Patents by Inventor Thomas Büsgen

Thomas Büsgen 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: 11555088
    Abstract: The invention relates to a method for producing an object from a construction material, the construction material comprising radically crosslinkable groups, NCO groups and groups having Zerewitinoff active H atoms, and the object being a three-dimensional object and/or a layer. During and/or after the production of the object, the construction material is heated to a temperature of >50° C., and the construction material comprises one or more cyclic tin compounds of formula F-I, F-II and/or F-III.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: January 17, 2023
    Assignee: Covestro Deutschland AG
    Inventors: Dirk Achten, Thomas Büsgen, Christoph Tomczyk, Jan Weikard, Frank Richter, Roland Wagner
  • Publication number: 20220411569
    Abstract: A method for producing an object comprises the step of producing the object by means of an additive manufacturing process from a construction material. The construction material comprises a first polyurethane polymer which has: a weight percentage ratio of O to N of ?2 to ?2.5, determined by elementary analysis; a weight percentage ratio of N to C of ?0.1 to ?0.25, determined by elementary analysis; a full-width at half maximum of the melting peak of ?20 K, determined by dynamic differential scanning calorimetry DSC (2nd heating at heating rate 20 k/min); and a difference between the melting temperature and the recrystallisation temperature of ?5 K and ?100 K, determined by dynamic differential scanning calorimetry DSC (2nd heating) at a heating and cooling rate of 20 K/min.
    Type: Application
    Filed: December 14, 2020
    Publication date: December 29, 2022
    Inventors: Dirk ACHTEN, Thomas BUESGEN, Mathias MATNER, Bettina METTMANN, Bernd GARSKA, Michael KESSLER, Peter REICHERT, Roland WAGNER, Thomas PRENVEILLE
  • Patent number: 11504906
    Abstract: The invention relates to a method for producing a three-dimensional object by means of a powder-based additive production method from at least one first powdery material, wherein the at least one first powdery material comprises at least one first compound having a first reactive group a). The first reactive group a) is selected from the group consisting of an isocyanate group, a blocked isocyanate group, or a mixture thereof. The invention further relates to a component produced using the method according to the invention, and to powdery material that is suited for the method according to the invention.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: November 22, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Dirk Achten, Thomas Buesgen, Thomas Faecke, Bettina Mettmann, Joerg Buechner, Hans-Josef Laas, Ting Liu
  • Publication number: 20220362991
    Abstract: The invention relates to a method for modifying an object comprising the step of: I) providing an object which is made at least partially of a construction material comprising a thermoplastic polyurethane. The method also comprises the following steps: II) contacting, at least in part, the construction material, for a first predetermined period of time, with a first liquid comprising ?80% by weight, based on the total weight of the first liquid, of a polar aprotic solvent; III) contacting, for a second predetermined period of time, the areas of the construction material that were in contact with the liquid in step II) with a second liquid comprising ?80% by weight, based on the total weight of the second liquid, of a polar protic solvent. Preferably, the first liquid is DMSO or acetone and the second liquid is water.
    Type: Application
    Filed: September 25, 2020
    Publication date: November 17, 2022
    Inventors: Bettina Mettmann, Thomas Buesgen, Michael Kessler
  • Patent number: 11472101
    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 and wherein at least one of the first material Mi or of the further material Mx is a powder. Also, a three dimensional structure is described which is available according to the process according to the invention.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: October 18, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Dirk Achten, Thomas Büsgen, Dirk Dijkstra, Bettina Mettmann, Levent Akbas, Roland Wagner, Michael Kessler
  • Patent number: 11472117
    Abstract: A method for producing an object from a filamentary building material in an additive fused deposition modelling process, comprising the steps of: providing the building material; transporting the building material into a printhead at a feed rate for the building material, wherein the building material is transported between a driven drive wheel and a second wheel; melting the building material by means of a heating device in the printhead; discharging the molten building material to a discharge location, corresponding to a selected cross section of the object to be produced, at a discharge rate through an orifice of the printhead, with relative movement of the printhead in relation to the discharge location at a predetermined speed to movement along a predetermined path, wherein the path has at each location a curvature that can assume a positive value, zero or a negative value; wherein a control unit controls at least the drive of the drive wheel, the heating device in the printhead and the movement of the p
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: October 18, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Dirk Achten, Thomas Buesgen, Levent Akbas, Roland Wagner, Nicolas Degiorgio, Jonas Kuenzel
  • Patent number: 11472099
    Abstract: The invention relates to a method for producing an object by means of a fused deposition modeling method (FDM), from a construction material, wherein the construction material comprises a polycarbonate and a di-glycerol ester. The invention also relates to the use of a polycarbonate with improved flowability comprising a diglycerol as construction material in an additive fused deposition modeling method.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: October 18, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Dirk Achten, Thomas Büsgen, Rolf Wehrmann, Helmut Werner Heuer
  • Patent number: 11458671
    Abstract: The invention relates to a method for producing an object, comprising the step of producing the object from a construction material by means of an additive manufacturing process, wherein the construction material comprises a plurality of thermoplastic polyurethane materials. The materials differ by at least one mechanical property such as the shore hardness or the elongation at break. The invention also relates to an object obtained according to said method.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: October 4, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Dirk Achten, Thomas Büsgen, Michael Kessler, Peter Reichert, Roland Wagner, Nicolas Degiorgio, Jonas Kuenzel, Ting Liu
  • 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: 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: 11390020
    Abstract: The invention relates to a method for producing an object from different powdered components by means of additive manufacturing, wherein a plurality of powdered components having different melting points are simultaneously placed in precise positions, and the powder coating (1) is subsequently thermally treated. The construction material is, for example, polyether ether ketone (PEEK), polyaryl ether ketone (PAEK), polyether ketone ketone (PEKK), polyether sulfone, polyimide, polyether imide, polyester, polyamides, polycarbonates, polyurethanes, polyvinyl chloride, polyoxymethylene, polyvinyl acetate, polyacrylates, polymethacrylates, polyethylene, polypropylene, polylactide, ABS (acrylonitrile butadiene styrene copolymers), PETG (glycol modified polyethylene terephthalate), polystyrene, or mixtures thereof. The supporting material is an inorganic salt of the alkali metals, an inorganic salt of the alkaline earth metals, or a mixture thereof.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: July 19, 2022
    Assignee: Covestro Intellectual Property GmbH & Co. KG
    Inventors: Dirk Achten, Bettina Mettmann, Thomas Buesgen, Roland Wagner, Maximilian Wolf
  • 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: 11267192
    Abstract: A method for producing an object with layers of different materials in an additive manufacturing process comprises the following steps: •I) providing a construction material heated at least in part to a temperature above its glass transition temperature on a substrate, so that a layer of the construction material is obtained which corresponds to a first selected cross section of the object; •II) providing a construction material heated at least in part to a temperature above its glass transition temperature on a previously provided layer of the construction material, so that another layer of the construction material is obtained which corresponds to another selected cross section of the object and which is connected to the previously provided layer; •III) repeating step II) until the object is formed.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: March 8, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Dirk Achten, Thomas Büsgen, Peter Reichert, Nicolas Degiorgio, Rolf Wehrmann, Helmut Werner Heuer, Eckhard Wenz
  • Patent number: 11247388
    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: Grant
    Filed: July 12, 2019
    Date of Patent: February 15, 2022
    Assignee: Covestro Intellectual Property GmbH & Co. KG
    Inventors: Dirk Achten, Thomas Buesgen, Joerg Tillack, Fabian Schuster, Ralf Rott, Nicolas Degiorgio, Jonas Kuenzel, Joerg Buechner, Wolfgang Arndt, Martin Melchiors, Harald Kraus
  • Patent number: 11248998
    Abstract: The invention relates to a method for the mechanical testing of a structure (1, 10) formed as one part, comprising the following steps: a) identifying a sub-element (2, 11) in the structure (1, 10) formed as one part for generating a test element (3, 3?) that is intended to undergo mechanical testing, wherein the sub-element (2, 11) only represents a portion of the structure (1, 10) formed as one part, b) determining the spatial-geometrical structure of the sub-element (2, 11), c) generating the test element (3, 3?) on the basis of the spatial-geometrical structure of the sub-element (2, 11) and at least in part or in full by way of a 3D printing process, d) carrying out at least one mechanical test on the test element (3, 3?) generated.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: February 15, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Dirk Achten, Thomas Büsgen, Dirk Dijkstra, Nicolas Degiorgio
  • Publication number: 20220024123
    Abstract: The invention relates to a method for producing an object from different powdered components by means of additive manufacturing, wherein a plurality of powdered components having different melting points are simultaneously placed in precise positions, and the powder coating (1) is subsequently thermally treated. The construction material is, for example, polyether ether ketone (PEEK), polyaryl ether ketone (PAEK), polyether ketone ketone (PEKK), polyether sulfone, polyimide, polyether imide, polyester, polyamides, polycarbonates, polyurethanes, polyvinyl chloride, polyoxymethylene, polyvinyl acetate, polyacrylates, polymethacrylates, polyethylene, polypropylene, polylactide, ABS (acrylonitrile butadiene styrene copolymers), PETG (glycol modified polyethylene terephthalate), polystyrene, or mixtures thereof. The supporting material is an inorganic salt of the alkali metals, an inorganic salt of the alkaline earth metals, or a mixture thereof.
    Type: Application
    Filed: December 19, 2019
    Publication date: January 27, 2022
    Inventors: Dirk Achten, Bettina Mettmann, Thomas Buesgen, Roland Wagner, Maximilian Wolf
  • 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
  • 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