Process for the preparation of a polypropylene molding compositi

Details Process for the preparation of a polypropylene molding compositi Process for the preparation of a polypropylene molding compositi

1984-08-31

1986-03-18

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...

525268, 525270, 525323, C08F29708

Patent

active

045769940

ABSTRACT:
A polypropylene molding composition with a good hardness and good impact strength at low temperatures is formed by two-stage polymerization of propylene and ethylene in liquid propylene in the presence of a special supported catalyst.

REFERENCES:
patent: 4128606 (1978-12-01), Furutachi et al.
patent: 4308357 (1981-12-01), Kaus et al.

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