| 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. |