Kaolin pigment products
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United States of America Patent
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N/A
Issued Date -
Sep 25, 2003
app pub date -
Jul 18, 2002
filing date -
Feb 28, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
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 .mu.m 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 .mu.m 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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