Process for colouring ceramic materials
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United States of America Patent
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Oct 12, 2010
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app pub date -
Dec 22, 2004
filing date -
Dec 23, 2003
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Abstract
The invention relates to a new process for coloring ceramic materials by using aqueous solutions of chromophore ions. In particular, certain types of silica are added to the ceramic mixes which are to be colored, after which aqueous or organic solutions comprising inorganic salts of Fe (II) and/or Fe (III), or organic derivatives of Fe (II) and/or Fe (III) are applied to the surface of the said additive-containing ceramic mixes.
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