Lanxess Deutschland Gmbh

Saltigo Gmbh

Lanxess Corporation

Ralf Krahwinkel

Martina Gerdinand

Rainer Dost

Hans-Jurgen Quella

Daniel Ullrich

Patrick Kurr

Erasmus Vogl

Robert Markert

Edwin Ritzer

Andreas Job

Antje Hieronymi

Denys Baskakov

Hans-Jürgen Quella

The invention relates to novel methods for preparing N-methyl-p-toluidine for the use thereof as additive for aviation fuel, and to specific catalysts for these methods.

Method for producing N-methyl-p-toluidine for use as an additive for aviation gasoline

A method is described for the production of sorbic anhydride, in which alkali metal or alkaline earth metal salts of sorbic acid are reacted with phosgene in an inert organic solvent. In addition, use thereof as a preservative in foods, in particular drinks, is described.

Method for producing sorbic anhydride and also use thereof as a preservative in foods

The invention provides an improved method for the production of terminal group-capped polyethers using homogeneous catalysis in the presence of Br&#xf6;nstedt acids.

Method for the homogeneously catalyzed production of terminal group-capped polyethers

What is described is a process for preparing compounds of the general formula (I) in which R, Rand Rindependently of one another represent hydrogen, an alkyl group or an aryl group, wherein compounds of the general formula (II) in which Rand Rhave the meaning given for formula (I),are reacted with an alkylating agent of the general formula (III)RX&#x2003;&#x2003;(III),in which X represents a halogen atom and Rhas the meaning given for formula (I), if appropriate in a solvent.

Process for preparing quaternary salts of piperidyl esters of mandelic acid

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Langenfeld, Germany

Ralf Krahwinkel