Patents by Inventor Hengtong Wei

Hengtong Wei 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).

  • MULTISTAGE EMULSION POLYMER AND PROCESS OF PREPARING THE SAME
    Publication number: 20230021323
    Abstract: A multistage emulsion polymer comprising a first polymer and a second polymer comprising structural units of a nitrogen-containing heterocyclic monomer at specific weight ratios of the first polymer to the second polymer and a Tg difference between the first and second polymers; the multistage emulsion polymer suitable for use in coating applications to provide coating films with improved dirt pick-up resistance without compromising film formation properties.
    Type: Application
    Filed: December 25, 2019
    Publication date: January 26, 2023
    Inventors: Han Liu, Yuehan Hu, Zhi Juan Gong, Ling Li, Xiangting Dong, Hengtong Wei