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WO/2004/009566A1 |
The invention relates to a method for the continuous purification by distillation of methanol, used as a solvent in the synthesis of propylene oxide by the reaction of a hydroperoxide with propylene and the simultaneous isolation of the ...
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WO/2004/009569A1 |
The invention relates to a continuous method for the intermediate separation of the oxirane produced by the reaction of a hydroperoxide with an organic compound, characterised in that the product mixture generated during the synthesis is...
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WO/2004/007369A1 |
The invention relates to a method for concentrating an at least partially crystalline solid containing at least one zeolite in a mixture, said mixture containing at least one auxiliary agent, for example a template compound, and the cite...
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WO/2004/002972A2 |
A method for the start-up of a process for the epoxidation of an olefin, which method comprises contacting a catalyst bed comprising a silver-based highly selective epoxidation catalyst, or a precursor of the catalyst comprising the silv...
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WO/2004/002974A1 |
A process for producing a glycidyl ether and an optically active substance thereof with high optical purity in high yield, comprising reacting an alcohol with epihalohydrin in the presence of a base to thereby produce a glycidyl ether, t...
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WO/2004/002954A2 |
A method for improving the selectivity of a supported highly selective epoxidation catalyst comprising silver in a quantity of at most 0.19 g per m2 surface area of the support, which method comprises - contacting the catalyst, or a prec...
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WO/2004/002973A1 |
The invention provides a process by which optically active 1-substituted amino-2,3-epoxypropanes useful as intermediates in the production of agricultural chemicals, drugs and so on can be efficiently produced with industrial advantage f...
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WO/2004/002971A1 |
A method for the start-up of a process for the epoxidation of an olefin, which method process comprises(a) pre-soaking a silver-based highly selective epoxidation catalyst with an organic halide, and (b) passing over the pre-soaked catal...
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WO/2004/000826A1 |
A compound represented by the following formula (I) is reacted with a trimethyloxosulfonium salt, etc. in the presence of a base to obtain a compound (II). The compound (II) is converted into a compound (IV). The compound (IV) is reacted...
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WO/2003/104238A1 |
A compound represented by the general formula (I): (I) wherein R represents linear, branched, or cyclic alkyl or aryl; a process for producing the compound; and an antitumor agent containing the compound as an active ingredient.
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WO/2003/101976A1 |
A process for producing an epoxide, characterized by comprising reacting an olefin with hydrogen peroxide in the presence of a tungsten oxide, the tungsten oxide obtained through reaction of at least one ammonium salt selected from the g...
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WO/2003/101975A1 |
The present invention relates to a process for the reaction of at least one organic compound with one oxygen-delivering substance, for example a hydroperoxide, in the presence of at least one catalyst containing a metal-organic framework...
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WO/2003/101977A1 |
The invention is a liquid-phase process for epoxidizing olefins with hydrogen peroxide in the presence of a non-zeolitic, supported niobium oxide catalyst comprising niobium oxide and a support. The process exhibits good productivity and...
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WO/2003/099719A1 |
The invention relates to a microporous crystalline zeolite material (ITQ-22) having, in the calcined state, empirical formula x (M1/nXO2): y YO2: z GeO2: (1-z) SiO2, wherein M is H+ or at least one inorganic cation of charge +n; X is at ...
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WO/2003/097624A1 |
The present invention relates to a novel process for preparing (R)-3,4-epoxy-1-butanol in particular, a process for preparing (R)-3,4-epoxy-1-butanol with relatively high yield and in a cost-effective manner, wherein (S)-3-alkyl or aryls...
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WO/2003/093255A1 |
The present invention relates to a process for the epoxidation of olefins by i) reacting an olefin with hydrogen peroxide in presence of an epoxidation catalyst and an alcoholic solvent; ii) separating product olefin oxide and unreacted ...
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WO/2003/091233A1 |
A process for producing an N-carbamate-protected 3-amino-1,2-epoxy-4-(hydroxyphenyl)butane with a high optical purity in a high yield, which comprises hydrogenating an N-carbamate-protected 3-amino-1-chloro-2-hydroxy-4-(benzyloxyphenyl)b...
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WO/2003/087075A1 |
Enantiomerically enriched trans-2,3-epoxyamides of the formula (I) in which R1 is a 1-18C aliphatic hydrocarbyl optionally substituted by one or more substituent groups selected from halo, nitro, phenyl and -ORW, where RW is H, 1-6C alky...
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WO/2003/087076A1 |
Process for the preparation of propylene oxide, which process comprises: (1) reacting alkyl aryl hydroperoxide with propene to yield propylene oxide and aryl alcohol, and (2) contacting at elevated temperature feed comprising aryl alcoho...
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WO/2003/086624A1 |
The invention relates to an ethylene oxide catalyst comprised of silver deposited on an alumina carrier which has been treated to remove at least 25 % of the surface sodium ions and replace the removed sodium ions with up to 10 ppm of li...
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WO/2003/084944A1 |
Mixed together are (i) hydrogen peroxide; (ii) 1-alkene, (iii) quaternary ammonium salt wherein at least one of the substituents contains at least six carbon atoms; (iv) boric acid,or both a 1,2-diol and boric acid; and (v) a preformed c...
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WO/2003/084908A2 |
Epoxyalkanes are subjected to at least one of the following washing operations: (1) washing with aqueous inorganic base, and then with aqueous borohydride, or vice versa; or (2) washing with an aqueous solution of both inorganic base and...
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WO/2003/082883A1 |
The invention aims at providing titanium salts which are properly and stably dispersible or soluble in both oil and water and titanium salts which can be used as raw material of various titanium-containing materials or as catalysts for v...
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WO/2003/082844A1 |
The invention relates to a method for producing ethylene oxide, comprising the following steps; I) a gas flow I containing ethylene, oxygen and optionally inert components is guided to a reactions zone and said flow is brought into conta...
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WO/2003/082843A1 |
Process for the preparation of alkylene oxide which process comprises contacting organic hydroperoxide and alkene with a heterogeneous epoxidation catalyst and withdrawing a product stream comprising alkylene oxide and an alcohol as reac...
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WO/2003/082293A1 |
Compounds of formula (I), wherein A- represents the benzenesulphonate (besylate) anion; R represents H or C1-6 alkyl; and n is a number from 0.8 to 2.2 are CCR3 antagonists and are therefore indicated to be useful in therapy of inflammat...
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WO/2003/078414A1 |
The present invention relates to a process for the catalytic epoxidation of olefins in at least one reaction stage comprising: (a) reacting the olefin with hydrogen peroxide in an organic, water-miscible solvent in the presence of a tita...
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WO/2003/074505A1 |
A process is provided for the production of oxirane compounds by reaction of an olefin such as propylene with an organic hydroperoxide using a solid contact catalyst, characterized in that a series of separate reaction zones are used, ea...
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WO/2003/074506A1 |
A method for producing propylene oxide, characterized in that it comprises reacting propylene with hydrogen peroxide in the presence of an organic solvent and a crystalline titanosilicate catalyst which has an MWW structure and contains ...
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WO/2003/074421A1 |
A titanosilicate represented by the following compositional formula (1), wherein in the infrared absorption spectrum measured in the dehydrated state, the absorption spectrum has an absorption band having a relative maximum value at 930Â...
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WO/2003/072635A1 |
The invention relates to prepolymers for native epoxide resins that can be used on an industrial scale or in the various areas of everyday life, e.g. as coating materials or adhesives. The invention also relates to a method for producing...
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WO/2003/072244A1 |
The selectivity and activity of a silver-based olefin epoxidation catalyst is found to be a function of the pore size distribution in the alumina carrier on which it is deposited. Specifically it is found advantageous to provide a carrie...
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WO/2003/072246A2 |
A catalyst which comprises a carrier and silver deposited on the carrier, which carrier has a surface area of at least 1 m2/g, and a pore size distribution such that pores with diameters in the range of from 0.2 to 10 µm represent at le...
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WO/2003/072245A2 |
The present invention provides a catalyst for the epoxidation of hydrocarbons with oxygen, a process for the preparation of the catalyst, and a process for the epoxidation of hydrocarbons with oxygen in the presence of the catalyst.
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WO/2003/070808A1 |
The invention relates to polyamino acids, to a method for producing the same and to their use as catalysts for enantioselective epoxidation of $g(a),$g(b)-unsaturated enons and $g(a),$g(b)-unsaturated sulfones.
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WO/2003/068761A1 |
A method of purifying propylene oxide which comprises subjecting a reaction mixture which has been obtained by the reaction of cumene hydroperoxide with propylene and which comprises propylene oxide and impurities including water, hydroc...
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WO/2003/068763A1 |
A method for separating propylene oxide from a liquid mixture containing propylene oxide, cumene and cumyl alcohol by the use of a distillation column, characterized in that the distillation column is operated with a bottom temperature o...
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WO/2003/068762A1 |
A process for the purification of propylene oxide by using as the feed fluid a propylene oxide-containing reaction fluid which is obtained by the reaction of cumene hydroperoxide with propylene and contaminated with water, hydrocarbons, ...
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WO/2003/066615A1 |
A process for producing an epoxide compound, characterized by reacting an olefin compound with hydrogen peroxide in the presence of: a metal oxide catalyst obtained by reacting hydrogen peroxide with at least one member selected from the...
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WO/2003/066614A1 |
The present invention is provides a method for enantioselectively epoxidizing electron deficient olefins, such as , $g(a),$g(b)-unsaturated esters. The method generally involves admixing the electron deficient olefin, an enantiomerically...
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WO/2003/066584A1 |
Process for preparing alkylaryl hydroperoxide containing product, which process comprises: (a) oxidation of an alkylaryl compound to obtain reaction product containing alkylaryl hydroperoxide, (b) contacting with water at least part of t...
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WO/2003/064357A1 |
An &agr -haloalcohol is made by hydrogenating an &agr -haloketone with a hydrogenating agent in the presence of a transition metal-containing heterogeneous catalyst, under conditions such that an &agr -haloalcohol is formed. The reaction...
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WO/2003/062216A1 |
Insoluble resinous sodium materials are separated from a hydroperoxide/olefin epoxidation feed by contact with a fine screen or a bed of coalescing solids.
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WO/2003/062196A2 |
Gas−phase process for the preparation of propylene oxide comprising contacting propylene with oxygen and hydrogen in the presence of a catalyst comprising a bimetallic compound supported on a titanium containing support, the bimetallic...
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WO/2003/059506A1 |
The invention relates to hydro-oxidation catalysts containing titanium, for the oxidation of hydrocarbons containing an organic-inorganic hybrid material and gold particles and/or silver particles. The invention also relates to a method ...
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WO/2003/059510A2 |
Disclosed are manganese(IV) complex salts of formula [LMn(µ−O)3MnL)]n[XM12O40]m, (I), wherein L is 1,4,7−trimethyl−1,4−7−triazacyclononane, X is P or Si, M is Mo or W, n is 2 or 3, and m is 1 or 2, with the provisos that (i) i...
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WO/2003/059512A1 |
The invention concerns a catalyst immobilized on silica for heterogeneous catalysis, in the form of silica particles of average grain size distribution ranging between 15 $g(m)m and 2 mm comprising a ligand bound to the particles by a co...
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WO/2003/057682A1 |
A process for production of propylene oxide which comprises the oxidation step of oxidizing cumene into cumene hydroperoxide, the epoxidation step of reacting a cumene solution containing cumeme hydroperoxide with an excess of propylene ...
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WO/2003/057358A1 |
A vapor-phase tubular reactor in a shell heat exchanger for removal of the heat of reaction at essentially isothermal conditions has porous wicking surface (211) applied to the external surface of reactor tubes (210). The porous wicking ...
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WO/2003/055869A1 |
The present invention relates to a process for treating a mixture of impure ethylene oxide and of water in a ratio by weight of ethylene oxide to water of 0.1/1 to 4/1, comprising aldehyde impurities, formaldehyde and acetaldehyde, in or...
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