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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 ...
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JP2008137948 |
To provide a polymerization-inhibiting method, and to provide a polymerizable monomer composition suitably usable for the method and containing a (meth)acryloyl group-containing isocyanate compound and a specific polymerization inhibitor...
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JP2008127293 |
To provide a carbamic acid ester compound solving various problems in a conventional production of an isocyanate compound by thermal decomposition of the carbamic acid ester compound, and to provide a method for producing an isocyanate c...
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JP2008007506 |
To develop a multistage method for producing an isocyanate in a very high chemical yield and a high space time yield with a small amount of accumulated phosgene.The method is one for producing an isocyanate by reacting an organic amine w...
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JP2008001701 |
To provide an economical and effective method substituting for conventional methods for the direct synthesis of isocyanate and polyisocyanate.This invention relates to a one-pot method for synthesis of isocyanates, polyisocyanates or mix...
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JP2007137886 |
To provide a method for producing 4,4'-diphenylmethane diisocyanate (MDI) and a polymer type MDI as a product of steps in a ratio desired from markets while satisfying quality standard specified by the market when demand of 2,4'-MDI is n...
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JP3957396 |
To suppress the formation of tars as a by-product and the discoloration of a reactional solution and produce an isocyanate compound useful in applications such as optical materials or a coating materials in a high yield by feeding phosge...
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JP2007077039 |
To provide a method for the crystallization of crude polyisocyanate capable of producing a highly purified product to be purified from crude polyisocyanate in high yield and provide a crystallization apparatus to perform the crystallizat...
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JP2007063200 |
To provide a manufacturing method of a polyisocyanate that permits reduction in the manufacturing cost of the polyisocyanate by effectively utilizing sulfuric acid used in a dehydration step, and a manufacturing apparatus of the polyisoc...
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JP2007055993 |
To provide a new ethylenically unsaturated group-containing isocyanate compound, to provide a method for producing the same, to provide a reactive monomer obtained from the isocyanate compound, and to provide a reactive polymer and appli...
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JP2007051092 |
To provide an efficient method for producing an aliphatic isocyanate containing an oxyalkylene group, capable of being utilized industrially.This method for producing the aliphatic isocyanate containing the oxyalkylene group is provided ...
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JP3920360 |
PURPOSE: To provide a polyisocyanate enabling the production of a polyurethane resin coating having excellent film properties and a blocked polyisocyanate. CONSTITUTION: The polyisocyanate, having 4.5-10 of average number of isocyanate f...
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JP2007039459 |
To provide a method for phosgenating an amine in a gas phase, capable of avoiding a weak point of a conventional heat exchanger or vaporizer.The method for producing an isocyanate comprises phosgenating the amine in the gas phase, wherei...
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JP2007023033 |
To provide a method for producing toluenediamines, and to provide a simple and economical method for separating the toluenediamines (TDAs) into m-TDA, o-TDA, low-bolining product(s) and high-boiling product(s).A method for producing m-to...
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JP2007023034 |
To provide a production method of an isocyanate, in which chlorine is formed from hydrogen chloride produced at a phosgenation step and is recycled.The isocyanate is produced by (a) reacting chlorine with carbon monoxide to produce phosg...
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JP2007016047 |
To provide an isocyanate compound that can be used as a surfactant.The compound has formula I. In the formula, Iso is an isocyanate after removing one isocyanate group or a residue of a polyisocyanate, E is an element such as P or the li...
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JP2007008828 |
To provide a preparation method of an acrylic ester and/or a methacrylic ester being reduced in the content of a side reaction product.In the preparation method of an acrylic ester and/or a methacrylic ester by heating a reaction materia...
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JP3901244 |
To produce a crude MDI having an isocyanate content as high as possible, a total chlorine content as low as possible and an iodine color number as low as possible and excellent in storage stability by minimizing the shortcomings of the p...
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JP2006348030 |
To provide a method for producing 4,4'-diphenylmethane diisocyanate(4,4'-MDI) free of drawbacks involved in prior arts through enabling raw materials suitable for producing the 4,4'-MDI, e.g. a suitable MDI mixture, to be transported fro...
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