Method of preparing methylsiloxanes and methylchloride

Details Method of preparing methylsiloxanes and methylchloride Method of preparing methylsiloxanes and methylchloride

1977-10-27

1978-08-22

Shaver, Paul F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07F 708

Patent

active

041088824

ABSTRACT:
Methylchlorosilanes are reacted in vapor phase with methyl alcohol (MeOH) in contact with a catalyst comprising a methyl pyridinium chloride or other heterocyclic aromatic methyl quaternary chloride to give the corresponding methyl siloxane and methyl chloride. This method gives extremely low yields of dimethyl ether. For example a mixture of Me.sub.2 SiCl.sub.2 (dimethyldichlorosilane) and MeOH (methylalcohol) vapors is passed through molten methyl pyridinium chloride at 150.degree. C to give cyclic dimethyl polysiloxanes and methyl chloride.

REFERENCES:
patent: 3432538 (1969-03-01), Curry
patent: 3484468 (1969-12-01), Curry
patent: 3576023 (1971-04-01), Curry
patent: 3803195 (1974-04-01), Nitzsche et al.
patent: 4032557 (1977-06-01), Spork et al.

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