Patent ID: 7811375

Claim:
A heated mixture comprising: (a) from about 1% to about 46% by weight of lithopone having a refractive index greater than 1.8; and (b) from about 54% to about 99% by weight of a dehydroxylated kaolin, wherein when the dehydroxylated kaolin comprises metakaolin, the heated mixture has a GE brightness equal to or greater than 90% and a Hunter yellowness index of less than about 11, and when the dehydroxylated kaolin comprises fully calcined kaolin, the heated mixture has a GE brightness greater than 90% and a Hunter yellowness index of less than about 7, wherein said heated mixture is formed by mixing hydrous kaolin having a GE brightness of about 88 or more and a refractive index from about 1.56 to about 1.58, and the high refractive index pigment, and heating at a temperature from about 760° C. to about 1150° C., and the heated mixture has a particle size distribution where at least about 80% to about 90% by weight of the particles have a particle size of about 2 microns or less and less than about 5% by weight of the particles have a particle size of about 0.2 micron.