Patents by Inventor Kan-Nan Chan

Kan-Nan Chan 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).

  • Preparation method of polyurethane resin
    Patent number: 10570254
    Abstract: A preparation method of a polyurethane resin including the following steps is provided. A liquid polyamine compound is placed in a continuous reaction system, and the liquid polyamine compound is circulated in the continuous reaction system. A solid bis(cyclic carbonate) and a solid catalyst are placed in the continuous reaction system to mix the solid bis(cyclic carbonate), solid catalyst, and liquid polyamine compound to form a heterogeneous mixture. The heterogeneous mixture is heated in the continuous reaction system in a microwave manner, such that the heterogeneous mixture reacts to form a polyurethane resin.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: February 25, 2020
    Assignees: National Tsing Hua University, Chang Chun Plastics Co., Ltd., Chang Chun Petrochemical Co., Ltd.
    Inventors: David S. H. Wong, Kan-Nan Chan, Ping-Lin Yang, An-Pang Tu, En-Ko Lee
  • PREPARATION METHOD OF POLYURETHANE RESIN
    Publication number: 20190077912
    Abstract: A preparation method of a polyurethane resin including the following steps is provided. A liquid polyamine compound is placed in a continuous reaction system, and the liquid polyamine compound is circulated in the continuous reaction system. A solid bis(cyclic carbonate) and a solid catalyst are placed in the continuous reaction system to mix the solid bis(cyclic carbonate), solid catalyst, and liquid polyamine compound to form a heterogeneous mixture. The heterogeneous mixture is heated in the continuous reaction system in a microwave manner, such that the heterogeneous mixture reacts to form a polyurethane resin.
    Type: Application
    Filed: October 31, 2017
    Publication date: March 14, 2019
    Applicants: National Tsing Hua University, Chang Chun Plastics Co., Ltd., Chang Chun Petrochemical Co., Ltd.
    Inventors: David S. H. Wong, Kan-Nan Chan, Ping-Lin Yang, An-Pang Tu, En-Ko Lee