Patents
Patents for C07C 39 - Compounds having at least one hydroxy or o-metal group bound to a carbon atom of a six-membered aromatic ring (10,875)
09/1998
09/17/1998DE19709797A1 Synergistische Mischungen von Alkylphenolformaldehydharzen mit oxalkylierten Aminen als Asphalten-Dispergatoren Synergistic mixtures of alkylphenol formaldehyde resins with alkoxylated amines as asphaltene dispersants
09/16/1998EP0864566A2 Process for preparation of hydroxynaphthalenes
09/16/1998CN1193313A Propynyl or dienyl diaromatic compounds
09/16/1998CN1193007A Process for synthesizing mixed tertbutyl-phenol
09/15/1998US5807656 Polyhydroxy compound and a positive photoresist containing the same
09/11/1998WO1998039279A1 Novel 1,3-diphenylpropane derivatives having inhibitory activity against tyrosinase and process for preparation thereof
09/09/1998EP0863195A1 Phenol tar cracking process
09/09/1998EP0863121A1 PROCESS FOR PREPARING m-HYDROXYALKYLBENZENE
09/09/1998EP0862544A1 Process for purifying a 2,6-dialkylphenol
09/09/1998CN1039712C Process for prepn. of cumene hydroperoxide
09/09/1998CN1039707C Method for prepn. of P-nonylphenyl
09/02/1998EP0861688A1 Process for the hydroxylation of aromatic hydrocarbons
09/02/1998EP0426785B1 Compositions and methods for treating viral infections
08/1998
08/27/1998WO1998037046A1 PROCESS FOR THE MANUFACTURE OF TETRABROMOBISPHENOL-A WITH CO-PRODUCTION OF n-PROPYL BROMIDE
08/27/1998WO1998019997A3 Dihydropyrones with improved antiviral activity
08/26/1998EP0859812A1 Process for improving color of basic metal organic salts and stabilizing halogen-containing polymers therewith
08/19/1998CN1190892A Pharmaceutical compositions, based on etheric oils obtained from plants for use in the human and veterinary medical field
08/13/1998WO1998034894A2 Hydroperoxide decomposition process
08/13/1998WO1998030528A3 Production of racemic 2-(6-methoxy-2-naphthyl)propionic acid or precursors thereof
08/13/1998CA2279493A1 Hydroperoxide decomposition process
08/12/1998EP0857710A1 Method for determination of salt stoichiometry
08/11/1998US5792886 Methylation of 6-bromo-2-naphthol with methyl bromide to 2-bromo-6-methoxynaphthalene; forming grignard; reacting with a lower alkyl 2-bromopropionate
08/11/1998US5792585 Mixture containing low molecular weight novolak and quinonediazide sensitizer; sensitivity, resolution, heat resistance
08/05/1998EP0856505A1 Process for the selective preparation of 2,2'-bis(4-hydroxyphenyl)propanes
08/05/1998EP0856504A1 Process for producing 3,3',5,5'-tetra-t-butylbiphenol
08/04/1998US5789628 Production of 2,2'-bis (4-hydroxyphenyl) propanes in the presence of organopolysiloxanes containing sulphonate and mercapto groups
07/1998
07/29/1998EP0854850A1 Low metal ion containing 4,4'-(1-(4-(1-(4-hydroxyphenyl)-1-methylethyl)phenyl)ethylidene)bisphenol and photoresist compositions therefrom
07/29/1998EP0637294B1 Polymerization inhibitor for vinyl aromatics
07/28/1998US5786522 Manufacture of bisphenol-A
07/28/1998US5785823 Process for the purification of bisphenol
07/23/1998WO1998031651A1 Process for preparing bis-(4-hydroxyaryl-)-alkanes
07/23/1998DE19701278A1 Verfahren zur Herstellung von Bis-(4-hydroxyaryl)-alkanen Alkanes process for the preparation of bis (4-hydroxyaryl)
07/22/1998EP0853649A1 Treatment of transition metal containing pigments with chelating or silylating compounds
07/22/1998EP0853647A1 Fluorinated xanthene derivatives
07/21/1998US5783733 Process for manufacture of bisphenol
07/21/1998US5783355 Mixture of a 1,2-quinonediazide compound, alkali solubleand an aromatic polyhydroyl compound
07/16/1998WO1998030528A2 Production of racemic 2-(6-methoxy-2-naphthyl)propionic acid or precursors thereof
07/16/1998CA2276292A1 Production of racemic 2-(6-methoxy-2-naphthyl)propionic acid or precursors thereof
07/15/1998EP0852486A2 Antiplaque oral composition
07/14/1998US5780692 Catalytic asymmetric hydrogenation of a benzophenone; simplification
07/09/1998WO1998029385A1 Recovery of anhydrous alkanesulphonic acids
07/08/1998EP0781263A4 Reduced methyl bromide process for making tetrabromobisphenol-a
07/08/1998CN1039023C Polycarbonate film
07/07/1998US5777180 Reacting ketone and phenol in presence of an ion exchange resin catalyst and mercaptan compound
07/07/1998US5777007 Brominated p-cumylphenol flame-retardants for resin composition
07/02/1998WO1998028228A1 Trihalomethane adsorbent and process for producing the same
07/01/1998EP0850946A1 Cyclic phosphinic acid derivatives as stabilizers
06/1998
06/25/1998WO1998027039A1 Improved method for producing phenol and acetone from cumol
06/24/1998CN1185427A Process for preparing 1, 1, 1, -tri(4-hydroxyphenyl) ethane
06/24/1998CN1185426A Process for preparing alkylphenol
06/24/1998CA2225482A1 Cyclic phosphinic acid derivatives as stabilisers
06/23/1998US5770763 Polyarylcyclobutenes derived from 3,6 functionalized mono and dicyclobutabenzene
06/18/1998DE19755026A1 Verbessertes Verfahren zur Herstellung von Phenol und Aceton aus Cumol An improved process for producing phenol and acetone from cumene
06/17/1998EP0847975A1 Method for preparing and purifying 1,1,1-tris(4-hydroxphenyl)ethane
06/10/1998EP0729447A4 Method of making 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane
06/10/1998EP0712392B1 Process for the preparation of cumene hydroperoxide
06/09/1998US5763699 Process for preparing 2,2-diphenylhexafluoropropanes
06/09/1998US5763686 Method for preparing 1,1,1-tris(4-hydroxyphenyl)ethane
06/04/1998WO1998023568A1 Cyclopentylene compounds and intermediates therefor, epoxy resin composition, molding material, and resin-sealed electronic device
06/02/1998US5759942 Ion exchange resin catalyst for the synthesis of bisphenols and the process for preparing the same
05/1998
05/28/1998WO1998022419A1 Method for preparing a 4-hydroxybenzaldehyde and derivatives
05/28/1998WO1998022418A1 Substituted phenols and thiophenols useful as antioxidant agents
05/26/1998US5756861 Method for production for phenol and its derivatives
05/26/1998US5756860 Melting mixture of bisphenol compounds, cooling to solidify
05/26/1998US5756859 Heating a mixture of phenol and 2,4-pentanedione in molar ratio 6:1 under acidic conditions in presence of mercapto compound as promoter to produce a mixture of bisphenol a and product, separation by solvent extraction, decoloration
05/26/1998US5756851 Debromination; separation; methylation; etherification; contacting 2-bromo-6-methoxynaphthalene with methyl vinyl ketone; hydrogenation
05/26/1998US5756834 Process for preparing fluorinated aromatics
05/26/1998US5756781 Method for making tris(hydroxyphenyl) compounds using ion exchange
05/20/1998CN1182079A Process for producing 1, 3 -di -(2 -hydroperoxy -2 -propyl) benzene
05/20/1998CN1182072A Method for transport and storage of phenol
05/20/1998CN1038395C Ion exchange resin catalyzer for syntehsising bisphenol and preparation thereof
05/14/1998WO1998019997A2 Dihydropyrones with improved antiviral activity
05/14/1998WO1998019660A1 Colorants for colouring keratin fibres
05/14/1998CA2263429A1 Dihydropyrones with improved antiviral activity
05/12/1998US5750775 Alkaline ph for crystallization of complex
05/12/1998US5750743 Method for preparing a solution of an alkali salt of anthrahydroquinone
05/12/1998US5750577 Tetrameric calixarene for prophylaxis against cell infection by enveloped virus; side effect reduction, non drug-resistant
05/12/1998CA2016951C Method for preparation of taxol
05/07/1998DE19746627A1 Blockage-free production of 1,3-di-(2-hydroperoxy-2-propyl)benzene
05/07/1998DE19645539A1 Färbemittel zur Färbung von keratinischen Fasern Colorants for coloring keratin fibers
05/06/1998EP0840170A1 Selected O-quinonediazide sulfonic acid esters of phenolic compounds
05/06/1998EP0839798A2 Intermediates for preparating non-peptide retroviral protease inhibitors
05/06/1998EP0801638A4 Process to produce tetrabromobisphenol with the reduced formation of alkyl bromide by-products
05/06/1998EP0790859B1 Device for bringing pourable solids into contact with gases or liquids
05/06/1998EP0587776B1 Use of compositions and methods for inhibiting browning in foods and beverages
04/1998
04/30/1998WO1998017616A1 Production of nabumetone or precursors thereof
04/30/1998WO1998017615A1 PROCESS FOR PREPARING m-HYDROXYALKYLBENZENE
04/30/1998CA2265751A1 Production of nabumetone or precursors thereof
04/29/1998EP0665836B1 Bifunctional intermediates for use in the manufacture of liquid crystals
04/29/1998CN1180063A Fluoroalkyl substituted hydrochinone and its synthesis
04/28/1998US5744653 Method for preparing 1,3-dihydroxy-4,6-bis(α-methyl-α(4'-hydroxyphenyl)ethyl)benzene
04/28/1998US5744624 Saponification, salt formation, from diester )
04/28/1998US5744623 Terpene-quinones with antitumour activity
04/28/1998US5744617 Process for the preparation of substituted phenols
04/21/1998US5741954 Controlled heating of mixture of ethylbenzenesulfonic acid isomers(rich in meta-isomer) in sulfuric acid, then steam distillation for removal of ethylbenzene and caustic fusion yields m-ethylphenol
04/21/1998US5741821 Use of natural products and related synthetic compounds for the treatment of cardiovascular disease
04/21/1998US5741438 Optically active biphenyl derivative, process for preparation thereof, liquid crystal composition containing the same as an effective component, and liquid crystal element using the same
04/16/1998WO1998015514A1 Process for the hydroxylation of benzene
04/15/1998EP0835274A1 Hydroxy-substituted ethynylated biphenyls
04/15/1998CN1179144A Hydrochalcone derivatives, cosmetic compositions containing the same, and process for the preparation
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