Preparation of organosiloxanes

Abstract

In the preparation of cyclic and linear organosiloxanes by reacting an organohalogenosilane with a compound of the formula ROR' in which R is an alkyl radical with 1-4 C atoms, and R' is hydrogen or an alkyl radical with 1-4 C atoms, The improvement which comprises effecting the reaction in an aqueous solution of a Lewis acid. Preferably the organohalogenosilane is a di- or tri-organo-chloro or -bromo-silane wherein the organo radical is selected from the group consisting of alkyl or alkenyl of up to 4 C atoms or aryl, especially dimethyldichlorosilane, and the Lewis acid is a 40-90% solution of ZnCl.sub.2, FeCl.sub.3, CdCl.sub.2 or H.sub.2 SO.sub.4. Advantageously ROR' is methanol, ethanol, propanol, dimethyl ether or diethyl ether.

Dependencies are inferred from the claim text.