IRON OXIDE RED PIGMENT
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United States of America Patent
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Issued Date -
May 15, 2014
app pub date -
Nov 14, 2012
filing date -
Nov 14, 2012
priority date (Note) -
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Abstract
Disclosed are a hematite composite formed by aggregation of fine particles, each of the fine particles comprising a crystalline hematite particle and phosphorus-containing amorphous silicate covering the surface of the crystalline hematite particle; a pigment comprising the hematite composite; a cosmetic composition comprising a cosmetic pigment containing the hematite composite and a cosmetic base; and a method for producing the hematite composite, comprising the step of heat-treating an amorphous and/or microcrystalline iron oxide containing silicon and phosphorus.
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