The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 21, 1980
Filed:
Aug. 23, 1978
BASF Aktiengesellschaft, , DE;
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 particular type or a liquid tin compound of a particular type (these compounds acting as promoters) and the batch is left for a certain period and is then separated into a solid-phase product and into a liquid-phase product, and thereafter (8) the solid-phase product obtained from stage (7) is washed with a hydrocarbon or with one of the promoters mentioned under (7) and is dried, following which (9) the product obtained from stage (8) may or may not be milled for a certain period at a low temperature. Using the titanium-containing catalyst components thus obtainable makes it possible to produce polymers, having a high stereoregularity, in high specific yields.