Process for separating isotactic and atactic polypropylenes

Details Process for separating isotactic and atactic polypropylenes Process for separating isotactic and atactic polypropylenes

1979-01-26

1981-03-17

Levin, Stanford M.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528351, C08F 600

Patent

active

042568749

ABSTRACT:
Isotactic and atactic polypropylene of acceptable purity are obtained by contacting the polymerized polymer with a mixture of hydrocarbon, alcohol, organic acid and diketone.

REFERENCES:
patent: 3125560 (1964-03-01), Rose
patent: 3219647 (1965-11-01), Dietz
patent: 3281399 (1966-10-01), Renaldo et al.
patent: 3285899 (1966-11-01), Houser et al.
patent: 3328373 (1967-06-01), Tazewell et al.
patent: 3342794 (1967-09-01), Buchanan
patent: 3499880 (1970-03-01), Kutner
patent: 3661884 (1972-05-01), Shell et al.
patent: 3709850 (1973-01-01), Harrison et al.
patent: 3733314 (1973-05-01), Marwil et al.

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