Blue or bluish green aluminum silicate luminous storage material

Details Blue or bluish green aluminum silicate luminous storage material Blue or bluish green aluminum silicate luminous storage material

1998-08-10

1999-10-05

Koslow, C. Melissa

Compositions

Inorganic luminescent compositions

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

2523016F, C09K 1164

Patent

active

059618841

ABSTRACT:
The present invention provides a luminous storage material that emits a blue or bluish green light, that has high persistence, that is thermally and structurally stable, and that exhibits a high weather resistance in chemically severe conditions. The present invention also provides manufacturing method for this material. A blue aluminum silicate luminous storage material according to this invention is composed of a powdered product that has been activated by Eu.sup.2+ wherein its composition formula is expressed as follows:

REFERENCES:
patent: 3577169 (1971-05-01), Barry
patent: 3897359 (1975-07-01), Kobayashi et al.

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