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Patent Searching and Data


Title:
HOLLOW FIBER MEMBRANE AND HOLLOW FIBER MEMBRANE MODULE
Document Type and Number:
WIPO Patent Application WO/2020/084930
Kind Code:
A1
Abstract:
A hollow fiber membrane according to one embodiment of the present invention is mainly made of polytetrafluoroethylene or modified polytetrafluoroethylene and has an average outer diameter of 1 mm or less and an average inner diameter of 0.5 mm or less. When the polytetrafluoroethylene or the modified polytetrafluoroethylene is measured for heat of fusion with a differential scanning calorimeter through a first step of heating from room temperature to 365°C, a second step of cooling from 365°C to 350°C, maintaining the temperature, and then cooling from 350°C to 330°C and then from 330°C to 305°C, and a third step of cooling from 305°C to 245°C at -50°C/min and then heating from 245°C to 365°C at 10°C/min, the heat of fusion from 296°C to 343°C in the third step is 30.0 J/g to 45.0 J/g.

Inventors:
HAYASHI FUMIHIRO (JP)
MUROYA YASUHIKO (JP)
HASHIMOTO TAKAMASA (JP)
UNO ATSUSHI (JP)
SUZUKI YOSHIMASA (JP)
Application Number:
PCT/JP2019/035172
Publication Date:
April 30, 2020
Filing Date:
September 06, 2019
Export Citation:
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Assignee:
SUMITOMO ELECTRIC FINE POLYMER INC (JP)
International Classes:
B01D71/36; B01D19/00; B01D61/00; B01D63/02; B01D69/02; B01D69/08; C08J9/00; D01F6/12
Foreign References:
JP2010094579A2010-04-30
JP2007077323A2007-03-29
Attorney, Agent or Firm:
MORITA Takeshi et al. (JP)
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