Patents by Inventor Christopher Kuell

Christopher Kuell 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 synthesis of N-(hydroxyalkoxy) substituted hindered amine stabilizers
    Patent number: 6166212
    Abstract: N-(Hydroxyalkoxy) hindered amine stabilizers are prepared by reacting the corresponding N-oxyl compound with a peroxide or organic hydroperoxide and a catalytic amount of a metal salt or metal-ligand complex in an alcohol solvent. These N-(hydroxyalkoxy) hindered amines are particularly useful as stabilizers for polyolefins, thermoplastic polyolefins and automotive coating compositions.
    Type: Grant
    Filed: May 20, 1999
    Date of Patent: December 26, 2000
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: James P. Galbo, Robert E. Detlefsen, Michael P. DiFazio, Henry C. Grace, Christopher Kuell