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Patent Searching and Data


Title:
METHOD FOR PRODUCING DICARBOXYLIC ACIDS
Document Type and Number:
WIPO Patent Application WO/2014/108163
Kind Code:
A3
Abstract:
The invention relates to a method for fermentational production of dicarboxylic acids with a purity of 95-99.9 wt%, wherein the dicarboxylic acid is subjected to a crystallisation in which a mother liquor is produced, of which 2-100% is withdrawn and the dicarboxylic acid contained therein is reacted to form the anhydride thereof and any accumulated residual mother liquor is fed back upstream of the crystallisation.

Inventors:
FRITSCH MARKUS (DE)
SCHULZE JOACHIM (DE)
BÖRNER ARMIN (DE)
SHUKLOV IVAN (DE)
Application Number:
PCT/EP2013/003894
Publication Date:
October 23, 2014
Filing Date:
December 20, 2013
Export Citation:
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Assignee:
THYSSENKRUPP UHDE GMBH (DE)
International Classes:
C07C51/44; C07C51/573; C07C55/10; C12P7/46
Foreign References:
DE69006555T21994-08-25
US3359283A1967-12-19
Attorney, Agent or Firm:
THYSSENKRUPP UHDE GMBH (Dortmund, DE)
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