Patent ID: 6274755
Filing Date: 2001-08-14
Classification: C07F

Abstract:
A process for the production of polysulfide silane compounds of the general formula (I)Z-R.sup.1 -S.sub.n -R.sup.1 -Z, (I)in whichR.sup.1 represents branched or unbranched alkyl groups having 1 to 8 C atoms and while may be interrupted by O, N or S atoms or alkylaromatics of the type (CH.sub.2).sub.p Ph(CH.sub.2).sub.p having 8 to 14 C atoms, wherein p is an integer from 1 to 4 and n is an integer from 1 to 4, andZ represents residues of the type (R.sup.2 O).sub.3-m R.sup.2.sub.m Si, in which the residues R.sup.2 may be identical or different and consist of branched or unbranched alkyl residues having 1 to 6 C atoms and m is 0, 1 or 2, comprising:reacting silylalkyl halides of the general formula (II)ZR.sup.1 X, (II)in which X corresponds to Cl, Br or I and Z and R.sup.1 have the above-stated meanings, with alkali metal polysulfides of the general formula (III)M.sub.2 S.sub.n, (III)whereinM denotes the alkali metals Na and K and n has the above-stated meaning,wherein the alkali metal polysulfides M.sub.2 S.sub.n are obtained by:PA