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Title:
SPIRAL-TYPE SEPARATION MEMBRANE ELEMENT
Document Type and Number:
WIPO Patent Application WO/2015/118913
Kind Code:
A1
Abstract:
 The objective of the present invention is to provide a spiral-type separation membrane element having superior oxidant resistance relative to the prior art, and a salt rejection rate that tends not to decrease. This spiral-type separation membrane element is characterized in including: a supply-side flow-path material; a composite semipermeable membrane in which a skin layer is formed on the surface of a porous support body, the skin layer containing a polyamide resin obtained by interfacial polymerization of a polyfunctional amine component and a polyfunctional acid halogen component; and a permeation-side flow-path material; the polyfunctional amine component containing N,N'-dimethyl meta-phenylenediamine; and the permeation-side flow-path material having a porosity of 40-75%.

Inventors:
NISHIYAMA SHINYA (JP)
NAKANO JUNKO (JP)
INOUE SHINICHI (JP)
Application Number:
PCT/JP2015/050731
Publication Date:
August 13, 2015
Filing Date:
January 14, 2015
Export Citation:
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Assignee:
NITTO DENKO CORP (JP)
International Classes:
B01D63/10; B01D63/00; B01D69/12; B01D71/56; B32B5/18; B32B5/24; C08G69/26
Foreign References:
JP2010201303A2010-09-16
JP2012024756A2012-02-09
JPH08500279A1996-01-16
JP2003275545A2003-09-30
JP2010131483A2010-06-17
JP2013000674A2013-01-07
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (JP)
Patent business corporation ユニアス international patent firm (JP)
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