Catalyst and process for the polymerization of olefins

Details Catalyst and process for the polymerization of olefins Catalyst and process for the polymerization of olefins

1981-01-08

1982-03-02

Smith, Edward J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

525247, 526139, 526150, 526351, 252429B, C08F 464, C08F 1006

Patent

active

043178987

ABSTRACT:
A novel catalyst and process for producing highly-crystalline polypropylene or pure block or terminal block types of copolymers of propylene and ethylene or propylene and another alpha-olefin in excellent yields which coproduce minor amounts of low-molecular-weight and, particularly, amorphous polymers. The catalyst comprises an aluminum alkyl compound, titanium trichloride, a sterically-hindered cyclic amine and an organotin sulfide. This novel catalyst and process are useful in polymerization techniques which use a polymerization medium or those in which the condensed monomer is polymerized from the liquid phase or those in which polymerization is accomplished from monomer substantially in the vapor phase.

REFERENCES:
patent: 3116274 (1963-12-01), Boehm et al.
patent: 3216987 (1965-11-01), Price
patent: 3240773 (1966-03-01), Boor
patent: 3449263 (1969-06-01), Walt
patent: 3639375 (1972-02-01), Staiger et al.
patent: 3926928 (1975-12-01), Karayannis et al.
patent: 3950268 (1976-04-01), Karayannis et al.

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