FIELD: chemistry.
SUBSTANCE: method of producing polymer material, particularly polyethylene terephthalate (PET), which is filled with one filler, preferably calcium carbonate (CaCO3), which is sensitive to hydrolytic breakdown, is optionally hygroscopic, thermoplastic and is obtained by polycondensation, wherein under vacuum conditions while stirring constantly and at high temperature, a mixture of a still solid, optionally soft polymer material is filler is prepared first and wherein filler which is not subjected to pre-drying at the moment of adding is used, said filler having moisture content (H2O) higher than 500 ppm, particularly higher than 1000 ppm. Also disclosed is use of the filler to produce said filled polymer.
EFFECT: end products do not contain bubbles.
13 cl, 3 ex
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