Verfahren und Vorrichtung zur kontinuierlichen Herstellung von Alkoxypolysiloxanen

A continuous process for the preparation of alkoxypolysiloxane in which silane or a silane mixture and a mixture of hydrogen chloride-containing alcohol and water is fed continuously into the lower region of preferably cylindrical stirred reactor, the reaction product formed together with excess hyd...

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Bibliographische Detailangaben
Hauptverfasser:	RAU, HARALD, KROPAC, VACLAV, 4300 ESSEN, DE, QUILITSCH, HERBERT, 5628 HEILIGENHAUS, DE, SCHAMBERG, ECKEHARD, KOERNER, GOETZ, WEITEMEYER, CHRISTIAN., 4300 ESSEN, DE, PATZKE, HANS-JUERGEN, 4650 GELSENKIRCHEN, DE, GIESING, HERBERT, SPIEKER, FRITZ
Format:	Patent
Sprache:	ger
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	A continuous process for the preparation of alkoxypolysiloxane in which silane or a silane mixture and a mixture of hydrogen chloride-containing alcohol and water is fed continuously into the lower region of preferably cylindrical stirred reactor, the reaction product formed together with excess hydrogen chloride-containing alcohol is drawn off continuously after residence time of 30 to 180 minutes at the upper end of the reactor and the undissolved, gaseous portion of hydrogen chloride is carried off at the head of the reactor, the temperature of the reaction mixture or the reaction product, as it flows through the reactor, being raised from a range of -17 DEG to +30 DEG C. to range of +30 DEG to +80 DEG C., the temperature gradient having to be at least 10 DEG C., and the excess alcohol and dissolved hydrogen chloride being removed outside of the reactor in a known manner from the reaction product formed, and the hydrogen chloride-containing alcohol obtained while working up to reaction product being recycled to the reactor. The invention furthermore relates to an apparatus which is particularly suitable for implementing the process.