Patent ID: 6149723
Filing Date: 2000-11-21
Classification: C01P,C09C,D21H

Abstract:
A composition for a kaolin clay pigment for a coating application on paper, said kaolin clay pigment comprising: kaolin clay particles having a particle size distribution characterized as (a) more than 96% by weight of the kaolin clay particles are finer than 5 microns of which about 5 to about 20% by weight or by volume are kaolinite stacks or books concentrated in the greater than 1 micron size fraction; (b) about 88% to about 95% by weight of the kaolin particles are finer than 2 microns; (c) about 65% to about 85% by weight of the kaolin particles are finer than 1 micron; and (d) about 15% to about 25% of the kaolin particles are finer than 0.25 microns.