Process for producing substances optically transparent to infrar

Details Process for producing substances optically transparent to infrar Process for producing substances optically transparent to infrar

1984-06-29

1985-12-10

Straub, Gary P.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Sulfur containing

423344, 423509, 423561R, 423561A, 313110, 4272552, 501904, C01B 1904, C01B 1700, C01B 2514

Patent

active

045579148

ABSTRACT:
In order to obtain substances that are optically transparent in the infrared range, usable in the manufacture of optical fibers or radiation emitters, a metal or metalloid chalcogenide other than an oxide is produced by a double-substitution reaction between a starting chalcogen compound--particularly a hydride such as H.sub.2 S, H.sub.2 Se or H.sub.2 Te--and a salt of the desired metal or metalloid, e.g. a chloride. The starting compound and the reactant salt preferably are vaporized at a temperature below the melting point of the resulting metal chalcogenide which thereupon precipitates in the reaction chamber.

REFERENCES:
patent: 2671739 (1954-03-01), Lander
patent: 3218204 (1965-12-01), Ruehrwein
patent: 3224912 (1965-12-01), Ruehrwein
patent: 3224913 (1965-12-01), Ruehrwein
patent: 3664866 (1972-05-01), Manaseuit
patent: 4066481 (1978-01-01), Manaseuit et al.
patent: 4447469 (1984-05-01), Peters

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