| 摘要 |
A process for the production of bis(silylorganyl)-polysulphanes of the formula(R1R2R3SiR4)2Sx(I)in which R1, R2, R3: can be identical or different from each other, and are branched and unbranched alkyl and/or is an alkoxy groups with 1 to 8 cations, wherein at least one alkoxy group is present, aryl residues, in particular phenyl, toluyl, benzyl; R4: means a divalent alkylidene residue having a chain length of 1-8 C atoms, or -(CH2)n-C6H4-(CH2)n-(n=1 to 4); by reacting haloalkylalkoxysilanes or haloalkoxysilanes of the formulaR1R2R3SiR4X(II) with a polysulphide of the formulaM2Sx(III).In a first stage of the reaction, dehydrated polysulphide is obtained by reacting a sulphide hydrate containing water of crystallization with sulphur under a vacuum at a temperature of 60 DEG to 300 DEG C.
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