Title:
COMPOSITE SEMIPERMEABLE MEMBRANE AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2023/234415
Kind Code:
A1
Abstract:
The present invention provides a composite semipermeable membrane comprising a porous support layer and a separation functional layer located on the porous support layer, the composite semipermeable membrane having a first surface that is a surface positioned on the separation functional layer side and a second surface that is a surface positioned on the opposite side to the first surface, in which the separation functional layer contains a crosslinked polyamide, and the amino group density measured with a scanning transmission electron microscope (STEM) in a cross section taken in the thickness direction of the separation functional layer satisfies the formula: Nb/Nd ≤ 0.40 (wherein Nb and Nd are defined in the description).
Inventors:
TANAKA HIROAKI (JP)
MINEHARA HIROKI (JP)
MARUO YUYA (JP)
MINEHARA HIROKI (JP)
MARUO YUYA (JP)
Application Number:
PCT/JP2023/020705
Publication Date:
December 07, 2023
Filing Date:
June 02, 2023
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B01D71/56; B01D69/00; B01D69/02; B01D69/10; B01D69/12
Foreign References:
| JP2017213500A | 2017-12-07 | |||
| JPS6312310A | 1988-01-19 | |||
| JP2020142178A | 2020-09-10 | |||
| JP2008229506A | 2008-10-02 |
Other References:
ANONYMOUS: "N,N-dimethylformamide", SAFETY DATA SHEET, 15 March 2019 (2019-03-15), XP093116805, Retrieved from the Internet
ANONYMOUS: "N,N-dimethylacetamide", 15 March 2019 (2019-03-15), XP093116807, Retrieved from the Internet
ANONYMOUS: "N,N-dimethylacetamide", 15 March 2019 (2019-03-15), XP093116807, Retrieved from the Internet
Attorney, Agent or Firm:
EIKOH, P.C. (JP)
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