Alkoxysilanes and oligomeric alkoxysiloxanes by a silicate-acid

Organic compounds -- part of the class 532-570 series – Organic compounds – Silicon containing

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556457, 556458, 556470, C07F 718

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active

051839148

ABSTRACT:
The present invention relates to a novel method of preparing alkoxysilanes and oligomeric alkoxysiloxanes. The method comprises reacting a metal silicate with an acid selected from the group consisting of sulfurous acid and acids with a pKa greater than about 2.5 in the presence of an alcohol. The resultant product is then reacted with an alcohol to form the alkoxysilane or oligomeric alkoxysiloxane, depending on the starting silicate. This method is particularly valuable since the reaction conditions are mild and the reactants are readily available.

REFERENCES:
patent: 2727054 (1955-12-01), Wright
patent: 4923687 (1990-05-01), Schork et al.
Goodwin et al., Inorganic and Organometallic Polymers, ACS symposium 360 (1987).
Goodwin et al., Advances in Chemistry, 224 (1990).
Goodwin et al., Polym. Prepr. Am. Chem Soc Div. Polym Chem, 27, 107 (1986).
Goodwin et al., Inorg Chem, 29, 1216 (1990).

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