Patents by Inventor Deborah Burkwit

Deborah Burkwit 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).

  • Thermoplastic acrylonitrile containing copolymer/lignin blends
    Patent number: 11884824
    Abstract: A thermoplastic acrylonitrile containing copolymer/lignin blend, e.g., thermoplastic acrylonitrile-butadiene-styrene copolymer/lignin blend, is provided, whereas the blend comprises (i) an amount of thermoplastic acrylonitrile containing copolymer (e.g., acrylonitrile-butadiene-styrene copolymer); (ii) an amount of lignin; (iii) an amount of compatibilizing agent, such as phthalic anhydride, capable of imparting improved ductility and impact strength to the resultant blend and (iv) optionally an amount of at least one additive to impart specific properties including, but not limited, to resistance to ultraviolet radiation, resistance to oxidation, flame retardance, color, surface friction, or surface static charge accumulation. Methods of improving impact strength and/or ductility of, for example, a thermoplastic acrylonitrile-butadiene-styrene copolymer/lignin blend and articles made therefrom are also disclosed.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: January 30, 2024
    Assignee: Prisma Renewable Composites, LLC
    Inventors: Christopher D. Webb, Adam A. McCall, William M. Sanford, Deborah Burkwit, Darren Baker
  • THERMOPLASTIC ACRYLONITRILE CONTAINING COPOLYMER/LIGNIN BLENDS
    Publication number: 20200325311
    Abstract: A thermoplastic acrylonitrile containing copolymer/lignin blend, e.g., thermoplastic acrylonitrile-butadiene-styrene copolymer/lignin blend, is provided, whereas the blend comprises (i) an amount of thermoplastic acrylonitrile containing copolymer (e.g., acrylonitrile-butadiene-styrene copolymer); (ii) an amount of lignin; (iii) an amount of compatibilizing agent, such as phthalic anhydride, capable of imparting improved ductility and impact strength to the resultant blend and (iv) optionally an amount of at least one additive to impart specific properties including, but not limited, to resistance to ultraviolet radiation, resistance to oxidation, flame retardance, color, surface friction, or surface static charge accumulation. Methods of improving impact strength and/or ductility of, for example, a thermoplastic acrylonitrile-butadiene-styrene copolymer/lignin blend and articles made therefrom are also disclosed.
    Type: Application
    Filed: April 14, 2020
    Publication date: October 15, 2020
    Inventors: Christopher D. Webb, Adam A. McCall, William M. Sanford, Deborah Burkwit, Darren Baker