Method for improving a manganese activated zinc silicate phospho

Details Method for improving a manganese activated zinc silicate phospho Method for improving a manganese activated zinc silicate phospho

1988-11-07

1991-08-13

Cooper, Jack

Compositions

Inorganic luminescent compositions

Tungsten containing

2523016F, C09K 1159, C09K 1168

Patent

active

050394495

ABSTRACT:
A new and improved method of treating a manganese activated zinc silicate phosphor is described. The method comprises heating a manganese activated zinc silicate phosphor powder having cations consisting essentially of zinc, silicon, manganese, and tungsten and having a 350 nm reflectance less than 80% and a 275 nm reflectance greater than 13.5% to a temperature of about 1225.degree. C. in air. The phosphor powder is then cooled to room temperature and wet milled in an acid solution. The phosphor powder is then separated from the acid solution washed in water and dried to form a dry phosphor powder having a 350 nm reflectance equal to or greater than 80% and a 275 nm reflectance equal to or less than 13.5%.

REFERENCES:
patent: 3416019 (1968-12-01), Kaduk
patent: 4315190 (1982-02-01), Peters et al.
patent: 4390449 (1983-06-01), Peters et al.
patent: 4728459 (1988-03-01), Fan et al.

Affiliated with

Also associated with

Rating

Method for improving a manganese activated zinc silicate phospho does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for improving a manganese activated zinc silicate phospho, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for improving a manganese activated zinc silicate phospho will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1526000