Covestro Deutschland Ag

Covestro Intellectual Property Gmbh & Co. Kg

Swantje Behnken

Amgad Salah Moussa

Gernot Jäger

Wolf Kloeckner

Guenter Olf

Thomas Hamedinger

Hartmut Nefzger

Gernot Jaeger

Wolfgang Beckmann

Guido Becker

Gesa Behnken

Giulio Lolli

Jorgen Magnus

Natalie Bittner

Lukas Reisky

Simon Klaffl

Jung-Won Youn

Mohammad Yalfani

Georg Sprenger

Andreas Damm

Hasan Akyildiz

Jamaleddine Sassi

Gernot JÄGER

Amgad-Salah Moussa

The present invention relates to new urethanases for the enzymatic breakdown of polyurethanes and to an enzymatic process for the complete breakdown of polyurethanes into defined monomers.

Urethanases for the enzymatic degradation of polyurethanes

The invention relates to a method for producing aminobenzoic acid or a aminobenzoic acid derivative via the fermentation of a suitable raw material under the influence of suitable microorganisms and obtaining a fermentation broth containing aminobenzoate and/or aminobenzoic acid. In particular, the invention relates to the step of obtaining the aminobenzoic acid from the fermentation broth, wherein the crystallisation of aminobenzoic acid is carried out via a simple one-stage acid treatment in the presence of seed crystals. The aminobenzoic acid crystallised in this simple manner can be easily separated from the mother liquor, further cleaned if necessary, and then supplied to the different applications.

Method for producing aminobenzoic acid or an aminobenzoic acid derivative

The present invention relates to the production of o-aminobenzoic acid from fermentable substrates using yeast cells.

Process for the production of ortho-aminobenzoic acid and/or aniline from fermentable substrate using recombinant yeast

The invention provides a recombinant microbial host cell capable of converting a raw material comprising a fermentable carbon substrate to o-aminobenzoate biologically. The invention further provides a method for producing aniline, comprising the steps of: a) producing o-aminobenzoate by fermentation of a raw material comprising at least one fermentable carbon substrate using the recombinant microbial host cell of the capable of converting said raw material comprising at least one fermentable carbon substrate to o-aminobenzoate biologically, wherein said o-aminobenzoate comprises anthranilate anion, b) converting said o-aminobenzoate from said anthranilate anion to anthranilic acid by acid protonation, c) recovering said anthranilic acid by precipitation or by dissolving in an organic solvent, and d) converting said anthranilic acid to aniline by thermal decarboxylation in an organic solvent.

Recombinant strain producing O-aminobenzoate and fermentative production of aniline from renewable resources via 2-aminobenzoic acid

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Sacramento, CA, United States of America

Swantje Behnken