Patents by Inventor Yongjun QIU

Yongjun QIU 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).

  • Method for preparing biobased nylon: polylactam
    Patent number: 10308764
    Abstract: The invention relates to a preparation method of green nylon poly butyrolactams, the biological materials of GABA in vacuum under the condition of high temperature melt decomposition and purified butyrolactams, then by vacuum polymerization of green nylon poly butyrolactams. Compared with the prior art, the invention is prepared by biological method for the synthesis of a wide range of sources, to solve the problem of raw material supply PA4 for mass production, reduce the cost of reaction, and the reaction condition is simple, easy to implement simplified synthesis steps, from the laboratory to the transformation of industrial production.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: June 4, 2019
    Assignee: EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Liming Zhao, Jie Wei, Jun Qian, Juan Ma, Xiaofeng Tang, Yingyang Wu, Yongjun Qiu
  • A METHOD FOR PREPARING BIOBASED NYLON: POLYLACTAM
    Publication number: 20180223043
    Abstract: The invention relates to a preparation method of green nylon poly butyrolactams, the biological materials of GABA in vacuum under the condition of high temperature melt decomposition and purified butyrolactams, then by vacuum polymerization of green nylon poly butyrolactams. Compared with the prior art, the invention is prepared by biological method for the synthesis of a wide range of sources, to solve the problem of raw material supply PA4 for mass production, reduce the cost of reaction, and the reaction condition is simple, easy to implement simplified synthesis steps, from the laboratory to the transformation of industrial production.
    Type: Application
    Filed: July 13, 2015
    Publication date: August 9, 2018
    Inventors: Liming ZHAO, Jie WEI, Jun QIAN, Juan MA, Xiaofeng TANG, Yingyang WU, Yongjun QIU