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Process for preparing a weather-resistant and/or light-stable rutile titanium dioxide pigment
Process for preparing a weather-resistant and/or light-stable rutile titanium dioxide pigment
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机译:制备耐候和/或耐光金红石型二氧化钛颜料的方法
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摘要
1. A process of producing titanium dioxide pigments by calcining the precipitation, which may be doped, annealing in an oxygen-containing atmosphere, cooling and grinding, characterized in that a photostable and/or weather-resisting titanium dioxide-rutile pigment is produced in that calcined titanium dioxide is subjected to tempering in the range of 250 to 1000 degrees C in an oxygen-containing atmosphere, preferably air, and the tempered material is quenched.
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