Method for producing polymers in which fillers are incorporated and homogeneously distributed

A method for the production of polymers in which fillers are incorporated and homogeneously distributed, the method comprising:

• inputting a polymer starting material into a twin-screw extruder and melting the polymer starting material in the twin-screw extruder to provide a melt;
• and
• injecting, in a conveying and mixing section, a suspension into the melt, the suspension comprising the fillers and a carrier liquid, the fillers having particle sizes below 10 μm;
• reducing a melt viscosity of the melt by the injecting of the carrier liquid in the conveying and mixing section, wherein a cleavable polycondensate is used as a polymer in the polymer starting material and a low-molecular-weight cleavage product that arises during polycondensation of the polycondensate is used as the carrier liquid, such that the melt is at least partially depolymerized within the conveying and mixing section by cleavage;
• after reducing the melt viscosity, homogenizing the melt, a remainder of the carrier liquid and the fillers;
• and
• increasing, after the homogenization, the melt viscosity of the melt by use of a devolatilizing extruder in which, a vacuum is applied and the carrier liquid is removed from the devolatilizing extruder via the vacuum, such that a polycondensation is carried out.