Water-soluble aromatic polyamides and polyureas

Details Water-soluble aromatic polyamides and polyureas Water-soluble aromatic polyamides and polyureas

1989-04-05

1990-01-23

Sever, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210651, 210654, 21050038, B01D 1300

Patent

active

048956600

ABSTRACT:
Novel sulfonated polyamide and polyurea materials are described. The polymers are water-soluble or water-dispersible, if not crosslinked. The polymers can be crosslinked with polyvalent cations or crosslinking agents. The polymers have utility as membranes, thickeners, coatings and adhesives.

REFERENCES:
patent: 2833744 (1958-05-01), Neher
patent: 3409596 (1968-11-01), Unger et al.
patent: 3506990 (1970-04-01), Richardson et al.
patent: 3567632 (1971-03-01), Richter et al.
patent: 3775361 (1973-11-01), Jenson
patent: 3839294 (1974-10-01), Manos
patent: 4162346 (1979-07-01), Jones et al.
patent: 4471110 (1984-09-01), Christell
patent: 4735717 (1988-04-01), Sims

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