Preparation of tetraalkoxysilanes
AssigneeUnion Carbide Corporation
InventorsWilliam B. Herdle, Bernard Kanner, Donald L. Bailey
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Abstract
Process for the preparation of tetraalkylorthosilicates which comprises contacting alkanol and dimethylamine with copper-activated silicon, followed by adding alkanol to the resultant silane mixture.
Claims5
A process for the preparation of a tetraalkylorthosilicate with comprises (I) contacting at a temperature in the range of 200.degree. C. through 350.degree. C. for a period of time sufficient to form a silane mixture (A) an alkanol ROH wherein R is an alkyl group of from one to three carbon atoms and (B) dimethylamine with (C) copper-activated silicon, wherein the mole ration of dimethylamine (B) to alkanol (A) is in the range of from 0.2:1 to 10:1, and (II) subsequently adding to said silane mixture at least enough alkanol ROH to convert all of the silanes present to tetraalkylorthosilicates.
Dependencies are inferred from the claim text.