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Title:
COMPOSITE SEMIPERMEABLE MEMBRANE AND COMPOSITE SEMIPERMEABLE MEMBRANE ELEMENT
Document Type and Number:
WIPO Patent Application WO/2019/168137
Kind Code:
A1
Abstract:
By having a coating layer, this composite semipermeable membrane has fouling resistance easily maintainable before and after contact with acid, and enables stable operation over a long period of time. This composite semipermeable membrane comprises a porous support layer, a separation function layer arranged on the porous support layer, and a coating layer arranged on the separation function layer, wherein the separation function layer contains a crosslinked aromatic polyamide which is a polycondensate of polyfunctional aromatic amines and polyfunctional aromatic acid chloride, and the coating layer contains an aliphatic polymer having the structure (I) in the description.

Inventors:
SHIMURA HARUTOKI (JP)
NISHIGUCHI YOSHIKI (JP)
ADACHI YOHEI (JP)
TOKUYAMA TAKAHIRO (JP)
KURAOKA KOHEI (JP)
Application Number:
PCT/JP2019/007965
Publication Date:
September 06, 2019
Filing Date:
February 28, 2019
Export Citation:
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Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B01D71/56; B01D63/10; B01D69/02; B01D69/10; B01D69/12; B32B5/18; B32B27/34; C08G69/32
Domestic Patent References:
WO2018003943A12018-01-04
WO2014133133A12014-09-04
WO1997034686A11997-09-25
Foreign References:
JP2010240651A2010-10-28
JP2013534464A2013-09-05
JP2001079372A2001-03-27
JP2003501249A2003-01-14
JP2015516876A2015-06-18
JPH0278428A1990-03-19
JP2018034858A2018-03-08
JP2018034859A2018-03-08
Other References:
OFFICE OF SALINE WATER RESEARCH AND DEVELOPMENT PROGRESS REPORT, 1968
See also references of EP 3760302A4
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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