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Patent Searching and Data


Matches 1,051 - 1,100 out of 7,054

Document Document Title
WO/2003/068713A1
The invention relates to a method for production of a liquid composition of an ortho-dihydroxybenzyl compound of high purity and said composition. More particularly The invention relates to the production of a liquid composition of pyroc...  
WO/2003/066555A1
The specification provides a method for producing p-cumylphenol phenol by reacting phenol with &agr -methylstyrene in the presence of a highly efficient heterogeneous aluminum zirconium catalyst.  
WO/2003/066554A1
The goal of this invention is to produce phenol of high purity by conversion of impurities that are present in the starting phenol, which is produced by the decomposition of cumyl hydroperoxide. The indicated goal is achieved by purifyin...  
WO/2003/064358A1
Fluorenone is condensed with a phenol [e.g., 2−(C1−4 alkyl)phenol] in the presence of both of a thiol and an aqueous hydrochloric acid solution to produce a fluorene derivative &lcub e.g., 9,9−bis[(C1−4 alkyl)hydroxyphenyl]fluore...  
WO/2003/062443A2
The present invention includes compounds, methods of making the compounds, compositions including the compounds and/or use of the compounds and compositions, wherein the compounds of the following formulas: (I) or (II) or (III).  
WO/2003/062143A1
The present invention relates to a non-hazardous brominating reagent from an aqueous alkaline bromine byproduct solution obtained from bromine recovery plant and containing 25 to 35 % bromine dissolved in aqueous lime or sodium hydroxide...  
WO/2003/055601A1
A catalyst for bisphenol compound production which has high activity and has resistance to heavy ingredients and alcohols; and a process for producing a bisphenol compound with the catalyst. The catalyst is obtained by modifying a sulfon...  
WO/2003/055603A1
The invention relates to a method for separating and recycling catalyst components of a chemical reaction mixture involving oxidative direct carbonylation.  
WO/2003/055602A1
The invention relates to a method for separating and recycling catalyst components from a chemical reaction mixture. Said method is characterised in that it comprises at least one extraction step.  
WO/2003/055849A1
The invention relates to a method for the production of solutions a quaternary cation and an anion from a deprotonated hydroxy aromatic in an organic solvent by a reactive extraction of a quaternary salt in the presence of an aqueous hyd...  
WO/2003/053892A1
Process for preparing alkylated aromatic compounds which comprises reacting an aromatic compound with a ketone and hydrogen in the presence of a catalytic composition comprising a solid acid material and copper. A preferred aspect is to ...  
WO/2003/048094A1
A system for purifying a cumene hydroperoxide cleavage product mixture comprises a cumene hydroperoxide cleavage product mixture feed (16) containing impurities in fluid communication with an aqueous alkaline solution feed (18); the cume...  
WO/2003/045883A1
A process for making a compound of Formula (I) by oxidative coupling of a compound of the formula (II) in the presence of a molecular oxygen-containing gas and a copper-containing catalyst produced by contacting a copper halide salt with...  
WO/2003/045882A1
A system for purifying a cumene hydroperoxide cleavage product mixture comprises a cumene hydroperoxide cleavage product mixture feed (16) containing impurities in fluid communication with an aqueous alkaline solution feed (18); the cume...  
WO/2003/046049A1
A polymeric, phosphorus-containing composition derived from aryl to aryl coupling of a substituted 2,2'-dihydroxyl-1,1'-binaphthalene or a substituted 2,2'-dihydroxyl-1,1'-biphenylene and phosphonylated at the dioxyl of said structure wi...  
WO/2003/045885A1
The compositions 3-alkylated-5,5',6,6',7,7',8,8'-octahydro-2,2'-binaphthol and 3,3'-dialkylated-5,5',6,6',7,7',8,8'-octahydro-2,2'-binaphth ol are disclosed, as well as various processes for making them, all involving the alkylation of 5...  
WO/2003/045884A1
A process for making a compound of the formula (I).  
WO/2003/043960A2
A purification method is disclosed for a predetermined water-insoluble extractant present in a liquid phase composition that additionally contains one or more additional extractants, synthesis reaction starting materials, and reaction by...  
WO/2003/043964A1
In a process for producing bisphenol A which comprises the reaction step, the step of removing low−boiling components, the concentration step, the crystallization&sol solid−liquid separation step, the heat melting step, the phenol−...  
WO/2003/043965A1
The invention relates to a method for producing o-alkylphenols by reacting phenol with an alkanol at an elevated temperature in the gaseous phase and in the presence of a metal oxide catalyst, whereby the reaction is carried out in at le...  
WO/2003/042146A1
A process is described for preparing hydroxylated aromatic compounds by means of the direct oxidation of an aromatic substrate with hydrogen peroxide in a triphasic reaction system, in the presence of a TS-1 zeolitic catalyst.  
WO/2003/039729A1
A process for preparing particles of a substance comprising contacting a first formulation including a first substance with a first solvent stream and a second solvent stream, thereby causing formation of particles of the first substance...  
WO/2003/035592A1
A method of depolymerizing an aromatic polycarbonate which comprises reacting the aromatic polycarbonate with water, a C1−6 aliphatic alcohol, or a phenol optionally substituted by a C1−10 hydrocarbon group in a supercritical carbon ...  
WO/2003/035733A1
The present invention relates to a process for improving the shelf life of a hindered phenol antioxidant comprising the step of intimately mixing the hindered phenol antioxidant with a sulfur-containing peroxide decomposer. The inventors...  
WO/2003/031057A1
A metal oxide catalyst precursor composition comprises a pore former and a catalyst reagent.  
WO/2003/026632A2
The invention provides substituted phenol compounds and pharmaceutical compositions containing substituted phenol compounds which are useful for inducing or maintaining anesthesia or sedation in a mammal. This invention also provides met...  
WO/2003/024592A2
One aspect of the invention relates to catalyst composite containing a metal catalyst and a specifically defined carbon support containing a carbonaceous material. For example, the carbon support may have a total pore surface area of abo...  
WO/2003/024908A1
Low-particulate dihydric aromatic compounds such as bisphenol A that can be used in the synthesis of low-particulate polycarbonates are prepared by introducing into a desorber column containing a non-aggregate packing material an adduct ...  
WO/2003/014049A1
A method for producing bisphenol−A through the continuous feed of phenol and acetone to a reaction unit having at least two reaction regions, wherein an acidic cation exchange resin in which 15 to 50 % of the acid points in the resin i...  
WO/2003/013749A1
The invention provides a process for the removal of one or more chlorinated phenols, such as pentachlorophenol (PCP) or tetra chlorophenol (TCP), from a solid matrix, such as soil. The process includes contacting the solid matrix at a pH...  
WO/2003/014050A1
A 2,6−dimethylphenol composition which has an m−cresol content of 15 to 700 ppm by weight. It has significantly improved activity in polymerization and, in particular, has the remarkable effect of improving the color tone of polyphen...  
WO/2003/011801A2
Process for the preparation of isopropanol, wherein a benzene-contaminated feed of acetone is hydrogenated to obtain isopropanol and hydrogenation products of benzene. Combination of such a process with a process for the preparation of p...  
WO/2003/005960A2
Novel bicyclic-cannabinoids and hexahydrocannabinol analogs are presented. These compounds, when administered in a therapeutically effective amount to an individual or animal, results in a sufficiently high level of that compound in the ...  
WO/2003/006406A1
Industrial applications of nitrous oxide, e.g. the hydroxylation of benzene to phenol, require large quantities of nitrous oxide having a very low impurity content.According to the invention, nitrous oxide which is obtained by reaction o...  
WO/2003/002499A1
A process for the manufacture of a hydroxy-substituted organic compound comprising decomposing an organic hydroperoxide, preferably a compound of the formula Ar-C(CH¿3?)¿2?O¿2?H, wherein Ar is a substituted or unsubstituted mononuclea...  
WO/2003/000633A2
The components of cigarette smoke, known until now, do not explain the overwhelming hazardous effects of smoking; this invention describes the isolation, identification and procedures for determination of the structure, properties and as...  
WO/2002/103349A1
A separatory agent for optical isomers which has the high optical resolving ability inherent in polysaccharide derivatives, has solvent resistance, and has high solubility in a reaction solvent and satisfactory filterability, i.e., is ad...  
WO/2002/102751A2
A process for removing methylbenzofuran from phenol comprissing: - treating the phenol stream to reduce the level of acetol, - passing the phenol stream through a fixed bed of strong acid aromatic sulfonic acid resin, - distilling the ph...  
WO/2002/098830A1
The present invention relates to a method for isolating of phenolic sunstances or juvabiones from wood comprising knotwood, said method comprising the steps of a) extracting i) the over-sized chip fraction obtained by screening chipped w...  
WO/2002/096847A1
The present invention relates to a process for preparing bisphenols which comprises reacting a carbonyl compound containing at least two carbon atoms with an aromatic compound, containing a hydroxyl group and at least one hydrogen atom b...  
WO/2002/092546A1
A method of preparing cumylphenol comprises reacting phenol and alpha-methylstyrene in the presence of an acid catalyst and an alkylbenzene. The method provides an inexpensive, selective process to cumylphenol.  
WO/2002/090303A1
A method for determining the quantity of phenol extracted into an aqueous solution of an alkali metal hydroxide uses a measurement of the pH of the solution, from which the equivalents of phenol relative to alkali metal hydroxide in solu...  
WO/2002/085828A1
A method for regenerating deactivated sulfonated cation exchange catalysts comprises washing the deactivated catalyst with phenol-water mixtures comprising about 5-20 wt.% of water in phenol at a temperature of about 70-95°C.  
WO/2002/085830A1
A process for producing bisphenol A which comprises condensing phenol with acetone using as a catalyst an acid-form ion-exchange resin partially modified with a sulfurized amine compound, characterized in that when the acetone has a meth...  
WO/2002/086037A1
The invention relates to a method for purifying a phenol derivative that is selected from among alkyl phenols with an average molecular weight of from 200 to 4000 and the Mannich adducts thereof. The inventive method is characterized by ...  
WO/2002/085829A1
A process for production of dimers of aromatic monohydroxyl compounds, characterized by conducting the oxidative coupling of an aromatic compound represented by the general formula [I]: Ar-OH [I] (wherein Ar is an optionally substituted ...  
WO/2002/083611A1
A process for the manufacture of a polyphenol compound such as bisphenol-A by introducing into a reaction zone a phenolic compound reactant, a carbonyl compound reactant, and a catalyst promoter comprising a dithioketal compound, and rea...  
WO/2002/081047A1
The invention relates to a method for eliminating oxygenated organic molecules, such as organic acids and alcohols, which are present in a liquid or gaseous organic effluent. The inventive method is characterised in that the elimination ...  
WO/2002/079130A1
The present invention relates to a process for the preparation of alkylated dihydroxybenzene by alkylating dihydroxy benzene with tertiary butyl alcohol in the presence of a solid/acid polymer catalyst.  
WO/2002/072516A1
A method for producing bisphenol A through condensing phenol and acetone using a sulfonic acid based ion exchange resin as a catalyst and a mercaptan as an auxiliary catalyst, characterized in that use is made of a sulfonic acid based io...  

Matches 1,051 - 1,100 out of 7,054