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CROSSLINKED POLYIMIDE MEMBRANE, METHOD FOR MAKING THE SAME USING ORGANIC TITANATE CATALYSTS TO FACILITATE CROSSLINKING AND METHOD OF USING THE MEMBRANE FOR FLUID SEPARATION

  • US 20090165645A1
  • Filed: 12/31/2007
  • Published: 07/02/2009
  • Est. Priority Date: 12/31/2007
  • Status: Active Grant
First Claim
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1. A method of making a crosslinked polyimide membrane, comprising:

  • (a) forming a monoesterified membrane from a monoesterified polyimide polymer, and(b) subjecting the monoesterified membrane to transesterification conditions to form a crosslinked fiber membrane;

    wherein the forming of the monoesterified membrane includes incorporating an organic titanate catalyst into the monoesterified membrane.

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