Patents by Inventor Ulrike Hees

Ulrike Hees 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).

  • Novel polymer dispersant having hyperbranched structures
    Publication number: 20040097685
    Abstract: The invention relates to the use of polyurethanes having hyperbranched structures, selected from hyperbranched polyurethanes with at least one group that has an affinity to pigments and modified hyperbranched polyurethanes, as polymer dispersants for pigments. The invention is preferably further characterized in that a hyperbranched polyurethane having 2 to 100 NCO groups and a molecular weight of 500 to 50.000 g is reacted with one or more polyether derivatives.
    Type: Application
    Filed: September 29, 2003
    Publication date: May 20, 2004
    Inventors: Bernd Bruchmann, Martin Konemann, Ulrike Hees
  • Use of poly (meth) acrylate units containing suphonate groups in binding agents for magnetic storage media
    Publication number: 20040030047
    Abstract: The invention relates to a polyurethane comprising at least one anionic active group L. The anionic active group L is bound to a segment G in the polyurethane, said segment containing monomers that have been linked by radical polymerisation. The invention also relates to a binding agent composition containing an inventive polyurethane, to a method for the production thereof and to the use of polyurethanes of this type for producing magnetic recording media.
    Type: Application
    Filed: June 19, 2003
    Publication date: February 12, 2004
    Inventors: Ulrike Hees, Hans-Guenter Bohrmann, Benedikt Raether, Ria Kress, Albert Kohl, Lothar Schulz
  • Dispersant
    Patent number: 6680355
    Abstract: Disclosed is a dispersant obtainable by reacting (i) a di- or polyfunctional isocyanate with (ii) an HX-terminated polymeric compound, where X is COO, O, S or NR1 and R1 is H or C1-C6-alkyl; and either (iii) an HY-terminated homopolymer of a monomer selected from the group consisting of N-vinylamides, N-vinyllactams and vinyl- or allyl-substituted nitrogenous heterocycles or copolymer of one or more of the monomers mentioned and optionally further monomers, where Y is COO, O, S or NR2 and R2 is H or C1-C6-alkyl; or (iv) an HY-functional organic phosphonic ester, where Y is as defined above. The dispersant is especially useful for dispersing pigments and for preparing inkjet inks.
    Type: Grant
    Filed: April 24, 2001
    Date of Patent: January 20, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz Weingart, Roman Benedikt Raether, Stephan Bauer, Ulrike Hees, Manfred Mielke, Ulrike Schlösser, Rüdiger Sens
  • Filler-containing binder composition, its preparation and its use
    Patent number: 6433070
    Abstract: A binder composition, at least containing an inorganic filler and a thermoplastic block copolyurethane having in each case at least one soft segment (A) and at least one hard segment (B), at least one hard segment (B) containing a structural element of the formula I is used in particular for the production of magnetic recording media.
    Type: Grant
    Filed: September 14, 2000
    Date of Patent: August 13, 2002
    Assignee: Emtec Magnetics GmbH
    Inventors: Benedikt Raether, Ulrike Hees, Ria Kress, Albert Kohl, Richard Bradshaw, Gerhard Maier
  • Binder composition for a magnetic recording medium
    Publication number: 20010021762
    Abstract: A binder composition for a magnetic recording medium comprises at least one polyurethane having a structural unit according to the formula I 1
    Type: Application
    Filed: February 7, 2001
    Publication date: September 13, 2001
    Inventors: Ulrike Hees, Benedikt Raether, Albert Kohl, Ria Kress, Rainer Blum
  • Sulfonic acid compounds, processes for the preparation thereof and use thereof
    Publication number: 20010016622
    Abstract: The present invention relates to a sulfonic acid compound of the formula I 1
    Type: Application
    Filed: February 7, 2001
    Publication date: August 23, 2001
    Inventors: Rainer Blum, Ulrike Hees, Roman Benedikt Raether
  • Binder composition for a magnetic recording medium
    Publication number: 20010016641
    Abstract: A binder composition for a magnetic recording medium comprises at least one polyurethane having a structural unit according to the formula I 1
    Type: Application
    Filed: February 7, 2001
    Publication date: August 23, 2001
    Inventors: Ulrike Hees, Benedikt Raether, Albert Kohl, Ria Kress, Rainer Blum