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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...
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°...
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...
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.
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...

Matches 1 - 50 out of 309 1 2 3 4 5 6 7 >