Patents by Inventor Dieter Wolfgang Lange

Dieter Wolfgang Lange 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).

  • Process For Preparing Polysulfides, Polysulfides, And Their Use
    Publication number: 20090012260
    Abstract: The invention relates to a process for preparing a polysulfide comprising the step of reacting a first hydroxyl-terminated polysulfide of formula (I) wherein n is 2 to 40, with at least one compound selected from the group consisting of a second hydroxyl-terminated polysulfide which is in accordance with formula (I), a hydroxyl- and/or thiol-containing molecule, and a phosphorous sulfide to obtain a third hydroxyl-terminated polysulfide, wherein the reaction is carried out in the presence of an acid catalyst if the compound is the second hydroxyl-terminated polysulfide or the hydroxyl- and/or thiol- containing molecule, and if the compound is the phosphorous sulfide, the reaction is optionally carried out in the presence of an acid catalyst.
    Type: Application
    Filed: March 2, 2007
    Publication date: January 8, 2009
    Applicant: AKZO NOBEL N.V.
    Inventors: Eike Nicolas Kantzer, Olaf Klobes, Dieter Wolfgang Lange