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Patent Searching and Data


Matches 701 - 750 out of 1,647

Document Document Title
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...  
JP2006519793A  
JP2006225385A
To provide a method for producing diphenylmethane-based diamine and polyamine (MDA), by which the diphenylmethane-based diamine and polyamine can simply and economically be produced, while saving the employment of aniline produced by hyd...  
JP2006206593A
To provide 2,4'-MDI containing minute amounts of 2,2'-MDI.The method comprises the following process: An isomeric starting mixture of diisocyanato-diphenylmethanes comprising 2,2'-diisocyanato-diphenylmethane, 2,4'-diisocyanato-diphenylm...  
JP2006517513A  
JP3801653B2  
JP2006169243A
To provide a method for producing a pale liquid mixture of organic isocyanates with storage stability having carbodiimide groups and/or uretonimine groups, capable of forming the liquid mixture of the isocyanates with a low color number ...  
JP2006160684A
To provide an organic polyisocyanate composition having improved storage stability, to provide a method for producing the organic polyisocyanate, to provide an adhesive composition, and to provide a coating composition.The organic polyis...  
JP3806916B2
To obtain a polyisocyanate highly including uretdione groups by carrying out the uretdionization in a specific organic solvent suppressing the isocyanulation. The compound is obtained by using (A) a linear aliphatic diisocyante (preferab...  
JP3804689B2
To obtain a hardly colored urethane-based resin having a urethane or a thiourethane structure in the system by treating a polyisocyanate compound in the presence of oxygen. The preserving treatment of a polyisocyanate compound, especiall...  
JP3796610B2
To provide a simple method for producing an organic isocyanate excellent in heat stability at slight risk and provide a method for improving heat stability of the organic isocyanate. This method for producing an organic isocyanate compri...  
JP3795115B2
To provide a method for producing a polyisocyanate blocked with 3,5-dimethylpyrazole, and capable of omitting the necessity of the separate production of a blocking agent and handling of the same as a solid. This method for producing a p...  
JP2006104135A
To provide a new aromatic diisocyanate which can give a polymer stretchable and rich in restoring force.This is a compound expressed by general formula (1) in which R shows independently a hydrogen atom or a 1-4C lower alkyl group, and n...  
JP2006104166A
To provide a method of reducing a hydrolyzable chlorine in a crude diphenylmethane diisocyanate up to 0.03% or lower in a short time.The problem is solved by the method of purifying the crude diphenylmethane diisocyanate characterised in...  
JP2006510693A  
JP2006510712A  
JP2006510694A  
JP2006510696A  
JP2006510695A  
JP2006510692A  
JP2006069941A
To provide a method for decomposing isocyanate-based compounds and a method for recovering the decomposed materials in order to solve problems in which a mixture of isocyanate-based compounds has no utility value and the mixture has been...  
JP2006057073A
To provide a method for producing a methylene-crosslinked polyphenylene polyisocyanate with simply and effectively suppressing discoloration of the same.The method is to react a polyamine mixture generated by condensation reaction of ani...  
JP2006036778A
To provide a multi-process method for continuously producing an alicyclic diisocyanate in a state free from phosgene.This multi-process method for continuously producing the alicyclic diisocyanate is characterized by performing the forma...  
JP2006503785A  
JP2006028037A
To provide a non-yellowing novel blocked alicyclic polyisocyanate compound and an alicyclic polyisocyanate compound which can be utilized as polyurethane raw materials for elastomers, coating materials, adhesives and the like.The blocked...  
JP2006503007A  
JP2006022098A
To provide a method capable of setting a desired reaction temperature by minimum expense concerning a production apparatus and avoiding undesirable formation of precipitate and a secondary product in a reactor in the method for producing...  
JP2006022100A
To provide a method for simply and economically producing a polyamine of a diphenylmethane series in which an acid catalyst can be utilized in a degree of protonation of <15% without separating a reaction mixture into a two phase system....  
JP3734827B2  
JP2006002153A
To provide an improved process for production of carbodiimide-modified organic isocyanate, preferably a polymethylenepolyphenyl isocyanate, and most preferably diphenylmethane diisocyanate.This process comprises (1) neutralizing acidic i...  
JP2006500425A  
JP2005336190A
To provide an improved method for the continuous multi-process production of an alicyclic diisocyanate not containing phosgene.This method for the continuous multi-process production of the alicyclic diisocyanate, comprising reacting an ...  
JP2005320334A
To provide an improved multiple process method for continuously producing an alicyclic diisocyanate.In the multiple process method for continuously producing an alicyclic diisocyanate by reacting an alicyclic amine with a carbonic acid d...  
JP2005298365A
To provide an organic polyisocyanate composition which effectively prevents discoloration, more specifically an organic polyisocyanate composition which effectively inhibits discoloration even with time and at elevated temperatures.The o...  
JP2005531578A  

Matches 701 - 750 out of 1,647