Process for preparing diaryl carbonate

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United States of America Patent

PATENT NO 8882984
SERIAL NO

12759074

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Abstract

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A process for preparing diaryl carbonate and utilizing at least part of the process wastewater by increasing the concentration of the wastewater phases containing sodium chloride for the electrolysis by means of osmotic membrane distillation with simultaneous dilution of the sodium hydroxide solution obtained from the electrolysis for the diaryl carbonate production process (diphenyl carbonate process) is described.

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Patent Owner(s)

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COVESTRO DEUTSCHLAND AG51373 LEVERKUSEN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bulan, Andreas Langenfeld, DE 113 478
Buts, Marc Duffel, BE 12 66
Ooms, Pieter Krefeld, DE 99 704
Rechner, Johann Kempen, DE 63 497
Traving, Michael Burscheid, DE 20 55
Vanden, Eynde Johan Zwijnaarde, BE 34 85
Weber, Rainer Odenthal, DE 109 664

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