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US 2021/0197138 A1Published application
Composite semipermeable membrane
AssigneeNitto Denko Corporation
InventorsNagahisa SATO, Masashi ECHIZEN, Yasuyuki SAKAKIBARA
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Abstract
The present invention relates to a composite semipermeable membrane including: a porous layer; a membrane separation layer provided on the porous layer; and the porous layer contains a polymer, the polymer containing one of either a fluoropolymer or an imide group-containing polymer, wherein a compression ratio of a portion including the porous layer and the membrane separation layer when subjected to a pressure of 5.5 MPa is 60% or less.
Claims11
A composite semipermeable membrane comprising:
- a porous layer;
- a membrane separation layer provided on the porous layer;
- and
- the porous layer contains a polymer, the
- polymer containing one of either a fluoropolymer or an imide group-containing polymer,
- wherein a compression ratio of a portion including the porous layer and the membrane separation layer when subjected to a pressure of 5.5 MPa is 60% or less.
3 more elements
Dependencies are inferred from the claim text.