Separating a polyarylene ether solution

The invention relates to a method for producing polyarylene ether beads from a polyarylene ether solution, having the steps of i) separating the polyarylene ether solution into drops and ii) transporting the drops into a precipitation bath, thereby forming polyarylene ether beads in the precipitatio...

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Hauptverfasser: LANGE GERHARD, KORTEKAMP TOBIAS, SCHNEIDER CECILE, ERBES JORG
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creator LANGE GERHARD
KORTEKAMP TOBIAS
SCHNEIDER CECILE
ERBES JORG
description The invention relates to a method for producing polyarylene ether beads from a polyarylene ether solution, having the steps of i) separating the polyarylene ether solution into drops and ii) transporting the drops into a precipitation bath, thereby forming polyarylene ether beads in the precipitation bath. The precipitation bath (A) contains at least one aprotic solvent (component (1)) and at least one protic solvent (component (2)), (B) has a temperature of 0 DEG C to Tc, the critical temperature Tc in [ DEG C] being determined by the numerical equation Tc = (77 - c)/0.58, in which c is the concentration of the component (1) in the precipitation bath in [wt.%], and (C) has the component (1) in concentrations of 5 wt.% to cc, the critical concentration cc in [wt.%] being determined by the numerical equation cc = 77 - 0.58 * T, in which T is the temperature in the precipitation bath in DEG C, wherein the wt.% in each case is based on the sum of the wt.% of the component (1) and the component (2) in the precipi
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subjects AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
GENERAL PROCESSES OF COMPOUNDING
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
WORKING-UP
title Separating a polyarylene ether solution
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