Title:
複合半透膜および複合半透膜エレメント
Document Type and Number:
Japanese Patent JP7255478
Kind Code:
B2
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:
Haruki Shimura
Tokuyama Takahiro
Yoshiki Nishiguchi
Yohei Adachi
Kohei Kuraoka
Tokuyama Takahiro
Yoshiki Nishiguchi
Yohei Adachi
Kohei Kuraoka
Application Number:
JP2019513478A
Publication Date:
April 11, 2023
Filing Date:
February 28, 2019
Export Citation:
Assignee:
TORAY INDUSTRIES,INC.
International Classes:
B01D71/56; B01D69/00; B01D69/10; B01D69/12; B01D71/40; B01D71/52; B32B5/02; C08G69/26; C08G81/02
Domestic Patent References:
| JP2012510893A | ||||
| JP2001327840A |
Foreign References:
| WO2015046582A1 | ||||
| WO2018003943A1 |
Attorney, Agent or Firm:
Patent Attorney Corporation Eiko Office