| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 568800000 | Preparing by oxidation | 8 |
| 20080221369 | Process for the preparation of substituted phenols - A substituted phenolic compound is prepared by oxidizing a substituted diarylethane compound with oxygen in the presence of a nitrogen-containing cyclic compound, and treating the oxidized product with an acid. The nitrogen-containing cyclic compound includes, as a constituent of its ring, a skeleton represented by following Formula (I): | 09-11-2008 |
| 20090005608 | HIGH SHEAR PROCESS FOR CYCLOHEXANOL PRODUCTION - Use of a high shear mechanical device incorporated into a process for the production of cyclohexanol is capable of decreasing mass transfer limitations, thereby enhancing the cyclohexanol production process. A system for the production of cyclohexanol from air oxidation of cyclohexane, the system comprising a high shear device, the outlet of the high shear device fluidly connected to the inlet of a reactor; the high shear device capable of providing a dispersion of air bubbles within a liquid comprising cyclohexane, the bubbles having an average bubble diameter of less than about 100 μm. | 01-01-2009 |
| 20110178342 | PROCESS FOR PRODUCING CUMENE - A process is described for producing cumene comprising contacting a feed stream comprising benzene and a further feed stream comprising isopropanol or a mixture of isopropanol and propylene in the presence of an alkylation catalyst comprising at least a molecular sieve of the MCM-22 family in an alkylation zone under alkylation conditions of at least partial liquid phase and with a water concentration in the liquid phase of at least 50 ppm to react at least part of said isopropanol and benzene to produce an effluent stream containing cumene. | 07-21-2011 |
| 20120088937 | METHOD FOR PRODUCING CUMENE - One exemplary embodiment can be a method for processing polyisopropylbenzene for producing cumene. The method can include passing a transalkylation feed stream to a transalkylation zone, and passing a reaction product to a separation zone. Typically, the separation zone produces a stream including di-isopropylbenzene, tri-isopropylbenzene, and one or more heavy compounds. Moreover, the stream may include at least about 0.7%, by weight, of the one or more heavy compounds based on the weight of the di-isopropylbenzene, tri-isopropylbenzene, and the one or more heavy compounds in the stream, and at least a portion of the stream is recycled to the transalkylation zone. | 04-12-2012 |
| 20140296581 | Process for Producing Phenol - In a process for producing phenol, cyclohexylbenzene is contacted with oxygen in the presence of an oxidation catalyst comprising a cyclic imide under oxidation conditions effective to produce a product comprising cyclohexylbenzene hydroperoxide and unreacted cyclic imide catalyst. At least a portion of the product is contacted with a cleavage catalyst under conditions effective to convert at least a portion of the cyclohexylbenzene hydroperoxide into a second product comprising further unreacted cyclic imide catalyst, phenol, and cyclohexanone. A portion of the further unreacted cyclic imide catalyst may then be removed from the second product and optionally recycled back to the oxidation step. | 10-02-2014 |
| 568802000 | Molecular oxygen utilized | 2 |
| 20110092746 | PROCESS FOR THE PREPARATION OF PHENOL - A process is described for the preparation of phenol by the hydrodeoxygenation of polyhydroxylated benzene derivatives or by the selective hydroxylation of benzene under depletive conditions, characterized in that the above-mentioned reactions are carried out in the presence of a catalyst based on multi component metal oxides comprising at least one metal selected from the groups VB, VIB, VIII, IB, IIB, IVA, VA. | 04-21-2011 |
| 20130096351 | PROCESS FOR THE SELECTIVE HYDROXYLATION OF BENZENE WITH MOLECULAR OXYGEN - The present invention provides an improved process for the selective hydroxylation of benzene. The process provides a direct single step selective vapour phase hydroxylation of benzene to phenol using molecular oxygen (air) over Cu—Cr oxide catalysts. The process provides benzene conversion of 10 to 45% and selectivity for phenol up to 100%. | 04-18-2013 |
| 568803000 | Peroxide or peracid utilized | 1 |
| 20080234524 | Process for the liquid phase selective hydroxylation of benzene - The present invention provides an improved process for the liquid phase selective hydroxylation of benzene. The process provides a direct single step selective liquid phase hydroxylation of benzene to phenol using environment friendly green oxidant, hydrogen peroxide, and vanadyl pyrophosphate as the catalyst under mild reaction conditions. The process provides benzene conversion of 30-70% and selectivity for phenol of up to 100%. | 09-25-2008 |
