Process for producing olefin polymer

Details Process for producing olefin polymer Process for producing olefin polymer

1993-08-02

1996-11-19

Smith, Edward J.

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

Synthetic resins

Polymerizing in two or more physically distinct zones

502103, 525268, 526119, 526352, C08F 4642, C08F 1002

Patent

active

055764002

ABSTRACT:
A process for producing an olefin polymer comprising polymerizing an olefin or olefins in the presence of a catalyst system, in which the catalyst system comprises of (A) a hydrocarbon-insoluble solid catalyst component obtained by treating a uniform hydrocarbon solution containing (a) an magnesium compound, e.g., a dialkoxymagnesium, (b) an titanium compound, e.g., a titanium tetraalkoxide, and (c) a polyalkyltitanate represented by formula (I): ##STR1## wherein R.sup.3 's, which may be the same or different, each represent an alkyl group, an aryl group, or a cycloalkyl group; and p represents an integer of from 2 to 20, with a halogenating agent and (B) an organoaluminum compound. The resulting olefin polymer has broad molecular weight distribution, high melt tension, and high melt elasticity and is freed of fish eye by kneading under ordinary conditions.

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