Patents Examined by Marian C. Knod
  • Process for the production of neutralized polysaccharide-based polycarboxylates
    Patent number: 5892027
    Abstract: A process for producing solid polycarboxylic acid salts from polysaccharides with gaseous nitrogen dioxide and dinitrogen tetroxide to at least partially convert the primary alcohol groups of the polysaccharides into carboxyl groups and form a solid polycarboxylic acid and then mixing the polycarboxylic acid with a solid neutralizing agent to at least partially neutralized the carboxylic acid groups of the polycarboxylic acid.
    Type: Grant
    Filed: October 7, 1997
    Date of Patent: April 6, 1999
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Thomas Moeller, Herbert Fischer