Granules or powder of disulfonylamide salt and method for producing same

Patent metadata

Field	Value
Publication number	US-10214419-B2
Application number	US-201415035011-A
Country	US
Kind code	B2
Filing date	Oct 31, 2014
Priority date	Nov 18, 2013
Publication date	Feb 26, 2019
Grant date	Feb 26, 2019

Abstract

In formula [I], R1 and R2 each independently represents a fluoroalkyl group having 1 to 6 carbon atoms, or a fluorine atom, and Y+ represents an alkali metal cation or an ammonium cation.

First claim

The invention claimed is:

1. Granules or powders consisting of a compound of formula [I],
wherein a modal diameter thereof is 5 μm to 80 μm:

in the formula [I], R 1 and R 2 each independently represents a fluoroalkyl group having 1 to 6 carbon atoms, or a fluorine atom, and Y + represents an alkali metal cation, and

wherein a concentration of a residual solvent is 800 ppm or less.

2. The granules or the powders according to claim 1 , wherein R 1 and R 2 represent fluorine atoms.

3. The granules or the powders according to claim 1 , wherein a median diameter is 5 μm to 45 μm and a ratio of (modal diameter) / (median diameter) is 1.7 or less.

4. The granules or the powders according to claim 3 , wherein the modal diameter is 5 μm to 39.619 μm.

5. The granules or the powders according to claim 3 , wherein the median diameter is 5 μm to 39.658 μm.

6. The granules or the powders according to claim 3 , wherein the ratio of (modal diameter) / (median diameter) is 0.76 to 1.15.

7. Granules or powders consisting of a compound of formula [I],
wherein a median diameter thereof is 45 μm or less:

in the formula [I], R 1 and R 2 each independently represents a fluoroalkyl group having 1 to 6 carbon atoms, or a fluorine atom, and Y + represents an alkali metal cation, wherein a concentration of a residual solvent is 800 ppm or less.

8. The granules or the powders according to claim 7 , wherein the median diameter is 5 μm to 45 μm.

9. The granules or the powders according to claim 7 , wherein R 1 and R 2 represent fluorine atoms.

10. Granules or powders consisting of a compound of formula [I],
wherein a ratio of (modal diameter)/(median diameter) is 1.7 or less:

in the formula [I], R 1 and R 2 each independently represents a fluoroalkyl group having 1 to 6 carbon atoms, or a fluorine atom, and Y + represents an alkali metal cation, and
wherein a concentration of a residual solvent is 800 ppm or less.

11. The granules or the powders according to claim 10 , wherein R 1 and R 2 represent fluorine atoms.

12. A method for producing granules or powders of claim 1 , comprising
adding an ester-based solvent solution comprising a compound of formula [I] to a halogenated hydrocarbon-based solvent:

in the formula [I], R 1 and R 2 each independently represents a fluoroalkyl group having 1 to 6 carbon atoms, or a fluorine atom, and Y + represents an alkali metal cation; and
allowing the granules of powders consisting of the compound of formula [I] to crystalize from the ester-based solvent and halogenated hydrocarbon-based solvent,
wherein the modal diameter thereof is 5 μm to 80 μm.

13. The method according to claim 12 , wherein a concentration of the compound of the formula [I] in the ester-based solvent solution is 20% by mass to 90% by mass.

Assignees

• Nippon Soda Co

Inventors

• Tsubokura Shiro
• Aiura Yasuyuki

Classifications

• C01P2004/61

  Micrometer sized, i.e. from 1-100 micrometer · CPC title

• C01B21/086 Primary

  containing one or more sulfur atoms · CPC title

• C01P2006/40

  Electric properties · CPC title

• H01M10/0568

  characterised by the solutes · CPC title

• H01M10/0563

  Liquid materials, e.g. for Li-SOCl2 cells · CPC title