Title:
SEPARATION MEMBRANE ELEMENT AND METHOD FOR PRODUCING COMPOSITE SEMIPERMEABLE MEMBRANE
Document Type and Number:
WIPO Patent Application WO/2012/020680
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a separation membrane element which has high boron removal performance and high water permeation performance, while being reduced in elution. Specifically provided is a separation membrane element which comprises a polyamide separation function layer on a microporous supporting body that is composed of a base and a porous supporting layer. The degree of yellowing of the polyamide separation function layer is 10-40 (inclusive), and the concentration of material eluted from the base is 1.0 × 10-3% by weight or less.
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Inventors:
OGAWA TAKAFUMI
KIMURA MASAHIRO
SASAKI TAKAO
KIMURA MASAHIRO
SASAKI TAKAO
Application Number:
PCT/JP2011/067772
Publication Date:
February 16, 2012
Filing Date:
August 03, 2011
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
OGAWA TAKAFUMI
KIMURA MASAHIRO
SASAKI TAKAO
OGAWA TAKAFUMI
KIMURA MASAHIRO
SASAKI TAKAO
International Classes:
B01D71/56; B01D69/10; B01D69/12
Foreign References:
| JP2009255075A | 2009-11-05 | |||
| JP2009011913A | 2009-01-22 | |||
| JPH1119493A | 1999-01-26 | |||
| JP2001259388A | 2001-09-25 | |||
| JP2007090192A | 2007-04-12 | |||
| JP2006122886A | 2006-05-18 | |||
| JPH0278428A | 1990-03-19 |
Other References:
JOURNAL OF POLYMER SCIENCE, vol. 26, 1988, pages 559 - 572
NIHON SETCHAKU GAKKAI-SHI, vol. 27, no. 4, 1991
OFFICE OF SALINE WATER RESEARCH AND DEVELOPMENT PROGRESS REPORT, 1968
See also references of EP 2604333A4
NIHON SETCHAKU GAKKAI-SHI, vol. 27, no. 4, 1991
OFFICE OF SALINE WATER RESEARCH AND DEVELOPMENT PROGRESS REPORT, 1968
See also references of EP 2604333A4
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Claims: