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Matches 701 - 750 out of 1,680

Document Document Title
JP4064352B2  
JP4064342B2  
JP4045611B2  
JP2008503532A  
JP4040731B2  
JP2008007506A
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...  
JP2008001701A
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...  
JP2008500296A  
JP4029225B2  
JP4031550B2  
JP4031551B2  
JP2007332096A
To provide a method for storing and/or transporting a diphenylmethane-based isocyanate composition by which excellent storage stability in low temperature region is achieved and a polyurethane resin having desired various properties afte...  
JP2007326857A
To almost eliminate the discoloration of toluene diisocyanate (TDI) obtained as a product by reducing the concentrations of cyclic isocyanato-cycloalkenones, isocyanato-cycloalkanones and/or chloroisocyanato-cycloalkenes to a degree in w...  
JP2007326854A
To provide a process for coupled production of chlorine and isocyanates in which the diluted sulfuric acid used for both the processes can be returned to one or both of chlorine production and nitration reaction regardless of the operati...  
JP2007302672A
To provide a method for producing an isocyanate by using a recycled solvent while minimizing the formation of by-products, loss of yield and reduction of quality of the produced isocyanate. The method for producing the isocyanate include...  
JP2007291106A
To provide a method carried out so as to achieve at most 0.5 mass% residual concentration of phosgene in a hydrogen chloride stream when an isocyanate is produced and a stream containing hydrogen chloride, phosgene and optionally a solve...  
JP3997440B2  
JP2007223997A
To provide a method for producing an aliphatic isocyanate containing an oxyalkylene group, capable of being utilized industrially, in which the oxyalkylene group-containing aliphatic isocyanate can efficiently be obtained in high yield. ...  
JP2007217416A
To provide a method for preparing aniline which resolves a problem that the resulting aniline has to be separated by distillation prior to its use in a subsequent step. The method for preparing aniline comprises a step of purifying crude...  
JP2007197448A
To provide a method of production capable of being executed in a low energy consumption, simply producing a diphenylmethane-based diamine and polyamine and enabling the production of corresponding diisocyanate and polyisocyanate by conti...  
JP2007191479A
To provide a method for producing a light-colored isocyanate. A light-colored isocyanate is produced by reacting an mine or a mixture of two or more kinds of amines with phosgene containing less than 100 ppm of sulfur in an elemental or ...  
JP2007520460A  
JP2007137886A
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...  
JP3957396B2
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...  
JP2007077039A
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...  
JP2007063200A
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...  
JP2007055993A
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...  
JP2007051092A
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 ...  
JP3920360B2
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...  
JP2007039459A
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...  
JP2007023033A
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...  
JP2007023034A
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...  
JP2007016047A
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...  
JP2007008828A
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...  
JP3901244B2
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...  
JP2006348030A
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...  
JP3864209B2  
JP3881046B2
To provide a method for regulating a metal content, especially iron content in diphenylmethanediisocyanate or a diphenylmethanediisocyanate-based polyisocynate mixture. This method for reducing an iron content in diphenylmethanediisocyan...  
JP2006312619A
To provide a method for producing a polyisocyanate by which a reaction liquid can be circulated in a circulation line without installing a particular solution-sending means, and the removal of hydrogen chloride from the reaction liquid c...  
JP2006291188A
To provide a monomer having excellent reactivity, imparting high heat resistance and high refractive index and having two or more polymerizable functional groups having different polymerization characteristics and an aromatic ring in the...  
JP3869494B2
To obtain a triisocyanate free from any mechanical problem, by phosgenation of the corresponding triamine under specific conditions without the need of using a large quantity of solvent. In obtaining this compound of formula I [R is a 1-...  
JP2006282641A
To provide a device for producing a polyisocyanate capable of treating hydrogen chloride efficiently even on having a trouble in a chlorine-producing means for producing chlorine from hydrogen chloride produced as a by-product.This devic...  
JP2006282642A
To provide a device for producing a polyisocyanate while capable of producing chlorine stably from a by-product, hydrogen chloride, capable of reacting carbonyl chloride with a polyamine stably, and also treating the by-product, hydrogen...  
JP2006282640A
To provide a device for continuously producing a polyisocyanate, capable of aiming at the improvement of the yield of the polyisocyanate by bringing a polyamine in contact with a carbonyl chloride quickly after their feeding in order to ...  
JP2006282660A
To provide a method for producing a polyisocyanate, while effectively utilizing hydrogen chloride produced as a by-product in the production process of the polyisocyanate, capable of reducing the load to an environment, and a device so a...  
JP2006282666A
To provide a simple and economic process for preparation of diphenylmethane based di- and/or polyamine in which the formation of undesirable isomers, homologues or by-products is prevented or suppressed.The invention relates to the proce...  
JP3833702B2  
JP2006273717A
To improve the preservation stability and reproducibility of an isocyanate compound markedly.This method for stabilizing the isocyanate component suitably used for a synthetic resin such as a polyurethane, etc., and an optical resin such...  
JP2006248998A
To provide a method for producing a polyisocyanate by which the load on the environment can be reduced while effectively utilizing hydrogen chloride by-produced in a polyisocyanate production process.Carbonyl chloride is produced by feed...  
JP2006232797A
To provide a method for producing an isocyanate group-having (meth)acrylate derivative, by which an isocyanate group-having 3-chloropropionate derivative is dehydrochlorinated in profitable mild conditions to produce the isocyanate group...  

Matches 701 - 750 out of 1,680