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Matches 701 - 750 out of 863

Document Document Title
JP05178811
PURPOSE: To stably preserve and transport xylylene diisocyanate while suppressing formation of polymer and preventing white cloudiness by checking an amount of oxygen in xylylene diisocyanate in a fixed allowable region. CONSTITUTION: In...  
JP05163230
PURPOSE: To obtain new amino- and ammonium-isocyanates useful as starting substances for cationic polymers contg. quat. ammonium group such as cationic polysaccharides that are raw materials of coagulants for paper, medical filters, cosm...  
JP05163231
PURPOSE: To obtain the subject compound minimized in the content of hydrolyzable chlorine by using a thin-film type evaporator having a condenser on the outside of the first and/or third distillation steps in distilling operation compose...  
JP05148216
PURPOSE: To obtain the subject compound in high space-time yield and high selectivity by thermally decomposing an alicyclic biscarbamic acid ester using a reactive vacuum distillation process in the presence of a specific inert solvent a...  
JP05148217
PURPOSE: To easily and efficiently produce the subject compd. by allowing amines corresponding to the diphenyl methane series to react with a proper excess amt. of dialkyl carbonates in the presence of a catalyst and only cooling the pro...  
JP05140073
PURPOSE: To efficiently obtain β-halogeno-tert.-alkyl isocyanates useful as intermediates of rubber additives, herbicides, etc., by allowing specified tert.- alkyl isocyanates to react with gaseous hydrogen chloride, chlorinating the re...  
JP05140074
PURPOSE: To efficiently obtain a βhalogeno-tert.alkyl isocyanate useful as an intermediate of a rubber additive, a herbicide, etc., by allowing a specified tert.-alkyl isocyanate to react with chlorine as a simple substance. CONSTITUTIO...  
JP05117220
PURPOSE: To condition and purify an org. isocyanate so that the isocyanate is made free from variation in its reactivity and excellent in quality by mixing the isocyanate with a specified silylated acid and carrying out treatment under s...  
JP05097790
PURPOSE: To obtain the subject compd. having fungicidal activity against a wide variety of diseases of plants, especially diseases caused by fungi. CONSTITUTION: This compd. is expressed by formula I, wherein A, B are H, F, Cl, 1 to 4C a...  
JP05078304
PURPOSE: To obtain a stabilized isocyanate composition by simultaneously suppressing yellowing property and white turbidity over a long period to stabilize an isocyanate compound. CONSTITUTION: Phenol of 10-5000ppm, especially 100-200ppm...  
JP05065263
PURPOSE: To produce an isocyanate compound economically and efficiently without using poisonous phosgene by using a formamide compound or an amine compound as main raw materials. CONSTITUTION: A formamide compound is reacted with dimethy...  
JP05065265
PURPOSE: To obtain the title compound by reacting an isophoronediamine with phosgene, distilling a reaction mixture and heat-treating to reduce the amount of hydrolyzable chlorine and acidity of the mixture. CONSTITUTION: Isophoronediami...  
JP05065264
PURPOSE: To prevent coloring of an aromatic compound with air, light rays, heat, etc., by blending an aromatic isocyanate compound with a specific organic phosphoric ester, BH and TPP. CONSTITUTION: An aromatic isocyanate compound is ble...  
JP05058982
PURPOSE: To simply and efficiently remove a hydrolyzable chlorine compound in an organic isocyanate which is hardly removed according to a conventional method. CONSTITUTION: The subject method is to purify an organic isocyanate character...  
JP05058983
PURPOSE: To easily obtain tert. aralkyl isocyanates by a simple method using noncorrosive low-cost starting materials by heating specified urethanes so that alkanols are liberated and isocyanates are produced. CONSTITUTION: Urethanes of ...  
JP05043525
PURPOSE: To provide a new diphenyl carbonate derivative useful as an intermediate easily convertible to an oxazolinedione derivative having high herbicidal activity. CONSTITUTION: The diphenyl carbonate derivative of formula I [R is amin...  
JP05032607
PURPOSE: To readily produce a haloalkanoyl isocyanate having various uses as an industrial raw material for production by reacting acrylamide with an oxalyl halide, especially oxalyl chloride. CONSTITUTION: An acrylamide (e.g. methacryla...  
JP05032608
PURPOSE: To readily produce an isocyanate compound useful as a raw material or an intermediate, etc., for producing medicines, agricultural chemicals, dyes, etc., by reacting a haloalkanoyl isocyanate with a dehydrohalogenating agent. CO...  
JP05009166
PURPOSE: To obtain an isocyanate in high yield and in high selectivity without precipitation of an insoluble polymer by thermally decomposing a urethane in the presence of a carbamic ester. CONSTITUTION: A urethane is thermally decompose...  
JP05001014
PURPOSE: To provide a method for reducing a hydrolyzable chloride in toluene diisocyanate(TDI) and more particularly in TDI distillation bottoms and to obtain a polymer produced by using the reduced hydrolyzable chloride bottoms. CONSTIT...  
JP05001016
PURPOSE: To obtain a polymethylenepolyphenylcarbamate having no cyclic structural unit in high purity and yield by subjecting a compound having a specific cyclic structure to ring-opening condensation reaction using an acid catalyst. CON...  
JP05001017
PURPOSE: To obtain the subject compound having no cyclic structural unit in high purity and yield by subjecting a compound having a specific cyclic structure to ring-opening condensation reaction using an acid catalyst without adding a m...  
JP04281830
PURPOSE: To obtain a reverse osmosis membrane comprising separating layers of polyamide urea exerting an improved solute rejection as well as solvent flux by allowing a microporous organic polymer substrate to be impregnated with a water...  
JP04275269
PURPOSE: To selectively obtain isocyanate at a high yield by treating a liquid mixture composed of unchanged urethane and isocyanate while expelling alcohol of a by-product without using catalysts in this mixture, thereby decomposing the...  
JP04253952
PURPOSE: To lessen the coloration of crude MDI by giving up the addition of water in a conventional method. CONSTITUTION: This process consists in producing the mixture having the decreased iodine color number from diphenylmethane-diisoc...  
JP04253951
PURPOSE: To operate a reactor with an extremely small amount of polymer attached to the reactor in high yield and in high selectivity stably for a long period of time in manufacturing an isocyanate by thermally decomposing a carbamic aci...  
JP04235155
PURPOSE: To enable to readily separate a high boiling point solvent from a mixture of the high boiling point solvent and high boiling point products (high boiler) by-produced in the reaction, when an urethane compound is subjected to a t...  
JP04235156
PURPOSE: To provide a process for producing 4,4'-diisocyanato dicyclohexylmethane contg. at least 90 wt.% trans, trans-isomer. CONSTITUTION: (a) A mixture composed of the 4,4'-diisocyanato dicyclohexylmethane contg. at least 30 wt.% tran...  
JP04230354
PURPOSE: To obtain a new odorless aromatic diisocyanatoindane derivative, usable as a raw material for polyurethane resins 6r polyurea resins in various fields such as foams, elastomers, synthetic leathers, adhesives and films with hardl...  
JP04221356
PURPOSE: To efficiently produce xylylene diisocyanate by pyrolysis of an urethane compound which is a phenylene bis(methylene)-biscarbamic acid ester. CONSTITUTION: Reaction distillation from the resultant xylylene diisocyanate is carrie...  
JP04221357
PURPOSE: To provide new pentane-diisocyanate in which the physical properties and the working properties thereof are alternatable by properly selecting substituents and which can effectively be used as a material for preparing polyisocya...  
JP04211641
PURPOSE: To inhibit corrosion of apparatus by a mixture containing chlorine, hydrogen chloride and phosgene formed upon addition of water and to match the iodine color number of crude MDI to a level achievable by the addition of water or...  
JP04210950
PURPOSE: To provide a simple method of preparing 4,4'-diisocyanato dicyclohexylmethane containing at least 90 wt.% of trans,trans-isomer. CONSTITUTION: (a) An isomer mixture of 4,4'-diisocyanato dicyclohexylmethane containing at least 30...  
JP04159259
PURPOSE: To obtain highly reactive poly-MDI and high-purity 4,4'-MDI simultaneously by separating the product obtained by reaction of a polyamine with phosgene into a MDI isomer mixture and poly-MDI through distillation and by further se...  
JP04145059
PURPOSE: To industrially advantageously produce the subject compound by reacting an aromatic amine compound with an excessive amount of phosgene in an inert solvent by two steps under specific conditions to reduce the contents of acids a...  
JP04089465
PURPOSE: To easily obtain the subject compound on an industrial scale under low reaction pressure in a state to enable easy separation and recovery of catalyst without causing the corrosion problem of the apparatus by reacting an aromati...  
JP04026666
PURPOSE: To prepare the subject composition having excellent color tone and transparency by specifying an oxygen concentration and a reaction temperature in the gas phase of a reaction tank with charging an inert gas when diphenylmethane...  
JP04026665
PURPOSE: To profitably an isocyanate by circulating a liquid component to a reaction section for thermally decomposing the subject compound into the isocyanate and an organic hydroxy compound in a liquid phase and to an evaporation secti...  
JP04018415
PURPOSE: To provide the subject compsn. composed of a reaction product of a specific ratio of an org. isocyanate and methylpropanediol and crystalline at room temp. and excellent in storage stability. CONSTITUTION: An org. isocyanate (pr...  
JP04009362
PURPOSE: To obtain the subject compound in high yield with decreased number of steps using an easily controllable low-temperature solution reaction by using α-(aminophenyl)ethanol as a starting raw material and reacting with phosgene in...  
JP03287570
PURPOSE: To obtain the subject composition, consisting essentially of a diisocyanate compound containing a protonic acid, effective in synthesizing polyurethane resins useful as coatings, cushioning materials, etc., and capable of activa...  
JP03275661
PURPOSE: To promote the urethanization reaction by adding a protonic acid to a diisocyanate compound obtained by the reaction of a diamine with dimethyl carbonate produced essentially without using phosgene in the reaction process. CONST...  
JP03220167
PURPOSE: To obtain the subject compound in high selectivity and high yield by continuously reacting an alicyclic-aliphatic diamine as a starting raw material with hydrogen chloride using a common specific inert solvent and then reacting ...  
JP03218344
NEW MATERIAL: A polyisocyanate containing ester groups and having a content of aliphatically bound isocyanate groups of 18-33 wt.%, an average NCO functionality of 1 to 10 and a viscosity of 200 to 2500 mPa.s at 22°C. USE: An isocyanate...  
JP03204851
PURPOSE: To obtain the subject compounds containing only a very low quantity of impurities and useful as a raw material of polyurethane-based materials, etc., with a high volumetric efficiency by using a specified solvent in a reaction b...  
JP03200756
PURPOSE: To obtain the title compound useful as a raw material for polyurethane, polyurea, etc., in high yield by preparing a urethane compound from formamide compound and dimethyl carbonate as starting raw materials and thermally decomp...  
JP03173859
PURPOSE: To obtain the subject compound which is useful for the preparation of polyurethane by reacting aromatic amines with isocyanic acid and dialkylamine in turn and thermal-decomposing the obtained aromatic dialkyl urea in the presen...  
JP03133949
PURPOSE: To obtain 1,8-menthane diisocyanate having extremely low chlorinated impurities in high volume-efficiency by using an ester as a reaction solvent in the reaction of 1,8-menthanediamine or its hydrochloride with phosgene. CONSTIT...  
JP03115258
PURPOSE: To obtain the subject compd. with a high vol./time yield while reducing by-products to a min., by separating a product obtd. by thermally cleaving a carbamic acid ester with a two-stage dephlegmator. CONSTITUTION: A gaseous prod...  
JP03106829
PURPOSE: To provide efficiently the subject compound useful as intermediates for various chemicals, by dehydrogenating a corresponding halogen-substituted cyclohexene or cyclohexadiene with a brominating agent at a specific temperature i...  

Matches 701 - 750 out of 863