Evonik Degussa Gmbh

Evonik Operations Gmbh

Evonik Industries Ag

Dirk Fuchsmann

Martina Ortelt

Britta Kohlstruk

Stephan Kohlstruk

Anne Rittsteiger

Alexander Martin Rüfer

Jörg-Joachim Nitz

Eike Langkabel

Emmanouil Spyrou

Michael Demming

Denise Ott

Christine Stemmer

Anja Stasch

Katharina Karns

Jaclyn Balthasar

Annette Sandkühler

Thomas Haas

Holger Loesch

Rainer Lomoelder

Friedrich Georg Schmidt

Jan Christoph Pfeffer

Elke Gollan

Benedikt Hartwig

Andrea Henschke

Sebastian De Nardo

Ralph Aldridge

Wladimir Richter

Elena Mikhaylova

Anja Poschen

Vladislav Yaroslavskiy

Michael Vogel

Annette Sandkuehler

Jens Hillen

Elena Timofeeva

Dr Martina Ortelt

Alexander Martin RÜFER

The present invention relates to a low-alkylphenol composition comprising a) at least one epoxy resin, b) at least one amine having at least two secondary amino groups that are both part of an organic ring system, and c) at least one salt of a strong Br&#xf8;nsted acid with a counterion selected from metal ions, metal-containing ions, phosphonium ions and ammonium ions, to processes for production thereof and to the use thereof.

Fast-curing epoxy systems

The present invention provides a composition comprising a) at least one epoxy resin, b) at least one cyclic amine of the formula (I) in which

The present invention relates to the use of substituted benzyl alcohols as modifiers in epoxy systems.

Use of substituted benzyl alcohols in reactive epoxy systems

Epoxy resin compositions containing at least one resin component and at least one hardener component are suitable as a thermoset matrix for production of semi-finished fiber matrix products and cured fiber matrix laminates known as composites.

Epoxy resin compositions for production of storage-stable composites

The present invention is directed to a reinforced building block made of autoclaved aerated concrete (AAC) comprising rebars formed essentially from A) at least one fibrous carrier and B) and a hardened composition formed from B1) at least one epoxy compound and B2) at least one diamine and/or polyamine in a stoichiometric ratio of the epoxy compound B1) to the diamine and/or polyamine component B2) of 0.8:1 to 2:1, as matrix material, and C) optionally further auxiliaries and additives and to methods of production thereof.

Reinforced building block made of autoclaved aerated concrete (AAC)

Latent epoxy resin formulations are suitable for liquid impregnation processes for production of fiber composite materials.

Latent epoxy resin formulations for liquid impregnation processes for production of fibre composite materials

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.

Epoxy compositions containing at least one resin component and at least one hardener component, are suitable as a thermoset matrix for production of semi-finished fiber matrix products and cured fiber matrix laminates.

Latent epoxy resin formulations for liquid impregnation processes for production of fibre-reinforced composites

The invention relates to a method for producing storage-stable polyurethane prepregs and molding bodies produced therefrom (composite components), which can be obtained by a method using a polyurethane composition in solution and by impregnation of fiber-reinforced materials such as of woven fabrics and laid scrim using reactive polyurethane compositions.

Process for the production of storage-stable polyurethane prepregs and mouldings produced therefrom from dissolved polyurethane composition

A curable composition including an epoxy resin, an open-chain polyamine, and a compound of the formula (I); a hardened composition prepared by curing the curable composition; a process for coating a surface or impregnating a textile sheet, including applying and hardening the curable composition; and a surface, a fiber composite material, a coating, or an adhesive including the hardened composition, 

Curable composition with high fracture toughness

A process for producing 2-(2,2,6,6-tetramethylpiperidin-4-yl)propane-1,3-diamine by A) reacting triacetonamine (TAA) and malononitrile to afford the intermediate 2-(2,2,6,6-tetramethylpiperidin-4-ylidene)malononitrile, and B) hydrogenating 2-(2,2,6,6-tetramethylpiperidin-4-ylidene)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. In another embodiment, the hydrogenation in step B) of the process is performed in two stages at 20-120&#xb0; C. and at 20-300 bar.

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Haltern am See, Germany

Dirk Fuchsmann