Evonik Degussa Gmbh

Evonik Operations Gmbh

Benjamin Willy

Rolf Schneider

Olivier Zehnacker

Xinming Wang

Manfred Neumann

Jochen Niemeyer

Michael Keup

Felix Nissen

Guenter Kreilkamp

Katharina Minke

Emmanouil Spyrou

Matthias Seiler

Volker Brehme

Elke Gollan

Stefanie Rinker

Jörn Rolker

Marie-Theres Wilkes

Odo Wunnicke

Christoph Hiller

Daniel Witthaut

Jeffrey Howard Dimmit

Stefan Münzner

Daniel Dembkowski

Peter Altenbuchner

Christiane Zatocil

Alexander Schraven

Felix Gärtner

Matthias Bahlmann

Marc-Christoph Schneider

David Bléger

Thomas Pastor

Kim Bühning

Beatrix Vom Bruch

Maik Dimmerling

Markus Lütkehaus

Werner Escher

Sabine Schering

Franz-Albert Von Itter

Bettina Bressel

Jorn Rolker

Bettina Ludwig

Chris Jones

The present invention relates to an additive manufacturing process using a composition comprising the reaction product of a polyester polyol and a compound comprising at least one functional group that can react with a hydroxyl-group of the polyester polyol and at least one further functional group, selected from acrylate-or methacrylate-group, wherein the polyester polyol is based on at least one organic acid comprising at least two carboxyl groups or its anhydride and at least one polyol comprising at least two hydroxy-groups, wherein the reaction product has a glass transition temperature Tg of below 23° C., wherein the composition optionally further comprises a photoinitiator, as a photopolymerizable material in.

Composition comprising polyesters for additive manufacturing

The invention relates to a process for dehumidifying a moist gas mixture. The invention further relates to an apparatus for dehumidifying a moist gas mixture and to the use of said apparatus in the process according to the invention.

Process for dehumidifying moist gas mixtures

Method for dehumidifying humid gas mixtures using ionic liquids

An N-methyl-substituted triacetonamine compound can be produced by reacting at least one triacetonamine compound with formaldehyde under reductive conditions.

Process for preparing an N-methyl-substituted triacetonamine compound

An N-substituted triacetonediamine compound is produced by reacting 4-amino-2,2,6,6-tetramethylpiperidine or a derivative thereof with a carbonyl compound in a reductive amination.

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

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.

The invention relates to a process for purifying an ionic liquid comprising dialkylimidazolium ions by means of stripping, wherein water vapor is used at a particular temperature. The process according to the invention is characterized in that the decomposition of the ionic liquid is minimized during the procedure of the process.

Process for purifying an ionic liquid

The invention relates to a process for dehumidifying a moist gas mixture in which the moist gas mixtures are brought into contact with an absorbent comprising dialkylimidazolium salts and trialkyl phosphate. In addition, the invention also relates to an absorption heat pump comprising the absorbent according to the invention and to the absorbent according to the invention itself.

Process and absorbent for dehumidifying moist gas mixtures

The present invention encompasses a novel method for synthesizing highly pure salts of the general formula QA, wherein Qis: and wherein Ais 

Method of preparing a high purity imidazolium salt

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) 

[object Object]

An N-methyl-substituted triacetonamine compound is prepared by reacting at least one triacetonamine compound (I) with formaldehyde under reductive conditions, in the presence of hydrogen and in the presence of a supported catalyst, wherein the supported catalyst contains 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.

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Düsseldorf, Germany

Benjamin Willy