Purification of polycarbonate with extractant/swelling agent and

Details Purification of polycarbonate with extractant/swelling agent and Purification of polycarbonate with extractant/swelling agent and

1988-05-31

1990-01-09

Anderson, Harold D.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528196, 528483, 528495, 528497, C08G 6362

Patent

active

048929310

ABSTRACT:
By adding a swelling agent which does not dissolve solid polymers to plastics granulates, the morphology is extended without product damage to such as extent that residual constituents can be quickly removed down to a few ppm by diffusive transport and subsequent separation of the swelling agent. The remaining swelling agent is then removed by application of heat.

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patent: 4372758 (1983-02-01), Bobst et al.

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