Continuous preparation of mixtures containing cyclohexyl...

Details Continuous preparation of mixtures containing cyclohexyl... Continuous preparation of mixtures containing cyclohexyl...

C - Chemistry, Metallurgy

07

C

260/583.2, 260/6

C07C 35/08 (2006.01) C07C 29/50 (2006.01) C07C 45/33 (2006.01) C07C 49/603 (2006.01) C07C 409/14 (2006.01)

Patent

CA 1262359

Abstract of the Disclosure: Mixtures containing cyclohexyl hydroperoxide, cyclohexanol and cyclohexanone and having a high cyclohexyl hydroperoxide content are prepared by a continuous process which comprises the oxidation of cyclo- hexane with molecular oxygen, or with a gas containing this, in the liquid phase, in which 1. in a first stage, molecular oxygen is dissolved in cyclohexane by bringing the latter into contact with molecular oxygen, or with a gas containing this, at from 10 to 110°C and under superatmospheric pressure, and 2. in a second stage, the cyclohexane containing dis- solved molecular oxygen is passed through an elongated, tubular reaction zone at from 130 to 250°C and under superatmospheric pressure, virtually with plug flow and without the formation of a gas phase, the residence time being between a) the time required for the consumption of 50% of the amount of dissolved molecular oxygen and b) 1.2 times the time required for the consumption of 99.9% of the dissolved molecular oxygen.

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