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Matches 1 - 50 out of 1,957

Document Document Title
WO/2018/124526A1
The present invention provides a production method which can produce high purity aliphatic isocyanates, especially xylene isocyanate, in a high yield through a simple method without adding a separate step by adding a side reaction inhibi...  
WO/2018/114846A1
The industrial scale preparation of isocyanates gives rise to distillation bottom streams that are in need of further workup. These distillation bottom streams still also contain, as well as a distillation residue consisting of compounds...  
WO/2018/110947A1
The present invention relates to a toluene diisocyanate purification method enabling acquisition of a product having a small amount of dimers in a final product by means of using a reactive dividing wall distillation column during toluen...  
WO/2018/087415A1
The invention relates to a method for obtaining polymers bearing isocyanate groups from amino polymers, with both aromatic and aliphatic amines, in a simple manner and under mild conditions. The polymers bearing isocyanate groups can be ...  
WO/2018/079502A1
This pentamethylene diisocyanate production method comprises: a reaction step for reacting carbonyl chloride and pentamethylene diamine with each other so as to obtain a reaction mixture containing pentamethylene diisocyanate and contain...  
WO/2018/046622A1
The invention relates to a process for preparing liquid, storage-stable isocyanate mixtures having carbodiimide (CD) and/or uretonimine (UI) groups or prepolymers derived therefrom, wherein (i) in a first step a starting isocyanate which...  
WO/2018/041799A1
The invention relates to a method for producing isocyanates, according to which exhaust flows provided for the combustion are guided through an adsorption device before being supplied into the exhaust gas combustion process, and are ther...  
WO/2018/033536A1
The present invention relates to a process for producing isocyanates in process chains, each of which produce an isocyanate end product via at least one intermediate product, wherein the heat energy liberated in a first production plant ...  
WO/2018/002342A1
The present invention relates to a method and a system for separating and treating impurities from a hydrogen chloride liquid mixture, and particularly relates to a method and a system for separating and treating impurities from a hydrog...  
WO/2017/174765A1
The invention relates to a method for producing xylylene diisocyanate (XDI), in particular meta-xylylene diisocyanate (mXDI), comprising the following steps: a) phosgenation of xylylene-diamine (XDA), in particular m-xylylene-diamine (mX...  
WO/2017/148795A1
The present invention relates to the use of isophthalic acid dichloride for increasing the storage stability of xylylene diisocyanate and to compositions containing xylylene diisocyanate and isophthalic acid dichloride.  
WO/2017/104709A1
Provided is a production method for an isocyanate compound such as a 3-methyl-2-methoxymethyl-1-isocyanate benzene. An isocyanate compound such as 3-methyl-2-methoxymethyl-1-isocyanate benzene can be produced at high yield as a result of...  
WO/2017/093215A1
The invention relates to the production of isocyanates by means of phosgenation of the corresponding primary amines in the gas phase, wherein the educt flows of amine and phosgene are fed separately to a reactor through a pre-heated iner...  
WO/2017/076551A1
The invention relates to a distillation column for separating a multicomponent mixture into at least three fractions. The distillation column has at least one separating wall and at least one material exchange element (1) above the at le...  
WO/2017/063883A1
The invention relates to a method for preparing an aromatic polyisocyanate in an isocyanate plant comprising a reaction section for a phosgenation reaction, wherein a primary aromatic amine is reacted with phosgene compounds in a reactio...  
WO/2017/055311A1
The invention relates to a continuously operated method for producing isocyanates by reacting the corresponding amines with phosgene. When changing the target production capacity starting from a starting state with a specified production...  
WO/2017/050776A1
The invention relates to a method for an economically and technically improved embodiment of a production interruption in a production method for isocyanates by phosgenation of the corresponding amines, in which the entire production pla...  
WO/2017/013154A1
The invention relates to a method for producing a cyclic isocyanate (B) on the basis of a composition (Z) which has at least one component (A) that has at least one cycloalkane ring with at least four ring carbon atoms. The cycloalkane r...  
WO2017009311A1
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 reacti...  
WO/2017/001320A1
The invention relates to an improved process for making available, for an intended downstream application (i.e. for a chemical reaction), the hydrogen chloride by-product that is produced during production of an isocyanate by phosgenatio...  
WO/2017/001322A1
The present invention relates to a continuous process for preparing a polyisocyanate, in which a polyamine and phosgene are first converted predominantly to carbamoyl chloride and amine hydrochloride and only in minor proportions to poly...  
WO/2016/198404A1
The invention relates to a method for the preparation of diisocyanates by the reaction of the corresponding primary diamines with phosgene in the gas phase, wherein the pressure in the diamine evaporation chamber during the transfer of t...  
WO/2016/193245A1
The present invention relates to an isocyanate composition, comprising: a1) a toluene diisocyanate residue, wherein the toluene diisocyanate residue is selected from the distillation residue of toluene diisocyanate prepared by phosgene m...  
WO/2016/177761A1
The present invention relates to a process for the preparation of an isocyanate compound comprising the steps of: a) Reacting an amine compound A having at least one primary amino group with CO2 and an organotin compound S having at leas...  
WO/2016/156188A1
The invention relates to a process for preparing isocyanates by carbamate dissociation, in which liquid carbamate (3) and a gaseous auxiliary (11) are introduced into a reactor (1) so that a continuous liquid phase in which the gaseous a...  
WO/2016/142475A1
The invention relates to a method for separating a phosgene- and hydrogen chloride-containing material flow (5), wherein the hydrogen chloride- and phosgene-containing material flow (5) is supplied to a distillation column (1), a phosgen...  
WO/2016/120167A1
The invention relates to polyphenylene polymethylene polyisocyanates having an NCO number of at least 29% and containing less than 2 wt% of carbamides, less than 8 wt% of carbodiimides or uretonimines, and less than 1000 ppm of organic c...  
WO/2016/103283A1
The present invention provides bio-based aromatic diisocyanate of formula (I). [Formula should be inserted here] wherein X is –OCH3, Y is selected from -H or –OCH3, and m = 0-12. The present invention further provides a method for pr...  
WO/2016/098561A1
By reacting 3-methyl-2-methoxymethyl aniline, etc. with a phosgene compound in the presence of a tertiary amine at 10°C-14°C in at least one kind of solvent selected from a group consisting of chlorobenzene and ortho-dichlorobenzene, a...  
WO/2016/048695A1
A compound for imparting water repellency and optionally stain release to substrates wherein the compound is prepared by reacting (a) at least one isocyanate group-containing compound, (b) at least one isocyanate-reactive compound and (c...  
WO/2016/042124A1
The invention relates to a method for producing isocyanates by reacting the corresponding primary amines with phosgene in the gas phase, wherein the phosgene is injected into the gaseous amine flow in the interior of a flow tube via an o...  
WO/2016/042125A1
The invention relates to a method for producing 1,5-pentanediisocyanate (PDI) by reacting 1,5-pentanediamine (PDA) with phosgene in the gas phase.  
WO/2015/188389A1
A heater for heating and vaporizing droplets in gas stream, comprising a heater housing and a heater body located inside the heater housing, wherein the heater housing is provided with an airflow inlet and an airflow outlet, the airflow ...  
WO/2015/162106A1
The invention relates to a method for producing isocyanates by reacting primary amines with phosgene in a solvent, the solvent containing a dialkyl carbonate.  
WO/2015/155365A3
The invention relates to a method for producing the isomers 1,3- and/or 1,4-xylylene diisocyanates by reacting the corresponding 1,3- and/or 1,4-xylylene diamines with phosgene in the gaseous phase.  
WO/2015/155367A1
The invention relates to a composition for producing transparent polythiourethane bodies, containing or consisting of A) a polyisocyanate component that contains at least one polyisocyanate having an isocyanate group functionality of at ...  
WO/2015/155366A1
The invention relates to a composition for producing transparent polythiourethane bodies containing or consisting of A) a polyisocyanate component containing at least one polyisocyanate with a functionality of isocyanate groups of at lea...  
WO/2015/149381A1
Disclosed are a solvent refining method for isocyanate prepared by the phosgene method and multistage absorbing towers used in same. Solvent to be refined which contains water, iron, and/or phosgene , hydrogen chloride and other material...  
WO/2015/144658A1
The invention relates to a method for preparing isocyanates by the phosgenation of the corresponding amines in which problems resulting from the formation of deposits in apparatuses of the reaction segment during activation (starting) an...  
WO/2015/144681A1
The invention relates to a method for operating a gas-phase phosgenation plant (100) for reacting an amine (2) with phosgene (1) to give the corresponding isocyanate (4), wherein in order to start up the gas-phase phosgenation plant (100...  
WO/2015/144682A1
The invention relates to a process for operating a gas phase phosgenation plant (100) for reacting an amine (2) with phosgene (1) to give the corresponding isocyanate (4), in which the gas phase phosgenation plant (100) is shut down by f...  
WO/2015/121211A1
A process for extracting a phosgene compound, comprising providing a membrane extracting unit comprising at least one extracting cell that comprises at least one membrane contactor module having at least two sides, a gas side and a liqui...  
WO/2015/091807A1
The invention relates to a method for separating isocyanate monomers from isocyanate-containing mixtures by supplying the mixture in a solvent and dialyzing the dissolved mixture against the solvent by means of a permeable membrane havin...  
WO/2015/081610A1
Degradable isocyanate compounds, methods for making these compounds, and uses of these compounds for preparing degradable cross-linked polymers and composite materials are provided.  
WO/2015/024859A1
The present invention relates to a process for obtaining an organic isocyanate from a phosgenation product comprising the isocyanate, comprising the following steps: a) workup of the phosgenation product, the workup comprising at least o...  
WO/2015/025773A1
This method for producing an m-xylylene diisocyanate contains: a reaction step for generating a bisamide compound by reacting, in the presence of an acidic liquid, a monohalogenated benzene, formaldehyde, and an amide compound indicated ...  
WO/2015/016148A1
In the present invention, the method for producing trans-bis(aminomethyl)cyclohexane includes the following: a trans isomerization step of isomerizing cis-dicyanocyclohexane into trans-dicyanocyclohexane by heating dicyanocyclohexane, wh...  
WO/2015/016263A1
 The present invention relates to a reaction method having a step for supplying a liquid including at least one species of a raw material compound and a low-boiling compound having a standard boiling point lower than the standard boili...  
WO/2015/011070A3
The invention relates to a method for producing an isocyanate by reacting the corresponding primary amine with phosgene in a reactor (100) which comprises at least one reaction zone (110) and a quenching zone (120) arranged below said re...  
WO/2014/189120A1
 The purpose of the present invention is to provide, with a high degree of reproducibility, a catalyst which can be used to produce isocyanate compounds with a high degree of selectivity and at high yield, and which can be easily separ...  

Matches 1 - 50 out of 1,957