Preparation of titanium trichloride polymerization catalyst comp

Details Preparation of titanium trichloride polymerization catalyst comp Preparation of titanium trichloride polymerization catalyst comp

1974-12-30

1976-09-07

Holler, Alan

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252429A, 423 80, 423 85, 423492, 526169, C08F 464, C08F11006, B01J 3102, C01G 2302

Patent

active

039793729

ABSTRACT:
It is known to prepare highly active catalyst components for a Ziegler polymerization catalyst by reduction of titanium tetrachloride with an aluminum alkyl. An improvement in the preparation of such catalysts which leads to production of highly sterospecific as well as highly active catalyst components consists of including in the preparation the step of washing the reaction mixture which contains the desired TiCl.sub.3 composition with an aliphatic hydrocarbon at temperatures above 40.degree.C and separating the washed solids from the wash liquid at a temperature above 40.degree.C. A heat treatment above 80.degree.C precedes, accompanies, or follows the washing and separation step. The washing step may be carried out in a single or in multiple stages.

REFERENCES:
patent: 3058960 (1962-10-01), Stewart
patent: 3562239 (1971-02-01), de Jong et al.
patent: 3640987 (1972-02-01), Phung et al.
patent: 3769233 (1973-10-01), Hermans et al.
patent: 3825524 (1974-07-01), Wada et al.
patent: 3857795 (1974-12-01), Van Der Bend et al.

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