Abstract: A curable composition can have a surface with amphiphilic properties which is thus able to counteract biofouling. The curable composition includes: a component A: at least one polysiloxane, a component B: at least one polyether bearing silyl groups and/or a reaction product of a polyether bearing silyl groups with one or more isocyanate-containing compounds, and a component C: at least one catalyst.
Type:
Application
Filed:
September 27, 2018
Publication date:
March 28, 2019
Applicant:
Evonik Degussa GmbH
Inventors:
Michael Fiedel, Thorsten Marochow, Doreen Engel, Frank Schubert, Anke Lewin
Abstract: The invention provides a process for production of polyurethane systems by reacting at least one polyol component with at least one isocyanate component in the presence of one or more catalysts for the isocyanate-polyol and/or isocyanate-water reactions and/or the trimerization of isocyanate, wherein said reacting is carried out in the presence of carrier material and polyamine P.
Type:
Application
Filed:
September 11, 2018
Publication date:
March 28, 2019
Applicant:
Evonik Degussa GmbH
Inventors:
Eva Emmrich-Smolczyk, Mladen Vidakovic, Kai-Oliver Feldmann, Annegret Terheiden
Abstract: The present invention relates to compounds based on adducts with isocyanates. The present invention further relates to a method for preparation thereof, compositions comprising these compounds and also use thereof as, or for producing, coatings.
Abstract: A first composition (A) contains (i) at least one compound (I) selected from the group consisting of triallyl isocyanurate, and triallyl cyanurate, wherein the compound (I) is preferably triallyl isocyanurate, and (ii) at least one bis(alkenylamide) compound. A second composition (B) contains the first composition (A) and at least one polyolefin copolymer. The composition (B) is used for the production of a film for encapsulation of an electronic device, especially a solar cell.
Type:
Grant
Filed:
December 18, 2015
Date of Patent:
March 19, 2019
Assignee:
Evonik Degussa GmbH
Inventors:
Daniel Ulbricht, Marcel Hein, Frank Kleff, Stephanie Schauhoff, Juergen Ohlemacher
Abstract: The present invention relates to a process for operating a plant for preparing an alkanesulfonic acid, wherein said alkanesulfonic acid is prepared by oxidation of an alkylmercaptan, dialkydisulfide and/or dialkylpolysulfide and the one or more alkyl radicals of the alkylmercaptan, dialkydisulfide and/or dialkylpolysulfide are identical with the alkyl radical of the alkylsulfonic acid to be prepared, characterized in that the oxidation is performed in the presence of an at least stoichiometric amount of an oxoacid of nitrogen, e.g.
Type:
Application
Filed:
September 12, 2018
Publication date:
March 14, 2019
Applicant:
Evonik Degussa GmbH
Inventors:
Benjamin Fonfe, Chiu Kee Cheung, Ali Hartwig, Nadine Duerr
Abstract: The present invention relates to a process for preparing molybdenum-bismuth-iron-cobalt-based multielement oxide catalysts by means of hydrothermal synthesis, wherein the hydrothermal synthesis is conducted with an aqueous solution and/or an aqueous suspension of precursor compounds of the elements present in the multielement oxide catalyst to be prepared, the pH of which has been adjusted to a value between about 6 and about 8. The present invention also further relates to the multielement oxide catalysts obtainable by this process and to the use thereof in the partial gas phase oxidation of olefins and tert-butanol.
Type:
Application
Filed:
March 13, 2017
Publication date:
March 14, 2019
Applicant:
Evonik Degussa GmbH
Inventors:
Paul SPRENGER, Jan-Dierk GRUNWALDT, Wolfgang KLEIST, Achim FISCHER
Abstract: The production of 2-propylheptanol described here is effected via Rh-catalyzed hydroformylation of C4-olefin to afford C5-aldehyde, aldol condensation to afford the C10-aldehyde and hydrogenation to afford the C10-alcohol. The emphasis is on the hydroformylation and the ligand employed therein. The problem addressed by the invention is that of reducing the costs of 2PH production. This problem is solved when a cheaper catalyst system which simultaneously achieves a better regioselectivity is employed in the hydroformylation.
Type:
Grant
Filed:
August 2, 2016
Date of Patent:
March 12, 2019
Assignee:
EVONIK DEGUSSA GmbH
Inventors:
Katrin Marie Dyballa, Robert Franke, Dirk Fridag, Markus Schwarz, Hermann-Josef Schulte-Althoff, Frank Geilen
Abstract: The object of the invention is to specify a process with which both C5 and C9 aldehydes can be produced economically. Here, the process should be able to to be supplied with the lowest possible dependence on raw material suppliers and also should be able to react flexibly to fluctuations in demand with respect to C5 and C9 aldehydes. The use of resources should also be optimized. The process proposed uses LPG or NGL as raw material. The process according to the invention essentially differs from known LPG-based processes in that the intermediate obtained, after dehydrogenation and removal of by-products, is divided into two portions. C9 aldehyde is produced from the first portion by oligomerization and hydroformylation while C5 aldehyde is obtained by hydroformylation of the second portion. This has the critical advantage that it is possible to divide the intermediate flexibly into the two portions so that either more C5 or more C9 aldehydes can be produced depending on the respective demand.
Type:
Grant
Filed:
August 29, 2017
Date of Patent:
March 12, 2019
Assignee:
Evonik Degussa GmbH
Inventors:
Guido Stochniol, Andreas Wolff, Stephan Peitz
Abstract: 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.
Type:
Grant
Filed:
January 22, 2016
Date of Patent:
March 12, 2019
Assignee:
Evonik Degussa GmbH
Inventors:
Benjamin Willy, Jochen Niemeyer, Guenter Kreilkamp, Beatrix Vom Bruch, Manfred Neumann, Michael Keup
Abstract: The invention relates to a composition for use in a Monosil process for the crosslinking of thermoplastic polyolefins which comprises (i) from 5 to 60% by weight content of caprylic acid (H3C(CH2)6COOH), (ii) content of at least one monounsaturated organofunctional alkoxysilane of the general formula I A-SiR2x(OR1)3-x??(I), where R1 is mutually independently a linear or branched hydrocarbon moiety having from 1 to 4 C atoms, R2 is methyl and x is 0 or 1 and A is a monovalent olefin group of the formula (R3)2C?C(R3)-Mk-, where k is 0 or 1, in which groups R3 are identical or different and R3 is a hydrogen atom or a methyl group and the group M is a group from this list: —CH2—, —(CH2)2—, —(CH2)3— and C(O)O—(CH2)3—, (iii) content of at least one free-radical generator and (iv) optionally content of at least one other component, where the entirety of all components (i) to (iv) gives 100% by weight.
Abstract: The present invention relates to a process for the preparation of an alkanesulfonic acid by oxidation of a sulfur containing starting compound with an oxygen containing fluid, wherein the sulfur containing starting compound is provided in a reaction system, comprising a reaction vessel (1) with an expansion vessel (2) on its top, wherein the reaction vessel and the expansion vessel are connected to allow a flow of a fluid stream from the reaction vessel into the expansion vessel.
Type:
Application
Filed:
September 5, 2018
Publication date:
March 7, 2019
Applicant:
Evonik Degussa GmbH
Inventors:
Benjamin FONFE, Chiu Kee CHEUNG, Ali HARTWIG
Abstract: 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.
Type:
Grant
Filed:
May 23, 2017
Date of Patent:
March 5, 2019
Assignee:
Evonik Degussa GmbH
Inventors:
Eike Langkabel, Martina Ortelt, Dirk Fuchsmann, Jaclyn Balthasar, Alexander Martin Rüfer, Anne Rittsteiger, Jörg-Joachim Nitz, Stephan Kohlstruk
Abstract: The invention relates to novel quaternary amino alcohol functional organosilicon compounds, aqueous compositions containing the latter, and a method for their production, in particular in the form of oligomers and polymers which can be present in the partially or fully hydrolyzed form and are in particular water-soluble. The compositions comprise only an extremely small portion of VOCs. The invention further relates to their use, preferably in the production of inkjet photographic papers.
Type:
Grant
Filed:
May 4, 2017
Date of Patent:
March 5, 2019
Assignee:
Evonik Degussa GmbH
Inventors:
Christian Wassmer, Burkhard Standke, Stefan Scharfe, Christoph Batz-Sohn, Andrea Heuschen
Abstract: A process for dehydrating alkanes in which such feedstock mixtures may be used having a high proportion of olefins, i.e. approximately 1% by weight to 10% by weight. Specifically, alkenes having two to five carbon atoms are generated from alkanes having the same carbon length where the number of carbon atoms not change during by the dehydrogenation. The process is intended to be feasible on an industrial scale. A basic concept of the invention consists of hydrogenating alkenes present in the feedstock to the corresponding alkanes before they come in contact with the dehydrogenation catalyst. This avoids an undesired coke deposit. The hydrogenation is effected by minimal addition of hydrogen (80% to 120% of the stoichiometrically required amount). The hydrogenation is effected either over a dehydrogenation catalyst, or over the dehydrogenation catalyst itself.
Abstract: The present invention relates to a process for refining glyceride oil comprising the steps of: (i) contacting glyceride oil with a liquid comprising a basic quaternary ammonium salt to form a treated glyceride oil; wherein the quaternary ammonium salt comprises a basic anion selected from hydroxide, alkoxide, alkylcarbonate, hydrogen carbonate, carbonate, serinate, prolinate, histidinate, threoninate, valinate, asparaginate, taurinate and lysinate; and a quaternary ammonium cation; (ii) separating the treated glyceride oil from a salt comprising the quaternary ammonium cation; and (iii) subjecting the treated glyceride oil after the separation step to at least one further refining step; and to the use of contacting a glyceride oil with the basic quaternary ammonium salt for preventing or reducing the formation of fatty acid esters of chloropropanols and/or glycidol upon heating of the glyceride oil.
Type:
Grant
Filed:
May 27, 2016
Date of Patent:
March 5, 2019
Assignee:
Evonik Degussa GmbH
Inventors:
Gabriela Fedor, Martin Philip Atkins, Peter Goodrich, Christopher Klatt Hamer, Daniel Witthaut, Ulrich Boes
Abstract: The invention relates to a hydrophobic silica powder which is unprecedentedly insensitive to environmental humidity with which electrophotographic toner can possess stable electro static charge that leads to stable quality of printed image. The hydrophobic silica powder has the following physicochemical properties; average primary particle size (D) is 30-2000 nm, B*D<430 nm, while B stands for weight % of adsorbed water vapor on silica (100 weight %) when the partial pressure of water to the equilibrium vapor pressure of water at 25° C. is 80% and D stands for average primary particle size (nm) of the silica powder, B/C<2.7, while C stands for weight % of adsorbed water vapor on silica (100 weight %) when the partial pressure of water to the equilibrium vapor pressure of water at 25° C. is 20%, and carbon content>0.30 wt.-%.
Abstract: The invention relates to the use of polyether modified short-chain siloxanes in agiculture in order to increase agronomic yield, a method for irrigation, and a kit containing at least one polyether modified short-chain siloxane, and an irrigation system.
Type:
Application
Filed:
March 2, 2017
Publication date:
February 28, 2019
Applicant:
Evonik Degussa GmbH
Inventors:
René HÄNSEL, Daniela KRUSE, Ewald SIEVERDING, Carsten RIEDL, Jordi SAMSO LUDWIG
Abstract: Propene is continuously reacted with hydrogen peroxide in a tube bundle reactor comprising a multitude of parallel reaction tubes in the presence of a titanium silicalite catalyst arranged as a fixed bed in the reaction tubes. A cooling jacket encloses the reaction tubes, which has a feed point for cooling medium near the entry of the reaction tubes, a withdrawal point for cooling medium near the end of the reaction tubes and at least one additional withdrawal point upstream of the withdrawal point near the end of the reaction tubes. Cooling medium is fed to the feed point for cooling medium, a part of the cooling medium is withdrawn at the at least one additional withdrawal point and the remainder exits at the withdrawal point near the end of the reaction tubes.
Type:
Grant
Filed:
November 1, 2016
Date of Patent:
February 26, 2019
Assignees:
Evonik Degussa GmbH, thyssenkrupp Industrial Solutions AG
Inventors:
Marc Brendel, Manfred Bärz, Johannes Kowoll, David Bolz, Willi Hofen, Jürgen Schemel, Bernd Jaeger, Niels Bredemeyer, Bärbel Kolbe, Norbert Ullrich, Michael Dopfer, Wolfgang Wöll, Peter Porscha, Dana Pfenning, Maik Bernhard
Abstract: The process for preparing 1,2-propanediol from propene and hydrogen peroxide comprises the steps of a) reacting propene with hydrogen peroxide in the presence of a catalyst mixture comprising a phase transfer catalyst and a heteropolytungstate, wherein the reaction is carried out in a liquid mixture comprising an aqueous phase having a pH of at most 6 and an organic phase, b) separating the biphasic mixture from step a) into an aqueous phase and an organic phase comprising propene oxide, c) recycling the propene oxide present in the separated organic phase into the reaction of step a) and d) separating 1,2-propanediol from the aqueous phase separated in step b).
Type:
Grant
Filed:
November 1, 2016
Date of Patent:
February 26, 2019
Assignee:
Evonik Degussa GmbH
Inventors:
Holger Wiederhold, David Bolz, Bernd Jaeger, Hans-Jürgen Köhle, Sebastian Imm, Georg Friedrich Thiele
Abstract: 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.
Type:
Grant
Filed:
May 24, 2017
Date of Patent:
February 26, 2019
Assignee:
Evonik Degussa GmbH
Inventors:
Eike Langkabel, Martina Ortelt, Dirk Fuchsmann, Jaclyn Balthasar, Alexander Martin Rüfer, Anne Rittsteiger, Jörg-Joachim Nitz, Stephan Kohlstruk