Patents by Inventor Hans J{umlaut over (u)}rgen Scholz

Hans J{umlaut over (u)}rgen Scholz 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).

  • Use of N-(3-dialkylamino) propyl-N-polyhydroxyalkylcarboxamides and their acid adducts as thickeners for liquid aqueous surfactant systems
    Patent number: 6180591
    Abstract: The invention relates to the use of compounds of the formula 1 as thickeners for liquid, aqueous surfactant systems where R is an aliphatic radical having from 8 to 24 carbon atoms, R1 and R2, which are identical or different, are alkyl groups having from 1 to 4 carbon atoms or hydroxyalkyl groups having from 2 to 4 carbon atoms, and Z is a linear polyhydroxyhydrocarbon radical having at least 3 OH groups, which may also be alkoxylated, and also their acid addition products. The thickeners are used in industrial and standard household surfactant compositions.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: January 30, 2001
    Assignee: Clariant GmbH
    Inventors: Angelika Turowski-Wanke, Matthias Löffler, Hans J{umlaut over (u)}rgen Scholz, Werner Skrypzak, Bernd Papenfuhs