Process for making apatitic phosphors

Details Process for making apatitic phosphors Process for making apatitic phosphors

1992-06-22

1993-08-03

Cooper, Jack

Compositions

Inorganic luminescent compositions

Compositions containing halogen; e.g., halides and oxyhalides

2523014H, C09K 1173

Patent

active

052326268

ABSTRACT:
In a method of preparing an alkaline earth halophospor having an antimony content greater than about 0.70 weight percent, a uniform mixture of starting raw materials is fired with already fired phosphor of the desired alkaline earth halophosphate so that the already fired phosphor is refired in an inert atmosphere containing volatile species from the uniform mixture of starting raw materials.

REFERENCES:
patent: 2862888 (1958-12-01), Ross
patent: 3109819 (1963-11-01), Gillooly et al.
patent: 3639253 (1970-01-01), Gillooly
patent: 4806824 (1989-02-01), Paynter et al.

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