Manufacturing process for memantine
US-9452971-B2 · Sep 27, 2016 · US
Method for producing acrylamide aqueous solution
US9102590B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9102590-B2 |
| Application number | US-201214118075-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 21, 2012 |
| Priority date | May 19, 2011 |
| Publication date | Aug 11, 2015 |
| Grant date | Aug 11, 2015 |
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Abstract
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There is provided a method for producing an aqueous acrylamide solution by producing acrylamide by reacting a composition including acrylonitrile with water, in which the composition including acrylonitrile includes 20 to 80 mg of methacrylonitrile per 1 kg of the total weight of the composition including acrylonitrile. According to the present invention, a production method allowing stable obtainment of an aqueous acrylamide solution can be provided as polymerization of the acrylamide can be suppressed without causing a decreas+455e in quality.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for producing an aqueous acrylamide solution, the method comprising reacting an acrylonitrile composition and water in the presence of a catalyst to produce said aqueous acrylamide solution, wherein the acrylonitrile composition comprises acrylonitrile and 20 to 80 mg of methacrylonitrile per 1 kg of the acrylonitrile composition. 2. The method according to claim 1 , wherein the reacting of the acrylonitrile composition…
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Classifications
- C07C231/06Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US9102590B2 cover?
- There is provided a method for producing an aqueous acrylamide solution by producing acrylamide by reacting a composition including acrylonitrile with water, in which the composition including acrylonitrile includes 20 to 80 mg of methacrylonitrile per 1 kg of the total weight of the composition including acrylonitrile. According to the present invention, a production method allowing stable obt…
- Who is the assignee on this patent?
- Kanou Makoto, Hagiya Norifumi, Mitsubishi Rayon Co
- What technology area does this patent fall under?
- Primary CPC classification C07C231/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 11 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).