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Matches 301 - 350 out of 855

Document Document Title
JP2013087107
To provide a method for producing an organic isocyanate with a high yield, without using phosgene.There is provided a production method for an organic isocyanate, comprising a step of reacting a quaternary ammonium cyanate with an alcoho...  
JP2013063916
To provide a purification method for diisocyanate which can purify diisocyanate at a high yield from a mixture containing the diisocyanate and alcohol.Using a purification apparatus 3 having a rectifying tower 8, and a condensation syste...  
JP2012240953
To provide a method for manufacturing tolylene diisocyanate by which the tolylene diisocyanate containing 2,4-tolylene diisocyanate and 2,6-tolylene diisocyanate in a desired isomeric ratio can be manufactured.The method for manufacturin...  
JP2012233014
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.The present invention discloses a proce...  
JP2012233004
To provide a method for producing polyisocyanate by which a reaction liquid can be stably circulated in a circulation line without installing a particular solution sending means, and the stable removal of hydrogen chloride from the react...  
JP2012153709
To provide a method for producing N-substituted carbamic ester suitable for transfer and storage, and further suitable for producing isocyanate.In the method for producing N-substituted carbamic ester, organic amine, a carbonic acid deri...  
JP2012153708
To provide a method for producing N-substituted carbamic ester, a composition for transfer and storage containing the N-substituted carbamic ester, and a method for producing isocyanate by thermal decomposition of the compound.A composit...  
JP2012152202
To provide a method for producing pentamethylene diisocyanate, capable of more easily producing pentamethylene diisocyanate at a low cost and at a high yield.Pentamethylene diisocyanate is produced by: obtaining an aqueous solution conta...  
JP2012097123
To provide 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 like those in a conventi...  
JP2012067031
To provide a method of producing an N-unsubstituted carbamate capable of reducing generation of a by-product, the N-unsubstituted carbamate obtained by the production method, a production method for an isocyanate of producing the isocyan...  
JP2012017280
To provide a method for producing a toluene dicarbamate, by which the production of by-products can be reduced, to provide the toluene dicarbamate obtained by the production method, and to provide a method for producing toluene diisocyan...  
JP2012017278
To provide a method for producing a toluene dicarbamate, by which the production of by-products can be reduced, to provide the toluene dicarbamate obtained by the production method, and to provide a method for producing toluene diisocyan...  
JP2011236163
To provide a method for treating a carbonate for efficiently utilizing the carbonate.The method for treating the carbonate comprises: bringing at least one kind of the carbonate selected from dialkyl carbonate, diaryl carbonate and alkyl...  
JP2011201863
To provide pentamethylene diisocyanate enabling efficient preparation of a modified isocyanate and a polyurethane resin having excellent characteristics, a polyisocyanate resin obtained using the pentamethylene diisocyanate, a method for...  
JP2011201795
To provide a process for producing an alkylaryl carbamate which can industrially obtain the alkylaryl carbamate with good workability and productivity and an isocyanate which is obtained with the use of the alkylaryl carbamate.The alkyla...  
JP2011162442
To provide a method for treating a catalyst that reduces a production cost of an isocyanate while permitting industrially efficient production of the isocyanate.A primary amine, urea and/or an N-unsubstituted carbamic acid ester and an a...  
JP2011132175
To provide a method for treating an isocyanate residue, whereby the isocyanate residue obtained from a decomposition liquid of carbamate can be decomposed into an amine.The method for treating the isocyanate residue comprises: separating...  
JP2011132159
To provide a method of producing an aromatic polyisocyanate, employing a hydrochloride method and capable of shortening the operation time in its production process.The method of producing an aromatic polyisocyanate comprising a first re...  
JP2011132160
To provide a method of producing an aliphatic polyisocyanate employing a hydrochloride method and capable of shortening the operation time in its production process to improve its productivity.The method of producing an aliphatic polyiso...  
JP2011111424
To provide a new alicyclic isocyanate compound having a trans structure, and expected to have utility as a material for a polyurethane resin and a polyurea resin free from yellowing and having high hardness and high modulus because of ha...  
JP2010270147
To provide a method for producing methylenedianiline (MDA) by reacting aniline with formaldehyde in the presence of acid catalysts while minimizing the N-methyl-MDA content as an undesirable by-product.The semicontinuous method for produ...  
JP2010120870
To provide a method for producing a methylene-crosslinked polyphenyl polyisocyanate which achieves sufficient hue improvement while suppressing an amount of hydrogen chloride used.The method for producing a methylene-crosslinked polyphen...  
JP2010111610
To provide an organic polyisocyanate composition effectively prevented from discoloring.The organic polyisocyanate composition is obtained by blending an organic polyisocyanate compound, a phenolic anti-oxidation agent, and an organic ph...  
JP2010111611
To provide an organic polyisocyanate composition effectively prevented from discoloring.The organic polyisocyanate composition is obtained by blending an organic polyisocyanate compound, a phenolic anti-oxidation agent, and an organic ph...  
JP2010100542
To provide a method for producing silica particles each having a cross-linking functional group, such as an isocyanate group or an epoxy group, useful for binding a biomolecule or the other to the silica particle.This invention relates t...  
JP2010077165
To provide a method for synthesizing a fluorinated compound using a carbamoyl fluoride as a fluorinating source.The method for using a carbamoyl fluoride as fluorinating agent is disclosed. The method comprises treating a derivative bear...  
JP2010047501
To provide a method of pre-treatment before producing an isocyanate mixture for obtaining the isocyanate mixture reduced in the contents of metals, such as iron, affecting the reactivity of the isocyanate mixture.There is provided the pr...  
JP2010047503
To provide a method for producing an isocyanate mixture reduced in the content of a metal affecting the reactivity of the isocyanate mixture.There is provided the method for producing the isocyanate mixture C, having a reaction process f...  
JP2010018572
To provide a method for producing methylene-crosslinked polyphenyl polyisocyanate exhibiting high hue-improving effects.The production method of the methylene-crosslinked polyphenyl polyisocyanate comprises a phosgenation reaction step o...  
JP2010018534
To provide an industrially easily applicable method for producing a polyisocyanate by which the polyisocyanate having excellent hue can be produced from a raw material in an amount smaller than that in a conventional technique.The method...  
JP2009227677
To provide a new method leading to improvement of coloration of a produced diamine/polyamine mixture of diphenylmethane series or coloration of isocyanate and polyurethane produced from the mixture.In the method for producing diamines an...  
JP2009209144
To find out a comprehensive method for producing MDI, significantly reducing or completely avoiding a waste liquid obtained by preparation of a precursor MDA and loading of salts discharged to the outside of overall processes through the...  
JP2009203198
To provide a method for producing a polyisocyanate, which sufficiently improves hue of a polyisocyanate and controls formation of precipitate during purification.The method for producing a polyisocyanate comprises a contact process of re...  
JP2009196991
To provide a method for producing a solvent-free isocyanate by providing a possibility of reducing the quantity of the solvent required in the flow of dephosgenated isocyanate, in this case, the isocyanate flow must be separated in the p...  
JP2009190024
To provide a mixer reactor which ensures a through mixing for two flowable substances of widely different viscosities in a quality and speed.The mixer reactor includes a substantially rotationally symmetric housing which includes a distr...  
JP2009149614
To provide a light-colored isocyanate as a raw material for a light-colored or uncolored polyisocyanate.The method for producing the light-colored isocyanate is regulated as follows. The PRI (polarographically reducible impurity) value o...  
JP2009126865
To produce an aromatic diisocyanate by reacting a corresponding primary aromatic diamine with phosgene in a vapor phase.Phosgene is reacted with the primary aromatic diamine within a mean residence time of from 0.05 to 15 seconds. The ar...  
JP2009120528
To provide a method for producing a polyisocyanate, which can be suitably used for producing a product polyisocyanate having slight discoloration and low acidity while reducing an energy consumption and purifying an unpurified polyisocya...  
JP2009119346
To provide a flash tank which prevents the corrosion by a corrosive fluid and is capable of attempting the enhancement of durable performance, to provide a depressurizing device equipped with the flash tank and to provide a polyisocyanat...  
JP2009108034
To provide fluorinated carbamates of high purity more efficiently in a high yield.The manufacturing method of fluorinated carbamates comprises causing an amine or a polyamine to react with a fluorinated carbonate in the presence of a cat...  
JP2009051785
To provide an isocyanoacetic acid alkyl ester liquid composition enabling inhibiting the discoloration with time of an isocyanoacetic acid alkyl ester during its storage.The liquid composition comprises an isocyanoacetic acid alkyl ester...  
JP2009051838
To provide a process for producing a product containing an isocyanate with a remarkably reduced hydrolyzable chlorine content and total chlorine content without requiring a further purification step.The process comprises a step of provid...  
JP2009013121
To provide a method for purifying cyclohexyl isocyanate in a simple operation without the need of heating treatment on reactive reagent addition or conducting distillation, or with neither dealing with exposure nor using a large-scale ap...  
JP2009001477
To provide a process for reducing the content of a sulfur component in an HCl-containing process gas from isocyanate equipment as efficiently as possible.A process for producing isocyanate by phosgenation of the corresponding amine is pr...  
JP2008179613
To facilitate the process control of a production process especially an isocyanate production process.The process for controlling the production process such as the isocyanate production process conducted with a production facility havin...  
JP2008174549
To provide a vapor-phase isocyanate production method which is commercially advantageous.The production of an isocyanate by reacting a suitable primary amine with phosgene in a vapor phase is practiced under adiabatic conditions by ensur...  
JP2008163027
To provide a new process for conditioning isocyanates or mixtures of isocyanates by removing organophosphorus components in such a suitable manner that the organophosphorus compounds no longer interfere with processing of the isocyanates...  
JP2008150378
To provide a simple process for producing TDI in which the cost and the energy consumption necessary for the post-treatment of residues are minimum, and further, the loss in the yield of TDI and the formation of residual substances to be...  
JP2008150372
To provide a process for producing an isocyanate by a reaction of corresponding amines with phosgene in the gas phase in which, once the optimum residence time has been reached, the reaction is effectively stopped within a short time and...  
JP2008143872
To provide an additive effective for the long term stabilization of bis(isocyanatomethyl)norbornane widely used as a raw material of a polyurethane-based material, a polyisocyanulate-based material, etc., and suitably used in an optical ...  

Matches 301 - 350 out of 855