Patents by Inventor Emmanouil Spyrou

Emmanouil Spyrou 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: 12152102
    Abstract: The present invention relates to a process for producing a solid, internally and externally blocked polyurethane curing agent based on a (cyclo)aliphatic polyisocyanate, in which, in the sequence of steps a) to d), a) i) at least one internally blocked (cyclo)aliphatic polyisocyanate and ii) at least one lactam and/or at least one aliphatic alcohol are dissolved in a solvent to produce a reaction mixture, b) the reaction mixture is heated and reacted, c) the reacted reaction mixture is cooled until product precipitates, and d) liquid solvent and any unreacted dissolved reactants and precipitated product are mechanically separated from one another.
    Type: Grant
    Filed: October 5, 2022
    Date of Patent: November 26, 2024
    Assignee: Evonik Operations GmbH
    Inventors: Emmanouil Spyrou, Andrea Henschke, Elke Gollan, Nicole Fresmann, Jessika Schüller
  • Publication number: 20230399539
    Abstract: The present invention relates to a one-component system comprising a) at least one polyurethane prepolymer based on at least one di- and/or polyisocyanate and at least one di- and/or polyol, wherein at least one di- or polyol is a polyalkylene glycol having a number-average molecular weight of 900 to 2150 g/mol, wherein all unconverted isocyanate groups are blocked with at least one malonic ester and b) at least one di and/or polyamine; to a process for its production, to its use and to processes employing it for producing artificial leather and (artificial) leather coatings.
    Type: Application
    Filed: June 8, 2023
    Publication date: December 14, 2023
    Inventors: Denis Pukrop, Christoph Nacke, Silvia Herda, Emmanouil Spyrou, Guido Streukens
  • Patent number: 11795263
    Abstract: The present invention relates to compositions comprising a) 20-80% by weight, based on the total mass of constituents of the composition, of at least one sulfonic acid functionalized with at least one hydroxy and/or amino group and/or at least one sulfonic acid derivative functionalized with at least one hydroxy and/or amino group and b) 80-20% by weight, based on the total mass of constituents of the composition, of at least one compound having at least two OH groups, a method for the preparation thereof and use thereof.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: October 24, 2023
    Assignee: Evonik Operations GmbH
    Inventors: Emmanouil Spyrou, Iris Brückner, Judith Schoder
  • Patent number: 11739055
    Abstract: The invention relates to a process for preparing a diisocyanate of the formula (A) where R is selected from the group consisting of alkyl, aryl, and combinations thereof, comprising the following process steps in the indicated order; 1) providing an intermediate of the formula (B) with a process using lysine and urea and where R and each R? are independently selected from the group consisting of alkyl, aryl, and combinations thereof; and 2) thermolytic cleavage of the intermediate of the formula (B), thereby affording the diisocyanate of the formula (A), and also to the diisocyanate directly prepared therewith.
    Type: Grant
    Filed: June 25, 2021
    Date of Patent: August 29, 2023
    Assignee: Evonik Operations GmbH
    Inventors: Emmanouil Spyrou, Holger Loesch, Susanne Kreischer, Andrea Diesveld, Andrea Thesing, Jörg-Joachim Nitz
  • Publication number: 20230105553
    Abstract: The present invention relates to a process for producing a solid, internally and externally blocked polyurethane curing agent based on a (cyclo)aliphatic polyisocyanate, in which, in the sequence of steps a) to d), a) i) at least one internally blocked (cyclo)aliphatic polyisocyanate and ii) at least one lactam and/or at least one aliphatic alcohol are dissolved in a solvent to produce a reaction mixture, b) the reaction mixture is heated and reacted, c) the reacted reaction mixture is cooled until product precipitates, and d) liquid solvent and any unreacted dissolved reactants and precipitated product are mechanically separated from one another.
    Type: Application
    Filed: October 5, 2022
    Publication date: April 6, 2023
    Inventors: Emmanouil Spyrou, Andrea Henschke, Elke Gollan, Nicole Fresmann, Jessika Schüller
  • Publication number: 20220403093
    Abstract: The present invention relates to an additive manufacturing process using a composition comprising the reaction product of a polyester polyol and a compound comprising at least one functional group that can react with a hydroxyl-group of the polyester polyol and at least one further functional group, selected from acrylate- or methacrylate-group, wherein the polyester polyol is based on at least one organic acid comprising at least two carboxyl groups or its anhydride and at least one polyol comprising at least two hydroxy-groups, wherein the reaction product has a glass transition temperature Tg of below 23° C., wherein the composition optionally further comprises a photoinitiator, as a photopolymerisable material in.
    Type: Application
    Filed: December 4, 2020
    Publication date: December 22, 2022
    Applicant: Evonik Operations GmbH
    Inventors: David Bléger, Peter Altenbuchner, Emmanouil Spyrou, Thomas Pastor, Marie-Theres Wilkes, Odo Wunnicke, Benjamin Willy, Maik Dimmerling, Kim Bühning, Christiane Zatocil, Elke Gollan
  • Patent number: 11453744
    Abstract: The present invention provides compositions consisting of a) at least one metal salt, ammonium salt or phosphonium salt of a strong Brønsted acid and b) at least one primary aliphatic monoamine, processes for preparation thereof and use thereof.
    Type: Grant
    Filed: October 5, 2020
    Date of Patent: September 27, 2022
    Assignee: Evonik Operations GmbH
    Inventors: Emmanouil Spyrou, Holger Loesch, Andrea Thesing, Andrea Diesveld, Susanne Kreischer
  • Patent number: 11370876
    Abstract: The present invention relates to a low-alkylphenol composition comprising a) at least one epoxy resin, b) at least one amine having at least two secondary amino groups that are both part of an organic ring system, and c) at least one salt of a strong Brønsted acid with a counterion selected from metal ions, metal-containing ions, phosphonium ions and ammonium ions, to processes for production thereof and to the use thereof.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: June 28, 2022
    Assignee: Evonik Operations GmbH
    Inventors: Emmanouil Spyrou, Dirk Fuchsmann, Britta Kohlstruk, Annette Sandkühler
  • Patent number: 11370877
    Abstract: The present invention relates to a composition comprising a) at least one epoxy resin, b) at least one amine having at least two secondary amino groups which are both part of an organic ring system, and c) at least one salt of a very strong Brønsted acid with a counterion selected from metal ions, metal-containing ions, phosphonium ions and ammonium ions, and to processes for production thereof and use thereof.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: June 28, 2022
    Assignee: Evonik Operations GmbH
    Inventors: Emmanouil Spyrou, Susanne Kreischer, Andrea Diesveld, Holger Loesch
  • Patent number: 11359048
    Abstract: The present invention provides a composition comprising a) at least one epoxy resin, b) at least one cyclic amine of the formula (I) in which R1 to R4 is H or an organic radical, with the proviso that at least one of the R1, R2, R3 and R4 radicals ?H, and X?—(Y1)m-(A1)n-(Y2)o-(A2)p-(Y3)q-(A3)r-(Y4)s—??(II) where, independently of one another, m, n, o, p, q, r and s=0 or 1, A1, A2, A3=alkylene or alkenylene radical and Y1, Y2, Y3, Y4?NR5, PR5, O or S, where R5 independently=organic radical, where any two organic radicals selected from R1 to R5 and any radicals present in the alkylene and/or alkenylene radicals A1, A2, A3 may also form one or more further rings, with the proviso that at least one of the radicals selected from R1 to R5 present and any radicals present in the alkylene and/or alkenylene radicals A1, A2, A3 is substituted by at least one —NHR6 or —NH2 group, where R6=organic radical, and c) at least one salt of a strong Brønsted acid with a counterion selected from metal ions, metal-co
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: June 14, 2022
    Assignee: Evonik Operations GmbH
    Inventors: Emmanouil Spyrou, Dirk Fuchsmann, Britta Kohlstruk, Annette Sandkühler
  • Patent number: 11326017
    Abstract: The present invention relates to a composition at least comprising A) an adduct of isocyanatosilanes with hydroxy-functional compounds and B) a tin-free catalyst, and also to a coating composition comprising at least the composition and to the use of the coating composition.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: May 10, 2022
    Assignee: Evonik Operations GmbH
    Inventors: Tobias Unkelhäußer, Emmanouil Spyrou, Stephanie Hösl, Dennis Menne, Guido Streukens
  • Patent number: 11286335
    Abstract: The present invention provides a composition comprising a) at least one epoxy resin, b) at least one cyclic amine of the formula (I) in which R1 to R4 is H or an organic radical and X?—(Y1)m-(A1)n-(Y2)o-(A2)p-(Y3)q-(A3)r-(Y4)s—,??(II) where, independently of one another, m, n, o, p, q, r and s=0 or 1, A1, A2, A3=alkylene or alkenylene radical and Y1, Y2, Y3, Y4=NR5, PR5, O or S, where R5 independently=organic radical, where any two organic radicals selected from R1 to R5 and any radicals present in the alkylene and/or alkenylene radicals A1, A2, A3 may also form one or more further rings, with the proviso that at least one of the radicals selected from R1 to R5 present and any radicals present in the alkylene and/or alkenylene radicals A1, A2, A3 is substituted by at least one —NHR6 or —NH2 group, where R6=organic radical, and c) at least one salt of a very strong Brønsted acid with a counterion selected from metal ions, metal-containing ions, phosphonium ions and unsubstituted ammonium ions, and t
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: March 29, 2022
    Assignee: Evonik Operations GmbH
    Inventors: Emmanouil Spyrou, Andrea Diesveld, Susanne Kreischer, Holger Loesch
  • Publication number: 20220081393
    Abstract: The present invention relates to a process for preparing at least one ethylenically unsaturated, urethane group-containing compound from i) diisocyanate, ii) at least one compound having at least one hydroxyl group and at least one ethylenically unsaturated, polymerizable group, iii) and optionally at least one hydroxyl group-containing compound, in which 1 diisocyanate is subjected to a determination of the peroxide content immediately prior to the reaction, 2 a) if the determined peroxide content is greater than or equal to 20 mmol/kg, the diisocyanate is subjected to distillative purification until the determined peroxide content is less than 20 mmol/kg, or or b) if the determined peroxide content is less than 20 mmol/kg, no distillative purification is performed, and 3.
    Type: Application
    Filed: September 10, 2021
    Publication date: March 17, 2022
    Inventors: Emmanouil Spyrou, Holger Loesch, Susanne Kreischer, Andrea Diesveld, Andrea Thesing
  • Publication number: 20210403417
    Abstract: The invention relates to a process for preparing a diisocyanate of the formula (A) where R is selected from the group consisting of alkyl, aryl, and combinations thereof, comprising the following process steps in the indicated order; 1) providing an intermediate of the formula (B) with a process using lysine and urea and ?where R and each R? are independently selected from the group consisting of alkyl, aryl, and combinations thereof; and 2) thermolytic cleavage of the intermediate of the formula (B), thereby affording the diisocyanate of the formula (A), and also to the diisocyanate directly prepared therewith.
    Type: Application
    Filed: June 25, 2021
    Publication date: December 30, 2021
    Inventors: Emmanouil Spyrou, Holger Loesch, Susanne Kreischer, Andrea Diesveld, Andrea Thesing, Jörg-Joachim Nitz
  • Publication number: 20210206730
    Abstract: The present invention provides a process for preparing isocyanurate from diisocyanate, in which i) prior to the reaction the peroxide content of the diisocyanate to be used is determined, and thereafter ii) a) if the determined peroxide content is greater than 10 mmol/kg, the diisocyanate is subjected to distillative purification until the determined peroxide content is less than or equal to 10 mmol/kg, orb) if the determined peroxide content is less than or equal to 10 mmol/kg, no further action is taken, and iii) distilled diisocyanate with respect to a) and/or untreated diisocyanate with respect to b) is subsequently converted to isocyanurate.
    Type: Application
    Filed: December 18, 2020
    Publication date: July 8, 2021
    Applicant: Evonik Operations GmbH
    Inventors: Emmanouil Spyrou, Holger Loesch, Susanne Kreischer, Andrea Diesveld, Andrea Thesing
  • Patent number: 10988492
    Abstract: Crosslinkers based on alkoxysilanes and alkoxysilane mixtures containing an isocyanate group can be used as a starting component in the production of coating compositions or as paint binder component, or can be used with adhesive o sealant binders o binder components having g ups reactive toward alkoxysilane groups.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: April 27, 2021
    Assignee: Evonik Operations GmbH
    Inventors: Wiebke Stache, Emmanouil Spyrou, Iris Brückner, Ralf Klawikowski, Jan Pfingsten, Judith Schoder
  • Publication number: 20210108026
    Abstract: The present invention provides compositions consisting of a) at least one metal salt, ammonium salt or phosphonium salt of a strong Brønsted acid and b) at least one primary aliphatic monoamine, processes for preparation thereof and use thereof.
    Type: Application
    Filed: October 5, 2020
    Publication date: April 15, 2021
    Applicant: Evonik Operations GmbH
    Inventors: Emmanouil Spyrou, Holger Loesch, Andrea Thesing, Andrea Diesveld, Susanne Kreischer
  • Patent number: 10793664
    Abstract: A process for preparing trimers and/or oligomers of diisocyanates is disclosed along with a composition of trimers and/or oligomers formed from diisocyanates and monomeric diisocyanates obtainable by reaction of I. 5-94.999% by weight of A) at least one diisocyanate having a boiling point of less than 250° C. (at standard pressure) and/or B) at least one diisocyanate having a boiling point of 250-350° C. (at standard pressure), in the presence of II. 94.999-5% by weight of C) at least one diisocyanate having a boiling point above 350° C. (at standard pressure), III. in the presence of at least one trimerization catalyst in amounts of 0.001% to 5% by weight, and the amounts of I.-III. add up to 100% by weight.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: October 6, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Rainer Lomölder, Christoph Nacke, Melanie Sajitz, Emmanouil Spyrou, Dirk Hoppe
  • Publication number: 20200190248
    Abstract: The present invention relates to compositions comprising a) 20-80% by weight, based on the total mass of constituents of the composition, of at least one sulfonic acid functionalized with at least one hydroxy and/or amino group and/or at least one sulfonic acid derivative functionalized with at least one hydroxy and/or amino group and b) 80-20% by weight, based on the total mass of constituents of the composition, of at least one compound having at least two OH groups, a method for the preparation thereof and use thereof.
    Type: Application
    Filed: December 6, 2019
    Publication date: June 18, 2020
    Applicant: Evonik Operations GmbH
    Inventors: Emmanouil Spyrou, Iris Brückner, Judith Schoder
  • Publication number: 20200172723
    Abstract: The present invention relates to compositions comprising at least one epoxy resin, at least one amine having at least two secondary amino groups that are both part of an organic ring system, and at least one alkyl alcohol optionally substituted by at least one aromatic radical and/or by at least one alkenyl radical, to processes for production thereof and to the use thereof.
    Type: Application
    Filed: November 15, 2019
    Publication date: June 4, 2020
    Applicant: Evonik Operations GmbH
    Inventors: Emmanouil Spyrou, Dirk Fuchsmann, Britta Kohlstruk, Annette Sandkühler