Polyamide of disulfonated diamine and permselective membrane the

Details Polyamide of disulfonated diamine and permselective membrane the Polyamide of disulfonated diamine and permselective membrane the

1982-08-02

1984-09-11

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

2105002, 428 35, 528172, 528173, 528183, C08G 6932

Patent

active

044711107

ABSTRACT:
Aromatic polyamides which include units based on disulfonated aromatic diamines, the sulfonate groups being present as sulfonic acid groups or alkali metal, alkaline earth metal, transition metal, aluminum, ammonium or lower alkyl quaternary ammonium salts thereof, are provided. Permselective membranes fabricated from such polyamides are also provided. The membranes are suitable for reverse osmosis, especially for purification of water.

REFERENCES:
patent: 3567632 (1971-03-01), Richter et al.
patent: 3993625 (1976-11-01), Kurihara et al.
patent: 4086215 (1978-04-01), Kurihara et al.
patent: 4162346 (1979-07-01), Jones et al.
Chemical Abstracts, 91:75444k, Sep. 3, 1979.
Chemical Abstracts, 83:444013z, Aug. 11, 1975.
Chemical Abstracts, 80:121812b, Jun. 3, 1974.

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