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Matches 351 - 400 out of 2,631

Document Document Title
WO/2001/056971A1
A method is provided for co-producing dialkyl carbonate and alkanediol by reacting alkylene carbonate with alkanol in the presence of an amorphous aluminosilicate catalyst containing alkali metal, alkaline earth metal, or a combination t...  
WO/2001/055080A1
A method and catalyst system for producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the method includes the step of contacting at least one aromatic hydroxy compound with oxygen and carbon monoxide in the p...  
WO/2001/055079A1
A method and catalyst system for producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the method includes the step of contacting at least one aromatic hydroxy compound with oxygen and carbon monoxide in the p...  
WO2001002335A3
Hydroxyaromatic compounds such as phenol are carbonylated with oxygen and carbon monoxide in the presence of a catalyst system comprising a Group VIIIB metal, preferably palladium; an alkali metal or alkaline earth metal halide, preferab...  
WO/2001/047864A1
A process for alkoxylating an organic carbonate wherein an alkylene oxide is reacted with an organic carbonate such as a dialkyl carbonate in the presence of a catalytically effective amount of a calcium-containing catalyst to produce al...  
WO2000050376A3
Efficient synthetic methods towards mixed aliphatic carbonates through the three component couplings of aliphatic alcohols, alkyl halides and carbon dioxide in the presence of cesium carbonate and tetrabutylammonium iode (TBAI). Due to t...  
WO/2001/046118A1
Lead halophenoxides, especially bromophenoxides, are prepared by the reaction of lead(II) oxides with a hydroxyaromatic compound such as phenol and a chloride or bromide salt such as an alkali metal bromide, a tetraalkylammonium bromide ...  
WO/2001/046119A1
Hydroxyaromatic compounds such as phenol are carbonylated with oxxygen and carbon monoxide in the presence of a catalyst system comprising a Group VIIIB metal, preferably palladium; at least one bromide or chloride salt, preferably sodiu...  
WO/2001/046100A1
The invention relates to a method for producing phosphonium phenolates from phosphonium halogenides and phenols.  
WO/2001/044158A1
A method is provided for co-producing dialkyl carbonate and alkanediol by reacting alkylene carbonate with alkanol in the presence of a complex salt catalyst having a formula: A¿x?(M¿y?O¿z?), wherein A is an alkali metal or alkaline e...  
WO/2001/042187A1
An energy efficient series of mass and energy integrated reactive distillation columns and distillation columns are used to effect the production of diaryl carbonate. Utilizing the method or apparatus of the invention facilitates high di...  
WO/2001/032598A1
This invention relates to a process for the preparation of hydroxyaromatic chloroformate products suitable for use as chainstopping or endcapping agents. The process involves a semi-batch process in which an aqueous caustic solution is i...  
WO/2001/027066A1
Di-t-butyl dicarbonate, which is a thermally unstable compound, can be inhibited from decomposing by using as the decomposition inhibitor a hydrocarbon compound such as hexane, cyclohexane, 1-hexene or toluene and/or a chain ether compou...  
WO/2001/027078A1
The invention relates to a process for the preparation of a peracid, perester or diacylperoxide and is characterized in that a mixed anhydride of formula: R?1¿[C(O)OC(O)OR?2¿]¿n? or [R?3¿C(O)OC(O)O]¿p?R?4¿ is contacted with a hydro...  
WO/2001/021616A1
A method of synthesizing a CO¿2?-philic analog of a CO¿2?-phobic compound, includes the step of: reacting the CO¿2?-phobic compound with a CO¿2?-philic compound selected from the group of a polyether substituted with at least one sid...  
WO/2001/016088A1
Hydroxyaromatic compounds such as phenol are carbonylated with oxygen and carbon monoxide in the presence of a catalyst system comprising a Group VIII metal having an atomic number of at least 44, preferably palladium; an alkali metal or...  
WO/2001/016087A1
Hydroxyaromatic compounds such as phenol are carbonylated with oxygen and carbon monoxide in the presence of a catalyst system comprising a Group VIII metal having an atomic number of at least 44, preferably palladium; an alkali metal or...  
WO/2001/016086A1
Hydroxyaromatic compounds such as phenol are carbonylated with oxygen and carbon monoxide in the presence of a catalyst system comprising a Group VIIIB metal, preferably palladium; an alkali metal or alkaline earth metal halide, preferab...  
WO2000064853A3
This invention relates to a method of separating methanol and dimethyl carbonate in a distillation column through extractive distillation. The extractive distillation is conducted in the presence of an extractive distillation agent which...  
WO/2001/002335A2
Hydroxyaromatic compounds such as phenol are carbonylated with oxygen and carbon monoxide in the presence of a catalyst system comprising a Group VIIIB metal, preferably palladium; an alkali metal or alkaline earth metal halide, preferab...  
WO/2001/000634A1
A method for making a vinyl carbonate represented by the formula (I): CH¿2?=CHOC(O)X¿1?R¿1?, wherein X¿1? is oxygen or sulfur and R¿1? is a substituted or an unsubstituted aliphatic alkyl, aryl, aryl alkyl, olefinic, vinyl, or cyclo...  
WO/2001/000560A1
The present invention, which relates to a process for preparing aromatic carbonates, provides a process for preparing diphenylcarbonate comprising the steps of preparing methylphenylcarbonate by gas phase reacting or liquid phase reactin...  
WO/2001/000582A1
The invention relates to a process for preparing quinoline-substituted carbonate and carbamate compounds, which are important intermediates in the synthesis of 6-O-substituted macrolide antibiotics. The process employs metal-catalyzed co...  
WO/2000/076950A1
An efficient method for manufacturing a dialkyl carbonate from CO, O¿2?, and an alcohol which uses a catalyst comprising: (i) a cupric halide; and (ii) a compound capable of producing a copper halide alkoxide by reaction with a cupric h...  
WO/2000/073256A1
A method is provided for co-producing dialkyl carbonate and alkanediol by reacting alkylene carbonate with alkanol in the presence of a zeolite catalyst which contains alkali metal, alkaline earth metal, or a combination thereof present ...  
WO/2000/066530A1
A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contacting at least on...  
WO/2000/066532A1
A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contacting at least on...  
WO/2000/066531A1
A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contacting at least on...  
WO/2000/066535A1
A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contacting at least on...  
WO/2000/066534A1
A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contacting at least on...  
WO/2000/066536A1
A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contacting at least on...  
WO/2000/066533A1
A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contacting at least on...  
WO/2000/064853A2
This invention relates to a method of separating methanol and dimethyl carbonate in a distillation column through extractive distillation. The extractive distillation is conducted in the presence of an extractive distillation agent which...  
WO/2000/059859A1
A method for the production of aliphatic fluoroformates, wherein carbonyl fluoride is made to react with aliphatic alcohol in the presence of sodium fluoride in ether at a temperature of -20° to 50 °C. The method is carried out using c...  
WO/2000/058259A1
A continuous process for the preparation of monofunctional aromatic haloformates (MAH) having structure (I) wherein n is an integer from 1 to 5, and R¿1? represents hydrogen, a branched or unbranched alkyl group having from 1-15 carbon ...  
WO/2000/053565A1
A process for preparing organic carbonates, such as dimethyl carbonate, without the use of phosgene and with a high yield and selectivity to the desired carbonate, by reacting a formaldehyde-acetal with a source of oxygen, in the presenc...  
WO/2000/052077A1
A process in which a recovered phenol compound obtained in polycarbonate production with a specific polycondensation catalyst is subjected as a starting material to transesterification and decarbonylation to produce a diaryl carbonate wh...  
WO/2000/051954A1
A process for continuously producing a dialkyl carbonate and a diol which comprises: a step (1) in which a cyclic carbonate and an aliphatic monohydric alcohol are continuously fed to a continuous multi-stage distillation tower in the pr...  
WO/2000/051964A1
The invention relates to a method of preparing an aryl chloroformate of formula (I) wherein n is an integer from 1 to 5, and R¿1? represents hydrogen, a branched or unbranched alkyl group having from 1-15 carbon atoms, an aryl group whi...  
WO/2000/050376A2
Efficient synthetic methods towards mixed aliphatic carbonates through the three component couplings of aliphatic alcohols, alkyl halides and carbon dioxide in the presence of cesium carbonate and tetrabutylammonium iode (TBAI). Due to t...  
WO/2000/050389A1
A method of preparing carbamates of the general formula RR'-N-CO¿2?-R'' by reacting an amine with carbon dioxide and an organic electrophile in an anhydrous solvent in the presence of a cesium base, whereby carbamate synthesis is accomp...  
WO/2000/047314A1
The invention relates to a device for mixing and reacting multiphase gaseous and liquid mixtures. Homogenous liquid solutions which cannot be mixed homogeneously are brought into intensive contact with homogenous solutions in which sever...  
WO/2000/047544A1
The invention relates to a method for preparing symmetrical and asymmetrical carbonates of the general formula (I) by reacting alcohols of the general formula (II) and alkyl or aryl halides of the general formula (III) with carbon dioxid...  
WO/2000/040529A1
The invention relates to the use of compounds of formula (I): wherein X is -C(O)-, -C(S)-, -C=NOH, or -CH(R?7¿)- wherein R?7¿ is hydrogen, hydroxy, C¿1-7?alkoxy, -OR?8¿ or -NR?8¿R?9¿ (wherein R?8¿ is a group -Y?1¿R?10¿ (wherein ...  
WO/2000/040541A1
An improved method for producing an aromatic carbonate by reacting an aromatic hydroxy compound, carbon monoxide and oxygen in the presence of a catalyst system comprising at least one of palladium or a palladium compound; at least one l...  
WO/2000/039069A1
The improved method of the present invention comprises reaction of an aromatic hydroxy compound, carbon monoxide, and oxygen in the presence of a catalyst system comprising a palladium compound, an inorganic co-catalyst, and a halide sou...  
WO/2000/037420A1
A method for efficient removal of lead co-catalyst species from organic process streams arising from diaryl carbonate synthesis, by contacting the organic reaction mixtures with an aqueous acid, salt, or acid/salt solution, thereby extra...  
WO/2000/037417A1
A continuous flow process for converting hydroxyaromatic compounds to diaryl carbonates by reaction with oxygen and carbon monoxide in the presence of a catalyst system typically comprising a group VIIIB metal or compound thereof, an ino...  
WO/2000/037413A1
The invention relates to a method for producing an aromatic carbonate by oxidative carbonylation of an aromatic hydroxy compound with carbon monoxide and oxygen in the presence of a platinum metal catalyst, a co-catalyst, a base and opti...  
WO/2000/037414A1
A method for efficiently recovering a hydroxyaromatic compound from aqueous extract streams of diaryl carbonate reaction mixtures, comprises contacting the aqueous extracts with a suitable solvent, preferably diphenyl carbonate or anisol...  

Matches 351 - 400 out of 2,631