Process for the preparation of organosilicon compounds
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United States of America Patent
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May 13, 2008
Grant Date -
Mar 22, 2007
app pub date -
Aug 2, 2006
filing date -
Aug 10, 2005
priority date (Note) -
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Abstract
A process for the preparation of an organosilicon compound of the formula (I) (R.sup.1R.sup.2R.sup.3SiR.sup.4).sub.2S.sub.x (I) by reacting haloalkoxysilanes of the general formula (II) R.sup.1R.sup.2R.sup.3SiR.sup.4X (II) with a dry polysulphide of the general formula (III) M.sub.2S.sub.z (III) and/or dry sulphide of the general formula IV M.sub.2S (IV) and optionally sulphur in an organic solvent, the organic solvent being removed from the resulting suspension, the mixture containing the organosilicon compound of the general formula (I) and the solid MX being mixed with water containing at least one buffer, and the resulting phases being separated.
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