Polymorphous luminescent compositions

Details Polymorphous luminescent compositions Polymorphous luminescent compositions

Filed on

1992-09-24

Date issued

1994-05-17

Examiner

Cooper, Jack

Patent Class

Chemistry of inorganic compounds

SubClass

Halogen or compound thereof

SubSubClass

Plural metal or metal and ammonium containing

Other Related Categories

2523014H, C09K 1161, C09K 1167

Type

Patent

Status

active

Patent number

053126122

Description

ABSTRACT:
Polymorphous phosphorescent compounds of the formula MNbOF.sub.5, wherein M is at least one of barium, strontium, lead and calcium, are prepared by the reaction of the appropriate metal oxide or fluoride with niobium(V) oxide in aqueous hydrofluoric acid.

REFERENCES:
patent: 4741893 (1988-05-01), Watanabe et al.
Lipeng et al. "J. of Non-Crystalline Solids" 140 (1992) pp. 220-224.
Levchishina et al. "Chem. Abstracts", vol. 88, 1978, 57754v.

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