Patents by Inventor Rudolf Alfred Weinand

Rudolf Alfred Weinand 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).

  • Metal-doped sulfonated ion exchange resin catalysts
    Patent number: 6977314
    Abstract: A method for preparing ketones in greater yield and selectivity compared to previous catalyzed reactions by acid-catalyzed condensation reaction using a metal-doped polysulfonated ion exchange resin catalyst is disclosed. For example, use of polysulfonated ion exchange resins having at least 5.0 milliequivalents sulfonic acid groups/gram catalyst and loaded with metal, such as palladium, provides enhanced yields of methyl isobutyl ketone from the condensation reaction of acetone compared to use of conventional monosulfonated ion exchange resin catalysts.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: December 20, 2005
    Assignee: Rohm and Haas Company
    Inventors: Mark Thornton Vandersall, Rudolf Alfred Weinand
  • Metal-doped sulfonated ion exchange resin catalysts
    Publication number: 20030139629
    Abstract: A method for preparing ketones in greater yield and selectivity compared to previous catalyzed reactions by acid-catalyzed condensation reaction using a metal-doped polysulfonated ion exchange resin catalyst is disclosed. For example, use of polysulfonated ion exchange resins having at least 5.0 milliequivalents sulfonic acid groups/gram catalyst and loaded with metal, such as palladium, provides enhanced yields of methyl isobutyl ketone from the condensation reaction of acetone compared to use of conventional monosulfonated ion exchange resin catalysts.
    Type: Application
    Filed: December 3, 2002
    Publication date: July 24, 2003
    Inventors: Mark Thornton Vandersall, Rudolf Alfred Weinand