Evonik Degussa Gmbh

Degussa Aktiengesellschaft

Evonik Operations Gmbh

Huels Aktiengesellschaft

Evonik Roehm Gmbh

Evonik Rohm Gmbh

Degussa-huels Aktiengesellschaft

Evonik Industries Ag

Stephan Kohlstruk

Manfred Kreczinski

Emmanouil Spyrou

Anne Rittsteiger

Alexander Martin Rüfer

Martina Ortelt

Jörg-Joachim Nitz

Rainer Lomoelder

Dirk Fuchsmann

Michael Ewald

Hans-Werner Michalczak

Lutz Mindach

Michael Demming

Axel Hengstermann

Dirk Hoppe

Christine Stemmer

Denise Ott

Robert Jansen

Anja Stasch

Monika Berweiler

Guenter Schmitt

Rainer Elm

Joerg-Joachim Nitz

Guido Streukens

Sven Schneider

Sven Balk

Gerda Grund

Hinnerk Gordon Becker

Markus Pridoehl

Christian Lettmann

Eike Langkabel

Dirk Poppe

Matthias Orschel

Elke Gollan

Friedrich Plogmann

Stefan Röder

Guido Stochniol

Holger Loesch

Friedrich Georg Schmidt

Patrick Glöckner

Werner Andrejewski

Heike Heeb

Günter Schmitt

Sabrina Sowka

Anja Mueller

Jaclyn Balthasar

Andreas Merkel

Ludo Dewaelheyns

Matthias Mendorf

Ingo Bockhoff

Manuela Windmueller

Norbert Schlüter

Jan Cassens

Benjamin Hammann

Sonja Cremer

Kris Beks

Sandra Reemers

Thomas Arnold

Andrea Henschke

Alessandro Cerri

Rainer Lom&ouml;lder

Lars Hellkuhl

Rainer Lomölder

Jens Doering

Nicole Fresmann

Cornelia Baumann

Stefanie Maus

Stephanie Bajus

Klaus Pinske

Jens Döring

Norbert Schlueter

Markus Galle

Jan Caßens

Anja Müller

Andreas Hoff

Heinz Grosse-Beck

Marita Druener

Jorn Walscharts

Elke Seipel

Anja Poschen

Waltraud Poersch

Lothar Hayen

Jansen Volker

Alexander Martin Ruefer

Stefan Roeder

Markus PRIDÖHL

Alexander Martin RÜFER

The present invention relates to a process for preparing isocyanate containing alkoxysilane groups, in which, in the sequence of steps A) to D),

Process for preparing isocyanates containing alkoxysilane groups

The invention relates to a process for preparing isocyanate containing alkoxysilane groups, in which, in the sequence of steps A) to D),

The present invention relates to a process for hydrogenating nitrile compounds to amino compounds, in which the cross-sectional loading of the reactor during the hydrogenation is less than or equal to 4.0 kg/m*s, based on the liquid phase.

Process for preparing amino compounds from nitrile compounds

A process for fine purification of isophoronediamine (IPDA), including producing IPDA by aminating hydrogenation of isophorone nitrile in the presence of at least ammonia, hydrogen, a a hydrogenation catalyst and optionally further additions to obtain a crude IPDA, and subjecting the crude IPDA to a fine purification via two vacuum distillation columns, wherein in the first vacuum distillation column the removal of any remaining relatively low-boiling byproducts is effected and in the second vacuum distillation column the IPDA is obtained in pure form as tops and thus separated from the organic residues, and wherein the first vacuum distillation column has vacuum distillation column has a partial condenser fitted to it.

Coupling of distillative purification with a partial condenser for pre-purification of isophoronediamine

A compound of the structural formula as a hardener in epoxy resin composition.

2-(3-(aminomethyl)-3,5,5-trimethylcyclohexyl)propane-1,3-diamine, a process for its production and use

An epoxy resin composition including A) at least one epoxy compound and B) a hardener composition including B1) 0.1%-100% by weight of 2-(3-(aminomethyl)-3,5,5-trimethylcyclohexyl)propane-1,3-diamine, and B2) 99.9%-0% by weight of at least one further diamine and/or polyamine, where the stoichiometric ratio of the epoxy groups of A) and the number of active hydrogen atoms of the functional groups of B) varies from 1:2 to 2:1.

Epoxy resin composition comprising 2-(3-(aminomethyl)-3,5,5-trimethylcyclohexyl)propane-1,3-diamine (AM-CPDA) as hardener

An epoxy resin composition including A) at least one epoxy compound, and B) a hardener composition including B1) from 0.1%-100% by weight of 2-(2,2,6,6-tetramethylpiperidin-4-yl)propane-1,3-diamine, and B2) from 99.9%-0% by weight of at least one further diamine and/or polyamine, where the stoichiometric ratio of the epoxy groups of A) and the number of active hydrogen atoms of the functional groups of B) varies from 1:2 to 2:1.

Epoxy resin composition comprising 2-(2,2,6,6-tetramethylpiperidin-4-yl)propane-1,3-diamine as hardener

The present invention relates to 2-(2,2,6,6-tetramethylpiperidin-4-yl)propane-1,3-diamine, which can be used as hardener in epoxide applications.

Hardener composition including 2-(2,2,6,6-tetramethylpiperidin-4-yl)propane-1,3-diamine

A compound of the structural formula 1 A process for producing 2-(3-(aminomethyl)-3,5,5-trimethylcyclohexyl)propane-1,3-diamine by A) reacting isophorone nitrile and malononitrile to afford the intermediate 2-(3-cyano-3,5,5-trimethylcyclohexylidene)malononitrile, and B) hydrogenating 2-(3-cyano-3,5,5-trimethylcyclohexylidene)malononitrile in the presence of at least one catalyst. In another embodiment, the hydrogenation in step B) of the process is performed at 20-120&#xb0; C. and at 20-300 bar.

Process for preparing isophoronediamine, characterized in that

Process for preparing 3 aminomethyl-3,5,5-trimethylcyclohexylamine

The present invention provides a novel process for producing 2,6,6-trimethyl-2-cyclohexene-1,4-dione (keto-isophorone) by catalytic oxidation of 3,5,5-trimethylcyclohexa-3-ene-1-one (&#x3b2;-isophorone) with hydrogen peroxide as the oxidant. In particular, the novel process includes phase transfer reagent in a biphasic system including an organic phase and an aqueous phase wherein the biphasic system includes 1) a tungsten polyoxyometallate as catalyst and hydrogen peroxide, and/or 2) a mixture of a) a mineral acid, b) hydrogen peroxide, and c) a metal tungstate.

Catalytic oxidation of 3,5,5-trimethylcyclohexa-3-ene-1-one (&#x3b2;-isophorone) with hydrogen peroxide to afford 2,6,6-trimethyl-2-cyclohexene-1,4-dione (keto-isophorone)

Isophoronediamine, is prepared by A) subjecting isophoronenitrile directly in one stage to aminating hydrogenation to give isophoronediamine in the presence of ammonia, hydrogen, a hydrogenation catalyst and an optional additive, and in the presence or absence of an organic solvent; or B) first converting isophoronenitrile fully or partly in at least two or more than two stages to isophoronenitrile imine, and subjecting the isophoronenitrile imine to aminating hydrogenation to give isophoronediamine as a pure substance or in a mixture with another component and/or isophoronenitrile, in the presence of at least ammonia, hydrogen and a catalyst.

Process for preparing 3-aminomethyl-3,5,5-trimethylcyclohexylamine

Provided is a prepreg composed of a fibrous substrate impregnated with a reactive or highly reactive polymer composition as a matrix material. The reactive or highly reactive polymer composition contains a (meth)acrylate-based resin comprising at least one of a hydroxyl group, an amine group, a thiol group, an initiator and/or accelerator, and a di- or polyisocyanate which has been internally capped, capped with a capping agent, or a combination thereof. The (meth)acrylate-based resin contains from 20% by weight to 70% by weight of at least one (meth)acrylate monomer and from 1% by weight to 50% by weight of at least one prepolymer.

Composite semifinished products, molded parts produced therefrom, and molded parts produced directly based on hydroxy-functionalized (meth)acrylates, which are cross-linked by means of uretdiones in a thermosetting manner

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Gladbeck, Germany

Stephan Kohlstruk