Method for producing particulate titanium oxides

Details Method for producing particulate titanium oxides Method for producing particulate titanium oxides

1989-10-17

1991-07-09

Morris, Theodore

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

423611, 423612, C01G 23047

Patent

active

050304399

ABSTRACT:
The invention relates to a method for the preparation of particulate pigmentary titanium dioxide. The method comprises reacting, in solution, a precursor titanium tetrahalide with sulfuric acid to produce an intermediate titanyl sulfate product. Following crystallization and recovery of this intermediate product from solution the crystallized intermediate is redissolved in an aqueous solvent medium and hydrolyzed at elevated temperatures to provide a particulate amorphous titanium dioxide intermediate product. After separation from the aqueous solvent medium, this intermediate product then is subjected to calcination at elevated temperatures to produce the desired particulate titanium dioxide end product.

REFERENCES:
patent: Re18854 (1933-05-01), Blumfeld
patent: 2113946 (1938-04-01), Plechner et al.
patent: 3341291 (1967-09-01), Mabbs et al.
patent: 3533742 (1970-10-01), Oster
patent: 3856929 (1974-12-01), Angerman et al.
patent: 4021533 (1977-05-01), Piccolo et al.

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