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Process for preparing alkanediol and dialkyl carbonate
US8975432B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8975432-B2 |
| Application number | US-201013509648-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 15, 2010 |
| Priority date | Nov 16, 2009 |
| Publication date | Mar 10, 2015 |
| Grant date | Mar 10, 2015 |
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Abstract
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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 catalyst to obtain a reaction mixture comprising dialkyl carbonate, unconverted alkanol, alkanediol, unconverted alkylene carbonate and an alkoxy alkanol impurity; and subjecting the reaction mixture to distillation in a series of steps.
First claim
Opening claim text (preview).
What is claimed is: 1. A process for the preparation of an alkanediol and a dialkyl carbonate comprising: (a) reacting an alkylene carbonate and an alkanol in the presence of a transesterification catalyst to obtain a reaction mixture comprising dialkyl carbonate, unconverted alkanol, alkanediol, unconverted alkylene carbonate and an alkoxy alkanol impurity; (b) subjecting the reaction mixture to distillation in a first distillation column to obtain a top stream comprising dialk…
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- C07C68/065Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US8975432B2 cover?
- 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 catalyst to obtain a reaction mixture comprising dialkyl carbonate, unconverted alkanol, alkanediol, unconverted alkylene carbonate and an alkoxy alkanol impurity; and subjecting the reaction mix…
- Who is the assignee on this patent?
- Allais Cyrille Paul, Nisbet Timothy Michael, Vaporciyan Garo Garbis, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification C07C68/065. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 10 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).