Patents by Inventor Nicholas Kokel

Nicholas Kokel 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).

  • Aqueous polyurethane dispersions containing structural units derived from alkenyl- or alkylsuccinic acid
    Patent number: 5852104
    Abstract: Aqueous dispersions containing a polyurethane built up froma) diisocyanates having 4 to 30 carbon atoms,b) diols, of whichb.1) from 10 to 100 mol %, based on the total amount of the diols (b), have a molecular weight of from 500 to 5000 and are built up fromb1.1) (C.sub.4 - to C.sub.30 -alkyl)succinic acid and/or (C.sub.4 - to C.sub.30 -alkenyl)succinic acid,b1.2) from 0 to 60 mol %, based on component (b1.1), of a dicarboxylic acid which is different from component (b1.1), andb1.3) a diol having a molecular weight of from 60 to 500 g/mol,b.2) from 0 to 90 mol %, based on the total amount of the diols (b), have a molecular weight of from 60 to 500 g/mol, andb.
    Type: Grant
    Filed: January 27, 1997
    Date of Patent: December 22, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Nicholas Kokel, Karl Haberle, Kuno Beutler, Jurgen Reichert, Peter Weyland, Gabriele Dralle-Voss, Knut Oppenlander, Michael Zirnstein, Gerlinde Tischer, Bernd Guettes, Ulrike Licht