Process for preparing improved tio2 by silicon halide addition

Details Process for preparing improved tio2 by silicon halide addition Process for preparing improved tio2 by silicon halide addition

C - Chemistry, Metallurgy

01

G

C01G 23/07 (2006.01) C09C 1/36 (2006.01)

Patent

CA 2190470

A process for producing substantially anatase-free TiO2 by addition of a silicon halide in a reaction of TiCl4 and an oxygen-containing gas in a plug flow reactor is disclosed. Pigmentary properties such as gloss and CBU are enhanced without loss of durability.

L'invention se rapporte à un procédé de production de TiO¿2? pratiquement exempt d'anatase par addition d'un halogénure de silicium au cours d'une réaction de TiCl¿4? avec un gaz contenant de l'oxygène dans un réacteur à écoulement idéal. Les propriétés pigmentaires, telles que la brillance et un sous-ton de noir de carbone, sont améliorées sans déperdition de durée de vie.

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