Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Masaru Ishino0
Junpei Tsuji0
Date of Patent
June 3, 2008
0Patent Application Number
105728760
Date Filed
September 15, 2004
0Patent Primary Examiner
Patent abstract
A process for producing propylene oxide, which comprises the following steps:oxidation step: a step of obtaining cumene hydroperoxide by oxidizing cumene;epoxidation step: a step of obtaining propylene oxide and cumyl alcohol by reacting cumene hydroperoxide obtained in the oxidation step with propylene; andconverting step: a step of converting cumyl alcohol obtained in the epoxidation step into cumene in the presence of a solid catalyst and recycling said cumene to the oxidation step,wherein a concentration of methylbenzyl alcohol in a liquid containing cumene recycled to the oxidation step, is 1% by weight or less.
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