Method for purifying polymer

Details Method for purifying polymer Method for purifying polymer

1991-02-13

1993-08-17

Teskin, Fred

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

Synthetic resins

Treating polymer containing material or treating a solid...

528481, 528490, 528497, 528498, 528503, C08F 600

Patent

active

052370488

ABSTRACT:
There is disclosed a method for purifying a polymer by extracting volatile materials contained in the molten polymer. According to the disclosure, a polymer having a very high degree of extraction of volatile materials can be obtained. The polymer obtained by the method of disclosure can meet the severe demands of the market that restricts the concentration of remaining volatile material impurities.

REFERENCES:
patent: 3683511 (1972-08-01), Johnson et al.
patent: 4703105 (1987-10-01), Allada
patent: 4990595 (1991-02-01), Traechkner et al.

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