| Document |
Document Title |
|
WO/1999/046255A1 |
A process for converting an olefin such as propylene to the corresponding epoxide is described wherein the olefin, hydrogen and oxygen are contacted with a catalyst comprised of gold on a zirconium-containing support such as zirconia.
|
|
WO/1999/043431A1 |
A catalyst for partially oxidizing an unsaturated hydrocarbon which comprises a titanium-containing oxide and fine gold particles fixed thereto, characterized by having been silylated or hydrophobized. When used in a reaction for produci...
|
|
WO/1999/042212A1 |
A method is provided to manufacture a palladium-gold catalyst by separately impregnating and fixing the palladium and gold and reducing the fixed solids to free metal on a suitable support useful for vinyl acetate manufacture from ethyle...
|
|
WO/1999/039826A1 |
The invention relates to a method for improving the operational life of supported catalysts covered with gold particles and used in gas phase epoxidisation. The invention is characterised in that the catalyst, before or during it is used...
|
|
WO/1999/040077A2 |
The present invention relates to a method for the oxidation of unsaturated hydrocarbons in gaseous phase, wherein said oxidation is carried out in the presence of a hydrogen-oxygen mixture on a catalyst coated with gold particles. This m...
|
|
WO/1999/039827A1 |
The invention relates to a method for regenerating supported catalysts covered with gold particles, based on titanium dioxide or titanium dioxide hydrate and used for oxidising unsaturated hydrocarbons in a gas phase. The invention is ch...
|
|
WO/1999/032472A1 |
An olefin epoxidation process is operated using a plurality of reactor vessels, each containing a fixed bed of a heterogenous catalyst such as titania-on-silica. The reactor vessels are connected in series whereby a feedstream comprised ...
|
|
WO/1999/032471A1 |
The catalytic performance of a supported silver catalyst in a propylene epoxidation process is improved by first contacting the catalyst at an elevated temperature with a treatment stream comprised of carbon dioxide. The carbon dioxide-t...
|
|
WO/1999/032469A1 |
A liquid phase process for preparing an olefin oxide from an olefin in a cascade of two or more reactors, in a baffled tank reactor or in a plug flow reactor comprising the steps of: a) contacting the olefin in a solvent with oxygen or a...
|
|
WO/1999/032470A1 |
A liquid phase process for preparing an olefin oxide from an olefin comprising the steps of: a) contacting the olefin with oxygen or an oxygen-containing gas in a solvent having a boiling point above 130 °C, b) passing the liquid produc...
|
|
WO/1999/029426A1 |
The invention relates to a moulded body comprising an inert support and at least one porous oxidic material applied to said support. The inventive moulded body is obtained by applying a mixture containing the at least one porous oxidic m...
|
|
WO/1999/029679A1 |
The invention relates to a method for producing propene oxide in which a mixture comprised of propene and oxygen or a gas containing oxygen is reacted optionally in the presence of a catalyst in a reactor at a temperature ranging from 15...
|
|
WO/1999/028030A1 |
The invention concerns a catalyst based on titanium zeolite in the form of extruded granules and the use of said catalyst in the synthesis of oxirannes, preferably 1,2-epoxy-3-chloropropane or 1,2-epoxypropane, by reaction between an ole...
|
|
WO/1999/028035A1 |
The invention concerns a catalyst obtained by depositing TS-1 zeolite on an inert honeycomb-shaped support in reactions of olefin epoxidation by the action of hydrogen peroxide in liquid phase.
|
|
WO/1999/028029A1 |
The invention concerns an epoxidation catalyst based on titanium zeolite in the form of extruded granules and the use of said catalyst in the synthesis of oxirannes, preferably 1,2-epoxy-3-chloropropane or 1,2-epoxypropane, by reaction b...
|
|
WO/1999/026911A1 |
The invention relates to a method for condensing one or more components of a gas mixture in a condenser, wherein the difference in temperature between the gas mixture and the cooling surfaces at every point in the condenser is less than ...
|
|
WO/1999/026936A2 |
A process for oxidizing organic compounds is disclosed. Hydrogen peroxide is used to oxidize an oxidizable organic substrate in the presence of a silica-modified titania/silica-containing catalyst. A method for preparing a catalyst using...
|
|
WO/1999/026937A1 |
Oxygenate impurities are removed from an organic chemical feed or stream by treatment with an aqueous reducing agent and aqueous base, accompanied by separation. An aqueous solution of reducing agent and an aqueous solution of base are t...
|
|
WO/1999/025666A2 |
A process for oxidizing organic compounds is disclosed. Hydrogen peroxide is used to oxidize an oxidizable organic substrate in the presence of a silica-modified titania/silica-containing catalyst. A method for preparing a catalyst using...
|
|
WO/1999/024164A1 |
Process for producing spherical catalyst particles containing a zeolite as active element, according to which a sol containing zeolite crystals and at least one gel-forming compound is sprayed from below directly into a reaction zone con...
|
|
WO/1999/024382A1 |
The invention concerns a method for making an organic compound in a liquid medium containing water, which consists in collecting a mixture of reaction products comprising the organic compound, water and by-products; separating at least p...
|
|
WO/1999/023052A1 |
The invention concerns a method for making an organic compound in a liquid medium containing water, which consists in collecting a mixture of reaction products comprising the organic compound, water and by-products; separating at least p...
|
|
WO/1999/023085A1 |
The invention relates to a method for producing heat-stable epoxy compounds, wherein olefinically unsaturated compounds are epoxidized in a manner known per se and the resulting oxirane compounds (a) are washed with water and/or aqueous ...
|
|
WO/1999/022014A1 |
A novel process for preparing a (2R,3S)-3-(4-lower alkoxyphenyl)glycidic acid ester and a process for preparing a (2S,3S)-1,5-benzothiazepine compound, which is useful as a medicine, using the same are provided; and the (2R,3S)-3-(4-lowe...
|
|
WO/1999/016760A1 |
Disclosed are improved processes for the recovery of 3,4-epoxy-1-butene (epoxybutene) from an epoxidation effluent comprising epoxybutane, butadiene, oxygen and an inert diluent obtained by the selective epoxidation of butadiene with an ...
|
|
WO/1999/014208A1 |
The invention concerns a method whereby an oxirane prepared by epoxidation of an olefinic compound by a peroxidized compound in liquid medium is separated from the reaction medium by liquid-liquid extraction using an extraction solvent.
|
|
WO/1999/012897A1 |
It has been surprisingly discovered that the disadvantages of the lengthy literature procedures to synthesize 13,14-dihydro prostaglandin A, E, and F derivatives can be overcome using a novel Methyl 7-(2-hydroxy-5-(2-(2-oxiranyl)ethyl)-4...
|
|
WO/1999/011367A1 |
A silver catalyst for ethylene oxidation to ethylene oxide is provided containing a promoter combination consisting of an alkali metal component, a sulfur component, a fluorine component and a pnictogen component from the group phosphoro...
|
|
WO/1999/011370A1 |
A silver catalyst for ethylene oxidation to ethylene oxide is provided containing a promoter combination consisting of an alkali metal component, a sulfur component, a germanium or tin component, and a fluorine component, the catalyst be...
|
|
WO/1999/011639A1 |
Propylene is separated from the methanol present as a solvent in a crude olefin epoxidation product by means of an extractive distillation wherein a relatively heavy polar solvent having hydroxy groups such as water or propylene glycol i...
|
|
WO/1999/011371A1 |
A silver catalyst for ethylene oxidation to ethylene oxide is provided containing a promoter combination consisting of an alkali metal component, a sulfur component, and a lanthanide component, the catalyst being essentially free of rhen...
|
|
WO/1999/010357A1 |
The subject invention provides a binuclear metal complex having structure (I) wherein M¿1?, and M¿2? are independently selected from the group consisting of Fe, Co, Mn and Ru; wherein $i(m) and $i(n) are independently +2 or +3; wherein...
|
|
WO/1999/008985A1 |
Acetaldehyde may be effectively removed from a contaminated methanol stream using a distillation method wherein a solvent stream comprised of a relatively heavy polar compound such as water or propylene glycol is utilized as an extractiv...
|
|
WO/1999/009020A1 |
Process for the manufacture of epoxy compounds of formula (D) wherein Rb represents a group selected from those of the formulae (1, 2 and 3) by reaction of a compound (A) or (B) with an alkylene oxide, in the presence of a catalyst, sele...
|
|
WO/1999/007690A1 |
Propylene oxide obtained by an epoxidation process which uses methanol as a solvent may be effectively treated to remove acetaldehyde by subjecting the crude epoxidation reaction product to fractional distillation. The methanol solvent i...
|
|
WO/1999/006386A1 |
An aqueous epoxidation process stream containing molybdenum and sodium values is incinerated and an aqueous solution containing molybdenum and sodium is recovered, acidified and reacted with a calcium compound without first adding base t...
|
|
WO/1999/006385A1 |
Direct oxidation of propylene oxide is accomplished using calcium-carbonate silver catalysts containing both a potassium promoter derived from potassium nitrate or the like and a magnesium promoter. The addition of iron as a co-promoter ...
|
|
WO/1999/005199A1 |
Purification of propylene oxide by distillation shortly before it is used.
|
|
WO/1999/003850A1 |
The present invention relates to the process for the preparation of chiral 3,4-epoxybutyric acid expressed by formula (1) and the salt thereof, wherein (S)-3-activated-hydroxybutyrolactone as a raw material and other inexpensive reactant...
|
|
WO/1999/003581A1 |
The invention relates to a method for producing supported catalysts by impregnating or imbibing SiO¿2?-based crystalline or amorphous support material with a pore diameter of 20 to 250 Å with silasesquioxane metal complexes. Said suppo...
|
|
WO/1999/002511A1 |
The invention relates to a method for epoxidizing alkenes of formula (1) in which R?1¿, R?2¿, R?3¿ and R?4¿ represent, independently from one another, hydrogen, C¿1?-C¿20? alkyl, C¿1?-C¿12? alkoxy, C¿6?-C¿10? aryl, -CHOH-CH¿3?...
|
|
WO/1999/002478A1 |
A method is disclosed for preparing 3,3-dimethylbutyraldehyde by using silica gel to isomerize 3,3-dimethyl-1,2-epoxybutane, which in turn may be prepared by oxidation of dimethylbutene. Also disclosed is a method for oxidizing dimethylb...
|
|
WO/1999/002261A1 |
The present invention provides for catalysts for olefin selective oxidation in the presence of air or oxygen, containing compounds of formula (1): Mo¿x?O¿y?(L)¿z?, wherein L is a ligand, x is 1, 2 or 3; y is an even number from 0 to 2...
|
|
WO/1999/001445A1 |
Propylene is converted to propylene oxide in a highly efficient liquid phase process wherein temperature and pressure are both increased over the course of the epoxidation, which is preferably conducted in a continuous mode of operation....
|
|
WO/1999/000188A1 |
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...
|
|
WO/1998/058921A1 |
Direct oxidation of propylene to propylene oxide is accomplished using alkaline earth metal compound-supported silver catalysts containing an inorganic chloride promoter and a potassium promoter derived from a potassium salt containing a...
|
|
WO/1998/058920A1 |
A propylene epoxidation process wherein a supported silver catalyst is utilized may be operated at high efficiency even in the absence of any organic chloride in the feedstream, provided the catalyst is first contacted at an elevated tem...
|
|
WO/1998/056762A2 |
A process for preparing an optically active phenyloxirane compound represented by formula (II), wherein ring A is a substitued or unsubstituted benzene ring; R is a group represented by -CO�2?R?q�, or a group convertible to the group...
|
|
WO/1998/056780A1 |
Process for the production of epoxydes and hydroxylated derivatives of fatty insaturated esters and acids in a single reaction step by using as catalysts molecular sieves containing titanium in their structure and, as oxidising agent, a ...
|
|
WO/1998/055228A1 |
The invention relates to a method for regenerating a zeolitic catalyst, comprising the following steps: (I) at least one partially deactivated catalyst is heated to a temperature ranging from 250 to 600 �C in an atmosphere containing l...
|
