A process for preparing at least one mineral material and / or at least one pigment comprising natural and / or precipitated calcium carbonate, aqueous suspensions and / or dispersions of pigments and / or mineral materials, dry pigments, and use. aqueous dispersions and suspensions and dry pigments

摘要

A process for preparing at least one mineral material and / or at least one pigment comprising natural and / or precipitated calcium carbonate, suspensions and / or aqueous dispersions of pigments and / or mineral materials, dry pigments, and use. aqueous dispersions and suspensions and dry pigments. The present invention is a process for preparing at least one mineral material and / or at least one pigment, comprising a partially organophilic and partially hydrophilic calcium carbonate, in which the carbonate is mixed and / or triturated and / or concentrated in aqueous medium in the presence of at least one salt of ethylene acrylic acid, a dispersing and / or grinding aid being introduced before and / or during this treatment step. Another object of the invention is the aqueous calcium carbonate dispersions and suspensions thus obtained. they may be dried and the dried pigments obtained are also an object of the invention. The use of these aqueous dispersions and dry pigments in the field of plastics, paints and paper is another object of the invention.