Process for polymerizing .alpha.-olefines

Details Process for polymerizing .alpha.-olefines Process for polymerizing .alpha.-olefines

1974-06-05

1976-04-20

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, 252431R, 526156, 526157, 526210, 526348, 526351, C08F 402, C08F 1006

Patent

active

039519350

ABSTRACT:
Essentially amorphous polyolefines of medium molecular weight are prepared by polymerization of .alpha.-olefines in the presence of a Ziegler supported catalyst. This catalyst consists of the reaction product of the chloride and/or alcoholates of the tetravalent titanium and of an alcoholate and/or a magnesium compound containing hydroxyl groups and of an aluminiumorganic compound containing chlorine, in which the proportion Al : Cl is 4:1 to 0.8:1. The polymerization is carried out at a temperature of from 100.degree. to 160.degree.C.

REFERENCES:
patent: 3676415 (1972-07-01), Diedrich et al.
patent: 3833515 (1974-09-01), Amtmann et al.

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