Method of manufacturing a luminescent sulfide

Details Method of manufacturing a luminescent sulfide Method of manufacturing a luminescent sulfide

1974-01-07

1976-05-18

Cooper, Jack

Compositions

Inorganic luminescent compositions

Zinc or cadmium containing

C09K 1130, C09K 1118, C09K 1114

Patent

active

039576787

ABSTRACT:
A method of manufacturing a luminescent sulfide of zinc and/or cadmium, which sulfide is self-activated or is activated by silver, copper and/or gold and coactivated by aluminum, gallium, indium, scandium and/or the rare earths. Introduced into a reaction vessel are: a reaction mixture (a) comprising zinc and/or cadmium sulfide and the activator and coactivator elements in the desired quantities and furthermore a material (b) from which a carbon-sulfur compound and/or hydrogen sulfide can be produced upon heating. The reaction vessel is subsequently closed and is then heated at 950 - 1250.degree.C. The material (b) in the reaction vessel is separated by a partition from the reaction mixture (a) and material transport between (b) and (a) can take place through the gas phase.

REFERENCES:
patent: 2623858 (1952-12-01), Kroger
patent: 3655575 (1972-04-01), Faria et al.
patent: 3704232 (1972-11-01), Frey et al.

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