Patents Assigned to Covestro Deutschland AG
  • Patent number: 11459424
    Abstract: A process for preparing polycarbonate by the phase interface process in the presence of at least one catalyst, wherein immediately after the optionally first addition of the at least one catalyst, from 0.01 to 20 J/kg of mixing energy is introduced into the system comprising the at least one catalyst within a time of from 2 to 1200 s. A mixture, an organic phase, and a process for distributing at least one catalyst in a system comprising an organic phase and an aqueous phase are also disclosed herein.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: October 4, 2022
    Assignee: COVESTRO DEUTSCHLAND AG
    Inventors: Jan Heijl, Rolf Bachmann, Volker Michele, Felix Cock
  • Patent number: 11447594
    Abstract: The present invention relates to a process for producing translucent polyurethane and polyisocyanurate foams by reaction of a component A comprising A1 at least one polyol reactive with the component B; A2 optionally at least one amine; A3 water and optionally formic acid; A4 at least one foam stabilizer; A5 optionally auxiliary and/or additive substances; A6 optionally at least one flame retardant; A7 at least one catalyst; and a component B comprising B1 at least one aliphatic or cycloaliphatic polyisocyanate component or a combination thereof; and B2 optionally at least one hydrophilized isocyanate; and B3 less than 20 parts by weight of an aromatic polyisocyanate component, wherein the parts by weight of B3 are based on the sum of the parts by weight of B1 to B3 normalized to 100 parts by weight, characterized in that the reaction of the component A with the component B is carried out at an isocyanate index of at least 150, wherein the obtained translucent polyurethane and polyisocyanurate foams have a li
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: September 20, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Lutz Böhnke, Dirk Achten, Robert Maleika
  • Patent number: 11440988
    Abstract: The present invention provides a reaction mixture comprising a blend of a first isocyanate-based uretdione-containing resin and a second isocyanate-based uretdione-containing resin, a neutralized polyol and a tertiary amine catalyst, and optionally, an additive package selected from the group consisting of flow control additives, pigments (colorants), wetting agents, and solvents, wherein the first isocyanate and the second isocyanate are different. The first isocyanate-based uretdione-containing resin and the second isocyanate-based uretdione-containing resin may be cold blended or hot blended. Coatings, adhesives, castings, composites, and sealants made from hot blended formulations exhibit superior performance over those made from cold blended formulations.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: September 13, 2022
    Assignees: Covestro LLC, Covestro Deutschland AG
    Inventors: Alan Ekin, Florian Johannes Stempfle, Alan D. Bushmire
  • Patent number: 11440382
    Abstract: The invention relates to transparent multilayer structures and glazings or glazing elements comprising said multilayer structures, which are suitable for screening an indoor space from a radiation source, comprising, in this order a) optionally a protective layer a, b) a substrate layer based on a thermoplastic polymer, especially an aromatic polycarbonate, having a luminous transmittance in the range of 380 to 780 nm of at least 0.3%, determined at a layer thickness of 4 mm according to DIN ISO 13468-2:2006 (D65, 10°), and a TDS value of less than 40%, determined according to ISO 13837:2008 at a layer thickness of 4 mm, the substrate layer containing at least 0.001 wt.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: September 13, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Alexander Meyer, Rafael Oser, Dirk Hinzmann, Timo Kuhlmann
  • Patent number: 11440242
    Abstract: A process for manufacturing an article comprises the steps of: I) applying a filament of an at least partially fused construction material to a support so as to obtain a layer of the construction material which corresponds to a first selected cross-section of the article; II) applying a filament of the at least partially fused construction material to a previously applied layer of the construction material so as to obtain a further layer of the construction material which corresponds to a further selected cross-section of the article and which is bonded to the previously applied layer; and III) repeating step II) until the article is formed. At least steps II) and III) are carried out in a chamber and the construction material comprises a fusible polymer. The fusible polymer has a fusion range (DSC, differential scanning calorimetry; 2nd heating at a heating rate of 5 K/min.) of ?20° C. to ?100° C.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: September 13, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Dirk Achten, Thomas Büsgen, Dirk Dijkstra, Nicolas Degiorgio, Roland Wagner, Levent Akbas, Peter Reichert, Jörg Büchner
  • Patent number: 11434321
    Abstract: A process for producing rigid PUR/PIR foams via the reaction of a reaction mixture comprising A1 an isocyanate-reactive component, A2 a flame retardant, A3 a blowing agent, A4 a catalyst, and A5 optionally auxiliaries and additives with B an organic polyisocyanate component. Component A1 comprises a diurethane diol A1.1 and a compound A1.2 selected from the group consisting of polyether polyol, polyester polyol, polyether carbonate polyol, and polyether ester polyol. Also disclosed is a rigid PUR/PIR foam, an insulating material, a composite element, and a mixture.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: September 6, 2022
    Assignee: COVESTRO DEUTSCHLAND AG
    Inventors: Hartmut Nefzger, Persefoni Hilken, Urs Rauwald
  • Patent number: 11413854
    Abstract: The invention relates to a multi-layer, preferably co-extruded, plastic film with improved modulus properties, which is suitable, in particular, for producing three-dimensionally shaped articles.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: August 16, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Heinz Pudleiner, Klaus Meyer, Jürgen Winkler, Wolfgang Bräuer, Joerg Nickel, Craig Pehlert, Chunhua Li, Yan Chen
  • Patent number: 11400646
    Abstract: The present invention relates to a method for producing an object, comprising the step of producing the object according to an additive production process from a construction material, wherein the construction material comprises a mixture of a plurality of powdery thermoplastic materials which are different from one another due to at least one mechanical property and at least one thermoplastic material is a thermoplastic polyurethane material. The invention also relates to an object obtained according to said method.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: August 2, 2022
    Assignee: COVESTRO DEUTSCHLAND AG
    Inventors: Dirk Achten, Thomas Büsgen, Bettina Mettmann, Michael Kessler, Peter Reichert, Roland Wagner
  • Patent number: 11390707
    Abstract: The present invention relates to novel polyisocyanurate plastics which are obtainable by catalytic trimerization of a polyisocyanate composition A) which contains oligomeric polyisocyanates and is low in monomeric diisocyanates. “Low in monomeric diisocyanates” means that the polyisocyanate composition A) has a content of monomeric diisocyanates of at most 20% by weight. The invention further relates to the use of these polyisocyanurate plastics for production of coatings, films, semi-finished products and mouldings, and to a process for producing polyisocyanurate plastics comprising the following steps: (a) providing a polyisocyanate composition A) which contains oligomeric polyisocyanates and is low in monomeric diisocyanates, “low in monomeric diisocyanates” meaning that the polyisocyanate composition A) has a content of monomeric diisocyanates of at most 20% by weight; (b) catalytically trimerizing the polyisocyanate composition A).
    Type: Grant
    Filed: June 18, 2018
    Date of Patent: July 19, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Hans-Josef Laas, Dieter Mager, Mathias Matner, Dirk Achten, Heiko Hocke
  • Patent number: 11389791
    Abstract: A process for regenerating a catalyst containing ruthenium or ruthenium compounds, which includes, optionally at elevated temperature, subjecting the catalyst to a hydrogen halide treatment, particularly a gas stream comprising hydrogen chloride, under non-oxidative conditions and, optionally at reduced temperature, to at least a two-stage oxidative post-treatment. The catalyst may have been poisoned by sulfur compounds. After the removal of sulfur, the catalyst is subjected to an oxidative post-treatment.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: July 19, 2022
    Assignee: COVESTRO DEUTSCHLAND AG
    Inventors: Andre Rittermeier, Michael Venz, Thomas Burbach, Timm Schmidt, Tim Loddenkemper, Frank Gerhartz, Walther Müller
  • Patent number: 11383464
    Abstract: A device having at least one pair of free-running cooling rollers for the continuous production of a fibre strip impregnated with polymer, wherein the fibres are continuous fibres and the fibres in the impregnated fibre strip are aligned unidirectionally in the direction of travel of the impregnated fibre strip. Preferably, at least one of the two rollers is equipped with a pair of sealing rings preferably of the same type. Also disclosed is a polymer-impregnated fiber strip, a process for producing a polymer-impregnated fiber strip, and a multilayer composite.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: July 12, 2022
    Assignee: COVESTRO DEUTSCHLAND AG
    Inventors: Christian Wilms, Herbert Börger, Henning Börger
  • Patent number: 11384168
    Abstract: An additive manufacturing method wherein the carrier (400) is within a vessel (100), the vessel contains the free-radically crosslinkable resin (300) and a liquid (200) which is immiscible with the free-radically cross-linkable resin (300) and has a higher density than the free-radically crosslinkable resin (300), such that the free-radically crosslinkable resin (300) floats on top of the liquid (200) and, prior to each step II), the distance between the carrier (400) and the free-radically crosslinkable resin (300) is altered such that a layer of the free-radically crosslinkable resin forms above the uppermost surface (420), viewed in vertical direction, of the previously deposited layer of the construction material (600) and at least partially forms contact with this uppermost surface (420) of the previously deposited layer of the construction material (600). The free-radically crosslinkable resin (300) comprises a urethane (meth)acrylate.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: July 12, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Dirk Achten, Thomas Buesgen, Roland Wagner, Florian Stempfle, Christoph Tomczyk
  • Patent number: 11370874
    Abstract: A process for producing thermoplastic polyoxazolidinone, comprising the following steps: (i) Reaction of a diisocyanate compound (A) with a bisepoxide compound (B) in the presence of a catalyst (C) and a compound (D) in a solvent (E) forming an intermediate compound (F) and (ii) Reaction of a compound (G) with the intermediate (F) formed in step (i), wherein compound (D) is one or more compounds selected from the group consisting of monofunctional isocyanate and monofunctional epoxide, and wherein compound (G) is an alkylene oxide. The invention is also related to the resulting thermoplastic polyoxazolidinone.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: June 28, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Carsten Koopmans, Christoph Guertler, Aurel Wolf, Elena Frick-Delaittre, Kai Laemmerhold, Claudine Rangheard, Timo Breuer
  • Patent number: 11365172
    Abstract: The invention relates to a method for operating a production plant for producing a chemical product (1) by reacting a H-functional reactant (2) with phosgene (3) during an interruption in production when taking at least one plant part of the production plant out of operation, wherein low-oxygen and oxygen-rich phosgene-containing exhaust gas flows are directed separately from one another in different phosgene decomposition directions and separately from one another—at spatially different points—into a combustion device, wherein plant parts that have not been taken out of operation are operated in a closed-circuit operating mode. The invention also relates to a production plant for producing a chemical product by reacting H-functional reactants with phosgene, which is suitable for being operated with the method according to the invention.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: June 21, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Juergen Spriewald, Thomas Knauf, Dirk Manzel, Peter Plathen
  • Patent number: 11359045
    Abstract: The invention relates to a continuous method for producing an isocyanurate-containing isocyanate mixture, in which in a step a) a mixture of a first and a second isocyanate component and an isocyanate group trimerization catalyst is provided; in a step b) the mixture obtained in step a) is reacted in a first residence time zone at an elevated temperature; in a step c), the reaction mixture obtained in step b) is further heated in a second residence time zone, optionally after adding a stopper; and in a step d), the reaction mixture obtained in step c) is cooled down in a third residence time zone by way of lowering the temperature, thus obtaining the desired isocyanurate-containing isocyanate mixture.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: June 14, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Christian Hahn, Hans-Detlef Arntz, Stephan Schubert, Ernst Felske, Claudia Houben, Frank Behrendt
  • Patent number: 11352462
    Abstract: A process for producing rigid PUR/PIR foams comprising A1 an isocyanate-reactive component, A2 a flame retardant, A3 a blowing agent, A4 a catalyst, A5 optionally auxiliaries and additives, and B an organic polyisocyanate component. Component A1 comprises a triurethane triol A1.1 and a compound A1.2 selected from the group consisting of polyether polyol, polyester polyol, polyether carbonate polyol, and polyether ester polyol. Also disclosed is a rigid PUR/PIR foam, an insulating material, a composite element, and a mixture.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: June 7, 2022
    Assignee: COVESTRO DEUTSCHLAND AG
    Inventors: Hartmut Nefzger, Persefoni Hilken, Markus Meuresch, Aurel Wolf
  • Patent number: 11352494
    Abstract: The present invention relates to compositions comprising A) 50 to 90% by weight of at least one representative selected from the group consisting of aromatic polycarbonate, aromatic polyestercarbonate and aromatic polyester, B) 5 to 40% by weight of rubber-based graft polymer or a mixture of rubber-based graft polymer and rubber-free vinyl (co)polymer, C) 3 to 25% by weight of at least one polyether-based polymer or copolymer selected from the group consisting of polyether block polymers and polyether-based polyurethanes, D) 0.8 to 9% by weight of at least one pigment based on titanium dioxide, E) 0 to 20% by weight of one or more further additives, to the use of the compositions for producing moulded articles and to the moulded articles themselves.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: June 7, 2022
    Assignee: Covestro Deutschland AG
    Inventor: Andreas Seidel
  • Patent number: 11351764
    Abstract: The invention relates to a vehicle body part, comprising a multi-layer body, comprising, in this order, a) optionally a protective layer a, b) a substrate layer b based on a thermoplastic polymer, having a light transmittance of less than 1.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: June 7, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Alexander Meyer, Rafael Oser, Dirk Hinzmann, Timo Kuhlmann
  • Patent number: 11345129
    Abstract: The present invention provides a barrier film comprising a first layer formed from thermoplastic polyurethane (TPU) and a second layer formed from a thermoplastic polymer-based coupling agent containing an ethylene-vinyl acetate (EVA) copolymer and a second polar co-monomer polymer, wherein the barrier film has a total thickness of between 50 ?m (2 mil) and 600 ?m (24 mil), wherein the first layer has a thickness of between 20 ?m (0.8 mil) and 400 ?m (16 mil), and wherein the second layer has a thickness of between 20 ?m (0.8 mil) and 200 ?m (8 mil). The inventive barrier film may find use in colostomy, urostomy, and ileostomy pouches and in other medical applications.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: May 31, 2022
    Assignees: Covestro LLC, Covestro Deutschland AG
    Inventors: Dirk Schultze, Lionel Stebbins, Andre Kleinheider, Helge Kosthorst
  • Patent number: 11345775
    Abstract: The present invention relates to a method for producing polyurethane foams by reacting an isocyanate component with an isocyanate-reactive component comprising at least one polyethercarbonate polyol, the reaction taking place in the presence of a component K selected from one or more compounds from the group consisting of K1 esters of mono- or polybasic carboxylic acids whose (first) dissociation has a pKa of 0.5 to 4.0, K2 mono-, di- and polysulfonates of mono- and polyfunctional alcohols, and K3 one or more compounds from the group consisting of K 3.1 esters of phosphoric acid, phosphonic acid, phosphorous acid, phosphinic acid, phosphonous acid and phosphinous acid, these esters each containing no P—OH group, K3.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: May 31, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Bert Klesczewski, Jörg Hofmann, Karsten Malsch, Nicole Welsch, Klaus Lorenz, Hartmut Nefzger, Kai Laemmerhold