Method of preparing methylsiloxanes and methylchloride

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

C - Chemistry, Metallurgy

07

F

260/659, 260/445

C07F 7/18 (2006.01) C07C 17/16 (2006.01) C07F 7/08 (2006.01) C07F 7/21 (2006.01)

Patent

CA 1103267

Abstract of the Disclosure Methylchlorosilanes are reacted in vapor phase with methyl alcohol (MeOH) in contact with a catalyst comprising a methyl pyridinium chloride or other hetero- cyclic aromatic methyl quaternary chloride to give the corresponding methyl siloxane and methyl choride. This method gives extremely low yields of dimethyl ether. Fro example, a mixture of Me2SiCl2 (dimethyldichlorosilane) and MeCH (methylalcohol) vapors is passed through molten methyl pyridinium chloride at 150°C to give cyclic dimethyl polysiloxanes and methyl chloride. The methylsiloxanes produced are useful in production of silicone oils, rubbers, fabric treatments, etc.

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