IP Library Granted Patent US 12,057,601
Granted Patent B2
US 12,057,601 · App. 17/424,972 · Granted Aug 6, 2024

Liquid composition

Inventors: Kohji Matsuoka (Kanagawa, JP); Ryuji Higashi (Kanagawa, JP); Masahiro Masuzawa (Kanagawa, JP); Hideo Yanagita (Tokyo, JP)
Assignee: Ricoh Company, Ltd.
H01M50/486C09D7/20C09D7/61C09D7/69C09D187/005C08K2003/2227C08K2201/005
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Quick Facts
Patent No.
US 12,057,601
App. No.
17/424,972
Granted
Aug 6, 2024
Kind
B2
Abstract

A disclosed liquid composition includes particles; a resin; a solvent A; and a solvent B differing from the solvent A, wherein a surface tension with respect to air at 25° C. is 25 mN/m or more and less than 50 mN/m, a 90% diameter is 2.5 μm or less, and a median diameter is 1 μm or less.

Claims (29)

1. A liquid composition, comprising:

particles;

a resin;

a solvent A; and

a solvent B differing from the solvent A,

wherein a surface tension with respect to air at 25° C. is 25 mN/m or more and less than 50 mN/m, a 90% diameter is 2.5 μm or less, and a median diameter is 1 μm or less, and

said liquid composition does not contain water.

2. The liquid composition according to claim 1 , wherein the resin is a polymeric dispersant having dispersible groups and adsorptive groups.

3. The liquid composition according to claim 1 , wherein the particles are inorganic particles.

4. The liquid composition according to claim 1 , wherein the solvent A is at least one solvent selected from the group consisting of a lactam, an alcohol, a sulfoxide, an ester, and a ketone.

5. The liquid composition according to claim 1 , wherein the solvent B is at least one solvent selected from the group consisting of an ether, a glycol, an ester, an alcohol, and a lactam.

6. A liquid composition, comprising:

particles;

a resin;

a solvent A; and

a solvent B differing from the solvent A,

wherein when D 50A+B (μm) represents a median diameter of the liquid composition, D 90A+B (μm) represents a 90% diameter of the liquid composition, D 50A (μm) represents a median diameter of a first dispersion liquid obtained by removing the solvent B from the liquid composition, and D 50B (μm) represents a median diameter of a second dispersion liquid obtained by removing the solvent A from the liquid composition, the liquid composition satisfies the following formulas:

1< D 50B /D 50A ,

1< D 50A+B /D 50A <1.1, and

D 90A+B <5 (μm) less, and

said liquid composition does not contain water.

7. A liquid composition, comprising:

a dispersion liquid containing particles, a resin, and a solvent A; and

a solvent B differing from the solvent A, the liquid composition being produced by adding the solvent B to the dispersion liquid,

wherein the liquid composition has a surface tension with respect to air at 25° C. of 25 mN/m or more and less than 50 mN/m, and a 90% diameter of 2.5 μm or less,

the dispersion liquid has a median diameter of 1 μm or less, and

said liquid composition does not contain water.

8. The liquid composition according to claim 1 , wherein the particles are electrically insulating particles.

9. The liquid composition according to claim 8 , wherein the liquid composition is used for production of an integrated separator electrode.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2021
From: MATSUOKA, KOHJI; HIGASHI, RYUJI; MASUZAWA, MASAHIRO; YANAGITA, HIDEO
To: RICOH COMPANY, LTD.
Reel/Frame 056943/0633 →
Priority Claims (2)
JP 2019-012588 · Jan 28, 2019 · national
JP 2019-215743 · Nov 28, 2019 · national
Continuity (1)
Related Publication 20220013865A1 · Jan 13, 2022