Method for preparing pigments

Details Method for preparing pigments Method for preparing pigments

C - Chemistry, Metallurgy

09

C

C09C 1/36 (2006.01) C01G 23/053 (2006.01)

Patent

CA 2059116

ABSTRACT OF THE DISCLOSURE METHOD FOR PREPARING PIGMENTS A method for preparing pigmentary titanium dioxide is claimed. An aqueous solution of a titanium halide is mixed with 0.1 to 1.0% by weight titanium dioxide nuclei and the resultant mixture is heated in a sealed vessel to 150 to 300°C at which temperature it is maintained for at least 15 minutes. The mixture is subjected to ultrasonic vibrations for at least a part of the heating process. The product of the process is useful as a white pigment without need for further treatment to optimise its particle size.

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