| Document |
Document Title |
|
JP2679557 |
PURPOSE: To obtain a production capable of manufacturing methyl isocyanate by a more simplified process in a higher yield than that of a conventional process, having a great economic effect. CONSTITUTION: In a method wherein methylcarbam...
|
|
JP09143141 |
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...
|
|
JP09143140 |
To realize simple and efficient production of isocyanate in a shortened time by treating an acetoacetic anilide derivative having an azo group of an azo compound linked thereto. An acetoacetic anilide derivative to which an azo group of ...
|
|
JP09110817 |
To obtain acyl isocyanate as a useful intermediate of synthesizing of urea, etc., by a new method using oxalyl chloride in avoiding generation of by-product, hydrochloric acid which has been a problem in a usual method. The objective acy...
|
|
JP09100263 |
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...
|
|
JP09087239 |
To obtain an isocyanate useful as a raw material for paints in high yield and selectivity with side reactions suppressed. In the presence of a catalyst such as triphenyltin acetate, a carbamate such as 1,4-bit(methoxycarbonylamino)butane...
|
|
JP2619798 |
PURPOSE: To provide the method for preparing aromatic compds. substd. by at least two isocyanate groups. CONSTITUTION: This method is characterized that at least one kind of compd. (A) bearing at least two prim. amine functional groups a...
|
|
JP09059244 |
To obtain a composition, raised in reactivity of a diisocyanate compound and useful for synthesizing a polyurethane resin by adding a tertiary amine to the diisocyanate compound substantially without containing a halogen. (B) A tertiary ...
|
|
JP09052874 |
To industrially obtain the subject high-purity compound y simultaneous ly distilling out an organic solvent and p-phenylene diisocyanate obtained by cold two-stage phosgenation process under reduced pressures followed by concen trating t...
|
|
JP09052873 |
To economically obtain a toluylene diisocyanate by a specific means so as to make a toluylenediamine as intermediate capable of being stored or transported by an ordinary tanker in the form of a mixture with water without any problem of ...
|
|
JP09020743 |
To obtain a high-quality organic isocyanate compound by adding a specific three component-based discoloration inhibitor to the compound, useful as a raw material for an elastic material, a foam, an adhesive, etc., while effec tively prev...
|
|
JP09020744 |
To obtain a high-quality organic isocyanate compound by adding a specific three component-based discoloration inhibitor to the compound, useful as a raw material for an elastic material, a foam, an adhesive, etc., while effectively preve...
|
|
JP09012525 |
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-...
|
|
JP2596650 |
PURPOSE: To obtain a high-purity isocyanate compound by easily separating and purifying it from a mixed solution in high yield under energy saving. CONSTITUTION: The objective isocyanate compound can be obtained by crystallization and se...
|
|
JP08291129 |
PURPOSE: To obtain an organic isocyanate significantly reduced in discoloration by bleaching a discolored organic isocyanate with an ozone-contg. gas. CONSTITUTION: (A) A discolored organic isocyanate, pref. crude one, bottom one or modi...
|
|
JP08291114 |
To perform the fractionation and purification of an aromatic polyamine mixture by a simple means so as to afford the corresponding isomers in a pure or concentrated form. The fractionation and purification of a diphenylmethane-based poly...
|
|
JP08291113 |
To perform the fractionation and purification of an aromatic polyamine mixture (in particular, of diphenylmethane base) to obtain the corresponding isomers in high purity or concentration. The fractionation and purification of an aromati...
|
|
JP08283211 |
To economically and advantageously fractionate and purify the subject mixture with a good separation efficiency under mild conditions by recycling and extracting the aromatic polyamine mixture in the multi-stage extraction in a two-phase...
|
|
JP08283213 |
To readily fractionate and separate the subject mixture with a god separation efficiency by extracting an aromatic polyamine mixture with a two-phase system comprising a specific solvent phase and an aqueous phase according to the counte...
|
|
JP08283210 |
To readily fractionate and purify the subject mixture and produce isomers in the pure form or in the enriched form with a good separation efficiency by recycling and extracting the aromatic polyamine mixture in the multi-stage extraction...
|
|
JP08283214 |
To readily fractionate and separate the subject mixture with a good separation efficiency by extracting an aromatic polyamine mixture with a two-phase system comprising a specific solvent phase and an aqueous phase according to the count...
|
|
JP08283215 |
To provide a method for fractionating and purifying an aromatic polyamine mixture, capable of especially facilitating the fractionation and purification of a diphenylmethane-based aromatic polyamine mixture and obtaining isomers thereof ...
|
|
JP08283212 |
To readily fractionate and purify the subject mixture and produce isomers in the pure form and in the enriched form with a good separation efficiency by recycling and extracting the aromatic polyamine mixture in the multi-stage extractio...
|
|
JP08231490 |
To safely purify carbonyl chloride without liquefaction and highly profitably phosgenate by purifying contaminated carbon monoxide by adsorption in a solvent and using the obtained carbonyl chloride solution. This method of phosgenation ...
|
|
JP08225509 |
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...
|
|
JP08225510 |
To obtain the subject isocyanate continuously and in a high yield by circulating a reaction mixture of a specific amine and phosgene through a bubbling column in an organic solvent. This method for preparing an organic isocyanate is prov...
|
|
JP08176091 |
PURPOSE: To obtain the subject compound little in byproducts and capable of being easily isolated in a high yield by heating a specific acylcarbamate compound in the presence of a basic substance and an acid halide at a low temperature. ...
|
|
JP08104755 |
PURPOSE: To obtain an isocyanatosilicon compd. useful as a material for synthesizing, e.g. a long-chain polysiloxane having only one NCO group in the molecule by selecting a specific isocyanatosilicon compd. CONSTITUTION: An isocyanatosi...
|
|
JP08099946 |
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...
|
|
JP2512660 |
PURPOSE: To obtain a polyisocyanate composition having extremely excellent low-temperature storage stability and useful for the production of a urethane resin product such as automobile bumper and shoe sole by adding a specific amount of...
|
|
JP08089702 |
To separate a solid residue from a soln. of the residue in a simple process by adding inert high-boiling poit hydrocarbons in a specified ratio in a stirred bed, heating the evaporable materials under vacuum to evaporate, drawing off and...
|
|
JP08067662 |
PURPOSE: To obtain a liquid diphenylmethane diisocyanate having sstabilized properties by adding a phosphorin-based catalyst and a phosphorous ester to diphenylmethane diisocyanate and carrying out the reaction. CONSTITUTION: The method ...
|
|
JP08059592 |
PURPOSE: To obtain the subject new compound having a combination of both the optical activity and physiological activity inherent in amino acid, and useful as a starting material for polymers having liquid crystal disposition, biocompati...
|
|
JP08059593 |
To safely obtain the subject compound in a high yield by carrying out phosgenation of an aromatic polyamine in a gaseous phase in the presence of phosgene which is excess by a specific ratio without using a large excess of phosgene. (A) ...
|
|
JP07316123 |
PURPOSE: To provide a process for producing the compound having freely controllable nucleus composition and utilizable for the production of polyurethane foam, elastomer, adhesive, coating, etc. CONSTITUTION: A mixture of isocyanates of ...
|
|
JP07316122 |
PURPOSE: To provide a process for the production of a methylene-crosslinked polyphenylene polyisocyanate having low acid and hydrolyzable chlorine contents and excellent hue. CONSTITUTION: A methylene-crosslinked polyphenylene polyisocya...
|
|
JP07309926 |
PURPOSE: To produce a polyisocyanate compd. which contains a uretedione group, has a low content of linear uretedione trimer and higher oligomers, a high isocyanate content, and a low viscosity, and is useful as a material for a curative...
|
|
JP07309828 |
PURPOSE: To obtain a new diisocyanate useful for producing a plastic containing urethane group or urea group and having a photostability and a weather resistance. CONSTITUTION: This new diisocyanate is a diisocyanate of formula I (R is H...
|
|
JP07309827 |
PURPOSE: To provide a process for producing an aliphatic polyisocyanate capable of reducing usage of phosgene, preventing tar formation, increasing yield and performing other improvements by introducing an inert gas into the reaction sys...
|
|
JP07291917 |
PURPOSE: To obtain acyl isocyanates of high purity in high yields without danger by reacting oxalyl chloride with a salt selected from hydrohalides and sulfates of a specific amide /or a carbamate and then, heating the reaction mixture. ...
|
|
JP07285925 |
PURPOSE: To isolate a trinuclear compound in a high yield and in a high purity, while reducing the by-production of tar, by subjecting a methylene-cross-linked polyphenylene polyisocyanate mixture to the combination of specific separatio...
|
|
JP07278087 |
PURPOSE: To provide a relatively simple method for producing an isocyanate or an isocyanate mixture which contains substantially no color causing substance in high yield, a method for manufacturing an isocyanate which contains substantia...
|
|
JP07278088 |
PURPOSE: To provide a method for purifying an aliphatic isocyanate, capable of remarkably reducing the contents of hydrolyzable chlorine and coloration- causing substances contained in the aliphatic isocyanate, and capable of giving non-...
|
|
JP07278089 |
PURPOSE: To produce a diisocyanate by gas-phase phosgenation of an aliphatic diamine having two primary amino groups in the 1,2- or 1,3-position to one another or of cycloaliphatic diamine having two primary amino groups in the 1,2- or 1...
|
|
JP07258194 |
PURPOSE: To produce an isocyanate useful as a raw material for a polyurethane, etc., in a high space time yield while improving the thermal decomposition rate and reducing formation of by-products by thermally decomposing a carbamic acid...
|
|
JP07258195 |
PURPOSE: To produce isophorone diisocyanate while preventing formation of aggregate, accordingly without causing a trouble related to operation by conducting phosgenation of isophorone diamine hydrochloride derived from isophorone diamin...
|
|
JP07252200 |
PURPOSE: To continuously obtain the subject compound at an improved phosgenation reaction rate and in an improved yield for the objective product by feeding isophorone diamine, hydrogen chloride and an inactive solvent into a reactor and...
|
|
JP07252241 |
PURPOSE: To obtain a new heterocyclic compound by reacting a (2-alkyl)acryloyl isocyanate with an azomethine-based compound and facilitate treatment of the (2-alkyl)acryloyl isocyanate by dissolving the new heterocyclic compound in a sol...
|
|
JP07233137 |
PURPOSE: To provide a method capable of easily and extremely stably producing an aliphatic polyisocyanate little in unreacted filtration cakes in high yield. CONSTITUTION: A method for producing an aliphatic polyisocyanate comprises simu...
|
|
JP07233136 |
PURPOSE: To provide a method capable of continuously producing a methylene- cross-linked polyphenylene polyisocyanate which is not only low in acid content and in hydrolyzable chlorine content but also excellent in color tone. CONSTITUTI...
|
