Process for producing .alpha.-olefin polymers

Details Process for producing .alpha.-olefin polymers Process for producing .alpha.-olefin polymers

1983-07-21

1985-08-06

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

502108, 502121, 502123, 502125, 502126, 502127, 526 65, 526116, 526119, 526122, 526127, 526139, 526141, 526142, 526348, 526351, 526352, 5263486, 526901, 526902, 526904, C08F 464, C08F 1006

Patent

active

045337055

ABSTRACT:
A process for producing .alpha.-olefin polymers having high crystallinity and good particle form, with a high yield is provided. The polymerization therefor is carried out in the presence of a preactivated catalyst suitable particularly to gas phase polymerization or gas phase polymerization following slurry or bulk polymerization.
The catalyst is prepared by reacting a reduction solid prepared by reducing TiCl.sub.4 with an organoaluminum compound, with an electron donor and an electron acceptor to obtain a solid product, and

REFERENCES:
patent: 4136243 (1979-01-01), Applegard et al.
patent: 4210729 (1980-07-01), Hermans et al.
patent: 4235747 (1980-11-01), Leung
patent: 4309521 (1982-01-01), Sato et al.

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