Process for producing calcium tungstate phosphor

Details Process for producing calcium tungstate phosphor Process for producing calcium tungstate phosphor

1992-09-23

1993-12-07

Cooper, Jack

Compositions

Inorganic luminescent compositions

Tungsten containing

C09K 1168

Patent

active

052681254

ABSTRACT:
A calcium tungstate phosphor which comprises calcium tungstate as a host and vanadium, wherein the proportion of the vanadium to the calcium tungstate is within a range of from 0.01 to 30 ppm. The phosphor is produced by forming a solid calcium tungstate precipitate from an aqueous medium containing ammonia, calcium ion, tungstate ion and vanadate ion and firing the precipitate in the presence of fluxing material.

REFERENCES:
patent: 3940347 (1976-02-01), Faria et al.
Chemical Abstracts, vol. 81, No. 10, Columbus, Ohio, US; abstract No. 56092W, A. A. Mikhalev & Al; "Effects of Impurities and Preparative Factors . . . " 1974 (no date).

Affiliated with

Also associated with

Rating

Process for producing calcium tungstate phosphor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for producing calcium tungstate phosphor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing calcium tungstate phosphor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2014142