Patent ID: 9464047
Filing Date: 2016-10-11
CPC Classification: C07C

Claim Text:
1. A process for making a cyclohexylbenzene hydroperoxide product, the process comprising: (I) providing a first liquid mixture comprising cyclohexylbenzene and cyclohexylbenzene hydroperoxide; (II) forming a second vapor/liquid mixture stream and a second liquid stream by passing the first liquid mixture through a first thin-film evaporation device under a first absolute pressure of at most 80 kPa; (III) separating the second vapor/liquid mixture stream in a first separation zone under a second absolute pressure of at most 80 kPa to obtain a third liquid stream and a third vapor stream; (IV) condensing a part of the third vapor stream to obtain a fourth liquid stream and a fourth vapor stream; (V) recycling at least a part of the second, third, and fourth liquid streams to the first thin-film evaporation device; and (VI) obtaining the cyclohexylbenzene hydroperoxide product from the third liquid stream and/or the second liquid stream, wherein the cyclohexylbenzene hydroperoxide product has a higher concentration of cyclohexylbenzene hydroperoxide compared to the first liquid mixture.