Patent ID: 8604101

Claim:
A process for producing aqueous dispersions of thermoplastic polymers which have a plurality of ester groups and/or carbonate groups in the main polymer chain and which have an acid number of less than 5 mg KOH/g, and which have a zero-shear viscosity η 0 of at least 60 Pa·s at 180° C., which comprises introducing a composition which comprises the polymer and which is composed of at least 99% by weight of the polymer at a temperature above the melting or softening point of the polymer, into an aqueous dispersion medium which comprises at least one surfactant substance, and the resultant aqueous emulsion of the polymer is quenched, wherein the introduction of the polymer into the aqueous dispersion medium is carried out in a mixing apparatus which has at least one rotor-stator mixer and the mixing apparatus has a plurality of rotor-stator mixers connected to one another in series.