Olefin polymerization catalyst subjected to preliminary polymeri

Details Olefin polymerization catalyst subjected to preliminary polymeri Olefin polymerization catalyst subjected to preliminary polymeri

1989-09-14

1991-05-14

Garvin, Patrick P.

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

Catalyst or precursor therefor

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

502108, 502121, 502122, 502123, 502124, 502125, 502126, 502127, 502134, 526125, C08F 4654

Patent

active

050156128

ABSTRACT:
An olefin polymerization catalyst component subjected to successive preliminary polymerization treatment using each of a straight chain alpha-olefin having 2 to 5 carbon atoms and 3-methyl-1-butene; an olefin polymerization catalyst using the olefin polymerization catalyst component; a process for polymerizing olefin(s) which comprises polymerizing or copolymerizing olefin(s) in the presence of the olefin polymerization catalyst; and a film and an injection-molded article of polypropylene which is prepared by the process are also provided.

REFERENCES:
patent: 4295991 (1981-10-01), Wristers
patent: 4780443 (1988-10-01), Matsuura et al.
patent: 4871705 (1989-10-01), Hoel

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