Patents Assigned to Huntsman Petrochemical Company
  • Purification of solvents used for the purification of alkylene oxide
    Publication number: 20040211658
    Abstract: This invention concerns a process for removing carbonyl-containing impurities from impure extractive distillation solvent such as a glycol, comprising: contacting the impure extractive distillation solvent with an acidic ion exchange resin. The purified extractive distillation solvent can be recycled for use as a solvent in an extractive distillation process that removes impurities from alkylene oxide. The extractive distillation solvent can be ethylene glycol monomethyl ether (EGME) used to purify propylene oxide.
    Type: Application
    Filed: April 23, 2003
    Publication date: October 28, 2004
    Applicant: Huntsman Petrochemical Company
    Inventors: John R. Sanderson, Mark Mueller, James P. Farone