Patents by Inventor Rainer Az

Rainer Az 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).

  • Textile dye preparations
    Patent number: 5902356
    Abstract: The present invention relates to liquid or pulverulent textile dye preparations including one or more dispersants based on an alkoxylated and carboxylic-esterified castor oil of the general formula I ##STR1## where A, X.sup.1, X.sup.2, Z.sup.1, Z.sup.2, Z.sup.3, n.sup.1 and n.sup.2 are each as defined in Claim 1.
    Type: Grant
    Filed: July 3, 1997
    Date of Patent: May 11, 1999
    Assignee: DyStar Japan Ltd.
    Inventors: Ulrich Buhler, Hubert Kruse, Rainer Az
  • Surfactant triazine compounds and their use
    Patent number: 5240499
    Abstract: Polymeric, water-soluble triazine compounds which contain both basic and acidic groups in the molecule have out-standing surfactant properties and are suitable for the preparation of dispersions of solids, preferably of dispersions of inorganic and/or organic pigments, in an aqueous or water-dilutable medium. Since these triazine compounds are colorless or only slightly colored, they do not influence the shade of the medium used.
    Type: Grant
    Filed: December 13, 1991
    Date of Patent: August 31, 1993
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Rainer Az, Wolfgang Schwab, Dieter Schnaitmann, Erwin Dietz