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US-2024246957-A1 · Jul 25, 2024 · US
Process to produce terephthalic acid
US9302971B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9302971-B2 |
| Application number | US-201414515823-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 16, 2014 |
| Priority date | Nov 1, 2013 |
| Publication date | Apr 5, 2016 |
| Grant date | Apr 5, 2016 |
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Abstract
Official abstract text for this publication.
This invention relates to the production of terephthalic acid by 1) cycloaddition of 2,5 substituted furan (such as 2,5-bis hydroxymethylfuran or 5-hydroxymethylfurfural) and ethylene, and 2) the subsequent oxidation of the dehydrated cycloaddition product to terephthalic acid. The invention relates more particularly to overall biobased pathways for making terephthalic acid from carbohydrates such as hexoses (e.g., glucose or fructose).
First claim
Opening claim text (preview).
We claim: 1. A terephthalic acid production process comprising reacting substituted furan with ethylene under cycloaddition reaction conditions and in the presence of a catalyst to produce a bicyclic ether, dehydrating the bicyclic ether to produce a substituted phenyl and thereafter oxidizing the substituted phenyl to terephthalic acid, wherein the substituted furan is represented by the formula:…
Assignees
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Classifications
- C07D493/08Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US9302971B2 cover?
- This invention relates to the production of terephthalic acid by 1) cycloaddition of 2,5 substituted furan (such as 2,5-bis hydroxymethylfuran or 5-hydroxymethylfurfural) and ethylene, and 2) the subsequent oxidation of the dehydrated cycloaddition product to terephthalic acid. The invention relates more particularly to overall biobased pathways for making terephthalic acid from carbohydrates s…
- Who is the assignee on this patent?
- Exxonmobil Chem Patents Inc
- What technology area does this patent fall under?
- Primary CPC classification C07D493/08. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 05 2016 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).