Patents by Inventor Bardo Becker

Bardo Becker 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 of preparing 2-mercaptobenzothiazole and benzothiazole
    Patent number: 5276206
    Abstract: 2-mercaptobenzothiazole and benzothiazole are prepared from dibenzothiazyl disulphide by reacting dibenzothiazyl disulphide in the presence of an alkali and/or alkaline earth hydroxide solution at temperatures from 40.degree. to 120.degree. C. until a constant pH value in the range from 8 to 10 has been reached, then treating the reaction mixture with an aqueous solution of mineral acids at temperatures from 10.degree. to 100.degree. C., and subsequently removing benzothiazole by distillation or extraction from the reaction mixture containing 2-mercaptobenzothiazole.
    Type: Grant
    Filed: May 17, 1993
    Date of Patent: January 4, 1994
    Assignee: Bayer Aktiengesellschaft
    Inventors: Adolf Sicheneder, Bardo Becker