Evonik Degussa Gmbh

Evonik Operations Gmbh

Construction Research & Technology Gmbh

Frank Weinelt

Franz-Erich Baumann

Martin Roos

Siegfried R Waldvogel

Jürgen Herwig

Alois Maier

Wiebke Stache

Norbert Steidl

Franz Wolfertstetter

Kévin Micoine

Heike Bergandt

Ulrich Diester

Doris Pasing

Anna-Lisa Rauen

Marita Spierling

A method for the electrochemical preparation of alkanedicarboxylic acids involves a ring-opening oxidation with a doped Ni(O)OH foam electrode in an aqueous alkaline solution.

Method for electrochemically producing alkane dicarboxylic acids by means of a ring-opening oxidation using a doped Ni(O)OH foam electrode

The invention relates to a method for the purification of poly(arylene ethers) of formula (I) in which m=0 to 1.0, n=1.0-m, and Ar, Ar, Arand Arindependently represent divalent arylene groups. The compound of formula (I) is produced in a first step 1, with a raw product being obtained by bringing a metal or ammonium salt of divalent dihydroxy derivatives of Aror Arinto contact with one or more dihalogenated derivatives of Arand/or Ar, in the presence of a solvent LM1. A precipitate that is present, if appropriate, is separated (step B) so as to obtain a solution L which then undergoes a membrane filtration (step C). 

Method for the purification of poly(arylene ethers)

The invention relates to a method for producing a flexible mineral building material and the building material obtained according to said method.

Flexible coating composites having primarily mineral composition

A nail varnish additive contains a) at least one silane of the general formula  wherein the radicals R, R, R, Rare identical or different, have 1 to 40 carbon atoms and are non-crosslinking, and optionally b) at least one solvent.

Lustrous and scratch-resistant nail varnish through addition of silanes

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Billerbeck, Germany

Frank Weinelt