Patent ID: 8580082

Claim:
A composition comprising a blend or mixture of (i) a Grade B precipitated calcium carbonate (PCC) and/or a Grade C PCC and (ii) a scalenohedral PCC (S-PCC), wherein the Grade B PCC has the following particle size distribution: 98% of particles are <5 microns, 66% of particles are <2 microns, 32% of particles are <1 microns, 12% of particles are <0.5 microns and 6% of particles are <0.2 microns, and wherein the Grade C PCC has the following particle size distribution: 99% of particles are <5 microns, 66% of particles are <2 microns, 35% of particles are <1 microns, 16% of particles are <0.5 microns and 11% of particles are <0.2 microns.