Zirconium-titanium catalyzed olefin polymerization

Details Zirconium-titanium catalyzed olefin polymerization Zirconium-titanium catalyzed olefin polymerization

1981-05-22

1983-08-02

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252429C, 526119, 526352, C08F 402, C08F 1000

Patent

active

043967477

ABSTRACT:
Olefins such as ethylene can be polymerized in high productivities using a catalyst system wherein one catalyst component comprises a precipitated complex of zirconium tetrahydrocarbyloxide and/or titanium tetrahydrocarbyloxide and dihydrocarbylmagnesium. The productivity of the preferred catalyst containing both zirconium and titanium has been found to be substantially higher than the productivity of those catalysts obtained from either only Zr(OR').sub.4 or only Ti(OR").sub.4 and second catalyst component comprises at least one organometallic compound of a metal selected from the Groups I-III of the Mendeleev Periodic Table.

REFERENCES:
patent: 4109071 (1978-08-01), Berger et al.
patent: 4115319 (1978-09-01), Scata et al.
patent: 4135046 (1979-01-01), Harris et al.
patent: 4218339 (1980-08-01), Zucchini et al.
patent: 4310648 (1982-01-01), Shipley et al.

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