Patents by Inventor Joerg Buechner

Joerg Buechner 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).

  • Publication number: 20240124663
    Abstract: The invention relates to a multilayer composite, containing a first polymeric layer which on a side is coated with a printing ink containing a polyurethane as binder, and a second layer which with a polyurethane dispersion as adhesive is joined at least partly with the side of the first polymeric layer which is coated with the printing ink containing a polyurethane as binder.
    Type: Application
    Filed: February 18, 2022
    Publication date: April 18, 2024
    Inventors: Joerg Buechner, Harald Kraus, Thomas Fait, Christoph Thiebes
  • Publication number: 20230136555
    Abstract: The present invention relates to aqueous dispersions containing at least one polyurethane and at least one compound with a biocidal action, the at least one compound with a biocidal action containing at least one peroxide group and being present in a quantity of between 0.01 and 1,000 mmol/kg, in relation to the total aqueous dispersion, and relates to a process for preparing a biocide-free aqueous polyurethane dispersion, said process comprising at least the steps: (A) preparing an aqueous solution containing at least one polyurethane and at least one compound with a biocidal action, the at least one compound with a biocidal action containing at least one peroxide group and being present in a quantity of between 0.
    Type: Application
    Filed: March 15, 2021
    Publication date: May 4, 2023
    Inventors: Joerg Buechner, Rainer Trinks, Thomas Fait, Oliver Kirstein
  • Publication number: 20230138157
    Abstract: The invention relates to the use of a separating medium, containing at least one essential oil or consisting of at least one essential oil, selected from the group consisting of phenols, phenylpropanoids and furanocoumarins, for separating at least two joining parts which are joined by means of an adhesive bond.
    Type: Application
    Filed: March 19, 2021
    Publication date: May 4, 2023
    Inventors: Christoph Thiebes, Joerg Buechner, Thomas Fait, Oliver Kirstein
  • Publication number: 20230135472
    Abstract: The invention relates to the use of mixtures of water and essential oils selected from the group consisting of phenols, phenylpropanoids and furanocoumarins, for separating multilayered composites for the segregated recycling of polymer/metal films.
    Type: Application
    Filed: March 19, 2021
    Publication date: May 4, 2023
    Inventors: Joerg Buechner, Christoph Thiebes, Thomas Fait, Oliver Kirstein
  • 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
  • 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: 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: 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: 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
  • Patent number: 10926459
    Abstract: A process for manufacturing an article comprises the steps of: applying a layer that consists of particles to a target area; allowing, in a chamber, energy to act on a selected portion of the layer, according to a cross-section of the article, so that the particles in the selected portion are bonded, and repeating the steps of applying and allowing energy to act for a plurality of layers so that the bonded portions of the adjacent layers are bonded to form the article, at least part of the particles comprising 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. The fusible polymer further has a complex viscosity \?*\ (determined by viscosity measurement in the melt using a plate-plate oscillating viscometer according to ISO 6721-10 at 100° C. and a shear rate of 1/s) of ?10 Pas to ?1000000 Pas. Finally, the temperature inside the chamber is ?50° C.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: February 23, 2021
    Assignee: Covestro Deutschland AG
    Inventors: Dirk Achten, Thomas Büsgen, Dirk Dijkstra, Nicolas Degiorgio, Wolfgang Arndt, Levent Akbas, Roland Wagner, Peter Reichert, Jörg Büchner
  • Patent number: 10882942
    Abstract: The invention relates to storage-stable aqueous dispersions of hydrophilically modified polycarbodiimide resins, a method for producing same, and the use of a salt component to reduce carbodiimide hydrolysis in aqueous polycarbodiimide dispersions.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: January 5, 2021
    Assignee: Covestro Deutschland AG
    Inventors: Joerg Buechner, Michael Ludewig, Evgeny Avtomonov, Martin Melchiors
  • Publication number: 20200385508
    Abstract: The invention relates to storage-stable aqueous dispersions of hydrophilically modified polycarbodiimide resins, a method for producing same, and the use of a salt component to reduce carbodiimide hydrolysis in aqueous polycarbodiimide dispersions.
    Type: Application
    Filed: December 12, 2018
    Publication date: December 10, 2020
    Inventors: Joerg Buechner, Michael Ludewig, Evgeny Avtomonov, Martin Melchiors
  • Publication number: 20200055235
    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: Application
    Filed: May 9, 2018
    Publication date: February 20, 2020
    Inventors: Dirk Achten, Thomas Buesgen, Thomas Faecke, Bettina Mettmann, Joerg Buechner, Hans-Josef Laas, Ting Liu
  • Publication number: 20190217533
    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: Application
    Filed: September 11, 2017
    Publication date: July 18, 2019
    Inventors: Dirk Achten, Thomas BÜSGEN, Dirk DIJKSTRA, Nicolas DEGIORGIO, Roland WAGNER, Levent AKBAS, Peter REICHERT, Jörg BÜCHNER
  • Publication number: 20190184632
    Abstract: A process for manufacturing an article comprises the steps of: applying a layer that consists of particles to a target area; allowing, in a chamber, energy to act on a selected portion of the layer, according to a cross-section of the article, so that the particles in the selected portion are bonded, and repeating the steps of applying and allowing energy to act for a plurality of layers so that the bonded portions of the adjacent layers are bonded to form the article, at least part of the particles comprising 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. The fusible polymer further has a complex viscosity \?*\ (determined by viscosity measurement in the melt using a plate-plate oscillating viscometer according to ISO 6721-10 at 100° C. and a shear rate of 1/s) of ?10 Pas to ?1000000 Pas. Finally, the temperature inside the chamber is ?50° C.
    Type: Application
    Filed: September 11, 2017
    Publication date: June 20, 2019
    Inventors: Dirk ACHTEN, Thomas BÜSGEN, Dirk DIJKSTRA, Nicolas DEGIORGIO, Wolfgang ARNDT, Levent AKBAS, Roland WAGNER, Peter REICHERT, Jörg BÜCHNER
  • Patent number: 9353221
    Abstract: The present invention relates to aqueous dispersions containing hydrophilized polycarbodiimides, methods for producing the aqueous dispersions according to the invention, their use as a constituent of binders in adhesives, lacquers, paints, paper coating compounds or in fiber nonwovens and articles made of wood, metal, textile, leather or plastic, which are treated with the aqueous dispersion according to the invention.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: May 31, 2016
    Assignee: Covestro Deutschland AG
    Inventors: Evgeny Avtomonov, Harald Kraus, Sebastian Dörr, Dirk Achten, Jörg Büchner
  • Patent number: 9321939
    Abstract: Method for the production of adhesive-coated articles, articles obtainable thereby and their use A method for the production of adhesive-coated articles comprises the steps of: (I) providing a substrate; (II) applying a first polyurethane and/or polyurethane-polyurea polymer onto the substrate, the first polyurethane and/or polyurethane-polyurea polymer being capable of attaining an at least partially crystalline state with a final degree of crystallinity and wherein during and/or after the application the first polyurethane and/or polyurethane-polyurea polymer is present in a non-crystalline state.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: April 26, 2016
    Assignee: Covestro Deutschland AG
    Inventors: Jörg Büchner, Harald Kraus, Pantea Nazaran, Matthias Wintermantel
  • Patent number: 9108357
    Abstract: The present invention relates to a process for overlaying a base substance with a multilayer decorative film in a vacuum forming, a multilayer decorative film for a secondary decoration used in such a vacuum forming process, to a multilayer decorative film excellent in adhesiveness, workability, and secondary physical properties such as heat resistance and hydrolysis resistance after forming and the use of such multilayer decorative film in a vacuum forming process.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: August 18, 2015
    Assignee: Bayer Intellectual Property GmbH
    Inventors: Takahiko Ohwada, Jörg Büchner, Holger Mundstock
  • Patent number: 8980407
    Abstract: The invention relates to an aqueous adhesive composition containing at least one acrylate polymer with a glass transition temperature Tg>50° C. and at least one amorphous polyurethane or polyurethane-polyurea polymer with a glass transition temperature Tg<+10° C., the use of the adhesive compositions for the manufacture of heat-activated adhesive layers, and planar formations containing adhesive layers based on the adhesive composition.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: March 17, 2015
    Assignee: Bayer Intellectual Property GmbH
    Inventors: Jörg Büchner, Harald Kraus, Pantea Nazaran, Dirk Dijkstra