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WO/2009/027232A1 |
The invention relates to a method for producing isocyanates.
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WO/2009/027234A1 |
The invention relates to a method for producing isocyanates.
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WO/2009/027418A1 |
The invention relates to a method for producing polyisocyanates, comprising the following steps: a) amines are reacted with phosgene; b) hydrogen chloride, excess phosgene, and, if necessary, the solvent are separated from the reaction m...
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WO/2009/023989A1 |
The present invention provides a jet reactor with flow ducts and a process for preparing isocyanates using it. The jet reactor with flow ducts situates the flow ducts in inner feed pipe which form cyclone and reinforce vortex, thereby am...
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WO/2009/024407A1 |
Process for the preparation of polyaromatic polyamines comprising the step of reacting formaldehyde with at least one monoaromatic monoamine and at least one monoaromatic compound containing at least two amino functions in the presence o...
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WO/2009/022600A1 |
Disclosed are: a novel process for producing a hydrazine compound useful as an insecticidal compound; an intermediate which can be used suitably in the process; and a process for producing the intermediate. The intermediate includes a sp...
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WO/2008/148631A1 |
The present invention relates to a process for the preparation of di- and polyamines of the diphenylmethane series, and to the preparation of di- and polyisocyanates of the diphenylmethane series from these di- and polyamines. The di- an...
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WO/2008/143207A1 |
A process for producing an ethylenically unsaturated isocyanate bearing an ether linkage under such conditions that the ether linkage little causes cleavage and the polymerization of the unsaturated group is inhibited. Specifically, a pr...
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WO/2008/120645A1 |
Disclosed are: a method for producing an isocyanate by using a composition comprising a carbamic acid ester and an aromatic hydroxy compound, which does not need to use any phosgene and does not have various problems accompanied by a con...
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WO/2008/086922A1 |
The present invention relates to a method for producing diisocyanates from diamines and phosgene in the gas phase.
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WO/2008/084824A1 |
A process by which an isocyanate can be stably produced for long in high yield without using phosgene. It is free from various problems encountered in prior-art techniques. The process for producing an isocyanate is characterized by subj...
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WO/2008/077672A1 |
The invention relates to a multi-stage process for the continuous, phosgene-free preparation of (cyclo)aliphatic diisocyanates that comprises the conversion of (cyclo)aliphatic diamines into the corresponding (cyclo)alkylene biscarbamate...
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WO/2008/074645A1 |
The present invention relates to a process for preparing 2-methylpentane 1,5-diisocyanate, 2-methylpentane 1,5-diisocyanate prepared in this way and its use.
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WO/2008/071564A1 |
The present invention relates to a process for preparing diisocyanates by reaction of the corresponding amines with phosgene, if appropriate in the presence of inerts, wherein the reaction takes place at least partly in an apparatus whos...
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WO/2008/069256A1 |
The present invention provides a method for preventing polymerization, and a polymerizable monomer composition favorably used therefor that includes a (meth)acryloyl group-containing isocyanate compound and a specific polymerization inhi...
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WO/2008/064887A1 |
The invention relates to a method for preparing an intermediate compound for a diisocyanate, comprising reacting a diamine represented by the formula H2N-(CH2)0-Y-(CH2)p-NH2 wherein Y is selected from CH(OX) or CH(COOX), o and p each are...
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WO/2008/062859A1 |
A process for the production of phenylalanine derivatives having quinazolinedione rings as represented by the general formula (1) or pharmaceutically acceptable salts thereof:(1) which comprises the following steps (a), (b) and (c): the ...
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WO/2008/059953A1 |
Disclosed is a method for stably producing an isocyanate with high yield for a long time without using phosgene. This method for producing an isocyanate does not cause the problems involved in the prior art. Specifically disclosed is a m...
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WO/2008/055898A1 |
The invention relates to a method for producing isocyanates by reacting the corresponding amines with phosgene, optionally in the presence of at least one inert medium, in the gas phase. Said method is characterised in that n amine flows...
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WO/2008/055899A1 |
The invention relates to a method for producing isocyanates from the corresponding amines and phosgene by carrying out the reaction in the gas phase in at least one reaction zone and guiding the reaction mixture to at least one zone in w...
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WO/2008/055904A1 |
The invention relates to a method for producing isocyanates by reacting amines with phosgene in the gas phase in at least one reaction zone, the reaction mixture being guided to at least one zone in which at least one liquid is injected ...
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WO/2008/037173A1 |
A hole jet reactor and its use, especially a process for the preparation of an isocyanate by the gas phase reaction of the aliphatic or aromatic di- or tri-amine with phosgene in the reactor. Mixing of the reactants in the reactor is imp...
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WO/2008/031755A1 |
The invention relates to processes for preparing isocyanates by splitting urethane, said process comprising the following process steps: (i) provision of synthesis gas from natural gas, coal, heavy oil or biomass gasification and product...
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WO/2008/025659A1 |
The invention relates to a multistage method for the continuous production of organic, distillable isocyanates, preferably diisocyanates, more preferred aliphatic or cycloaliphatic diisocyanates, by reacting the corresponding organic ami...
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WO/2008/015134A1 |
The present invention relates to a process for preparing pentamethylene 1,5-diisocyanate, to pentamethylene 1,5-diisocyanate prepared in this way and to its use.
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WO/2008/009897A1 |
The invention relates to the preparation of pregabalin and its opposite enantiomer, or a pharmaceutically-acceptable salt of either thereof, and to the intermediates used for their preparation.
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WO/2008/006775A1 |
The object of the invention is a method for producing isocyanates by reacting amines with phosgene, characterized in that the amine, or a mixture of amine and a solvent in the form of an aerosol, is mixed with gaseous phosgene, and the a...
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WO/2007/140380A2 |
In various aspects, the present teachings provide labeling reagents and sets of labeling reagents containing one or more heavy atom isotopes for the relative quantitation, absolute quantitation, or both, of hydroxylated compounds includi...
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WO/2007/122847A1 |
A reagent for organic syntheses with which a chemical reaction can be conducted in a liquid phase and unnecessary compound(s) can be easily separated at low cost from the liquid phase after completion of the reaction. The reagent for org...
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WO/2007/116761A1 |
Disclosed is a diphenylmethane isocyanate composition comprising a composition which is obtained by adding an alkylchlorosilane having 4-24 carbon atoms in total in the molecular structure to a diphenylmethane isocyanate having an acid d...
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WO/2007/112618A1 |
The present invention provided a kind of vinyloximinoether-containing methyl carbamate derivatives represented by the general formula (I), wherein R1, R2and R3 are, independently, alkyl, R4 and R5 are, independently, hydrogen or alkyl, R...
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WO/2007/088152A1 |
A process for preparing isocyanates by reacting olefins with isocyanuric acid in a solvent, the solvent being an ionic liquid. The ionic liquid is preferably selected from (A) salts of the general formula (I) in which n is 1, 2, 3 or 4, ...
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WO/2007/085534A1 |
The invention provides a process for simultaneously preparing 4,4'-diphenylmethanediamine and diphenylmethane diisocyanate and polyphenylenepolymethylene polyisocyanates, comprising the steps of a) preparing a mixture of diphenylmethaned...
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WO/2007/082818A1 |
The invention relates to a multi-stage method for continuously producing organic, distillable polyisocyanates, preferably diisocyanates, especially preferred aliphatic or cycloaliphatic diisocyanates, by reacting the corresponding organi...
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WO/2007/076998A1 |
The invention relates to a method for producing liquid, storage-stable isocyanate mixtures comprising carbodiimide (CD) and/or uretonimine (UI) groups, with low colour index. The invention also relates to the isocyanate mixtures obtained...
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WO/2007/051740A1 |
The invention relates to a process for preparing polyisocyanate mixtures containing at least 90% by weight, based on the polyisocyanate mixture, of a mixture a) of ai) diphenylmethane diisocyanate and aii) triphenylenedimethylene triisoc...
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WO/2007/049656A1 |
Disclosed are a novel fluoroadamantane derivative and a method for producing the same. Specifically disclosed are a method for producing a compound (2) shown below wherein a compound (1) shown below is reacted with an azide and then subj...
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WO/2007/036479A1 |
The present invention relates to a method for purifying residues containing isocyanates.
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WO/2007/031444A1 |
The invention relates to a multistage process for the continuous preparation of organic, distillable polyisocyanates, preferably of diisocyanates, particularly preferably of aliphatic or cycloaliphatic diisocyanates, by reacting the corr...
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WO/2007/028715A1 |
The invention relates to a method for producing isocyanates and a device suitable therefor and to the use thereof.
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WO/2007/020777A1 |
A process for producing an aliphatic isocyanate having an oxyalkylene group which comprises stepwise reacting either an aliphatic amine having an oxyalkylene group or a hydrochloride thereof with phosgene in an ester solvent in at least ...
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WO/2007/014936A2 |
The invention relates to a method for producing diisocyanates from diamines and phosgene in the gas phase.
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WO/2007/010996A1 |
An isocyanate has been widely used as a starting material for the production of a polyurethane material, a polyisocyanurate material or the like which is suitably applicable to the field of optical materials. Disclosed is a process for p...
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WO/2007/007887A2 |
A concentrating method and a concentrating system for concentrating polyisocyanate residues that can effectively concentrate polyisocyanate residues from crude polyisocyanate comprising polyisocyanate and polyisocyanate residues in a sho...
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WO/2006/134137A1 |
The invention relates to a method for preparing isocyanate adducts, comprising the following steps a) the isocyanate adduct is reacted with pure ammonia, b) the reaction product arising in step a) is then prepared and, c) the formed amin...
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WO/2006/131381A1 |
The invention relates to a method for producing N-aryl carbamates (urethanes) and N-aryl isocyanates. According to said method, aromatic nitro compounds are subjected to a reductive carbonylation in the presence of carbon dioxide and org...
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WO/2006/108591A1 |
The present invention relates to l H-Quinazoline-2,4-diones of formula (I) wherein R1 and R2 are as defined in the specification, their preparation, their use as AMPA-receptor ligands, in particular for the treatment of epilepsy or schiz...
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WO/2006/109576A1 |
It is intended to provide an apparatus for continuously producing polyisocyanate by supplying polyamine and carbonyl chloride and quickly contacting them to inhibit an undesirable side reaction between polyamine and polyisocyanate so tha...
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WO/2006/109416A1 |
An apparatus for polyisocyanate production in which chlorine can be stably produced from hydrogen chloride generated as a by-product, carbonyl chloride can be stably reacted with a polyamine, and the by-product hydrogen chloride gas can ...
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WO/2006/103189A1 |
The invention relates to a method for producing isocyanates, comprising the following steps: (1) producing a raw MDA mixture by reacting aniline with formaldehyde; (2) separating the raw MDA mixture into MMDA and PMDA; (3a) phosgenating ...
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