Process for preparing phosphorus containing cyanohydrins
US-9850263-B2 · Dec 26, 2017 · US
Method for producing glufosinate P free acid
US9255115B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9255115-B2 |
| Application number | US-201214348376-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 28, 2012 |
| Priority date | Sep 30, 2011 |
| Publication date | Feb 9, 2016 |
| Grant date | Feb 9, 2016 |
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Abstract
Official abstract text for this publication.
The present invention provides a method for producing crystalline glufosinate P free acid with high purity from glufosinate P hydrochloride salt. In addition, the present invention also provides a method comprises a process of: dissolving glufosinate P hydrochloride salt in a solvent which is a mixed solvent of water and an alcohol(s) selected from the group of methanol, ethanol, propyl alcohol and isopropyl alcohol, and a ratio of water to the alcohol(s) is from 1:3 to 1:100 by volume; crystallizing glufosinate P free acid after neutralizing by addition of a base.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for producing a compound expressed by the following formula (I): the method comprising: dissolving a compound expressed by the following formula (II): in a solvent which is a mixed solvent of water and methanol, and a ratio…
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Chemistry & Metallurgy · mapped topic
- C07F9/301Primary
Chemistry & Metallurgy · mapped topic
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- What does patent US9255115B2 cover?
- The present invention provides a method for producing crystalline glufosinate P free acid with high purity from glufosinate P hydrochloride salt. In addition, the present invention also provides a method comprises a process of: dissolving glufosinate P hydrochloride salt in a solvent which is a mixed solvent of water and an alcohol(s) selected from the group of methanol, ethanol, propyl alcohol…
- Who is the assignee on this patent?
- Meiji Seika Pharma Co Ltd, Meiji Seika Pharma Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C07F9/301. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 09 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).