Continuous process for producing chlorine-free...

Details Continuous process for producing chlorine-free... Continuous process for producing chlorine-free...

C - Chemistry, Metallurgy

07

F

C07F 7/04 (2006.01)

Patent

CA 2260702

Disclosed is a continuous process for producing a chlorine-free tetraalkoxysilane of the formula (R1O)4Si (wherein R1 is hydrocarbon) from metallic silicon powder and an alcohol (R1OH) in the presence of the a base catalyst with improved selectivity and improved yields. The catalyst is a mixture of a silicon compound [R2O-(R3O)m]n Si[OR1]4-n, an alkali metal alcoholate R2O-(R3O)m-M and a (polyether)alcohol R2O-(R3O)m-H, where R2 is hydrocarbon or hydrogen, R3 is hydrocarbon, M is alkali metal, m is 0 to 20 and n is 0 to 4.

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