Patents by Inventor Hans-Jurgen Sladek

Hans-Jurgen Sladek 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).

  • Block polymers containing ester groups as defoamers for aqueous systems
    Patent number: 5710207
    Abstract: A method of using compositions as foam regulators for water-based systems with a tendency to foam is provided. The method employs a block copolymer containing ester groups corresponding to general formula (I):A--(CH.sub.2 CH.sub.2 O).sub.n --B (I)in which n is an integer of 4 to 300, A is an optionally polymeric hydroxycarboxylic acid function and B is hydrogen, an alkyl or alkenyl radical containing 1 to 22 carbon atoms, a phenyl or benzyl radical or has the same meaning as A. Also provided is a granular free-flowing foam regulating formulation which contains 0.5% by weight to 30% by weight of the block copolymer containing ester groups adsorbed onto from 70% by weight to 99.5% by weight of a granular, substantially inorganic phosphate-free support material.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: January 20, 1998
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Thomas Moller, Ulrich Eicken, Herbert Fischer, Horst-W. Wollenweber, Wolfgang Gress, Christian de Haut, Ulrike Mahler, Manfred Gorzinski, Hans-Jurgen Sladek