COMPOSITE SEMIPERMEABLE MEMBRANE

The present invention relates to a composite semipermeable membrane that is provided with a supporting film and a separation function layer disposed on the supporting film. The separation function layer contains a thin film, and this thin film forms a pleated structure having a plurality of protrusi...

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Bibliographic Details
Main Authors TABAYASHI, Shunsuke, SASAKI, Takao, YOSHINO, Takashi, OKANISHI, Ryosuke, HIGASHI, Masaki, MINEHARA, Hiroki, AMANO, Yuta
Format Patent
LanguageEnglish
French
German
Published 02.10.2024
Subjects
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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Summary:The present invention relates to a composite semipermeable membrane that is provided with a supporting film and a separation function layer disposed on the supporting film. The separation function layer contains a thin film, and this thin film forms a pleated structure having a plurality of protrusions. The actual length L of the thin film, per 1 µm of length of the supporting film, in the cross-sectional direction of the direction perpendicular to the membrane surface, is at least 3.0 µm, and the thickness of the thin film in the protrusions is at least 15 nm.
Bibliography:Application Number: EP20220791834