Method for polymerizing .alpha.-olefin

Details Method for polymerizing .alpha.-olefin Method for polymerizing .alpha.-olefin

1980-05-06

1981-10-27

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252429B, 526124, 526125, 526127, 526151, 526351, C08F 402, C08F 1006

Patent

active

042974631

ABSTRACT:
Poly-.alpha.-olefin having an excellent H. I. is produced with an excellent yield by bringing, in the presence of an organic acid ester, a feed, containing at least one .alpha.-olefin having 3 or more carbon atoms, into contact with a catalyst which comprises (A) a solid catalytic ingredient prepared (a) by reacting a Grignard compound with an aluminium halide-tetraalkoxysilane reaction product, (b) bringing the resultant reaction product into a first contact with titanium tetrahalide, (c) treating the resultant titanium-containing solid product with an organic acid ester, and, finally, (d) bringing the treated solid product into a second contact with titanium tetrahalide, and; (B) another catalytic ingredient consisting of a trialkyl aluminium.

REFERENCES:
patent: 4220554 (1980-09-01), Scata et al.
patent: 4242479 (1980-12-01), Yokata et al.

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