Patents Assigned to HUNAN ASTAR BIO-CHEMICAL TECHNOLOGY CO., LTD.
  • Method for preparing methanedisulfonic acid
    Patent number: 9440915
    Abstract: Disclosed is a method for preparing methanedisulfonic acid, comprising an acidification, wherein the acidification comprises that methanedisulfonate reacts with an acidifier to form a mixture containing methanedisulfonic acid. The disclosure has high yield, low cost, and the process are environmental friendly.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: September 13, 2016
    Assignee: HUNAN ASTAR BIO-CHEMICAL TECHNOLOGY CO., LTD.
    Inventor: Zongming Yi
  • Method for preparing methanedisulfonic acid
    Publication number: 20150353484
    Abstract: Disclosed is a method for preparing methanedisulfonic acid, comprising an acidification, wherein the acidification comprises that methanedisulfonate reacts with an acidifier to form a mixture containing methanedisulfonic acid. The disclosure has high yield, low cost, and the process are environmental friendly.
    Type: Application
    Filed: September 28, 2012
    Publication date: December 10, 2015
    Applicant: HUNAN ASTAR BIO-CHEMICAL TECHNOLOGY CO., LTD.
    Inventor: Zongming Yi