Patents by Inventor Guangyuan MA

Guangyuan MA 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 for esterquats based on oil
    Patent number: 11434193
    Abstract: The present invention relates to a process for producing an esterquat by a transesterification reaction of a fatty acid oil or a mixture comprising one or more fatty acid oils and one or more fatty acids with a tertiary hydroxy amine and then a quaternization reaction. Esterquats obtained by the method of the invention show beneficial properties in particular when used as active component in fabric softener materials.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: September 6, 2022
    Assignee: Evonik Operations GmbH
    Inventors: Guangyuan Ma, Xiangyu Yang, Xiaoling Wang, Hans Henning Wenk, Jiashu Wang, Jianmin Xu, Liang Bao
  • PREPARATION METHOD FOR ESTERQUATS BASED ON OIL
    Publication number: 20210371373
    Abstract: The present invention relates to a process for producing an esterquat by a transesterification reaction of a fatty acid oil or a mixture comprising one or more fatty acid oils and one or more fatty acids with a tertiary hydroxy amine and then a quaternization reaction. Esterquats obtained by the method of the invention show beneficial properties in particular when used as active component in fabric softener materials.
    Type: Application
    Filed: June 26, 2018
    Publication date: December 2, 2021
    Applicant: EVONIK OPERATIONS GMBH
    Inventors: Guangyuan MA, Xiangyu YANG, Xiaoling WANG, Hans Henning WENK, Jiashu WANG, Jianmin XU, Liang BAO