Inorganic red pigment
AssigneeBASF SE
InventorsEmily M. MUTAMBI, Aron WOSYLUS, Christof KUJAT, Petra DAMM, Jürgen OSWALD
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Abstract
An inorganic red pigment is provided which pigment comprises titanium oxide, tin oxide, zinc oxide, and tungsten oxide, wherein the molar ratios of the oxides correspond to a composition of formula (TiO2)a(SnOx)b(ZnO)c(WO3)d (I), wherein SnOx comprises SnO and SnO2 in a molar ratio of SnO:SnO2 of from 70:30 to 100:0; 0.8≦a≦3.0; 0.3≦b≦2.0; 0.3≦c≦1.3; and 0.01≦d≦0.8. Optionally, SiO2, other metal oxides or metal sulfides may be present. The inorganic pigment may be used as colorant in various applications.
Claims20
-15. (canceled)
16) A pigment comprising titanium oxide, tin oxide, zinc oxide and tungsten oxide, wherein the molar ratios of the oxides correspond to a composition of formula
- (TiO2)a(SnOx)b(ZnO)c(WO3)d (I), wherein
- SnOx comprises SnO and SnO2 in a molar ratio of SnO:SnO2 of from 0.7:0.3 to 1:0;
- 0.8≦a≦3.0;
- 0.3≦b≦2.0;
- 0.3≦c≦1.3;
- and
- 0.01≦d≦0.8.
Dependencies are inferred from the claim text.