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)
07/1990
07/03/1990US4939306 Preparation process of 4,4'-biphenol, precursor of same and preparation process of precursor
07/03/1990US4939178 Use of avarol for the control of adult T-cell leukemia/lymphoma
07/03/1990US4939177 Use of avarol for the control of AIDS and ARC
07/03/1990US4938790 Herbicidal 12-substituted 12H-dibenzo(D,G)(1,3)dioxocin-6-carboxylic acids
06/1990
06/28/1990CA2006468A1 Naphthalene derivatives
06/27/1990EP0374692A2 Use of hydroxycarboxylic acids as stabilizers for bisphenols
06/27/1990EP0374379A1 Process for the simultaneous dealkalization and desulphurization of phenols
06/27/1990CN1043311A Certain 2-(2',3,'4'-trisubstituted benzoyl)-1,3-cyclohexanediones
06/26/1990US4937392 Process for preparing 4,4'-dihydroxydiphenylmethane
06/26/1990CA1270849A1 Process for producing highly pure 2,6- diacetoxynaphthalene
06/22/1990CA2006360A1 Stabilizer for bisphenols and process of using same
06/20/1990EP0373730A1 Process for purifying bisphenols
06/20/1990EP0373728A1 Process for continuous purification of bisphenols
06/20/1990EP0373668A2 A process for the synthesis of ortho-methylated hydroxyaromatic compounds
06/20/1990CN1043120A Preparation of cumene through alkylation of aromatic compound and preparation phenol through cumene
06/19/1990US4935560 Novel tetrahydronaphthalene & indane derivatives
06/19/1990US4935553 Process for preparing bisphenol A
06/19/1990CA2004601A1 Process for the simultaneous removal of bases and sulphur from phenois
06/13/1990EP0372282A2 Process for the preparation of 1,5-dihydroxy and 1,5 diaminonaphthalene
06/13/1990EP0371995A1 Process for producing phenylhydroquinones.
06/13/1990CN1042897A Alkylation of polycyclic aromatic compounds to alkylates enriched in para-substituted isomers
06/12/1990US4933511 Organometallic catalysts
06/12/1990US4933509 Using surface treated magnesium oxide catalyst
06/12/1990US4933507 Method of dehydrogenating cyclohexenone
06/12/1990US4933506 Process for the production of dihydric phenols
06/12/1990US4933475 Pharmacologically active 4-[2-hydroxy-4-(substituted)phenyl]naphthalen-2(1H)-ones and 2-ols, derivatives thereof and intermediates therefor
06/06/1990EP0371738A2 Preparation of phenol through cumene
06/05/1990US4931594 9,9-bis/4-hydroxyphenyl/fluorene by reacting phenol with fluorenone; acidic cationic exchange resin catalyst
05/1990
05/31/1990WO1990005712A1 Certain 2-(2',3',4'-trisubstituted benzoyl)-1,3-cyclohexanediones
05/30/1990EP0370729A1 Process for producing isopropylnaphthols
05/30/1990EP0370555A2 A process for the separation of a phenol
05/30/1990EP0370343A1 Method for the production of 4-methyl-2-cyclohexylphenol
05/29/1990US4929771 Process for the preparation of alkyl-substituted phenols or naphthols
05/29/1990US4929770 Distillation, solidification, filtration
05/29/1990US4929762 Process for producing a phenol and/or a cyclohexanone
05/29/1990CA1269667A1 .alpha.-SUBSTITUTED 3,3,3-TRIFLUORO-2,2-DICHLORO-1- PROPANOLS AND THE PREPARATION THEREOF
05/23/1990EP0368866A1 Aryl substituted naphthalene, benzoxepine, benzazepine, benzocycloheptene derivatives
05/23/1990CA2003558A1 Process for the separation of a phenol
05/22/1990US4927979 Process for the preparation of p-ethylphenol
05/22/1990US4927978 Forming adduct crystals of a bisphenol and a phenol
05/22/1990US4927973 Crystallization
05/22/1990US4927956 Or 4-hydroxystyrene derivatives
05/17/1990WO1990003979A3 Anti-androgen compounds
05/17/1990DE3918762A1 Prepn. of cumyl:phenol or methyl derivs. from e.g. phenol - on cation-exchanger and anion-exchanger, after pre-activation of phenol and cation-exchanger
05/17/1990DE3837090A1 Films made from aromatic polycarbonates
05/16/1990EP0368604A2 New diamino and dinitro compounds and a process for preparing the diamino compounds
05/16/1990EP0368429A2 Fluor-substituted benzene derivatives
05/16/1990EP0367944A2 Ether derivative of 4-[3H] -quinazolinone, a process for the preparation thereof, and pharmaceutical compositions
05/16/1990EP0367869A1 Tetrabromobisphenol-A process
05/09/1990EP0367408A2 Method for production of phenol/acetone from cumene hydroperoxide
05/08/1990CA1268782A1 Process for the preparation of tribromotetramethylbiphenol and related compounds
05/01/1990US4922031 Biphenyldisulfonic acid, alkali metal hydroxide
05/01/1990US4921994 Pharmacologically active 2-hydroxy-4-(substituted) phenyl cycloalkanes and derivatives thereof
04/1990
04/28/1990CA2001054A1 Clathrate compound and process for stabilizing diethyltoluamide
04/25/1990EP0364808A2 Process for preparing dihydroxydiaryl alkanes
04/25/1990EP0364548A1 Octafluorobiphenyls.
04/25/1990CN1041581A Phenol preparation process and propylene recovery therefrom
04/19/1990WO1990003979A2 Anti-androgen compounds
04/19/1990DE3844633A1 Dihydroxydiphenylcycloalkanes, their preparation, and their use for the preparation of high-molecular-weight polycarbonates
04/18/1990EP0364378A1 Process for the preparation of methyl hydroquinone
04/18/1990EP0363801A2 Process for making 3,5-dialkyl-4-hydroxybenzyl-substituted aromatics
04/18/1990EP0363458A1 2,3-difluorobenzenes.
04/17/1990US4918245 Process for preparing bisphenol A
04/11/1990EP0363128A2 Anti-androgen compounds
04/11/1990EP0362318A1 2,3-difluorobiphenyls.
04/11/1990CN1041151A Dihydroxydiphenyl cycloalkanes, their production and their use for producing high molecular weight polycarbonates
04/07/1990CA2000276A1 Fluorosubstituted benzene derivatives
04/04/1990EP0361755A2 Phenol preparation process and propylene recovery therefrom
04/04/1990EP0361438A2 Polyalkenylphenol compound
04/04/1990EP0361067A1 Disubstituted naphthalines, preparation processes and their herbicidal use
04/04/1990EP0360874A1 Process for preparing para-cumylphenol
04/04/1990EP0172849B1 Melt processable optically anisotropic polymers
04/04/1990CN1040980A Method and compositions providing enhanced chemiluminescence from 1,2-dioxetanes
04/03/1990US4914245 Antibiotic
04/03/1990CA1267422A1 Process for the conversion of t-alkylphenol waste distillation bottoms to para-t-alkylphenol
03/1990
03/28/1990EP0360622A2 Novel optically active benzene derivatives, process for producing the same and liquid-crystalline composition containing said derivatives as liquid-crystalline compound and light switching elements
03/28/1990EP0360092A1 Process for preparing 4,4"-dihydroxyterphenyl
03/28/1990EP0359953A1 Dihydroxydiphenylcycloalkanes, their preparation and their use for the preparation of high molecular polycarbonates
03/27/1990US4912264 Liquid phase alkylation of a hydroxyl containing aromatic compound
03/27/1990US4912263 Ionic exchangers modified with thiazolines
03/27/1990CA1267159A1 Process for the preparation of 4,4'-biphenol
03/21/1990EP0358992A2 Process for the manufacture of bis-phenols
03/21/1990EP0358871A2 Radiation-sensitive positive resist composition
03/20/1990US4910286 Reactive phenolic antioxidants and polyesters reacted therewith
03/14/1990EP0358574A1 Process for the preparation of adamantane-1 derivatives
03/14/1990EP0357953A1 Mixtures of organic ammonium salts and their use as drag-reducing agents
03/13/1990US4908424 Curable composition comprising reaction product of a bisnaphthol with a diglycidyl ether of a bisnaphthol
03/13/1990CA1266672A1 Dyarylacetylenes, their preparation and their use
03/13/1990CA1266646A1 Benzonaphtalenic derivatives, process for their preparation and uses as pharmaceutic and cosmetic agents
03/12/1990EP0303617A4 Acid catalyzed process.
03/06/1990US4906791 Process for preparing p-cumylphenol
03/06/1990US4906790 Method of oxidizing secondary alkyl substituted naphtalenes and a process of producing isopropylnaphthols
03/06/1990US4906789 Methods for bisphenol A production
03/06/1990US4906669 Isoprenoid derivatives and anti-ulcer agents containing the same
03/06/1990US4906636 2-Substituted-1-naphthols as 5-lipoxygenase inhibitors
02/1990
02/28/1990EP0355983A1 A process for the low residence time dehydration of p-acetoxyphenyl methylcarbinol
02/28/1990EP0355513A2 Isomerisation or homologisation of bisphenols
02/28/1990EP0355319A2 Process for recovering a dihydric phenol from a scrap polyester
02/21/1990CN1039796A Method of making bisphenol-a by heteropoly acid regarding as catalytic agent
02/20/1990US4902837 Process for preparing Biphenols
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