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WO/2000/044670A1 |
The invention relates to a method for preparing MCM-48-type mesoporous titanosilicates which may or may not have organic groups on their surfaces. Titanium may be incorporated through direct synthesis by adding titanium precursor to the ...
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WO/2000/043122A1 |
The invention provides transition metal substituted polyoxofluorometallates, a process for their preparation, and a process for the catalytic epoxidation of an alkene comprising contacting a transition metal substituted polyoxofluorometa...
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WO/2000/039072A1 |
A method for preparing a compound of formula (IXa) from a compound of formula (VIIa), and preparation of intermediates useful in the method.
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WO/2000/035893A1 |
A process and catalysts for the direct oxidation of an olefin having three or more carbon atoms, such as propylene, by oxygen to an olefin oxide, such as propylene oxide. The process involves contacting the olefin under reaction conditio...
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WO/2000/035894A1 |
The invention relates to an integrated method for producing epoxidised olefins. In a first step, diluted hydrogen peroxide solutions are produced from the elements hydrogen and oxygen and are converted to epoxidised olefins in a subseque...
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WO/2000/035844A1 |
A process for making 2,3-dihalopropanol including reacting 2,3-dihalopropanal with a hydrogenating agent in the presence of an iridium and a second transition metal mixed metal catalyst where the second transition metal is selected from ...
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WO/2000/035846A1 |
A process for hypochlorinating unsaturated alpha-olefins to produce chlorohydrins which comprises forming a microemulsion of water and an unsaturated alpha-olefin and then adding an oxidant to the microemulsion under conditions sufficien...
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WO/2000/034181A1 |
The present invention relates to a microporous material formed by oxygen, silicon, germanium, aluminium, boron, gallium, zirconium and/or titanium and is called TIQ-2. The invention also relates to the process for its preparation and to ...
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WO/2000/031056A1 |
The invention relates to a method of producing epoxy resins from hydrocarbons with olefinic double bonds, especially alkenes, by heterogeneous catalyzed oxidation in the gaseous phase. According to said method, an oxidic solid catalyst i...
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WO/2000/031057A1 |
The invention concerns a continuous method for making an oxirane which consists in: reacting for a time interval of more than 48 hours and at a temperature higher than 35 °C an olefin with a peroxidised compound in the presence of a zeo...
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WO/2000/024726A1 |
The invention relates to a method of epoxidizing olefins with percarboxylic acid in a reaction mixture consisting of an aqueous phase and an organic phase. According to said method, the percarboxylic acid in the aqueous phase is formed i...
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WO/2000/021944A2 |
A process for selectively oxidizing an organic molecule by reacting said organic molecule and oxygen in the presence of a selective oxidation catalyst supported on a mesh-like structure.
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WO/2000/021945A1 |
The invention relates to a method for oxidizing an organic compound or a mixture of two or more organic compounds having a C-C double bond, comprising the following step (II): reacting the organic compound or the mixture of two or more o...
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WO/2000/020404A1 |
An integrated process is provided for the production of propylene oxide from propane wherein propane is dehydrogenated to propylene and hydrogen and the resulting propylene, propane, and hydrogen mixture together with added oxygen is rea...
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WO/2000/017180A1 |
The invention relates to a method for the continuous production of an aqueous ethylene oxide solution by absorbing ethylene oxide from a gaseous mixture containing 1.5 to 4 mole percent, preferably 2.5 to 3 mole percent of ethylene oxide...
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WO/2000/017179A1 |
A process for the manufacture of glycidylesters of branched monocarboxylic acids, comprising (a) the reaction of the $g(a)-branched monocarboxylic acid with a halo substituted monoepoxide such as an epihalohydrin (e.g. epichlorohydrin), ...
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WO/2000/017178A1 |
The selectivity of an olefin epoxidation process catalyzed by a titanium-containing zeolite is improved by performing the epoxidation in the presence of a non-ionic tertiary amine or tertiary amine oxide additive. For example, when hydro...
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WO/2000/017177A1 |
The invention relates to a method for optimizing the specific energy consumption of a method for producing ethylene oxide by direct oxidization of ethylene with air or oxygen, using water as the heat transfer medium for removing the heat...
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WO/2000/015334A1 |
This invention relates to a process for depositing one or more catalytically reactive metals on a carrier, said process comprising selecting a carrier and depositing a catalytically effective amount of one or more catalytically reactive ...
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WO/2000/015332A1 |
A method for restoring lost activity and selectivity of fresh cesium-promoted catalysts which comprises heating the catalyst at an elevated temperature in the presence of a sweep gas immediately prior to using the catalyst. The catalysts...
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WO/2000/015335A1 |
There is provided a catalyst carrier comprising a refractory inorganic material having a sodium solubilization rate no greater than 5 ppmw/5 minutes. There is further a catalyst comprising a refractory inorganic material carrier having a...
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WO/2000/015333A1 |
This invention relates to a process for the preparation of a catalyst having improved properties, said process comprising selecting a carrier, lowering the concentration of ionizable species present on the surface of the carrier, and dep...
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WO/2000/012432A1 |
The invention relates to a method for producing a titanium silicate with RUT structure, which consists of the following steps: (i) preparation of a mixture of at least one SiO¿2? source and at least one titanium source; and (ii) crystal...
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WO/2000/010987A1 |
An aqueous solution of 2,3-Epoxypropyltrimethylammonium chloride having reduced color and method of preparation are disclosed. 2,3-Epoxypropyltrimethylammonium chloride is treated with sodium hypochlorite to reduce its color. 2-3-Epoxypr...
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WO/2000/010985A1 |
The invention relates to a chiral sulphide catalyst, having the structure of formula (IIa) or (IIb) or (IIc) or (IId), wherein X represents a hydrogen atom, alkyl, alkoxy, aryl or alkylaryl group, or a dialkyl nitrogen; Y is a side chain...
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WO/2000/009463A1 |
The present invention relates to a process for stereoselective or regioselective chemical synthesis which generally comprises reacting a nucleophile, selected from the group consisting of water, alcohols, carboxylic acids, and thiols, an...
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WO/2000/007964A1 |
The invention relates to a method for oxidizing hydrocarbons on a catalyst which contains silver and titanium and in the presence of a hydrogen-oxygen mixture. Said catalyst contains a) a supporting material which contains titanium and b...
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WO/2000/007965A1 |
The invention relates to a method for reacting an organic compound with a hydroperoxide, comprising at least the following steps (i) to (iii): (i) reacting the hydroperoxide with the organic compound to obtain a mixture composed of a rea...
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WO/2000/005226A1 |
This invention provides an improved gas phase feed process using heterogeneous catalysis for the selective epoxidation of non-allylic olefins wherein the epoxidation is carried out in the presence of branched-chain alkane or cyclic aliph...
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WO/2000/005186A1 |
Process for the joint preparation of styrene and propylene oxide comprising the steps of: (a) reacting ethene and benzene to form ethylbenzene; (b) reacting ethylbenzene with oxygen or air to form ethylbenzene hydroperoxide; (c) reacting...
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WO/2000/005227A1 |
This invention relates to a process for manufacturing an optically active (S)-3,4-epoxybutyric acid salt and more particularly, to a method for manufactuing (S)-3,4-epoxybutyric acid salt expressed by formula (1), wherein an optically ac...
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WO/2000/003802A1 |
The invention concerns recyclable solid oxidation catalysts comprising a metal compound of a pentavalent or hexavalent metal M and selected among the group consisting of tantalum, vanadium, niobium, chromium, molybdenum, tungsten, grafte...
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WO/2000/002872A1 |
The invention relates to a novel manganese oxidation catalyst of the general formula: (LMnX¿n?)S wherein: Mn is manganese; L is a triazacycloalkane, the carbon skeleton thereof comprising at least 6 C atoms; substituted on two of the th...
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WO/2000/001650A1 |
The invention provides a method of producing $g(a)-tocopherol and $g(a)-tocopheryl esters and a method of producing vitamin A or $g(b)-carotene. The methods comprise using a biological system to produce farnesol or geranylgeraniol. Then,...
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WO/2000/001649A1 |
The invention provides a method of producing $g(a)-tocopherol and $g(a)-tocopheryl esters. The method comprises using a biological system to produce farnesol or geranylgeraniol. Then, the farnesol or geranylgeraniol is chemically convert...
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WO/2000/001685A1 |
The invention provides methods for producing tocopherol compounds of the Vitamin E family by reduction of various 4-chromanone trienol materials. In preferred embodiments the invention provides methods of preparing and hydrogenating 4-ch...
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WO/2000/001681A1 |
The invention relates to a method for producing propene oxide from propene and oxygen. According to a known method a gas stream containing propene and oxygen is guided over catalytically active materials. A disadvantage hereby is the low...
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WO/2000/001686A1 |
The invention provides processes for producing phytol, isophytol, and certain phytol derivatives by a method of oxidizing or epoxidizing geranylgeraniol or geranylgeraniol derivatives to form epoxygeranylgeraniol derivatives, reducing or...
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WO/1999/064376A1 |
The selectivity of an olefin epoxidation process catalyzed by a heterogeneous catalyst for example titanium silicalite is improved by performing the epoxidation in the presence of carbon dioxide. The catalysts used do not require regener...
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WO/1999/062894A2 |
A process for making an aromatic glycidyl ether epoxy compound by contacting an allyl ether made from the hydroxy moiety of a hydroxy-containing aromatic compound with an inorganic or organic hydroperoxide oxidant in the presence of a tr...
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WO/1999/062861A1 |
A process for producing protected 3-amino-1,2-dihydroxypropane acetal, particularly in chiral forms, for use as an intermediate in the preparation of various 3-carbon compounds which are chiral. In particular, the present invention relat...
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WO/1999/052886A1 |
A method for kinetically resolving a stereoisomer mixture of compounds using asymmetric epoxidation is provided. Compounds contain an olefin moiety providing one stereoisomer to be epoxidized at a higher rate than the other stereoisomer ...
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WO/1999/052626A1 |
A method for producing a shaped body, consisting of at least one porous oxide material, preferably a titanium silicate, and at least one metal oxide, comprising the following step (i): (i) the porous oxide material is mixed with at least...
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WO/1999/052885A1 |
The selectivity of an olefin epoxidation catalyzed by a noble metal-modified titanium or vanadium zeolite is greatly enhanced by the addition of a nitrogen compound to the reaction mixture. The epoxidation utilizes hydrogen and oxygen in...
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WO/1999/052884A1 |
The selectivity of an olefin epoxidation catalyzed by a noble metal-modified titanium or vanadium zeolite is greatly enhanced by the addition of a phosphorus, sulfur, selenium or arsenic compound to the reaction mixture. The epoxidation ...
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WO/1999/052883A1 |
A process for the direct oxidation of an olefin, such as propylene, by oxygen to the corresponding olefin oxide, such as propylene oxide. The process involves contacting the olefin with oxygen under reaction conditions in the presence of...
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WO/1999/052840A1 |
The asymmetric production of pure diastereomeric (2R, 3R), (2R, 3S), (2S, 3R) and (2S, 3S)-2-aryl-1-substituted butan-2,3-diols from the derivatives of lactic acid.
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WO/1999/051557A1 |
A process for treating a mixed olefin and paraffin feedstock includes reacting, in a reaction zone and in a liquid phase, a mixed olefin and paraffin feedstock comprising an olefin and a paraffin, with a peroxidation component. Thereby i...
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WO/1999/049972A1 |
Process for activating an at least partly deactivated heterogeneous titanium-containing catalyst for the epoxidation of propene into propylene oxide, which process comprises adding a titanium compound to the liquid feed of an epoxidation...
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WO/1999/048884A1 |
Process for epoxidation of olefinic compounds with hydrogen peroxide in the presence of solvents, preferably C¿1?-C¿8? alcohols, using silica-supported titanium catalysts, prepared by impregnation of the silica with the use of disoluti...
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