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9012675 |
Aliphatic polycarbonate quench method
The present disclosure is directed to, in part, an aliphatic polycarbonate polymerization reaction initiated by combining an epoxide with carbon dioxide in the presence of a catalytic transition... |
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9006476 |
Process for the production of high-purity dimethyl carbonate
A process for producing a high-purity dimethyl carbonate, which includes: (I) cooling a commercial grade dimethyl carbonate containing 1 ppm or more of chlorine to a temperature from +6° C. to −5°... |
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8975432 |
Process for preparing alkanediol and dialkyl carbonate
The invention relates to a process for the preparation of an alkanediol and a dialkyl carbonate comprising: reacting an alkylene carbonate and an alkanol in the presence of a transesterification... |
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8937197 |
Gold-catalyzed synthesis of carbonates and carbamates from carbon monoxide
The invention provides a method for producing organic carbonates via the reaction of alcohols and carbon monoxide with oxygen adsorbed on a metallic gold or gold alloy catalyst. |
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8809569 |
Process for preparing dialkyl carbonate and diol products
Dialkyl carbonate and diol products are prepared in an integrated process performed by reacting an alkylene oxide with carbon dioxide in the presence of a non-halide-containing homogeneous... |
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8735608 |
Process for preparing carbonate and diol products
A method of forming a cyclic carbonate product is carried out by reacting an alkylene oxide, such as ethylene oxide, with carbon dioxide in the presence of a metal organic framework (MOF) catalyst... |
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8663564 |
Sequestration of carbon dioxide using metal oxides
Embodiments of the present invention relate to carbon dioxide sequestration systems and methods. In an embodiment, the invention includes a method of sequestering carbon dioxide. The method can... |
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8632792 |
Cooling sensation agent composition and sensory stimulation agent composition
A cooling sensation agent composition with a prolonged cool sensation effect is provided comprising at least one compound selected from the group consisting of aceia or ketal derivatives of... |
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8629295 |
Method for preparing dialkyl carbonate
The present invention provides a method for preparing dialkyl carbonate from urea or alkyl carbamate and alkyl alcohol using an ionic liquid comprising a cation, which produces a hydrogen ion, and... |
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8618322 |
Process for preparing alkanediol and dialkyl carbonate
The invention relates to a process for the preparation of an alkanediol and a dialkyl carbonate comprising: reacting an alkylene carbonate and an alkanol in the presence of a transesterification... |
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8592620 |
High shear system and process for the production of acetic anhydride
A method for producing acetic anhydride that includes operating a high shear device at a shear rate of greater than about 20,000 s−1, wherein the high shear device is configured with a rotor and a... |
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8580996 |
Aromatic carbonate, method of preparing the same, and polycarbonate prepared using the same
A method of preparing aromatic carbonate from dialkyl carbonate includes reacting an aromatic hydroxyl compound and dialkyl carbonate in the presence of at least one type of samarium-containing... |
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8569527 |
Reactor system, an absorbent and a process for reacting a feed
The present invention provides a reactor system comprising: —one or more purification zones comprising an absorbent which comprises silver, an alkali or alkaline earth metal, and a support... |
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8557500 |
Salt and photoresist composition comprising the same
The present invention provides a salt represented by the formula (I): wherein Q1 and Q2 independently each represent a fluorine atom or a C1-C6 perfluoroalkyl group, L1 represents a C1-C17... |
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8552214 |
Process for preparing dialkyl carbonates
The present invention relates to a continuous process for preparing lower dialkyl carbonates as main product and alkylene glycol as by-product by transesterification of a cyclic alkylene carbonate... |
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8445713 |
Catalyst for the synthesis of organic carbonates, process for preparing the same and application thereof
The present invention relates to a catalyst for the synthesis of organic carbonates, the preparation of the catalyst and the application of this catalyst in the synthesis of organic carbonates... |
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8415495 |
Process for continuous production of organic carbonates or organic carbamates and solid catalysts therefore
Processes for the alcoholysis, inclusive of transesterification and/or disproportionation, of reactants are disclosed. The alcoholysis process may include feeding reactants and a trace amount of... |
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8338631 |
Process for preparing dialkyl carbonates from alkylene carbonates and alcohols
The present invention relates to a continuous process for preparing lower dialkyl carbonates as main product and alkylene glycol as by-product by catalyzed transesterification of a cyclic alkylene... |
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8324419 |
Process for preparing polyether carbonate polyols
The invention relates to a process for preparing polyether carbonate polyols by addition of alkylene oxides and carbon dioxide onto H-functional starter substances using DMC catalysts, wherein one... |
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8318890 |
Polycarbonate diol
A polycarbonate diol which is useful as a raw material compound for producing a polycarbonate-based polyurethane having a sufficient mechanical strength and excellent in a balance of physical... |
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8241533 |
Use of carbonates
This invention publishes new usages of kinds of carbonic ester compounds. The new usage described in this invention is related to the application of carbonic ester compounds in the preparation of... |
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8148566 |
Method for producing a dialkyl carbonate and a diol
A method for producing a dialkyl carbonate and a diol, comprising: (a) effecting a transesterification reaction between a cyclic carbonate and an aliphatic monohydric alcohol in the presence of a... |
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8088686 |
Method of remedying deterioration of insulating film
The present invention provides a method of remedying deterioration of an insulating film which, during the remedial treatment of an insulating film deteriorated by plasma treatment, does not leave... |
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8058465 |
Process for industrially producing dialkyl carbonate and diol
A process for industrially producing dialkyl carbonate and a diol continuously through a reactive distillation system is disclosed. The process includes the steps of taking a cyclic carbonate and... |
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8049028 |
Industrial process for separating out dialkyl carbonate
It is an object of the present invention to provide a specific apparatus and process for using a single distillation column on a low boiling point reaction mixture containing a large amount of a... |
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8022241 |
Processes for producing carbonic ester and producing polycarbonate
A process for producing a carbonic ester, characterized in that an aromatic monohydroxy compound or an aliphatic monohydroxy compound is subjected to oxidative carbonylation with carbon monoxide... |
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7919645 |
High shear system and process for the production of acetic anhydride
A system and method for a high shear mechanical device incorporated into a process for the production of acetic anhydride as a reactor device is shown to be capable of decreasing mass transfer... |
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7884251 |
Industrial process for separating out by-produced alcohols
It is an object of the present invention to provide a specific industrial separation process that enables an alcohol to be separated out efficiently and stably for a prolonged period of time from... |
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7803961 |
Process for manufacturing dimethyl carbonate
A method of forming a dialkyl carbonate stream, includes obtaining a byproduct stream from a diaryl carbonate formation reaction that has alkanol, residual dialkyl carbonate, and residual aromatic... |
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7799940 |
Process for manufacturing dimethyl carbonate
The present invention provides methods of forming dialkyl carbonate wherein catalyst buildup in the reaction equipment, the separation equipment, and transfer lines there between is reduced and... |
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7799939 |
Process for production of dialkyl carbonate and diol
It is an object of the present invention to provide, for a case of producing a dialkyl carbonate and a diol from a cyclic carbonate and an aliphatic monohydric alcohol, a process that... |
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7790914 |
Method for dimethyl carbonate synthesis
There is provided a catalyst for dimethyl carbonate synthesis which has a high conversion rate under the supercritical condition of CO2 and can be handled easily. The catalyst for dimethyl... |
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7763745 |
Process for the production of dialkyl carbonate and alkanediol
An alkylene carbonate and an alkanol are subjected to transesterification to yield a dialkyl carbonate and alkanediol in a process comprising (a) introducing the alkylene carbonate and an alkanol... |
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7732630 |
Process for the preparation of an alkanediol and a dialkyl carbonate
An alkanediol and a dialkyl carbonate are prepared in a process comprising: (a) reacting an alkylene carbonate and an alkanol feedstock in a reaction zone under transesterification conditions to... |
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7718820 |
Process for the preparation of an alkanediol and a dialkyl carbonate
An alkanediol and a dialkyl carbonate are prepared in a process comprising: (a) reacting an alkylene carbonate and an alkanol feedstock in a first reaction zone under transesterification... |
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7652122 |
Method for producing an aromatic carbonate
A method for producing an aromatic carbonate, comprising: (1) performing a reaction between an organometal compound and carbon dioxide to obtain a reaction mixture containing a dialkyl carbonate... |
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7645896 |
Method for producing a dialkyl carbonate and a diol
A method for producing a dialkyl carbonate and a diol, comprising: (a) effecting a transesterification reaction between a cyclic carbonate and an aliphatic monohydric alcohol in the presence of a... |
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7622602 |
Method for preparing a dialkyl carbonate, and its use in the preparation of diaryl carbonates and polycarbonates
A method of making a dialkyl carbonate comprises: reacting, in a reactor comprising tantalum, an alkanol, oxygen, and carbon monoxide, in the presence of a catalyst. The reaction occurs in a... |
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7605285 |
Method and device for manufacturing dimethyl carbonate
The present invention provides a method and apparatus for producing dimethyl carbonate, wherein carbon dioxide is recovered from combustion exhaust gas of a steam reformer 10 and a boiler; and... |
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7598411 |
Processes for producing carbonic ester and producing polycarbonate
A process for producing a carbonic ester, characterized in that an aromatic monohydroxy compound or an aliphatic monohydroxy compound is subjected to oxidative carbonylation with carbon monoxide... |
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7563919 |
Process for the preparation of an alkanediol and a dialkyl carbonate
An alkanediol and a dialkyl carbonate are prepared in a process comprising: (a) contacting an alkylene carbonate with an alkanol feedstock under transesterification conditions in a reactive... |
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7541482 |
Process for production of alkyltin alkoxides
A process for the production of alkyltin alkoxides which comprises subjecting at least one alkyltin compound selected from among organotin compounds having tin-oxygen-tin linkages as the starting... |
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7531616 |
Process for industrial production of an aromatic carbonate
It is an object of the present invention to provide a specific process that enables aromatic carbonates to be produced with high selectivity and high productivity stably for a prolonged period of... |
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7518012 |
Process for the preparation of dialkyl carbonate
The present invention provides a process for the preparation of dialkyl carbonates of general formula (1) wherein R=alkyl (C1-C8) or C6H5CH2 the said process comprises a reaction in between cyclic... |
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7514521 |
Method for preparing a dialkyl carbonate, and its use in the preparation of diaryl carbonates and polycarbonates
Unexpected corrosion of downstream sections of a dialkyl carbonate manufacturing apparatus has been traced to alkyl chloroformate impurities, which slowly decompose to yield hydrochloric acid. An... |
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7504527 |
Low corrosive integrated process for preparing dialkyl carbonates
An integrated process for the production of a dialkyl carbonate and a diol from an alkylene oxide, carbon dioxide and an aliphatic monohydric alcohol is described in which an alkylene oxide is... |
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7491837 |
Low corrosive integrated process for preparing dialkyl carbonates
An integrated process for the production of a dialkyl carbonate and a diol from an alkylene oxide, carbon dioxide and an aliphatic monohydric alcohol is described in which an alkylene oxide is... |
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7462336 |
Apparatus for preparing a dialkyl carbonate
An apparatus for preparing a dialkyl carbonate comprises means for reacting an alkanol, oxygen, carbon monoxide, and a catalyst to form a mixture comprising a dialkyl carbonate, an alkyl... |
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7453007 |
Process for the production of unsymmetric and/or symmetric dialkyl carbonates and diols
A process for the production of a dialkyl carbonate and a diol, such as dimethyl carbonate and ethylene glycol, by reacting a feed containing a cyclic carbonate, a hydroxy alkyl carbonate and an... |
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7385070 |
Method for the catalytic conversion of alkylene carbonate
A method for catalytic conversion of alkylene carbonate, wherein alkylene carbonate is contacted with C1-C5 aliphatic alcohol and/or water in the presence of Mg, Al mixed (hydr) oxide catalyst... |