Patents by Inventor Jan Wevers

Jan Wevers 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 the production of benzophenonen
    Publication number: 20060009659
    Abstract: A process for preparing benzophenones of the formula I, where X may be chlorine, hydroxyl, methoxy or C1-C6-alkylcarbonyloxy, and Y may be chlorine or bromine, by reacting an acid chloride of the formula II where X and Y are as defined above with 3,4,5-trimethoxytoluene, which comprises carrying out the reaction in the presence of a) an aromatic hydrocarbon as a diluent and b) from 0.01 to 0.2 mol % of an iron catalyst, based on the acid chloride, c) at a temperature between 60° C. and the boiling point of the particular diluent.
    Type: Application
    Filed: December 1, 2003
    Publication date: January 12, 2006
    Applicant: BASF Aktiengesellschaft
    Inventors: Volker Maywald, Nico Hoffmann, Michael Keil, Uwe Vogelbacher, Jan Wevers