Method for producing a dispersible, fine titanium pyrophosphate

Details Method for producing a dispersible, fine titanium pyrophosphate Method for producing a dispersible, fine titanium pyrophosphate

1996-02-05

1998-03-31

Langel, Wayne

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

C01B 2542

Patent

active

057335192

ABSTRACT:
A novel method for forming a dispersable, fine titanium pyrophosphate powder by reacting titanium dioxide and a molar excess of phosphoric acid. The excess phosphoric acid, at a phosphorus pentoxide to titanium dioxide mole ratio greater than one, significantly improves the yield of the reaction product as a fine powder. A phosphorus pentoxide to titanium dioxide mole ratio of about 1.20 to about 1.25 results in over a 90% yield of a dispersable, fine titanium pyrophosphate powder having a particle size less than one micron in diameter.

REFERENCES:
patent: 2959464 (1960-11-01), Craig
patent: 3471252 (1969-10-01), Sugahara et al.
patent: 3936304 (1976-02-01), Kasugai et al.
patent: 3996332 (1976-12-01), Elger et al.
patent: 5482768 (1996-01-01), Kawasato et al.

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