Method for drying and purifying lithium bis(fluorosulfonyl)imide salt
US-2019379088-A1 · Dec 12, 2019 · US
Process for producing fluorine-containing sulfonylimide salt
US9233849B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9233849-B2 |
| Application number | US-201213985915-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 28, 2012 |
| Priority date | Mar 3, 2011 |
| Publication date | Jan 12, 2016 |
| Grant date | Jan 12, 2016 |
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- Title
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Abstract
Official abstract text for this publication.
By reacting a fluorine-containing sulfonylimide ammonium salt such as ammonium N,N-di(fluorosulfonyl)imide with an alkali metal hydroxide such as lithium hydroxide, potassium hydroxide or sodium hydroxide under reduced pressure and at a low temperature of approximately 40° C., a fluorine-containing sulfonylimide alkali metal salt such as lithium N,N-di(fluorosulfonyl)imide, potassium N,N-di(fluorosulfonyl)imide or sodium N,N-di(fluorosulfonyl)imide is obtained.
First claim
Opening claim text (preview).
The invention claimed is: 1. A process for producing a fluorine-containing sulfonylimide salt of the following formula [II], the process comprising subjecting a fluorine-containing sulfonylimide ammonium salt of the following formula [I] to a cation exchange reaction under a reduced pressure of 0.01 to 65 torr in the presence of a solvent, using at least one compound selected from the group consisting of metal hydroxides and onium hydroxides: wherein in formula [I] and formula [II]: each of R 1 and R 2 independently is a fluoroalkyl group having 1 to 6 carbon atoms or a fluorine atom, and R 1 and R 2 may be bonded to each other to form a ring; and wherein in formula [II]: M n+ is a metal cation or an onium cation (excluding NH 4 + ), and n is the valency of the metal cation or the onium cation (excluding NH 4 + ), wherein n is an integer of 1 to 4, wherein the solvent is butyl acetate, and wherein the cation exchange reaction product does not contain ammonium ions. 2. The process for producing a fluorine-containing sulfonylimide salt according to claim 1 , wherein the at least one compound is selected from the group consisting of alkali metal hydroxides and onium hydroxides.
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Classifications
containing one or more hydrogen atoms · CPC title
by reactions not involving the formation of sulfonamide groups · CPC title
- C01B21/093Primary
containing also one or more sulfur atoms · CPC title
- C01B21/086Primary
containing one or more sulfur atoms · CPC title
having nitrogen atoms of sulfonamide groups further bound to another hetero atom · CPC title
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- What does patent US9233849B2 cover?
- By reacting a fluorine-containing sulfonylimide ammonium salt such as ammonium N,N-di(fluorosulfonyl)imide with an alkali metal hydroxide such as lithium hydroxide, potassium hydroxide or sodium hydroxide under reduced pressure and at a low temperature of approximately 40° C., a fluorine-containing sulfonylimide alkali metal salt such as lithium N,N-di(fluorosulfonyl)imide, potassium N,N-di(flu…
- Who is the assignee on this patent?
- Tsubokura Shiro, Suzuki Toru, Maruyama Michiaki, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification C01B21/093. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 12 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).