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Matches 51 - 100 out of 1,732

Document Document Title
WO/2013/057165A1
The invention relates to a method for producing light-coloured polyisocyanates by phosgenation of mixtures containing MDA and multinuclear aromatic polyamines that have ο-phenylenediamine units incorporated via methylene bridges. The in...  
WO/2013/029918A1
Process for preparing isocyanates by reacting the corresponding amines comprised in at least one feed stream A with phosgene comprised in at least one feed stream P in a reactor plant comprising at least one mixing zone and at least one ...  
WO/2013/008891A1
Provided is a method for producing an isocyanate compound from an amine compound and a carbonate compound directly or continuously without requiring the isolation/purification of a carbamate compound that is generated as an intermediate....  
WO/2012/176631A1
The present invention relates to a method for producing an isocyanate compound containing an ethylenically unsaturated group, characterized by comprising: (i) a step of subjecting a tri-substituted urea compound represented by general fo...  
WO/2012/163894A3
The invention provides a multistage process for continuously preparing organic polyisocyanates, preferably diisocyanates, more preferably aliphatic or cycloaliphatic diisocyanates, by reacting the corresponding organic polyamines with ca...  
WO/2012/160072A1
The present invention relates to a process for preparing polyisocyanates from natural raw material sources by starting from a biomass material and preparing a composition which comprises low molecular mass aromatics that contain per mole...  
WO/2012/157366A1
A method for manufacturing tolylene diisocyanate comprises a mixing step, a carbamate manufacturing step, and a pyrolysis step. In the mixing step, a first diaminotoluene containing 2,4- and 2,6-diaminotoluene in a first isomeric ratio i...  
WO/2012/153509A1
This aldehyde compound production method is characterized by including a step of synthesizing an aldehyde compound by reacting a compound represented by general formula (a1) or (a2) with hydrogen and carbon monoxide in the presence of a ...  
WO/2012/130788A1
The invention relates to a method for producing isocyanates by phosgenating the corresponding amines in the gas phase, characterized in that a reaction mixture containing phosgene from the gas-phase synthesis of carbon monoxide and chlor...  
WO/2012/121291A1
This pentamethylene diisocyanate is obtained by phosgenation of a pentamethylene diamine or salt thereof obtained by a biochemical process, and the total content therein of compounds represented by general formula (1) and compounds repre...  
WO/2012/115110A1
[Problem] To provide a process for efficiently producing carbonyl compounds, particularly, a process for efficiently producing N-substituted carbamic acid esters. [Solution] This process for producing carbonyl compounds includes a step (...  
WO/2012/111750A1
The present invention relates to a catalyst for isocyanate compound production wherein an alkali metal compound and/or an alkaline earth metal compound is supported upon a carrier, and to a method for producing the catalyst. The present ...  
WO/2012/111445A1
The purpose of the present invention is to improve the stability of an ethylene-based unsaturated compound having an isocyanate group in the molecule by preventing the polymerization of the ethylene-based unsaturated compound. The presen...  
WO/2012/111446A1
The purpose of the present invention is to improve the stability of an ethylene-based unsaturated compound having an isocyanate group in the molecule by preventing the polymerization of the ethylene-based unsaturated compound and a polym...  
WO/2012/108453A1
The present invention prevents the obstruction of a reactor tube in the production of an isocyanate compound. The present invention also produces an isocyanate compound at a high reaction rate in a high yield merely by pyrolysis. This pr...  
WO/2012/106588A2
The present invention encompasses the finding that improvements can be achieved in manufacture of isocyanates through the use of a substitute for or a precursor of phosgene. Methods and compositions utilized in accordance with the presen...  
WO/2012/106588A3
The present invention encompasses the finding that improvements can be achieved in manufacture of isocyanates through the use of a substitute for or a precursor of phosgene. Methods and compositions utilized in accordance with the presen...  
WO/2012/088671A1
A fast mixing reactor comprises: a first feed channel casing (1), a reactor casing (4), a second feed channel (17), a hollow impeller type material distributor (6), a rotation shaft (10) and a first feed distributor (3). The first feed c...  
WO/2012/065995A1
The invention relates to a process for purifying mixtures comprising 4,4'-methylene diphenyl diisocyanate, comprising the distillative purification of a mixture I comprising 4,4'-methylene diphenyl diisocyanate having a content of hydrol...  
WO/2012/065927A1
The invention relates to a process for preparing methylene diphenyl diisocyanate, comprising (a) the phosgenation of di- and/or polycyclic methylene diphenyl diamine, (b) the separation of the crude methylene diphenyl diisocyanate obtain...  
WO/2012/066001A1
The invention relates to a process for purifying mixtures comprising 4,4'-methylene diphenyl diisocyanate, comprising the distillative purification of a mixture I comprising 4,4'-methylene diphenyl diisocyanate by means of a column K1, w...  
WO/2012/049158A1
The invention relates to a method for producing isocyanates by reacting the corresponding amines with phosgene, comprising the following steps: (a) providing at least one amine-containing reactant flow and at least one phosgene-containin...  
WO/2012/050858A1
Embodiments of the present invention relate to a mixing apparatus. Particularly, embodiments of the present invention provide a mixing apparatus for mixing fluid components such as phosgene and amine during a highly reactive chemical rea...  
WO/2012/046734A1
The purpose of the present invention is to provide: a method for separation of a mixture that contains a plurality of compounds that reversibly react with each other, in particular a method for efficiently separating an isocyanate from a...  
WO/2012/040187A1
The present invention a process and apparatus for the production of methylene diphenyl diisocyanate (MDI) isomer mixtures with a low 2,2'-MDI isomer content and a high 2,4'-MDI isomer content. The resulting mixtures have an increased rea...  
WO/2012/027162A2
The present invention relates to an improved composition comprising a blend of diisocyanates of Formula (II) derived from their corresponding dianiino alkyl esters obtained from soy protein source, wherein R is an alky! and n is 1-4, and...  
WO/2012/027162A3
The present invention relates to an improved composition comprising a blend of diisocyanates of Formula (II) derived from their corresponding dianiino alkyl esters obtained from soy protein source, wherein R is an alky! and n is 1-4, and...  
WO/2012/020028A1
The invention relates to a method for producing urethanes or ureas or mixtures of urethanes and ureas by oxidative carbonylation of organic amines in the presence of carbon monoxide, oxygen and a catalyst, where the catalyst used is a tr...  
WO/2012/005059A1
A method of producing toluene dicarbamate is provided with: a carbamate production step in which toluenediamine, urea and/or an N-unsubstituted carbamic acid ester, and an alcohol are reacted to produce toluene dicarbamate; and a benzoyl...  
WO/2011/161029A1
Proposed is a process for preparing isocyanates by dissociating the corresponding carbamates, which is characterized in that the carbamates are dissociated in the presence of a heterogeneous Lewis-acidic catalyst.  
WO/2011/158598A1
The disclosed carbamate production method is provided with a urea-producing process, a carbamation process, an ammonia-separating process wherein gas is absorbed in water in the presence of carbonate salt to form water with absorbed gas ...  
WO/2011/138245A1
The invention relates to a method for producing isocyanates by reacting the corresponding amine with phosgene in the gas phase, wherein a thinning agent comprising between 90.0000% by mass and 99.9999% by mass of materials that are inert...  
WO/2011/130907A1
A preparation method of isocyanate by interfacial phosgenation reaction is provided, which comprises the following steps: (a) allowing a solution stream of polyamine having the general formula (II) and a liquid stream of phosgene to flow...  
WO/2011/130901A1
A jet reactor with dynamic spray nozzle comprises an inner feed pipe (2), an outer feed pipe (3), a gear box (6), a transmission shaft (1) and a transmission linking gear (4). The transmission shaft (1), the inner feed pipe (2) and the o...  
WO/2011/130032A1
The invention relates a process for producing isocyanates comprising the steps of a) providing an azolide and optionally a solvent, and b) adding an acid at a temperature below about 40C. The invention also relates to the isocyanate obta...  
WO/2011/125429A1
Disclosed is a method for producing a carbamate compound represented by formula (3), wherein a fluorine-containing carbonate diester compound represented by formula (1) and a non-aromatic diamine compound represented by formula (2) are c...  
WO/2011/115849A1
Excessive residence time in the conduits located between the outlet of a static mixer and a reactor/separator reservoir can lead to undesired by-products, formation of solids, and conduit fouling. This disclosure relates to an improved c...  
WO/2011/115848A1
This disclosure relates to a static phosgene mixer, and more generally, to an apparatus for mixing of fluid components such as phosgene and amine during an highly reactive, chemical reaction that is vulnerable to the creation of undesire...  
WO/2011/113737A1
The invention relates to a method for producing isocyanates, comprising (a) reacting at least one amine with phosgene in the gas phase in a reaction zone and (b) subsequently cooling the reaction gases in a cooling zone by means of indir...  
WO/2011/108473A1
Disclosed is a method for producing 1,5-pentamethylene diamine, wherein a processed lysine decarboxylase expressing microorganism is used.  
WO/2011/104264A1
The invention relates to a method for producing isocyanates by reacting the corresponding amines with phosgene in the gas phase, optionally in the presence of an inert medium, comprising the following steps: (a) evaporating the amine in ...  
WO/2011/089098A1
The invention relates to a method for producing isocyanates by thermally splitting carbamates, also known as carbamide acid ester or urethane. The carbamate splitting increases in significance as a phosgene-free method for producing isoc...  
WO/2011/078000A1
A method for treating an isocyanate residue, which comprises carrying out a thermal decomposition reaction of a carbamate that is produced by the reaction among an amine, urea and/or an N-unsubstituted carbamic acid ester and an alcohol ...  
WO/2011/072903A1
The invention relates to compounds made of (cyclo)aliphatic diisocyanates, produced according to a multi-stage method (phosgene-free production), which comprises the conversion of (cyclo)aliphatic diamines into the corresponding (cyclo)a...  
WO/2011/067242A1
The invention relates to a method for producing isocyanates by thermally splitting carbamates, a carbamate splitting gas comprising the corresponding isocyanate and the corresponding alcohol being obtained, the invention being characteri...  
WO/2011/067369A1
The invention relates to a method for producing aromatic isocyanates by reacting the corresponding formamides with an oxygen-containing gas on noble metal catalysts at temperatures of 300 to 600ºC and a contact time of 1 to 1000 ms, cha...  
WO/2011/051314A1
The invention relates to a method for the combined production of diisocyanates and/or polyisocyanates and glycols, comprising the process stages A, B, C, and E for producing glycols and the process stages A, C, D, E, F and G for producin...  
WO/2011/049023A1
A process for producing an isocyanate compound, comprising a step of producing a compound represented by formula (2) from a compound represented by formula (1) by carrying out a trihalomethane removal reaction in the presence of at least...  
WO/2011/048124A1
The invention relates to a method for producing urethanes by reacting aromatic amines by with a dialkyl carbonate, characterized in that the alkyl radical of the organic dialkyl carbonate comprises 4-18 carbon atoms and is branched in th...  
WO/2011/036062A2
The invention relates to a multi-stage method for the continuous production of organic, distillable polyisocyanates, preferably diisocyanates, especially preferably aliphatic or cycloaliphatic diisocyanates, by reacting the corresponding...  

Matches 51 - 100 out of 1,732