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US 8,518,369 B2Granted
Zeolite impregnated with titanium dioxide
AssigneePQ Corporation
InventorsFlavio Ernesto Ribeiro, Gary A. Baird, Ronaldo dos Santos Flor
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Abstract
Embodiments of the invention relate to methods for making and compositions including zeolite with an impregnated titanium dioxide. Such zeolite/titanium dioxide compositions may be useful, for example, as a substitute or extender for titanium dioxide used in coatings.
Claims6
A process for the preparation of powder of zeolite impregnated with titanium dioxide, comprising:
- preparing a sodium aluminate solution comprising ATH-aluminum trihydrate, sodium hydroxide, and water;
- adding titanium dioxide to the sodium aluminate solution with agitation;
- combining the sodium aluminate solution comprising ATH-aluminum trihydrate, sodium hydroxide, water, and titanium dioxide with sodium silicate;
- heating the solution comprising ATH-aluminum trihydrate, sodium hydroxide, water, titanium dioxide, and sodium silicate until the formation of a slurry comprising zeolite crystals impregnated with titanium dioxide;
- and
- filtering and washing the slurry and drying the cake to produce a powder of zeolite impregnated with titanium dioxide.
3 more elements
Dependencies are inferred from the claim text.