COMPOSITE SEMIPERMEABLE MEMBRANE

COMPOSITE SEMIPERMEABLE MEMBRANE

The present invention relates to a composite semipermeable membrane comprising a supporting film and a separation function layer provided on the supporting film, wherein the separation function layer has a plurality of protrusions formed in a thin film, and in any 10 cross-sections of at least one p...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: TABAYASHI, Shunsuke, SASAKI, Takao, YOSHINO, Takashi, OKANISHI, Ryosuke, HIGASHI, Masaki, MINEHARA, Hiroki, AMANO, Yuta
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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Beschreibung
Zusammenfassung:The present invention relates to a composite semipermeable membrane comprising a supporting film and a separation function layer provided on the supporting film, wherein the separation function layer has a plurality of protrusions formed in a thin film, and in any 10 cross-sections of at least one part of the plurality of protrusions, the cross-sections being 2.0 µm long in the film surface direction of the supporting film, the ratio (Wa/Wb) of the maximum width Wa of the protrusions to the root width Wb of the protrusions is greater than 1.3.