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Membrane-forming dope for carbon membranes and a method for producing a carbon hollow fiber membrane using the same

  • US 10,150,085 B2
  • Filed: 10/09/2015
  • Issued: 12/11/2018
  • Est. Priority Date: 10/30/2014
  • Status: Active Grant
First Claim
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1. A membrane-forming dope for carbon membranes, comprising polyphenylene oxide in an amount giving a concentration of 15 to 40 wt. % in the membrane-forming dope, and sulfur in an amount giving a ratio of 0.1 to 5.0 wt. % of the total weight of the polyphenylene oxide and the sulfur, both of which are dissolved in a solvent that can dissolve these components.

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