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Matches 601 - 650 out of 865

Document Document Title
JP08225510A
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...  
JP08176091A
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. ...  
JP08104755A
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...  
JP08099946A
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...  
JP2512660B
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...  
JP08089702A
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...  
JP08067662A
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 ...  
JP08059592A
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...  
JP08059593A
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) ...  
JP07316123A
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 ...  
JP07316122A
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...  
JP07309926A
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...  
JP07309828A
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...  
JP07309827A
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...  
JP07291917A
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. ...  
JP07285925A
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...  
JP07278087A
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...  
JP07278088A
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-...  
JP07278089A
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...  
JP07258194A
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...  
JP07258195A
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...  
JP07252200A
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...  
JP07252241A
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...  
JP07233137A
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...  
JP07233136A
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...  
JP07216051A
PURPOSE: To provide a new masked polyisocyanate which has isocyanate groups masked specifically, is excellent in storage stability, safeness to human bodies, lowering the reaction temp., etc., gives polymers and crosslinked articles exce...  
JP07196594A
PURPOSE: To provide a method for producing a high purity (cyclic) aliphatic diurethane especially suitable for producing a (cyclic) aliphatic diisocyanate by the thermal cleavage of a urethane and method for producing the diisocyanate by...  
JP07165696A
PURPOSE: To provide a production method simplified in process, capable of reducing utility cost and, simultaneously, capable of obtaining bis(isocyanatomethyl)cyclohexane in high selectivity and high space time yield. CONSTITUTION: One m...  
JP07149705A
PURPOSE: To stabilize in a suitable method an aliphatic (alicyclic) polyisocyanate obtained by a phosgene-free reaction without exerting an adverse effect on the reactivity of the polyisocyanate. CONSTITUTION: There is provided a stable ...  
JP07145134A
PURPOSE: To improve reactivity of xylenolic acid whose reactivity with a diphenylmethane diisocyanate is low with the diphenylmethane diisocyanate. CONSTITUTION: In producing a blocked isocyanate by adding a toluene diisocyanate or a dip...  
JP07138222A
PURPOSE: To produce isocyanate substd. isophthaloyl chloride useful in the production of a multilayered reverse osmosis membrane having surprisingly increased solute rejection and permeation properties. CONSTITUTION: A mixture of amino s...  
JP07101926A
PURPOSE: To provide a new aromatic diisocyanate having low toxicity owing to extremely low vapor pressure at normal temperature, exhibiting high stability and useful as a raw material for heat-sensitive recording material, a raw material...  
JP07089921A
PURPOSE: To provide a novel acid halide compound useful for producing a 2-alkyl-2-propenoyl isocyanate useful as an intermediate for organic syhtheses, medicines and agrochemicals, and as a starting raw material for reactive polymer mate...  
JP07082230A
PURPOSE: To provide a producing method not only producing a MDI-based polyisocyanate which is not colored or remarkably reduced in coloring, but simultaneously capable of also preventing coloring during storage. CONSTITUTION: In producin...  
JP07070581A
PURPOSE: To obtain a fuel composition which can prevent or reduce the formation of deposits on a suction valve and promotes the cleanability of the whole suction system by incorporating a specified aromatic compound and to obtain a lubri...  
JP07053498A
PURPOSE: To obtain the subject compound in high efficiency using an industrially available xylylene dicyanide as raw material. CONSTITUTION: Xylylene dicyanide is catalytically reduced into N,N '-(phenylenebisethylene)bisamine, which is,...  
JP07002754A
PURPOSE: To prepare an organic isocyanate in high yield by thermally decomposing the corresponding carbamate in multiple steps and removing the alcohol produced by the thermal decomposition in the intermediate step of the steps by the st...  
JP07002755A
PURPOSE: To obtain isocyanates useful as binders for one-component coating compositions which may be cured at a room temperature. CONSTITUTION: A process for the preparation of olefinically unsaturated isocianates comprises reacting (a1)...  
JP07002753A
PURPOSE: To obtain a half-blocked diisocyanate composition not containing substantially unreacted organic diisocyanate compound, containing hard any di-blocked diisocyanate compound. CONSTITUTION: The method for producing half-blocked di...  
JP06345707A
PURPOSE: To obtain a method for reducing hydrolyzable chlorine in an organic isocyanate compound. CONSTITUTION: An inert gas is passed through a liquid organic isocyanate compound under conditions of 80-150°C temperature and 0.1-100mmHg...  
JP06340605A
PURPOSE: To provide new anilines, isocyanates, carboxylic acid azides useful as intermediates for preparation of new bezoyl ureas having pesticidal effect. CONSTITUTION: An aniline of formula I (wherein R1 is Br or I), for example, 4-bro...  
JP06336469A
PURPOSE: To recover pure isocyanate and a pourable, non-dusting, granular material. CONSTITUTION: Pure isocyanate is recovered from an isocyanate-contg. residue of a phosgene/amine reaction mixture by continuously feeding such residue an...  
JP06312969A
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...  
JP06287269A
PURPOSE: To obtain the subject composition useful as a coating compound for bodies of automobile, etc., having excellent lowtemperature curing properties and thermal yellowing resistance by sealing a specific polyisocyanate with a blocki...  
JP06287170A
PURPOSE: To prevent the aggregation of impurities contained in diphenylmethane diisocyanate useful for the production of polyurethane and improve the storage stability of the compound by feeding the compound in a container in a state whe...  
JP06279390A
PURPOSE: To obtain a novel compound useful as a curing agent for a epoxy resin, a polyurethane or a polyurea and a raw material for a polyamide, a polyimide and a polyimide-amide, producible in a high purity and high yield. CONSTITUTION:...  
JP06263712A
PURPOSE: To produce an isocyanate group-containing ester widely useful as an industrial resin including a coating resin at a low reactional temperature by using a reactional material with hardly any adverse effects on humans or the envir...  
JP06239826A
PURPOSE: To advantageously produce 1,6-hexamethylene diisocyanate in catalyst activity and selectivity without causing deactivation of the catalyst. CONSTITUTION: This method for producing 1,6-hexamethylene diisocyanate is characterized ...  
JP06234722A
PURPOSE: To provide a new production method for 2,6,2'-triisocyanatoethyl hexanoate in a shorter time and in higher yield compared with the conventional method. CONSTITUTION: 2,6,2'-Triisocyanatoethyl hexanoate is produced by reacting 2,...  
JP06234723A
PURPOSE: To provide a new production method for 2,6,2'-triisocyanatoethyl hexanoate in a shorter time compared with the conventional method. CONSTITUTION: 2,6,2'-Triisocyanatoethyl hexanoate is produced by reacting 2,6,2'-triaminoethyl h...  

Matches 601 - 650 out of 865