CPC C01G 23/053 (2013.01) [C09C 1/3653 (2013.01); C09D 7/62 (2018.01); C01P 2002/70 (2013.01); C01P 2004/03 (2013.01); C01P 2004/64 (2013.01); C01P 2006/60 (2013.01)] | 5 Claims |
1. Iron-containing rutile titanium oxide fine particles satisfying requirements (a) to (f) below:
(a) the fine particles contain not less than 70 mass % of Ti in terms of TiO2, contain Fe and contain Sn, Si and at least one metal element (M) selected from the group consisting of Al, Zr, Sb, Zn, Ni, Ba, Mg and V;
(b) the mass contents of Fe and Ti in terms of oxide satisfy mass of Fe2O3/(total mass of TiO2 and Fe2O3)=0.001 to 0.010;
(c) the mass contents of Ti and Sn in terms of oxide satisfy mass of TiO2/mass of SnO2=6 to 18;
(d) the mass contents of Si and M in terms of oxide satisfy mass of SiO2/mass of MOx/2 (x is the valence of M)=99.9/0.1 to 80/20;
(e) the mass contents of Si and the metal elements in terms of oxide satisfy mass of SiO2/(total mass of TiO2, SnO2, Fe2O3, SiO2 and MOx/2 (x is the valence of M))=0.08 to 0.22; and
(f) the average particle size is 4 to 25 nm.
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