | — |
| Expiry date | Aug 23, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/906
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the manufacture of a titanium-containing component of a catalyst for the Ziegler-Natta polymerization of .alpha.-monoolefins, by (a) milling a titanium-containing compound of the general formula TiCl.sub.3.nAlCl.sub.3 (where n is a number from 0.01 to 1) with (b) an ether of a particular type or an ester of a particular type, wherein (1) a vibratory ball mill giving a relatively high milling acceleration is used, (2) the mill is first charged with the titanium-containing compound (a), after which it may or may not be run for a certain period, thereafter (3) while milling, the amount of the ether or ester (b) which corresponds to a particular molar ratio of aluminum in the titanium-containing compound (a) to ether or ester (b) is added continuously or in small portions, then (4) the batch is milled for a certain period, after which (5) the product obtained from stage (4) may or may not be washed with a hydrocarbon and dried, and following which (6) the product obtained from stage (4) or (5) may or may not be milled for a certain period at a low temperature, next (7) the product obtained from stage (4), (5) or (6) is brought together with a liquid silicon compound of a …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.