Method of purifying alkoxysilanes
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United States of America Patent
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Mar 1, 2005
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N/A
app pub date -
Feb 3, 2004
filing date -
Feb 3, 2004
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Abstract
A mixture containing a monohydric alkyl alcohol and an alkoxysilane is purified by (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 the 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. The preferred salt is lithium chloride, and the monohydric alkyl alcohol is most typically methyl alcohol or ethyl alcohol.
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