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Patent Searching and Data


Matches 951 - 1,000 out of 7,061

Document Document Title
WO/2005/047222A1
[PROBLEMS] To provide a process for bisphenol A production in which a cation-exchange resin catalyst used in a reaction step is inhibited from deteriorating and bisphenol A can be stably produced for long. [MEANS FOR SOLVING PROBLEMS] Th...  
WO/2005/042154A1
A method of preparing a modified catalyst for bisphenol A production that is free from damaging of strongly acidic ion exchange resin, realizes uniform modification of strongly acidic ion exchange resin and excels in catalytic performanc...  
WO/2005/042454A1
Disclosed is a method for producing a 2,2'-dihydroxybiphenyl by oxidatively coupling two phenol molecules comprising a hydrogen atom in an ortho position with the aid of a peroxide at 0 °C to 100 °C in the presence of water. The invent...  
WO/2005/040080A1
Disclosed is a method for preparing a bis(hydroxy-aromatic) compound which comprises the steps of. contacting at least one hal o- substituted hydroxy-aromatic compound in a solvent mixture comprising water and at least one organic solven...  
WO/2005/040079A1
A method for preparing and isolating dihydroxybiaryl compounds, such as 4,4'-dihydroxybiphenyl, is disclosed. The alkali metal salt of the dihydroxybiaryl compound is protonated with the monohydroxyaryl halide compound initially used in ...  
WO/2005/040102A2
The present invention relates to novel compounds of formula (I) and their pharmaceutically acceptable salts, wherein ring “Ar1” represents a monocyclic or polycyclic aromatic or partially saturated aromatic polycyclic, which may opti...  
WO/2005/037754A1
Disclosed is a simple and efficient method for commercially producing high-purity 2,3,6,7,10,11-hexahydroxytriphenylene. The method for producing 2,3,6,7,10,11-hexahydroxytriphenylene is characterized by reacting catechol with peroxide.  
WO/2005/037755A2
The present invention is directed to 1&agr ,25-dihydroxyvitamin D3 mimics which modulate the vitamin D receptor (VDR). The invention is further directed to pharmaceutical compositions and methods for the treatment, prevention or ameliora...  
WO/2005/035119A2
Disclosed herein are zeolite compositions comprising structural units of the formulae: Formula (I), (II), (III) wherein 'B' and 'C' are spacer groups comprising C2 to C20 hydrocarbyl groups; and R1 and R2 independently of each other comp...  
WO/2005/033052A1
An industrially advantageous process for producing a tetraalkylbiphenol (TABP) in which an unreacted dialkylphenol (DAP) can be repeatedly recovered and reused. The process comprises: a step (A) in which a DAP is oxidatively dimerized wi...  
WO/2005/030687A1
The present invention discloses a method for preparing bisphenol A, which comprising the following steps: sending phenol and acetone to reaction zone with condensation catalysts to give a stream containing bisphenol A; sending this strea...  
WO/2005/028107A1
A method for preparing hydroxyaromatic compounds brominated in the para-position, such as p-bromophenol, is disclosed. The method yields overall high process selectivity through isomeric equilibration and separation of the brominated pro...  
WO/2005/026237A1
A process for producing bisphenol A which comprises reacting phenol with acetone. The reaction is conducted at a higher temperature while maintaining high selectivity to thereby attain high productivity. Also provided are: a cation-excha...  
WO/2005/026105A2
A process for making a compound of formula I wherein R1, is CN, F or CI; R2 is H or Br; and R3 and R4 are each independently H or F. These compounds are useful in the treatment of chronic inflammatory diseases, such as rheumatoid arthritis.  
WO/2005/023740A2
A novel process for the preparation of resveratrol and piceatannol and esters thereof involving a Heck type reaction is disclosed. Also disclosed are novel intermediates in that process.  
WO/2005/023739A1
A method for selectively brominating hydroxyaromatic compounds is disclosed. Hydroxyaromatic compounds are contacted with oxygen and a bromine source, in an acidic medium, in the presence of a catalyst selected from the group of compound...  
WO/2005/023424A1
A method of preparing a modified catalyst for bisphenol A production by partially modifying a strongly acid ion-exchange resin with a sulfurized amine compound. It comprises packing a strongly acid ion-exchange resin into a fixed-bed rea...  
WO/2005/023738A1
A method for brominating hydroxyaromatic compounds to form products, such as p­bromophenol, is disclosed. The method uses elemental bromine as the brominating agent and comprises contacting a hydroxyaromatic compound with bromine and ox...  
WO/2005/021478A1
The invention relates to polycarbonates and copolycarbonates having reduced water absorption and improved flowability, methods for the production thereof, the use thereof for producing certain products, and the products obtained therefro...  
WO/2005/016996A1
Disclosed herein are silicone resins comprising structural units of the formulae (I), (II), (III), (IV), (V): at least one structural unit selected from the group consisting of: where 'A' is a spacer group comprising C2 to C50 alkyl grou...  
WO/2005/016860A2
The invention relates to stilbene derivatives of general formula (I), in which at least four of the substituents R1 to R6 do not represent hydrogen. The substituents are effective radical captors, anti-tumour active ingredients and selec...  
WO/2005/014568A2
A process for the production of a disubstituted hydroquinone which comprises alkylating hydroquinone in the presence of a sulphonic acid condensation catalyst with an olefin or a substance which under the reaction conditions acts as a so...  
WO/2005/012250A1
A process for the production of pyridylethylthio compounds which is improved in yield, that is, a process for the production of pyridylethylthio compounds by reacting vinylpyridine with a sulfur compound, wherein the vinylpyridine used a...  
WO/2005/009936A1
An alkylation catalyst comprises a metal oxide wherein the catalyst has a surface area to volume ratio of about 950 m2/m3 to about 4000 m2/m3.  
WO/2005/005359A1
An improved method for the recovery of phenol from aqueous streams comprises adding a relatively non-polar solvent to a phenol containing aqueous stream to improve the separation of the phenol form the aqueous stream. The improvement res...  
WO/2005/005355A1
A process for the preparation of a compound of formula (I) wherein R is a hydrogen or a C1-6 alkyl group which is straight chain, branched or cyclic, with or without an oxygen, nitrogen or sulphur heteroatom anywhere in the chain or ring...  
WO/2005/005357A1
To improve energy efficiency of prior art processes while preserving the standards of quality and total yield of desired end products, a process for the preparation of phenolic compounds is proposed comprising working-up of the cleavage ...  
WO/2005/005358A1
A process for the production of a bisphenol comprises reacting a feed comprising a phenol, a ketone and water in the presence of an ion exchange resin catalyst to produce an effluent; determining the para-para bisphenol selectivity of th...  
WO/2005/005356A2
Method of preparing an enantiomerically enriched compound of formula (II) comprising enantioselective hydrogenation of a compound of general formula (I): where W, X and Z have the meanings indicated in the description, to give a compound...  
WO/2005/000802A2
The invention relates to a method for the hydroxylation of phenolic compounds and, more specifically, a method for the hydroxylation of phenols and phenol ethers, using hydrogen peroxide. The inventive hydroxylation method consists in re...  
WO/2005/000775A2
The present invention is directed to novel cyclohexyl derivatives, pharmaceutical compositions containing them and their use in the treatment of disorders and diseases mediated by an estrogen receptor.  
WO/2004/113257A1
The invention provides a process by which ethynylbenzene derivatives can be simply produced from 3-chloro-3-substituted propenal derivatives under safe and environment-friendly conditions with low effluent loading and which is suitable f...  
WO/2004/113265A1
The present invention is directed to novel flame retardant monomers and polymers, wherein the flame retardant properties of the polymers are provided by functionality in pendant groups attached to a polymer backbone (as opposed to the po...  
WO/2004/108640A2
Use of a specific combination of catalysts for the first and second steps of the process for the conversion of CHP to BPA provides high yields of BPA and low impurity yields, without a requirement for the intermediate purification steps....  
WO/2004/108642A1
The invention relates to a method for producing a 2,2'-dihydroxy-biphenyl by the oxidative coupling of two phenol molecules, which have a hydrogen atom in an o-position, using a peroxide in the presence of water at a temperature ranging ...  
WO/2004/108641A1
Use of a specific combination of catalysts for the first and second steps of the process for the conversion of CHP to BPA provides high yields of BPA and low impurity yields, without a requirement for the intermediate purification steps....  
WO/2004/108643A1
A bisphenol A/phenol adduct is separated through crystallization from a reaction mixture. The resultant mother liquor is wholly subjected to isomerization and then recycled to a condensation reaction step, a concentration step, or a crys...  
WO/2004/103940A1
The present invention is directed to crystalline forms of anhydrous 4-­cyclopentyl resorcinol, the Form A and C polymorphs, formulations containing at least one of these crystalline forms and their use to lighten skin.  
WO/2004/103950A1
Partially protected trisphenols represented by the general formula (I): Wherein R1 is C1-C4 alkyl or C1-C4 alkoxy ; R2 is C1-C6 alkyl or C5-C6 cycloalkyl ; X1 is hydrogen, alkoxycarbonylmethyl whose alkyl has 1 to 4 carbon atoms, alkoxyc...  
WO/2004/094359A1
A method is described for the simultaneous preparation of p-bromophenols and p-benzoquinones, intermediates useful in the preparation of hydroquinones and 4,4’-dihydroxybiphenyls, respectively. Hydroquinones and 4,4’-dihydroxybipheny...  
WO/2004/094354A1
A method of purifying 2,6-dimethylphenol to remove the odorous impurities includes distilling a crude mixture to yield a first light fraction enriched in 2,6-dimethylphenol, and a first heavy fraction enriched in 2,4,6-trimethylanisole, ...  
WO/2004/092102A1
In a process for bisphenol A production which comprises cleaning with phenol a strongly acid ion-exchange resin partially modified with a sulfur-amine compound, subsequently condensing phenol with acetone in the presence of the cleaned i...  
WO2004076394B1
A process for recovering a solid adduct of a bis(4-hydroxyaryl)alkane and a phenolic compound from a suspension comprising the addict is disclosed. The process comprises the steps of a) supplying the suspension to a rotary filter, b) fil...  
WO2004064695A9
Brominated hydroxyaromatic compounds such as p-bromophenol are prepared by contacting a hydroxyaromatic compound with oxygen and a bromine source such as hydrogen bromide or an alkali metal or alkaline earth metal bromide in an acidic me...  
WO/2004/092101A2
A cyclodextrin-olivetol derivative complex is provided. The complex effectively blocks reaction at specific carbons to prevent unwanted reactions. A process for preparing a cannabinoid compound is further provided. The process comprises ...  
WO/2004/085357A1
The invention aims at providing a process for the production of bisphenol A, more specifically a process for the production of bisphenol A having a high purity and a good hue. The process comprises the crystallization step of forming a s...  
WO/2004/078345A1
This disclosure relates to a method for producing and using catalysts in the production of bisphenols, and in particular to a method for producing catalysts which contain poly-sulfur mercaptan promoters, and using these catalysts in the ...  
WO/2004/074227A1
A process for cleaving an oxidation product comprising s-butyl benzene Hydroperoxide and /or cumene hydroperoxide which reduces the production of non-recoverable by-products from dimethylbenzyl alcohol (DMBA) and ethyl methyl benzyl carb...  
WO/2004/074230A1
A process for producing controllable yields of (a) phenol and methyl ethyl ketone (MEK) or (b) phenol, acetone, and MEK, said process comprising the steps of: feeding an oxidation feed to an oxidation reactor to produce an oxidation mixt...  
WO/2004/074241A1
A process for oxidation of alkylbenzenes to produce hydroperoxides comprising : providing an oxidation feed consisting essentially of n organic phase, said oxidation feed comprising one or more alkylbenzenes and a quantity of neutralizin...  

Matches 951 - 1,000 out of 7,061