Kaolin pigment products

Details Kaolin pigment products Kaolin pigment products

D - Textiles, Paper

21

H

D21H 19/36 (2006.01) C09D 7/14 (2006.01)

Patent

CA 2373914

51 A pigment product for use in a coating composition to provide a gloss coating on paper, the pigment product comprising a processed particulate kaolin having a particle size distribution such that at least about 80% by weight of the particles have an equivalent spherical diameter less than about 2 µm and in the range of from about 15% to about 40% by weight of the particles have an equivalent spherical diameter less than about 0.25 µm and the particles have a shape factor in the range of from about 30 to about 60 and wherein the pigment product comprises a blend of Component A: a particulate kaolin in which the particles have a shape factor of at least about 45, and Component B: a particulate kaolin in which the particles have a shape factor of less than about 20.

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