Patents by Inventor Yantao Hao

Yantao Hao 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 resorcinol through micro-channel reaction
    Patent number: 11760709
    Abstract: The present disclosure provides a method for preparing resorcinol through micro-channel reaction. In the method, resorcinol is prepared through micro-channel reaction using m-aminophenol as a raw material, a diazo salt is synthesized at 0° C. or more, hydrolysis of the diazo salt is performed at 90° C. or less, and then reaction conditions are reduced; the reaction time is decreased from traditional 10 hours to less than 2 minutes, and therefore the reaction time is significantly shortened; the purity of a product is 75% or more, which is significantly improved.
    Type: Grant
    Filed: May 25, 2021
    Date of Patent: September 19, 2023
    Assignee: INNER MONGOLIA SHENG TANG INTERNATIONAL MONGOLIAN
    Inventors: Weidong Liu, Yantao Hao, Guodong Liang, Qinqin Gao, Pengshuai Li, Ting Zhang
  • METHOD FOR PREPARING RESORCINOL THROUGH MICRO-CHANNEL REACTION
    Publication number: 20220119330
    Abstract: The present disclosure provides a method for preparing resorcinol through micro-channel reaction. In the method, resorcinol is prepared through micro-channel reaction using m-aminophenol as a raw material, a diazo salt is synthesized at 0° C. or more, hydrolysis of the diazo salt is performed at 90° C. or less, and then reaction conditions are reduced; the reaction time is decreased from traditional 10 hours to less than 2 minutes, and therefore the reaction time is significantly shortened; the purity of a product is 75% or more, which is significantly improved.
    Type: Application
    Filed: May 25, 2021
    Publication date: April 21, 2022
    Inventors: Weidong Liu, Yantao Hao, Guodong Liang, Qinqin Gao, Pengshuai Li, Ting Zhang