| 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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| 10/08/1997 | CN1161321A Method for extracting tea polyphenol and by-products from tea leaves |
| 10/07/1997 | US5675044 Depolymerization first by swelling the polymeric particles with solvent, deesterification by mixing with ammonium hydroxide |
| 10/07/1997 | US5675042 Selective hydroxylation of phenol or phenolic ethers |
| 10/01/1997 | CN1160704A Synthesis technology of bisphenol F |
| 10/01/1997 | CN1160703A Production of catechol |
| 09/30/1997 | US5672777 Catalysts for production of phenol and its derivatives |
| 09/30/1997 | US5672776 Forming an adduct with tertiary amine; cracking |
| 09/30/1997 | US5672775 Method of separating phenol from highly concentrated phenol solution |
| 09/30/1997 | US5672774 Phenol tar processing method |
| 09/25/1997 | WO1997034694A1 PREPARATION AND USE OF NON-CHROME CATALYSTS FOR Cu/Cr CATALYST APPLICATIONS |
| 09/25/1997 | WO1997034688A1 Upflow fixed bed reactor with packing elements |
| 09/25/1997 | CA2250132A1 Preparation and use of non-chrome catalysts for cu/cr catalyst applications |
| 09/24/1997 | EP0796834A2 Purification of p,p-bisphenolate solutions |
| 09/24/1997 | EP0796833A2 Process for the preparation of hydroxyaromatics |
| 09/23/1997 | US5670465 Preparation of p-fuchsones and synthesis of p-dihydroxylated aromatic compounds therefrom |
| 09/23/1997 | CA1339471C Electrochemical synthesis of 2-aryl-hydroquinones |
| 09/10/1997 | CN1158838A Method of extractive separation of diaryl carbonates and original aromatic hydroxy compounds from reaction solutions |
| 09/10/1997 | CN1158837A Manufacture of vitamin K1 |
| 09/02/1997 | US5663457 Reaction of polyalkylene with phenol in cyclohexane and macroreticulation ion exchange resin catalyst |
| 09/02/1997 | US5663456 Crystals of bisphenol a with phenol, filtration of a slurry and washing a filter cake |
| 08/27/1997 | EP0791558A1 Silica/zeolite composite materials in spherical form and process for their preparation |
| 08/27/1997 | EP0790859A1 Device for bringing pourable solids into contact with gases or liquids |
| 08/21/1997 | WO1997030009A2 Method to prepare ortho substituted phenol |
| 08/21/1997 | WO1997029991A1 PROCESS FOR PRODUCING BETA ZEOLITE CONTAINING Ti, AND WITHOUT Al |
| 08/20/1997 | EP0790231A1 Process for the extractive separation of diaryl carbonates and corresponding hydroxyaromatic compounds from reactive solutions |
| 08/20/1997 | CN1157282A Dehdyration of ion-exchange resin catalyzed reactions |
| 08/14/1997 | WO1997029066A1 Phenol compound hydroxylation method |
| 08/13/1997 | EP0788839A1 An ion exchange resin catalyst for the synthesis of bisphends and its preparation |
| 08/12/1997 | US5656619 Diphenylheteroalkyl derivatives, the preparation thereof and drugs and cosmetics prepared therefrom |
| 08/12/1997 | US5656413 Demetallization, purification by filtering through a cleaned acidic exchanging resin and anion exchange resin |
| 07/30/1997 | EP0786443A1 Separation of phenol |
| 07/30/1997 | CN1155879A Phenol with low levels of methylbenzofuran |
| 07/29/1997 | US5652345 1,2-dioxetane compound |
| 07/24/1997 | WO1997026235A1 PROCESS FOR THE PREPARATION OF para-FLUOROPHENOL |
| 07/24/1997 | WO1997026233A1 Organic ethylene compound isomerisation method using nickel (0) complexes |
| 07/23/1997 | EP0785181A2 Process for recovering bisphenols |
| 07/23/1997 | EP0785180A2 Process for the alkylation of hydroxyaromatic compounds |
| 07/16/1997 | EP0783473A1 Process for the purification of 2,6-diisopropylphenol |
| 07/15/1997 | US5648580 Supported lewis acid catalysts for hydrocarbon conversion reactions |
| 07/15/1997 | US5648564 Saponification of diesters to form xanthophyll |
| 07/15/1997 | US5648562 Oxidation process |
| 07/15/1997 | US5648561 Process for the production of high purity and ultrapure bisphenol-A |
| 07/09/1997 | EP0782978A1 Method for preparing and purifying 1,1,1-tris(4-hydroxyphenyl)ethane |
| 07/08/1997 | US5646330 Reducing an asymmetric biaromatic ketone with an isopinocamphenylborane reducing agent |
| 07/08/1997 | US5646321 Guerbet meadowfoam esters |
| 07/03/1997 | WO1997023436A1 A process for the formation, isolation and purification of comestible xanthophyll crystals from plants |
| 07/02/1997 | EP0781263A1 Reduced methyl bromide process for making tetrabromobisphenol-a |
| 07/02/1997 | CN1035324C Method for producing 2,6-dichlorophenol with o-chlorophenol |
| 06/26/1997 | WO1997022573A1 Improved process for the production of bisphenols |
| 06/26/1997 | CA2240028A1 Improved process for the production of bisphenols |
| 06/25/1997 | EP0780357A1 Preparation of vitamin K1 |
| 06/25/1997 | EP0780356A2 Method for preparing a solution of an alkali salt of anthrahydroquinone |
| 06/18/1997 | EP0779263A1 New derivatives of 2,3,6-trifluorophenol and a process for their preparation |
| 06/18/1997 | EP0779262A2 Process for producing tetrabromobisphenol-A |
| 06/18/1997 | EP0558552B1 A process to obtain high-purity bisphenol a |
| 06/17/1997 | US5639922 Process for treatment of hydroperoxide mixture |
| 06/14/1997 | CA2192772A1 Derivatives of 2,3,6-trifluorophenol and a process for their preparation |
| 06/12/1997 | WO1997020800A1 Improved metal-ligand complex catalyzed processes |
| 06/11/1997 | CN1151391A Process for production of phenol |
| 06/10/1997 | US5637669 Thermosetting resin; liquid crystalline polymers |
| 06/05/1997 | DE19545105A1 Selective ortho- and para-mono- or di-methylation of phenol compounds |
| 06/04/1997 | EP0592627B1 Process for high purity tetrabromobisphenol-a |
| 05/21/1997 | EP0773917A1 Method for preparing a meta-dihydroxylated aromatic compound |
| 05/21/1997 | CN1150139A Method for making tris (hydroxyphenyl) compounds using ion exchange resins |
| 05/20/1997 | US5631353 Alkene adamantane intermediates and the corresponding 1,2-dioxetanes |
| 05/20/1997 | US5631338 Process for preparing bisphenol A |
| 05/15/1997 | WO1997017400A1 Process for improving color of basic metal organic salts and stabilizing halogen-containing polymers therewith |
| 05/14/1997 | EP0773210A1 Process for the preparation of fluorinated aromatic compounds |
| 05/14/1997 | CN1149508A Improved method for preparing ion exchanging resin as catalyst in bisphenol synthesis |
| 05/13/1997 | US5629457 Dephenolizing process for production of high-quality polycarbonate grade bisphenol A |
| 05/12/1997 | CA2189945A1 Process for preparing fluorinated aromatics |
| 05/09/1997 | WO1997016402A1 Method for c-alkylating hydroxylated aromatic compounds |
| 05/07/1997 | EP0771589A1 Sulfonate and mercaptan groups containing inorganic support material, process for their preparation and for their use as catalysts |
| 05/02/1997 | EP0770591A2 Phenol tar processing method |
| 05/02/1997 | EP0770590A1 Process for the preparation of bisphenol compounds with simultaneous dehydration |
| 05/02/1997 | EP0770589A2 Process for the preparation of bisphenols using new co-catalysts |
| 05/01/1997 | WO1997015542A1 Process for purifying a 2,6-dialkylphenol |
| 05/01/1997 | CA2235843A1 Process for purifying a 2,6-dialkylphenol |
| 04/30/1997 | CN1148844A Method for production of phenol and its derivatives |
| 04/30/1997 | CN1148819A Catalysts for production of phenol and its derivatives |
| 04/23/1997 | EP0628019B1 Polyfluoroalkylation of aromatic compounds |
| 04/17/1997 | WO1997013569A1 Thermally-managed separation and dewatering processes for recovering acid products |
| 04/17/1997 | CA2234070A1 Thermally-managed separation and dewatering processes for recovering acid products |
| 04/03/1997 | WO1997011929A1 Low metal ion containing 4,4'-(1-(4-(1-(4-hydroxyphenyl)-1-methylethyl)phenyl)ethylidene)bisphenol and photoresist compositions therefrom |
| 04/02/1997 | EP0765852A1 Method for making tris (hydroxyphenyl) compounds using ion exchange resins |
| 04/02/1997 | EP0765851A2 Preparation of 2,2'-bis(4-hydroxyphenyl)propanes in the presence of organopolysiloxanes containing sulphonate and mercapto groups |
| 04/02/1997 | EP0765685A2 Method for preparing ion-exchange resin for use as a catalyst in the synthesis of bisphenols |
| 04/02/1997 | CN1034397C Equipment for producing ion exchange resin catalyst used in synthesizing bisphenol |
| 04/01/1997 | US5616816 Tertiary alkyl alkylphenols and organic compositions containing same |
| 04/01/1997 | US5616765 Demethylation of 4-methoxybenzocyclobutane in presence of aluminum iodide; reacting with chlorotrimethylsilane |
| 04/01/1997 | US5616734 Process for the catalytic oxidation of aromatic compounds |
| 04/01/1997 | US5616729 Fluorescence |
| 03/26/1997 | EP0764467A1 Narrow pore size distribution monomodal and polymodal catalysts and catalyst carriers, and their manufacture |
| 03/26/1997 | EP0764146A1 Phenol with low levels of methylbenzofuran |
| 03/19/1997 | CN1145352A Process for purification of bisphenol |
| 03/19/1997 | CN1145280A Catalyst for prepn. of p-dihydroxybenzene phenol direct oxidation |
| 03/12/1997 | EP0761630A1 Process for preparing alkylphenols |
| 03/12/1997 | EP0579666B1 Selective hydroxylation of phenol or phenolic ethers |
| 03/06/1997 | WO1997008122A1 Isomerization of bisphenols |
| 03/06/1997 | CA2230272A1 Isomerization of bisphenols |