Patents by Inventor Hartmut K. Stiller

Hartmut K. Stiller 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).

  • Method for shortstopping polymerization processes in the manufacture of synthetic rubbers
    Publication number: 20040019165
    Abstract: This invention is related to a new shortstopping combination for use in stopping free radical and redox intiated polymerization is the combination of hydroxylamine (free base) (HA) and i-propylhydroxylamine (IPAH). It is more effective as related N-alcylated-hydroxylamines with regard to mooney stability. The combination is not corrosive to metals used in commercial equipment fr emulsion polymerization and prevents the rust formation and the formation of nitrosamins, coagulate and precipitate.
    Type: Application
    Filed: August 14, 2003
    Publication date: January 29, 2004
    Inventors: Hartmut K. Stiller, Hans A. R. Edel, Doris R. Marx, Heinz-Juergen Bogen, Ilona Guth, Klaus Hoehne, Wolfgang Krebes, Friedhelm Mathies