PROCESS FOR THE PREPARATION OF ALKOXYSILANES

摘要

The invention pertains to a method of preparing alkoxy silanes containing alkoxy radicals with 6 to 38 carbon atoms by means of transesterification of alkoxy silanes whose alkoxy groups have 1 to 4 carbon atoms, using higher linear and/or branched alcohols with 6 to 38 carbon atoms, in the presence of base or acid catalysts at a pressure of 1 to 800 hPa and a temperature of 25 to 150.degree. C and with constant removal of the resulting alcohol with 1 to 4 carbon atoms, the pressure and temperature in the transesterification being selected so that the higher alcohols used and the silanes do not boil.