Patents by Inventor Yongzhi Tan

Yongzhi Tan 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).

  • Formaldehyde-scavenging coating composition
    Patent number: 10676638
    Abstract: A curable resin composition includes an acetoacetyl functional unsaturated polyester with a branched molecular skeleton containing olefinically unsaturated functional groups therein and acetoacetyl functional groups chemically bonded to the branched molecular skeleton. The acetoacetyl functional unsaturated polyester contains at least 2 wt % of the olefinically unsaturated functional groups, relative to the total weight of the acetoacetyl functional unsaturated polyester, and at least 20 wt % of the acetoacetyl functional groups, relative to the total weight of the acetoacetyl functional unsaturated polyester. The curable resin composition can be used to formulate coating compositions.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: June 9, 2020
    Assignee: Valspar Sourcing, Inc.
    Inventors: Xiaorui Chen, Yanchang Gan, Yongzhi Tan, Xi Zhao, Gang Duan
  • FORMALDEHYDE-SCAVENGING COATING COMPOSITION
    Publication number: 20190023937
    Abstract: A curable resin composition includes an acetoacetyl functional unsaturated polyester that includes a branched molecular skeleton containing olefinically unsaturated functional groups therein and acetoacetyl functional groups chemically bonded to the branched molecular skeleton. The acetoacetyl functional unsaturated polyester contains at least 2 wt % of the olefinically unsaturated functional groups, relative to the total weight of the acetoacetyl functional unsaturated polyester. The acetoacetyl functional unsaturated polyester contains at least 20 wt % of the acetoacetyl functional groups, relative to the total weight of the acetoacetyl functional unsaturated polyester. The curable resin composition can be used to formulate coating compositions.
    Type: Application
    Filed: January 19, 2017
    Publication date: January 24, 2019
    Inventors: Xiaorui Chen, Yanchang Gan, Yongzhi Tan, Xi Zhoa, Gang Duan