Evonik Degussa Gmbh

Th. Goldschmidt Ag

Goldschmidt Ag

Evonik Stockhausen Gmbh

Goldschmift Ag

Golschmidt Ag

Evonik Operations Gmbh

Michael Keup

Stefan Silber

Roland Sucker

Thomas Ebbrecht

Wolfgang Josten

Franck Furno

Harald Schmidt

Manfred Neumann

Peter Herbe

Ursula Nielinger

Rolf Schneider

Matthias Seiler

Benjamin Willy

Mirko Walden

Volker Brehme

Armin Reimann

Jörn Rolker

Daniel Dembkowski

Jochen Niemeyer

Roland Spiegler

Burghard Gruning

Peter Lersch

Felix Müller

Jörg Peggau

Axel Kobus

Hermann Winkler

Wolfgang Benesch

Rainer Teni

Daniel Witthaut

Otto Klocker

Jörg Issberner

Stefanie Rinker

Wernfried Heilen

Petra Hinrichs

Guenter Kreilkamp

Ellen Wallhorn

Thomas Riethmann

Hans-Leo Karminski

Muhammad Irfan

Beatrix Vom Bruch

Kerstin Kugel

Frank Konig

Jorn Rolker

An N-substituted triacetonediamine compound is prepared by reacting 4-amino-2,2,6,6-tetramethylpiperidine or a derivative thereof with a carbonyl compound in a reductive amination, wherein reductive conditions are established by conducting the reaction in the presence of hydrogen and in the presence of a supported catalyst, wherein the supported catalyst includes at least one metal M, wherein the metal M is selected from the group consisting of V, Cr, Mo, Mn, Ni, Pd, Pt, Fe, Ru, Os, Co, Rh, Ir, and Cu.

Synthesis of triacetonediamine compounds by reductive amination proceeding from triacetonediamine and derivatives thereof

In a method of absorbing COfrom a gas mixture the use of an absorption medium comprising water and at least one amine of formula (I) 

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The present invention relates to a process for the preparation of water-absorbing polymer structures, comprising the following process steps: The invention relates also to the water-absorbing polymer structures obtainable by that process, to water-absorbing polymer structures, to a composite comprising a water-absorbing polymer structure and a substrate, to a process for the preparation of a composite, to the composite obtainable by that process, to chemical products, such as foams, molded articles and fibers comprising water-absorbing polymer structures or a composite, to the use of water-absorbing polymer structures or of a composite in chemical products and to the use of a salt in the treatment of the surface of water-absorbing polymer structures.

Water-absorbing polymer structure having improved permeability and absorption under pressure

The present invention relates to a process for the preparation of water-absorbing polymer structures, comprising the following process steps: I) providing an untreated, water-absorbing polymer structure; and II) bringing the untreated, water-absorbing polymer structure into contact with a salt comprising a divalent or higher-valent cation of a metal and at least one organic base as anion. The invention relates also to the water-absorbing polymer structures obtainable by that process, to water-absorbing polymer structures, to a composite comprising a water-absorbing polymer structure and a substrate, to a process for the preparation of a composite, to the composite obtainable by that process, to chemical products, such as foams, molded articles and fibers comprising water-absorbing polymer structures or a composite, to the use of water-absorbing polymer structures or of a composite in chemical products and to the use of a salt in the treatment of the surface of water-absorbing polymer structures.

COis absorbed from a gas mixture by contacting the gas mixture with an absorption medium which comprises at least water as solvent and at least one amine of formula (I) where Ris an aliphatic radical, having 2 to 6 carbon atoms and at least one amino group, and Ris hydrogen, a Calkyl radical or a radical R.

Amine-containing absorption medium, process and apparatus for absorption of acidic gases from gas mixtures

The invention relates generally to an odor-absorbing superabsorbing composition, a process for production of an odor-absorbing superabsorbing composition, a composite comprising an odor-absorbing superabsorbing composition, a hygiene article comprising a composite, chemical products comprising or based on an odor-absorbing superabsorbing composition or a composite, as well as the use of an odor-absorbing superabsorbing composition or of a composite in chemical products.

Deodorizing super-absorbent composition

The present invention relates to a process for production of water-absorbing polymer structures comprising the process steps of providing an untreated, water-absorbing polymer structure (Pu) with a retention of at least about 35 g/g; and bringing this water-absorbing untreated polymer structure (Pu) into contact with a permeability-increasing agent. The invention further relates to the water-absorbing polymer structures obtainable by this process, water-absorbing polymer structures, a composite, a process for production of a composite, a composite obtainable by this process, chemical products comprising water-absorbing polymer structures or a composite as well as the use of water-absorbing polymer structures or of the composite in chemical products.

Water-absorbing polymer structures with improved absorption properties

Use of water-insoluble polyoxyalkylene-polysiloxane block copolymers for defoaming aqueous media

Water-insoluble poly(oxy-1,4-butanediyl)-containing polyoxyalkylene-polysiloxane block copolymers for defoaming aqueous media

Use of water-insoluble poly(oxy-1,4-butanediyl)-containing polyoxyalkylene-polysiloxane block copolymers for defoaming aqueous media

Use of water-insoluble polyoxyarylene-polysiloxane block copolymers for defoaming aqueous media

A defoamer emulsion, based on organofunctionally modified polysiloxanes, is obtained by mixing one or several more closely defined organofunctionally modified siloxanes and, optionally, finely divided silica, and emulsifying the mixture by means of a low-shear stirrer with water which contains a hydrophilic, organofunctionally modified polysiloxane.

Defoamer emulsion based on organofunctionally modified polysiloxanes

The invention relates to compound antifoams comprising alkoxylated partial esters--using from 3 to 60 mol of propylene oxide with or without from 1 to 10 mol of styrene oxide and/or from 1 to 10 mol of butylene oxide--of oligoglycerols, obtainable by condensation of 2 to 20 glycerol molecules, with C.sub.8 to C.sub.22 fatty acids and inorganic or organic solids for defoaming polymer dispersions and aqueous coating systems.

Compound antifoams for defoaming polymer dispersions and aqueous coating

Polysiloxane-polyoxyethylene-polyoxypropylene triblock copolymers having the general formula: ##STR1## as well as compounds for the defoaming of aqueous dispersion paints that are disclosed contain the copolymers as effective defoaming components.

Polysiloxane-polyoxyethylene-polyoxypropylene triblock copolymers and

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Essen, Germany

Michael Keup