| http://www.w3.org/ns/prov#value | - In accordance with the present invention, pigmentary titanium dioxide on which has been placed a coating of at least one metal oxide, such as zirconium oxide, is mildly heated at temperatures of from about 500 C. to about 750 C. and, thereafter, the resulting pigment is coated with at least one hydrous metal oxide of metals selected from the group consisting of aluminum, silicon, zirconium and tit
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