Patents by Inventor Peter Schuller

Peter Schuller 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).

  • Purification of tertiary amines using an adsorbent
    Patent number: 4255356
    Abstract: A method of purifying tertiary amines by removing sec. and prim. amines and/or their hydrochlorides produced in the manufacture of the tertiary amines. The impurities are removed by dissolving the impure tertiary amines in an organic solvent and the resulting solution is passed over absorbents such as aluminum oxides having a specific surface area of about 100 to 400 square meters per gram. The sec. and prim. amines and/or their hydrochlorides are retained on the adsorbents and pure tertiary amines are useful in the solvents or can be separated therefrom. The adsorbents are regenerated by passing polar solvents thereover to remove the sec. and prim. amines and/or their hydrochlorides.
    Type: Grant
    Filed: August 8, 1979
    Date of Patent: March 10, 1981
    Assignee: Chemische Werke Huls AG
    Inventors: Alfred Coenen, Kurt Kosswig, Ferdinand Von Praun, Hans-Peter Schuller