Patents by Inventor Martin Gercke

Martin Gercke 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).

  • Modified cationic polymers, their preparation and their use in papermaking
    Patent number: 6716311
    Abstract: The invention relates to modified cationic polymers which can be obtained by reacting (a) water-soluble, polymeric compounds containing NH groups with (b) compounds which are at least bifunctional with regard to NH groups, which contain at least one alkyl radical or alkenyl radical having at least 8 C atoms, and which contain, as a functional group, a halohydrin, epoxide, carboxyl, chloroformate or isocyanate group or a halogen atom. The invention also relates to a method for producing the polymers by reacting the compounds of groups (a) and (b), and to the use of the modified cationic polymers during the production of paper as fixing agents for papermaking stock containing interfering substances.
    Type: Grant
    Filed: May 4, 2001
    Date of Patent: April 6, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Jürgen Decker, Norbert Mahr, Anton Esser, Hubert Meixner, Rainer Dyllick-Brenzinger, Martin aus dem Kahmen, Martin Gercke