Title:
FORWARD OSMOSIS MEMBRANE AND FORWARD OSMOSIS MEMBRANE MODULE INCLUDING SAME
Document Type and Number:
WIPO Patent Application WO/2023/276614
Kind Code:
A1
Abstract:
A forward osmosis membrane comprising a support membrane and an isolative function layer, wherein: the support membrane is equipped with at least a porous support body; the isolative function layer is provided on the porous support body; the porous support body is provided with a compact layer and a macrovoid layer in this order in the depth direction from the surface thereof which contacts the isolative function layer; the thickness of the compact layer is 1.0-9.5μm; there are 0-0.20 macrovoids/μm in a region A which extends to a depth of 0-5.0μm from the interface between the isolative function layer and the porous support body; and there are 0.04-0.40 macrovoids/μm in a region B which extends to a depth of 5.0-10.0μm from the interface between the isolative function layer and the porous support body.
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Inventors:
HOTTA DAISUKE (JP)
HASHIMOTO TOMOTAKA (JP)
HASHIMOTO TOMOTAKA (JP)
Application Number:
PCT/JP2022/023487
Publication Date:
January 05, 2023
Filing Date:
June 10, 2022
Export Citation:
Assignee:
ASAHI CHEMICAL IND (JP)
International Classes:
B01D61/00; B01D63/02; B01D69/00; B01D69/08; B01D69/10; B01D69/12; B01D71/68
Domestic Patent References:
| WO2017155034A1 | 2017-09-14 | |||
| WO2015041286A1 | 2015-03-26 | |||
| WO2020059769A1 | 2020-03-26 |
Foreign References:
| JP2018039003A | 2018-03-15 | |||
| JP2020054997A | 2020-04-09 | |||
| JP2003236351A | 2003-08-26 | |||
| JP2002143654A | 2002-05-21 | |||
| JP2018039003A | 2018-03-15 | |||
| JP2019093366A | 2019-06-20 | |||
| JP2011194272A | 2011-10-06 | |||
| JP2013022588A | 2013-02-04 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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