Process for producing .beta.-isopropyl-naphthalene hydroperoxide
AssigneeSumitomo Chemical Company, Limited
InventorsHirokazu Hosaka, Kenji Tanimoto, Hiroshi Yamachika
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Abstract
A process for the continuous production of .beta.-isopropylnaphthalene hydroperoxide comprising oxidizing an isopropylnaphthalene mixture containing .alpha.- and .beta.-isopropylnaphthalene isomers with molecular oxygen or a molecular oxygen containing gas in an oxidation zone and recycling unreacted ispropylnaphthalene recoverd after the oxidation to the oxidation zone, in which the oxidation is carried out by controlling the .alpha.-isopropylnaphthalene content in the isopropylnaphthalene mixture continuously fed to the oxidation zone to about 15% by weight or less.
Claims4
In a process for the continuous production of .beta.-isopropylnaphthalene hydroperoxide comprising oxidizing an isopropylnaphthalene mixture containing .alpha.- and .beta.-isopropylnaphthalene isomers with molecular oxygen or a molecular oxygen containing gas at a temperature of about 70.degree. to 120.degree. C. in an oxidation zone kept neutral to alkaline by adding an alkali selected from hydroxides, carbonates and bicarbonates of sodium and potassium until the isopropylnaphthalene hydroperoxide concentration reaches about 10 to 40% by weight and recycling unreacted isopropylnaphthalene recovered after the oxidation, wherein the .alpha.-isopropylnaphthalene content in the isopropylnaphthalene mixture continuously fed to the oxidation zone is controlled to be about 15% by weight or less.
Dependencies are inferred from the claim text.