ALKALI DECOMPOSITION OF HALOGENATED AROMATIC COMPOUNDS

PURPOSE:To make halogenated aromatic compounds possible to be reduced lower than the detection limit by using an alkali substance in concentration higher than a designated level and coexisting a specific cyclic nitrogen compound when the halogenated aromatic compounds are brought into contact with t...

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Bibliographische Detailangaben
Hauptverfasser:	TANIMOTO FUMIO, YANO TSUNEO, TSUKUMO KIYOHIKO
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS THEREFOR CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING ORPROTECTING AGAINST HARMFUL CHEMICAL AGENTS CHEMISTRY FIRE-FIGHTING FUELS GENERAL METHODS OF ORGANIC CHEMISTRY HUMAN NECESSITIES LIFE-SAVING LUBRICANTS LUBRICATING COMPOSITIONS METALLURGY ORGANIC CHEMISTRY PEAT PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MONOXIDE USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Beschreibung
Zusammenfassung:	PURPOSE:To make halogenated aromatic compounds possible to be reduced lower than the detection limit by using an alkali substance in concentration higher than a designated level and coexisting a specific cyclic nitrogen compound when the halogenated aromatic compounds are brought into contact with the alkali substance in non-proton polar solvent. CONSTITUTION:When a halogenated aromatic compound is brought into contact with an alkali substance for 1-10hr under a temperature of 150-200 deg.C in non- proton polar solvent, the ratio of alkali substance in the system is made 3000mg/kg or higher in the beginning, under coexistence of a cyclic nitrogen compound, if necessary. The halogenated aromatic compound is diluted with hydrocarbon oil of which main component is non-aromatic hydrocarbon in a range from 2mg/kg to 80%. Sodium hydroxide, potassium hydroxide, calcium hydroxide, etc., are used as an alkali substance, and quinoline, quinoxaline, ethylene urea, melamine, etc., are used as a cyclic nitrogen compound.