Process for neutralizing and deashing polypropylene

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Treating polymer containing material or treating a solid...

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526351, 528489, C08F 602

Patent

active

041973984

ABSTRACT:
Polypropylene is neutralized and deashed by contacting a slurry of the particulate polymer with an alcohol solution of from 1 to 5 milliequivalents of an alkali base, preferably Na or K, excess beyond that needed to neutralize said polymer.

REFERENCES:
patent: 2900373 (1959-08-01), Martin
patent: 3075959 (1963-01-01), Wagener et al.
patent: 3112302 (1963-11-01), Kolling et al.
patent: 3520866 (1970-07-01), Bacskal et al.

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