Evonik Degussa Gmbh

Degussa Aktiengesellschaft

Other

Evonik Operations Gmbh

Evonik Rohm Gmbh

Evonik Industries Ag

Harald Haeger

Martin Roos

Franz-Erich Baumann

Guido Schmitz

Georg Oenbrink

Thomas Haas

Hans Ries

Hans-Georg Joerg Hennemann

Ralf Richter

Peter Hannen

Steffen Schaffer

Mirja Wessel

Wilfried Bartz

Roland Wursche

Andreas Pawlik

Martin Wielpuetz

Markus Hartmann

Jan Berger

Jasmin Nitsche

Ralf Meier

Jan Christoph Pfeffer

Andreas Martin

Juergen Herwig

Markus Poetter

Frank-Martin Petrat

Angela Koeckritz

Ralf Schueler

Luca Cameretti

Frank Erhardt

Michael Beyer

Kirsten Alting

Heinz Peirick

Petra Poetschke

Jens Doering

Sylvia Anita Hermasch

Beate Krause

Guido Walther

Robert Socher

Guido Stochniol

Dietrich Maschmeyer

Michael Grass

Wolfgang Lortz

Christoph Batz-Sohn

Stephan Peitz

Maik Grebe

Sylvia Monsheimer

Werner Hoess

Thomas Tacke

Klaus Albrecht

Oliver Thum

Horst-Werner Zanthoff

Wolfgang Diekmann

Helene Reeker

Giselher Franzmann

Markus Pridoehl

Thomas Hasskerl

Andreas Karau

Thorsten Eggert

Jasmin Berger

Reinhard Beuth

Benjamin Woldt

Florian Boeck

Daniel Demicoli

Sonja Bollmann

Andreas Schmid

Kristiane Warnke

Volker Sieber

Lars Mathias Blank

Klaus Gahlmann

Peter Welters

Martin Himmelmann

Heiko Andrea

Stefan Boehm

Jens Deutsch

Joerg Schallenberg

Katrin Grammann

Michael Volland

Thorsten Mahrholz

Heike Stemmer

Ralf Kelle

Krzysztof Sado

Lars Herbeck

Klaus Dilger

Guido Jach

Bruno Buehler

Jasmin Gielen

Matthias Ullrich

Christian Baron

Hans-Peter Hauck

Andrea Weckbecker

Anja Schubert

Andreas Pfennig

Tobias Stroehlein

Marie-Dominique Przybylski-Freund

Katrin Schullehner

Jasmin Corthals

Wilfried Bluemke

Michaela Hauberg

Lothar Jakisch

Bernd Lalla

The invention provides a process for reacting a carboxylic acid ester of the formula (I)R-A-COOR&#x2003;&#x2003;(I),

Process for reacting a carboxylic acid ester

Multiple layer film and composite material produced therefrom

Mixtures containing dipentyl terephthalate, dinonyl terephthalate and pentyl nonyl terephthalate can be prepared with a predetermined distribution of the individual esters in the mixture, and used as plasticizers.

Pentyl nonyl terephthalates

A process for the combined preparation of a butene and an octene from ethene, proceeds by: a) providing a solvent having a boiling point or boiling range above the boiling points of the butenes and below the boiling points of the octenes and wherein the solvent is an inert solvent or is hexene alone or is hexene admixed with pentane or hexane or heptane or is a mixture of pentane, hexane, and heptane; b) providing a first feed mixture containing at least the solvent and ethene dissolved therein; c) providing a second feed mixture containing at least hexene, the solvent and also ethene dissolved in the solvent and/or in the hexene; d) transferring the first feed mixture into a first synthesis and the second feed mixture into a second synthesis, wherein the first and second syntheses are physically separated from one another; e) oligomerizing of at least part of the ethene present in the first feed mixture in the presence of a first heterogeneous catalyst and in the presence of the solvent in the first synthesis to give a first reaction mixture comprising at least the solvent, butene and hexene; f) separating a butene-containing low boiler fraction from the first reaction mixture or from a stream based on the first reaction mixture; g) separating an intermediate boiler fraction containing hexene and the solvent from the first reaction mixture or from a stream based on the first reaction mixture; h) using at least part of the intermediate boiler fraction in the course of providing the second feed mixture; and i) reacting at least part of the ethene present in the second feed mixture with at least part of the hexene present in the second feed mixture in the presence of a second heterogeneous catalyst and in the presence of the solvent in the second synthesis to give a second reaction mixture comprising at least octene and the solvent.

Combined preparation of butene and octene from ethene

Disclosed herein is a polymer powder containing a polyamide of AB type, produced by polymerizing at least one lactam having from 10 to 12 carbon atoms in a monomer unit or by polycondensing at least one corresponding &#x3c9;-aminocarboxylic acid having from 10 to 12 carbon atoms in a monomer unit, and a polyamide of AABB type, produced by polycondensing at least one diamine and at least one dicarboxylic acid having respectively from 10 to 14 carbon atoms in monomer units. The polyamide of the AB type and the polyamide of the AABB type are prepared separately and then coprecipitated to form the polymer powder, and the polymer powder is a physical mixture of the polyamide of the AB type and the polyamide of the AABB type. Also disclosed herein is a method for producing the polymer powder.

Polyamide-based polymer powder, use thereof in a molding method, and molded articles made from said polymer powder

A multilayer film containing layers of polyamide and polyester, suitable as a back cover for a photovoltaic module is provided. The film comprises, in the order listed: a) a layer which comprises at least 35% by weight of polyamide; c) a layer which comprises at least 35% by weight, of a thermoplastic polyester; and e) a layer which comprises at least 35% by weight of polyamide; wherein the layers a) and e) further comprise 0.1 to 60% by weight, of a polyamine-polyamide graft copolymer, or the layer c) further comprises 0.1 to 30% by weight of polyamine-polyamide graft copolymer. The polyamine-polyamide graft copolymer comprises as copolymerized monomers: a polyamine having at least 4 nitrogen atoms and at least one polyamide-forming unit selected from the group consisting of a lactam, an &#x3c9;-aminocarboxylic acid and an equimolar combinations of a diamine and a dicarboxylic acid. In another embodiment, adhesion promoting layers are placed between the layers.

Multilayer film with polyamide and polyester layers for the production of photovoltaic modules

A corrosion protected metal pipe for installation in an offshore structure or for producing a pipeline laid in water is provided. The metal pipe has an at least two-layer covering on the pipe with a lower layer facing the pipe and an upper layer on a side of the lower layer not facing the pipe is provided. The layers are formed such that the lower layer is electrically conductive and the upper layer is electrically insulating, the lower layer is optically contrasting to the upper layer, or the lower layer is electrically conducting and optically contrasting to the upper layer and the upper layer is electrically insulating. Thus, in the event of damage to the layer or layers lying above, a visual or electrical signal can be detected. Damage to the corrosion protection covering can therefore be detected easily and, if appropriate, reported by remote monitoring.

Wear indicator system for offshore corrosion protection covering systems

A moulding composition contains at least 40 wt % of components a) and b). Based on the sum of components a) and b), there are 60-99 wt % of component a) and 40-1 wt % of component b). Component a) is a partially aromatic copolyamide containing, as polymerized monomer units, 30-90 mol % of a combination of hexamethylenediamine and terephthalic acid and 70-10 mol % of a combination of hexamethylenediamine and a linear aliphatic dicarboxylic acid having 8-19 C atoms. Component b) is an olefinic copolymer containing, as polymerized monomer units, i) 35-94.9 wt % of ethene-based monomer units, ii) 5-65 wt % of monomer units based on a 1-alkene having 4-8 C atoms, iii) 0-10 wt % of monomer units based on an olefin different from i) and ii), and iv) 0.1-2.5 wt % of monomer units based on an aliphatically unsaturated dicarboxylic acid anhydride, where the sum of wt % of i), ii), iii) and iv) is 100%.

Moulding compound based on a partially aromatic copolyamide

The present invention relates to a method for removing an organic compound from an aqueous solution, comprising the steps of providing the aqueous solution which contains the organic compound, and a hydrophobic organic solution, where the latter comprises a liquid hydrophobic cation exchanger, contacting the aqueous solution and the hydrophobic organic solution, and separating off the hydrophobic organic solution from the aqueous solution, wherein the liquid hydrophobic cation exchanger is a saturated alkanoic acid having at least one alkyl substituent, where the organic compound is an organic compound having at least one positive charge and a neutral or positive total charge.

Branched-chain fatty acids as liquid cation exchangers

The invention relates to a whole-cell catalyst which expresses a recombinant &#x3b1;-dioxygenase or the combination of a recombinant fatty acid reductase and a phosphopantetheinyl transferase which phosphopantetheinylates the fatty acid reductase, and which expresses, in addition to the &#x3b1;-dioxygenase and/or the combination of fatty acid reductase and phosphopantetheinyl transferase, a transaminase, wherein the phosphopantetheinyl transferase and/or transaminase is preferably recombinant; and also to a process for converting a carboxylic acid or dicarboxylic acid or a monoester thereof to an amine or diamine, comprising the steps of contacting the carboxylic acid or dicarboxylic acid or the monoester thereof with a phosphopantetheinylated fatty acid reductase or an &#x3b1;-dioxygenase and contacting the product with a transaminase.

Producing amines and diamines from a carboxylic acid or dicarboxylic acid or a monoester thereof

The invention provides a whole cell catalyst which expresses a recombinant &#x3b1;-dioxygenase or the combination of a recombinant fatty acid reductase and a phosphopantetheinyl transferase phosphopantetheinylating the fatty acid reductase, and which in addition to the &#x3b1;-dioxygenase and/or the combination of fatty acid reductase and phosphopantetheinyl transferase expresses a transaminase, characterized in that the phosphopantetheinyl transferase and/or transaminase is preferably recombinant; and a method for the conversion of a fatty acid, &#x3c9;-hydroxy fatty acid, &#x3c9;-oxo fatty acid or a monoester thereof to an amine, comprising oxidation of the fatty acid, &#x3c9;-hydroxy fatty acid, &#x3c9;-oxo fatty acid or the monoester thereof to an oxidation product by contacting with an alkane hydroxylase and/or alcohol dehydrogenase, contacting the oxidation product with a phosphopantetheinylated fatty acid reductase or a &#x3b1;-dioxygenase to give an aldehyde, and contacting the aldehyde with a transaminase.

Production of omega-amino fatty acids

The invention relates to a method for oxidizing a fatty acid or an ester thereof of formula (I) H3C &#x2014;(CH2)n-COOR, wherein R is selected from the group that comprises H, methyl, ethyl, propyl, and butyl, wherein n is 0 to 30, preferably 6 to 24, comprising the step of oxidizing the fatty acid or the ester thereof by contacting the fatty acid or the ester thereof with a cytochrome P450 monooxygenase of the CYP153 family in the presence of molecular oxygen and NAD(P)H and a whole-cell catalyst that expresses a recombinant cytochrome P450 monooxygenase of the CYP153 family, a recombinant alcohol dehydrogenase, a recombinant transaminase, and optionally one or more than one recombinant enzyme from the group comprising alanine dehydrogenase, ferredoxin, and ferredoxin reductase, and the use of said whole-cell catalyst to oxidize a fatty acid or an ester thereof.

Enzymatic omega-oxidation and omega-amination of fatty acids

A method for coating of a metallic article is provided. According to the method, the metal surface is coated with a composition which comprises a polymer or comprises a two-component system that reacts to form a polymer following application to the metal surface. The composition comprises 70-2700 meq/kg olefinic double bonds which leads to stronger adhesion and to increased corrosion resistance.

Coated metallic article

Cyclododecanone (CDON) is prepared by epoxidizing cyclododecene (CDEN) to epoxycyclododecane (CDAN epoxide), and rearranging the CDAN epoxide to CDON to obtain a mixture comprising said CDON and cyclododecane (CDAN), wherein CDAN is separated from the CDON-containing mixture and oxidized to CDON.

Process for preparing cyclododecanone

Cyclododecanone (CDON) is prepared by epoxidizing cyclododecene (CDEN) to epoxycyclododecane (CDAN epoxide), and rearranging the CDAN epoxide to CDON to obtain a mixture comprising said CDON and CDEN, wherein CDEN is separated from the CDON-containing mixture and sent to the epoxidation to CDAN epoxide in step a.

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Luedinghausen, Germany

Harald Haeger