Patents by Inventor Dirk Achten

Dirk Achten 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: 11225545
    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: Grant
    Filed: March 28, 2018
    Date of Patent: January 18, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Lutz Böhnke, Dirk Achten, Robert Maleika
  • Publication number: 20220001619
    Abstract: The present invention relates to a method for functionalizing a workpiece surface, comprising the following steps: a) providing a workpiece; b) providing a film; c) functionalizing at least one film side by the location-selective application of a functionalization composition comprising a polymer material onto part of the film side in one or more layers by means of a 3D printing process; d) creating an integrally bonded or interlocking connection between the workpiece surface and the film functionalized in step c) by bringing the film into contact with at least part of the workpiece surface, wherein the integrally bonded or interlocking connection to the workpiece surface is achieved with a functionalized film side. The invention further relates to workpieces having a surface functionalized according to the invention.
    Type: Application
    Filed: December 2, 2019
    Publication date: January 6, 2022
    Inventors: Dirk Achten, Nicolas Degiorgio, Jonas Kuenzel, Jari Birth, Thomas Buesgen
  • Patent number: 11213999
    Abstract: A method of applying a material comprising a fusible polymer comprises the step of: applying a filament of the at least partly molten material comprising a fusible polymer from a discharge opening of a discharge element to a first substrate. The fusible polymer has the following properties: a melting point (DSC, differential scanning calorimetry; 2nd heating at heating rate 5° C./min) within a range from ?35° C. to ?150° C.; a glass transition temperature (DMA, dynamic-mechanical analysis to DIN EN ISO 6721-1:2011) within a range from ??70° C. to ?110° C.; wherein the filament, during the application process, has an application temperature of ?100° C. above the melting point of the fusible polymer for ?20 minutes. There are furthermore blocked NCO groups present in the material comprising the fusible polymer.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: January 4, 2022
    Assignee: Covestro Intellectual Property GmbH & Co. KG
    Inventors: Dirk Achten, Thomas Buesgen, Joerg Tillack, Fabian Schuster, Nicolas Degiorgio, Jonas Kuenzel, Joerg Buechner, Wolfgang Arndt, Martin Melchiors, Harald Kraus
  • Publication number: 20210388153
    Abstract: The present invention relates to the coating of wires with coatings which are obtained by crosslinking blocked polyisocyanates. The coatings are characterized in that they are substantially free of urethane groups and the crosslinking of the monomers is predominantly effected by isocyanurate groups.
    Type: Application
    Filed: October 18, 2017
    Publication date: December 16, 2021
    Inventors: Florian GOLLING, Saskia BEUCK, Dirk ACHTEN, Gesa BEHNKEN
  • Publication number: 20210380753
    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 component B; A2 optionally at least one amine; A3 water and optionally formic acid or at least one physical blowing agent or mixtures thereof; 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 more than or equal to 10 parts by weight and up to 70 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 which are normalized to 100 parts by weight.
    Type: Application
    Filed: October 1, 2019
    Publication date: December 9, 2021
    Inventors: Lutz BÖHNKE, Dirk ACHTEN, Hans-Josef LAAS, Ann-Christin BIJLARD
  • Patent number: 11192293
    Abstract: A process is described for producing a three dimensional structure, the process including the following steps a) applying of at least a first material M1 onto a substrate to build a first layer L1 on the substrate; b) layering of at least one further layer Ly of the first material M1 or of a further material Mx onto the first layer L1, wherein the at least one further layer Ly covers the first layer L1 and/or previous layer Ly-1 at least partially to build a precursor of the three dimensional structure; c) curing the precursor to achieve the three dimensional structure; wherein at least one of the materials M1 or Mx provides a Mooney viscosity of >10 ME at 60° C. and of <200 ME at 100° C. before curing. Also, a three dimensional structure is described which is available according to the process according to the invention.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: December 7, 2021
    Assignee: Covestro Deutschland AG
    Inventors: Dirk Achten, Thomas Büsgen, Dirk Dijkstra, Roland Wagner
  • Publication number: 20210354376
    Abstract: The invention relates to a method for producing a treated object, comprising the steps: a) producing an object by means of additive manufacturing, the object being produced by the repeated arrangement, layer by layer, of at least one first material on a substrate spatially selectively in accordance with a cross-section of the object, the method comprising the additional method step: b) at least partially bringing the object, which is still on the substrate or has already been detached from the substrate and which has been produced by additive manufacturing, into contact with a liquid heated to ?T or a powder bed of a second material heated to ?T for a time ?1 minute in order to obtain the treated object, T standing for a temperature of ?25° C. The invention further relates to an object produced by a method of this type.
    Type: Application
    Filed: November 7, 2019
    Publication date: November 18, 2021
    Inventors: Dirk Achten, Frank-Stefan Stern, Christoph Tomczyk, Roland Wagner, Bettina Mettmann, Thomas Buesgen, Nicolas Degiorgio, Jonas Kuenzel, Maximilian Wolf
  • Publication number: 20210324177
    Abstract: The present invention relates to a fibre-reinforced 3D-printed elastic product (1, 3, 4, 7, 10, 12), wherein the product comprises a weight proportion of ?50% of a polymer having a mean molecular weight of ?5000 g/mol, measured by means of GPC, and a weight proportion of ?0.5% and ?20% of one or more fibres having an aspect ratio of ?100 and a length of ?3 cm and ?1000 cm, the product being produced at least in part by means of an FFF (Fused Filament Fabrication) method, and the product having a tensile modulus of ?1.5 GPa in the region of the fibre reinforcement and in the direction of the fibre symmetry axis. The product also has a tensile modulus, measured according to DIN EN ISO 527-1, of ?1.2 GPa in the region of the fibre reinforcement and perpendicular to the fibre symmetry axis, and has a yield strength of ?5%, measured according to DIN EN ISO 527-1, perpendicular to the fibre symmetry axis.
    Type: Application
    Filed: September 10, 2019
    Publication date: October 21, 2021
    Inventors: Dirk Achten, Nicolas Degiorgio, Jonas Kuenzel, Thomas Buesgen
  • Publication number: 20210315668
    Abstract: The present invention relates to an orthodontic splint made of a crosslinked polymer, wherein the crosslinked polymer has a glass transition temperature Tg, determined by means of dynamic-mechanical analysis at a frequency of 1/s DMA as peak tan ?, of ?25° C. and ?60° C., a modulus of elasticity, determined by means of dynamic-mechanical analysis as the storage modulus E? at a frequency of 1/s at 35° C., of ?500 MPa and ?4000 MPa, and a loss factor tan ?, determined by means of dynamic-mechanical analysis at a frequency of 1/s at 35° C., of ?0.08. The invention further relates to a process for producing such splints.
    Type: Application
    Filed: September 18, 2019
    Publication date: October 14, 2021
    Inventors: Dirk Achten, Roland Wagner, Christoph Tomczyk, Thomas Buesgen
  • Patent number: 11130278
    Abstract: The invention relates to a print head (100) for an additive fused deposition modelling method having a thermoplastic construction material, comprising:—at least one inlet (10) for receiving a construction material (11) into the print head;—at least one melt region, for melting the construction material (11), which is arranged downstream of the inlet (10) and is fluidically connected, at least temporarily, to the inlet (10); and—at least one first outlet (30) that is fluidically connected, at least temporarily, to the melt region (20), for discharging melted construction material (12) out of the melt region (29) at a first discharge rate; wherein—the print head (100) also comprises at least one second outlet (40) that is fluidically connected, at least temporarily, to the melt region (20) for discharging melted or non-melted construction material (11, 12) out of the melt region (20) at a second discharge rate; and—the first discharge rate can be influenced by a first discharge rate influencing device (50) for
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: September 28, 2021
    Assignee: Covestro Deutschland AG
    Inventors: Dirk Achten, Thomas Büsgen, Levent Akbas, Nicolas Degiorgio, Jonas Künzel
  • Patent number: 11124682
    Abstract: The present invention relates to the use of hydrophilized polyisocyanates for the production of water-diluted coating compositions which have a polymeric polyol content of not more than 10%.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: September 21, 2021
    Assignee: Covestro Deutschland AG
    Inventors: Dirk Achten, Florian Golling, Frank Sicking, Olaf Fleck, Martin Melchiors, Christoph Thiebes
  • Patent number: 11124672
    Abstract: The present invention relates to the use of hydrophilized polyisocyanates for the production of water-diluted coating compositions.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: September 21, 2021
    Assignee: Covestro Deutschland AG
    Inventors: Dirk Achten, Florian Golling, Frank Sicking, Olaf Fleck, Jan Weikard
  • Publication number: 20210252778
    Abstract: A method of applying a material comprising a fusible polymer comprises the step of: applying a filament of the at least partly molten material comprising a fusible polymer from a discharge opening of a discharge element to a first substrate. The fusible polymer has the following properties: a melting point (DSC, differential scanning calorimetry; 2nd heating at heating rate 5° C./min) within a range from ?35° C. to ?150° C.; a glass transition temperature (DMA, dynamic-mechanical analysis to DIN EN ISO 6721-1:2011) within a range from ??70° C. to ?110° C.; wherein the filament, during the application process, has an application temperature of ?100° C. above the melting point of the fusible polymer for ?20 minutes. There are furthermore blocked NCO groups present in the material comprising the fusible polymer.
    Type: Application
    Filed: July 12, 2019
    Publication date: August 19, 2021
    Inventors: Dirk Achten, Thomas Buesgen, Joerg Tillack, Fabian Schuster, Nicolas Degiorgio, Jonas Kuenzel, Joerg Buechner, Wolfgang Arndt, Martin Melchiors, Harald Kraus
  • Publication number: 20210245424
    Abstract: A method of applying a material comprising a fusible polymer comprises the step of: applying a filament of the at least partly molten material comprising a fusible polymer from a discharge opening of a discharge element to a first substrate. The fusible polymer has the following properties: a melting point (DSC, differential scanning calorimetry; 2nd heating at heating rate 5° C./min) within a range from ?35° C. to ?150° C.; a glass transition temperature (DMA, dynamic-mechanical analysis to DIN EN ISO 6721-1:2011) within a range from ??70° C. to ?110° C.; wherein the filament, during the application process, has an application temperature of ?100° C. above the melting point of the fusible polymer for ?20 minutes. There are still free NCO groups in the material including the fusible polymer.
    Type: Application
    Filed: July 12, 2019
    Publication date: August 12, 2021
    Inventors: Dirk Achten, Thomas Buesgen, Joerg Tillack, Fabian Schuster, Ralf Rott, Nicolas Degiorgio, Jonas Kuenzel, Joerg Buechner, Wolfgang Arndt, Martin Melchiors, Harald Kraus
  • Publication number: 20210246255
    Abstract: The invention relates to a method for producing a polyisocyanate polymer and to the polyisocyanate polymer obtainable from the method and to the use thereof as part of a two-stage method for producing a polyisocyanurate plastic, in particular for producing coatings, films, semi-finished products or molded parts containing such a polyisocyanurate plastic.
    Type: Application
    Filed: May 13, 2019
    Publication date: August 12, 2021
    Applicant: Covestro Intellectual Property GmbH & Co. KG
    Inventors: Heiko HOCKE, Mathias MATNER, Dirk ACHTEN, Hans-Josef LAAS, Dieter MAGER
  • Publication number: 20210238341
    Abstract: The present invention relates to urethane, thiourethane and urea adducts of tertiary amines and the use thereof as catalysts for the crosslinking of aliphatically, cycloaliphatically, araliphatically or aromatically bonded isocyanate groups with one another. The catalysts according to the invention have the particular advantage that they are thermolatent.
    Type: Application
    Filed: April 12, 2019
    Publication date: August 5, 2021
    Inventors: Richard Meisenheimer, Paul Heinz, Dirk Achten, Frank-Stefan Stern, Andreas Hecking, Fee Strobel
  • Publication number: 20210222752
    Abstract: The invention relates to a method for producing a viscoelastic damping body (1, 20, 30), comprising at least one spring element (4) and at least one damping element coupled thereto, wherein the method is characterized in that the damping element and optionally also the spring element (4) are produced by means of a 3-D printing method. The invention further relates to a viscoelastic damping body (1, 20, 30) that is or can be produced according to such a method and to a volume body comprising or consisting of a plurality of such damping bodies (1, 20, 30).
    Type: Application
    Filed: May 30, 2017
    Publication date: July 22, 2021
    Inventors: Thomas BÜSGEN, Dirk ACHTEN, Nicolas DEGIORGIO, Jürgen HÄTTIG, Peter REICHERT
  • Publication number: 20210214487
    Abstract: The present invention relates to a method for preparing composite materials made of polyethylene fibers having an ultra-high molecular weight and cross-linked polyisocyanates, to the composite materials obtainable therefrom and to the use of such composite materials for producing components. The invention also relates to components consisting of or containing a composite material according to the invention.
    Type: Application
    Filed: May 13, 2019
    Publication date: July 15, 2021
    Inventors: Paul HEINZ, Dirk ACHTEN, Dirk DIJKSTRA, Heiko HOCKE
  • Publication number: 20210154899
    Abstract: A method for producing a foam body (10) having an internal structure (100, 200, 300), comprising the steps: I) selecting an internal structure (100, 200, 300) to be formed in the foam body (10), the structure comprising a first polymer material; II) providing a foam body (10), the foam body (10) comprising a second polymer material which is different to the first polymer material; III) injecting, by means of an injection means (20), a predefined amount of a melt of the first polymer material or a predefined amount of a reaction mixture (30, 31, 32) which reacts to form the first polymer material at a predefined location inside the foam body (10), corresponding to a volume element of the internal structure (100, 200, 300); IV) repeating step III) for further predefined locations inside the foam body (10), corresponding to further volume elements of the internal structure (10), until the internal structure (10) is formed.
    Type: Application
    Filed: February 8, 2021
    Publication date: May 27, 2021
    Inventors: Dirk Achten, Rebecca Heil, Rolf Albach, Michael Ehlers, Dorothee Clasen, Sascha Praet, Adam Pajonk
  • Publication number: 20210155747
    Abstract: The present invention relates to the use of tertiary amines as catalysts for the cross-linking of isocyanate groups which are aliphatically and/or cyclo-aliphatically bonded. The catalysts according to the invention have the particular advantage that they are thermally latent.
    Type: Application
    Filed: April 12, 2019
    Publication date: May 27, 2021
    Inventors: Richard Meisenheimer, Paul Heinz, Dirk Achten, Frank-Stefan Stern