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1. (WO2015047716) SALT BYPRODUCT SEPARATION DURING FORMATION OF POLYARYLENE SULFIDE

Pub. No.:    WO/2015/047716    International Application No.:    PCT/US2014/054724
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Wed Sep 10 01:59:59 CEST 2014
IPC: C08K 3/00
C08L 81/04
Applicants: TICONA LLC
Inventors: CHIONG, Hendrich A.
HAUBS, Michael
FEORD, Damian
SHATZER, Mark
GRAYSON, Jacob
Title: SALT BYPRODUCT SEPARATION DURING FORMATION OF POLYARYLENE SULFIDE
Abstract:
Methods of forming a polyarylene sulfide and systems as may be utilized in carrying out the methods are described. Included in the formation method is a filtration process for treatment of a mixture, the mixture including a polyarylene sulfide, a salt byproduct of the polyarylene sulfide formation reaction, and a solvent. The filtration process includes maintaining the downstream side of the filter medium at an increased pressure. The downstream pressure can such that the boiling temperature of the mixture at the downstream pressure can be higher than the temperature at which the polyarylene sulfide is insoluble in the solvent.