Nonaqueous electrolyte solution, electrochemical device, lithium ion secondary cell, and module
US-2015235772-A1 · Aug 20, 2015 · US
Process for the production of high voltage electrolyte solvents for Li-ion batteries
US10099994B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10099994-B2 |
| Application number | US-201615262603-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 12, 2016 |
| Priority date | Sep 12, 2016 |
| Publication date | Oct 16, 2018 |
| Grant date | Oct 16, 2018 |
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- Title
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Abstract
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A method for producing halogenated carbonates is provided, the method having the steps of reacting a halogenated hydroxyl moiety with an alkyl formate in the presence of a liquid solvent and a solid base. An exemplary halogenated carbonate so produced is trifluoroethyl methyl carbonate.
First claim
Opening claim text (preview).
The embodiment of the invention in which an exclusive property or privilege is claimed is defined as follows: 1. A method for producing halogenated carbonates, the method comprising: reacting a halogenated hydroxyl moiety with methyl chloroformate in the presence of a nonhalogenated compound selected from the group consisting of acetone, diethyl ketone, ethyl methyl ketone, acetophenone, cyclohexyl methyl ketone and combinations thereof, and a solid base, wherein the solid base is an inorganic compound selected from the group consisting of alkali carbonate, alkaline earth carbonate, alkali phosphate, alkaline earth phosphate, and combinations thereof. 2. The method as recited in claim 1 wherein the halogenated hydroxyl moiety is a fluorinated alcohol. 3. The method as recited in claim 1 wherein the reaction occurs in ambient atmosphere. 4. The method as recited in claim 1 wherein the halogenated carbonates are produced in about 1 to about 4 hours. 5. The method as recited in claim 1 wherein the halogenated carbonates are produced at temperatures between about −10° C. and about 20° C. 6. The method as recited in claim 1 wherein the halogenated carbonate is trifluoroethyl methyl carbonate. 7. The method as recited in claim 1 wherein the nonhalogenated compound is acetone and the base is potassium carbonate. 8. The method as recited in claim 1 wherein the halogenated hydroxyl moiety is trifluoroethanol. 9. The method as recited in claim 1 wherein the halogenated carbonates are produced having greater than 99.5 percent purity after a single filtration step. 10. The method as recited in claim 1 wherein no aqueous wash is required. 11. The method as recited in claim 1 wherein between 50 and 95 percent of the solid base remains a solid during the reaction.
Assignees
Inventors
Classifications
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
- C07C68/06Primary
from organic carbonates · CPC title
characterised by the solvents · CPC title
characterised by the solvent · CPC title
- C07C68/02Primary
from phosgene or haloformates · CPC title
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- What does patent US10099994B2 cover?
- A method for producing halogenated carbonates is provided, the method having the steps of reacting a halogenated hydroxyl moiety with an alkyl formate in the presence of a liquid solvent and a solid base. An exemplary halogenated carbonate so produced is trifluoroethyl methyl carbonate.
- Who is the assignee on this patent?
- Dzwiniel Trevor L, Pupek Krzysztof, Krumdick Gregory K, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification C07C68/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 16 2018 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).