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)
10/1993
10/26/1993CA2092869A1 Preparation of 3-(hydroxyphenyl)propionaldehydes and, where appropriate, the preparation of 3-(hydroxyphenyl)propanols
10/24/1993CA2094654A1 Method of phenol extraction from phenol tar
10/21/1993CA2078457A1 Bisphenol a production using acidic clay catalysts
10/20/1993CN1077448A Carboxylic acid esters of hydroxyphenylalkanols as stabilisers
10/19/1993US5254753 Production of aryl ethanols
10/19/1993US5254751 Method for the decomposition of cumene hydroperoxide by acidic catalyst to phenol and acetone
10/19/1993US5254750 To neutralize; solvent extraction
10/19/1993CA1323154C Apparatus and process for producing prills
10/13/1993CN1077187A Method for production of 2,2-di (4-hydroxyl phenyl) propane
10/06/1993EP0564333A1 Process for hydroxylation of phenolic compounds
10/05/1993CA1322795C Process for extracting organic composites and solutions and aqueous suspensions thereof
10/05/1993CA1322744C Alkylation of polycyclic aromatic compounds to alkylates enriched in the para-substituted isomers
10/04/1993CA2093284A1 Process for producing highly pure phenol
10/02/1993WO1993020031A1 Process for high purity tetrabromobisphenol-a
09/1993
09/28/1993US5248840 Process for the preparation of hydrooxydiphenyls
09/28/1993US5248838 Process for preparing bisphenol fluorene compounds
09/28/1993US5248823 Diphenylheteroalkyl derivatives, the preparation thereof and drugs and cosmetics prepared therefrom
09/28/1993CA1322554C Meta-halo-phenolic alkylation products and epoxy systems
09/14/1993US5245093 Olefin polymerization
09/14/1993US5245090 Two-stage cleavage of cumene hydroperoxide
09/14/1993US5245086 Hydroxylation of phenols/phenol ethers
09/08/1993EP0559372A1 Process for preparing a bisphenol
09/08/1993EP0558847A1 Alkylphenol synthesis using acid-modified clay catalysts
09/08/1993EP0558552A1 A process to obtain high-purity bisphenol a.
09/08/1993CN1075950A Preparation method for p-isopropenyl phenol
09/08/1993CN1075901A Composite phase transfer catalyst, its preparation and use
09/08/1993CN1022034C Technology of extracting cotton phenol
09/07/1993US5243116 Acidic mordenite zeolite catalyst
09/07/1993US5243110 Dehydrochlorination of 1,1-bis(r-phenyl)-2,2,2-trichloroethanes
09/07/1993US5243093 Purification of bisphenol A, melt crystallization
09/07/1993US5243088 1-monodebromination of dibromonaphthalene compounds
09/07/1993US5243058 Allyl or propenyl group-containing naphthalene derivatives
09/07/1993US5243016 Improved solubility, polyimides, polyether ketones, polyesters, polyether sulfones
09/06/1993CA2078487A1 Alkylphenol synthesis using acid-modified inorganic clay catalysts
09/03/1993CA2090655A1 Process for preparing a bisphenol
09/02/1993WO1993016975A1 Production of aryl ethanols
09/02/1993WO1993016969A1 Polyfluoroalkylation of aromatic compounds
09/01/1993EP0558415A1 Method of improving a smooth oxidation reaction
09/01/1993EP0558376A1 Method of monohydroxylating phenolic compounds
09/01/1993EP0558214A1 Process for therecovery of bisphenol-A bycrystallization
09/01/1993EP0557999A2 Method for simultaneous preparation of bisphenol F and novolak phenol resins
09/01/1993EP0557404A1 ANTIVIRAL USE OF A 2,6-DI-t-BUTYLPHENOL COMPOUND SUBSTITUTED IN POSITION 4, PARTICULARLY IN RELATION TO HERPESVIRUSES AND PAPILLOMAVIRUSES.
08/1993
08/31/1993US5241098 Method for preparing a salt of 4-hydroxystyrene and for preparing 4-tertiary-butoxycarbonyloxystyrene therefrom
08/31/1993US5240568 Removal of acetophenone from phenol purification residues
08/28/1993CA2090375A1 Method for enhancing an oxidation reaction
08/25/1993EP0556293A1 Process for preparing bisphenol fluorene compounds.
08/25/1993CA2090082A1 Carboxylic acid esters of hydroxyphenylalkanols as stabilisers
08/24/1993US5238775 Radiation-sensitive resin composition
08/18/1993EP0318591B1 Process for preparing dihydroxynaphthalene
08/17/1993US5237112 Process for tetrabromobisphenol-A
08/17/1993US5237091 Naphthalene derivatives
08/17/1993US5236575 Synthetic porous crystalline mcm-49, its synthesis and use
08/05/1993WO1993015063A1 Uv light stabilizing, antioxidant and colorant compounds
08/04/1993EP0553890A1 Diphenyl heteroalkyl derivatives, their preparation, as well as medicinal and cosmetic preparations prepared therefrom
08/04/1993EP0553874A2 Process for production of cresols
08/04/1993EP0362318B1 2,3-difluorobiphenyls
08/04/1993CN1074896A Process for production of cresols
08/04/1993CN1074895A Process and apparatus for producing phenol by acidifying method with sulfur
08/03/1993US5233095 Process for manufacture of resorcinol
08/03/1993US5232819 Selected block phenolic oligomers and their use in phenolic resin compositions and in radiation-sensitive resist compositions
07/1993
07/28/1993EP0552633A1 Process for the separation of m- and p-cresol
07/28/1993EP0552518A1 Method of recovering bisphenol-A from preparative process efluent streams
07/28/1993EP0458965A4 Process for the preparation of vinyl ethers
07/22/1993WO1993014065A1 Process for preparing 1,3,5- tris(4'-hydroxyphenyl)benzene and its derivatives
07/22/1993WO1993009074A3 Chlorination process, alkylation of products of said process and some products thereof
07/21/1993EP0290458B1 Phenolic cyanate-phenolic triazine copolymers
07/20/1993US5229530 2,2-dialkyl-2,3-dihydro-6-bromobenzofuran
07/20/1993CA1320500C Phenol preparation process and propylene recovery therefrom
07/13/1993US5227537 Method for the production of 6,12-dihydro-6-hydroxy-cannabidiol and the use thereof for the production of trans-delta-9-tetrahydrocannabinol
07/13/1993US5227536 Process for preparing hydroxybenzocyclobutenes
07/13/1993US5227458 Polycarbonate from dihydroxydiphenyl cycloalkane
07/13/1993CA1320216C Preparation of bisphenols
07/13/1993CA1320215C Process for making 3,5-dialkyl-4-hydroxy-benzyl -substituted aromatics
07/06/1993US5225607 Multistage etherification or dehydrohalogenation and reductive dechlorination
07/06/1993US5225601 Sulfur containing compounds for skin disorders
06/1993
06/30/1993EP0548986A1 Process for producing phenol and methyl ethyl ketone
06/30/1993EP0548807A1 Method for preparing dihydric phenols
06/29/1993CA1319708C Process for preparation of resorcinol
06/24/1993WO1993012060A1 Novel inclusion compound comprising tetrakisphenol as host
06/23/1993EP0547479A2 Process for cracking polycarbonates
06/23/1993CN1073357A Tocotrienols and tocotrienol-like compounds and methods for their use
06/23/1993CN1021345C Lubricant composition using high tbn, low viscosity, group 2 metal overbased sulfurized alkylphenols as active constituent
06/23/1993CN1021325C Process for preparing ethynylphenyl-containing retinoic acid derivatives
06/16/1993EP0546639A1 A process for the preparation of bisphenols
06/16/1993EP0419631B1 A process for synthesising 9,9-bis(4-hydroxyphenyl) fluorene
06/16/1993CN1073161A Endothelin receptor antagonists
06/15/1993US5220079 Process for para-methylolating phenol compounds
06/15/1993US5219978 Poly(arylene ether)from 9,9-bis(3,5-diphenyl-4-hydroxyphenyl)fluorene
06/15/1993CA1319152C Organic synthesis
06/10/1993WO1993011258A1 Method for assaying the sod activity by using a self-oxidizable compound necessary for its implementation, self-oxidizable compounds and preparation thereof
06/09/1993EP0364548B1 Octafluorobiphenyls
06/02/1993EP0544488A2 Substituted phenyl phenol leukotriene antagonists
06/02/1993EP0544074A1 Process for the preparation of ortho substituted alkylphenols and catalyst therefor
06/01/1993US5215924 Method for the determination of an ion with increased sensitivity, use of substances which are suitable for this and a corresponding agent
06/01/1993CA1318687C Process for isomerizing the by-products of the bis-phenol synthesis
05/1993
05/27/1993WO1993009777A1 Tocotrienols and tocotrienol-like compounds and methods for their use
05/27/1993CA2124086A1 Tocotrienols and tocotrienol-like compounds and methods for their use
05/26/1993EP0543417A1 Tocotrienols and tocotrienol-like compounds and methods for their use
05/26/1993EP0543345A1 Substituted pentaalkylchromanes
05/26/1993CN1020893C Improved process for preparing vinyl ethers
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