Continuous processes for hydrolyzing hemicelluloses from lignocellulosic materials with cleaning system
US-2015354019-A1 · Dec 10, 2015 · US
Process for making HMF from sugars with reduced byproduct formation, and improved stability HMF compositions
US9422257B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9422257-B2 |
| Application number | US-201414771842-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 25, 2014 |
| Priority date | Mar 14, 2013 |
| Publication date | Aug 23, 2016 |
| Grant date | Aug 23, 2016 |
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- Title
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Abstract
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Disclosed is a process for making HMF′ or a derivative of HMF by dehydrating one or more hexose sugars in a reduced oxygen environment, in another, related aspect, a method for improving the stability and resistance to degradation of an HMF product Involves adding one or more antioxidants to the HMF product.
First claim
Opening claim text (preview).
What is claimed is: 1. A process for making hydroxymethylfurfural from an aqueous solution including one or more hexoses, comprising dehydrating the aqueous hexose solution through exposure to an acid in a reduced oxygen environment. 2. A process according to claim 1 , wherein an ester or ether derivative of hydroxymethylfurfural is formed by conducting the dehydration in the presence of an alcohol or a carboxylic acid, respectively. 3. A process according to either of claim 1 or 2 , wherein oxygen is displaced from the headspace of a reactor in which the dehydration takes place by sparging in another, inert gas. 4. A process according to claim 3 , comprising sparging nitrogen or carbon dioxide into the reactor.
Assignees
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Classifications
- C07D307/50Primary
Preparation from natural products · CPC title
Solutions {(composition of solutions A61K47/00)} · CPC title
not condensed with another ring, e.g. ranitidine, furosemide, bufetolol, muscarine · CPC title
Alcohols; Phenols; Salts thereof, e.g. glycerol; Polyethylene glycols [PEG]; Poloxamers; PEG/POE alkyl ethers · CPC title
- C07D307/48Primary
Furfural · CPC title
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Frequently asked questions
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- What does patent US9422257B2 cover?
- Disclosed is a process for making HMF′ or a derivative of HMF by dehydrating one or more hexose sugars in a reduced oxygen environment, in another, related aspect, a method for improving the stability and resistance to degradation of an HMF product Involves adding one or more antioxidants to the HMF product.
- Who is the assignee on this patent?
- Archer Daniels Midland Co
- What technology area does this patent fall under?
- Primary CPC classification C07D307/50. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 23 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).