Patents by Inventor Robert Maleika

Robert Maleika has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11000976
    Abstract: The invention relates to a process for producing an optical casting comprising at least one volume-holographic optical element by means of at least one casting operation, the process comprising the following steps: providing a casting mould comprising a first mould section having a flat, spherical, aspherical or free-form first surface and a second mould section having a flat, spherical, aspherical or free-form second surface, the first mould section being connectable to the second mould section to form the casting mould, providing at least one holographic optical element, positioning and aligning the at least one holographic optical element with respect to the first mould section or/and with respect to the second mould section, combining the first and second mould sections to form the casting mould, introducing casting material in one or more casting steps, the casting material having a maximum viscosity at 25° C.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: May 11, 2021
    Assignee: Covestro Deutschland AG
    Inventors: Thomas Fäcke, Robert Maleika, Enrico Orselli, Frank-Stefan Stern
  • Patent number: 10752728
    Abstract: The invention relates to a polyisocyanate which is based on tolylene 2,4-diisocyanate, tolylene 2,6-diisocyanate or a mixture of tolylene 2,4- and 2,6-diisocyanate and has isocyanurate groups, wherein the polyisocyanate has a) a weight average molecular weight of from ?350 to ?800 g/mol, determined by means of gel permeation chromatography using a polystyrene standard and tetrahydrofuran as eluent in accordance with DIN 55672-1:2016-03, b) a polydispersity D of from >1 to ?1.5, where the polydispersity D is the ratio of weight average and number average molecular weight of the polyisocyanate and the weight average and number average molecular weight are in each case determined by means of gel permeation chromatography using a polystyrene standard and tetrahydrofuran as eluent in accordance with DIN 55672-1:2016-03, and c) a content of monomeric tolylene diisocyanate of ?1% by weight, based on the total weight of the polyisocyanate.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: August 25, 2020
    Assignee: Covestro Deutschland AG
    Inventors: Christoph Irle, Stefan Groth, Ruiwen Wu, Antonio Midolo, Robert Maleika, Hongchao Li, Hao Liu
  • Patent number: 10730997
    Abstract: The invention relates to a polyisocyanate mixture comprising at least one polyisocyanurate which is based on tolylene diisocyanate and has isocyanate groups and at least one polyurethane which is based on tolylene diisocyanate and has isocyanate groups, wherein the polyisocyanate mixture has a) a solids content of from ?51 to ?90% by weight, based on the total weight of the polyisocyanate mixture and b) a content of monomeric tolylene diisocyanate of ?0.9% by weight, based on the total weight of the polyisocyanate mixture, and the polyisocyanurate which is based on tolylene diisocyanate and has isocyanate groups has a polydispersity D of from ?1 to ?1.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: August 4, 2020
    Assignee: Covestro Deutschland AG
    Inventors: Christoph Irle, Stefan Groth, Ruiwen Wu, Antonio Midolo, Robert Maleika, Hongchao Li, Hao Liu
  • Publication number: 20200216383
    Abstract: The present invention relates to polyaspartic acid ester compositions which contain polyaspartic acid esters with primary amino groups and small amounts of fumaric acid dialkyl esters, to a method for preparing same and the use thereof as a reactive component for polyisocyanates in two-component polyurethane systems.
    Type: Application
    Filed: September 14, 2018
    Publication date: July 9, 2020
    Inventors: Dorota Greszta-Franz, Jan Weikard, Matthias Wintermantel, Robert Maleika, Thomas Klimmasch, Thomas Schuettler
  • Publication number: 20200040123
    Abstract: The present invention relates to specific translucent, preferably lightfast, polyurethane foams which have a high light transmission and are therefore suitable e.g. for producing translucent polyurethane foams or multilayer composite elements, for example for producing structural components, more particularly as roof elements such as strip lights and light domes, as wall elements such as a panel, in vehicles, in lamps, as furniture, as partitions and in sanitary facilities.
    Type: Application
    Filed: March 28, 2018
    Publication date: February 6, 2020
    Inventors: Lutz BÖHNKE, Dirk ACHTEN, Robert MALEIKA
  • Publication number: 20190270842
    Abstract: The invention relates to a polyisocyanate which is based on tolylene 2,4-diisocyanate, tolylene 2,6-diisocyanate or a mixture of tolylene 2,4- and 2,6-diisocyanate and has isocyanurate groups, wherein the polyisocyanate has a) a weight average molecular weight of from ?350 to ?800 g/mol, determined by means of gel permeation chromatography using a polystyrene standard and tetrahydrofuran as eluent in accordance with DIN 55672-1:2016-03, b) a polydispersity D of from >1 to ?1.5, where the polydispersity D is the ratio of weight average and number average molecular weight of the polyisocyanate and the weight average and number average molecular weight are in each case determined by means of gel permeation chromatography using a polystyrene standard and tetrahydrofuran as eluent in accordance with DIN 55672-1:2016-03, and c) a content of monomeric tolylene diisocyanate of ?1% by weight, based on the total weight of the polyisocyanate.
    Type: Application
    Filed: October 18, 2017
    Publication date: September 5, 2019
    Applicant: COVESTRO DEUTSCHLAND AG
    Inventors: Christoph IRLE, Stefan GROTH, Ruiwen WU, Antonio MIDOLO, Robert MALEIKA, Hongchao LI, Hao LIU
  • Publication number: 20190270843
    Abstract: The invention relates to a polyisocyanate mixture comprising at least one polyisocyanurate which is based on tolylene diisocyanate and has isocyanate groups and at least one polyurethane which is based on tolylene diisocyanate and has isocyanate groups, wherein the polyisocyanate mixture has a) a solids content of from ?51 to ?90% by weight, based on the total weight of the polyisocyanate mixture and b) a content of monomeric tolylene diisocyanate of ?0.9% by weight, based on the total weight of the polyisocyanate mixture, and the polyisocyanurate which is based on tolylene diisocyanate and has isocyanate groups has a polydispersity D of from ?1 to ?1.
    Type: Application
    Filed: October 18, 2017
    Publication date: September 5, 2019
    Applicant: COVESTRO DEUTSCHLAND AG
    Inventors: Christoph IRLE, Stefan GROTH, Ruiwen WU, Antonio MIDOLO, Robert MALEIKA, Hongchao LI, Hao LIU
  • Patent number: 10294198
    Abstract: The invention relates to a method for producing the isomers 1,3- and/or 1,4-xylylene diisocyanates by reacting the corresponding 1,3- and/or 1,4-xylylene diamines with phosgene in the gaseous phase.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: May 21, 2019
    Assignee: COVESTRO DEUTSCHLAND AG
    Inventors: Reinhard Halpaap, Ralph Weber, Josef Sanders, Frank Richter, Elsa Karoline Schadlich, Armin Schymura, Martin Ehrig, Sebastian Hoch, Robert Maleika
  • Patent number: 10252988
    Abstract: The invention relates to a composition for producing transparent polythiourethane bodies containing or consisting of A) a polyisocyanate component containing at least one polyisocyanate with a functionality of isocyanate groups of at least 2 per molecule, B) a thiol component containing at least one polythiol with a functionality of thiol groups of at least two per molecule, in addition to optionally C) auxiliary agents and additives, the ratio of isocyanate groups to groups reactive in relation to isocyanates being 0.5:1 to 2.0:1. The composition is characterized in that the polyisocyanate of the polyisocyanate component A) is produced by a gas-phase phosgenation of aliphatic, cycloaliphatic, aromatic or araliphatic polyamines.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: April 9, 2019
    Assignee: Covestro Deutschland AG
    Inventors: Robert Maleika, Fredie Langenstueck, Christoph Eggert, Irene C. Latorre Martinez, Josef Sanders
  • Publication number: 20180009931
    Abstract: A composition comprising an isocyanate component A) comprising at least one cycloaliphatic or araliphatic diisocyanate, a polyol component B) comprising at least one polyol having an OH number of 80 to 1000 mg KOH/g, an additive component C) comprising at least one internal demoulding agent, and a catalyst component D) comprising at least one inorganic metal complex as thermally latent catalyst, characterized in that the thermally latent catalyst has a quotient of reaction rates between catalysed reaction and uncatalysed reaction at 30° C. of =5.0 and at 60° C. of =1.1. The present invention further provides a process for producing an elastomer and for the use of the composition for production of transparent shaped bodies.
    Type: Application
    Filed: January 13, 2016
    Publication date: January 11, 2018
    Inventors: Robert MALEIKA, Frank-Stefan STERN, Frank RICHTER, Dorota GRESZTA-FRANZ, Hans-Josef LAAS
  • Publication number: 20170368723
    Abstract: The invention relates to a process for producing an optical casting comprising at least one volume-holographic optical element by means of at least one casting operation, the process comprising the following steps: providing a casting mould comprising a first mould section having a flat, spherical, aspherical or free-form first surface and a second mould section having a flat, spherical, aspherical or free-form second surface, the first mould section being connectable to the second mould section to form the casting mould, providing at least one holographic optical element, positioning and aligning the at least one holographic optical element with respect to the first mould section or/and with respect to the second mould section, combining the first and second mould sections to form the casting mould, introducing casting material in one or more casting steps, the casting material having a maximum viscosity at 25° C.
    Type: Application
    Filed: January 13, 2016
    Publication date: December 28, 2017
    Inventors: Thomas FÄECKE, Robert MALEIKA, Enrico ORSELLI, Frank-Stefan STERN
  • Publication number: 20170210702
    Abstract: The invention relates to a method for producing the isomers 1,3- and/or 1,4-xylylene diisocyanates by reacting the corresponding 1,3- and/or 1,4-xylylene diamines with phosgene in the gaseous phase.
    Type: Application
    Filed: April 13, 2015
    Publication date: July 27, 2017
    Inventors: Reinhard Halpaap, Ralph Weber, Josef Sanders, Frank Richter, Elsa Karoline Schadlich, Armin Schymura, Martin Ehrig, Sebastian Hoch, Robert Maleika
  • Publication number: 20170121449
    Abstract: The invention relates to a composition for producing transparent polythiourethane bodies containing or consisting of A) a polyisocyanate component containing at least one polyisocyanate with a functionality of isocyanate groups of at least 2 per molecule, B) a thiol component containing at least one polythiol with a functionality of thiol groups of at least two per molecule, in addition to optionally C) auxiliary agents and additives, the ratio of isocyanate groups to groups reactive in relation to isocyanates being 0.5:1 to 2.0:1. The composition is characterised in that the polyisocyanate of the polyisocyanate component A) is produced by a gas-phase phosgenation of aliphatic, cycloaliphatic, aromatic or araliphatic polyamines.
    Type: Application
    Filed: April 13, 2015
    Publication date: May 4, 2017
    Inventors: Robert MALEIKA, Fredie LANGENSTUECK, Christoph EGGERT, Irene C. LATORRE MARTINEZ, Josef SANDERS
  • Publication number: 20170029552
    Abstract: The invention relates to a composition for producing transparent polythiourethane bodies, containing or consisting of A) a polyisocyanate component that contains at least one polyisocyanate having an isocyanate group functionality of at least 2 per molecule, B) a thiol component that contains at least one polythiol having a thiol group functionality of at least 2 per molecule, and if appropriate, C) auxiliary and additional agents, the ratio of isocyanate groups to groups that are reactive to isocyanates being between 0.5:1 to 2.0:1, and said composition being characterised in that it also contains D) at least one aromatic nitrile. The invention also relates to a method for producing transparent polythiourethane bodies by reacting such a composition, to the polythiourethane bodies produced in this manner, to the use of aromatic nitriles for producing transparent polythiourethane bodies, and to a mixture of a polyisocyanate and an aromatic nitrile.
    Type: Application
    Filed: April 13, 2015
    Publication date: February 2, 2017
    Inventors: Robert MALEIKA, Fredie LANGENSTUECK, Christoph EGGERT, Irene C. LATORRE MARTINEZ, Frank-Stefan STERN, Josef SANDERS
  • Patent number: 8753739
    Abstract: The present invention relates to a multi-layer product, the first layer being a UV-cured protective layer which contains SiO2 nanoparticles, and the second layer containing a thermoplastic substrate. In addition, the invention relates to the composition of the UV-curable first layer, a process for the production of the multi-layer products and products, such as e.g. glazing products, which contain the named multi-layer products.
    Type: Grant
    Filed: April 3, 2007
    Date of Patent: June 17, 2014
    Assignee: Bayer MaterialScience AG
    Inventors: Frank Buckel, Robert Maleika, Walter Koehler, Reiner Meyer
  • Patent number: 8722778
    Abstract: Compositions, suitable for coating surfaces, methods for their preparation and for coating surfaces therewith, where said compositions comprise: (a) 100,000 parts by weight of a primer composition comprising a binder material (a1), a primer solvent (a2) and a UV absorber (a3), wherein the primer composition is suitable as an adhesion-promoting agent between a thermoplastic substrate and a siloxane-based top coat; (b) 0 to 900,000 parts by weight of a solvent, and (c) 1 to 3000 parts by weight of a compound according to the general formula (I): wherein X represents a moiety selected from the group consisting —OR6, —OCH2CH2OR6, —OCH2CH(OH)CH2OR6 and —OCH(R7)COOR8, wherein R6 represents a branched or unbranched C1-C13 alkyl, C2-C20 alkenyl, C6-C12 aryl or —CO—C1-C18 alkyl, R7 represents H or a branched or unbranched C1-C8 alkyl, and R8 represents a C1-C12 alkyl, a C2-C12 alkenyl or a C5-C6 cycloalkyl, and wherein the composition has a viscosity of 40 s to 140 s measured in accordance with DIN EN ISO 2431 at
    Type: Grant
    Filed: October 20, 2008
    Date of Patent: May 13, 2014
    Assignee: Bayer MaterialScience AG
    Inventors: Gunther Stollwerck, Robert Maleika, Frank Buckel, Peter Capellen
  • Patent number: 8652623
    Abstract: The invention relates to multilayer products comprising a layer (A) and a layer (B), wherein layer (A) contains polyalkyl(alkyl)acrylate and has a layer thickness <25 [mu]m, and layer (B) contains polycarbonate. The total thickness of layers (A) and (B) is 20 to 500 mm.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: February 18, 2014
    Assignee: Bayer MaterialScience AG
    Inventors: Heinz Pudleiner, Robert Maleika, Birgit Meyer Zu Berstenhorst, Frank Buckel, Klaus Meyer
  • Publication number: 20120135213
    Abstract: The invention relates to multilayer products comprising a layer (A) and a layer (B), wherein layer (A) contains polyalkyl(alkyl)acrylate and has a layer thickness <25 [mu]m, and layer (B) contains polycarbonate. The total thickness of layers (A) and (B) is 20 to 500 mm.
    Type: Application
    Filed: May 4, 2010
    Publication date: May 31, 2012
    Applicant: Bayer MaterialScience AG
    Inventors: Heinz Pudleiner, Robert Maleika, Birgit Meyer Zu Berstenhorst, Frank Buckel, Klaus Meyer
  • Publication number: 20120101210
    Abstract: The invention relates to novel aqueous two-component coating agents based on hydroxy and/or amino-functional water-dilutable resins and nanoparticle-modified isocyanate-functional curing agents, to a method for the production thereof, and to the use thereof in paints, coatings, and sealants, particularly for corrosion protection applications.
    Type: Application
    Filed: March 23, 2010
    Publication date: April 26, 2012
    Applicant: Bayer MaterialScience AG
    Inventors: Arno Nennemann, Oliver Pyrlik, Hans-Josef Laas, Carmen Imöhl, Robert Maleika
  • Patent number: 8092901
    Abstract: A multilayer product characterized by its improved weatherability and mechanical properties is disclosed. The product contains a layer A containing a member selected from the group consisting of transparent thermoplastic material and a lacquer, the member containing at least one UV absorber, a layer B containing a transparent thermoplastic material and containing at least one colorant, and a layer C containing a transparent thermoplastic material. Also disclosed is a process for the preparation of the inventive multilayer product.
    Type: Grant
    Filed: December 5, 2002
    Date of Patent: January 10, 2012
    Assignee: Bayer MaterialScience AG
    Inventors: Rüdiger Gorny, Siegfried Anders, Wolfgang Nising, Wolfgang Ebert, Robert Maleika, Martin Döbler, Melanie Möthrath