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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 ...
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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...
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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...
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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...
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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...
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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...
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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...
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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,...
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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...
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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)...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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:...
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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...
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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 ...
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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,...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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JP06145132 |
PURPOSE: To obtain a method for producing an aliphatic isocyanate in which an unreacted aliphatic urethane can efficiently be separated and recovered from a liquid drawn out of a reactor; the yield of the isocyanate can be improved; the ...
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JP06116227 |
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...
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JP06092925 |
PURPOSE: To provide nucleus-substituted 4-hydroxyphenyl propionic acid compounds useful as a stabilizer for organic polyisocyanates, particularly for preventing discoloration in high temperature storage. CONSTITUTION: The stabilizer of o...
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JP06087815 |
PURPOSE: To remarkably reduce color of the polyisocyanates by adding relatively small amount of reducing agent to the corresponding polyamines. CONSTITUTION: The present invention is directed to a process for the production of polymethyl...
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JP06087814 |
PURPOSE: To obtain α-(3-isocyanatophenyl)ethyl isocyanate in a high purity and in a high yield, while preventing the generation of by-products, by reacting α-(3-aminophenyl)ethylamine hydrochloride with phosgene in an acetic acid ester...
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JP06080750 |
PURPOSE: To impart catalysis to accelerate trimerization of isocyanate and/or reaction of it with an active hydrogen-containing compound by using 3- quinuclidinol derivative as the catalyst composition. CONSTITUTION: In imparting catalys...
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JP06072982 |
PURPOSE: To prepare high purity alkyl mono- and diisocyanates from amine and dimethylcarbonate without using toxic materials as a raw material. CONSTITUTION: These alkyl mono- and diisocyanates of formula R-(NCO)x [x is 1 or 2; R is ≤1...
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JP06065184 |
PURPOSE: To obtain a stable composition useful as a raw material for polyurethane foaming plastics, which is prepared safely and inexpensively by adding a specific epoxide, a specific silylating agent and a specific alkylating agent to a...
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JP06056755 |
PURPOSE: To obtain a uretdione group-contg. polyisocyanate with high selectivity in a high yield by dimerizing a monomeric isocyanate in the presence of a specified polymeric compd. as a catalyst. CONSTITUTION: A polymeric compd. having ...
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JP06049016 |
PURPOSE: To continuously produce an isocyanate compound by thermally decomposing a carbamic ester at the boiling point of an inert solvent. CONSTITUTION: A device for production is equipped with means 22 and 23 which return an isocyanate...
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JP06041044 |
PURPOSE: To obtain a methylene-cross-liked polyphenylene polyisocyanate excellent in hue by irradiating a colored methylene-cross-linked polyphenylene polysiocyanate with light of a specific wavelength and decoloring the methylene- cross...
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JP06041272 |
PURPOSE: To improve compatibility with alkane-based blowing agents and to improve a bubble fraction, etc., by using a specific modified aromatic polyisocyanate as an isocyanate component in manufacturing polyurethane-based rigid foam mat...
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JP06041045 |
PURPOSE: To provide an improved multistage method continuously producing (cyclo)aliphatic diisocyanate in a state in which phosgene is not contained. CONSTITUTION: A mixture of diamine 1, urea 2 and alcohol 3 is fed onto a plate which po...
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JP06041046 |
PURPOSE: To provide a method for producing diisocyanate in a high yield in which phosgen is reacted with amine in the gas phase. CONSTITUTION: This is a method for continuously producing aromatic diisocyanate by the phosgenation of the c...
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JP06041025 |
PURPOSE: To produce a high quality isocyanate from which a pale color polyurethane foamed material can be obtd. CONSTITUTION: In the production method of a polyamine of diphenylmethane series includes condensation of aniline and formalde...
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JP06025381 |
PURPOSE: To obtain a polyisocyanate composition having extremely excellent low-temperature storage stability by adding a specific amount of a non-reactive silicone oil to a polyisocyanate compound containing a modified diphenylmethane di...
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JP06025136 |
PURPOSE: To continuously prepare distillable org. polyisocyanates, preferably aliphatic or alicyclic diisocyanates, in a high selectivity and a high space time yield by an economical and simple method without using expensive starting mat...
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JP06025382 |
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...
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