Preparation of propylene-ethylene copolymers

Details Preparation of propylene-ethylene copolymers Preparation of propylene-ethylene copolymers

1993-02-25

1994-09-06

Jagannathan, Vasu S.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525268, 525247, 525323, 526125, 526138, C08F 476, C08F21002, C08F21006

Patent

active

053448855

ABSTRACT:
Propylene-ethylene copolymers are obtained by two-stage polymerization from the gaseous phase in an agitated fixed bed by means of a Ziegler-Natta catalyst system that contains in addition to a titanium-containing solid component also an aluminum compound as co-catalyst, wherein as Ziegler-Natta catalyst system a system is used which, following the reaction of the titanium-containing solid component with the co-catalyst, is deactivated by reaction with carbon dioxide. The copolymers are used for producing fibers, films and moldings.

REFERENCES:
patent: 4454299 (1984-06-01), Schweier et al.
patent: 4455405 (1984-06-01), Jaggard et al.
patent: 4921920 (1990-05-01), Collomb-Ceccarini et al.
patent: 5037908 (1991-08-01), Tachikawa et al.
patent: 5147928 (1992-09-01), Kerth et al.

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