Process for preparing cyclic methylvinylsiloxanes

Details Process for preparing cyclic methylvinylsiloxanes Process for preparing cyclic methylvinylsiloxanes

C - Chemistry, Metallurgy

07

F

260/445.3

C07F 7/21 (2006.01)

Patent

CA 1044248

ABSTRACT OF THE DISCLOSURE Cyclic sym-tetramethyltetravinyltetrasiloxane is prepared by cracking a methylvinylpolysiloxane hydrolysis pro- duct in admixture with an excess of a high boiling hydrocarbon solvent using heat and potassium hydroxide as the catalyst. The process provides high yields without the need for expensive catalysts and solvents and potentially hazardoux reaction conditions.

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