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WO/2011/051314 |
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...
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WO/2011/048124 |
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...
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WO/2011/049023 |
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...
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WO/2011/036062 |
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...
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WO/2011/037310 |
The present invention relates to a production method for a group 3 alkyl isocyanate, wherein the group 3 alkyl isocyanate is used as a solvent or dispersant in the presence of a Lewis acid catalyst when reacting a group 3 alkyl halide an...
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WO/2011/036062 |
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...
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WO/2011/021258 |
Provided is a process for the preparation of an N-substituted carbamic acid O-aryl ester derived from a ureido-containing compound. The process comprises a step of preparing an N-substituted carbamic acid O-aryl ester from both a ureido ...
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WO/2011/021257 |
Provided is a method for producing an N-substituted carbamic acid ester derived from an organic amine from an organic amine, a carbonic acid derivative, and a hydroxy compound containing one or more hydroxy compounds. The method comprise...
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WO/2011/018443 |
The invention relates to a method for producing diisocyanates by gas-phase phosgenation, starting from an educt flow comprising the corresponding diamines and a phosgene, the educt flows each being separately converted to the gas phase a...
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WO/2011/018443 |
The invention relates to a method for producing diisocyanates by gas-phase phosgenation, starting from an educt flow comprising the corresponding diamines and a phosgene, the educt flows each being separately converted to the gas phase a...
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WO/2011/015541 |
The invention relates to an improved multi-step method for the continuous production of diisocyanates by the reaction of the corresponding diamines with carbonic acid derivatives and alcohols in low-molecular monomer urethanes and the th...
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WO/2011/006609 |
The invention relates to a method for producing isocyanates by reacting primary amines with carbonyl dichloride in the gaseous phase. According to said method, the amine is evaporated, superheated and transported to the reactor with a re...
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WO/2011/006970 |
The present invention accordingly provides a process for preparing light-coloured polyphenylene-polymethylene polyisocyanates comprising the steps (a) providing an amount of chlorine, (b) separating the chlorine provided in the step (a) ...
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WO/2011/006807 |
The present invention relates to a process for preparing light-coloured polyphenylene-polymethylene-polyisocyanate (PMDI), comprising the steps (a) providing carbon monoxide and chlorine, (b) reacting carbon monoxide with chlorine to for...
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WO/2011/003531 |
The invention relates to a method for the continuous production of isocyanates by reacting the corresponding amines with phosgene in a reactor in the gas phase in the presence of at least one inert material, wherein a stream containing p...
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WO/2011/003532 |
The invention relates to a method for producing isocyanates by reacting primary amines with phosgene in a stoichiometric excess in the gas phase, wherein the excess phosgene is subsequently recovered and recirculated back into the reaction.
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WO/2010/149544 |
The present invention relates to a process for the production of isocyanates, preferably diisocyanates and polyisocyanates of the diphenylmethane series (MDI), by reacting an amine with phosgene in the liquid phase or in the gas phase to...
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WO/2010/149544 |
The present invention relates to a process for the production of isocyanates, preferably diisocyanates and polyisocyanates of the diphenylmethane series (MDI), by reacting an amine with phosgene in the liquid phase or in the gas phase to...
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WO/2010/149701 |
The invention relates to a method for sensing water ingress and the resulting corrosion in systems for producing isocyanates by reacting phosgene with one or more primary amines in a solvent. The invention further relates to an apparatus...
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WO/2010/121997 |
The invention relates to a method for producing methylene diphenyl diamine (MDA) by reacting formaldehyde and aniline in the presence of an acidic catalyst, characterized in that in the production of MDA, the oxygen content in the proces...
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WO/2010/115908 |
The invention relates to a method for producing isocyanates by reacting the corresponding amines with phosgene, optionally in the presence of an inert medium, wherein phosgene and amine are first mixed and are converted in a reactor to f...
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WO/2010/116871 |
Disclosed is a process for producing an urethane compound, which comprises reacting a primary amine, urea and/or an N-unsubstituted carbamic acid ester and an alcohol with one another in the presence of a catalyst comprising a first meta...
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WO/2010/106131 |
The invention relates to a method for producing isocyanates by converting the corresponding amine with phosgene in the gas phase, in the presence of an inert medium as applicable, wherein phosgene and amine are first vaporized and then o...
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WO/2010/106131 |
The invention relates to a method for producing isocyanates by converting the corresponding amine with phosgene in the gas phase, in the presence of an inert medium as applicable, wherein phosgene and amine are first vaporized and then o...
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WO/2010/105768 |
The invention is directed to a process for preparing aromatic carbamates which comprises the reaction of an aromatic amine with an organic carbonate in the presence of a catalyst characterized in that Zn4O(OAc)6 is used as catalyst.
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WO/2010/105768 |
The invention is directed to a process for preparing aromatic carbamates which comprises the reaction of an aromatic amine with an organic carbonate in the presence of a catalyst characterized in that Zn4O(OAc)6 is used as catalyst.
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WO/2010/103155 |
The invention relates to the production of carbamates in a single reactor (one-pot) using solid catalysts, involving the reaction between at least one nitro compound, an organic carbonate of formula (OR)(ORÂ’)C=O, a gas selected from hyd...
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WO/2010/100221 |
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, wherein the amine is evaporated in an evaporator to form a ga...
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WO/2010/095927 |
The invention relates to a method for separating an isocyanate mixture which contains at least two isomers of the respective isocyanate and various additional impurities simultaneously into two product streams which are characterized by ...
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WO/2010/076515 |
The invention relates to a method for the continuous preparation of a (poly)isocyanate, including a step of the phosgenation reaction of an amine in a piston reactor with internal recycling.
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WO/2010/063665 |
The invention relates to a method for producing isocyanates by reacting the corresponding amines with phosgene in the gaseous phase, optionally in the presence of an inert medium. According to said method, the amine and the phosgene are ...
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WO/2010/063400 |
A method for modifying diisocyanates for producing polyisocyanates, using a catalyst, in which method the diisocyanate used is obtained by obtaining it via phosgenation of the underlying diamine in the gas phase, wherein the gaseous reac...
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WO/2010/062490 |
The present invention provides methods of forming carbamates, ureas, and isocyanates. In certain embodiments these methods include the step of reacting an amine with an ester-substituted diaryl carbonate to form an activated carbamate wh...
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WO/2010/060773 |
The present invention relates to a process for manufacturing isocyanates from an amine compound. The process comprises the steps of a) Providing chlorine; b) Providing carbon monoxide; c) Reacting said chlorine and said carbon monoxide f...
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WO/2010/062490 |
The present invention provides methods of forming carbamates, ureas, and isocyanates. In certain embodiments these methods include the step of reacting an amine with an ester-substituted diaryl carbonate to form an activated carbamate wh...
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WO/2010/058647 |
A method for producing a methylene-crosslinked polyphenyl polyisocyanate, wherein sufficient hue improvement can be achieved while suppressing the amount of hydrogen chloride used therein. The method for producing a methylene-crosslinked...
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WO/2010/057909 |
The invention relates to a method for producing an isocyanate, comprising hydrogenation of an amimne-ciontaining mixture (Gi) in the presence of a copper containing hydrogenation catalyst to give a mixture (Gii) containing the amine and ...
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WO/2010/052230 |
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, wherein the amine and the phosgene are first mixed and reacte...
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WO/2010/052230 |
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, wherein the amine and the phosgene are first mixed and reacte...
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WO/2010/046327 |
The invention relates to a method for producing colourless polyisocyanates, in particular to reducing the colour of polyisocyanates.
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WO/2010/043532 |
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, wherein the amine and the phosgene are first mixed and conver...
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WO/2010/040675 |
Process for the simultaneous and continuous production of two different mixtures of predominantly 4,4'-MDI and 2,4'-MDI in a single-step suspension melt crystallisation process whereby a mixed diisocyanate feed stream [MIx] is used to pr...
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WO/2010/040675 |
Process for the simultaneous and continuous production of two different mixtures of predominantly 4,4'-MDI and 2,4'-MDI in a single-step suspension melt crystallisation process whereby a mixed diisocyanate feed stream [MIx] is used to pr...
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WO/2010/039972 |
The present disclosure relates, according to some embodiments, to apparatus, systems, and/or methods for fractionating a feed mixture comprising, for example, one or more isocyanates, light components, solvents and/or heavier components....
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WO/2010/039965 |
The present disclosure relates, according to some embodiments, to apparatus, systems, and/or methods for fractionating a feed mixture comprising, for example, one or more isocyanates, light components, solvents and/or heavier components....
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WO/2010/039972 |
The present disclosure relates, according to some embodiments, to apparatus, systems, and/or methods for fractionating a feed mixture comprising, for example, one or more isocyanates, light components, solvents and/or heavier components....
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WO/2010/039965 |
The present disclosure relates, according to some embodiments, to apparatus, systems, and/or methods for fractionating a feed mixture comprising, for example, one or more isocyanates, light components, solvents and/or heavier components....
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WO/2010/032455 |
Disclosed is a process for producing an isocyanate compound. The process is characterized by comprising reacting a nitro group in a nitro compound with carbon monoxide by using a complex or mixture of a compound of a metal belonging to ...
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WO/2010/021334 |
Disclosed is a method for pretreatment for the production of an isocyanate mixture. In the method, the following treatment is carried out before the production of an isocyanate mixture (G) by a process comprising a reaction step of reac...
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WO/2010/021335 |
Disclosed is a process for producing an isocyanate mixture (C). The process comprises a reaction step of introducing an amine mixture (A), phosgene (B), and an inert solvent into a reaction tank (10) and reacting the amine mixture (A) w...
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