C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/642.5
C07C 409/12 (2006.01) C07C 37/08 (2006.01) C07C 39/08 (2006.01)
Patent
CA 1090375
Abstract of the Disclosure The invention relates to an improved process for the liquid phase oxidation of m-diisopropylbenzene which affords in high yield an oxidation product containing a major portion of m-diisopropylbenzene dihydroperoxide and minor portion of 2-hydroxy-2-propyl-.alpha.,.alpha.-dimethylbenzyl hydroperoxide. The process comprises oxidizing dihydroperoxide which comprises oxidizing m- diisopropylbenzene in the liquid phase with molecular oxygen under alkaline conditions; wherein the oxidation is carried out under conditions (A), (B) and (C) below, (A) under conditions which meet (i), (ii), (iii) and (iv) below, (i) 0 ? x ? 140 (ii) y ? 80 (iii) -0.05X + 110 ? y ? -0.15x + 95 wherein 0 ? x ? 100 (iv) y ? -0.25x + 130 wherein 100 < x ? 140 in which x represents the absolute value of the concentration of hydroperoxides in the oxidation product in % by weight calculated as m-diisopropylbenzene monohydroperoxide, and y represents the absolute value of the reaction temperature in degrees centigrade, (B) until x reaches at least 120, and (C) so that the reaction temperature at 100< x ? 140 is lower than the reaction temperature at the start of the reaction (x = 0).
314803
Hashimoto Isao
Imai Ichiro
Nambu Hirohiko
Mitsui Petrochemical Industries Ltd.
Smart & Biggar
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