Patents Assigned to Covestro Deutschland AG
  • 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: 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: 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: 11345812
    Abstract: The invention relates to the use of PMMI copolymers for reducing the molecular weight degradation of the polymer induced by oxides such as titanium dioxide or silicon dioxide in compositions based on aromatic polycarbonate. The mechanical, optical and rheological properties of the thermoplastic composition remain good and are in some cases even improved despite the addition of the PMMI copolymer.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: May 31, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Tim Hungerland, Tanja Cassel
  • Patent number: 11346021
    Abstract: The invention relates to melt spun multifilaments based on thermoplastic polyurethane, their production and the use of said melt spun multifilaments to produce technical textiles and clothing such as socks, stockings, compression textiles like medical bandage, surgical hose, orthopedic elastic bandage, sport textiles, underwear etc.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: May 31, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Christian Wamprecht, Jochen Norwig, Christoph Gürtler, Pavan Manvi, Gunnar Seide, Thomas Gries
  • 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
  • Patent number: 11332570
    Abstract: The present invention relates to a composition for preparing flexible foams and the application thereof. The composition comprises the following components: a. an isocyanate mixture comprising: a1) an aliphatic and/or alicyclic isocyanate monomer, and a2) an aliphatic and/or alicyclic; isocyanate trimer, wherein the mass ratio of said monomer to said trimer is in a range of 3:1-200:1; b. a polymer polyol mixture comprising: b1) a first polyether polyol having a number average molecular weight of not less than 3000 g/mol with an ethylene oxide content of 5-20 wt. %, b2) a second polyether polyol having a number average molecular weight of not less than 3000 g/mol with an ethylene oxide content of more than 60 wt. %, wherein the mass ratio of said first polyether polyol to said second polyether polyol is in a range of 4:1-100:1; c. an isocyanate-reactive group comprising compound having a number average molecular weight of 32-400 g/mol; d. a catalyst; e. a foaming agent; and f.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: May 17, 2022
    Assignee: COVESTRO DEUTSCHLAND AG
    Inventors: Dong Bo Zhao, Weicheng Wu, Zoe Deng, Demi Tang, Liqiang Li
  • Patent number: 11326018
    Abstract: A method for the production of polyoxazolidinone compounds, comprising the step of reacting an isocyanate compound (A) with an epoxide compound (B) in the presence of a catalyst (C), wherein the isocyanate compound (A) comprises a isocyanate compound (A1) wherein the a isocyanate compound (A1) comprising at least two isocyanate groups (I1?2), preferred two isocyanate groups (I1=2), wherein the epoxide compound (B) comprises a epoxide compound (B1) and an epoxide compound (B2), wherein the epoxide compound (B2) is different from the epoxide compound (B1) wherein the epoxide compound (B1) comprising at least two terminal epoxide groups (F1?2), preferred two terminal epoxide groups (F1=2), linked together by a linking group (L1) and the epoxide compound (B2) comprising at least two terminal epoxide groups (F2?2)), preferred two terminal epoxide groups (F2=2), linked together by a linking group (L2), wherein the linking group (L2) comprises acyclic and covalent bonds to each other free of conjugated multiple bond
    Type: Grant
    Filed: August 16, 2017
    Date of Patent: May 10, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Anna Weber, Claudine Rangheard, Michael Kessler, Walter Leitner, Christoph Gürtler, Carsten Koopmans, Thomas Ernst Müller
  • Publication number: 20220135755
    Abstract: The invention relates to a multilayer body comprising at least one substrate layer, a metal layer bonded directly thereto and optionally at least one protective layer atop the metal layer, wherein the substrate layer comprises a composition which is obtained by mixing polycarbonate, talc and a specific wax. It was shown that the multilayer bodies obtained are particularly suitable for use as reflectors and (housing) components for light sources and heat sources and displays.
    Type: Application
    Filed: December 12, 2018
    Publication date: May 5, 2022
    Applicant: Covestro Deutschland AG
    Inventors: Christopher SCHIRWITZ, Michael ERKELENZ, Birte SÄMISCH, Rainer PROTTE, Martin DÖBLER, Eckhard WENZ
  • Patent number: 11319398
    Abstract: Method for the production of polyoxazolidinone compounds, comprising the reaction of at least one biscarbamate compound (A) with at least one bisepoxide compound (B) in the presence of at least one base (D), at least one Lewis acid catalyst (E), and optionally at least one compound (C), wherein the compound (C) comprising a mono-carbamate group, a mono-isocyanate group and/or a mono-epoxide group, and wherein the base (D) having a pKb-value of ?9. The invention is also related to the resulting polyoxazolidinone compounds.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: May 3, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Thomas Ernst Müller, Christoph Gürtler, Carsten Koopmans, Volker Marker, Claudine Rangheard, Walter Leitner
  • Patent number: 11312812
    Abstract: The present invention describes a process for producing an elastomer, preferably a polyurethane-containing elastomer, by reacting a polyol component (A) comprising at least one polyether carbonate polyol (A-1) containing carbon-carbon double bonds with a component (B) which is reactive with OH groups and contains at least one compound reactive toward OH groups, preferably an isocyanate component (B-1) containing NCO groups, in the presence of a free-radical initiator (C), preferably at least one peroxide (C-1), and optionally a catalyst (D), where the molar ratio of the OH-reactive groups of component (B) reactive with groups, to the OH groups of the polyol component (A) containing carbon-carbon double bonds, is greater than 1.0. It further relates to elastomers obtainable by such a process, preferably polyurethane elastomers, the use thereof, and two-component systems for production of elastomers, preferably polyurethane elastomers.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: April 26, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Jochen Norwig, Volker Marker, Jens Langanke, Aurel Wolf, Christoph Gürtler, Philipp Nicholas Wagner, Florian Kessler
  • Patent number: 11298886
    Abstract: A process for joining two sheeting articles reinforced with unidirectionally aligned endless-fibres by ultrasonic welding, wherein the fibres are embedded in a matrix of polycarbonate and the sheeting articles have abutting ends that are substantially rectangular and substantially even. The process comprises (1) arranging the sheeting articles next to one another end-to-end in the region of the abutting ends in a welding apparatus between a sonotrode and an anvil, (2) welding the sheeting articles by means of ultrasound, wherein the sonotrode and the anvil exert pressure on the to-be-welded sheeting articles in the melting region between the sheeting articles and perpendicularly to the abutting ends of the sheeting articles, and (3) removing the sheeting articles that are welded to one another from the welding apparatus. Also provided is a second process for joining two sheeting articles, a sheeting article, an apparatus, and a multilayer composite.
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: April 12, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Matthias Knaupp, Thomas Grimm, Henning Börger
  • Patent number: 11299577
    Abstract: A process for producing thermoplastic polyoxazolidinone comprising copolymerization 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), wherein the catalyst (C) is selected from the group consisting of alkali halogenides and earth alkali halogenides, and transition metal halogenides, compound (D) is selected from the group consisting of monofunctional isocyanate, monofunctional epoxide, and wherein the process comprises step (?) of placing the solvent (E) and the catalyst (C) in a reactor to provide a mixture, and adding the diisocyanate compound (A), the bisepoxide compound (B) and the compound (D) in step (?) to the mixture resulting from the step (?). The invention is also related to the resulting thermoplastic polyoxazolidinone.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: April 12, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Carsten Koopmans, Christoph Guertler, Aurel Wolf, Elena Frick-Delaittre, Kai Laemmerhold, Claudine Rangheard, Timo Breuer
  • Patent number: 11292215
    Abstract: The present invention relates to a method of coating a polyurethane pultrusion composite material, comprising: a) preparing a polyurethane pultrusion composite material by a polyurethane pultrusion process, the polyurethane pultrusion process comprising: impregnating a fiber reinforcing material with polyurethane resin, and then curing the impregnated fiber reinforcing material in a mold to provide a polyurethane pultrusion composite material; and b) drawing the polyurethane pultrusion composite material to leave the mold, and then on-line applying waterborne coating(s) to the polyurethane pultrusion composite material at a temperature ranging from 30 to 90° C. The method according to the present invention can achieve a good coating to the polyurethane pultrusion composite material.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: April 5, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Lily Tang, James Chen, Zhijiang Li
  • Patent number: 11292864
    Abstract: The present invention provides a reaction mixture comprising a hot blend of a first isocyanate-based uretdione resin and a second isocyanate-based uretdione 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 isocyanate-based uretdiones that have been hot blended together produce coatings, adhesives, castings, composites, and sealants, which exhibit better performance properties (such as microhardness) than those coatings, adhesives, castings, composites, and sealants produced from the constituent isocyanate-based uretdiones alone.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: April 5, 2022
    Assignees: Covestro LLC, Covestro Deutschland AG
    Inventors: Alan Ekin, Florian Johannes Stempfle, Alan D. Bushmire
  • Patent number: 11286332
    Abstract: The invention relates to novel modified polyisocyanurate plastics, obtainable by means of catalytic trimerization of a composition (A), wherein the composition (A) contains oligomeric, modified polyisocyanates (B), which represent a reaction product from an oligomeric polyisocyanate (B1) and at least one functionalization reagent (B2) which is reactive to isocyanate groups, wherein the composition (A) comprises a content of monomeric diisocyanates of 20 wt % at maximum and wherein the at least one functionalization reagent (B2) which is reactive to isocyanate groups has at least one relative functional group which is reactive to isocyanate groups and which is not an isocyanate group. The invention further relates to the method by which the polyisocyanurate plastics according to the invention are obtainable, to the use of the polyisocyanurate plastics according to the invention for producing coatings, films, semi-finished products, composite materials and molded parts, and substrates coated by such a coating.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: March 29, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Dirk Achten, Mathias Matner, Hans-Josef Laas, Jan Weikard, Dieter Mager, Florian Golling