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).

  • Publication number: 20200407576
    Abstract: The invention relates to storage-stable pigmented formulations containing isocyanate groups, comprising at least one pigment a., at least one component b. containing isocyanate groups, at least one wetting agent and/or dispersant c., at least one grind resin d. and optionally solvents, wherein the formulation has a viscosity increase of less than 500% after storage at 50° C. over a period of at least 3 days. The invention also relates to the production of such formulations and to the use thereof.
    Type: Application
    Filed: March 14, 2019
    Publication date: December 31, 2020
    Inventors: Joerg Tillack, Dirk Achten, Monika Bach, Achim Weber, Fabian Schuster
  • Publication number: 20200353677
    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: Application
    Filed: December 12, 2018
    Publication date: November 12, 2020
    Inventors: Dirk Achten, Thomas Buesgen, Roland Wagner, Florian Stempfle, Christoph Tomczyk
  • Publication number: 20200332147
    Abstract: The present invention relates to coatings which have high stability with respect to chemical and mechanical impacts. Said coatings are obtainable by crosslinking polyisocyanates with a low oligomer content.
    Type: Application
    Filed: October 18, 2017
    Publication date: October 22, 2020
    Inventors: Dirk ACHTEN, Maria ALMATO GUITERAS, Saskia BEUCK, Thomas FELLER, Florian GOLLING
  • Patent number: 10808070
    Abstract: The present invention relates to a polyisocyanurate foam obtainable by reacting a mixture in the presence of a catalyst and optionally an initiator, comprising or consisting of: A) a polyisocyanate component comprising at least one aliphatic polyisocyanate; B) a component reactive to isocyanate comprising at least one polyol and/or an alcohol and also optionally an amine; C) at least one blowing agent; D) at least one foam stabilizer and E) optionally at least one additive, characterized in that the mixture, upon accompanying use of an isocyanate-reactive component (polyol, alcohol, amine), has an index of at least 200. The invention further relates to a process for producing such a foam and use thereof as an insulating material, as a construction element, as facade insulation, as reactor insulation, as battery insulation, as superheated steam insulation, as insulation for a still, or as weather-resistant insulating material.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: October 20, 2020
    Assignee: Covestro Deutschland AG
    Inventors: Lutz Böhnke, Dirk Achten
  • Patent number: 10806208
    Abstract: The invention relates to a method for producing a three-dimensional object, the outer surface of which has at least one surface section that is generated in that, by means of an additive production method (layer-building forming method), initially a surface section is produced on a flat base plate (5) in two-dimensional form, comprising the following steps: I) applying at least one curable polymer or curable reaction resin with a respective elastic modulus according to DIN 53504 (effective: 18 Apr.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: October 20, 2020
    Assignee: Covestro Deutschland AG
    Inventors: Thomas Büsgen, Dirk Achten, Nicolas Degiorgio, Roland Wagner, Thomas Michaelis, Maria Elisabeth Beenen-Fuchs
  • Publication number: 20200325951
    Abstract: A deformable body, wherein the body is constructed from a multiplicity of layers of a polymer construction material and in which a construction direction is defined perpendicular to the layers. The body preferably comprises layers with a multiplicity of curve pairs (10) which are formed by the construction material and which run in the same direction as one another, the curve pairs comprise in each case two periodic curves (20, 30) running oppositely with respect to one another, and the curve pairs comprise portions of maximum spacing to one another (40, 41, 60, 61) and portions of minimum spacing to one another (50, 51, 70, 71).
    Type: Application
    Filed: November 23, 2018
    Publication date: October 15, 2020
    Inventors: Dirk Achten, Thomas Buesgen, Nicolas Degiorgio, Jonas Kuenzel, Ting Liu, Maximilian Wolf
  • Publication number: 20200307076
    Abstract: The invention relates to an additive manufacturing process (3D printing) using particles having a meltable polymer. The meltable polymer comprises a thermoplastic polyurethane polymer which has a flowing temperature (intersection of E? and E? in the DMA) of ?80° C. to <180° C. and a Shore A hardness according to DIN ISO 7619-1 of ?50 Shore A and <85 Shore A and which, at a temperature T, has a melt volume rate (melt volume rate (MVR)) according to ISO 1133 of ?5 to <15 cm3/10 min. The invention also relates to an item which can be obtained by means of the method.
    Type: Application
    Filed: December 13, 2018
    Publication date: October 1, 2020
    Inventors: Dirk Achten, Thomas Buesgen, Michael Kessler, Peter Reichert, Bettina Mettmann
  • Publication number: 20200306829
    Abstract: The present invention relates to a method for producing a treated object, comprising the steps of: applying a layer of particles to a target area; applying a liquid binder to a selected portion of the layer in accordance with a cross-section of the object, so that the particles in the selected portion are bonded; repeating the steps of applying a layer of particles and applying a binder for a plurality of layers so that the bonded portions of the adjacent layers are bonded to form an object, wherein at least a part of the particles comprises a meltable polymer. A binder which cures by cross-linking is preferably selected as the binder. The obtained object is at least partially contacted with a liquid heated to ?T or with a powder bed heated to ?T in order to obtain the treated object. T represents a temperature of ?25° C.
    Type: Application
    Filed: December 18, 2018
    Publication date: October 1, 2020
    Inventors: Dirk Achten, Thomas Buesgen, Roland Wagner, Jonas Kuenzel, Michael Kessler, Bettina Mettmann
  • Publication number: 20200307073
    Abstract: The invention relates to an additive manufacturing process (3D printing) using particles having a meltable polymer. The meltable polymer comprises a thermoplastic polyurethane polymer which has a melting range (DSC, Differential Scanning calorimetry; second heating at heating rate 5 K/min) of 160 to 270° C. and a Shore D hardness according to DIN ISO 7619-1 of 50 or more and which, at a temperature T, has a melt volume rate (melt volume rate (MVR)) according to ISO 1133 of 5 to 15 cm/10 min and a change of the MVR, when this temperature T increases by 20° C., of greater than or equal to 90 cm3/10 min. The invention also relates to an item which can be obtained by means of the method.
    Type: Application
    Filed: December 13, 2018
    Publication date: October 1, 2020
    Inventors: Dirk Achten, Thomas Buesgen, Michael Kessler, Peter Reichert, Bettina Mettmann
  • Publication number: 20200309656
    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: Application
    Filed: June 20, 2017
    Publication date: October 1, 2020
    Applicants: Covestro Deutschland AG, Covestro Deutschland AG
    Inventors: Dirk ACHTEN, Thomas BÜSGEN, Dirk DIJKSTRA, Nicolas DEGIORGIO
  • Patent number: 10752723
    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: April 21, 2016
    Date of Patent: August 25, 2020
    Assignee: Covestro Deutschland AG
    Inventors: Hans-Josef Laas, Dieter Mager, Mathias Matner, Dirk Achten, Heiko Hocke
  • Patent number: 10752724
    Abstract: The invention relates to a process for producing polyisocyanurate plastics having a functionalized surface, comprising the following steps: a) providing a polyisocyanate composition A) containing monomeric and/or oligomeric polyisocyanates; b) catalytically trimerizing the polyisocyanate composition A) so as to obtain a bulk polyisocyanurate material as intermediate; c) surface functionalizing the intermediate by contacting at least one surface of the intermediate with at least one functionalizing reagent D); d) continuing the catalytic trimerization. The invention further relates to a polyisocyanurate plastic having a functionalized surface obtainable from the process of the invention.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: August 25, 2020
    Assignee: Covestro Deutschland AG
    Inventors: Dirk Achten, Hans-Josef Laas, Dieter Mager, Mathias Matner, Heiko Hocke, Jörg Tillack
  • Patent number: 10745591
    Abstract: The present invention relates to a method for adhesively bonding substrates, said method comprising the following steps: I) at least one adhesive component (a) and at least one isocyanate component (b) are applied between at least two substrates; II) the substrates are pressed together. The method is characterized in that in step I), the adhesive component and the isocyanate component are applied separately to the substrate. The invention further relates to a composite obtained according to said method. In a preferred embodiment, an aqueous polyurethane dispersion or a polyurethane solution in organic solvents is used as the adhesive component.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: August 18, 2020
    Assignee: Covestro Deutschland AG
    Inventors: Jörg Tillack, Dirk Achten, Wolfgang Arndt, Roland Wagner, Martin Melchiors, Cornelia Steck
  • Publication number: 20200255584
    Abstract: The invention relates to a method for producing a polymer comprising the following steps: (A) depositing a radically cross-linkable resin, obtaining a radically cross-linked resin; and (B) treating the radically cross-linked resin under conditions which are sufficient to trigger a chemical reaction that is different from the radical cross-linking in the radically cross-linked resin. The radically cross-linkable resin comprises a curable component, in which there are NCO groups, olefinic C?C double bonds and epoxide groups, and the chemical reaction in the radically cross-linked resin that is different from the radical cross-linking is the reaction of NCO groups and epoxide groups to form oxazolidinone groups.
    Type: Application
    Filed: October 12, 2018
    Publication date: August 13, 2020
    Inventors: Dirk Achten, Thomas Buesgen, Roland Wagner, Florian Stempfle, Christoph Tomczyk
  • Patent number: 10717805
    Abstract: The invention relates 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, where the isocyanurate structure content in the polyisocyanate composition A) is at least 50 mol %, based on the sum total of the oligomeric structures from the group consisting of uretdione, isocyanurate, allophanate, biuret, iminooxadiazinedione and oxadiazinetrione structure that are present in the polyisocyanate composition A); (b) catalytically trimerizing the polyisocyanate composition A), where (i) the catalytic trimerization is conducted at ambient temperatures of at least 80° C.; (ii) the catalytic trimerization is conducted within less than 12 hours at least up to a degree of conversion at which only still not more than 20% of the isocyanate groups originally present in the polyisocyanate composition A) are present.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: July 21, 2020
    Assignee: Covestro Deutschland AG
    Inventors: Mathias Matner, Dirk Achten, Hans-Josef Laas, Heiko Hocke, Dieter Mager
  • Publication number: 20200198226
    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 comprising a polyurethane and/or polyester polyol. The construction material further comprises a polyamine component and during and/or after the production of the object, the construction material is heated to a temperature of ?50° C. The invention also relates to an object obtained according to the claimed method.
    Type: Application
    Filed: June 13, 2018
    Publication date: June 25, 2020
    Inventors: Dirk Achten, Thomas Buesgen, Christoph Eggert, Hans-Josef Laas, Florian Johannes Stempfle, Michael Ludewig
  • Publication number: 20200190245
    Abstract: The present invention relates to polymerizable compositions which contain components that can be crosslinked both via isocyanurate bonds and by a radical reaction mechanism. The invention further relates to methods by way of which polymers can be produced from said compositions.
    Type: Application
    Filed: November 14, 2017
    Publication date: June 18, 2020
    Inventors: Paul HEINZ, Richard MEISENHEIMER, Jöng TILLACK, Dirk ACHTEN, Thomas BÜSGEN, Michael LUDEWIG, Christoph TOMCZYK, Roland WAGNER
  • Publication number: 20200140707
    Abstract: The present invention relates to a method for producing an object in an additive manufacturing process from a precursor and comprises the following steps: I) depositing a layer of a radically cross-linkable construction material, which corresponds to a first selected cross-section of the precursor, on a carrier; II) depositing a layer of a radically cross-linkable construction material, which corresponds to a further selected cross-section of the precursor, on a previously applied layer of the radically cross-linked construction material; III) repeating step II) until the precursor is formed. The radically cross-linkable construction material comprises a thermoplastic radically cross-linkable polyurethane with a urethane group content of ?5% by weight and a photoinitiator. The radically cross-linkable construction material is also heated to a processing temperature that is greater than the melting point of the radically cross-linkable polyurethane. After step III) the precursor having a temperature of 20° C.
    Type: Application
    Filed: June 29, 2018
    Publication date: May 7, 2020
    Inventors: Dirk Achten, Thomas Buesgen, Christoph Tomczyk, Michael Ludewig, Thomas Faecke, Roland Wagner, Florian Stempfle
  • Publication number: 20200130283
    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: Application
    Filed: June 26, 2018
    Publication date: April 30, 2020
    Inventors: Dirk Achten, Thomas Buesgen, Levent Akbas, Roland Wagner, Nicolas Degiorgio, Jonas Kuenzel
  • Publication number: 20200123344
    Abstract: The invention relates to materials made from cross-linked isocyanates which are coloured by pigments and/or pigment formulations.
    Type: Application
    Filed: June 22, 2018
    Publication date: April 23, 2020
    Inventors: Paul HEINZ, Heiko HOCKE, Dirk ACHTEN, Joerg TILLACK