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Title:
POROUS HOLLOW YARN COMPOSITE MEMBRANE AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP62071503
Kind Code:
A
Abstract:

PURPOSE: To obtain the titled porous hollow yarn composite membrane having high gas permeability and permselectivity and excellent resistance to heat and solvents and mechanical strength by depositing a plasma-polymerized membrane on the surface of a porous hollow yarn carrier membrane of poly(2,6- dimethylphenylene oxide).

CONSTITUTION: Poly(2,6-dimethylphenylene oxide) having a repeating unit shown by the formula is dissolved in a solvent such as N-methyl-2-pyrolidone while being heated and agitated. While the obtained soln. is kept at that temp., the soln. is extruded into a coagulation bath of water, etc., from a double-pipe nozzle, coagulated, then washed with water to extract the solvent and dried to obtain a porous hollow yarn carrier membrane. Then the carrier membrane is introduced into a reaction vessel under reduced pressure, glow discharge is generated while sending a polymerizable monomer such as methyltrivinylsilane, and a plasma-polymerized membrane is deposited on the carrier membrane to obtain a composite membrane.


Inventors:
Yamada, Katsuya
Asako, Shigeru
Okita, Koichi
Toyooka, Shinichi
Application Number:
JP1985000213188
Publication Date:
April 02, 1987
Filing Date:
September 25, 1985
Export Citation:
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Assignee:
SUMITOMO ELECTRIC IND LTD
International Classes:
D01F6/66; B01D53/22; B01D61/38; B01D69/08; B01D69/12; B01D71/52; C08J7/00; C08J7/04; C08J9/28; C08J9/34; D01F8/04; D01F8/16; D06M13/02; D06M13/51; D06M13/513; D06M14/30; D06M101/00; D06M101/16; D06M101/30; D01F6/58; B01D53/22; B01D61/38; B01D69/00; B01D71/00; C08J7/00; C08J9/00; D01F8/04; D06M13/00; D06M14/00; (IPC1-7): B01D13/00; B01D13/04; B01D53/22; C08J7/00; C08J7/04; C08J9/28; C08J9/36; D01F6/66; D01F8/04; D06M14/30