Patent ID: 6172251
Filing Date: 2001-01-09
Classification: C07F

Abstract:
A process for the production of organosilicon compounds of the formula Z-Alk-S.sub.n -Alk-Z wherein Z is selected from the group consisting of ##STR15##wherein R.sup.1 is an alkyl group containing from 1 to 4 carbon atoms, a cyclohexyl group or a phenyl group; wherein R.sup.2 is an alkoxy group containing from 1 to 8 carbon atoms, a cycloalkoxy group containing from 5 to 8 carbon atoms or an alkylmercapto group containing from 1 to 8 carbon atoms; wherein Alk is a divalent hydrocarbon containing from 1 to 18 carbon atoms; and wherein n is an integer from 2 to 8; said process comprising reacting a compound of the formula Me.sub.2 S.sub.n with a compound of the formula Z-Alk-X; wherein Me represents an alkali metal or an ammonium ion, wherein X represents a halogen selected from the group consisting of fluorine, chlorine, bromine and iodine; wherein said reaction is carried out in the presence of a phase transfer catalyst; wherein said process is carried out in the presence of an aqueous phase containing a salt of the formula MX or M.sub.2 SO.sub.4 ; wherein M represents a metal selected from the group consisting of lithium, sodium, potassium, rubidium and cesium; wherein X represents a halogen selected from the group consisting of fluorine, chlorine, bromine and iodine; and wherein said reaction is carried out in the presence of a filler.