| 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) |
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| 03/02/2000 | DE19838425A1 Verfahren zur Abtrennung mehrfunktioneller Alkohole von wasserlöslichen Salzen aus wäßrigen Systemen Process for the separation of polyfunctional alcohols from water-soluble salts from aqueous systems |
| 03/02/2000 | CA2339775A1 Vitamin d3 mimics |
| 03/01/2000 | EP0982283A2 Method for the separation of polyfunctional alcohols from water-soluble salts in aqueous systems |
| 03/01/2000 | EP0981508A1 Method for processing mother liquors from the production of bisphenol |
| 02/24/2000 | CA2280535A1 Process for separating polyfunctional alcohols from water-soluble salts in aqueous systems |
| 02/23/2000 | CN1049610C Preparation process of non-aluminium Ti (Zr, V)-Si five-membered ring zeolite catalyst |
| 02/22/2000 | US6028218 Agitating and heating at least about 275.degree. c. to melt an alkali metal aryloxide, then carboxylation with carbon dioxide; high speed reaction; useful for the preparation of aromatic hydroxycarboxylic acids chemical intermediates |
| 02/22/2000 | CA2105637C Two-stage cleavage of cumene hydroperoxide |
| 02/17/2000 | DE19840110C1 Production of bis:p-hydroxy-aryl-alkane from its adduct with phenolic starting material involves treatment with aqueous alkali hydroxide as an aerosol and removing the phenol by distillation |
| 02/16/2000 | EP0979811A1 Process for removing organic and/or inorganic acids from organic phases |
| 02/16/2000 | CN1049420C Process for preparing 2,2-diphenylhexalfluoropropanes |
| 02/15/2000 | US6025530 Heating and treating the tar with steam for a sufficient residence time to increase phenol conversion |
| 02/10/2000 | DE19829515A1 Metal-modified zeolite catalyst for the hydroxylation of aromatics with nitrous oxide, obtained by treatment of zeolite with gaseous metal salt, e.g. iron-III chloride, followed by calcination at high temperature |
| 02/09/2000 | EP0978498A1 Separating agent for optical isomers and process for producing the same |
| 02/09/2000 | CN1243818A Process for preparing polycarbonate-class biphenol A by heteropoly acid method |
| 02/09/2000 | CN1049211C Separating epuration p-cresol technology by complexing extraction crystallization method |
| 02/03/2000 | DE19857314A1 Stark saurer mensoporöser synergistischer Festkörper-Katalysator und Verwendung desselben Strongly acid of the same mensoporöser synergistic solid catalyst and use |
| 02/02/2000 | EP0975569A1 Process for the hydroxylation of 1,4-dichlorobenzene |
| 02/02/2000 | EP0975568A1 Process for preparing bis-(4-hydroxyaryl-)-alkanes |
| 02/02/2000 | EP0975559A1 Method for catalytic and selective oxidation of aromatic compounds |
| 02/02/2000 | CN1243503A Process for preparing bis-(4-hydroxyaryl)-alkanes |
| 01/26/2000 | EP0973714A2 Production of racemic 2-(6-methoxy-2-naphthyl)propionic acid or precursors thereof |
| 01/26/2000 | EP0973712A1 PROCESS FOR THE MANUFACTURE OF TETRABROMOBISPHENOL-A WITH CO-PRODUCTION OF n-PROPYL BROMIDE |
| 01/26/2000 | EP0900189A4 2-hydroxy-5-alkyl-beta-methylstyrene and process of preparing hydroxyarylaldehydes therefrom |
| 01/26/2000 | CN1048654C Dowson structure heteropoly compound catalyst for synthesizing hydrochinone with phenol and hydrogen peroxide by hydroxylation, and its prepn. |
| 01/25/2000 | US6017499 Apparatus for contacting solids in the form of freeflowing lumps with liquids or gases |
| 01/19/2000 | EP0972758A2 A process for producing phenolic compounds |
| 01/19/2000 | CN1241557A Condensation processing method for desorption gas of compound containing phenol, bisphenol A and steam |
| 01/18/2000 | US6015873 Polyphenol composition and method of producing the same |
| 01/12/2000 | EP0970940A1 Process for the recovery of products contained in the heavy side products from their preparation |
| 01/12/2000 | CN1241173A Separating agent for optical isomers and process for producing same |
| 01/11/2000 | US6013845 Fixed bed reactor packing |
| 01/11/2000 | US6013844 Preparation of catechol monoethers and catechols |
| 01/06/2000 | WO2000000454A1 Process for producing bisphenol a |
| 01/05/2000 | EP0968163A1 Process for the manufacture of 2-bromo-6-methoxynaphthalene |
| 01/05/2000 | CN1240417A Improved method for producing phenol and acetone from cumol |
| 01/05/2000 | CN1240202A Process and equipment for preparing dialkyl phenol |
| 01/04/2000 | US6011184 Descaling of bisphenol-A reactor using water |
| 12/29/1999 | CN1239939A Process for hydroxylation of benzene |
| 12/28/1999 | US6008315 Manufacturing method for bisphenols and a manufacturing method for polycarbonate |
| 12/21/1999 | US6005151 Reacting haloaromatic compound with olefin compound using palladium complex catalyst |
| 12/21/1999 | US6004559 Plant material is extracted using an organic solvent, preferably acetone, then saturated with reducing agent acids to reduce toxic ndga quinone, which naturally occurs in the plant material, to ndga; antiinflammatory, antiviral agents |
| 12/16/1999 | WO1999064384A1 A process for the preparation of tetrabromobisphenol-a |
| 12/16/1999 | WO1999064129A2 Process for preparing hydroxylated aromatics by hydrogen and oxygen |
| 12/15/1999 | CN1238752A Method for preparing 4-hydroxybenzaldehyde and its derivatives |
| 12/14/1999 | US6002051 As antioxidants for lubricating oils and normally liquid fuels |
| 12/14/1999 | US6002050 Process for the preparation of tetrabromobisphenol-A |
| 12/09/1999 | WO1999062853A1 Condensation method for a carbonyl compound on an aromatic derivative in a basic medium |
| 12/08/1999 | EP0962439A1 Process and apparatus for producing dihydric phenolic compound |
| 12/08/1999 | EP0801638B1 Process to produce tetrabromobisphenol with the reduced formation of alkyl bromide by-products |
| 12/07/1999 | US5998677 Process for the production of phenol |
| 12/02/1999 | WO1999061409A1 Bioreductive cytotoxic agents |
| 12/02/1999 | DE19858505A1 Selektive Oxidation und die Darstellung von Hydroxylgruppen enthaltenden aromatischen Verbindungen Selective oxidation, and the preparation of hydroxyl group-containing aromatic compounds |
| 12/02/1999 | CA2332806A1 Bioreductive cytotoxic agents |
| 11/30/1999 | US5994596 Method for preparing high purity indane bisphenols |
| 11/24/1999 | EP0958861A1 Activation method of titanium silicalite and its use in oxidation processes with hydrogen peroxide |
| 11/24/1999 | CN1235952A Process for preparing phenol and acetone by cumene hydroperoxide intensified decomposition |
| 11/24/1999 | CN1235950A Selective oxidation and synthesis of hydroxyl-containing aromatic compounds |
| 11/24/1999 | CN1235949A Method for enhancing selectivity of decomposition of dicumyl peroxide to alpha-methyl styrene |
| 11/24/1999 | CN1046754C Reduction process for phenol tar waste |
| 11/24/1999 | CN1046699C Process for preparing bisphenol A of good heat stability |
| 11/23/1999 | US5990362 Etherification of phenol with p-isopropenylphenol or 2-(4-hydroxyphenyl)-2-propanol in the presence of a catalyst, at a reaction temperature of no greater than about 65.degree. c. |
| 11/23/1999 | CA2003925C Preparation of cumene through alkylation of an aromatic compound and preparation of phenol through cumene |
| 11/16/1999 | US5986137 Catalytic allylation of aromatic alcohols or amines |
| 11/10/1999 | CN1234389A Noval process for preparing 2,3,5-trimethyl-hydroquinone diester |
| 11/10/1999 | CN1234380A Process for preparing acetylene derivative |
| 11/09/1999 | US5981806 Process for the preparation of hydroxynapthalenes |
| 11/03/1999 | EP0953558A1 Process for the preparation of aromatic compounds containing hydroxyl groups |
| 11/03/1999 | EP0952977A1 Production of phosphate esters |
| 11/02/1999 | US5977405 Preparation of aromatic hydroxycarboxylic acids and dialkali metal salts thereof |
| 11/02/1999 | US5977008 Selective introduction of active sites for hydroxylation of benzene |
| 10/28/1999 | DE19817644A1 Neues Verfahren zur Herstellung von 2,3,5-Trimethylhydrochinondiestern New process for the preparation of 2,3,5-trimethylhydroquinone |
| 10/27/1999 | EP0952137A1 Process for the preparation of 2,3,5-trimethylhydroquinone diester |
| 10/27/1999 | EP0952136A1 Process for the extraction of the salts contained in the neutralized separated product obtained in the preparation of phenol by the oxidation of cumene |
| 10/21/1999 | CA2269404A1 New process for the preparation of 2,3,5-trimethylhydrochinone diesters |
| 10/19/1999 | US5969196 Process for preparing 3,5-dimethylphenol |
| 10/19/1999 | US5969176 Acylation of trimethylhydroquinone in the presence of protonic acid |
| 10/19/1999 | US5969167 Method for making tris(hydroxyphenyl) compounds using ion exchange resins |
| 10/14/1999 | WO1999051558A1 Descaling of bisphenol-a reactor using water |
| 10/13/1999 | EP0949226A1 Process for the preparation of acetylene derivatives |
| 10/13/1999 | EP0948479A1 Recovery of anhydrous alkanesulphonic acids |
| 10/12/1999 | US5965476 Silica/zeolite composite materials in spherical form and process for their preparation |
| 10/12/1999 | US5964987 Purification of natural cresylic acid product by distilling to produce phenolic mixture; countercurrent liquid/liquid fractional extraction using heavy phase solvent of mixture of glycerol and polyhydric alcohol and light phase solvent |
| 10/07/1999 | WO1999050212A1 Method for removing metal ions from cresol mixtures |
| 10/06/1999 | EP0946482A1 Method for preparing a 4-hydroxybenzaldehyde and derivatives |
| 10/05/1999 | US5962752 Hydroxylation; one step conversion of benzene to phenol |
| 10/05/1999 | US5962751 Using orthophosphoric acid |
| 10/05/1999 | US5962747 Oxidizing 1,3-diisopropylbenzene; extraction; circulation |
| 09/30/1999 | WO1999048854A1 Process for producing bisphenol a |
| 09/30/1999 | WO1999048847A1 Aromatic bromination process |
| 09/29/1999 | EP0945420A1 Process for the preparation of bisphenols |
| 09/29/1999 | EP0944567A1 Improved method for producing phenol and acetone from cumol |
| 09/29/1999 | CN1229783A 2,4-dimethyl-6-s-alkylphenols |
| 09/29/1999 | CN1229782A Phenol compounds synthetized 2,3,6-trimethyl phenol catalyst and its tech. |
| 09/28/1999 | US5959160 Purification of p,p-bisphenolate solutions |
| 09/28/1999 | US5959158 Method and system for bisphenol a production using water |
| 09/22/1999 | EP0943598A1 Process for the separation and purification of xylenol isomers |
| 09/22/1999 | CN1229074A Method for obtaining bisphenol A |
| 09/21/1999 | US5955634 Group viii metal catalyst with water soluble phosphine coordinating agent |
| 09/16/1999 | WO1999046227A1 Method for producing 2,2'-dihydroxybiphenyls |