Thermoplastic rubbers and process for preparing same

Details Thermoplastic rubbers and process for preparing same Thermoplastic rubbers and process for preparing same

1980-04-30

1982-07-20

Michl, Paul R.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C08F 476

Patent

active

043407048

ABSTRACT:
Thermoplastic rubbers comprising propylene-ethylene copolymers containing from 50% to 90% by weight of propylene and showing, on X-rays examination in the unoriented state, crystallinity of the polypropylene and/or polyethylene type are disclosed.
Also disclosed is a method for preparing the thermoplastic rubbers by polymerizing mixtures of propylene and ethylene in the presence of a catalyst obtained by mixing

REFERENCES:
patent: 3789036 (1974-01-01), Longi
patent: 4013823 (1977-03-01), Longi
patent: 4107413 (1978-08-01), Giannini
patent: 4187196 (1980-02-01), Giannini

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