Process for preparing polyolefins

Details Process for preparing polyolefins Process for preparing polyolefins

1975-08-13

1977-05-10

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, 526125, 526348, 526352, C08F 402, C08F 1002

Patent

active

040229580

ABSTRACT:
The present invention relates to a process for preparing polyolefins using an improved polymerization catalyst. According to the invention, there is provided a process for preparing polyolefins by polymerizing or copolymerizing olefins using a catalyst prepared from a component with a titanium compound and/or a vanadium compound supported on a solid carrier and an organoaluminum compound and/or an organozinc compound, said solid carrier comprising a member selected from the group consisting of a reaction product A obtained by reacting (1) an organic carboxylate salt of magnesium and (2) an aluminum compound represented by the general formula Al(OR).sub.3 wherein R may be same as or different from each other and each R is an organic radical containing from 1 to 20 carbon atoms under such a condition that the aluminum compound is present in excess of a (2):(1) molar ratio of at least 1.6:1 and a reaction product B obtained by treating said reaction product A with a halogenating agent.

REFERENCES:
patent: 3642760 (1972-02-01), Baekelmans et al.
patent: 3676415 (1972-07-01), Diedrich et al.

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