Other

Consortium Fur Elektrochemische Industrie Gmbh

Consortium F&uuml;r Elektrochemische Industrie Gmbh

J&uuml;rgen Stohrer

Johannes Freudenreich

Manfred Amann

Elke Fritz-Langhals

Hermann Petersen

Klas Sorger

Hans-Peter Call

Robert M&uuml;ller

Wolfgang D&ouml;ring

Michael Wohlschlager

A process for preparing organozinc halides in solvents, includes reacting a reactive halogen compound with zinc in one or more carboxylic esters. It is also possible to prepare keto, hydroxyl and amino compounds of organozinc halides obtained in a first step from a reactive halogen compound and zinc in one or more carboxylic esters, wherein the organozinc halide obtained is reacted in a second step with an electrophilic reaction partner and the reaction product of the second step is hydrolyzed in a third step.

Preparation of organozinc halides from reactive halogen compounds and their use

A process for precipitating cystine from a solution in sulfuric acid, includes forming a mixture of a solution of cystine in aqueous sulfuric acid and of an aqueous solution of a base by simultaneous metering the cystine solution and the aqueous base solution into a mixing container. The metering takes place in such a way that the mixture in the container has a pH between 1.0 and 7.0 and a temperature between 30&deg; C. and the boiling point of the mixture.

Process for the precipitation of cystine

Multi-component system for modifying, degrading or bleaching lignin, lignin-containing materials or similar substances, includes (a) if appropriate at least one oxidation catalyst; (b) at least one suitable oxidizing agent; and (c) at least one mediator, wherein the mediator is chosen from the group consisting of N-aryl-N-hydroxyamides.

Multi-component system for modifying, degrading or bleaching lignin, lignin-containing materials or similar substances

A multicomponent system for modifying, degrading or bleaching lignin and lignin-containing materials or similar substances, includes an oxidoreductase and an oxidant suitable for the oxidoreductase and a mediator and at least one enzymatically active additive. The mediator does not inactivate the oxidoreductase and the enzymatically active additive, and the enzymatically active additive is selected from the group consisting of the hydrolases of the enzyme class 3.2.1.

Multicomponent system for modifying, degrading or bleaching lignin or lignin-containing materials, and processes for its use

According to the inventive method for producing organic hydroxylamines, at least one organic nitro compound is partially hydrogenated in the presence of an organic base or ammonia, a trivalent phosphor compound and a hydrogenation catalyst. The invention is characterised in that quantities of the nitrogen base of more than 10 wt. % in relation to the organic nitro compound are used.

Growing community of inventors

Pullach, Germany

Jürgen Stohrer

Growing community of inventors

Pullach, Germany

J&uuml;rgen Stohrer

Jürgen Stohrer