PROCESS FOR PREPARING DIALKYL CARBONATE AND ALKANEDIOL
The invention relates to a process wherein a dialkyl carbonate stream containing an ether alkanol impurity is subjected to extractive distillation using an extraction solvent to obtain a top stream comprising dialkyl carbonate and a bottom stream comprising the extraction solvent and the ether alkan...
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| Main Authors | , |
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| Format | Patent |
| Language | English Polish |
| Published |
08.04.2024
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| Subjects | |
| Online Access | Get full text |
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| Abstract | The invention relates to a process wherein a dialkyl carbonate stream containing an ether alkanol impurity is subjected to extractive distillation using an extraction solvent to obtain a top stream comprising dialkyl carbonate and a bottom stream comprising the extraction solvent and the ether alkanol impurity, wherein the extraction solvent is an organic compound containing one or more hydroxyl groups and one or more ester moieties and/or ether moieties. Further, the invention relates to a process for making a diaryl carbonate, comprising reacting an aryl alcohol with a stream containing a dialkyl carbonate from which stream an ether alkanol impurity has been removed in accordance with the above-described process. |
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| AbstractList | The invention relates to a process wherein a dialkyl carbonate stream containing an ether alkanol impurity is subjected to extractive distillation using an extraction solvent to obtain a top stream comprising dialkyl carbonate and a bottom stream comprising the extraction solvent and the ether alkanol impurity, wherein the extraction solvent is an organic compound containing one or more hydroxyl groups and one or more ester moieties and/or ether moieties. Further, the invention relates to a process for making a diaryl carbonate, comprising reacting an aryl alcohol with a stream containing a dialkyl carbonate from which stream an ether alkanol impurity has been removed in accordance with the above-described process. |
| Author | VAN DER HEIDE, EVERT FISCHER, KAI JÜRGEN |
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| DocumentTitleAlternate | Sposób wytwarzania węglanu dialkilu i alkanodiolu |
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| RelatedCompanies | Shell Internationale Research Maatschappij B.V |
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| Snippet | The invention relates to a process wherein a dialkyl carbonate stream containing an ether alkanol impurity is subjected to extractive distillation using an... |
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| Title | PROCESS FOR PREPARING DIALKYL CARBONATE AND ALKANEDIOL |
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