Preparation of Ziegler-Natta type catalyst systems

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...

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502103, 502126, 210304, C08F 464

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active

056588402

ABSTRACT:
A process for the preparation of Ziegler-Natta type catalyst systems, containing, as active constituents
a) a titanium-containing solid component, which contains in addition to a compound of titanium at least one electron donor compound, and is present in an inert solvent in the form of a suspension, and, as co-catalyst,
b) an aluminum compound and
c) optionally further electron donor compounds
in which, following the preparation of the titanium-containing solid component a), the inert solvent present in the suspension is removed by first filtering the suspension in a first step, and then removing further solvent from the filtered material in a second step by applying a pressure difference at temperatures of not more than 100.degree. C.

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