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 OKANISHI Ryosuke, HIGASHI Masaki, YOSHINO Takashi, MINEHARA Hiroki, TABAYASHI Shunsuke, AMANO Yuta, SASAKI Takao
Format Patent
LanguageEnglish
French
Japanese
Published 27.10.2022
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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. La présente invention concerne une membrane semi-perméable composite dotée d'un film de support et d'une couche à fonction de séparation placée sur le film de support. La couche à fonction de séparation contient un film mince, ce film mince formant une structure plissée ayant une pluralité de saillies. La longueur réelle L du film mince, pour 1 µm de longueur du film de support, dans la direction transversale de la direction perpendiculaire à la surface de membrane, est d'au moins 3,0 µm, et l'épaisseur du film mince dans les saillies est d'au moins 15 nm. 本発明は、支持膜と、前記支持膜上に設けられた分離機能層とを備える複合半透膜であって、前記分離機能層は薄膜を含み、前記薄膜は、複数の突起を含むひだ構造を形成し、膜面に垂直な方向の断面方向における前記支持膜1μm長さあたりの前記薄膜の実長さLが3.0μm以上であり、前記突起における薄膜の厚みが15nm以上である複合半透膜に関する。
Bibliography:Application Number: WO2022JP18640