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)
07/2001
07/05/2001WO2001047851A1 Fluidised bisphenol dust
07/05/2001DE19962530A1 Fluidisierter Bisphenol-Staub Fluidised bisphenol dust
07/04/2001EP1112993A1 Process for producing 3,3',5,5'-tetra-t-butylbiphenol
07/04/2001CN1302285A Bisphenol cracking method
07/04/2001CN1301599A Titanium-silicon molecular sieve and its preparing method
07/03/2001US6255539 Chemical composition and process
07/03/2001US6255517 Thymol derivatives having anti-tumor activity, and anti-cancer agent comprising the same
07/03/2001US6255439 Compounds prepared from cashew nut shell liquid; used to prepare polycarbonates
07/03/2001US6255438 Phenolic compounds, polymers derived therefrom, and method
07/03/2001US6254853 Drugs with carriers
07/03/2001CA2006222C Enhanced chemiluminescence from 1,2-dioxetanes through energy transfer to tethered fluorescers
06/2001
06/28/2001WO2001046118A1 Lead halophenoxides and carbonylation catalyst and method for preparing and employing them
06/28/2001WO2001046106A1 High purity 4,4-isopropylidene-bis-(2,6 dibromophenol) and process for the preparation of such high purity 4,4-isopropylidene-bis-(2,6 dibromophenol)
06/28/2001WO2001046105A1 Bisphenol phenol adducts
06/28/2001WO2001046104A1 Bis(4-hydroxyaryl)alkanes
06/28/2001WO2001046103A1 (hydroxyalkyl)phenols, method for their preparation, and uses thereof
06/28/2001WO2001046102A1 Production of phenol using reactive distillation
06/28/2001WO2001046101A1 Stable bisphenolic compositions
06/28/2001WO2001046100A1 Method for producing phosphonium phenolates
06/28/2001US20010005765 Method for producing phosphonium phenolates
06/28/2001CA2392817A1 Stable bisphenolic compositions
06/27/2001EP1110937A1 Method for cleavage of bisphenol
06/27/2001EP1110910A1 A titanium-silicalite molecular sieve and the method for its preparation
06/27/2001EP1109816A1 Vinyl substituted cyclic products of the ene-yne reaction
06/27/2001EP1109770A1 A method for preparing bisphenol a
06/27/2001EP1109769A1 Method for producing bis(4-hydroxyaryl)alkanes
06/27/2001EP1109768A1 Purification of alkylated phenols by melt crystallization
06/27/2001CN1300729A Preparation of high purity bisphenol A
06/27/2001CN1067675C Oil-soluble tea polyphenol and its preparation
06/27/2001CN1067674C Synthesis of p-cresol by direct alkali fusion method from toluene-p-solfonic acid.
06/26/2001US6252124 Wasteless economic method of production of phenol and acetone
06/21/2001US20010004670 Electron-withdrawing group present on carbonyl compound is selected from fluoroalkyl derivatives, esters, including orthoesters, and nitrites and condensation is carried out in basic medium
06/21/2001DE19961566A1 Use of a desorber with optionally series-connected distillation unit for separation of bis-phenol, e.g. Bisphenol A, and phenol from adducts of bis-phenol and phenol
06/21/2001DE19961521A1 Isolation and purification of bisphenol-phenol adducts, e.g. for production of Bisphenol A, involves separation from mother liquor in a rotary vacuum filter, washing the crystals and removing washings by suction
06/21/2001DE19961520A1 Phosphonium phenolate compounds,useful as catalysts for the production of polycarbonate, are prepared by crystallization of the product from the phosphonium halide and phenol reaction mixture.
06/20/2001EP0876319B1 Improved process for the production of bisphenols
06/20/2001EP0868417B1 Method to prepare ortho substituted phenol
06/19/2001US6248573 Sulfonylating or halogenating a (s)-1-phenyl-2-propanol derivative to produce (s)-1-phenyl-2-substituted propane derivative; chemical intermediate for synthesis of antiobesity drug
06/14/2001US20010003360 Styrene monomer polymerization inhibition using substituted dihydroxyarenes and nitroxides
06/13/2001CN1298857A Process for preparing 4-methyl catechol
06/12/2001US6245951 Process for cleaning bisphenol pre-reactor
06/12/2001US6245950 Process for the preparation of tetrabromobisphenol-A
06/07/2001WO2001040156A1 High-quality bisphenol a and process for producing the same
06/07/2001WO2001040155A1 Initiation method of a method for producing 2,2-bis(4-hydroxyphenyl)propane
06/07/2001WO2001040154A1 Method for producing 4'-alkyl-4-hydroxy-biphenyl derivatives
06/07/2001DE19958061A1 Verfahren zur Herstellung von 4'-Alkyl-4-hydroxy-biphenylderivaten Process for the preparation of 4'-alkyl-4-hydroxy-biphenyl derivatives
06/06/2001CN1298377A Preparation of polyindanebisphenols and polymers derived therefrom
06/06/2001CN1066705C Process for purification of bisphenol
06/06/2001CN1066704C Process for continuous production of high purity bisphenol A
06/06/2001CN1066703C Process for purification of phenol
06/05/2001US6242641 Cycloaliphatic compounds
06/05/2001US6242609 Ammonium trihalide for halogenation of color couplers and silver halide emulsions
06/05/2001US6242606 Reacting a a,a-dimethylphenylacetic acid amide with a w-halo compound produces w'-halo-a-keto-a,a-dimethylphenylacetic acid amide and reacting it with a piperidine compound; 2-(4-(4-chloro-butyryl)-phenyl)-2-methy-propionic acid
05/2001
05/31/2001WO2001037992A1 Method for conditioning ion exchangers
05/31/2001WO2001037629A2 High surface microporous materials which are active in oxidation reactions. tiq-6 and metiq-6
05/31/2001DE19957602A1 Start-up of bisphenol A production over sulfonated crosslinked polystyrene resin uses higher phenol concentration and lower acetone concentration and throughput than in optimum long-term operation
05/30/2001CN1296938A Process for preparing phenol from benzoic acid and recovering useful substances
05/29/2001US6239317 Process for the production of halogeno-o-hydroxydiphenyl compounds
05/29/2001US6239171 Tocotrienols and tocotrienol-like compounds and methods for their use
05/25/2001WO2001036424A2 Naphthopyrans having a perfluoroalkyl substituent in position 5, preparation and compositions and matrices containing them
05/25/2001WO2001036359A1 Optically active fluorinated binaphthol derivative
05/25/2001WO2001036358A1 Method for the production of bisphenol-a
05/25/2001CA2390109A1 Naphthopyrans having a perfluoroalkyl substituent in position 5, preparation and compositions and matrices containing them
05/23/2001CN1066131C Method for preparation of high-purity bisphenols
05/22/2001US6235946 Concurrent feeding of bisphenol a and solvent with hydrobromic acid and hydrogen peroxide
05/22/2001US6235945 Isomerization isopropenylphenol, dimers or oligomers, neutralization and isolation
05/17/2001WO2001034544A1 Bisphenol production
05/17/2001DE19954786A1 Schmelzkristallisation Melt Crystallization
05/17/2001DE19954311A1 Bisphenol-Herstellung Bisphenol-production
05/16/2001CN1065854C Separation of phend
05/10/2001WO2001032308A1 Immobilised ionic liquids
05/10/2001CA2388805A1 Immobilised ionic liquids
05/08/2001US6229055 Synthesis of fluorinated xanthene derivatives
05/03/2001WO2001030735A1 Method for purifying acetone
05/02/2001EP1095003A1 Cytokine production and tyrosine kinase inhibitors
05/01/2001US6225513 By oxidation with catalytic cleavage of cumene hydroperoxide; concentrated to cumene content, mixture is catalytically cleaved producing dicumyl peroxide and dimethylphenylcarbinol in a tubular reactor
05/01/2001US6225512 Isomerization of dimers or oligomers of isopropenylphenol in the presence of an acid catalyst(boron trifluoride), base neutralization, then recrystallization to isolate 3-(4-hydroxyphenyl)-1,1,3-trimethylindan-5-ol
05/01/2001US6225375 Preparation of low-dust stabilizers
05/01/2001CA2033021C A process and a catalyst composition of alkylating benzene or substituted benzene or transalkylating alkylated benzene
04/2001
04/26/2001WO2001028964A2 A liquid phase catalytic hydrogenation process to convert aldehydes to the corresponding alcohols
04/25/2001EP1094051A1 A liquid phase catalytic hydrogenation process to convert aldehydes to the corresponding alcohols
04/25/2001EP1066233A4 Improved process for the production of a dihydroxybenzene and dicarbinol from diisopropylbenzene
04/25/2001CN1292806A Method for producing liquid formulation of tetraphenylphosphonium phenolate
04/25/2001CN1064958C Method for preparation of taxol midbody
04/24/2001US6221374 Biologically active compound, polyphenolic compound, organic solvent carrier
04/19/2001WO2001027059A1 Process for cleaning bisphenol pre-reactor
04/17/2001US6218584 Brominating bisphenol a; discoloration inhibition with hydrogen bromide; precipitation; high yield
04/17/2001US6218431 Substituted biphenyls
04/17/2001CA2103044C Novel bi-aromatic compounds derived from a salicylic pattern, method of preparation and use in human and veterinary medicine and in cosmetics
04/12/2001US20010000260 Adding water and a diluent to form a separable crude phenolic bottoms stream having a combined density lower than the density of the bottoms; separating out a hydrocarbon phase and a salt-containing aqueous phase; phenols from peroxides
04/11/2001CN1290683A Use of bisphenol in preparing polycarbonic ester and opoxy resin
04/11/2001CN1290682A Method for preparing phenol, methyl-ethyl ketones and acetone
04/11/2001CN1290681A Method for preparing phenol, acetone and methyl-ethyl ketones
04/11/2001CN1290680A Method for preparing phenol
04/11/2001CN1064343C Process for producing o-isopropyl phenol
04/11/2001CN1064342C Process for producing o-secondary butyl phenol
04/05/2001DE19946888A1 Verfahren zur Herstellung von Phenol, Aceton und Methylethylketon A process for producing phenol, acetone and methyl ethyl ketone
04/05/2001DE19946887A1 Verfahren zur Herstellung von Phenol, Methylethylketon und Aceton A process for producing phenol, methyl ethyl ketone and acetone,
04/05/2001DE19946886A1 Verfahren zur Herstellung von Phenol A process for the production of phenol
04/04/2001EP1088809A1 Process for the preparation of phenol, acetone and methylethylketone
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