Patents Examined by Luig Sui Choi
  • Catalyst deactivation
    Patent number: 6180730
    Abstract: A particulate deactivator is used to pacify halogen-containing catalyst residues from a medium pressure solution polymerization process. The deactivator is added post-reactor preferably in the form of a suspension. The particulate deactivator may also be used in conjunction with a secondary, soluble deactivator.
    Type: Grant
    Filed: December 12, 1998
    Date of Patent: January 30, 2001
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: Fazle Sibtain, Antonio Pietro Nicola, Stephen John Brown, Linda Jean Santry