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Patent Searching and Data


Matches 701 - 750 out of 873

Document Document Title
JPH05214239A
PURPOSE: To provide a method for preparing a blocked polyisocyanate without requiring a considerable amt. of a solvent or elevated temp. for dispersing a polyisocyanate into water. CONSTITUTION: A method for preparation of an aqueous dis...  
JPH05214313A
PURPOSE: To produce the adhesive comprising a polyurethane composition prepared substantially without employing phosgene at any step of a process for producing a starting raw material. CONSTITUTION: The adhesive comprises a polyurethane ...  
JPH05194355A
PURPOSE: To provide compounds containing trans, trans isomer of 4-4'- diisocyanato dicyclohexylmethane. CONSTITUTION: At least 90%, preferably 95 to 99% of trans, trans isomer is contained in 4,4'-isocyanato dicyclohexylmethane thereby m...  
JPH05194352A
PURPOSE: To provide a reactor for thermal cleavage decomposition of carbamates in a liquid phase into the corresponding isocyanates and hydroxyl components. CONSTITUTION: This reactor is used for the thermal cleavage decomposition of mon...  
JPH05194353A
PURPOSE: To obtain an org. polyisocyanate having rather low hydrolytic chlorine content by purification at rather low temp. CONSTITUTION: An org. polyisocyanate is purified by mixing with a compd. containing trimethylsilyl groups express...  
JPH05194351A
PURPOSE: To obtain the subject apparatus for continuously producing an isocyanate compound by thermally decomposing a carbamic acid ester compound at the boiling point of an inert solvent and the subject method therefor. CONSTITUTION: Me...  
JPH05194354A
PURPOSE: To obtain isocyanate ingredients by mixing distillation residues obtained in the production of tolylene diisocyanate with polyisocyanates, heating and distilling the mixture. CONSTITUTION: Distillation residues obtained in the p...  
JPH05186414A
PURPOSE: To obtain isocyanates stably for a long time in easy separation of a catalyst from the product, high space time yield and high selectivity when carbamic acid esters are thermally decomposed to produce isocyanates. CONSTITUTION: ...  
JPH05186415A
PURPOSE: To obtain isocyanates stably for a long time in easy separation of a catalyst from the product, high space time yield, high selectivity when carbamic acid esters are thermally decomposed to produce isocyanates. CONSTITUTION: A m...  
JPH05178812A
PURPOSE: To obtain the subject isocyanate by partially carbodiimidizing the isocyanate group of an org. isocyanate by using a catalyst of a phospholine type, then adding a specific silylated acid thereto to stop the carbodiimidization re...  
JPH05178811A
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...  
JPH05163230A
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...  
JPH05163231A
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...  
JPH05148216A
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...  
JPH05148217A
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...  
JPH05140073A
PURPOSE: To efficiently obtain ╬▓-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...  
JPH05140074A
PURPOSE: To efficiently obtain a ╬▓halogeno-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...  
JPH05117220A
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...  
JPH0597790A
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...  
JPH0578304A
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...  
JPH0565263A
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...  
JPH0565265A
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...  
JPH0565264A
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...  
JPH0558982A
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...  
JPH0558983A
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 ...  
JPH0543525A
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...  
JPH0532607A
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...  
JPH0532608A
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...  
JPH059166A
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...  
JPH051014A
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...  
JPH051016A
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...  
JPH051017A
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...  
JPH04281830A
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...  
JPH04275269A
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...  
JPH04253952A
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...  
JPH04253951A
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...  
JPH04235155A
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...  
JPH04235156A
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...  
JPH04230354A
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...  
JPH04221356A
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...  
JPH04221357A
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...  
JPH04211641A
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...  
JPH04210950A
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...  
JPH04159259A
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...  
JPH04145059A
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...  
JPH0489465A
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...  
JPH0426666A
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...  
JPH0426665A
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...  
JPH0418415A
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...  
JPH049362A
PURPOSE: To obtain the subject compound in high yield with decreased number of steps using an easily controllable low-temperature solution reaction by using ╬▒-(aminophenyl)ethanol as a starting raw material and reacting with phosgene in...  

Matches 701 - 750 out of 873