CONTINUOUS PROCESS FOR PREPARING SiOC-CONTAINING COMPOUNDS
AssigneeWacker Chemie AG
InventorsVolker Stanjek, Nicolas Imlinger, Heribert Westermayer, Wolfgang Wewers
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Abstract
Organosilicon compounds bearing SiOC groups and having low residual silicon-bonded chlorine are prepared continuously by reacting a chlorosilane with alcohol and optionally water by contacting a gaseous phase containing alcohol with a liquid phase containing silane, organosilicon intermediates, organosilicon compounds containing SiOC groups and optional inert solvent in a reaction column in which the gas phase passes through the liquid phase in bubble form, or is provided with a vaporizer operating by a crossflow principle.
Claims12
-9. (canceled)
A process for continuously preparing compounds containing SiOC groups, comprising:
- reacting a silane having silicon-bonded chlorine atoms with an alcohol and optionally also with water to release hydrogen chloride, at least part of the reaction being performed in a reaction column in which a gaseous phase contains a total of at least 80% by weight of alcohol, hydrogen chloride, any water, and any inert gas, and a liquid phase contains a total of at least 80% by weight of silane, silicon-containing intermediates, compounds containing SiOC groups, and any inert solvent,
- wherein the alcohol is passed repeatedly through the liquid phase
- a) wherein at least one reaction column is provided with internals which pass the gas phase through the liquid phase in bubble form, and/or
- b) wherein at least one reaction column is provided with a vaporizer which operates by a crossflow principle.
Dependencies are inferred from the claim text.