Evonik Degussa Gmbh

Matthias Ullrich

Martin Roos

Peter Hannen

Franz-Erich Baumann

Harald Haeger

Andreas Martin

Angela Köckritz

Angela Koeckritz

Frank-Martin Petrat

Harald Häger

Jens Deutsch

Guido Walther

The invention relates to a method for the ozonolysis of unsaturated fatty acids and derivatives thereof, comprising a) ozonolysis of a fatty acid or of a derivative thereof in an organic phase comprising an organic solvent, and b) contacting the organic phase with an aqueous phase comprising catalase and preferably a buffer, where the fatty acid or the derivative thereof has a linear chain having at least eight carbon atoms, and the use of catalase for removing reactive oxygen species from a reaction mixture comprising ozonolysis products of an unsaturated fatty acid.

Ozonolysis of unsaturated fatty acids and derivatives thereof

The invention provides a method to produce primary diamines by catalytic conversion of diols having a linear main chain of from 4 to 31 carbon atoms into the corresponding diamines. The reaction is conducted in a liquid or supercritical phase and is catalyzed by a homogeneous ruthenium-containing complex. The primary diamines obtained may be suitable for polyamide syntheses.

Preparation of primary diamines having a linear main chain for polyamide syntheses

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Kassel, Germany

Matthias Ullrich