Patents by Inventor Gregory Hedden

Gregory Hedden 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 for preparation of platinum-carbonyl-siloxane compounds
    Patent number: 9040731
    Abstract: The invention relates to a method for preparation of platinum siloxane compounds containing at least one CO ligand molecule (Pt carbonyl siloxanes). The method comprises reacting gaseous carbon monoxide (CO) with a platinum siloxane compound, preferably a platinum vinyl-cyclosiloxane compound, in solution with an organic solvent. The method is straightforward and applicable to industrial scale. With this method, specific isomers of platinum carbonyl vinylcyclosiloxanes are prepared, in which the two ?-2-ethenyl groups coordinated to the Pt atom are bonded in trans-configuration relative to the cyclosiloxane backbone. The Pt compounds obtained by the method are used as catalysts for hydrosilylation and for crosslinking and curing of siloxanes and silanes.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: May 26, 2015
    Assignee: Umicore AG & Co. KG
    Inventors: Gregory Hedden, Eric L. Frueh, Wayne J. Gallagher
  • METHOD FOR PREPARATION OF PLATINUM-CARBONYL-SILOXANE COMPOUNDS
    Publication number: 20140249281
    Abstract: The invention relates to a method for preparation of platinum siloxane compounds containing at least one CO ligand molecule (Pt carbonyl siloxanes). The method comprises reacting gaseous carbon monoxide (CO) with a platinum siloxane compound, preferably a platinum vinyl-cyclosiloxane compound, in solution with an organic solvent. The method is straightforward and applicable to industrial scale. With this method, specific isomers of platinum carbonyl vinylcyclosiloxanes are prepared, in which the two ?-2-ethenyl groups coordinated to the Pt atom are bonded in trans-configuration relative to the cyclosiloxane backbone. The Pt compounds obtained by the method are used as catalysts for hydrosilylation and for crosslinking and curing of siloxanes and silanes.
    Type: Application
    Filed: July 31, 2012
    Publication date: September 4, 2014
    Applicant: UMICORE AG & CO. KG
    Inventors: Gregory Hedden, Eric L. Frueh, Wayne J. Gallagher