PROCESS FOR THE PREPARATION OF DISCRETE PARTICLES OF CALCIUM CARBONATE

摘要

A process for the precipitation of discrete prismatic calcium carbonate particles by carbonation of aqueous calcium hydroxide containing a saccharide or polysaccharide or a saccharide or polysaccharide and a metal ion at temperatures of from about 8 DEG C to about 64 DEG C is disclosed. The resulting product has specific surface areas between about 10 m<2>/g and about 120 m<2>/g and is useful in paints, plastics, paper coating, paper filling, and pharmaceutical applications.