Patents by Inventor Gunter Prominski

Gunter Prominski 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: 4115530
    Abstract: Process for the production of gaseous hydrogen chloride by extraction of dilute aqueous hydrochloric acid with amines.(a) The aqueous hydrochloric acid is extracted with an amine or with a mixture of an amine and an inert organic solvent which is immiscible with water and has a lower boiling point than the amine employed, the amines utilized being tertiary alkyl amines, tertiary aryl dialkyl amines, secondary arylalkyl amines, primary alkylaryl amines, or mixtures thereof, which contain 14-32 carbon atoms in the nitrogen-bound side chains, and among these at most one nitrogen-bound methyl group and at least one aliphatic residue containing at least 6 carbon atoms, and wherein the acid constant K.sub.a of the amine is smaller than 10.sup.-3.(b) An inert, water-immiscible organic solvent which has a lower boiling point than the amine employed is added to the extract, unless the solvent has already been added in stage (a).
    Type: Grant
    Filed: July 14, 1977
    Date of Patent: September 19, 1978
    Assignee: Chemische Werke Huls AG
    Inventors: Alfred Coenen, Kurt Kosswig, Gunter Prominski