Title: Process for the preparation of organoalkoxysilanes

Abstract: An improvement in a process for the esterification of a organochlorosilane by feeding alcohol into a chlorosilane maintained within a reaction zone without said alcohol contacting said chlorosilane in the gas phase wherein the esterification is performed stepwise with extraction of hydrogen chloride which has developed, the improvement which comprises employing in at least a final esterification step an organochlorosilane of the formula H.sub.a R.sub.b SiCl.sub.4-a-b wherein R represents an optionally halogen-substituted alkyl radical which can also contain an oxygen or sulfur atom in the chain, or a halogen or a NO.sub.2 group or a protected phenolic group containing aryl radical, a equals 0, 1, or 2, b equals 1 or 2, and a+b amounts to a maximum of 3, said final esterification step being performed with the addition of heat.

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Inventors: Kotzsch, Hans-Joachim (Rheinfelden, DE, US)
Seiler, Claus-Dietrich (Rheinfelden, DE, US)
Vahlensieck, Hans-Joachim (Wehr, DE, US)

Application Number: 000605
Filing Date: 1979-01-02
Publication_date: 1980-10-14
Assignee: Dynamit Nobel Aktiengesellschaft (Troisdorf, DE)
Primary Class(es): 556/422 556/446, 556/471
Other Classes:
US Patent Ref:

3651117	Mar, 1972	Bennett et al.	260/448.
3792071	Feb, 1974	Nitzsche et al.	260/448.
3985781	Oct, 1976	Kotzsch et al.	260/448.

Other Refs:
Primary Examiner: Shaver, Paul F.
Assistant Examiner:
Attorney: Sprung, Felfe, Horn, Lynch & Kramer