Patents by Inventor Manjun Li

Manjun Li 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).

  • Polymer expanding material used in infiltration or seepage watery environment and preparation method thereof
    Patent number: 11618802
    Abstract: The present invention relates to a polymer expanding material in infiltration or seepage multi-water environment and a preparation method thereof, belonging to a technical field of polymer expanding foam materials. The polymer expanding material includes the following parts of materials by weight: 20-30 parts of rosin polyester polyol, 20-50 parts of isocyanate, 20-40 parts of PhireGuard® MB-512, 5-10 parts of HFO-1233zd, 1-2 parts of surfactant, 0.01-1 part of catalyst, and 0.01 parts of benzoyl chloride. The present invention has high sand fixing body strength, fast curing speed, good elastoplasticity, good pouring property and permeability, and good expanding property, which is suitable for infiltration or seepage multi-water environment, especially for dam infiltration, piping, and other problems during construction and subsequent operation of water conservancy projects.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: April 4, 2023
    Assignees: Zhengzhou University, SAFEKEY Engineering Technology (Zhengzhou), Ltd.
    Inventors: Hongyuan Fang, Peng Zhao, Lei Wang, Yanhui Pan, Bin Li, Manjun Li, Kangjian Yang
  • Polymer expanding material used in infiltration or seepage watery environment and preparation method thereof
    Publication number: 20200255579
    Abstract: The present invention relates to a polymer expanding material in infiltration or seepage multi-water environment and a preparation method thereof, belonging to a technical field of polymer expanding foam materials. The polymer expanding material includes the following parts of materials by weight: 20-30 parts of rosin polyester polyol, 20-50 parts of isocyanate, 20-40 parts of PhireGuard® MB-512, 5-10 parts of HFO-1233zd, 1-2 parts of surfactant, 0.01-1 part of catalyst, and 0.01 parts of benzoyl chloride. The present invention has high sand fixing body strength, fast curing speed, good elastoplasticity, good pouring property and permeability, and good expanding property, which is suitable for infiltration or seepage multi-water environment, especially for dam infiltration, piping, and other problems during construction and subsequent operation of water conservancy projects.
    Type: Application
    Filed: April 27, 2020
    Publication date: August 13, 2020
    Inventors: Hongyuan Fang, Peng Zhao, Lei Wang, Yanhui Pan, Bin Li, Manjun Li, Kangjian Yang