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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...
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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...
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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...
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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...
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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.
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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 ...
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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...
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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...
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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...
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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...
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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 ...
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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 ...
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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...
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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...
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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...
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WO/2011/048134A1 |
What is proposed is a process for preparation and distillative processing of diphenylmethane diisocyanate (MDI), proceeding from a benzene-containing feed stream, wherein, in a catalytic hydrogenation of nitrobenzene to aniline, steam is...
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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...
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WO/2011/037310A1 |
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/2011/021257A1 |
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/2011/021258A1 |
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/2011/015541A1 |
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/2011/006609A1 |
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/2011/003532A1 |
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/2010/121997A1 |
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/2010/116871A1 |
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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WO2010109855A1 |
Provided is an antifouling agent which comprises a secondary isocyanocyclohexane compound represented by general formula (1) [wherein R represents an alkyl group]. This antifouling agent is useful for preventing contaminations and damage...
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WO2010110142A1 |
Disclosed is a process for producing a urethane compound, which comprises reacting a primary amine, either urea and/or an N-unsubstituted carbamic acid ester, and an alcohol with one another in the presence of a compound containing a non...
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WO/2010/106131A2 |
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/2010/100221A1 |
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/2010/095927A1 |
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/2010/076515A1 |
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/2010/060773A1 |
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/2010/058647A1 |
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/2010/057909A1 |
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/2010/052230A2 |
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/2010/043532A1 |
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/2010/040675A2 |
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/2010/039965A2 |
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/2010/039972A2 |
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/2010/032455A1 |
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/2010/021334A1 |
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/2010/021335A1 |
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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WO/2010/016540A1 |
Disclosed is a method for inhibiting polymerization of an ethylenically unsaturated carboxylic acid ester compound containing an isocyanate group. Also disclosed is a method for producing an ethylenically unsaturated carboxylic acid est...
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WO/2010/007836A1 |
Provided is a manufacturing method for methylene cross-linked polyphenyl polyisocyanates with good hue-improving effects. The manufacturing method for methylene cross-linked polyphenyl polyisocyanates is provided with a phosgenation reac...
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WO/2010/004818A1 |
Disclosed is a method for producing a polyisocyanate, which comprises: a polyamination step wherein an aromatic polyamine represented by general formula (I) is obtained by polyamination in an acidic ionic liquid using aniline and an alde...
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WO/2009/155085A2 |
This disclosure is related to solvents, monomer, polymers, crosslinking agents and other additives, particularly those useful in the paints and coatings industry that are derived from renewable resources.
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WO/2009/154077A1 |
Disclosed is a method for producing a polyisocyanate, which can sufficiently improve hue of a polyisocyanate, while reducing the amount of hydrogen chloride used therein. The method for producing a polyisocyanate comprises a phosgenation...
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WO/2009/151005A1 |
Disclosed is a method for efficiently producing an isocyanate compound at a low reaction temperature at a low reaction pressure without using a highly toxic phosgene and without going through a complicated process. Specifically, an isocy...
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WO/2009/144148A1 |
Low chlorine, multi-staged method for producing cycloaliphatic diisocyanates. The invention relates to a multi-staged method for the continuous low-chlorine production of cycloaliphatic diisocyanates, comprising the synthesis of diaminod...
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WO/2009/145263A1 |
Disclosed are a process suited to large scale synthesis with high yield for producing oseltamivir phosphate, in which a preparation of oseltamivir phosphate which is highly safe as a pharmaceutical product can be produced, and an interme...
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