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WO/1992/007816 |
The present invention provides a process for the preparation of alkoxycarbonyloxystyrene comprising reacting acyloxystyrene with a strong base to yield a phenolate to which is added an alkoxycarbonylating agent in an organic solvent and ...
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WO/1992/006066 |
A process for producing diester of carbonic acid safely in a stabilized manner with high selectivity and yield, which comprises conducting the vapor-phase catalytic reaction of carbon monoxide with nitrous ester in the presence of a soli...
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WO/1991/010639 |
The present invention relates to hitherto unknown intermediate of formula (I), in which R1 stands for hydrogen or a straight or branched aliphatic C1-C20 carbon chain or an aryl or aralkyl group, aryl and "ar" meaning an aromatic or hete...
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WO/1991/009832 |
A process for continuously producing an aromatic carbonate or its mixture corresponding to the starting material comprising dialkyl carbonate, alkyl aryl carbonate or a mixture thereof and the reactant comprising aromatic hydroxy compoun...
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WO/1991/006526 |
A process and a heterogeneous catalyst for the production of diaryl carbonates from the reaction of an aromatic hydroxy compound and a carbonyl halide and elimination of anhydrous hydrogen halide. The catalyst comprises a salt containing...
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WO/1990/015791 |
Carbonic esters are important as an extender for gasoline, an octane number improver and an organic solvent, and further as a substitute for phosgene used in the production of isocyanates, polycarbonates and intermediates of various agri...
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WO/1990/011995 |
Novel oxo-ionol derivatives are described which have a but-1-en-3-ol carbonate side chain. These derivatives are stable tobacco enhancers which impart a slight hay-like flavor to tobacco smoke.
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WO/1989/007587 |
A carbonic acid ester is produced by reacting an alcohol with both carbon monoxide and oxygen in the presence of a catalyst comprising a divalent copper atom in the form of a weak acid salt and/or halide and an alkaline earth metal in th...
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WO/1988/006150 |
A prepolymer stabilization process for polyalkylene carbonate polyols includes the steps of adding a small quantity of an organosulfonic acid with stirring until base neutralization is achieved. One measure of base neutralization is a ne...
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WO/1988/005430 |
A process for preparing diisocyanate compounds by the following two-step reaction without using phosgene. In the first step, a diamine and dimethyl carbonate are reacted with each other in the presence of an alkali catalyst to synthesize...
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WO/1988/001996 |
A method is provided for making reaction products of phosgene and dihydric phenol under interfacial reaction conditions. The dihydric phenol such as BPA is introduced into the reactor in the form of a stable suspension which reduces phos...
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WO/1987/007601 |
A process for the preparation of dihydrocarbyl carbonates comprising contacting an alkanol, carbon monoxide and oxygen with a heterogeneous catalyst which comprises a metal halide or mixed metal halide impregnated on an appropriate suppo...
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WO/1986/003192 |
Chloroformate compositions, particularly bischloroformate compositions, are prepared by the reaction of phosgene with a hydroxy compound, preferably a dihydroxy compound such as bisphenol A, in a heterogeneous mixture, while adding a hyd...
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WO/1984/003701 |
Alkylene carbonates and optionally dialkyl carbonates are prepared by reaction of an alkylene oxide with carbon dioxide in the presence of an alcohol. In addition there is added to the reaction mixture a trivalent phosphorus containing c...
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WO/1984/002339 |
Dihydrocarbyl carbonates are produced by reacting in the liquid phase under substantially anhydrous conditions a dihydrocarbyl peroxide, a primary or secondary alcohol and carbon monoxide in the presence as catalyst of copper in elementa...
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JP2013010841 |
To provide a compound having a high refractive index, exhibiting no absorption of the ultraviolet range and no fluorescence, excellent in transparency, giving no adverse effect on the environment on disposal, and polymerizable by an indu...
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JP2012236806 |
To provide a method for efficiently producing a carbonic ester compound in the presence of a catalyst from an aliphatic alcohol compound, carbon monoxide and oxygen.This method for producing the carbonic ester compound by reacting an ali...
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JP2012214723 |
To provide a polycarbonate diol useful as a raw material of polyurethane and a thermoplastic elastomer or the like, and excellent in thermal stability and hydrolysis resistance.The novel poly (branched-chain alkylene) carbonate diol uses...
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JP2012162523 |
To provide a method for producing a carbonic acid ester, which enables a high reaction speed and a high reaction rate by reacting a monohydric alcohol with carbon dioxide in the presence of a solid catalyst, even under a mild reaction co...
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JP2012153603 |
To provide a method for efficiently producing diphenyl carbonate with high yield and high selectivity by the reaction of carbon monoxide with a phenoxy compound under mild conditions without requiring a high temperature condition or with...
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JP2012153909 |
To produce carbonic acid diester with a sufficient yield and selectivity by an electrolytic reaction which has not been produced with a sufficient yield and selectivity in a conventional electrolytic reaction.In the method for producing ...
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JP2012140356 |
To provide a method for stably at high productivity, producing an aromatic carbonic acid ester with less by-product.The method for producing aromatic carbonic acid ester includes: reacting a starting material selected from the group cons...
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JP2012140355 |
To provide a method for producing dialkyltin alkoxide in high yield and further stably producing high-purity carbonic acid ester.The method for producing carbonic acid ester includes the processes of: continuously feeding to a distillati...
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JP2012092096 |
To provide a process for preparing an aromatic carbonate, preferably a diaryl carbonate that can recycle byproducts and avoid coproducts in an effective way.The invention relates to a process for continuously producing the diaryl carbona...
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JP2012092102 |
To provide a purification method by which a lower content of a dialkyl carbonate than by a known method is obtained in the purified dialkyl carbonate.The contents of by-products, especially, an alkoxy alcohol and an aliphatic carbonate e...
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JP2012092101 |
To provide a purification method by which a lower content of a dialkyl carbonate than by a known method is obtained in the purified dialkyl carbonate.The contents of by-products, especially, an alkoxy alcohol and an aliphatic carbonate e...
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JP2012072185 |
To solve the following problem: the process for synthesizing iodinated organic substances of low molecular mass is complicated.This invention relates to the process for preparing one or more iodinated organic substances (substances (S)) ...
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JP2012067030 |
To provide an improved method for producing a fluoroalkyl chloroformate as an important intermediate of agrochemicals.The method for producing a fluoroalkyl chloroformate represented by formula (2) includes reacting a fluoroalkyl alcohol...
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JP2012056910 |
To provide a production method which can also obtain a carbonic ester at even a mild reaction condition, controls the discharge of a by-product, and can easily separate/purify the carbonic ester.The method of producing a carbonic ester i...
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JP2011251939 |
To provide a purification method of carbonic ester capable of removing easily a trace amount of impurity showing absorption in a visible range, contained in the carbonic ester.In this purification method of carbonic ester, the carbonic e...
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JP2011236146 |
To provide a method for efficiently and inexpensively producing diaryl carbonate by causing diaryl oxalate to perform decarbonization reaction in the presence of a non-corrosive solid catalyst.In the method for producing diaryl carbonate...
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JP2011236163 |
To provide a method for treating a carbonate for efficiently utilizing the carbonate.The method for treating the carbonate comprises: bringing at least one kind of the carbonate selected from dialkyl carbonate, diaryl carbonate and alkyl...
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JP2011207795 |
To provide a simple method for producing a polycarbonate polyol polyacrylate compound without requiring a distillation operation of by-product alcohol.Vinyl alcohol, which is produced as a by-product in the reaction of a polycarbonate po...
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JP2011207881 |
To provide a process for the continuous preparation of diaryl carbonates from phosgene and at least one monohydroxy compound (monophenol) in the presence of a catalyst.The process comprises converting the formed hydrogen halide into a ha...
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JP2011207883 |
To provide a high-purity product in a good yield and a process for preparing a diaryl carbonate which achieves the reduction of the environmental pollution in a water treatment plant or the wastewater problem by maximum recycling of by-p...
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JP2011173820 |
To provide a method for producing a carbonic ester by which the amount of acetone employed as an entrainer can be controlled suitably when separating the carbonic ester.The method for producing the carbonic ester, including reacting a ke...
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JP2011168578 |
To provide a new compound suitable for a highly sensitive resist composition.This new compound containing a phenol substituent expressed by formula 1, a method for producing the same and a resist composition containing the same are provi...
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JP2011157361 |
To provide a continuous process for producing lower dialkyl carbonates as main product and alkylene glycol as by-product by transesterification of a cyclic alkylene carbonate (e.g. ethylene carbonate or propylene carbonate) with lower al...
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JP2011105717 |
To provide a method for purifying dialkyl carbonate, having less energy consumption as compared with those of conventional methods.This continuous method for purifying a dialkyl carbonate/alcohol mixture in the case of preparing a lower ...
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JP2011098949 |
To provide a process for producing a carbonate ester directly from an alcohol even under moderate reaction conditions.There is provided a process for producing a carbonate ester represented by formula (2) by allowing a monohydric alcohol...
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JP2011088904 |
To provide a method for preparing quinoline-substituted carbonate and carbamate compounds which are important intermediates in the synthesis of a 6-O-substituted macrolide antibiotic material.The carbonate or carbamate derivative express...
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JP2011032203 |
To provide a solvent that is flame-retardant and exhibits sufficient dissolvability for a lithium salt.The fluorocompound is represented by formula (1): A1A2CHOCOA. The electrolyte comprises the fluorocompound and a lithium salt.
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JP2011026308 |
To provide a method for producing a bischloroformate compound, improving productivity, a polycarbonate oligomer having a small number of monomers, and a solution containing the bischloroformate compound.The bischloroformate is represente...
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JP2011006367 |
To provide a method for producing a bischloroformate compound improving productivity and a solution containing the bischloroformate compound obtained by the method for producing the same.The bischloroformate expressed by the formula (che...
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JP2011006410 |
To provide a continuous method for preparing a lower dialkyl carbonate as the main product and an alkylene glycol as a by-product by performing the catalytic transesterification reaction between a cyclic alkylene carbonate and a lower al...
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JP2010285604 |
To provide a compound which is an aromatic polycyclic compound having a high refractive index, in which there is neither absorption of an ultraviolet region nor the problem of fluorescence and transparency is excellent, and the polymeriz...
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JP2010275299 |
To provide an aromatic compound sufficiently small in the molecular size compared with common polymer materials and having material properties expectably usable as a resist material.There is provided a new aromatic compound having a doub...
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JP2010248193 |
To provide a process for producing a diaryl carbonate which brings about a high purity product and an excellent yield and achieves the reduction of environmental pollution and the problem of waste water in the water treatment operation b...
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JP2010241811 |
To provide a method for preparing a diaryl carbonate and/or an alkylaryl carbonate from a dialkyl carbonate and an aromatic hydroxy compound.The method for preparing a diaryl carbonate and/or an alkylaryl carbonate uses a reactive distil...
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JP2010235461 |
To provide a method for producing an industrially suitable polycarbonate diol compound under mild reaction conditions by a simple method with a small number of processes.The method for producing the polycarbonate diol compound represente...
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