| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 568385000 | Peroxy containing reactant | 15 |
| 20080214872 | METHOD FOR THE PRODUCTION OF PHENOL AND ACETONE - A method for the production of phenol and acetone from a cumene hydroperoxide mixture comprises: decomposing the cumene hydroperoxide mixture in the presence of a catalyst mixture to form a mixture comprising phenol and acetone, wherein the method further comprises: a) forming the catalyst mixture in a catalyst formation reactor by combining sulfuric acid and phenol in a weight ratio of from 2:1 to 1:1000; b) holding the catalyst mixture in the catalyst formation reactor at a temperature of about 20 to 80° C. for about 1 to 600 minutes; and c) adding the catalyst mixture to the cumene hydroperoxide mixture to form the phenol and acetone mixture. Running the process in this manner reduces the yield of hydroxyacetone and, consequently, improves the quality of the commercial phenol. Moreover, this method reduces consumption of sulfuric acid in comparison with the process in which sulfuric acid is used as catalyst. | 09-04-2008 |
| 20080214873 | METHOD FOR THE PRODUCTION OF PHENOL AND ACETONE - A method for the production of phenol and acetone from a cumene hydroperoxide mixture comprises a first stage and a second stage and at least two serially connected reactors, wherein the first stage comprises decomposition of a cumene hydroperoxide mixture in the presence of a catalyst mixture to form a dicumyl peroxide mixture, and the second stage comprises formation of a phenol and acetone mixture from decomposition of the dicumyl peroxide mixture formed in the first stage, wherein, the first stage further comprises: a) forming a catalyst mixture by combining sulfuric acid and phenol in a weight ratio of from 2:1 to 1:1000 in a catalyst formation reactor, b) holding the catalyst mixture in the catalyst formation reactor at a temperature of about 20 to 80° C. for about 1 to 600 minutes; and, c) adding the catalyst mixture to the cumene hydroperoxide mixture to form the phenol and acetone mixture. The proposed method permits a significant reduction in the yield of hydroxyacetone that causes deterioration in the quality of commercial phenol. | 09-04-2008 |
| 20090187047 | PROCESS FOR PRODUCING PHENOL AND METHYL ETHYL KETONE - A process for producing phenol and methyl ethyl ketone comprises contacting benzene and a C | 07-23-2009 |
| 20090216048 | Process for producing phenol and methyl ethyl ketone - In a process for producing phenol and methyl ethyl ketone, benzene and a C | 08-27-2009 |
| 20090312580 | Process For Producing Sec-Butylbenzene - A process for producing sec-butylbenzene comprises contacting a feed comprising benzene and a C | 12-17-2009 |
| 20100063326 | CATALYSTS COMPRISING A COMBINATION OF OXIDIZED METALS AND A METHOD FOR CLEAVING PHENYLALKYL HYDROPEROXIDES USING THE CATALYSTS - Catalyst comprising a combination of oxidized metals and processes for cleaving phenylalkyl hydroperoxides in the presence of the catalyst. | 03-11-2010 |
| 20100113834 | Method for Producing 3,3,3-Trifluoropropionyl Chloride - There is provided a process for producing 3,3,3-trifluoropropionyl chloride, which is characterized in that 3,3,3-trifluoropropionaldehyde is chlorinated by a chlorinating agent selected from the group consisting of chlorine (Cl | 05-06-2010 |
| 20100185016 | Process for Oxidizing Alkylaromatic Compounds - In a process for producing hydroperoxides, an alkylaromatic compound of general formula (I): | 07-22-2010 |
| 20100317896 | Process For Producing Sec-Butylbenzene - A process for producing sec-butylbenzene comprises feeding reactants comprising benzene and a C | 12-16-2010 |
| 20110152577 | Process for Producing Sec-Butylbenzene - In a process for producing sec-butylbenzene, a C | 06-23-2011 |
| 20110306800 | METHOD FOR THE DECOMPOSITION OF CUMENE HYDROPEROXIDE - An improved method for the production of phenol, acetone and alpha-methyl styrene (AMS) from a cumene hydroperoxide and dimethylbenzyl alcohol (DMBA) mixture is described, wherein 0.5-5% additional water by weight is added prior to the final DMBA dehydration step, carried out in the presence of about 20-400 ppm mineral acid catalyst at 110-150° C. for 0.5 to 40 minutes residence time. The use of additional water allows greater flexibility in maintaining optimum temperature in the second stage over a much broader turndown range with fixed equipment, decreases the residual dicumyl peroxide (DCP) at the yield optimum for a given temperature, and increases the overall yield of AMS at optimum conditions at a given temperature. | 12-15-2011 |
| 20120197045 | METHOD FOR THE DECOMPOSITION OF CUMENE HYDROPEROXIDE - A method of producing phenol, acetone and alpha-methyl styrene. A mixture of cumene hydroperoxide and dimethylbenzyl alcohol is provided. The mixture is subjected to a first stage reaction in the presence of about 0.5 to 1.5 wt. % water and about 20 to 400 ppm sulfuric acid at a reactor pressure of about 450 to 760 mm Hg, a temperature of about 60 to 85° C., and a residence time of 4 to 45 minutes to produce a composition having an acetone to phenol mole ratio of about 1 to 1.5. The composition is subjected to a second stage reaction in the presence of about 0.5 to 3 wt. % additional water with a second stage reactor temperature of about 110 to 150° C. and a residence time of 0.5 to 30 minutes. | 08-02-2012 |
| 20140275630 | Methods And Systems For Separating Acetone And Phenol From One Another - Systems and methods for improving crude acetone column energy efficiency and operation are provided. The method for improving crude acetone column energy efficiency and operation can include introducing a crude acetone including acetone and phenol to a fractionation column and introducing cumene, AMS, or a combination thereof to the fractionation column. The method can include fractionating the crude acetone within the fractionation column to produce an acetone containing overhead and a phenol containing bottoms. The method can also include condensing at least a portion of the acetone containing overhead indirectly with a cool heat transfer medium to provide a condensed crude acetone product and a heated heat transfer medium, wherein the heat transfer medium includes cumene. | 09-18-2014 |
| 20150141700 | PROCESS FOR PRODUCING ALKYLATED AROMATIC COMPOUNDS - A process for producing alkylated aromatic compounds includes pyrolyzing a coal feed to produce a coke stream and a coal tar stream. The coal tar stream is hydrotreated and the resulting hydrotreated coal tar stream is cracked. A portion of the cracked coal tar stream is separated to obtain a fraction having an initial boiling point in the range of about 60° C. to about 180° C., and an aromatics-rich hydrocarbon stream is extracted by contacting the fraction with one or more solvents. The aromatics-rich hydrocarbon stream is contacted with an alkylating agent to produce an alkylated aromatic stream, or the aromatics-rich hydrocarbon stream is reacted with an aliphatic compound or methanol in the presence of a catalyst to produce a methylated aromatic stream. The alkylated aromatic stream, the methylated aromatic stream, or both are separated into at least a benzene stream, a toluene stream, and a xylenes stream. | 05-21-2015 |
| 20160251289 | USE OF ALKANE SULFONIC ACID FOR PREPARING PHENOLIC ALCOHOL | 09-01-2016 |
