Process for the preparation of ultrafiltration membranes of...

Details Process for the preparation of ultrafiltration membranes of... Process for the preparation of ultrafiltration membranes of...

2005-02-22

2005-02-22

Fortuna, Ana (Department: 1723)

Liquid purification or separation

Filter

Material

C210S493400, C210S500270, C210S500420, C264S041000

Reexamination Certificate

active

06858141

ABSTRACT:
The present Application relates to a process for the preparation of ultrafiltration membranes from polyacrylonitrile using malic acid as additives, with said membrane of molecular weight ranging between 80 to 180K, showing high purification and water permeating ability.

REFERENCES:
patent: 3615024 (1971-10-01), Michaels
patent: 3616024 (1971-10-01), Windle
patent: 4177150 (1979-12-01), Inoue et al.
patent: 4251605 (1981-02-01), Inoue et al.
patent: 4252652 (1981-02-01), Elfert et al.
patent: 4323627 (1982-04-01), Joh
patent: 4366062 (1982-12-01), Kurihara et al.
patent: 4584103 (1986-04-01), Linder et al.
patent: 5039421 (1991-08-01), Linder et al.
patent: 5265734 (1993-11-01), Linder et al.
patent: 5281337 (1994-01-01), Chou et al.

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