Patents by Inventor Pol Bamelis

Pol Bamelis 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 the preparation of polymer powders by spray drying
    Patent number: 4794167
    Abstract: A process for the preparation of polymer powders from polymer dispersions by feeding a polymer dispersion continuously into an atomization apparatus and separately therefrom but at the same time also introducing a liquid agent, the dispersion and the liquid agent being completely mixed within at the most one second and the mixture being immediately thereafter dried with evaporation of the volatile constituents to form a powder composed of particles having an average diameter of from 0.05 to 1 mm, and the polymer powders prepared by this process.
    Type: Grant
    Filed: November 27, 1987
    Date of Patent: December 27, 1988
    Assignee: Bayer Akteingesellschaft
    Inventors: Christian Lindner, Edwin Roth, Otto Koch, Hans-Eberhard Braese, Pol Bamelis
  • Processing of polymer dispersions by spray drying
    Patent number: 4774271
    Abstract: The invention relates to a process for the recovery of thermoplastic polymers from aqueous dispersions by spray-drying after treatment with carboxylic acid of formula I ##STR1## wherein X is a single bond, --CH.sub.2 -- or --C.sub.2 H.sub.
    Type: Grant
    Filed: February 9, 1987
    Date of Patent: September 27, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Christian Lindner, Pol Bamelis, Jurgen Hinz, Dieter Wittmann, Otto Koch, Burkhard Braun
  • Process for the work-up of the mother liquors from the preparation of benzothiazole compounds
    Patent number: 4762931
    Abstract: An improved work-up of aqueous mother liquors which originate from the oxidative preparation of benzothiazolylsulphenamides and which contain unreacted amine or a low-boiling alcohol employed as solubilizer, or both, the work-up being carried out in such a fashion that the mother liquor is saturated by additives until two phases form, the phases are separated from one another, the aqueous phase is extracted with further alcohol or amine, amine, alcohol and the extracted components are isolated from the combined organic phases, and amine or alcohol dissolved in the aqueous phase is removed therefrom by distillation.
    Type: Grant
    Filed: November 24, 1986
    Date of Patent: August 9, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gabriel Denecker, Domien Sluyts, Jean-Marie Biot, Tony van Osselaer, Jan de Roos, Pol Bamelis
  • Purification of cyclohexanone
    Patent number: 3933916
    Abstract: Object of the invention is a process for the purification of cyclohexanone which comprises removing impurities from the crude product by adding inorganic or organic acids or ion exchangers. The impurities are degraded and can now be readily separated off by distillation.
    Type: Grant
    Filed: September 13, 1973
    Date of Patent: January 20, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Pierre Lejeune, Jan Van Esbroeck, Pol Bamelis