A description is given of a polymer dispersion comprising i) polymer particles
dispersed in an aqueous medium and composed of units of ethylenically unsaturated
monomers, ii) a water-soluble polymeric polyelectrolyte which along a polymeric
backbone carries a large number of ionic groups of uniform charge character or
groups which can be ionized to such groups, and iii) an ionic surfactant which
carries an ionic group having a charge character opposite to that of the polymeric
polyelectrolyte, or a group which can be ionized to such a group. The polymer dispersion
can be coagulated by simple dilution with water.
