Coloring agent composition and method for producing same
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United States of America Patent
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Apr 25, 2017
Grant Date -
Jul 14, 2016
app pub date -
Sep 18, 2014
filing date -
Sep 30, 2013
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Abstract
Provided is a coloring agent composition to be added to a gypsum-containing raw material powder constituting a gypsum product and to be used for coloring the gypsum product, the coloring agent composition being a powder containing a pigment, calcined gypsum, and amorphous silica. A process for producing the coloring agent composition includes a first step of mixing a pigment, calcined gypsum, and amorphous silica to obtain a mixed powder. Use of the coloring agent composition makes it possible to easily produce gypsum products such as a powder and a hardened body that are excellent in colorability.
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