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| Number | Title | Issue Date |
| 7888537 | Solid acid catalyst and process for decomposition of cumene hydroperoxide The present invention provides a process for decomposing a cumene hydroperoxide to produce phenol and acetone. The process utilizes a solid catalyst that can be non-layered or layered. The process includes: (1) introducing a process stream containing cumene hydroper... | 02/15/2011 |
| RE40668 | Method for the decomposition of cumene hydroperoxide by acidic catalyst to phenol and acetone A method for the enhanced decomposition of cumene hydroperoxide by acidic catalyst to phenol and acetone which comprises decomposing cumene hydroperoxide in a non-isothermal manner in the presence of excess acetone whereby the molar ratio of acetone to phenol in a d... | 03/17/2009 |
| 7396961 | Process for catalytically decomposing organic hydroperoxides The present invention relates to a process for decomposing organic hydroperoxides in the presence of a catalyst. It provides a process for decomposing organic hydroperoxides in the presence of a catalyst into a mixture of alcohols and ketones, in which the catalyst ... | 07/08/2008 |
| 7326815 | Selective oxidation of alkylbenzenes The present invention relates to a process for producing phenol and a ketone of general formula R1COCH2R3 (I), in which R1 and R2 each independently represent an alkyl group having from 1 to 4 carbon atoms, said... | 02/05/2008 |
| 7312365 | Process for low temperature cleavage of an oxidation mixture comprising hydroperoxides A process for cleaving an oxidation product comprising s-butyl benzene hydroperoxide and/or cumene hydroperoxide which reduces the production of non-recoverable by-products from dimethylbenzyl alcohol (DMBA) and ethyl methyl benzyl carbinol (EMBA). ... | 12/25/2007 |
| 7282613 | Process for producing phenol and methyl ethyl ketone A process for producing phenol and methyl ethyl ketone (MEK). ... | 10/16/2007 |
| 7282192 | Mixed metal oxide containing sulfur The invention relates to a composition of matter comprising at least one metal from Group 3, at least one metal from Group 4, sulfur and oxygen, particularly useful as a catalyst for ether decomposition to alkanols and alkenes. ... | 10/16/2007 |
| 7173158 | Mixed metal oxide containing sulfur The invention relates to a composition of matter comprising at least one metal from Group 3, at least one metal from Group 4, sulfur and oxygen, particularly useful as a catalyst for ether decomposition to alkanols and alkenes. ... | 02/06/2007 |
| 7154010 | Integrated process for the production of bisphenol A from cumene hydroperoxide Use of a specific combination of catalysts for the first and second steps of the process for the conversion of CHP to BPA provides high yields of BPA and low impurity yields, without a requirement for the intermediate purification steps. In the first step, CHP is cl... | 12/26/2006 |
| 7141700 | Decomposition of cumene hydroperoxide A process for the decomposition of a cumene oxidation product mixture to produce phenol and acetone with reduced by-product formation by introducing the cumene oxidation mixture into an inlet of a decomposing vessel containing indirect heat exchange surfaces wherein... | 11/28/2006 |
| 7141701 | Decomposition of cumene hydroperoxide A process for decomposing a cumene oxidation product mixture containing cumene hydroperoxide (CHP) and dimethylphenolcarbinol (DMPC) to produce phenol and acetone. ... | 11/28/2006 |
| 7141703 | Process for producing phenol and ketone using neutralizing base Improved processes for oxidizing alkylbenzene(s) to produce phenol and ketone product(s) using neutralizing base. ... | 11/28/2006 |
| 7126029 | Method and apparatus for in-process handling of cumene hydroperoxide with improved safety The present invention provides a method and apparatus for in-process handling of concentrated cumene hydroperoxide (“CHP”) in a process for the production of phenol and acetone by the decomposition of CHP. The method of the present invention makes use of a tube ... | 10/24/2006 |
| 7109385 | Process for producing phenol A process for producing a phenol product generally comprises a first step comprising reacting in a first reactor a feed stream comprising cumene hydroperoxide and water with an acid catalyst to produce an effluent comprising the phenol product, acetone, and at least... | 09/19/2006 |
| 7102037 | Selective decomposition of ethers A process for selectively converting a dialkyl ether to the corresponding alkene and alkanol comprises contacting a feed containing at least one dialkyl ether with a catalyst comprising a mixed metal oxide which comprises at least one metal selected from Group 4 of ... | 09/05/2006 |
| 7084309 | Process for the synthesis of phenol and acetone This invention refers to a process for the synthesis of phenol and acetone starting from cumene hydroperoxide, and to a plant specifically developed for performing this process. More in particular, this invention refers to a process for the synthesis of phenol and a... | 08/01/2006 |
| 6984761 | Co-production of phenol, acetone, α-methylstyrene and propylene oxide, and catalyst therefor A process is disclosed for producing α-methylstyrene, acetone, and phenol wherein the amount of α-methylstyrene produced may be controlled by selectively converting a portion of the cumene hydroperoxide to dimethyl phenyl carbinol, the hydrated form of α-methylst... | 01/10/2006 |
| 6965056 | Removal of salts in the manufacture of phenolic compound There is provided a process for the manufacture of phenolic compounds by separating a neutralized aralkyl hydroperoxide cleavage mass stream containing salts of neutralization into a crude ketone stream and a crude phenolic stream containing the salts of neutralizat... | 11/15/2005 |
| 6956136 | Method of producing cumene hydroperoxide The specification provides a method of producing cumene hydroperoxide by continuous aqueous-emulsion oxidation at a high temperature and pressure in a cascade of reactors, wherein the process is conducted in the presence of a mixture of an aqueous solution of an amm... | 10/18/2005 |
| 6939995 | Process for the preparation of isopropanol Process for the preparation of isopropanol is provided, wherein a benzene-containing feed of acetone is hydrogenated to obtain isopropanol and hydrogenation products of benzene. Combination of such a process with a process for the preparation of phenol and co... | 09/06/2005 |
| 6888035 | Hydrogenation of cleavage effluents in phenol production A method for producing phenol is disclosed which includes oxidizing cumene to form cumene hydroperoxide and acid cleavage to form cumene, phenol, acetone, and various byproducts, including alpha methylstyrene, followed by a subsequent hydrogenation of at least a par... | 05/03/2005 |
| 6875898 | Process for preparing phenols The present invention relates to a process for preparing phenols by adding an aqueous base to the reaction product from the acid-catalyzed cleavage of alkylaryl hydroperoxides while maintaining a homogeneous phase prior to the work-up of the product. ... | 04/05/2005 |
| 6841704 | Process for preparing cumene which is used in the preparation of phenol Disclosed is a method for the preparation of cumene by reacting isopropanol or a mixture of isopropanol and propene with benzene in the presence of a β-zeolite catalyst having a SiO2/Al2O3 molar ratio greater than 10:1 that can be i... | 01/11/2005 |
| 6825387 | Low sodium cleavage product Washed cleavage product (WCP) in a phenol manufacturing process is treated to remove sodium ions. The WCP is contacted with a cation exchange resin in hydrogen form, and then with anion exchange resin in free base or hydroxide form, to produce a WCP essentially free... | 11/30/2004 |
| 6800787 | Catalyst for acidolysis of aromatic hydroperoxy compound and process for producing aromatic hydroxy compound using the same A catalyst for acidolysis of an aromatic hydroperoxy compound, containing little scale, prepared by gasifying liquid sulfuric anhydride and dissolving gasified sulfuric anhydride in a ketone solvent, and a process for producing a hydroxy aromatic compound using the ... | 10/05/2004 |
| 6680414 | Process for the hydrogenation of hydroformylation mixtures The present invention provides a process, which includes: in a homogeneous liquid phase including water, and over a fixed-bed catalyst, continuously hydrogenating at least one hydroformylation product obtained from a hydroformylation of one or more C | 01/20/2004 |
| 6630608 | Process for preparing phenols The present invention relates to a process for preparing phenols, in which the pH of the reaction product from the acid-catalyzed cleavage of alkylaryl hydroperoxides is set to a value of at least 8 at a temperature of at least 100° C. prior to the work-... | 10/07/2003 |
| 6586640 | Decomposition of organic hydroperoxides in the presence of a particulate catalyst containing highly fluorinated polymer having sulfonic acid groups and process for the manufacture of bisphenol A A process for the manufacture of a hydroxy-substituted organic compound comprising decomposing an organic hydroperoxide, preferably a compound of the formula Ar--C(CH3)2 O2 H, wherein Ar is a substituted or unsubstituted m... | 07/01/2003 |
| 6583326 | Process for separating phenol from a mixture comprising at least hydroxyacetone, cumene, water and phenol Phenol is separated from a mixture containing hydroxyacetone, cumene, water and phenol, by fractionating the mixture in a process with a fractional distillation step and a phase separation step to provide a single phenol fraction containing less than 300 ... | 06/24/2003 |
| 6576798 | Method and system for purifying cumene hydroperoxide cleavage products A system for purifying a cumene hydroperoxide cleavage product mixture comprises a cumene hydroperoxide cleavage product mixture feed containing impurities in fluid communication with an aqueous alkaline solution feed; the cumene hydroperoxide cleavage pr... | 06/10/2003 |
| 6573408 | System and method for purifying cumene hydroperoxide cleavage products A system for purifying a cumene hydroperoxide cleavage product mixture comprises a cumene hydroperoxide cleavage product mixture feed containing impurities in fluid communication with an aqueous alkaline solution feed; the cumene hydroperoxide cleavage pr... | 06/03/2003 |
| 6555719 | Process for the thermal after-treatment of cleavage product from the acid-catalyzed cleavage of cumene hydroperoxide The cleavage product from the acid-catalyzed cleavage of cumene hydroperoxide into phenol and acetone is subjected to thermal after-treatment by a process, which comprises heating the cleavage product in a reactor, wherein the heat supplied for the therma... | 04/29/2003 |
| 6444861 | Process for the cleavage of alkylaryl hydroperoxides A process for the cleavage of alkylaryl hydroperoxides includes steps for producing a mixture of a concentrate that contains at least one alkylaryl hydroperoxide to be cleaved and a cleavage product obtained from the cleavage of an alkylaryl hydroperoxide... | 09/03/2002 |
| 6441252 | Apparatus for producing phenol using reactive distillation An apparatus for producing phenol and acetone from cumene hydroperoxide comprises a reactive distillation column comprising at its upper portion a distillation column and at its lower portion a catalyst bed.... | 08/27/2002 |
| 6441251 | Production of phenol A process for producing phenol and acetone from cumene hydroperoxide is described in which the cumene hydroperoxide is contacted with a solid-acid catalyst comprising an inorganic, porous, crystalline material, designated as M41S, exhibiting, after calcin... | 08/27/2002 |
| 6433232 | Process for producing hydroxyaromatic compound A process for producing a hydroxyaromatic compound by oxidizing an alkyl group-substituted aromatic hydrocarbon to a hydroperoxyaromatic compound and decomposing the hydroperoxyaromatic compound to the hydroxyaromatic compound in which the step of neutral... | 08/13/2002 |
| 6410804 | Production of phenol using reactive distillation A process for producing phenol and acetone from cumene hydroperoxide comprises: i) introducing a cumene hydroperoxide feed into a reactive distillation column comprising at its upper portion a distillation column and at its lower portion a catalyst bed, a... | 06/25/2002 |
| 6331654 | Method of production of product acetone of high stability to oxidation Disclosed is a method for the production of product acetone of higher oxidation stability where the product acetone is produced by a multi-step rectification process in the presence of alkali catalyst. The embodiments of the method of present invention ut... | 12/18/2001 |
| 6329553 | Selective thermal and photooxidation of hydrocarbons in zeolites by oxygen A process for a combined selective thermal oxidation and photooxidation of hydrocarbons adsorbed onto zeolite matrices. A highly combined selective thermal oxidation and photooxidation of unsubstituted or alkyl substituted alkanes, alkenes, aromatics and ... | 12/11/2001 |
| 6307112 | Process for preparing phenol and acetone by acid-catalyzed cleavage of cumene hydroperoxide Phenol and acetone are prepared by a process comprising homogeneously cleaving cumene hydroperoxide in the presence of acid catalyst in a cleavage apparatus comprising at least one reactor having plug flow characteristics thereby producing a cleavage prod... | 10/23/2001 |
