Invention Grant
- Patent Title: Division of a polyarylene ether solution
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Application No.: US14904610Application Date: 2014-07-16
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Publication No.: US09809685B2Publication Date: 2017-11-07
- Inventor: Joerg Erbes , Gerhard Lange , Tobias Kortekamp , Cecile Schneider
- Applicant: BASF SE
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: EP13176991 20130718
- International Application: PCT/EP2014/065242 WO 20140716
- International Announcement: WO2015/007776 WO 20150122
- Main IPC: C08G75/00
- IPC: C08G75/00 ; C08J3/14 ; C08G65/46 ; C08G75/23

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.], where the 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.
Public/Granted literature
- US20160215105A1 DIVISION OF A POLYARYLENE ETHER SOLUTION Public/Granted day:2016-07-28
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