Patents by Inventor Shaozhen QI

Shaozhen QI 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).

  • Process for producing surfactant having two head groups and a single tail group per molecule
    Patent number: 11566181
    Abstract: A process for producing a surfactant having two head groups and a single tail group per molecule, including steps of: producing a compound of Formula (1) from ethanol and carbon disulfide; producing a compound of Formula (2) from a carboxylic acid and bromine; producing a compound of Formula (3) from the compound of Formula (2) and methanol; producing a compound of Formula (4) from the compound of Formula (1) and the compound of Formula (3); and producing a compound of Formula (5) from the compound of Formula (4) by a direct oxidation process or by a peracid oxidation process. The surfactant produced by the process has lower critical micelle concentration and enables a lower surface tension of a liquid as compared with prior surfactants with two head groups per molecule, thereby enabling the amount of surfactant required and thus the cost to be substantially reduced.
    Type: Grant
    Filed: July 2, 2021
    Date of Patent: January 31, 2023
    Assignee: TARIM UNIVERSITY
    Inventors: Jianhui Jiang, Yuan Zhang, Yuhui Liu, Shiwei Jiang, Fei Ren, Yanxia Yang, Shaozhen Qi
  • PROCESS FOR PRODUCING SURFACTANT HAVING TWO HEAD GROUPS AND A SINGLE TAIL GROUP PER MOLECULE
    Publication number: 20220080370
    Abstract: A process for producing a surfactant having two head groups and a single tail group per molecule, including steps of: producing a compound of Formula (1) from ethanol and carbon disulfide; producing a compound of Formula (2) from a carboxylic acid and bromine; producing a compound of Formula (3) from the compound of Formula (2) and methanol; producing a compound of Formula (4) from the compound of Formula (1) and the compound of Formula (3); and producing a compound of Formula (5) from the compound of Formula (4) by a direct oxidation process or by a peracid oxidation process. The surfactant produced by the process has lower critical micelle concentration and enables a lower surface tension of a liquid as compared with prior surfactants with two head groups per molecule, thereby enabling the amount of surfactant required and thus the cost to be substantially reduced.
    Type: Application
    Filed: July 2, 2021
    Publication date: March 17, 2022
    Inventors: Jianhui JIANG, Yuan ZHANG, Yuhui LIU, Shiwei JIANG, Fei REN, Yanxia YANG, Shaozhen QI