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Matches 601 - 650 out of 855

Document Document Title
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...  
JP07216051
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...  
JP07196594
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...  
JP07165696
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...  
JP07149705
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 ...  
JP07145134
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...  
JP07138222
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...  
JP07101926
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...  
JP07089921
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...  
JP07082230
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...  
JP07070581
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...  
JP07053498
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,...  
JP07002754
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...  
JP07002755
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)...  
JP07002753
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...  
JP06345707
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...  
JP06340605
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...  
JP06336469
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...  
JP06312969
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...  
JP06287269
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...  
JP06287170
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...  
JP06279390
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:...  
JP06263712
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...  
JP06239826
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 ...  
JP06234722
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,...  
JP06234723
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...  
JP06234724
PURPOSE: To continuously produce a methylene bridged polyphenylene polyisocyanate excellent in hue besides having the low content of an acid and a decomposable chlorine. CONSTITUTION: The methylene bridged polyphenylene polyisocyanate is...  
JP06228149
PURPOSE: To provide a novel compound useful as an intermediate for synthesizing agrichemicals, medicines, functional materials, and organic chemicals. CONSTITUTION: The compound of formula I (R1 is H, alkyl, alkoxycarbonylalkyl, etc.; R2...  
JP06211771
PURPOSE: To obtain new blocked org. polyisocyanate usable in the production of a baking lacquer whose max. baking temp. is 140°C and capable of producing a soln. having storage stability when dissolved in a known lacquer solvent. CONSTI...  
JP06192205
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...  
JP06192204
PURPOSE: To produce a polyisocyanate in high yield and selectivity by thermally decomposing a polycarbamic acid ester so as to stably enable the operation for a long period with extremely rare sticking of a polymer to a reactor. CONSTITU...  
JP06184083
PURPOSE: To effectively protect the coloring of diphenylmethane diisocyanates useful as raw materials of polyurethane resins, synthetic leather substitutes, etc., by adding a specific amount of a specific hindered amine to the diphenylme...  
JP06172292
PURPOSE: To provide a process for producing a diisocyanate compound without using phosgene during the production processes. CONSTITUTION: The production process comprise the steps of reacting carbon monoxide, oxygen and methanol with eac...  
JP06157450
PURPOSE: To provide an isocyanate-based crosslinking agent composed of a blocked polyisocyanate blocked by using a fluorinated alcohol having a specific carbon chain length as a masking agent, having low regeneration temperature and free...  
JP06157449
PURPOSE: To prepare isocyanate useful for intermediates of plastics, lacquers and plant protective agents in a simply, a high purity and a high yield process by decomposing N,N,N'-trisubstituted ureas. CONSTITUTION: The process comprises...  
JP06157448
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...  

Matches 601 - 650 out of 855