Process for producing propylene oxide
AssigneeSumitomo Chemical Company, Limited
InventorsNoriaki Oku, Tateo Seo
Life of this patent
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Abstract
A process for producing propylene oxide comprising the following steps: oxidation step: a step of obtaining isopropylbenzene hydroperoxide by oxidizing isopropylbenzene; epoxidation step: a step of obtaining propylene oxide and cumyl alcohol by reacting propylene with isopropylbenzene hydroperoxide obtained in the oxidation step; hydrogenolysis step: a step of obtaining isopropylbenzene by hydrogenolyzing cumyl alcohol obtained in the epoxidation step, and recycling this isopropylbenzene to the oxidation step as a raw material of the oxidation step; and organic acid removal step: a step of removing an organic acid out of the system in at least one point in said steps or between said steps.
Claims9
A process for producing propylene oxide comprising the following steps:
- oxidation step:
- a step of obtaining isopropylbenzene hydroperoxide by oxidizing isopropylbenzene;
- epoxidation step:
- a step of obtaining propylene oxide and cumyl alcohol by reacting propylene with isopropylbenzene hydroperoxide obtained in the oxidation step;
- hydrogenolysis step:
- a step of obtaining isopropylbenzene by hydrogenolyzing cumyl alcohol obtained in the epoxidation step, and recycling this isopropylbenzene to the oxidation step as a raw material of the oxidation step;
- and
- organic acid removal step:
- a step of removing an organic acid out of the system in at least one point in said steps or between said steps.
Dependencies are inferred from the claim text.