Examples of 'dialkyl carbonate' in a sentence
Meaning of "dialkyl carbonate"
dialkyl carbonate - Dialkyl carbonates are a type of organic compound that contain carbonate functional groups with alkyl groups attached to the carbonate carbon atoms
How to use "dialkyl carbonate" in a sentence
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dialkyl carbonate
Preferably the dialkyl carbonate is diethyl carbonate.
A process for the preparation of dialkyl carbonate.
The dialkyl carbonate is added gradually to the reaction mixture.
Process for preparing alkanediol and dialkyl carbonate.
The recovered dialkyl carbonate may optionally be further purified.
Process for producing dialkyl carbonate.
The preferred dialkyl carbonate is dimethyl carbonate or diethyl carbonate.
Process for preparation of dialkyl carbonate.
The dialkyl carbonate can be present in admixture with a further solvent.
The product of the reaction is a dialkyl carbonate and an alkanediol.
The dialkyl carbonate is then gradually introduced into the reaction mixture.
The alkylating agent can be an alkyl halide or a dialkyl carbonate.
The dialkyl carbonate recovered in the embodiments may optionally be further purified.
Diethylcarbonate is a preferred dialkyl carbonate.
The surplus dialkyl carbonate is preferably distilled off under reduced pressure.
See also
Such additional separation could result in loss of some dialkyl carbonate.
The dialkyl carbonate compositions were surprisingly effective in removing the paint and coatings.
Process for removing an alkanol impurity from a dialkyl carbonate stream.
A dialkyl carbonate trifluoroborane is a complex of boron trifluoride and a carbonic acid alkyl ester.
It is known to produce aromatic carbonates from a dialkyl carbonate and an aryl alcohol.
In this process a dialkyl carbonate is reacted with a bisphenol dicarboxylate to prepare the polycarbonate oligomer.
Alcoholysis of an organic carbamate with an alcohol produces a dialkyl carbonate and ammonia.
Recycling of the alkyl alcohol to the dialkyl carbonate production however will require substantial purification.
The present invention provides a novel process for producing dialkyl carbonate.
Dialkyl carbonate is discharged vía a line 9 and recovered as product.
The document discloses a process in which the dialkyl carbonate is converted in two steps.
Thus, the dialkyl carbonate once formed reverts to alkylene carbonate.
The reaction between an aromatic alcohol and a dialkyl carbonate takes place in two steps.
The dialkyl carbonate obtained is recovered as product, optionally after further purification.
In the second zone the separation between the dialkyl carbonate and the extractant is achieved.
Further, the aliphatic monohydric alcohol may contain a concomitant dialkyl carbonate.
The use of a very large excess of dialkyl carbonate is not however, without disadvantages.
However, the water advantage is only realized in a reduced yield of dialkyl carbonate.
Introducing dialkyl carbonate and aryl alcohol into a first reactive distillation column ;.
This mixture is usually separated into a top fraction containing the dialkyl carbonate and alkyl alcohol.
The mixture comprising dialkyl carbonate and alkanol in line 6 is passed to a distillation column 8.
Typically, dimethyl carbonate is used as the dialkyl carbonate reactant.
Suitable dialkyl carbonate for this purpose include, but are not limited to, dimethyl carbonate.
Process for the preparation of an alkanediol and a dialkyl carbonate comprising,.
In such processes, the dialkyl carbonate is converted into diaryl carbonate vía the following steps.
The process as claimed in claim 1, wherein the dialkyl carbonate is diethyl carbonate.
Therefore preferably the dialkyl carbonate is dimethyl carbonate or diethyl carbonate, more preferably diethyl carbonate.
In this first embodiment, the present invention provides a method of forming dialkyl carbonate.
A process according to claim 1, wherein the dialkyl carbonate is dimethyl carbonate or diethyl carbonate.
In this embodiment, the present invention provides another method of forming dialkyl carbonate.
A process for preparing a diaryl carbonate from a dialkyl carbonate and an aryl alcohol comprising,.
A process according to claim 1, characterized in that dimethyl carbonate is used as the dialkyl carbonate.
Examples of the dialkyl carbonate include diethyl carbonate, dimethyl carbonate, dibutyl carbonate, and dicyclohexyl carbonate.
The reactor operates under conditions, as described above, to form dialkyl carbonate and water.
The dialkyl carbonate ( DAC ) was put in another vessel and also heated to said temperature.
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