Porous membrane

Details Porous membrane Porous membrane

2008-04-29

2008-04-29

Fortuna, Ana (Department: 1797)

Liquid purification or separation

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Material

C210S490000, C210S500270, C210S500370

Reexamination Certificate

active

07364660

ABSTRACT:
A polyamide having an equilibrium water absorption of not more than 10% is used as a main material. As a polyamide having an equilibrium water absorption of not.more than 10%, for example, a polyamide comprising a dicarboxylic acid component comprising 60-100 mol % of terephthalic acid and a diamine component comprising 60-100 mol % of 1,9-nonanediamine and/or 2-methyl-1,8-octanediamine is used. As a result, a porous membrane showing extremely small dimensional change even after a hot water treatment, and particularly useful as a medical separation membrane permitting an AC sterilization treatment and the like is obtained.

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