| abstract |
FIELD: chemistry. n SUBSTANCE: invention can be used in chemical industry for producing mineral filler used in polymer compositions, paints and paper production. Method of producing mineral filler includes a step for dry grinding of calcium carbonate-containing material in the presence of a polyol. Further, the material is treated with mono-substituted succinic anhydride, and/or monosubstituted succinic acid, and/or its lithium, sodium, potassium, strontium, calcium, magnesium, aluminum salts to obtain a material containing calcium carbonate, having a treated layer on the surface. n EFFECT: disclosed mineral filler has reduced moisture absorption compared to prior art products. n 15 cl, 2 tbl, 2 ex |