Patents by Inventor Matthias E. Gurr

Matthias E. Gurr 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).

  • Moisture curable polyurethane hot melt adhesive composition having low levels of diisocyanate monomer
    Patent number: 11845886
    Abstract: A moisture curable polyurethane hot melt adhesive composition and a process for making the same are disclosed. The moisture curable polyurethane hot melt adhesive composition includes an isocyanate-terminated polyurethane prepolymer that is the reaction product of a diisocyanate monomer component that includes at least 20% by weight asymmetrical diisocyanate monomer based on the weight of the diisocyanate monomer component and symmetrical diisocyanate monomer, at least one polyol having a number average molecular weight greater than 1000 g/mole, a monofunctional compound that includes one isocyanate-reactive group and has a molecular weight no greater than 400 g/mole, and a multifunctional compound that includes at least two isocyanate-reactive groups and has a molecular weight no greater than 400 g/mole.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: December 19, 2023
    Assignee: H.B. Fuller Company
    Inventors: Brian W. Carlson, Sudipto Das, Daniel J. Van Dyke, Matthias E. Gurr, Rituparna Paul
  • MOISTURE CURABLE POLYURETHANE HOT MELT ADHESIVE COMPOSITION HAVING LOW LEVELS OF DIISOCYANATE MONOMER
    Publication number: 20200407609
    Abstract: A moisture curable polyurethane hot melt adhesive composition and a process for making the same are disclosed. The moisture curable polyurethane hot melt adhesive composition includes an isocyanate-terminated polyurethane prepolymer that is the reaction product of a diisocyanate monomer component that includes at least 20% by weight asymmetrical diisocyanate monomer based on the weight of the diisocyanate monomer component and symmetrical diisocyanate monomer, at least one polyol having a number average molecular weight greater than 1000 g/mole, a monofunctional compound that includes one isocyanate-reactive group and has a molecular weight no greater than 400 g/mole, and a multifunctional compound that includes at least two isocyanate-reactive groups and has a molecular weight no greater than 400 g/mole.
    Type: Application
    Filed: June 25, 2020
    Publication date: December 31, 2020
    Inventors: Brian W. Carlson, Sudipto Das, Daniel J. Van Dyke, Matthias E. Gurr, Rituparna Paul