| 摘要 |
<p>A continuous process for the production of an alkoxy silicone corresponding to the general formula R4-n-m Si(OR')n C1m in which R represents hydrogen or an alkyl radical having from 1 to 12 carbon atoms, R' represents an alkyl radical having from 1 to 11 carbon atoms, m has a value or from 0. to 3, n has a value of from 1 to 4, and the sum of n and m is less than or equal to 4, by reacting a chlorosilane corresponding to the general formula R4-n-m Sin + m with an alcohol of the general formula R'OH in a ratio of n moles of alcohol for each mole of chlorosilane wherein R, R', m and n have the meanings specified above, which process comprises introducing the chloro silane and the alcohol in the liquid phase into the top of a distillation column, reacting the chlorosilane and the alcohol in the column to form the desired alkoxy silane and hydrogen chloride, removing the hydrogen chloride from the top of the column and removing the alkoxy silane from the bottom of the column. Such a process gives a variety of different, highly pure silane esters in substantially quantitative yields, which silane esters are of interest in the painting or foundry industries, in the semiconductor chemistry or for the synthesis, etc.</p> |
