Process for producing highly crystalline .alpha.-olefinic polyme

Details Process for producing highly crystalline .alpha.-olefinic polyme Process for producing highly crystalline .alpha.-olefinic polyme

1979-08-21

1982-05-11

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, 525247, 526351, C08F 464, C08F 1006

Patent

active

043294405

ABSTRACT:
A process for producing a highly crystalline .alpha.-olefinic polymer in a high yield, which comprises contacting propylene or a mixture of propylene and another .alpha.-olefin with a mixed catalyst system produced by adding a lactone as the third component to a catalyst system consisting essentially of titanium trichloride (1) and a dialkylaluminum halide (2), by which the by-production of the undesired atactic polymer can be decreased.

REFERENCES:
patent: 3149097 (1964-09-01), Coover
patent: 3178401 (1965-04-01), Coover
patent: 3230208 (1966-01-01), Coover

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