Process for preparing organosiloxanes

Details Process for preparing organosiloxanes Process for preparing organosiloxanes

C - Chemistry, Metallurgy

07

C

402/26, 260/659,

C07C 17/16 (2006.01) C07F 7/08 (2006.01) C07F 7/18 (2006.01) C07F 7/21 (2006.01) C08G 77/06 (2006.01)

Patent

CA 1050036

ABSTRACT OF THE DISCLOSURE An improved process is provided for preparing organosiloxanes and alkyl halides by passing organohalosilanes and alkanols having 1 and/or 2 carbon atoms through at least one layer of packing material which is maintained at a temperature of from 60 to 150°C. The improve- ment comprises (1) recycling from 1 to 6 liters of an aqueous phase separated from the organosiloxanes emerging from the layer or layers of packing material for each mol of organohalosilane introduced into the layer or layers of packing material and (2) reacting the organosiloxane separated from the aqueous phase with from 2 to 10 percent by weight based on the weight of the organosiloxane with the same organohalosilane which is passed through the layer or layers of packing material. This process permits greater space-time yield economy.

251916

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