Abstract: The invention refers to a coating composition which, calculated on dry weight, is comprising at least 20% by weight polyvinyl alcohol and 0.1 to 20% by weight, calculated on the weight of the polyvinyl alcohol, of a water-insoluble (meth)acrylate copolymer comprising quaternary ammonium groups, wherein the viscosity of an aqueous dispersion comprising that coating composition with 25% (w/w) solid content at 22° C. is 200 mPa·s or less.
Abstract: The present invention relates to a novel process for producing ceramic materials, in particular refractory materials having a reduced relative density. In particular, the invention relates to a process for producing light, refractory materials having non-contiguous pores based on shaped and unshaped materials. These materials can be used as working lining in high-temperature applications. The process is based on the production of spherical, closed and isolated pores in the microstructure of the material. The pores having a pore diameter which can be set in a targeted manner are generated by use of polymer particles, in particular polymethacrylates, in particular polymers or copolymers prepared by means of suspension polymerization, as pore formers which can be burnt out. The polymers or copolymers are present in the form of small spheres having a defined diameter.
Type:
Application
Filed:
February 26, 2016
Publication date:
June 23, 2016
Applicant:
Evonik Roehm GmbH
Inventors:
Tadeusz Von Rymon Lipinski, Bruno Keller, Frank Beissmann, Peter Neugebauer, Ruth Kernke, Dirk Poppe
Abstract: The present invention relates to novel light guide plates composed of a reflector film, of a transparent sheet and of, situated between these, reactive hot-melts or colourless thermoplastics applied by structured printing. No fixed direct connection exists here between the reflector film and the transparent sheet. Light guide plates, e.g. in backlight units (BLUs) or in light panels, have maximum uniformity of thickness and are composed of colourless transparent materials. Light is input here by way of example from LED or CCFL light sources by way of one or more edges of the light guide plate. On at least one surface of the light guide plate there is a structure which scatters the light. When a light beam is incident on the said structure, it is scattered at an angle smaller than the angle of total reflection, and is thus emitted from the plate. The light is emitted at both sides of the plate, and on one side there is therefore mostly a white reflector film which is not in optical contact with the plate.
Type:
Application
Filed:
July 3, 2014
Publication date:
June 16, 2016
Applicant:
Evonik Roehm GmbH
Inventors:
Herbert GROOTHUES, Jann SCHMIDT, Wangelis KARAMPOUGIOUKIS, Stephan NEUMAYER, Helmut HAERING, Berthold SCHOENIG
Abstract: The present invention concerns regulating the water content in a process for production of methacrolein. Methacrolein is used in chemical synthesis particularly as an intermediate for production of methacrylic acid, methyl methacrylate or else of active, aroma or flavour chemicals. The present invention is particularly concerned with regulating the water content in a process for production of methacrolein from formaldehyde and propionaldehyde via a Mannich condensation.
Type:
Application
Filed:
July 15, 2014
Publication date:
June 9, 2016
Applicant:
EVONIK ROEHM GMBH
Inventors:
Rudolf BURGHARDT, Frederik GLUTH, Gerhard KOELBL, Steffen KRILL, Torsten BALDUF
Abstract: A method of penetrating a cell where the cell is contacted with a complex that includes (A) a peptide comprising at least 8 consecutive amino acids of the human lactoferrin protein or of the bovine lactoferrin protein; and (B) a cargo molecule bound to the peptide.
Abstract: The invention describes a composition, especially in the form of a 2-component system comprising (meth)acrylated polyether polyols and/or polyester polyols and/or (meth)acrylated hydroxy-functionalized triglycerides with an adjustable pot life, especially for cable potting compounds.
Type:
Grant
Filed:
May 21, 2012
Date of Patent:
May 24, 2016
Assignee:
Evonik Roehm GmbH
Inventors:
Sabine Koemmelt, Gerold Schmitt, Thorben Schuetz, Martina Ebert, Volker Herzog, Joachim Knebel, Mario Gomez Andreu
Abstract: The present invention relates to the oxidative combustion of amine-containing wastewaters, especially in a process for preparing methacrolein. Methacrolein is used in chemical synthesis particularly as an intermediate for preparation of methacrylic acid, methyl methacrylate, or else of active ingredients, odorants or flavorings. More particularly, the present invention relates to an oxidative combustion of the amine-containing wastewaters with only low nitrogen oxide formation.
Type:
Application
Filed:
July 15, 2014
Publication date:
May 19, 2016
Applicant:
EVONIK ROEHM GmbH
Inventors:
Steffen KRILL, Torsten BALDUF, Rudolf BURGHARDT, Gerhard KOELBL, Reed ZHAO
Abstract: The invention relates to a device with a sensor arrangement, which is able to detect magnetic or magnetized oral administration forms after oral take-up, moreover tracks the dissolution thereof via the reduction or disappearance of the magnetic field of the oral administration form, and with a log function, which records a subjective evaluation on the part of the human wearer of the sensor arrangement during or after the oral take-up.
Type:
Application
Filed:
June 6, 2014
Publication date:
May 19, 2016
Applicant:
EVONIK ROEHM GmbH
Inventors:
Benedikt HARTWIG, Peter NIEPOTH, Hans-Joachim STILLER, Steffen JUNGINGER
Abstract: Process for preparing bicyclic or tricyclic (meth)acrylates by reacting (meth)acrylic acid with a bicyclic or tricyclic hydrocarbon which contains at least one double bond using montmorillonite as catalyst.
Type:
Grant
Filed:
November 20, 2012
Date of Patent:
May 17, 2016
Assignee:
EVONIK ROEHM GmbH
Inventors:
Joachim Knebel, Thorben Schuetz, Guenther Graeff, Hedwig Luise Johanna Ohl
Abstract: The present invention relates to a composite system, preferably a multilayer film, having high impact resistance and heat distortion resistance, and to a process for production thereof and to the use thereof.
Type:
Application
Filed:
May 24, 2013
Publication date:
May 5, 2016
Applicant:
Evonik Roehm GmbH
Inventors:
Rüdiger CARLOFF, Gerald DIETRICH, Michael WICKER, Chih-Lung CHEN
Abstract: The invention relates to a plastics laminate in particular for vehicle glazing. The composite is composed of at least three layers, where the two exterior layers are composed of a transparent polymethyl (meth)acrylate (PMMA) and the internal layer is composed of a thermoplastic polyurethane (TPU). The plastics laminate passes the ECE R43 falling-ball test and has better acoustic properties than prior-art plastics composites of the same size.
Type:
Application
Filed:
April 17, 2014
Publication date:
April 14, 2016
Applicants:
EVONIK ROEHM GMBH, BASF SE
Inventors:
Werner HOESS, Arne SCHMIDT, Antonios MANIS
Abstract: The present invention describes a process for preparing alpha-beta-unsaturated carboxylic acids by dehydration of hydroxycarboxylic or alkoxycarboxylic acids which are substituted in the alpha position, in particular 2-hydroxyisobutyric acid, while avoiding accumulation of by-products and additives.
Type:
Application
Filed:
April 28, 2014
Publication date:
March 31, 2016
Applicant:
EVONIK ROEHM GmbH
Inventors:
Alexander MAY, Steffen KRILL, Joerg BECKER, Willi PLOESSER, Marcel TRESKOW, Martin KOESTNER
Abstract: The invention relates to a process for stabilizing the drug release profile of a polymer film coated pharmaceutical composition, wherein the pharmaceutical composition comprises a core comprising an active pharmaceutical ingredient and a polymer film coating onto the core which was applied by a spray coating process, including a subsequent drying step, by applying microwave-irradiation, infrared-irradiation, UV-irradiation or ultra sonic wave irradiation to the polymer film coated pharmaceutical compositions.
Abstract: The present invention relates to a catalyst for reacting carbonitriles with water, wherein the catalyst comprises at least 60% by weight of manganese dioxide with an empirical formula MnOx where x is in the range from 1.7 to 2.0, and at least one plasticizer. The present invention further relates to a process for preparing the catalysts detailed above and to a process for preparing carboxamides by reacting carbonitriles with water in the presence of the present catalyst.
Type:
Grant
Filed:
February 26, 2009
Date of Patent:
March 22, 2016
Assignee:
Evonik Röhm GmbH
Inventors:
Alexander May, Bernd Vogel, Hermann Siegert, Kurt-Alfred Gaudschun, Thomas Quandt
Abstract: This invention relates to a process of preparing highly pure, non-yellowing (meth)acrylic acid necessary for high-tech applications requiring long-tem color stability in the presence of amines. Process for the preparation of highly pure, non-yellowing (meth)acrylic acid comprising the steps: f) Condensation of a (meth)acrylic acid-containing gas phase obtained via a gas phase oxidation process of a C4-compound to generate an aqueous (meth)acrylic acid solution g) Separation of the (meth)acrylic acid from the aqueous (meth)acrylic acid solution to obtain crude (meth)acrylic acid h) Rectification of the crude (meth)acrylic acid to obtain pure (meth)acrylic acid via a sidestream outlet of the rectification column i) Treatment of the pure (meth)acrylic acid generated in step c) with an ion exchange resin j) Distillation of the (meth)acrylic acid generated in step d).
Type:
Grant
Filed:
April 22, 2013
Date of Patent:
March 22, 2016
Assignee:
EVONIK RÖHM GmbH
Inventors:
Zhengfeng Zhang, Gerhard Koelbl, Lorenza Sartorelli, Horst Hiltner, Huisheng Wang, Mirko Michel
Abstract: The present invention relates to a novel process for producing ceramic materials, in particular refractory materials having a reduced relative density. In particular, the invention relates to a process for producing light, refractory materials having non-contiguous pores based on shaped and unshaped materials. These materials can be used as working lining in high-temperature applications. The process is based on the production of spherical, closed and isolated pores in the microstructure of the material. The pores having a pore diameter which can be set in a targeted manner are generated by use of polymer particles, in particular polymethacrylates, in particular polymers or copolymers prepared by means of suspension polymerization, as pore formers which can be burnt out. The polymers or copolymers are present in the form of small spheres having a defined diameter.
Type:
Grant
Filed:
August 23, 2012
Date of Patent:
March 15, 2016
Assignee:
Evonik Röhm GmbH
Inventors:
Tadeusz Von Rymon Lipinski, Bruno Keller, Frank Beissmann, Peter Neugebauer, Ruth Kernke, Dirk Poppe
Abstract: The present invention provides a process for converting a solid (meth)acrylate copolymer into a dispersed form by preparing an aqueous dispersion comprising the components (a) a (meth)acrylate copolymer which is composed of free-radical polymerized methyl methacrylate, ethylacrylate and a salt of 2-trimethylammoniumethyl methacrylate, present in solid form as a powder or as a granulate, (b) up to 50% by weight calculated on the (meth)acrylate copolymer (a) of a dispersing agent selected from the groups of (b) i) plasticizers in combination with emulsifiers and/or (b) ii) pharmaceutically acceptable carbohydrates having 6 to 18 carbon atoms with a functional group and (c) water by mixing the components (a), (b) and (c) to give a suspension which becomes an aqueous dispersion during the conversion of the solid (meth)acrylate copolymer into the dispersed form, characterized in that, the (meth)acrylate copolymer is converted into the dispersed form by means of the presence of the dispersing agent at a temperature
Abstract: The invention relates to a modified fused deposition modeling process for production of multicolored three-dimensional objects. More particularly, the invention relates to a 3D printing process with which 3D objects with particularly good color appearance compared to the prior art can be produced. The process according to the invention is based on coloring of the polymer strand used for production of the actual object in the nozzle, and on using a mixing apparatus which comprises a plurality of injection needles, a static mixer or a dynamic mixer.
Type:
Grant
Filed:
April 3, 2012
Date of Patent:
March 15, 2016
Assignee:
Evonik Röhm GmbH
Inventors:
Markus Pridoehl, Guenter Schmitt, Dirk Poppe, Stephan Kohlstruk, Benjamin Hammann, Sonja Cremer, Kris Beks, Ludo Dewaelheyns
Abstract: The present invention relates to a process for producing methyl methacrylate, comprising the following steps: A) producing methacrolein and B) reacting the methacrolein obtained in step A) in an oxidative esterification reaction to give methyl methacrylate, characterized in that the two steps A) and B) take place in a liquid phase at a pressure of from 2 to 100 bar, and step B) is carried out in the presence of a heterogeneous noble-metal-containing catalyst comprising metals and/or comprising metal oxides.
Type:
Application
Filed:
April 11, 2014
Publication date:
March 10, 2016
Applicant:
Evonik Roehm GmbH
Inventors:
Steffen KRILL, Torsten BALDUF, Martin KÖSTNER, Matthias GRÖMPING, Alexander LYGIN, Rudolf BURGHARDT
Abstract: The invention relates to a modified fused deposition modeling process for production of multicolored three-dimensional objects. More particularly, the invention relates to a 3D printing process with which 3D objects with particularly good color appearance compared to the prior art can be produced. The process according to the invention is based on coloring of the polymer strand used for production of the actual object in the nozzle, and on using a mixing apparatus which comprises a plurality of injection needles, a static mixer or a dynamic mixer.
Type:
Application
Filed:
September 8, 2015
Publication date:
March 3, 2016
Applicant:
EVONIK ROEHM GmbH
Inventors:
Markus PRIDOEHL, Guenter SCHMITT, Dirk POPPE, Stephan KOHLSTRUK, Benjamin HAMMANN, Sonja CREMER, Kris BEKS, Ludo DEWAELHEYNS