Process for the preparation of ethylene-propylene random copolym

Details Process for the preparation of ethylene-propylene random copolym Process for the preparation of ethylene-propylene random copolym

1979-04-09

1980-08-26

Levin, Stanford M.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 87, 526159, C08F 202, C08F 234, C08F21016

Patent

active

042196337

ABSTRACT:
Random copolymers of ethylene and propylene are prepared by a process comprising contacting under bulk or vapor phase polymerization conditions components comprising (a) a catalyst capable of producing substantially crystalline polypropylene; and (b) ethylene and propylene in an essentially constant ratio of about 0.1 to 1.0 mole percent ethylene to about 99.9 to 99.0 mole percent propylene. The random copolymers produced by this process have high clarity and distribution numbers greater than 90.

REFERENCES:
patent: 3624061 (1971-11-01), Hostetler
patent: 3702352 (1972-11-01), Leibson
patent: 3736307 (1973-05-01), Perry
patent: 3944530 (1976-03-01), Sugita et al.
patent: 4048409 (1977-09-01), Sugita et al.

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