Patents by Inventor Ignazio Spadola

Ignazio Spadola 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 removing iron-and rhodium-containing catalyst residues from hydrogenated nitrile rubber
    Patent number: 6646059
    Abstract: A process is provided for the removal of iron- and rhodium-containing residues from a solution of hydrogenated nitrile rubber. The process utilizes an ion-exchange resin having thiourea functional groups. Further, the resin is both macroporour and monodispersed. The process removes both rhodium and iron from viscous rubber solutions. In a preferred embodiment, the process is carried out in an ion-exchange column.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: November 11, 2003
    Assignee: Bayer Inc.
    Inventors: Paul Nguyen, Harald Bender, Gilles Arsenault, Ignazio Spadola, Franz-Josef Mersmann
  • Process for removing iron-and rhodium-containing catalyst residues from hydrogenated nitrile rubber
    Publication number: 20020120071
    Abstract: A process is provided for the removal of iron- and rhodium-containing residues from a solution of hydrogenated nitrile rubber. The process utilizes an ion-exchange resin having thiourea functional groups. Further, the resin is both macroporour and monodispersed. The process removes both rhodium and iron from viscous rubber solutions. In a preferred embodiment, the process is carried out in an ion-exchange column.
    Type: Application
    Filed: November 2, 2001
    Publication date: August 29, 2002
    Inventors: Paul Nguyen, Harald Bender, Gilles Arsenault, Ignazio Spadola, Franz-Josef Mersmann