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US 11,446,611 B2Granted
Separating membrane and method for manufacturing separating membrane
AssigneeToray Industries, Inc.
InventorsKoichi Takada, Gohei Yamamura, Hiroki Eimura
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Abstract
The present invention addresses the problem of providing a separating membrane mainly comprising a thermoplastic resin having high permeability. The present invention relates to a separating membrane including a thermoplastic resin, wherein the width of voids in the separating membrane is at least equal to 1 nm and at most equal to 1000 nm, and the curvature rate of the voids is at least equal to 1.0 and at most equal to 6.0.
Claims2
A separation membrane having a shape of a hollow fiber and comprising polyamides as a main component, wherein
- the separation membrane has voids therein which have a width of 1 nm-31 nm, wherein the voids have a tortuosity of 1.0-6.0, and
- which has a membrane permeation flux at 50 kPa and 25° C. of 0.81 m3/m2/h-15 m3/m2/h,
- which comprises a co-continuous structure that comprises a phase comprising the polyamides and the voids, and
- which has a thickness of 1 μm to 43 μm and an outer diameter of 50 μm to 220 μm.
1 more element
Dependencies are inferred from the claim text.