Patents Represented by Attorney, Agent or Law Firm Y. G. Tsang
  • Process for the purification of propylene oxide
    Patent number: 6462209
    Abstract: Process for improving the quality of a propylene oxide contaminated with poly(propylene oxide), which process comprises the steps of: (a) contacting the liquid propylene oxide with an adsorbent consisting of magnesium silicate and/or calcium silicate under such conditions that the amount of poly(propylene oxide) is reduced to the desired level, and (b) recovering the purified propylene oxide product.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: October 8, 2002
    Assignee: Shell Oil Company
    Inventors: Johannes Gerhardus Joseph Beckers, Johannes Jozias Blom