Method for purifying alkoxysilane

Details Method for purifying alkoxysilane Method for purifying alkoxysilane

C - Chemistry, Metallurgy

07

F

260/449, 260/447

C07F 7/08 (2006.01) C07F 7/04 (2006.01) C07F 7/20 (2006.01)

Patent

CA 1307536

METHOD FOR PURIFYING ALKOXYSILANE ABSTRACT A method for purifying alkoxysilane with the general formula, RmSi(OR1)4-m. The method significantly lowers the level of non-hydrolyzable chlorine-based impurities, as well as the level of hydrolyzable chlorine- based impurities. The method comprises: (i) heating the alkoxysilane in the presence of a treating agent selected from a group which consists of acid clays and metal halides; (ii) contacting the alkoxysilane with a neutral- ization agent; and (iii) separating the alkoxysilane from the treating agent, the unused neutralization agent and the by-products of neutralization.

521664

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