ASYMMETRIC GAS SEPARATING MEMBRANE AND METHOD FOR SEPARATING METHANOL FROM MIXED ORGANIC VAPOR USING SAME

Title:

ASYMMETRIC GAS SEPARATING MEMBRANE AND METHOD FOR SEPARATING METHANOL FROM MIXED ORGANIC VAPOR USING SAME

Document Type and Number:

WIPO Patent Application WO/2012/077810

Kind Code:

A1

Abstract:

Provided are an asymmetric gas separating membrane configured from an aromatic polyimide containing repeating units primarily having ether bonds and heat-treated at a temperature near the softening point (TS) of the aromatic polyimide, and a method using same for separating methanol from a methanol-containing mixed organic vapor by passing the methanol selectively through the asymmetric gas separating membrane.

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Inventors:

TAKADA RYOICHI (JP)
HOSHINO HARUTOSHI (JP)
KANOUGI TOMONORI (JP)
YOSHINAGA TOSHIMUNE (JP)
FUKUNAGA KENJI (JP)

Application Number:

PCT/JP2011/078621

Publication Date:

June 14, 2012

Filing Date:

December 09, 2011

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Assignee:

UBE INDUSTRIES (JP)
TAKADA RYOICHI (JP)
HOSHINO HARUTOSHI (JP)
KANOUGI TOMONORI (JP)
YOSHINAGA TOSHIMUNE (JP)
FUKUNAGA KENJI (JP)

International Classes:

B01D53/22; B01D69/08; B01D71/64; C08G73/10; C08J9/04

Foreign References:

JPH0416213A	1992-01-21
JPS63175115A	1988-07-19
JP2004267810A	2004-09-30

Attorney, Agent or Firm:

ITO, Katsuhiro et al. (JP)
Katsuhiro Ito (JP)

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Claims:

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