PROCESS FOR THE PURIFICATION OF SILICONE OILS

1. Method for the cleaning of silicone oil, in which contaminations present in the silicone oil are removed by addition of a drying agent as well as of an adsorbing means, characterised thereby, - that the drying agent is selected from the group comprising molecular sieves, silica gel and active alu...

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Bibliographische Detailangaben
Hauptverfasser:	BEHNKE, JOACHIM, GEORGE, ULF, MERK, HANS, ROCHAU, ERWIN
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G BASIC ELECTRIC ELEMENTS CABLES CHEMISTRY COMPOSITIONS BASED THEREON CONDUCTORS ELECTRICITY FUELS GENERAL PROCESSES OF COMPOUNDING INSULATORS LUBRICANTS LUBRICATING COMPOSITIONS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PEAT PETROLEUM, GAS OR COKE INDUSTRIES SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES TECHNICAL GASES CONTAINING CARBON MONOXIDE THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION WORKING-UP
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Beschreibung
Zusammenfassung:	1. Method for the cleaning of silicone oil, in which contaminations present in the silicone oil are removed by addition of a drying agent as well as of an adsorbing means, characterised thereby, - that the drying agent is selected from the group comprising molecular sieves, silica gel and active aluminium oxide as well as mixtures thereof, - that the adsorbing means is selected from the group comprising active carbon and activated bleaching earth as well as mixtures thereof, - that the drying agent and the adsorbing means act on the silicone oil during an action time which is dependent on the demanded purity of the silicone oil, - that the drying agent and the adsorbing means are separated from the silicone oil by sedimentation as well as filtration after run-down of the action time, - that during the action time ad after this separating process, extremely dry inert gas is conducted through the silicone oil until this possesses a predeterminable residual water content and - that the gases possibly present in the silicone oil are subsequently removed by the passing-through of helium as well as by heating in vacuum.