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9035106 Method for the hydroxylation of phenols and phenol ethers  
The present invention relates to a method for the hydroxylation of phenols and phenol ethers by means of hydrogen peroxide. The invention specifically relates to a method for the hydroxylation of...
8946488 Method for hydroxylating phenols and phenol ethers  
A method for hydroxylating phenols and phenol ethers using hydrogen peroxide and specifically, a method for hydroxylating phenol using hydrogen peroxide. The method for hydroxylating a phenolic...
8946484 Method for producing phenol and/or cyclohexanone  
In a process for producing phenol and cyclohexanone a feed comprising cyclohexylbenzene hydroperoxide and water in an amount from 1 to 15,000 ppm, based upon total weight of feed, is contacted...
8791308 Process for the hydroxylation of phenols and of phenol ethers  
A process for the hydroxylation of phenols and of phenol ethers by hydrogen peroxide is described. More particularly a process for the hydroxylation of phenol by hydrogen peroxide is described....
8680355 Olefin production process  
A novel olefin production process of the invention can be established as an industrial and practical process of producing an olefin with high selectivity by directly reacting a ketone and hydrogen...
8658835 Oxidation of hydrocarbons  
In a process for oxidizing a hydrocarbon to a corresponding hydroperoxide, alcohol, ketone, carboxylic acid or dicarboxylic acid, the hydrocarbon is contacted with an oxygen-containing gas in the...
8598388 Process for the preparation of phenol and cyclohexanone  
Process for the preparation of phenol and cyclohexanone which comprises: a. the synthesis of cyclohexylbenzene by the hydro-alkylation of benzene by contact with hydrogen or the alkylation of...
8487138 Oxidation of hydrocarbons  
In a process for oxidizing a hydrocarbon to a corresponding hydroperoxide, alcohol, ketone, carboxylic acid or dicarboxylic acid, the hydrocarbon is contacted with an oxygen-containing gas in the...
8440864 Process for producing sec-butylbenzene  
In a process for producing sec-butylbenzene, a C4 olefinic hydrocarbon feedstock comprising isobutene and at least one n-butene is contacted with methanol and/or water in the presence of an acid...
8436213 Process for producing phenol and methyl ethyl ketone  
In a process for reducing the level of tert-butylbenzene in a mixed butylbenzene feed comprising tert-butylbenzene and sec-butylbenzene, the feed is contacted under dealkylation conditions with a...
7858832 Process for producing phenol and methyl ethyl ketone  
A process for producing sec-butylbenzene comprises contacting a feed comprising benzene and a C4 alkylating agent under alkylation conditions comprising a temperature of about 110° C. to about...
7834218 Process for producing phenol and methyl ethyl ketone  
A process for producing phenol and methyl ethyl ketone comprises contacting benzene and a C4 alkylating agent under alkylation conditions and in the presence of an alkylation catalyst comprising...
7812196 Process for producing phenol and methyl ethyl ketone  
A process for producing phenol and methyl ethyl ketone comprises contacting benzene and a C4 olefin under alkylation conditions and in the presence of an alkylation catalyst to produce an...
7482493 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...
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...
7166752 Decomposition of cumene oxidation product  
A process for decomposing a cumene oxidation product mixture containing cumene hydroperoxide (CHP) and dimethylphenyl carbinol (DMPC) to produce phenol, acetone and alpha-methyl styrene (AMS) with...
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...
6960698 Method for treating tar  
A method for treating tar separated from a liquid containing an aromatic hydroxybenzene obtained by acidolysis of a liquid containing an aromatic hydroperoxide, which comprises dissolving the tar...
6852893 Method for oxidizing hydrocarbons  
The invention relates to a method for oxidizing substrates such as hydrocarbons, waxes or soot. The method involves the use of a compound of formula (I) in which: R1 and R2 represent H, an...
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...
6720462 Method for producing aromatic alcohols, especially phenol  
The invention relates to a process for preparing phenol derivatives by catalytic oxidation of an aromatic hydrocarbon to the hydroperoxide and subsequent cleavage of the hydroperoxide to give the...
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)2O2H, wherein Ar is a...
6486365 Production and purification of phenol: hydroxyacetone removal by hydrotalcite  
A process for converting carbonyl-type impurities contained in a phenolic solvent to high-boiling derivatives is provided by contacting the phenolic solvent with a hydrotalcite-type material...
6452056 Process for the preparation of fluorobenzyl derivatives  
A fluorine-containing benzonitrile derivative (formula 1) is subjected to a reduction reaction to obtain a fluorine-containing benzylamine derivative (formula 2), and the amino group in said...
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...
6350921 Process for the production of a dihydroxybenzene and dicarbinol from diisopropylbenzene  
Improved methods for the simultaneous production of dihydroxybenzene and dicarbinol from diisopropylbenzene are provided. These methods provide for continuous and simultaneous production of...
6281400 Process for preparation of a catalytic microcomposite from a silicate and a highly fluorinated ion exchange resin  
The present invention relates to a process for preparing a microcomposite comprising a highly fluorinated ion-exchange polymer containing pendant sulfonate functional groups, said polymer existing...
5998677 Process for the production of phenol  
The improved process for producing phenol, acetone and α-methylstyrene in the cumene-phenol process comprising cumene hydroperoxide, cumene and dimethylphenylcarbinol in the presence of sulfuric...
5714641 Hydroxylation of phenolic compounds  
Phenolic compounds, e.g., phenol, are hydroxylated, preponderantly into the para-isomer, e.g., hydroquinone, by reaction with hydrogen peroxide in the presence of an effective amount of a strong...
5502259 Method for purification of phenol  
The invention relates to a method for purification of phenol and specifically to a method for purification of phenol produced within the process of joint phenol and acetone production by cumene...
5476968 N,N'-bis(p-hydroxymethylphenyl)benzidine compounds and method for preparing the same  
A N,N'-bis(p-hydroxymethylphenyl)benzidine compound having the following formula (I): ##STR1## wherein R1 represents a hydrogen atom, a methyl group or a methoxy group; R2 represents an alkyl...
5475157 Process for producing aromatic hydroxylic compound  
There is disclosed a process for producing an aromatic hydroxylic compound by acid decomposition of a hydroperoxide having the general formula (I) ##STR1## wherein Ar represents an aromatic...
5430200 Process for producing phenol from cumene  
The present invention provides in a particular embodiment an improvement in the process for producing phenol by the acid-catalyzed cleavage of cumene hydroperoxide (CHP). The reactant stream fed...
5414154 Phenol with low levels of methylbenzofuran  
A process for the reduction of methylbenzofuran (MBF) impurities in phenol obtained from the decomposition product of cumene hydroperoxide requires treating the phenol to reduce the level of...
5364983 Process for the preparation of aromatic polyhydroxy compounds  
The present invention relates to a process for the preparation of aromatic polyhydroxy compounds, by reacting an aromatic hydroxyaldehyde with hydrogen peroxide, with or without the addition of a...
5138104 Process for producing dihydric phenols  
A process for producing dihydric phenols is disclosed. The process comprises reacting a phenol with a ketone peroxide or a combination of a ketone and hydrogen peroxide in the presence of a...
5017729 Phenol preparation process and propylene recovery therefrom  
Phenol is produced in a recycle manner by (a) reacting benzene with propylene to synthesize cumene, (b) oxidizing the cumene of step (a) into cumene hydroperoxide, (c) acid cleaving cumene...
5015786 Preparation of cumene through alkylation of an aromatic compound and preparation of phenol through cumene  
In a first form, a process is provided for preparing phenol by converting acetone by-produced by the cumene process into isopropanol, and alkylating benzene with the isopropanol and optional...
5003109 Destruction of acetone peroxides  
The acetone peroxides contained in oxidate reaction mixtures thereof, e.g., those resulting from phenol syntheses, are hazardous and explosive compounds when present in the solid state, and are...
4933506 Process for the production of dihydric phenols  
A process for the production of dihydric phenoles by oxidizing diisopropylbenzenes, which comprises oxidizing diisopropylbenzenes with molecular oxygen to obtain a reaction product mixture (A)...
4929771 Process for the preparation of alkyl-substituted phenols or naphthols  
Process for the preparation of alkyl-substituted phenols or naphthols by oxidizing the corresponding dialkylbenzenes or dialkylnaphthalenes, respectively, at elevated temperatures of, for example,...
4898995 Method for production of phenol/acetone from cumene hydroperoxide  
A method is disclosed for the synthesis of phenol and acetone by decomposition over a heterogeneous catalyst from the group consisting of a heteropoly acid on an inert support or an ion exchange...
4849549 Process for preparation of resorcinol  
A process for the preparation of resorcinol from diisopropylbenzene includes the steps of oxidizing m-diisopropylbenzene under anhydrous, non-alkaline conditions with oxygen, extracting...
4847436 Decomposition of dihydroperoxide to resorcinol  
An improvement in the preparation of resorcinol includes the decomposition of m-diisopropylbenzene dihydroperoxide (m-DHP) to resorcinol and acetone in the presence of an effective amount of a...
4847437 Oxidation and subsequent decomposition of dihydroperoxide  
An improvement in a process for the preparation of resorcinol which includes the steps of treating an extract of selected oxidation products of diisopropylbenzene with hydrogen peroxide to convert...
4801758 Procedure for producing hydroquinone  
A procedure for producing hydroquinone from a hydrocarbon mixture obtained as a by-product when producing cumene, by selectively oxidizing tertiary alkylaromatics to form hydroperoxides, by...
4695658 Aryl carboxylate process  
A process for replacing an aromatic carbon-thallium bond with a carbon-oxygen bond. The process is particularly suitable for producing specific aromatic isomers by thallating an aromatic compound...
4670609 Dihydric phenol recovery process  
An improved process for the manufacture of a dihydric phenol such as hydroquinone wherein a dialkylbenzene is oxidized to a dihydroperoxide, the dihydroperoxide being extracted from the oxidate by...
4508923 Oxidation of hydrocarbons  
There is disclosed an improved process for oxidizing a hydrocarbon to produce a reaction mixture containing the corresponding organic hydroperoxide of said hydrocarbon and decomposing said...
4490566 Production of phenol  
Phenol and acetone are produced by the cleavage of cumene hydroperoxide in the presence of a solid heterogeneous catalyst with acidic activity comprising an intermediate pore size zeolite such as...

Matches 1 - 50 out of 104 1 2 3 >