Process for producing alkoxysilanes

摘要

In a process for producing an alkoxysilane represented by general formula (III): (CH3)aHbSi(OR)cCl4-(a+b+c) (III) wherein a represents a number of 0 to 2, b represents a number of 1 to 3, c represents a number of 0 to 2, the sum of a+b+c represents a number of not greater than 4 which comprises reacting a chlorosilane represented by general formula (I): (CH3)aHbSiCl4-(a+b) (I) wherein a and b have the same meanings as described above and a+b represents a number of less than 4, with an alcohol represented by general formula (II); ROH (II) wherein R represents an alkyl group, a process for producing said alkoxysilanes characterized in that the reaction of the chlorosilane and the alcohol is performed in the co-presence of (a) an inert low boiling solvent having a boiling point lower than the boiling point of the objective alkoxysilane represented by general formula (III) and a difference in boiling point is not smaller than 4 DEG C. and (b) an inert high boiling solvent having a boiling point higher than the boiling point of the objective alkoxysilane and a difference in boiling point is not smaller than 4 DEG C.