Catalyst component for .alpha.-olefin polymerization

Details Catalyst component for .alpha.-olefin polymerization Catalyst component for .alpha.-olefin polymerization

1983-02-16

1985-08-13

Garvin, Patrick

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Plural component system comprising a - group i to iv metal...

502119, 502127, 502108, 526127, 526142, C08F 464

Patent

active

045350698

ABSTRACT:
A supported type catalyst component for .alpha.-olefin polymerization, having a higher activity and capable of affording a highly stereoregular polymer is provided, which component comprises a solid product (II) obtained by reacting Mg compound(s) of formula MgR.sup.1 R.sup.2 (wherein R.sup.1 is alkyl, aryl, alkoxy or aryloxy and R.sup.2, alkyl, aryl, alkoxy, aryloxy or halogen), with a complex of compound(s) selected from Al halides and Al compounds of formula AlR.sub.n.sup.3 X.sub.3-n (wherein R.sub.3 is alkyl, aryl, alkoxy or aryloxy; X, halogen; 0.ltoreq.n<2) with an organic acid ester; and reacting the resulting solid product (I) (a carrier) with a liquid halogen-containing Ti compound. Preactivation of the solid product (II) with an organoaluminum compound and an .alpha.-olefin affords a catalyst component superior in storage stability and polymerization reproducibility.

REFERENCES:
patent: 4250285 (1981-02-01), Minami et al.
patent: 4252670 (1981-02-01), Caunt et al.
patent: 4295991 (1981-10-01), Wristers
patent: 4301029 (1981-11-01), Caunt et al.
patent: 4309521 (1982-01-01), Sato et al.
patent: 4330651 (1982-05-01), Sakurai et al.

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