Patents Assigned to Chevrton Phillips Chemical Company LP
  • System and method for catalyst activation
    Patent number: 8372771
    Abstract: A system and method for activating chromium catalyst, including: increasing temperature of a chromium catalyst at a first rate for a first period of time to a first temperature; and increasing temperature of the chromium catalyst at a second rate for a second period of time from the first temperature to a second temperature, wherein the first rate is greater than the second rate, and wherein the first period precedes the second period.
    Type: Grant
    Filed: February 16, 2010
    Date of Patent: February 12, 2013
    Assignee: Chevrton Phillips Chemical Company LP
    Inventors: Elizabeth A. Benham, Max P. McDaniel