Title:
PERVAPORATION MEMBRANE
Document Type and Number:
WIPO Patent Application WO/2024/070573
Kind Code:
A1
Abstract:
The present invention provides a pervaporation membrane suitable for long-term operation of separating a volatile organic compound from an aqueous solution containing the organic compound. A pervaporation membrane 10A according to the present invention comprises a separation function layer 1 containing a silicone resin. The ratio R of a value obtained by subtracting a Young's modulus A1 (MPa) of the separation function layer 1 before conducting the following test from a Young's modulus A2 (MPa) of the separation function layer 1 after the test is conducted, with respect to the Young's modulus A1, is equal to or more than -30%. Test: The separation function layer 1 is immersed in a liquid mixture L formed of n-butanol and water for three weeks. The separation function layer 1 is removed from the liquid mixture L and is dried. Here, the n-butanol content of the liquid mixture L is 1.0 wt%, and the temperature of the liquid mixture L is 80°C.
Inventors:
YANO HIKARU (JP)
NAKANO TAKESHI (JP)
OGAWA TOMOYA (JP)
NAKANO TAKESHI (JP)
OGAWA TOMOYA (JP)
Application Number:
PCT/JP2023/032764
Publication Date:
April 04, 2024
Filing Date:
September 07, 2023
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
B01D65/10; B01D69/02; B01D69/12; B01D71/02; B01D71/70
Foreign References:
| JPH0445829A | 1992-02-14 | |||
| JP2018053229A | 2018-04-05 | |||
| JP2006291078A | 2006-10-26 | |||
| JPS63116705A | 1988-05-21 | |||
| JPS57136905A | 1982-08-24 | |||
| JP2011183378A | 2011-09-22 |
Attorney, Agent or Firm:
KAMADA Koichi et al. (JP)
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