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JP5700595B2 |
The present invention provides a separation method of separating (A) and (B), comprising: a step of separating at least either an active hydrogen-containing compound (A) or a compound (B) that reversibly reacts with (A) from a mixture co...
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JP5699128B2 |
The invention relates to a process for preparing isocyanates by reacting the corresponding amines with phosgene, optionally in the presence of an inert medium, in which phosgene and amine are first mixed and converted to the isocyanate i...
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JP5692964B2 |
The present invention relates to a multiple-stage process for the continuous preparation of organic, distillable polyisocyanates, preferably diisocyanates, more preferably aliphatic or cycloaliphatic diisocyanates, by reaction of the cor...
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JP5686725B2 |
The continuous or quasi-continuous process for lightening organic polyisocyanates with ozone-containing gas, the treatment of the organic polyisocyanate being effected with an ozone-containing gas which furthermore comprises at least one...
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JP5682622B2 |
The present invention relates to a method of producing a carbamate compound, comprising reacting a fluorine-containing carbonic diester compound represented by formula (1) and a non-aromatic diamine compound represented by formula (2) wi...
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JP5675011B1 |
1,4-Bis (isocyanatomethyl) cyclohexane contains a trans form in a proportion of 70 mol% or more and 95 mol% or less with respect to the total amount of the cis form and the trans form, and is a compound represented by the following formu...
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JP5666584B2 |
A process for preparing diisocyanates by gas-phase phosgenation starting out from a feed stream comprising the corresponding diamines and a phosgene-comprising feed stream, in which the feed streams are separately converted into the gas ...
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JP5657710B2 |
An object of the present invention is to improve the stability of an ethylenically unsaturated compound having an isocyanate group in the molecule by preventing a polymerization, a multimerization reaction and a discoloration reaction of...
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JP5657709B2 |
An object of the present invention is to improve the stability of an ethylenically unsaturated compound having an isocyanate group in the molecule by preventing a polymerization of the ethylenically unsaturated compound. The present inve...
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JP2015010183A |
To provide a diisocyanate composition which enables synthesis of a polyisocyanate composition suppressed in coloring.The diisocyanate composition comprises 1,6-diisocyanato-hexane and 1-100 mass ppm of a chlorine-containing compound rela...
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JP2015501313A |
In the present invention, the first reaction stream containing amine is supplied in the liquid phase and the second reaction stream containing phosgene is supplied in the gas phase, optionally in the presence of an inert medium in the re...
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JP5650777B2 |
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JP2014534053A |
Embodiments of the present invention provide a mixing conduit (100) having at least a cylindrical inner surface or a cylindrical outer surface and an increased number of jet openings (102). The mixing conduit according to an embodiment o...
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JP5643517B2 |
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JP2014532616A |
The present invention relates to a method for producing a pale polyisocyanate by phosgenation of a mixture containing a polycyclic aromatic polyamine having an o-phenylenediamine unit incorporated through MDA and a methylene bridge. The ...
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JP5628332B2 |
A process for coproducing di- and/or polyisocyanates and glycols, comprising process stages A, B, C and E for preparing glycols and process stages A, C, D, E, F and G for preparing di- and/or polyisocyanates, which comprises accomplishin...
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JP5615268B2 |
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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JP5615644B2 |
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JP5612115B2 |
An object of the present invention is to provide the separation of a mixture containing plural types of reversibly reacting compounds, especially, a method for efficiently separating an isocyanate from a mixture containing the isocyanate...
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JP5602422B2 |
Producing primary isocyanates comprises feeding at least one feed stream containing phosgene (P) and at least one feed stream containing primary amines (A) to the reaction chamber through a nozzle assembly, where the amines are reacted a...
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JP5599130B2 |
The invention relates to a process for the production of toluene diisocyanate, in which the crude toluenediamine obtained from the hydrogenation is purified and then phosgenated. The purification step reduces the total amount of cyclic k...
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JP5599129B2 |
Preparation of isocyanate by phosgenating the amine in the presence of a solvent comprise (a) preparing an amine solution and phosgene solution in the solvent; (b) mixing the amine solution and phosgene solution, and converting the solut...
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JP2014524892A |
Objects of the present invention are organic polyisocyanate, especially diisocyanate, It is the multi-process method for manufacturing a fatty series or alicyclic diisocyanate continuously advantageously especially by reactions and these...
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JP2014177472A |
To provide a manufacturing apparatus of an isocyanate compound capable of manufacturing, from a nitro compound and carbon monoxide, a corresponding isocyanate compound in a high efficiency under mild carbon monoxide pressure and temperat...
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JP5595271B2 |
The present invention provides a flow duct type jet reactor and a process for preparing isocyanates using it. The flow duct type jet reactor situates flow ducts in inner feed pipe which form whirlpool and reinforce vortex, thereby amine ...
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JP5592786B2 |
An object of the present invention is to provide a process that enables isocyanate to be produced stably over a long period of time and at high yield without encountering problems of the prior art during production of isocyanate without ...
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JP5591289B2 |
An object of the present invention is to provide a process allowing long-term, stable production of isocyanates at a high yield without the various problems found in the prior art during production of isocyanates without using phosgene. ...
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JP5590570B2 |
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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JP5586624B2 |
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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JP5584632B2 |
An aniline derivative of formula: useful in synthesis of insecticides.
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JP5583879B1 |
The purification method of an aldehyde compound of the present invention includes a step of neutralizing a reaction solution containing an aldehyde compound by adding water and a base compound to the reaction solution, and a step of dist...
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JP2014520086A |
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...
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JP5574684B2 |
Preparing aromatic isocyanates, comprises reacting aromatic primary amines with phosgene in the gas phase, above the boiling temperature of the amines, in a reactor comprising a reaction chamber which is essentially rotationally symmetri...
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JP5574603B2 |
Low-viscosity preparations of isocyanate compounds in solvents, and their use.
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JP5576390B2 |
The invention relates to a process for preparing isocyanates by reacting the corresponding amines with phosgene in the gas phase, optionally in the presence of an inert medium, in which the amine and the phosgene are first mixed and conv...
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JP5574691B2 |
Preparing meta-toluene diisocyanate comprises reacting meta-toluenediamine with phosgene in the gas phase, where: the meta-toluenediamine and phosgene are separately added into a reactor, and a gaseous meta-toluenediamine is produced by ...
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JP5567477B2 |
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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JP5566149B2 |
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JP5563887B2 |
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JP5563886B2 |
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JP5563816B2 |
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JP5557841B2 |
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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JP5548684B2 |
The invention relates to a process for preparing isocyanates by reacting the corresponding amines with phosgene in the gas phase, if appropriate in the presence of at least one inert medium, the phosgene being passed into a reactor (21) ...
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JP5543474B2 |
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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JP5525500B2 |
The present invention relates to 1H-Quinazoline-2,4-diones of formula (I) wherein R 1 and R 2 are as defined in the specification, their preparation, their use as pharmaceuticals, and pharmaceutical compositions containing them. Further,...
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JP5518726B2 |
This invention relates to novel compounds with ester linkage(s) capped with either electron deficient olefinic linkage(s) or group(s) or reactive functional groups (termed herein as "active methylene reagents"), and curable compositions ...
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JP5518056B2 |
Procedure for preparing carbamates comprising reaction between at least: an amine or polyamines, an organic carbonate of formula (OR)(OR')C=O, a catalyst formed at least by a support selected from among at least a metal oxide, a micropor...
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JP5518605B2 |
A method for producing toluenedicarbamate includes a carbamate production process of producing toluenedicarbamate by reaction between toluenediamine, urea, and/or N-unsubstituted carbamic acid ester, and alcohol; and a benzoyleneurea red...
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JP5519942B2 |
Producing methylene diphenyl diisocyanates, comprises: (a) reacting aniline with formaldehyde in the presence of hydrochloric acid as catalyst to a mixture of di- and polyamines of diphenylmethane and subsequently at least partially neut...
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JP5502286B2 |
Preparing chlorine comprises subjecting a hydrogen chloride stream having a sulfur content of less than 100 ppm, based on weight of the hydrogen chloride stream, to catalytic oxidation. An independent claim is included for preparing an i...
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