An aggregated high surface area kaolin pigment for matte grade ink jet coating has been developed. This pigment can be easily dispersed either cationically or anionically at high solids (～ 60%) with good viscosity. The high pigment solids permit high coating solids with different levels of silica pigment in the coating. The novel pigment and its blends with silica have much lower binder demand than 100% silica gel. The lower binder demand (higher pigment volume concentration) preserves much of the coating porosity of the blend coatings and allows rapid drying of ink jet inks. An intermediate to high quality coated ink jet paper can be produced using the new kaolin based pigment depending upon the level of silica gel in the formulation. The new kaolin pigment offers both economic and operational benefits through lower pigment and drying costs, higher coating solids, better coat weight control, compatibility with both anionic and cationic dispersants, ease of handling, and lower degree of ozone fading compared to 100% silica coatings.
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