Patents by Inventor Klaus Kaschub

Klaus Kaschub 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).

  • Patent number: 4775488
    Abstract: An agent effective for oleophobizing and hydrophobizing textiles is an aqueous anionic dispersion which comprises water and(A) 5 to 25% by weight of a reaction product which contains at least one bis-(2-fluoroalkyl-ethoxy-carbonylamino)-toluene of the formula ##STR1## wherein n is a number from 5 to 15 and Y is --H or --F, and wherein said reaction product is prepared by reacting 2-perfluoroalkylethanol of the formulaYCF.sub.2 --(CF.sub.2).sub.n --CH.sub.2 CH.sub.2 OHwith tolylene diisocyanate in a molar ratio of (1.8 to 2):1 in the presence of 2 to 5% by weight of N-methylpyrrolidone, relative to the perfluoroalkylethanol,(B) 1 to 14% by weight of at least one emulsifier of the formulaYCF.sub.2 (CF.sub.2).sub.p --CH.sub.2 CH.sub.2 O--CO--NH--CH.sub.2 CH.sub.2 --SSO.sub.3 Xwherein p is a number from 5 to 15, Y is --H or --F, and X is a monovalent cation,(C) 1 to 14% by weight of at least one nonionic emulsifier of the formulaYCF.sub.2 --(CF.sub.2).sub.q --CH.sub.2 CH.sub.2 --(OCH.sub.2 CH.sub.2).sub.
    Type: Grant
    Filed: April 11, 1986
    Date of Patent: October 4, 1988
    Assignee: Cassella Aktiengesellschaft
    Inventors: Karl Hintermeier, Heinrich Bathelt, Frank Wehowsky, Hans Wagener, Manfred Seidel, Manfred Muller, Klaus Kaschub