Title:
FILM-FORMING STOCK SOLUTION FOR USE IN NON-SOLVENT-INDUCED PHASE SEPARATION METHODS, AND METHOD FOR PRODUCING POROUS HOLLOW FIBER MEMBRANE USING SAME
Document Type and Number:
WIPO Patent Application WO/2017/043233
Kind Code:
A1
Abstract:
A film-forming stock solution for use in non-solvent-induced phase separation methods, in which 15 to 40% by weight of a polysulfone-type resin, 5 to 60% by weight of polyvinyl pyrrolidone and 0.1 to 10% by weight of a polyoxyethylene sorbitan fatty acid ester are dissolved in a water-soluble organic solvent solution. A fiber is spun by a non-solvent-induced phase separation method using the film-forming stock solution and using an aqueous solution as a core solution, thereby producing a porous hollow fiber membrane. The high-performance porous hollow fiber membrane thus produced is not greatly deteriorated in water vapor permeation performance even after being used under a high-temperature environment having a temperature of, for example, 100 to 120ºC, and therefore can be used suitably as a water vapor-permeable membrane for fuel cells.
Inventors:
SATO TAKATOSHI (JP)
WATANABE KENSUKE (JP)
WATANABE KENSUKE (JP)
Application Number:
PCT/JP2016/073134
Publication Date:
March 16, 2017
Filing Date:
August 05, 2016
Export Citation:
Assignee:
NOK CORP (JP)
International Classes:
B01D71/68; B01D69/08; B01D71/44; C08J9/28; C08K5/103; C08L39/06; C08L81/06; H01M8/04
Domestic Patent References:
| WO2008111510A1 | 2008-09-18 |
Foreign References:
| JPH04241112A | 1992-08-28 | |||
| JP2006255502A | 2006-09-28 | |||
| JPH05148383A | 1993-06-15 | |||
| JPS61107909A | 1986-05-26 | |||
| JPS6064602A | 1985-04-13 |
Other References:
See also references of EP 3348323A4
Attorney, Agent or Firm:
YOSHIDA Toshio et al. (JP)
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