Manufacture of homopolymers and copolymers of .alpha.-monoolefin

Details Manufacture of homopolymers and copolymers of .alpha.-monoolefin Manufacture of homopolymers and copolymers of .alpha.-monoolefin

1979-09-12

1981-08-04

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, 526138, 526159, 526351, C08F 466, C08F 1006

Patent

active

042823412

ABSTRACT:
A process for the manufacture of homopolymers and copolymers of .alpha.-monoolefins by polymerizing the monomer or monomers at relatively low temperatures under relatively low pressures by means of a Ziegler-Natta catalyst comprising (I) a titanium chloride component and (II) an aluminumalkyl component, wherein the titanium chloride component (I) employed is obtained by exposing a conventional catalyst component consisting, or substantially consisting, of titanium trichloride or titanium tetrachloride, to a carbon dioxide atmosphere under specific conditions. Catalysts obtained from titanium chloride components (I) which have been treated in this way exhibit a relatively long induction period.

REFERENCES:
patent: 4130699 (1978-12-01), Hoff et al.
Raff et al., Crystallin Olefin Polymers, vol. XX, Part I, Interscience Publish, N.Y. (1965) p. 371.

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