Process for producing propylene-ethylene block copolymer

Details Process for producing propylene-ethylene block copolymer Process for producing propylene-ethylene block copolymer

1980-09-02

1982-07-13

Michl, Paul R.

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

Synthetic resins

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

525323, C08F29708

Patent

active

043395570

ABSTRACT:
A propylene-ethylene block copolymer is produced in the presence of a catalytic system essentially comprising an organoaluminum compound and a solid titanium trichloride catalytic complex having an atomic ratio of Al to Ti of less than 0.15 and having a complexing agent in two stages of polymerization;

REFERENCES:
patent: 3318976 (1967-05-01), Short
patent: 3358056 (1967-12-01), Renaudo
patent: 3401212 (1968-09-01), Griffin
patent: 3859387 (1975-01-01), Perry
patent: 3873642 (1975-03-01), Jezl
patent: 3970719 (1976-07-01), Edmonds
patent: 4066718 (1978-01-01), Saito

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