Method of purifying alkoxysilanes

Details Method of purifying alkoxysilanes Method of purifying alkoxysilanes

2005-03-01

2005-03-01

Barts, Samuel (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

C556S438000, C556S429000, C556S460000, C549S541000

Reexamination Certificate

active

06861546

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.

REFERENCES:
patent: 3792071 (1974-02-01), Nitzsche et al.
patent: 5374761 (1994-12-01), Bank
patent: 6255514 (2001-07-01), Brand et al.
Kirk Othmer Encyclopedia of Chemical Technology, Fourth Edition (1993), vol. 10, pp. 125-180.

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