Patents by Inventor Dangge GAO

Dangge GAO 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: 10676798
    Abstract: The invention relates to a poly silsesquioxane-acrylic nanocomposite auxiliary for leather process and its preparation method. By mixing octavinyl silsesquioxane, organic solvent, ammonium persulfate, distilled water and surfactant in one system, and adding acrylic acid dropwise into the mixing system, cooling to adjust pH to obtain poly silsesquioxane-acrylic nanocomposite auxiliary for leather process. The auxiliary obtained in this invention is easily to penetrate into gap of the collagen fibers, and forms nano and micro-scale combination with the leather collagen, which can further improve the multi-point combination of the acrylic polymer with the collagen. Thus, the filling property of the leather that treated by the auxiliary is improved without affect the yield of leather, and the chromium content in the waste water is significantly reduced.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: June 9, 2020
    Assignee: SHAANXI UNIVERSITY OF SCIENCE & TECHNOLOGY
    Inventors: Jianzhong Ma, Lu Jia, Dangge Gao, Bin Lv
  • Publication number: 20190284650
    Abstract: The invention relates to a poly silsesquioxane-acrylic nanocomposite auxiliary for leather process and its preparation method. By mixing octavinyl silsesquioxane, organic solvent, ammonium persulfate, distilled water and surfactant in one system, and adding acrylic acid dropwise into the mixing system, cooling to adjust pH to obtain poly silsesquioxane-acrylic nanocomposite auxiliary for leather process. The auxiliary obtained in this invention is easily to penetrate into gap of the collagen fibers, and forms nano and micro-scale combination with the leather collagen, which can further improve the multi-point combination of the acrylic polymer with the collagen. Thus, the filling property of the leather that treated by the auxiliary is improved without affect the yield of leather, and the chromium content in the waste water is significantly reduced.
    Type: Application
    Filed: January 13, 2017
    Publication date: September 19, 2019
    Inventors: Jianzhong MA, Lu JIA, Dangge GAO, Bin LV
  • Patent number: 9970069
    Abstract: A sulfonatocalixarene tanning agent for leather tanning and a preparation method comprises: using resorcinol and aldehyde monomers as raw materials for the tanning agent; adding an ethanol solution into the resorcinol, dropwise adding an inorganic strong acid catalyst and aldehyde derivatives, heating to react, cooling, carrying out suction filtration, repeatedly washing with ethanol and distilled water, and drying to obtain resorcinol calixarene; and weighing the resorcinol calixarene, and adding a sulfonating agent to react, thereby obtaining a sulfonatocalixarene tanning agent aqueous solution.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: May 15, 2018
    Assignee: SHAANXI UNIVERSITY OF SCIENCE & TECHNOLOGY
    Inventors: Jianzhong Ma, Yongxiang Zhou, Dangge Gao, Panpan Zhang, Bin Lv
  • Publication number: 20170137903
    Abstract: A sulfonatocalixarene tanning agent for leather tanning and a preparation method comprises: using resorcinol and aldehyde monomers as raw materials for the tanning agent; adding an ethanol solution into the resorcinol, dropwise adding an inorganic strong acid catalyst and aldehyde derivatives, heating to react, cooling, carrying out suction filtration, repeatedly washing with ethanol and distilled water, and drying to obtain resorcinol calixarene; and weighing the resorcinol calixarene, and adding a sulfonating agent to react, thereby obtaining a sulfonatocalixarene tanning agent aqueous solution.
    Type: Application
    Filed: June 18, 2015
    Publication date: May 18, 2017
    Applicant: SHAANXI UNIVERSITY OF SCIENCE & TECHNOLOGY
    Inventors: Jianzhong MA, Yongxiang ZHOU, Dangge GAO, Panpan ZHANG, Bin LV