Patents Represented by Attorney, Agent or Law Firm Michael A. Crowell
  • Process for producing polypropylene from C3 olefins selectively produced in a fluid catalytic cracking process
    Patent number: 6339180
    Abstract: A process for producing polypropylene from olefins selectively produced from a catalytically cracked or thermally cracked naphtha stream is disclosed herein. The naphtha stream is contacted with a catalyst containing from about 10 to 50 wt. % of a crystalline zeolite having an average pore diameter less than about 0.7 nanometers at reaction conditions which include temperatures from about 500° C. to 650° C. and a hydrocarbon partial pressure from about 10 to 40 psia.
    Type: Grant
    Filed: March 2, 2000
    Date of Patent: January 15, 2002
    Assignee: ExxonMobil Chemical Patents, Inc.
    Inventors: Paul K. Ladwig, John E. Asplin, Gordon F. Stuntz, William A. Wachter, B. Erik Henry