Patents by Inventor Hans-Josef Laas

Hans-Josef Laas 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: 11008416
    Abstract: The present invention relates to aqueous, curable composition, comprising or consisting of A) at least one uretdione prepolymer, which comprises at least one uretdione group, and which is obtainable by reacting A1) at least one uretdione polyisocyanate having an isocyanate functionality of at least 2.0, whereby said uretdione polyisocyanate is obtained from at least one aliphatic polyisocyanate, with A2) at least one compound comprising at least one Zerewitinoff-active group, and A3) at least one reactant, which comprises at least one Zerewitinoff-active group and being different from A2 or which is H2O, preferably in the presence of at least one catalyst, to obtain the uretdione prepolymer, wherein the prepolymer has an acid number of at most 4 mg KOH/g, preferably determined according to DIN EN ISO 2114:2002-06 as 37 wt. % aqueous dispersion; and B) optionally at least one compound, which comprises at least one Zerewitinoff-active group; and C) at least one azolate-compound.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: May 18, 2021
    Assignees: Covestro LLC, Covestro Deutschland AG
    Inventors: Sebastian Dörr, Saskia Beuck, Hans-Josef Laas, Dorota Greszta-Franz, Nusret Yuva, Ralph-Georg Born, Alan Ekin
  • Publication number: 20210130530
    Abstract: The invention relates to a polyisocyanate mixture comprising a polyisocyanate component A) having aliphatically and/or cycloaliphatically bonded isocyanate groups and a polyisocyanate component B) having araliphatically and/or aromatically bonded isocyanate groups, characterized in that the polyisocyanate component A) comprises at least 0.85% by weight of sulfonate groups (calculated as SO3; molar weight=80 g/mol) in chemically bonded form and the proportion of the polyisocyanate component B) is 7 to 43% by weight of the total amount of the components A) and B). The invention further relates to the use thereof and also coating compositions comprising the polyisocyanate mixture and also the substrates coated with these coating compositions.
    Type: Application
    Filed: July 12, 2019
    Publication date: May 6, 2021
    Inventors: Hans-Josef Laas, Christoph Irle, Eva Tejada Rosales, Na Xu, Ling Yang
  • Publication number: 20210054125
    Abstract: The invention relates to a method for producing an object from a precursor, comprising the steps: I) depositing a radically cross-linked resin on a carrier so that a layer of a construction material connected to the carrier is obtained, said layer corresponding to a first selected cross-section of the precursor; II) depositing a radically cross-linked resin on a previously applied layer of the construction material so that an additional layer of the construction material is obtained, which corresponds to a further selected cross-section of the precursor and which is connected to the previously applied layer; III) repeating step II) until the precursor is formed, wherein, at least in step II), the deposition of a radically cross-linked resin is carried out by allowing energy to act on a selected region of a radically cross-linkable resin, corresponding to the respectively selected cross-section of the object, wherein the radically cross-linkable resin has a viscosity (23° C.
    Type: Application
    Filed: December 4, 2017
    Publication date: February 25, 2021
    Inventors: Dirk Achten, Thomas BÜSGEN, Florian GOLLING, Roland WAGNER, Christoph TOMCZYK, Jörge TILLACK, Christoph EGGERT, Hans-Josef LAAS, Florian STEMPFLE
  • Publication number: 20210024680
    Abstract: The invention relates to aqueous uretdione group-containing compositions comprising or consisting of (A) at least one uretdione group-containing curing agent based on aliphatic, cycloaliphatic, araliphatic, and/or aromatic polyisocyanates which do not contain chemically bonded hydrophilating groups; (B) at least one hydroxy group-containing polyol which contains at least one chemically bonded carboxylic acid group; (C) optionally solvents; and (D) optionally auxiliary agents and additives; wherein the quantity ratio of the components (A) and (B) is measured such that the molar ratio of the NCO groups of the curing agent (A), said groups being provided in the form of uretdione, to the NCO reactive groups of the polyol (B) equals 3.0:0.5 to 0.5:3.0, and A and B are provided as a physical mixture.
    Type: Application
    Filed: March 21, 2019
    Publication date: January 28, 2021
    Inventors: Dorota Greszta-Franz, Saskia Beuck, Sebastian Doerr, Hans-Josef Laas, Nusret Yuva, Heinz-Dietmar Gewiss
  • Publication number: 20210024679
    Abstract: The present invention relates to a catalyst system comprising: A) at least one compound selected from azoles, oxazoles, thiazoles, benzotriazole, benzimidazole, benzoxazole and salts thereof; B) at least one acid catcher, which contains at least one epoxy group; and C) at least one catalyst containing an N,N,N?-trisubstituted amidine structure with an amidine group content of from 12.0 to 47.0 wt %, calculated as CN2 with molecular weight=40. The invention also relates to a kit which comprises the catalyst system of the present invention and an aqueous uretdione dispersion having an acid number of from 1 to 100 KOH/g and additionally at least one carboxyl group. The invention further relates to a method for producing a polyurethane layer using the catalyst system of the present invention and said uretdione dispersion, and to the obtained polyurethane layer, and to the use of the catalyst system for curing aqueous acidic uretdione dispersions and/or for the production of paints or coatings.
    Type: Application
    Filed: March 21, 2019
    Publication date: January 28, 2021
    Inventors: Saskia Beuck, Sebastian Doerr, Hans-Josef Laas, Dorota Greszta-Franz, Nusret Yuva, Ralph-Georg Born
  • Publication number: 20210017322
    Abstract: The present invention relates to a specific uretdione prepolymer, and an aqueous curable composition based on the specific uretdione prepolymer. Furthermore, it pertains to a process for curing said aqueous curable composition, the cured article obtained by this process and additionally to the use of said aqueous composition for coatings, adhesives and/or sealants.
    Type: Application
    Filed: March 21, 2019
    Publication date: January 21, 2021
    Inventors: Saskia Beuck, Sebastian Doerr, Hans-Josef Laas, Dorota Greszta-Franz, Nusret Yuva
  • Publication number: 20210017323
    Abstract: The invention relates to aqueous uretdione group-containing compositions comprising or consisting of (A) at least one uretdione group-containing curing agent based on aliphatic, cycloaliphatic, aliphatic and/or aromatic polyisocyanates which do not contain chemically bonded hydrophilating groups; (B) at least one polyacrylate copolymer; (C) optionally solvents; and (D) optionally auxiliary agents and additives; wherein the quantity ratio of the components (A) and (B) is measured such that the molar ratio of the NCO groups of the curing agent (A), said groups being provided in the form of uretdione, to the NCO reactive groups of the polyacrylate copolymer (B) equals 3.0:0.5 to 0.5:3.0, and A and B are provided as a physical mixture.
    Type: Application
    Filed: March 21, 2019
    Publication date: January 21, 2021
    Inventors: Dorota Greszta-Franz, Saskia Beuck, Hans-Josef Laas, Nusret Yuva, Heinz-Dietmar Gewiss
  • Publication number: 20210009850
    Abstract: The invention relates to a polyurethane powder coating material, to the use of such a polyurethane powder coating material, to a method for producing a coating, and to coated substrates.
    Type: Application
    Filed: July 1, 2020
    Publication date: January 14, 2021
    Inventors: Hans-Josef Laas, Irene Cristina Latorre Martinez, Michael Grahl, Raul Pires
  • Publication number: 20200392278
    Abstract: A method for producing polyurethanes containing alkoxysilane groups comprises the step of reacting a compound containing at least one NCO group with a compound containing at least one Zerewitinoff-active H atom in the presence of a catalyst component, wherein the compound containing at least one NCO group and/or the compound containing at least one Zerewitinoff-active H atom contain at least one alkoxysilane group, to obtain a polyurethane containing alkoxysilane groups. The invention also relates to a polymer containing alkoxysilane groups, a method for producing a curable polymer, a curable polymer, a cured polymer, and the use thereof. The polymers contain a complex of a lanthanide with at least one beta-diketonate ligand, preferably Yb(acac)3, and are free from organic tin compounds.
    Type: Application
    Filed: December 14, 2018
    Publication date: December 17, 2020
    Inventors: Christoph THIEBES, Florian STEMPFLE, Hans-Josef LAAS, Beate BAUMBACH, Ute NATTKE
  • Patent number: 10844161
    Abstract: The invention relates to a method for producing polyurethanes containing silane groups, to products that can be obtained by means of said method, and to the use of said products for producing cross-linkable binders, in particular for coatings, sealant raw materials, or glue raw materials.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: November 24, 2020
    Assignee: Covestro Deutschland AG
    Inventor: Hans-Josef Laas
  • Publication number: 20200339729
    Abstract: The invention relates to a method for preparing a silane-terminated polymer by reacting a polyol A) with a diisocyanate B), an isocyanatosilane C) and an amino silane E), wherein the polyol component A) is reacted simultaneously with a mixture of at least one diisocyanate B) and one isocyanatosilane C), and the resulting product is subsequently reacted with the amino silane E) to produce the silane-terminated polymer. The method according to the invention can be used to prepare mixed silane-terminated polymers having a low viscosity.
    Type: Application
    Filed: December 20, 2018
    Publication date: October 29, 2020
    Inventors: Florian STEMPFLE, Christoph THIEBES, Ute NATTKE, Hans-Josef LAAS
  • Patent number: 10774239
    Abstract: The invention relates to coating agents that contain thioallophanates, containing silane groups, as cross-linking agents and to the use of said coating agents to produce coatings, in particular clear coats for automobile painting.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: September 15, 2020
    Assignee: Covestro Deutschland AG
    Inventors: Hans-Josef Laas, Tanja Hebestreit, Jan Weikard
  • 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: 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: 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
  • Patent number: 10590226
    Abstract: The invention relates to a process for producing solids made from polyisocyanurate plastics, comprising the following steps: (a) providing a polyisocyanate composition A) which contains oligomeric polyisocyanates and is low in monomeric polyisocyanates, 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.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: March 17, 2020
    Assignee: Covestro Deutschland AG
    Inventors: Mathias Matner, Dirk Achten, Hans-Josef Laas, Heiko Hocke, Dieter Mager
  • 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
  • Patent number: 10544327
    Abstract: The invention relates to aqueous two-component coating compositions based on preferably hydroxy-functional and/or amino-functional aqueous polymer dispersions and thioallophanates containing silane groups as crosslinking agents, to a method for producing them and to the use of these coating compositions for producing coatings.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: January 28, 2020
    Assignee: Covestro Deutschland AG
    Inventors: Hans-Josef Laas, Robert Reyer
  • Patent number: 10472455
    Abstract: The invention relates to modified polyisocyanates, obtained by reacting at least one polyisocyanate (A) based on 1,5-diisocyanatopentane with at least one silane compound (B) which is reactive with respect to isocyanate groups. The invention also relates to a method for producing the modified polyisocyanates and to the use thereof as starting components in the production of polyurethane plastics, in particular as crosslinker components in polyurethane paints and coatings.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: November 12, 2019
    Assignee: Covestro Deutschland AG
    Inventors: Hans-Josef Laas, Christoph Eggert, Andreas Hecking, Nusret Yuva, Gesa Behnken