Title:
COMPOSITE SEMIPERMEABLE MEMBRANE AND COMPOSITE SEMIPERMEABLE MEMBRANE ELEMENT
Document Type and Number:
WIPO Patent Application WO/2019/168138
Kind Code:
A1
Abstract:
A novel membrane is provided in which the permeate flow rate is not prone to decrease even when the membrane is used to process seawater with high salt concentration and high heavy metal ion concentration. This composite semipermeable membrane comprises a porous support layer, a separation function layer arranged on the porous support layer, and a coating layer coating the separation function layer, wherein the separation function layer contains a crosslinked polymer amide which is a condensate of polyfunctional aromatic amine and polyfunctional aromatic acid chloride, and the coating layer contains an aliphatic polymer including a polyether moiety and a carbonic acid polymer moiety.
Inventors:
SHIMURA HARUTOKI (JP)
TOKUYAMA TAKAHIRO (JP)
NISHIGUCHI YOSHIKI (JP)
ADACHI YOHEI (JP)
KURAOKA KOHEI (JP)
TOKUYAMA TAKAHIRO (JP)
NISHIGUCHI YOSHIKI (JP)
ADACHI YOHEI (JP)
KURAOKA KOHEI (JP)
Application Number:
PCT/JP2019/007966
Publication Date:
September 06, 2019
Filing Date:
February 28, 2019
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B01D71/56; B01D69/00; B01D69/10; B01D69/12; B01D71/52; B32B5/18; B32B27/34; C08G69/12
Domestic Patent References:
| WO2015046582A1 | 2015-04-02 | |||
| WO2018003943A1 | 2018-01-04 | |||
| WO1997034686A1 | 1997-09-25 |
Foreign References:
| JP2012510893A | 2012-05-17 | |||
| JP2001327840A | 2001-11-27 | |||
| JP2001079372A | 2001-03-27 | |||
| JP2003501249A | 2003-01-14 | |||
| JP2015516876A | 2015-06-18 | |||
| JPH0278428A | 1990-03-19 | |||
| JP2018034860A | 2018-03-08 | |||
| JP2018034861A | 2018-03-08 |
Other References:
See also references of EP 3760303A4
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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