Reversible coacervation of anion-containing aqueous disperse sys

Details Reversible coacervation of anion-containing aqueous disperse sys Reversible coacervation of anion-containing aqueous disperse sys

1974-10-21

1976-04-13

Tillman, Murray

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

252 875, 260 296AT, 260 296N, 260 296RW, 260 297AT, 260 297N, 260 297W, 260 861N, C08L 2336, C08L 2722

Patent

active

039502961

ABSTRACT:
Fluid, stable compositions containing aqueous disperse systems of (1) anionizable material, e.g., an aqueous solution of an organic polymer having carboxylate functionality, and (2) a water-dispersible amphoteric polyelectrolyte, e.g., a copolymer of 2-aminoethyl methacrylate and methacrylic acid, reversibly coavervated by maintaining the pH of the composition at a value below the isoelectric point of the amphoteric polyelectrolyte and a value at which the disperse material contains anions. The resulting coacervate is readily redispersed by increasing the pH of the coacervate to a value above the isoelectric point of the polyelectrolyte. Such compositions are useful in warp sizing of yarns and in other coating applications.

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