Process for preparing reverse-osmosis membrane, and membrane obt

Details Process for preparing reverse-osmosis membrane, and membrane obt Process for preparing reverse-osmosis membrane, and membrane obt

1989-10-20

1991-07-02

Spear, Frank

Liquid purification or separation

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Supported, shaped or superimposed formed mediums

21050038, 264 41, B01D 6700

Patent

active

050283294

ABSTRACT:
The present invention relates to a process for preparing polypiperazinamide-based reverse-osmosis membranes comprising:

REFERENCES:
patent: 3951815 (1976-04-01), Wrasidlo
patent: 4123424 (1978-10-01), Credali et al.
patent: 4230583 (1980-10-01), Chiolle et al.

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