Method for removing alkali metal compound from crude high-molecu

Details Method for removing alkali metal compound from crude high-molecu Method for removing alkali metal compound from crude high-molecu

1990-11-20

1992-03-24

Kight, III, John

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

Synthetic resins

Treating polymer containing material or treating a solid...

526 88, 526123, C08F 616

Patent

active

050989936

ABSTRACT:
A method for purifying a crude high-molecular weight substance containing an alkali metal compound by extracting the alkali metal compound with water is disclosed, which comprises stirring a mixture comprising said crude high-molecular weight substance and water in a high-speed stirring tank to extract the alkali metal compound into an aqueous phase and separating the high-molecular weight substance phase and the aqueous phase from each other by continuous centrifugation. An alkali metal compound as an impurity can be efficiently removed with small-sized equipment in a short time.

REFERENCES:
patent: 4874588 (1989-10-01), Sortwell et al.

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