Patents by Inventor Harald Chmitz

Harald Chmitz 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 of Controlling the Relative Activity of the Different Active Centers of Hybrid Catalysts
    Publication number: 20100130708
    Abstract: Method of preparing olefin polymers, which comprises the polymerization of at least one ?-olefin in the presence of a hybrid catalyst to produce a polymer comprising at least a higher molecular weight polymer component and a lower molecular weight polymer component in the presence of water in an amount of from 2 to 100 mol ppm and/or carbon dioxide in an amount of from 2 to 100 mol ppm, in each case based on the total reaction mixture, in order to alter the ratio of the higher molecular weight polymer component to the lower molecular weight polymer component. This enables the ratio of the higher molecular weight component to the lower molecular weight component to be controlled selectively.
    Type: Application
    Filed: July 13, 2006
    Publication date: May 27, 2010
    Applicant: Basell Polyolefine GmbH
    Inventors: Shahram Mihan, Rainer Karer, Harald Chmitz, Dieter Lilge