A glassy crystalline phosphate product and a process for the production thereof

The instant invention is directed to a glassy crystalline phosphate product, comprising at least one alkali metal oxide and phosphorus pentoxide having a molar ratio of greater than about 1.5:1 to less than 2.0:1. The instant invention is also directed to a process for the production of a glassy cry...

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Bibliographische Detailangaben
Hauptverfasser:	WHITNEY, SANDRA L, RALSTON, PAUL H
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL COMPOUNDS THEREOF DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL INORGANIC CHEMISTRY METALLURGY MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25 NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE NON-METALLIC ELEMENTS TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	The instant invention is directed to a glassy crystalline phosphate product, comprising at least one alkali metal oxide and phosphorus pentoxide having a molar ratio of greater than about 1.5:1 to less than 2.0:1. The instant invention is also directed to a process for the production of a glassy crystalline phosphate product comprising at least one alkali metal oxide and phosphorus pentoxide having a molar ratio of greater than about 1.5:1 to less than 2.0:1, comprising the steps of: (a) heating a mixture of at least one alkali metal salt and a source of phosphorus pentoxide until said mixture melts; and (b) quenching said melted mixture.