METHOD FOR PRODUCING POWDERS FROM ALKALI SALTS OF SILANOLS
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United States of America Patent
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Mar 13, 2015
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Mar 20, 2014
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Abstract
Alkali metal siliconates with low contents of water and alcohol are economically prepared in a three stage process where organoalkoxysilanes are reacted with a basic alkali metal salt to form an alcohol-rich hydrolysate, the hydrolysate is dried to a powder containing 0.5-5 wt. % alcohol, and residual alcohol is reduced in a post-treatment third step.
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