Patent ID: 6861546

Claim:
A method of purifying a mixture containing a monohydric alkyl alcohol and an alkoxysilane having the formula R m Si(OR′) 4-m where R is a functional group; R′ is a C 1 to C 8 monovalent hydrocarbon group; m is zero, 1, 2, or 3; except that R is not hydrogen when R′ is methyl and m is one; the method comprising: (i) adding an organic salt or an inorganic salt to the monohydric alkyl alcohol and the alkoxysilane; (ii) mixing the organic or inorganic salt with the monohydric alkyl alcohol and alkoxysilane; and (iii) separating from (ii) a first phase containing the alkoxysilane, and a second phase containing the monohydric alcohol and the organic or inorganic salt; provided the first phase containing the alkoxysilane is the lower phase, and the second phase containing the monohydric alcohol and the organic or inorganic salt is the upper phase.