Toner compositions

An in situ process for the preparation of toner compositions which comprises the dispersion of a sulfonated polyester of the formula or as essentially represented by the formula ##STR5## wherein M is an ion independently selected from the group consisting of hydrogen, ammonium, an alkali metal ion, an alkaline earth metal ion and a metal ion;

• R is independently selected from the group consisting of aryl and alkyl;
• R' is independently selected from the group consisting of alkyl and oxyalkylene;
• and wherein n and o represent random segments;
• and wherein the sum of n and o are equal to 100 mole percent in a vessel containing an aqueous media of an anionic surfactant, and a nonionic surfactant at a temperature of from about 100.degree. C. to about 180.degree. C. thereby obtaining suspended particles of about 0.05 micron to about 2 microns in volume average diameter;
• subsequently homogenizing the resulting suspension at ambient temperature;
• followed by aggregating the mixture by adding thereto a mixture of cationic surfactant and pigment particles to effect aggregation of said pigment and sulfonated polyester particles;
• followed by heating the pigment-sulfonated polyester particle aggregates above the glass transition temperature of the sulfonated polyester causing coalescence of the aggregated particles to provide toner particles with an average particle volume diameter of from between 3 to 21 microns.