MAGNESIUM FLUORIDE HYDRATE SOL AND PRODUCTION THEREOF

PURPOSE:To obtain a magnesium fluoride hydrate sol and producing method thereof to be used as a coating material for an antireflection film. CONSTITUTION:The sol consists of colloid particles of magnesium fluoride hydrate having MgF2.nH2O (n is 0.25 to 0.5) compsn. and 10-100nm primary particle size...

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Bibliographische Detailangaben
Hauptverfasser:	WATABE YOSHITANE, SUZUKI KEITARO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS INORGANIC CHEMISTRY METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain a magnesium fluoride hydrate sol and producing method thereof to be used as a coating material for an antireflection film. CONSTITUTION:The sol consists of colloid particles of magnesium fluoride hydrate having MgF2.nH2O (n is 0.25 to 0.5) compsn. and 10-100nm primary particle size. The producing method of a water-base sol of the magnesium fluoride hydrate of this invention consists of processes (a) and (b). (a) An aq. soln. of fluoride is added to an aq. soln. of magnesium salt by the molar ratio of F/Mg=1.9 to 2.0 to produce an aggregation slurry of colloid particles of magnesium fluoride hydrate. (b) Byproduct salts in the slurry are removed. The production of the organosol consists of processes (a), (b) and (c). (c) An org. solvent is substituted for the water in the water-based sol.