Titanium dioxide, a process and its production

Details Titanium dioxide, a process and its production Titanium dioxide, a process and its production

1990-06-13

1991-10-29

Morris, Theodore

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

423615, 423616, C01G 23047

Patent

active

050614738

ABSTRACT:
A titanium dioxide composition useful as the opacifier agent for vitreous enamels and fusion enamels comprises TiO.sub.2 predominantly in the form of isometric primary particles from 0.5 to 5.0 .mu.m in size, which are aggregated to predominantly spherolithic particles 1 to 100 .mu.m in diameter, with a BET surface of 1 to 4.5 m.sup.2 /g and an apparent density of 0.2 to 1.3 kg/1, is prepared by subjecting titanium dioxide hydrate having a BET surface of from 50 to 500 m.sup.2 /g to accelerated calcination at temperatures of 800.degree. to 1600.degree. C.

REFERENCES:
patent: 2342483 (1944-02-01), Olson
patent: 2346091 (1944-04-01), Stark et al.
patent: 2439895 (1948-04-01), Keats et al.
patent: 3862297 (1975-01-01), Claridge et al.

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