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US 4,241,042 AGranted
Spherical titanium dioxide particles and process of manufacture
AssigneeMontedison S.p.A.
InventorsEgon Matijevic, Mario Visca
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Abstract
Titanium dioxide, in the form of discrete, solid substantially spherical particles of a substantially uniform shape and size, is obtained by providing an aerosol comprising discrete liquid particles of a hydrolyzable titanium compound, contacting the aerosol with water vapor in dynamic flow to hydrolyze the liquid titanium (IV) compound to titanium dioxide, and recovering the desired product.
Claims15
A method of preparing titanium dioxide, comprising:
- (A) providing a liquid aerosol comprising discrete liquid droplets of a hydrolyzable titanium (IV) compound;
- (B) contacting the liquid aerosol with water vapor in dynamic flow, to hydrolyze the liquid titanium (IV) compound to titanium dioxide in the form of discrete, solid, substantially spherical particles of a substantially uniform shape and size;
- and
- (C) recovering the titanium dioxide.
1 more element
Dependencies are inferred from the claim text.