PROCESS FOR PRODUCING PROPYLENE OXIDE

WIPO Patent Application WO/2005/028460

A1

A process for producing propylene oxide, characterized by comprising the following steps and conducting the distillation in the propylene oxide separation step in such a manner that the total concentration of cumene and ethylbenzene in the distillate from the distillation column is in the range of 0.005 to 5 wt.%. Oxidation step: step in which cumene is oxidized to obtain cumene hydroperoxide Epoxidization step: step in which the cumene hydroperoxide obtained in the oxidation step is reacted with propylene to obtain propylene oxide and cumyl alcohol Propylene recovery step: step in which the unreacted propylene is recovered from the reaction mixture obtained in the epoxidization step Propylene oxide separation step: step in which the liquid resulting from the recovery of the unreacted propylene in the propylene recovery step is distilled to separate propylene oxide

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OKU NORIAKI (JP)
KATAO MASAAKI (JP)

PCT/JP2004/013600

March 31, 2005

September 10, 2004

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SUMITOMO CHEMICAL CO (JP)
OKU NORIAKI (JP)
KATAO MASAAKI (JP)

C07D301/16; C07D301/14; C07D303/04; (IPC1-7): C07D301/19; C07D303/04

JP2003183265A	2003-07-03
JPH09117601A	1997-05-06

Enomoto, Masayuki c/o Sumitomo Chemical Intellectual Property Service (Limited 5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 50, JP)

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