The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 11, 2014
Filed:
Apr. 13, 2010
Pieter Ooms, Krefeld, DE;
Andreas Bulan, Langenfeld, DE;
Johann Rechner, Kempen, DE;
Rainer Weber, Odenthal, DE;
Michael Traving, Burscheid, DE;
Marc Buts, Duffel, BE;
Johan Vanden Eynde, Zwijnaarde, BE;
Pieter Ooms, Krefeld, DE;
Andreas Bulan, Langenfeld, DE;
Johann Rechner, Kempen, DE;
Rainer Weber, Odenthal, DE;
Michael Traving, Burscheid, DE;
Marc Buts, Duffel, BE;
Johan Vanden Eynde, Zwijnaarde, BE;
Bayer MaerialScience AG, Leverkusen, DE;
Abstract
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.