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Title:
COMPOSITE SEMIPERMEABLE MEMBRANE AND METHOD FOR PRODUCING COMPOSITE SEMIPERMEABLE MEMBRANE
Document Type and Number:
WIPO Patent Application WO/2024/048695
Kind Code:
A1
Abstract:
The present invention relates to a composite semipermeable membrane having a microporous support layer and a separation function layer that is provided on the microporous support layer, the separation function layer having a plurality of protrusions configured from a thin film containing a cross-linked aromatic polyamide, and x and y, which are measured through TEM-EELS, satisfying the relationship y/x ≥ 1.3. x: Average value of ratio of oxygen atoms (O) to nitrogen atoms (N) in the range of 2-25% of apparent height of protrusions. y: Average value of ratio of O to N in range of 75-98% of apparent height of protrusions.

Inventors:
OGAWA KUMIKO (JP)
MITSUI SHINYA (JP)
SHIMURA HARUTOKI (JP)
Application Number:
PCT/JP2023/031656
Publication Date:
March 07, 2024
Filing Date:
August 30, 2023
Export Citation:
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Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B01D71/56; B01D69/00; B01D69/12
Domestic Patent References:
WO2018003943A12018-01-04
Foreign References:
JPS6312310A1988-01-19
JP2016144794A2016-08-12
Attorney, Agent or Firm:
EIKOH, P.C. (JP)
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