Multistage copolymerization process

Details Multistage copolymerization process Multistage copolymerization process

1986-06-18

1988-04-26

Briggs, Sr., Wilbert J.

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

Synthetic resins

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

525 53, 525243, 525323, C08F29708, C08F 800

Patent

active

047405511

ABSTRACT:
The present invention relates to a multistage, continuous process for the preparation of propylene-ethylene impact copolymers comprising the use of a plug flow pipeline reactor for homopolymerizing propylene, a gas-phase fluidized bed reactor for additional propylene homopolymerization, and a gas-phase fluidized bed reactor for propylene/ethylene copolymerization.

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"Toughened Plastics", C. B. Bucknall, Applied Sci. Publishers Ltd., 1977, pp. 87-90.
T. G. Heggs in Block Copolymers, D. C. Allport & W. H. James (eds.), Applied Sci. Publishers Ltd., 1973, chap. 4.

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