Polymerization catalysts

Details Polymerization catalysts Polymerization catalysts

1977-12-02

1982-06-08

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, 526141, 526351, C08F 464, C08F 1006

Patent

active

043340474

ABSTRACT:
Improved catalysts are disclosed for producing highly crystalline alpha-olefin polymers and highly crystalline copolymers of an alpha-olefin with ethylene or other olefins. Such catalysts can reduce the amount of coproduced amorphous polymer formed without substantial adverse effect on polymerization yield. These novel catalysts involve improving an alkylaluminum component-titanium chloride catalyst by using such catalyst in combination with effective amounts of sulfur dioxide and certain amines. Such catalyst compositions are useful in slurry polymerization, bulk polymerization and, particularly, vapor phase polymerization.

REFERENCES:
patent: 3219648 (1965-11-01), Hill
patent: 3984350 (1976-10-01), Karayannis et al.
patent: 4072809 (1978-02-01), Rogan
Boor, Journal of Polymer Science, Pt. A, vol. 3, (1965), pp. 995-1012.

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