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Matches 351 - 400 out of 2,916

Document Document Title
WO/2003/016256A1
Unexpected corrosion of downstream sections of a dialkyl carbonate manufacturing apparatus has been traced to alkyl chloroformate impurities, which slowly decompose to yield hydrochloric acid. An improved process and apparatus for dialky...  
WO/2003/016257A1
Unexpected corrosion of downstream sections of a diakyl carbonate manufacturing apparatus has been traced to alkyl chloroformate impurities, which slowly decompose to yield hydrochloric acid. An improved process and apparatus for dialkyl...  
WO/2003/016258A1
Unexpected corrosion of downstream section of a dialkyl carbonate manufacturing apparatus has been traced to alkyl chloroformate impurities, which slowly decompose to yield hydrochloric acid. An improved process and apparatus for dialkyl...  
WO2002048087A3
A process for catalytic production of diaryl carbonates by oxidative carbonylation of aromatic hydroxy compounds with carbon monoxide and axygen achieves water removal during reaction by a process comprising the steps of: removing a liqu...  
WO2002057213A3
A process for catalytic production of diaryl carbonates by oxidative carbonylation of aromatic hydroxy compounds with carbon monoxide and oxygen achieves water removal during reaction by a process comprising the steps of: removing a liqu...  
WO/2003/010122A1
High yields of ester-substituted diary carbonates such as bis-methyl salicyl carbonate were obtained by the condensation of methyl salicylate with phosgene in the presence of a phase transfer catalyst (PTC) in an interfacial reaction sys...  
WO/2003/010123A1
High yields of ester-substituted diary carbonates such as bis-methyl salicyl carbonate were obtained by the condensation of ester-substituted phenols with phosgene in the presence of a phase transfer catalyst (PTC) and optionally a terti...  
WO2002048088B1
A process for catalytic production of diaryl carbonates by oxidative carbonylation of aromatic hydroxy compounds with carbon monoxide and oxygen achieves water removal during reaction by a process comprising the steps of: removing a liqu...  
WO/2003/006418A1
A method for producing a dialkylcarbonate through the transesterification of an alkylene carbonate and an alcohol, wherein a purified alkylene carbonate having a purity of 80 wt % or more is used as a raw material of the transesterificat...  
WO/2003/002507A1
The present invention is directed to a method for sustaining the catalytic activity of a carbonylation catalyst composition, after changes in reactor pressure and temperature, in the catalytic production of aromatic carbonates.  
WO/2003/002630A2
The invention relates to a novel method for the production of aliphatic oligocarbonate diols from aliphatic diols by transesterification with dimethyl carbonate (DMC) under pressure.  
WO/2003/002237A2
A method for separating at least one lower polarity fluid from a mixture of fluids having varying polarity, comprising contacting at least one low polarity or non-polar polymeric membrane with the mixture of fluids under conditions such ...  
WO/2003/000641A1
An integrated process for the production of a dialkyl carbonate and a diol from an alkylene oxide, carbon dioxide and an aliphatic monohydric alcohol is described in which an alkylene oxide if first reacted with carbon dioxide in the pre...  
WO2002072540A3
The present invention pertains to methods for preparing a compound of Formula (I), wherein A is O or N-L; each L is independently H or an acyl group; K is, together with the two contiguous linking carbon atoms, a phenyl ring, a 5- or 6-m...  
WO2002048088A3
A process for catalytic production of diaryl carbonates by oxidative carbonylation of aromatic hydroxy compounds with carbon monoxide and oxygen achieves water removal during reaction by a process comprising the steps of: removing a liqu...  
WO/2002/098838A2
The present invention is directed to a method for reducing the percent decomposition of an aromatic carbonate in a first reaction mixture comprising the aromatic carbonate, the method comprising the step of adding at least one decomposit...  
WO/2002/096851A1
A process for producing dialkyl carbonates, such as dimethyl carbonate, from the reaction of a primary alcohol with urea in the presence of a catalyst which is a complex compound represented by R¿2?Sn(OCH¿3?)¿2?. XL, wherein R = C¿n?...  
WO/2002/087723A1
The invention relates to a reactor (1) for gas/liquid or gas/liquid/solid reactions comprising a vertical longitudinal axis, a feed inlet (2) for a liquid or liquid/solid educt stream in the upper area of the reactor and for a gaseous st...  
WO/2002/072559A1
This invention relates to a process for the manufacture of compounds which are useful to make either pesticides that can be used as fungicides, herbicides, insecticides, rodenticides or biocides, or pharmaceutical compounds for both huma...  
WO/2002/072540A2
The present invention pertains to methods for preparing a compound of Formula (I), wherein A is O or N-L; each L is independently H or an acyl group; K is, together with the two contiguous linking carbon atoms, a phenyl ring, a 5- or 6-m...  
WO/2002/070452A1
A method is provided for co-producing dialkyl carbonate and alkanediol by reacting alkylene carbonate with alkanol in the presence of a IIIA metal oxide catalyst, preferably alumina.  
WO2002044122A3
A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds is disclosed. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contactin...  
WO2002040439A3
The present invention provides a method for making aromatic carbonates. In this method, an aryl alcohol is reacted with a dialkyl carbonate in a reactor (e.g., a distillation column) to produce an arylalkyl carbonate and diaryl carbonate...  
WO/2002/060854A1
A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds is disclosed. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contactin...  
WO/2002/057213A2
A process for catalytic production of diaryl carbonates by oxidative carbonylation of aromatic hydroxy compounds with carbon monoxide and oxygen achieves water removal during reaction by a process comprising the steps of: removing a liqu...  
WO2001085825A3
High molecular weight polycarbonates are prepared from hindered bisphenols in a reaction sequence involving conversion of the hindered bisphenol to the corresponding bischloroformate and subsequent treatment with an amine catalyst and aq...  
WO2002000596A3
The specification describes a method for manufacturing dialkyl carbonate by reacting carbon monoxide, oxygen and alcohol in the presence of a catalyst. The catalysts are combinations of copper compounds and other metal compounds or halid...  
WO/2002/048088A2
A process for catalytic production of diaryl carbonates by oxidative carbonylation of aromatic hydroxy compounds with carbon monoxide and oxygen achieves water removal during reaction by a process comprising the steps of: removing a liqu...  
WO/2002/048087A2
A process for catalytic production of diaryl carbonates by oxidative carbonylation of aromatic hydroxy compounds with carbon monoxide and axygen achieves water removal during reaction by a process comprising the steps of: removing a liqu...  
WO/2002/044122A2
A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds is disclosed. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contactin...  
WO/2002/040439A2
The present invention provides a method for making aromatic carbonates. In this method, an aryl alcohol is reacted with a dialkyl carbonate in a reactor (e.g., a distillation column) to produce an arylalkyl carbonate and diaryl carbonate...  
WO/2002/038271A1
Bromide source such as alkali metal bromide or onium bromide, present as part of a catalyst mixture in an organic oxidative carbonylation mixture further comprising diaryl carbonate and a hydroxyaromatic compound, is often at least parti...  
WO/2002/036539A1
Organolead compounds such as tetraethyllead are useful in catalyst compositions for the oxidative carbonylation of hydroxayromatic compounds to diaryl carbonates. They are employed in combination with a Group 8, 9, or 10 metal such as pa...  
WO2001064650A3
The present invention provides convergent processes for preparing epothilones, desoxyepothilones, and analogues thereof. The present invention further provides novel compositions and methods for the treatment of cancer and additionally p...  
WO/2002/030559A1
In one embodiment, the present invention provides a method of producing a homogeneous chemical reaction utilizing multiphase starting materials. The method includes the steps of providing a first reactant system at least partially embodi...  
WO/2002/028812A1
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...  
WO2001079149A3
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 iodide salt, preferably sodium iodide; and at least o...  
WO2001077194A3
Describes a polymerizable composition of (a) a first allyl functional monomer, which is selected such that a substantially completely cured polymerizate of the first allyl functional monomer has a 15 second Barcol 934 hardness of at leas...  
WO2000058259A9
A continuous process for the preparation of monofunctional aromatic haloformates (MAH) having structure (I) wherein n is an integer from 1 to 5, and R1 represents hydrogen, a branched or unbranched alkyl group having from 1-15 carbon ato...  
WO/2002/000596A2
The specification describes a method for manufacturing dialkyl carbonate by reacting carbon monoxide, oxygen and alcohol in the presence of a catalyst. The catalysts are combinations of copper compounds and other metal compounds or halid...  
WO/2001/094444A1
The invention relates to a novel method for producing aliphatic oligocarbonate diols from aliphatic diols by means of a multi-stage transesterification with dimethyl carbonate (DMC) while almost completely utilizing the carbonate involve...  
WO/2001/085825A2
High molecular weight polycarbonates are prepared from hindered bisphenols in a reaction sequence involving conversion of the hindered bisphenol to the corresponding bischloroformate and subsequent treatment with an amine catalyst and aq...  
WO/2001/079149A2
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 iodide salt, preferably sodium iodide; and at least o...  
WO/2001/077060A1
A method which comprises adding a solvent having a solubility parameter of 7 to 10 to a solution of an aromatic hydroxy compound containing an aromatic carbonate to thereby precipitate the aromatic carbonate as crystals and separating an...  
WO/2001/077194A2
Describes a polymerizable composition of (a) a first allyl functional monomer, which is selected such that a substantially completely cured polymerizate of the first allyl functional monomer has a 15 second Barcol 934 hardness of at leas...  
WO2000050376A9
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...  
WO2000040541A9
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/2001/064617A1
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/2001/064618A1
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/2001/064650A2
The present invention provides convergent processes for preparing epothilones, desoxyepothilones, and analogues thereof. The present invention further provides novel compositions and methods for the treatment of cancer and additionally p...  

Matches 351 - 400 out of 2,916