Patents Assigned to Evonik Röhm GmbH
  • Patent number: 10584225
    Abstract: Fine-cell PMMA foams are produced using a production process including nucleators in addition to suitable blowing agents. It was found that, surprisingly, a simple-to-produce stable PMMA foam having very fine cells and very good properties can be produced.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: March 10, 2020
    Assignee: Evonik Roehm GmbH
    Inventors: Thomas Richter, Christoph Seipel, Kay Bernhard, Sivakumara K Krishnamoorthy, Sebastian Buehler
  • Patent number: 10556357
    Abstract: The present invention relates to a method for cutting rigid foams, especially slabstock P(M)I foams. A method is provided here, by means of which it is possible to cut these rigid foams even in relatively high layer thicknesses of, for example, more than 3 mm, without material loss, which is produced in relevant amounts, for example, in the course of sawing as a result of the sawdust formed.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: February 11, 2020
    Assignee: Evonik Roehm GmbH
    Inventors: Thomas Richter, Kay Bernhard, Florian Becker, Felix Goldmann, Tim Denk, Ulrich Schmidt, Mathias Hempler
  • Publication number: 20190358940
    Abstract: An extruded matt foil has at least one layer in which glass beads are uniformly distributed in a polymer matrix with at least one fluoropolymer and at least one further layer. The matt foil has a particularly high UV-resistance, a high weathering resistance and excellent mechanical properties. Therefore, the foil is highly suitable for surface-protection of materials such as polyvinyl chloride (PVC) and for use in high-pressure laminates (HPLs).
    Type: Application
    Filed: December 5, 2017
    Publication date: November 28, 2019
    Applicant: Evonik Röhm GmbH
    Inventors: Claude Guénanten, Helmut Häring, Detlef Birth, Max Conrad, Eric Reinheimer, Günther Dickhaut, Ghirmay Seyoum, Wangelis Karampougioukis, Girolamo Musci
  • Publication number: 20190352251
    Abstract: The present invention describes storage-stable glycerol (meth)acrylate carboxylic esters and a method for preparing these esters.
    Type: Application
    Filed: November 14, 2017
    Publication date: November 21, 2019
    Applicant: Evonik Röhm GmbH
    Inventors: Patrik HARTMANN, Marita KAUFMANN, Steffen KRILL, Thorben SCHÜTZ, Marcel TRESKOW, Andrea WITTKOWSKI
  • Publication number: 20190343762
    Abstract: An injection solution contains an organic solvent, a copolymer, which is a poly(lactide-co-glycolide) dissolved in the organic solvent and a pharmaceutical active ingredient which is non-nucleoside inhibitor of the HIV reverse transcriptase or of the HIV integrase, which contains aromatic and heterocyclic aromatic or aromatic and heterocyclic aromatic and aliphatic heterocyclic groups. The content of the pharmaceutical active ingredient is from about 8 to about 25% by weight of the copolymer solution.
    Type: Application
    Filed: July 25, 2019
    Publication date: November 14, 2019
    Applicant: Evonik Roehm GmbH
    Inventors: Norbert WINDHAB, Rima Jaber, Axel Schroeder, Kevin Burton, Tom Tice
  • Publication number: 20190337282
    Abstract: The present invention relates to a novel process for the production of coated filaments for subsequent application as print in extrusion-based 3D printers, e.g. FDM printers (fused deposition modelling printers). The filaments are coated in a separate process outside of the printer, and can also be used in a conventional extrusion printer. The present invention further relates to the coating device for application of the coating to the filament and to a roll containing the coated filaments.
    Type: Application
    Filed: July 15, 2019
    Publication date: November 7, 2019
    Applicant: Evonik Röhm GmbH
    Inventors: Markus PRIDOEHL, Ulrike BEHRENS, Stefan BERNHARDT, Ann-Kristin KLAAR, Samuel von KARSA-WILBERFORCE
  • Patent number: 10466406
    Abstract: A process for producing a light guide plate includes producing a colorless transparent sheet from a colorless transparent material by extrusion with a polishing stack. A printed reflector film is laminated in-line to the colorless transparent sheet. The printed reflector film includes: a thermoplastic reflector film which is opaque white or translucent white and made of a thermoplastic material; and a colorless thermoplastic printed on the thermoplastic reflector film. There is no direct optical contact between the colorless transparent sheet and the thermoplastic reflector film. A glass transition temperature of the printed colorless thermoplastic is above 25° C. and below glass transition temperatures of the colorless transparent material of the colorless transparent sheet and of the thermoplastic material of the thermoplastic reflector film.
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: November 5, 2019
    Assignee: EVONIK ROEHM GmbH
    Inventors: Herbert Groothues, Jann Schmidt, Wangelis Karampougioukis, Stephan Neumayer, Helmut Haering, Berthold Schoenig
  • Patent number: 10457626
    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: Grant
    Filed: October 16, 2018
    Date of Patent: October 29, 2019
    Assignee: EVONIK ROEHM GmbH
    Inventors: Steffen Krill, Torsten Balduf, Martin Koestner, Matthias Groemping, Alexander Lygin, Rudolf Burghardt
  • Publication number: 20190299520
    Abstract: The present invention relates to the technical field of 3D printing, especially in the form of the binder jetting method, in which particulate material in a powder bed is bonded by means of a printed adhesive to form a three-dimensional object. The particulate materials may be inorganic materials, for example sand or a metal powder, or particulate polymeric materials, for example polymethacrylates or polyamides. For this purpose, polymethacrylates may take the form, for example, of suspension polymers, called bead polymers. The present invention relates to the use of porous particles in the binder jetting process, in particular of porous suspension polymers. These powders for 3-D printing differ from the prior art in that the porosity results in a faster and better absorption of the printed binder by the powder particles. A great advantage of this procedure is additionally that a product with less warpage is formed and that the end product has a better surface appearance.
    Type: Application
    Filed: September 11, 2017
    Publication date: October 3, 2019
    Applicant: Evonik Röhm GmbH
    Inventors: Stephan Wieber, Dirk POPPE, Stefan BERNHARDT, Markus PRIDOHL, Sven BALK, Chrisian MEIER, Senada SCHAACK, Thomas HASSKERL
  • Patent number: 10406098
    Abstract: An injection solution can be used in a pharmaceutical dosage formulation. The injection solution includes an organic solvent, a copolymer, which is a poly(lactide-co-glycolide) dissolved in the organic solvent, and a pharmaceutical active ingredient, which is a non-nucleoside inhibitor of the HIV reverse transcriptase or of the HIV integrase, and which contains aromatic and heterocyclic aromatic or aromatic and heterocyclic aromatic and aliphatic heterocyclic groups, where a content of the pharmaceutical active ingredient is from about 8 to about 25% by weight of the copolymer solution.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: September 10, 2019
    Assignee: Evonik Roehm GmbH
    Inventors: Norbert Windhab, Rima Jaber, Axel Schroeder, Kevin Burton, Tom Tice
  • Publication number: 20190264042
    Abstract: This invention is directed to a polymerizable, cold-curing (meth)acrylate system for floor coating.
    Type: Application
    Filed: September 21, 2017
    Publication date: August 29, 2019
    Applicants: Evonik Roehm GmbH, Evonik Corporation
    Inventors: William G. HEIBER, Levi F. SCOTT, Oliver SCHMIDT, Alexander KLEIN
  • Patent number: 10385244
    Abstract: The present invention comprises a single-component binder for heat-sealing applications which can be used for the sealing of polyester foils, in particular of polyethylene terephthalate foils (PET foils) with respect to containers made of polystyrene, of PVC, and of polyester. These polyesters can in particular be polyethylene terephthalate (PET) or polylactic acid (PLA). The binders here feature not only good seal seam strengths but also in particular good transparency and excellent application properties. A substantive aspect of the invention is that the sealing can be achieved without addition of adhesion promoters, in particular without addition of adhesion promoters based on polyvinyl chloride (PVC) or on polyester, and that barrier properties and sealing properties achieved in respect of containers made of PS and of PET are nevertheless at least comparable with, and sometimes better than, those achieved with heat-sealing systems already marketed.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: August 20, 2019
    Assignee: Evonik Roehm GmbH
    Inventors: Andre Hennig, Thomas Arnold, Michael Wicke, Juergen Hartmann, Bruno Keller, Guenter Schmitt, Michael Waldhaus
  • Patent number: 10358552
    Abstract: The invention relates to an impact-modified molding composition, especially impact-modified PMMA, having an improved profile of properties, especially also at elevated temperatures, to molded articles obtainable therefrom and to the use of the molding composition and the molded article.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: July 23, 2019
    Assignee: Evonik Röhm GmbH
    Inventors: Lukas Friedrich Doessel, Reiner Mueller, Werner Hoess, Julian Klitsch
  • Publication number: 20190211124
    Abstract: The present invention relates to novel PMMA foams and the production thereof. Here, polymers which have been obtained by copolymerization of methacrylamides such as N-isopropylmethacrylamide and without styrene are foamed. It has surprisingly been possible to establish that a stable, simple-to-produce PMMA foam which has very good properties, e.g. a very high compressive strength, and can be joined more simply to covering layers, especially in comparison with known PMMA foams, can be obtained according to the invention.
    Type: Application
    Filed: August 31, 2017
    Publication date: July 11, 2019
    Applicant: Evonik Roehm GmbH
    Inventors: Thomas RICHTER, Christoph SEIPEL, Kay BERNHARD
  • Patent number: 10343314
    Abstract: The invention relates to a process for the production of prefoamed poly(meth)acrylimide (P(M)I) particles which can be further processed to give foam mouldings or composites. A feature of this process is that a polymer granulate is first heated and thus prefoamed in an apparatus by means of IR radiation of a wavelength suitable for this purpose. Said granulate can be further processed in subsequent steps, e.g. in a press mould with foaming to give a moulding or a composite workpiece with foam core.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: July 9, 2019
    Assignee: Evonik Roehm GmbH
    Inventors: Kay Bernhard, Ina Liebl, Denis Holleyn, Christoph Seipel
  • Patent number: 10343980
    Abstract: N,N-(di)alkylaminoalkyl(meth)acrylamide or N,N-(di)alkylaminoalkyl (meth)acrylate and/or a quaternary ammonium salt thereof are prepared with a low content of a compound of formula (IV) wherein R5 in each case is a linear, branched or cyclic alkyl radical, an aryl radical which may also be substituted by one or more alkyl groups, the linear, cyclic or branched alkyl radical may have a length of 1-12 carbon atoms and is, for example, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, pentyl, hexyl, heptyl, octyl, isooctyl, nonyl, decyl, undecyl, dodecyl.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: July 9, 2019
    Assignee: Evonik Roehm GmbH
    Inventors: Steffen Krill, Patrik Hartmann
  • Patent number: 10322169
    Abstract: A process for preparing a powder, which includes one or more human coagulation factor proteins and a lactic acid polymer, involves mixing and dispersing a lactic acid polymer with a particle size d50 in the range 0.1-2 ?m and the one or more human coagulation factor proteins in water. The dispersion is dried, and the resulting dried mass is compressed. The resulting compressed dried mass is comminuted to a powder with a particle size d50 in the range of more than 0.5 and up to 5 ?m.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: June 18, 2019
    Assignee: Evonik Roehm GmbH
    Inventors: Juan Tome-Alcalde, Norbert Windhab, Melanie Liefke, Anne Benedikt, Jessica Müller-Albers, Tom Tice, Susanne Ullrich, Andrea Engel, Matthias Germer, Steffen Kistner, Jens Daufenbach
  • Patent number: 10301251
    Abstract: The present invention relates to a process for preparing methyl methacrylate by direct oxidative esterification of methacrolein. Methyl methacrylate is used in large amounts for preparing polymers and copolymers with other polymerizable compounds. In addition, methyl methacrylate is an important synthesis unit for a variety of specialty esters based on methacrylic acid (MAA) which can be prepared by transesterification with the appropriate alcohol. There is consequently a great interest in very simple, economic and environmentally friendly processes for preparing this starting material. In particular the present invention relates to an optimized workup of the reactor effluent from the oxidative esterification of methacrolein by means of which process waste streams can be minimized and process water can be recycled in optimal fashion. The methacrylic acid generated in the process is also optimally recovered and isolated or converted into the commodity alkyl methacrylate.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: May 28, 2019
    Assignee: Evonik Röhm GmbH
    Inventors: Matthias Groemping, Steffen Krill, Alexander Lygin, Milica Lukic, Steffen Finger
  • Publication number: 20190153186
    Abstract: The invention relates to the production of PMI foams, more particularly to their formulating ingredients, which lead to particular facility in adjusting the density at given foaming temperature.
    Type: Application
    Filed: September 6, 2016
    Publication date: May 23, 2019
    Applicant: Evonik Roehm GmbH
    Inventors: Thomas RICHTER, Thomas BARTHEL, Lars BORK, Christoph SEIPEL, Kay BERNHARD
  • Patent number: 10294337
    Abstract: A process for preparing poly(lactide-co-glycolide) copolymer particles with an average particle size in the range of 50-800 nm includes transferring a mixture of poly(lactide-co-glycolide) copolymer, ethanol and carbon dioxide from a first reactor into a second reactor under rapid reduction of the pressure and expansion with phase separation into a gas phase, an ethanol aerosol and an ethanolic suspension containing poly(lactide-co-glycolide) copolymer particles, removing the carbon dioxide gas and the ethanol aerosol from the second reactor, and obtaining the poly(glycolide-co-lactide) copolymer particles in the form of an ethanolic suspension or in dry form from the second reactor.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: May 21, 2019
    Assignee: Evonik Röhm GmbH
    Inventors: Andreas Kirchner, Rosario Lizio, Markus Rolf Rossmeissl, Wolfgang Luley, Johannes Vorholz, Silko Grimm, Marc Schneider