Method of preparing polysulphidic silyl ethers

Details Method of preparing polysulphidic silyl ethers Method of preparing polysulphidic silyl ethers

1997-03-10

1998-06-23

Shaver, Paul F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

C07F 708

Patent

active

057707545

ABSTRACT:
Polysulphidic silyl ethers are prepared by the reaction of metal polysulphides with halogenoalkylsilanes, in that, starting from hydrated metal sulphides and/or metal polysulphides, these are first dehydrated in the presence of a non water mixable organic solvent and in the presence of an emulsifier at temperatures of 90.degree. to 220.degree. C., optionally in vacuum or under pressure, if metal sulphides are used these are subsequently reacted with sulphur to form metal polysulphides, and thereafter the dehydrated metal polysulphides obtained are converted into the corresponding polysulphidic silyl ethers with halogenoalkylsilanes, optionally in the presence of polyhalogen compounds, at temperatures of 20.degree. to 150.degree. C.

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