Division of a polyarylene ether solution

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United States of America Patent

PATENT NO 9828472
APP PUB NO 20160208056A1
SERIAL NO

14904491

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Abstract

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Process for producing polyarylene ether beads from a polyarylene ether solution, comprising the steps of

    i) dividing the polyarylene ether solution into droplets,ii) transferring the droplets into a precipitation bath to form polyarylene ether beads in the precipitation bath which(A) comprises at least one aprotic solvent (component (1)) and at least one protic solvent (component (2)),(B) has a temperature of 0° C. to Tc, where the critical temperature Tc in [° C.] can be determined by the numerical equation Tc=(77−c)/0.58 in which c is the concentration of component (1) in the precipitation bath in [% by weight] and(C) has component (1) in concentrations of 5% by weight to cc, where the critical concentration cc in [% by weight] can be determined by the numerical equation cc=77−0.58*T in which T is the temperature in the precipitation bath in [° C.], wherethe percentages by weight are each based on the sum of the percentages by weight of component (1) and of component (2) in the precipitation bath.

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Patent Owner(s)

Patent OwnerAddress
BASF SELUDWIGSHAFEN GERMANY LUDWIGSHAFEN RHINELAND-PALATINATE

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Erbes, Joerg Karlsruhe, DE 13 42
Kortekamp, Tobias Mannheim, DE 11 66
Lange, Gerhard Schriesheim, DE 49 457
Schneider, Cecile Frankenthal, DE 7 40

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