Infrared reflecting blue pigment, infrared reflecting green pigment, paint and resin composition using the infrared reflecting blue pigment, and paint and resin composition using the infrared reflecting green pigment
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United States of America Patent
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Feb 24, 2015
Grant Date -
Sep 10, 2009
app pub date -
Mar 3, 2009
filing date -
Mar 7, 2008
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Abstract
The present invention relates to an infrared reflecting blue pigment comprising a composite oxide comprising Co, Al and mg, wherein a content of Mg in the blue pigment is 11 to 22% in terms of a molar ratio thereof based on whole metal element present in the blue pigment, and the blue pigment has a BET specific surface area of 10 to 100 m2/g; and an infrared reflecting green pigment comprising a composite oxide comprising Co, Al, Mg and Fe, wherein a content of Mg in the green pigment is 11 to 22% in terms of a molar ratio thereof based on whole metal element present in the green pigment, a content of Fe in the green pigment is 0.5 to 20% in terms of a molar ratio thereof based on whole metal element present in the green pigment, and the green pigment has an average particle diameter of 0.02 to 1.2 μm.
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