Vapor phase alcoholysis of aminosilanes and carbamatosilanes

Abstract

A vapor phase process for the synthesis of alkoxysilanes of the general formula HSi(OR'").sub.x (R").sub.3-x which comprises reacting (a) a silane of the general formula HSi(NRR').sub.x (R").sub.3-x wherein R, R' and R" are individually hydrogen or an aryl or alkyl group optionally containing unsaturation, each having from one to eight carbon atoms inclusive, and where R' may also be an alkoxy or carbamato group and where x has a value of from one to three; with (b) an alcohol of the general formula R'"OH wherein R'" is an aryl group, or an alkyl group optionally containing unsaturation, each having from one to twenty carbon atoms inclusive and optionally substituted said reaction taking place in the presence of (c) a catalyst in which both the silane and the alcohol are present in gaseous form in a stoichiometric ratio of 0.4 to 1.05 moles of alcohol per mole of silicon-nitrogen bonds and where said catalyst is present in an amount from 0.01 to 10 mole percent of the silicon-nitrogen bonds.

Dependencies are inferred from the claim text.