Method for producing ultra-pure bis(chlorosulfonyl)imide
US-2024391774-A1 · Nov 28, 2024 · US
Method for producing bis(halosulfonyl)amine
US9650250B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9650250-B2 |
| Application number | US-201314416495-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 24, 2013 |
| Priority date | Aug 6, 2012 |
| Publication date | May 16, 2017 |
| Grant date | May 16, 2017 |
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- Title
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Abstract
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The present invention provides an industrially advantageous method for producing bis(halosulfonyl)amine that makes it possible to inhibit the rapid generation of gas and reduce the amount of halogenating agent used by controlling the reaction rate among sulfamic acid, the halogenating agent and a halosulfonic acid to nearly a constant rate from the initial stage to the final stage of the reaction. The method for producing bis(halosulfonyl)amine of the present invention allows the obtaining of a bis(halosulfonyl)amine such as N-(fluorosulfonyl)-N-(chlorosulfonyl)amine or bis(chlorosulfonyl)amine by a production method that includes heating a mixture containing sulfamic acid and a halosulfonic acid to a temperature higher than room temperature, adding a halogenating agent thereto, and allowing to react while adjusting to a prescribed temperature.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for producing bis(halosulfonyl)amine, comprising: heating a mixture containing sulfamic acid and a halosulfonic acid to a temperature higher than room temperature, followed by adding a halogenating agent to the mixture to obtain the bis(halosulfonyl)amine. 2. The production method according to claim 1 , wherein the temperature higher than room temperature is 50° C. to 140° C. 3. The production method according to claim 1 , wherein the halogenating agent is added by dividing into a plurality of additions. 4. The production method according to claim 1 , wherein the halogenating agent is thionyl chloride. 5. The production method according to claim 4 , wherein 2 to 3 moles of thionyl chloride are added to 1 mole of sulfamic acid. 6. The production method according to claim 1 , further comprising reacting the mixture at a temperature of 50° C. to 85° C. after adding the halogenating agent. 7. The production method according to claim 1 , further comprising reacting the mixture at a temperature of 86° C. to 105° C. after adding the halogenating agent. 8. The production method according to claim 1 , further comprising reacting the mixture at a temperature of 106° C. to 140° C. after adding the halogenating agent.
Assignees
Inventors
Classifications
- C01B21/086Primary
containing one or more sulfur atoms · CPC title
- C01B21/093Primary
containing also one or more sulfur atoms · CPC title
characterised by the solutes · CPC title
characterised by the additives · CPC title
Energy storage using batteries · CPC title
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- What does patent US9650250B2 cover?
- The present invention provides an industrially advantageous method for producing bis(halosulfonyl)amine that makes it possible to inhibit the rapid generation of gas and reduce the amount of halogenating agent used by controlling the reaction rate among sulfamic acid, the halogenating agent and a halosulfonic acid to nearly a constant rate from the initial stage to the final stage of the reacti…
- Who is the assignee on this patent?
- Nippon Soda Co
- What technology area does this patent fall under?
- Primary CPC classification C01B21/086. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 16 2017 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).