Process for producing a moulding compound comprising the following constituents: 97% to 36% by weight of polycarbonate, 3% to 20% by weight of reinforcing filler, 0% to 61% by weight of other moulding compound constituents, the sum of the constituents being 100% by weight, and wherein a masterbatch is first produced that comprises the following constituents: 70% to 25% by weight of polycarbonate, 30% to 70% by weight of reinforcing filler, 0% to 5% by weight of other masterbatch constituents, the sum of the constituents being 100% by weight, and wherein the masterbatch is compounded in a continuous single-shaft kneader in the following steps: adding polycarbonate and at least one reinforcing filler to a continuous single-shaft kneader, compounding the polycarbonate and the at least one reinforcing filler using the continuous single-shaft kneader, wherein the proportion of polyester in the masterbatch is not more than 0.9% by weight, and after which the following steps are carried out: adding the masterbatch and polycarbonate to a compounding unit; compounding the masterbatch and polycarbonate with the compounding unit, wherein the reinforcing filler is selected from one or more members of the group made up of titanium dioxide (TiO 2), talc (Mg 3 Si 4 O 10 2), dolomite (CaMg[CO 3] 2), kaolinite (Al 4 [ 8 |Si 4 O 10]) and wollastonite (Ca 3 [Si 3 O 9]), preferably selected from one or more members of the group made up of titanium dioxide (TiO 2) and talc (Mg 3 Si 4 O 10 2), and wherein either the proportion of polyester in the moulding compound is not more than 0.9% by weight or the proportion of polyester in the moulding compound is not less than 22% by weight and not more than 58% by weight. 97% to 36% by weight of polycarbonate, 3% to 20% by weight of reinforcing filler, 0% to 61% by weight of other moulding compound constituents, the sum of the constituents being 100% by weight, and wherein a masterbatch is first produced that comprises the following constituents: 70% to 25% by weight of polycarbonate, 30% to 70% by weight of reinforcing filler, 0% to 5% by weight of other masterbatch constituents, the sum of the constituents being 100% by weight, and wherein the masterbatch is compounded in a continuous single-shaft kneader in the following steps: adding polycarbonate and at least one reinforcing filler to a continuous single-shaft kneader, compounding the polycarbonate and the at least one reinforcing filler using the continuous single-shaft kneader, wherein the proportion of polyester in the masterbatch is not more than 0.9% by weight, and after which the following steps are carried out: adding the masterbatch and polycarbonate to a compounding unit; compounding the masterbatch and polycarbonate with the compounding unit, wherein the reinforcing filler is selected from one or more members of the group made up of titanium dioxide (TiO 2), talc (Mg 3 Si 4 O 10 2), dolomite (CaMg[CO 3] 2), kaolinite (Al 4 [ 8 |Si 4 O 10]) and wollastonite (Ca 3 [Si 3 O 9]), preferably selected from one or more members of the group made up of titanium dioxide (TiO 2) and talc (Mg 3 Si 4 O 10 2), and wherein either the proportion of polyester in the moulding compound is not more than 0.9% by weight or the proportion of polyester in the moulding compound is not less than 22% by weight and not more than 58% by weight. 70% to 25% by weight of polycarbonate, 30% to 70% by weight of reinforcing filler, 0% to 5% by weight of other masterbatch constituents, the sum of the constituents being 100% by weight, and wherein the masterbatch is compounded in a continuous single-shaft kneader in the following steps: adding polycarbonate and at least one reinforcing filler to a continuous single-shaft kneader, compounding the polycarbonate and the at least one reinforcing filler using the continuous single-shaft kneader, adding polycarbonate and at least one reinforcing filler to a continuous single-shaft kneader, compounding the polycarbonate and the at least one reinforcing filler using the continuous single-shaft kneader, wherein the proportion of polyester in the masterbatch is not more than 0.9% by weight, and after which the following steps are carried out: adding the masterbatch and polycarbonate to a compounding unit; compounding the masterbatch and polycarbonate with the compounding unit, adding the masterbatch and polycarbonate to a compounding unit; compounding the masterbatch and polycarbonate with the compounding unit, wherein the reinforcing filler is selected from one or more members of the group made up of titanium dioxide (TiO 2), talc (Mg 3 Si 4 O 10 2), dolomite (CaMg[CO 3] 2), kaolinite (Al 4 [ 8 |Si 4 O 10]) and wollastonite (Ca 3 [Si 3 O 9]), preferably selected from one or more members of the group made up of titanium dioxide (TiO 2) and talc (Mg 3 Si 4 O 10 2), and wherein either the proportion of polyester in the moulding compound is not more than 0.9% by weight or the proportion of polyester in the moulding compound is not less than 22% by weight and not more than 58% by weight.