Patents by Inventor Helge Braun

Helge Braun 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: 12091377
    Abstract: Organic isocyanates are converted to ureas by heating in the presence of certain cobalt, magnesium, chromium and lanthanide series organometallic catalysts. The process requires no water or other reactants. The process is particularly useful for removing small quantities of monoisocyanates from a solvent stream recovered from a polyisocyanate manufacturing process. The urea compounds in some instances can be recycled back into the polyisocyanate manufacturing process and reacted with polyisocyanate compounds to form biurets.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: September 17, 2024
    Assignees: Dow Global Technologies LLC., Dow Portugal Produtos Quimicos Sociedade Unipessoal, LDA
    Inventors: Robert E. Hefner, Jr., Helge Braun, Armenio Costa, Brian Cramm
  • Patent number: 12071394
    Abstract: Monoisocyanate impurities are removed from a process stream obtained when solvent is separated from a polyisocyanate product. The monoisocyanates are reacted with amine compounds at specific molar ratios to produce ureas. The ureas can be discarded by burning, landfilling or otherwise. Alternatively the ureas can be recycled back into the polyisocyanate manufacturing process, where they are formed into biuret compounds that can remain with the polyisocyanate product.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: August 27, 2024
    Assignees: Dow Global Technologies LLC, Dow, Portugal Produtos Quimicos, Sociedade Unipessoal
    Inventors: Robert E. Hefner, Jr., Helge Braun, Armenio Costa, Brian Cramm
  • Patent number: 12030836
    Abstract: Phenyl isocyanates are removed from a solvent stream obtained from an MDI and/or PMDI manufacturing process by reaction in the presence of a carbodiimidization catalyst to form the corresponding N,N-diphenylcarbodiimides. The N,N-diphenylcarbodiimides can be recycled into the MDI and/or PMDI manufacturing process where they can react with MDI and/or PMDI to form uretonimines. The uretonimines have at most minimal effect on the properties and usefulness of the MDI and/or PMDI product and so can be left in the MDI and/or PMDI product.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: July 9, 2024
    Assignees: Dow Global Technologies LLC, Dow Portugal Produtos Quimicos, Sociedade Unipessoal, LDA
    Inventors: Robert E. Hefner, Jr., Helge Braun, Armenio Costa, Brian Cramm
  • Patent number: 11312809
    Abstract: Recovery times and/or airflow of flexible polyurethane foam is increased by including certain tackifiers in the foam formulation. The tackifiers are characterized in being incompatible with polyol or polyol mixture used to make the foam, having a viscosity of at least 5,000 centipoise at 25 #C and having a glass transition temperature of at most 20 #C. The tackifier is pre-blended with certain monols to form a lower-viscosity blend that is combined with one or more other polyols and a polyisocyanate to form a reaction mixture for producing a polyurethane foam.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: April 26, 2022
    Assignee: Dow Global Technologies LLC
    Inventors: Qinghao Meng, Meagan Broadway, Kaoru Aou, William J. Harris, Felipe A. Donate, Daniel L. Dermody, Christopher Thiede, Van M. Delk, Jr., Helge Braun, Yin Tang, Adam L. Grzesiak
  • Publication number: 20220106264
    Abstract: Phenyl isocyanates are removed from a solvent stream obtained from an MDI and/or PMDI manufacturing process by reaction in the presence of a carbodiimidization catalyst to form the corresponding N,N-diphenylcarbodiimides. The N,N-diphenylcarbodiimides can be recycled into the MDI and/or PMDI manufacturing process where they can react with MDI and/or PMDI to form uretonimines. The uretonimines have at most minimal effect on the properties and usefulness of the MDI and/or PMDI product and so can be left in the MDI and/or PMDI product.
    Type: Application
    Filed: January 23, 2020
    Publication date: April 7, 2022
    Inventors: Robert E. Hefner, Jr., Helge Braun, Armenio Costa, Brian Cramm
  • Publication number: 20220002237
    Abstract: Organic isocyanates are converted to ureas by heating in the presence of certain cobalt, magnesium, chromium and lanthanide series organometallic catalysts. The process requires no water or other reactants. The process is particularly useful for removing small quantities of monoisocyanates from a solvent stream recovered from a polyisocyanate manufacturing process. The urea compounds in some instances can be recycled back into the polyisocyanate manufacturing process and reacted with polyisocyanate compounds to form biurets.
    Type: Application
    Filed: October 31, 2019
    Publication date: January 6, 2022
    Inventors: Robert E. Hefner, Jr., Helge Braun, Armenio Costa, Brian Cramm
  • Publication number: 20210403418
    Abstract: Monoisocyanate impurities are removed from a process stream obtained when solvent is separated from a polyisocyanate product. The monoisocyanates are reacted with amine compounds at specific molar ratios to produce ureas. The ureas can be discarded by burning, landfilling or otherwise. Alternatively the ureas can be recycled back into the polyisocyanate manufacturing process, where they are formed into biuret compounds that can remain with the polyisocyanate product.
    Type: Application
    Filed: July 31, 2019
    Publication date: December 30, 2021
    Inventors: Robert E. Hefner, Jr., Helge Braun, Armenio Costa, Brian Cramm
  • Publication number: 20210061941
    Abstract: Recovery times and/or airflow of flexible polyurethane foam is increased by including certain tackifiers in the foam formulation. The tackifiers are characterized in being incompatible with polyol or polyol mixture used to make the foam, having a viscosity of at least 5,000 centipoise at 25#C and having a glass transition temperature of at most 20#C. The tackifier is pre-blended with certain monols to form a lower-viscosity blend that is combined with one or more other polyols and a polyisocyanate to form a reaction mixture for producing a polyurethane foam.
    Type: Application
    Filed: March 8, 2019
    Publication date: March 4, 2021
    Applicant: Dow Global Technologies LLC
    Inventors: Qinghao MENG, Meagan BROADWAY, Kaoru AOU, William J. HARRIS, Felipe A. DONATE, Daniel L. DERMODY, Christopher P. DONATE, Van M. DELK, JR., Helge BRAUN
  • Patent number: 7303732
    Abstract: A tubular reactor characterized by having short static mixing elements separated by coalescing zones is used to conduct multiphase liquid/liquid reactions. Small droplets of one of the phases are dispersed into the other phase by the static mixing elements. These droplets coalesce and at least partially phase separate as the mixture passes through the subsequent coalescing zone. The tubular reactor is particularly suitable for nitrating organic compounds while forming low levels of improperly nitrated by-products and low levels of nitrophenolics.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: December 4, 2007
    Assignee: Dow Global Technologies Inc.
    Inventors: Paul A. Gillis, Helge Braun, Joerg Schmidt, Jan Willem Verwijs, Harald Velten, Kristina Platkowski
  • Patent number: 6562247
    Abstract: A tubular reactor characterized by having short static mixing elements separated by coalescing zones is used to conduct multiphase liquid/liquid reactions. Small droplets of one of the phases are dispersed into the other phase by the static mixing elements. These droplets coalesce and at least partially phase separate as the mixture passes through the subsequent coalescing zone. The tubular reactor is particularly suitable for nitrating organic compounds while forming low levels of improperly nitrated by-products and low levels of nitrophenolics.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: May 13, 2003
    Assignee: Dow Global Technologies Inc.
    Inventors: Paul A. Gillis, Helge Braun, Joerg Schmidt, Jan Willem Verwijs, Harald Velten, Kristina Platkowski
  • Patent number: 6506949
    Abstract: A tubular reactor characterized by having short static mixing elements separated by coalescing zones is used to conduct multiphase liquid/liquid reactions. Small droplets of one of the phases are dispersed into the other phase by the static mixing elements. These droplets coalesce and at least partially phase separate as the mixture passes through the subsequent coalescing zone. The tubular reactor is particularly suitable for nitrating organic compounds while forming low levels of improperly nitrated by-products and low levels of nitrophenolics.
    Type: Grant
    Filed: March 1, 2001
    Date of Patent: January 14, 2003
    Assignee: Dow Global Technologies, Inc.
    Inventors: Paul A. Gillis, Helge Braun, Joerg Schmidt, Jan Willem Verwijs, Harald Velten, Kristina Platkowski
  • Publication number: 20030009064
    Abstract: A tubular reactor characterized by having short static mixing elements separated by coalescing zones is used to conduct multiphase liquid/liquid reactions. Small droplets of one of the phases are dispersed into the other phase by the static mixing elements. These droplets coalesce and at least partially phase separate as the mixture passes through the subsequent coalescing zone. The tubular reactor is particularly suitable for nitrating organic compounds while forming low levels of improperly nitrated by-products and low levels of nitrophenolics.
    Type: Application
    Filed: July 3, 2002
    Publication date: January 9, 2003
    Inventors: Paul A. Gillis, Helge Braun, Joerg Schmidt, Jan Willem Verwijs, Harald Velten, Kristina Platkowski
  • Publication number: 20020193642
    Abstract: A tubular reactor characterized by having short static mixing elements separated by coalescing zones is used to conduct multiphase liquid/liquid reactions. Small droplets of one of the phases are dispersed into the other phase by the static mixing elements. These droplets coalesce and at least partially phase separate as the mixture passes through the subsequent coalescing zone. The tubular reactor is particularly suitable for nitrating organic compounds while forming low levels of improperly nitrated by-products and low levels of nitrophenolics.
    Type: Application
    Filed: July 3, 2002
    Publication date: December 19, 2002
    Inventors: Paul A. Gillis, Helge Braun, Joerg Schmidt, Jan Willem Verwijs, Harald Velten, Kristina Platkowski
  • Publication number: 20010043894
    Abstract: A tubular reactor characterized by having short static mixing elements separated by coalescing zones is used to conduct multiphase liquid/liquid reactions. Small droplets of one of the phases are dispersed into the other phase by the static mixing elements. These droplets coalesce and at least partially phase separate as the mixture passes through the subsequent coalescing zone. The tubular reactor is particularly suitable for nitrating organic compounds while forming low levels of improperly nitrated by-products and low levels of nitrophenolics.
    Type: Application
    Filed: March 1, 2001
    Publication date: November 22, 2001
    Inventors: Paul A. Gillis, Helge Braun, Joerg Schmidt, Jan Willem Verwijs, Harald Velten, Kristina Platkowski