Preparation of sulfur-free titanium dioxide

Details Preparation of sulfur-free titanium dioxide Preparation of sulfur-free titanium dioxide

1991-02-04

1992-09-22

Lewis, Michael

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

423611, 423612, 423598, C01G 2304

Patent

active

051495198

ABSTRACT:
Sulfur-free anatase titanium dioxide, readily dispersible in aqueous media and well adopted for the production of electronic-grade alkaline earth metal titanates, e.g., barium and strontium titanates, is prepared by hydrolyzing a sulfur-free compound of titanium in the presence of (i) at least one acid containing either one carboxyl group and at least two hydroxyl and/or amino groups, or at least two carboxyl groups and at least one hydroxyl and/or amino group, or (ii) at least one salt of the at least one acid (i).

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patent: 1914557 (1933-06-01), Craver
patent: 2113946 (1938-04-01), Plechner
patent: 2290922 (1942-07-01), Verduin
patent: 2519389 (1950-08-01), Mayer
patent: 4388288 (1983-06-01), Dupin et al.
patent: 4748016 (1988-05-01), Browaeys et al.
patent: 4923682 (1990-05-01), Roberts et al.

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