Patents
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Patents for C07C 37 - Preparation of compounds having hydroxy or o-metal groups bound to a carbon atom of a six-membered aromatic ring (10,407)
12/2000
12/14/2000DE10020272A1 P,p'-biphenol preparation comprises debutylating a 4,4'-biphenol compound with at least one tert.-butyl group in the presence of or treating with sulfuric or (hypo)phosphorous acid
12/13/2000CN1059428C Method for preparing high-grade bisphenol A
12/06/2000EP1056693A1 Anionic surfactants based on alkene sulfonic acid
12/06/2000EP1056682A1 Method for suspension hydrogenation of an anthraquinone compound in a special reactor in order to produce hydrogen peroxide
12/05/2000US6156939 Catalytic oxidation using hydrogen peroxide in presence of inorganic iron salt, pyrazin-2-carboxylic acid and trifluoroacetic acid
12/05/2000US6156938 Process for making phenol or phenol derivatives
11/2000
11/29/2000EP1055657A1 Method of refining dihydroxyaryl compound
11/29/2000CN1274709A Crystal separating-out device of bisphenol A. phenol crystal adduct, manufacture ad device thereof
11/22/2000CN1273961A Process for extracting peonol with supercritical or liquid-state CO2
11/21/2000US6150566 Bringing xylenol isomer mixture into contact with 1,1-di(4-hydroxyphenyl)cyclohexane to form complex, having specific xylenol isomer released from complex
11/16/2000WO2000067895A1 Method for high throughput chemical screening
11/16/2000DE19921783A1 Verfahren zur Herstellung von Phenolen und aromatischen Aminen Process for the preparation of phenols and aromatic amines
11/15/2000EP1052242A1 Process for the preparation of phenols and aromatic amines
11/14/2000US6147264 Brominating bisphenol a in liquid phase medium in which tetrabromobisphenol a is relatively insoluble, using stoichiometric deficiency of bromine to form precipitate in reaction mass, recovering precipitate, recovering product
11/09/2000WO2000066523A1 Removal of salts in the manufacture of phenolic compound
11/08/2000CN1272483A Method for producing P,P'-diphenol
11/07/2000US6143937 Recovery of hydroxyaromatic compound from aqueous extract solutions
11/07/2000US6143856 By pyrolysing lignocellulosic material at a temperature of no more than about 550 degrees c. under a specified absolute pressure to produce pyrolysis vapors, and condensing the pyrolysis vapors to obtain a condensate of given dew point
11/02/2000WO2000064849A1 Production of phenol
11/02/2000EP1048639A1 Catalyst for hydroxylation and process for producing aromatic hydroxy compound
11/01/2000CN1271715A Method for obtaining biphenol A
11/01/2000CN1058002C Method for treatment of mixture of hydroperoxide
11/01/2000CN1057993C Process for producing 2,2-bis (4-hydroxyphenyl)
10/2000
10/25/2000EP0915816B1 Process for preparing alcohols and/or aldehydes from olefins
10/25/2000EP0906270B1 Process for producing hydroxyarenes
10/24/2000CA2021547C Pharmaceutically active 3-aryl and 3-heteroaryl-2-fluoro-1-olefins
10/19/2000WO2000061532A1 Process for the preparation of bisphenol a
10/18/2000EP1044260A1 Method for obtaining grape tannin, resulting tannin and uses
10/18/2000CN1057481C Compound oxide catalyst for synthesizing benzene diphenol by phenol-hydrogen peroxide hydroxylation
10/17/2000US6133487 Process for the oxidation of aromatic compounds to hydroxyaromatic compounds
10/17/2000US6133486 Phenol recovery from BPA process waste streams
10/17/2000US6133459 Method and compositions providing enhanced chemiluminescence from 1,2-dioxetanes
10/17/2000US6133190 Supported mercaptoakyl-substituted polystyrenesulfonate is used as a catalyst for condensation of aldehyde or ketone with phenol to form dihydroxy compound
10/12/2000WO2000059853A1 Process for the production of bisphenol a
10/12/2000WO2000059852A1 Method for the oxidation of benzene and/or toluene to phenol and/or cresols
10/11/2000EP1042264A1 High selective method of phenol and acetone production
10/11/2000EP0863121B1 PROCESS FOR PREPARING m-HYDROXYALKYLBENZENE
10/11/2000CN1269346A Process for producing alkyl substituted hydroquinone
10/10/2000US6130359 Phenol ring seal
10/05/2000WO2000058250A1 Hydroperoxide decomposition process
10/05/2000WO2000058009A1 Cationic exchange resin
10/05/2000DE19903414A1 Verfahren zum Entfernen von Hydroxyaceton aus hydroxyacetonhaltigem Phenol A method for removing hydroxyacetone from phenol hydroxyacetonhaltigem
10/04/2000EP1041061A2 Process for producing alkyl-substituted hydroquinones
10/04/2000CN1268502A Method for hydroxylation of phenol
10/03/2000US6127583 Process for preparing acetylene derivative from a ketone compound
10/03/2000CA2145069C Recovery of phenol from low concentrations with sodium sulfate
09/2000
09/28/2000WO2000056911A1 Synthesis of 1,2,3,4-tetrahydroxybenzenes and 1,2,3-trihydroxybenzenes using myo-inositol-1-phosphate synthase and myo-inositol 2-dehydrogenase
09/28/2000WO2000056690A1 Method for producing an aromatic compound containing at least one hydroxyl group by catalytic oxidation with a medium containing at least dinitrogen monoxide as the oxidizing agent on a catalyst
09/28/2000WO2000056689A1 Method for producing an aromatic compound containing at least one hydroxyl group by catalytic oxidation using at least one peroxidic compound as an oxidizing agent on a catalyst
09/28/2000WO2000056682A1 Hydroperoxide decomposition process
09/28/2000CA2366222A1 Synthesis of 1,2,3,4-tetrahydroxybenzenes and 1,2,3-trihydroxybenzenes using myo-inositol-1-phosphate synthase and myo-inositol 2-dehydrogenase
09/27/2000CN1267633A Process for producing laughing gas
09/21/2000DE19937019A1 Preparation of the 4-aryl-2-butanols, (-)-betuligenol and (-)-betuloside, useful as antiinflammatory agents, comprises e.g. defatting air-dried powdered Taxus wallichiana leaves with aliphatic hydrocarbon solvent
09/21/2000DE19912644A1 Verfahren zur Herstellung einer, mindestens eine Hydroxylgruppe enthaltenden, aromatischen Verbindung durch katalytische Oxidation mit zumindest einer peroxidischen Verbindung als Oxidationsmittel an einem Katalysator A process for the preparation of a, at least one hydroxyl-containing aromatic compound by the catalytic oxidation with at least one peroxidic compound as the oxidizing agent over a catalyst
09/21/2000DE19912643A1 Verfahren zur Herstellung einer, mindestens eine Hydroxylgruppe enthaltenden, aromatischen Verbindungen durch katalytische Oxidation mit einem zumindest Distickstoffmonoxid als Oxidationsmittel aufweisenden Medium an einem Katalysator A process for the preparation of a, at least one hydroxyl-containing aromatic compounds by catalytic oxidation with an at least nitrous oxide as an oxidant over a catalyst comprising medium
09/21/2000DE10009639A1 Production of dinitrogen monoxide (laughing gas) by catalytic reduction of nitrogen monoxide with a reducing agent in the gas phase with heterogenic catalysis
09/20/2000EP1036761A1 Process for the preparation of nitrous oxide
09/20/2000CN1266839A Process for removing hydroxy acetone from phenol contg. hydroxy acetone
09/20/2000CN1056597C Process for preparing alkylphenol
09/19/2000US6121500 Production of 6-bromo-2-naphthol and derivatives
09/19/2000US6120653 Separation and purification method of t-butyl-methylphenol isomer
09/14/2000WO2000053315A1 Process for preparing catalyst for use in bisphenol production
09/14/2000DE19860144C1 Verfahren zur Herstellung von Bisphenol A A process for the production of bisphenol A
09/14/2000DE19851944C1 Purification of 3-(4-hydroxyphenyl)-1,1,3-trimethylindan-5-ol (I), useful for the production of polycarbonate materials, comprises dissolution in a solvent and addition of a reducing agent.
09/12/2000US6118029 Process for producing 3,3',5,5'-tetra-t butylbiphenol
09/05/2000USRE36856 Catalysts for production of phenol and its derivatives
08/2000
08/31/2000WO2000050372A1 Combination ion exchange resin bed for the synthesis of bisphenol a
08/31/2000WO2000050371A2 Method and composition for hydroxylation of aromatic substrates
08/31/2000WO2000050364A1 Method and composition for hydroxylation of aromatic substrates
08/29/2000US6111149 Process for preparing alcohols and/or aldehydes from olefins
08/29/2000US6111133 Process for preparing substituted styrenes
08/24/2000WO2000049028A1 Method for preparing chiral diphosphines
08/23/2000EP1028935A1 Fluorinated derivatives of phenanthrene and the utilization thereof in liquid crystal mixtures
08/23/2000CN1263883A Process for preparing powdered inositol
08/22/2000US6107527 By means of catalytic oxidation of isoalkyl aromatic substance with oxygen, and decomposition of the hydroperoxide thus formed
08/22/2000US6107024 Using 1,2-dioxetane derivative substrate in enzyme-linked assay where enzyme is linked to antigen, antibody, hapten or nucleic acid; forms aryloxide intermediate when triggered, then releases energy to form light and two carbonyl compounds
08/17/2000WO2000047542A1 A process for removing adhered crystals in a bpa/phenol crystallizer system
08/17/2000WO2000047031A2 Chemical partitioning agents and methods of using same
08/16/2000EP1028102A1 Isomerization of alkyl phenol with a solid acid catalyst
08/16/2000EP1027310A1 Method for producing phenols, aldehydes, esters and/or ketones from lignin and/or lignin sulphonic acid
08/16/2000EP1027282A1 Method for hydrogenating an anthraquinone compound
08/15/2000US6103924 Rearrangement of 2,6,6-trimethylcyclohex-2-ene-1,4-dione in the presence of a solid, acid catalyst and an acylating agent
08/10/2000WO2000045769A2 Process for extracting polyphenolic antioxidants from purine-containing plants
08/10/2000CA2361531A1 Process for extracting polyphenolic antioxidants from purine-containing plants
08/09/2000EP1026164A1 Process for extracting polyphenolic antioxidants from purine-containing plants
08/09/2000EP0891368B1 Catalytic production or aryl alkyl hydroperoxides by polynuclear transition metal aggregates
08/09/2000CN1262669A Method for removing metal ions from cresol mixtures
08/09/2000CN1262668A Method for producing tetrabutyl ammonium phenolate diphenol adduct
08/03/2000WO2000044924A1 Biocatalytic synthesis of quinic acid and conversion to hydroquinone
08/03/2000WO2000044699A1 Process for the production of phenolic-rich pyrolysis oils for use in making phenol-formaldehyde resol resins
08/02/2000EP1024129A2 Method of manufacturing phenol by direct oxidation of benzene
08/02/2000EP1024128A1 Process for the separation of hydroxy acetone from a phenol containing the same
08/02/2000CN1261872A Method for producing and purifying 3-(4-hydroxyphenyl)-1,1,3-trimethylindan-5-ol
08/02/2000CN1055029C Catalyst for prepn. of p-dihydroxybenzene phenol by direct oxidation phenol
08/02/2000CA2297855A1 Isomerization of alkyl phenol with a solid acid catalyst
07/2000
07/29/2000CA2260570A1 Process for the production of phenolic-rich pryolysis oils for use in making phenol-formaldehyde resole resins
07/27/2000WO2000043339A1 Hydroxylation of aromatic compounds at elevated pressures
07/27/2000WO2000043334A2 Method and installation for separating and purifying diphenols in the phenol and phenol derivatives industry
07/26/2000EP1021391A1 Method for c-alkylating hydroxylated aromatic compounds
07/26/2000CN1261368A Method for producing phosphonium phenolates
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