Titanium dioxide, a process for its production and its use

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

1989-11-20

1991-04-23

Morris, Theodore

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

423610, 106437, C01G 23047

Patent

active

050098799

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/l, 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: 3018186 (1962-01-01), Jenkins
patent: 4187117 (1980-02-01), Gueguin
patent: 4241042 (1980-12-01), Mahjevic et al.
patent: 4564556 (1986-01-01), Lange
patent: 4619908 (1986-10-01), Cheng et al.
patent: 4781911 (1988-11-01), Lawhorne
patent: 4842832 (1989-06-01), Inoue et al.
Patent Abstracts of Japan, vol. 10, No. 373, Dec. 12, 1986.

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