Division of a polyarylene ether solution
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United States of America Patent
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Nov 7, 2017
Issued Date -
N/A
app pub date -
Jul 16, 2014
filing date -
Jul 18, 2013
priority date (Note) -
In Force
status (Latency Note)
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Abstract
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=(99−c)/0.61 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=99−0.61*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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Cited Art Landscape
Patent Citation Ranking
- 17 Citation Count
- C08J Class
- 92.76 % this patent is cited more than
- 8 Age
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