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Patent Searching and Data


Matches 651 - 700 out of 1,570

Document Document Title
JP2003183198
To provide a method for producing a dialkyl carbonate and a glycol, both of which are clean and free of metals or hazardous materials by an ester interchange reaction between an alkylene carbonate and an alcohol.In the method for simulta...  
JP2003171324
To provide a method for chemically recycling an aromatic polycarbonate, comprising subjecting a waste aromatic polycarbonate resin to an ester interchange reaction with an aromatic monohydroxy compound to recycle the products as an aroma...  
JP3442094
PURPOSE: To advantageously produce dialkyl carbonate without decreasing the activity of a catalyst by adding and allowing a halogeno acid to react with a reaction system consisting of CO, O2 and alcohol as the starting material and a cup...  
JP3437207
PURPOSE: To prepare efficiently organic carbonates by reacting an alcohol with carbon monoxide and oxygen in gas phase using a catalyst comprising oxides, salts or complexes of cobalt. CONSTITUTION: A symmetrical or asymmetric organic ca...  
JP2003155264
To provide a method for effectively carrying out a transesterification with saving required energy in producing an alkyl aryl carbonate by transesterifying a dialkyl carbonate with an aromatic hydroxy compound.This method for producing t...  
JP3422647
To chemically decompose a polycarbonate waste material and to recover bisphenol A of its raw material by transesterifying a polycarbonate(PC) with a lower alcohol by using an alkali as a catalyst, mixing the reaction system with a specif...  
JP2003119168
To provide a method for producing dimethyl carbonate, capable of giving such a structure of a reactor as the dimethyl carbonate is produced at a low cost, when the dimethyl carbonate is produced by transesterification of ethylene carbona...  
JP2003113144
To provide a method for producing an alkylaryl carbonate by which the alkylaryl carbonate is produced by an ester-interchange reaction of a dialkyl carbonate with phenols so as to be advantageous in both sides of a reaction rate and an e...  
JP2003113481
To provide a method for recovering an organic solvent from a waste liquid containing the organic solvent, supercritical carbon dioxide (CO2), and an etchant contaminants.In this method, the organic solvent is separated from the waste liq...  
JP3413612
PURPOSE: To continuously prepare diaryl carbonates or alkyl aryl carbonates from dialkyl carbonates and phenols using an ordinary transesterification catalyst by first allowing the starting material to react in a liquid phase in a counte...  
JP3413613
PURPOSE: To prepare diaryl carbonates continuously by reacting dialkyl carbonates with phenols in the mass-coupled and energy-coupled combination of a counter column and a reactive column. CONSTITUTION: The reaction is carried out in the...  
JP2003096027
To provide a method for producing a diaryl carbonate.The method for producing a diaryl carbonate entails reacting an aromatic hydroxy compound of formula (II): R-O-H (wherein, R is a 6-22C aromatic hydrocarbon) with CO and O2 in the pres...  
JP3412079
To prepare catalytic soln. for production of carbonic diester having high selectivity and low corrosiveness, to provide a method for regenerating the catalytic soln. and to produce carbonic diester with the catalytic soln. Alcohol is all...  
JP3409604
To produce a diaryl carbonate in a high selectivity over a long period by the decarbonylation reaction of a diaryl oxalate in the presence of an organic phosphonium salt while recovering and reusing the organic phosphonium salt. This pro...  
JP3409665
To obtain a dialkyl carbonate, which is useful as solvent and raw material for the production of medicine, agrochemical, urethane, polycarbonate, and so on, by decarbonylating a dialkyl oxalate in the presence of an alkali metal in gas p...  
JP3409603
To produce a diaryl carbonate in a high selectivity by the decarbonylation reaction of a diaryl oxalate in the presence of especially an organic phosphorus compound catalyst while keeping high activity and selectivity of the catalyst eve...  
JP2003081893
To provide a method for continuously and simultaneously producing a dialkyl carbonate and a glycol with low energy.This method for continuously and simultaneously producing the dialkyl carbonate and the glycol comprises conducting transe...  
JP2003073333
To provide a method with which a carbonic acid ester and an oxalic acid ester can be produced by reacting carbon monoxide with a nitrous acid ester in the absence of a catalyst (i.e., without using an expensive noble metal catalyst and w...  
JP3405417
PURPOSE: To obtain a compsn. containing ester exchange products in a substantially increased amt. and phenols in a reduced amt. CONSTITUTION: In this method, an arylcarbonate is continuously produced by contact ester exchange in a column...  
JP2003055306
To provide a method for producing a dialkyl carbonate by industrially advantageously transesterifying an alkylene carbonate with an alcohol. This method for dialkyl carbonate production is characterized in that the dialkyl carbonate is o...  
JP2003055308
To provide a method for inexpensively producing an aliphatic carbonate compound having biodegradability and yet an unsaturated bond and high functionality in high safety while controlling reduction of unsaturated bond amount. This method...  
JP2003055307
To provide a method for efficiently producing a dialkyl carbonate by efficiently industrially advantageously transesterifying an alkylene carbonate with an alcohol. This efficient method for dialkyl carbonate production is characterized ...  
JP2003040998
To provide a multibranched type polyalkylene oxide porogen and a low dielectric insulating film using it. The multibranched type polyalkylene oxide porogen is represented by formula (I): D-(Y-W)1 [wherein, W is a specific side chain and ...  
JP2003040839
To provide a method for producing a diaryl carbonate, by which the highly pure diphenyl carbonate is safely produced at a low cost in a state under a reduced phosgene content. This method for producing the diaryl carbonate by reacting ph...  
JP2003041049
To provide a recycling method for a polycarbonate resin, with which side reactions are suppressed and which has a slight adverse effect on the environment. The polycarbonate resin is mixed with an alcohol in a subcritical or supercritica...  
JP3385359
To provide a method of producing a carbonate in an industrially advantageous manner, in which decomposition reaction of a catalyst by by- produced water and hydrolysis reaction (reverse reaction) are suppressed and, a desired carbonate c...  
JP3387318
To obtain a carrier useful as the carrier of a platinum group catalyst or a platinum group metal-base catalyst compsn. as a catalyst used especially at the time of producing carbonic diester. This porous lithium aluminate catalyst carrie...  
JP2002371037
To provide a method for producing dimethyl carbonate having high purity by efficiently removing glycol ether produced as a by-product in the transesterification reaction of ethylene carbonate and methanol. Dimethyl carbonate is produced ...  
JP2002348263
To provide an advantageous method for separating a high purity aromatic carbonate as a solid from a mixed solution of reaction products obtained by reacting an aromatic hydroxy compound with carbon monoxide and molecular oxygen in the pr...  
JP2002338525
To promote a reaction for oxycarbonylating and facilitate recovery of respective components in the reaction for oxycarbonylating an aromatic hydroxy compound in the presence of carbon monoxide, oxygen and a catalyst.This method for produ...  
JP2002338523
To provide a method by which a reaction for forming a diaryl carbonate is made to more efficiently proceed than a conventional method.This method for producing the diaryl carbonate comprises converting a mixture containing an aromatic hy...  
JP2002338524
To provide a method by which a reaction for forming a diaryl carbonate is made to more efficiently proceed than a conventional method.This method for producing the diaryl carbonate comprises feeding a mixture of carbon monoxide with oxyg...  
JP2002322130
To obtain a purified diphenyl carbonate usable as a raw material for a less-colored polycarbonate by reducing the total chlorine of an acidic polymerization inhibitory substance derived from chlorine to 20 ppb or below.The method for pro...  
JP3363516
PURPOSE: To provide a method for simultaneously producing dialkyl carbonates and glycols which are industrially extremely important from an alkylene carbonate and alcohols by using a heterogeneous catalyst in a high conversion rate and s...  
JP3363517
PURPOSE: To provide a method for simultaneously producing dialkyl carbonates and glycols which are industrially extremely important from a carbonic acid ester of a glycol and a monohydric alcohol in a high conversion rate and selectivity...  
JP2002308804
To produce a diol of high purity having high ultraviolet transmissivity without lowering a yield in a method for producing a dialkyl carbonate and the diol using a cyclic carbonate and an aliphatic monohydric alcohol as a raw material.In...  
JP2002302468
To provide a method for recycling a mother liquor containing a catalyst to a reactor for producing a diarylcarbonate without causing inactivation of the catalyst in a method for collecting the catalyst from a diarylcarbonate- containing ...  
JP2002226434
To provide a two stage interfacial polycondensation process for producing a carboxylic acid diaryl ester in a good yield and in a good purity.This process for producing the carboxylic acid diaryl ester by an interfacial polycondensation ...  
JP2002212141
To provide a catalyst that can economically and efficiently produce an aromatic carbonate by reaction between an aromatic hydroxy compound, carbon monoxide and molecular oxygen with high catalytic activity, high selectivity and prolonged...  
JP2002212135
To provide a method for synthesizing a (substituted) aliphatic, alicyclic or araliphatic chloroformate by a reaction of phosgene, diphosgene and/or triphosgene with a corresponding alcohol.The reaction is carried out under a pressure of ...  
JP2002194022
To provide a method for purifying a (meth)acrylate ester wherein a coloration causing material can be removed by an efficient and easy method and to obtain a (meth)acrylate ester having a small amount of the coloration causing material a...  
JP2002193890
To provide a method for producing a high-purity carboxylic acid diaryl ester in an excellent yield achieving a reduced environmental pollution and a low content of organic substances in the drainage.This method for continuously producing...  
JP2002193891
To provide a method for producing a carboxylic acid diaryl ester having a low chlorine content, especially few amount of by-product, particularly a low urethane content.This method for continuously producing the carboxylic acid diaryl es...  
JP2002193892
To provide a method for producing a high-purity carbonate, with which impurities such as a very small amount of alcohols, ethers, etc., in the carbonate are extremely removed.This method for producing the high-purity carbonate is charact...  
JP2002167359
To provide a catalyst of high activity and selectivity and a method of reaction to use the above catalyst which enable to produce economically and effectively an aromatic carbonate by reacting an aromatic hydroxy compound, carbon monoxid...  
JP3314970
PURPOSE: To produce dihydroxy compounds and carbonic acid ester by spliting polycarbonates continuously. CONSTITUTION: Polycarbonate resin and monohydroxy compound are reacted in a distillation column in the presence of transesterificati...  
JP3310061
PURPOSE: To control reaction temperature by simple equipment and simple operations. CONSTITUTION: In an exothermic reaction which is conducted in a liquid phase between a liquid reactive component and a vapor reactive component, a gas of...  
JP3305066
PURPOSE: To produce the subject compound useful as a raw material for a transparent resin producible by an easily controllable polymerization process and having high surface strength and excellent heat-resistance, etc., without using a l...  
JP2002128741
To provide a method for separating dimethylcarbonate from reaction liquid obtained through transesterification between an alkylene carbonate and methanol.The reaction liquid obtained through the transesterification is continuously suppli...  
JP2002128744
To obtain a nonionic surfactant having good hydrolytic stability and high biodegradability.This surfactant is represented by general formula (1) [wherein, R1 denotes a chain hydrocarbon group; AO denotes an oxyalkylene group; X denotes H...  

Matches 651 - 700 out of 1,570