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US 9,314,736 B2Granted
Separation composite membrane and separating membrane module using the same
AssigneeFUJIFILM Corporation
InventorShigehide Itou
Life of this patent
Estimating the term…
Abstract
A separation composite membrane including: a separating layer for separating fluid components, the separating layer being constituted of a polymer having cross-linked structure, and a porous layer for supporting the separating layer, the porous layer having a maximum pore diameter of 0.05 to 0.5 μm, the separating layer being partly impregnated into the porous layer in the range of 0.1 to 30% in terms of the impregnation amount ratio (ηa) defined by Formula (A): [impregnation amount ratio (ηa){%}=impregnation depth (s)/(membrane thickness (t1) of separating layer)×100] (A).
Claims7
A separation composite membrane comprising:
- a separating layer for separating fluid components, the separating layer being constituted of polyimide resin having a cross-linked structure, and
- a porous layer for supporting the separating layer, the porous layer having a maximum pore diameter of 0.05 to 0.5 μm, and the porous layer being constituted of at least a resin selected from the group consisting of a polyacrylonitrile resin, a polysulfone resin, a cellulose resin, a fluorocarbon resin, a polyether sulfone resin, a polyamide resin and a polyolefin resin,
- the separating layer being partly impregnated into the porous layer in the range of 5 to 30% in terms of the impregnation amount ratio (ηa) defined by Formula (A):
- [impregnation amount ratio (ηa){%}=impregnation depth (s)/(membrane thickness (t1) of separating layer)×100] (A).
1 more element
Dependencies are inferred from the claim text.