Patents by Inventor Zichen Ling

Zichen Ling 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).

  • Waterborne one component non-isocyanate polyurethane epoxy hybrid coatings
    Patent number: 12686789
    Abstract: A method of preparing a composition for a one-package (1 K) waterborne non isocyanate polyurethane epoxy hybrid coating includes providing a cyclic carbonate; combining the cyclic carbonate with an internal emulsifier and a diamine to thereby obtain a non-isocyanate polyurethane (NIPU) prepolymer; subjecting the NIPU prepolymer to chain extension by combining the NIPU prepolymer with an epoxy resin, to thereby obtain a chain extended NIPU polymer; subjecting the chain extended NIPU polymer to neutralization by combining the chain extended NIPU polymer with a neutralizing agent, to thereby obtain a neutralized NIPU polymer; and dispersing the neutralized NIPU polymer in water to thereby provide a waterborne NIPU liquid dispersion.
    Type: Grant
    Filed: October 14, 2022
    Date of Patent: July 21, 2026
    Assignee: THE UNIVERSITY OF AKRON
    Inventors: Qixin Zhou, Cheng Zhang, Zichen Ling
  • WATERBORNE ONE COMPONENT NON-ISOCYANATE POLYURETHANE EPOXY HYBRID COATINGS
    Publication number: 20230183523
    Abstract: A method of preparing a composition for a one-package (1 K) waterborne non isocyanate polyurethane epoxy hybrid coating includes providing a cyclic carbonate; combining the cyclic carbonate with an internal emulsifier and a diamine to thereby obtain a non-isocyanate polyurethane (NIPU) prepolymer; subjecting the NIPU prepolymer to chain extension by combining the NIPU prepolymer with an epoxy resin, to thereby obtain a chain extended NIPU polymer; subjecting the chain extended NIPU polymer to neutralization by combining the chain extended NIPU polymer with a neutralizing agent, to thereby obtain a neutralized NIPU polymer; and dispersing the neutralized NIPU polymer in water to thereby provide a waterborne NIPU liquid dispersion.
    Type: Application
    Filed: October 14, 2022
    Publication date: June 15, 2023
    Inventors: Qixin Zhou, Cheng Zhang, Zichen Ling