Cellulose acetate hemodialysis membrane

Details Cellulose acetate hemodialysis membrane Cellulose acetate hemodialysis membrane

1994-07-26

1997-04-29

Fortuna, Ana

Liquid purification or separation

Filter

Material

21050029, 2105003, 21050031, 21032171, B01D 3900

Patent

active

056245610

ABSTRACT:
A cellulose acetate membrane composed of a mixture comprising a cellulose triacetate and a cellulose diacetate and having an improved heat stability, which does not substantially show a melting peak of cellulose diacetate but substantially shows a melting peak of cellulose triacetate, in a differential thermal analysis. By mixing a cellulose triacetate and a cellulose diacetate at an appropriate ratio, crystallization or orientational crystallization of each component due to a high pressure steam sterilization can be avoided and a cellulose acetate membrane with improved water permeability and sieving coefficient of myoglobin after a high pressure steam sterilization can be obtained.

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patent: 4980063 (1990-12-01), Mahoney et al.
patent: 5211849 (1993-05-01), Kithavich et al.

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