Titanium dioxide pigment composition

Details Titanium dioxide pigment composition Titanium dioxide pigment composition

C - Chemistry, Metallurgy

09

C

C09C 1/36 (2006.01)

Patent

CA 2441852

The invention relates to a titanium dioxide pigment mixture comprising a pigment having high greying stability (pigment type A) and a pigment having increased SiO2 and Al2O3 content in flaky precipitation (pigment type B). Said mixture provides, for example in paper, a high level of opacity for sufficient greying stability. If necessary, the light-fastness of the paper can be further increased by means of known production-conditioned measures on pigment type B.

L'invention concerne un mélange de pigments au dioxyde de titane comprenant un pigment à haute stabilité à la tendance au gris (type de pigment A) et un pigment à teneur élevée en SiO¿2? et Al¿2?O¿3? en précipitation floconneuse (type de pigment B), et fournissant, par exemple pour le papier, une haute opacité pour une stabilité à la tendance au gris suffisante. Si nécessaire, il est possible, en recourant à des mesures connues, conditionnées par la fabrication, sur le type de pigment B, d'accroître la solidité à la lumière du papier.

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