AQUEOUS DISPERSION OF PRECIPITATED CALCIUM CARBONATE STARTING FROM AT LEAST ONE DISPERSING AGENT COMPRISING A COMPOUND CARRYING FLUORIDE IONS

摘要

The object of the invention is the use as a dispersing agent, with a view to dispersing mineral matter containing precipitated calcium carbonate (PCC) in water, of a combination:of at least one (meth)acrylic acid homopolymer and/or copolymer, and/or at least one phosphate compound, and/or at least one cationic polymer,and of at least one fluoride ion-containing compound.;Another object of the invention lies in the aqueous suspensions of mineral matter containing PCC obtained in this manner, and in the dry pigments obtained by drying of the said suspensions.;A final object of the invention lies in the use of the above-mentioned suspensions and dry pigments in the manufacture of paper, and notably in the formulation of paper coatings and in the manufacture of paper sheet, in the manufacture of paints, plastics and rubbers.