Crystalline polyolefins and production thereof

Details Crystalline polyolefins and production thereof Crystalline polyolefins and production thereof

1971-12-20

1977-04-26

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, 260878B, 526348, 526351, 526906, C08F 466, C08F 1006

Patent

active

040202640

ABSTRACT:
Crystalline polyolefins of high molecular weight and high crystallinity are produced in high yields by polymerizing an olefin in the presence of a catalytic system comprising a combination of an organoaluminum compound and a modified titanium composition which has been prepared by milling together a halogen compound of titanium of a valence lower than the maximum valence (e.g. titanium trichloride) and an .alpha., .beta.-unsaturated carboxylate ester.

REFERENCES:
patent: 3622552 (1971-11-01), Fukuda et al.
patent: 3639375 (1972-02-01), Staizer et al.

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