# US 11,440,875 B2 · Sulfonic acid, carboxylic acid, and salts thereof

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 11,440,875 B2
- Document ID: US11440875B2
- Status: Granted
- Kind: B2
- Application number: 16/495,641
- Filed: 2018-03-30
- Published: 2020-01-23
- Granted: 2022-09-13
- Earliest claimed: 2017-03-31
- Assignees: Daikin Industries, Ltd.
- Applicants: Daikin Industries, Ltd.
- Inventors: Masahiro Higashi; Satoru Yoneda; Akiyoshi Yamauchi; Sumi Ishihara; Yosuke Kishikawa; Marina Nakano; Shinnosuke Nitta; Hirokazu Aoyama
- Web page: https://patentgrep.com/patent/US11440875B2

## CPC

- C07C 59/185: Saturated compounds having only one carboxyl group and containing keto groups
- C07C 309/10: with the oxygen atom of at least one of the etherified hydroxy groups further bound to an acyclic carbon atom
- C07C 53/126: Acids containing more than four carbon atoms
- C07C 59/347: containing keto groups
- C07C 235/74: of a saturated carbon skeleton
- C07C 309/07: containing oxygen atoms bound to the carbon skeleton
- C11D 1/04: Carboxylic acids or salts thereof (soap C11D9/00)
- C11D 1/12: Sulfonic acids or sulfuric acid esters; Salts thereof
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C11D: DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL

## Abstract

A sulfonic acid or carboxylic acid containing a carbonyl group, or a salt thereof represented by the following formula: R1—C(═O)—(CR22)n—(OR3)p—(CR42)q-L-A wherein R1, R2, R3, R4, n, p, q, A and L are as defined herein.

## Claims

### Claim 1

A compound represented by the following formula:
wherein
R1 is a methyl group;
R2 and R4 are each individually H or a substituent, wherein the substituent is selected from the group consisting of a halogen atom, a C1-C10 linear or branched alkyl group, a C3-C10 cyclic alkyl group and a hydroxyl group;
R3 is a C1-C10 alkylene group;
n is an integer of 1 or greater;
p and q are each individually an integer of 0 or greater;
a sum of n, p, and q is an integer of 8 or greater;
A is —SO3X or —COOX, wherein X is NR54, imidazolium, or phosphonium, where R5s are each H or a non-substituted alkyl group and are the same as or different from each other and at least one R5 among four of R5s is H; and
L is a single bond, —CO2—B—*, —OCO—B—*, —CONR6—B—*, —NR6CO—B—*, or —CO—, where B is a single bond or a C1-C10 alkylene group, R6 is H or a C1-C4 alkyl group, and * indicates the bond to A in the formula.

### Claim 2 (depends on 1)

The compound according to claim 1,
wherein the compound contains 30 or fewer carbon atoms in total.

### Claim 3 (depends on 1)

The compound according to claim 1,
wherein L is a single bond.

### Claim 4 (depends on 1)

The compound according to claim 1,
wherein R2 and R4 are each H or a C1-C4 linear or branched alkyl group.

### Claim 5 (depends on 1)

The compound according to claim 1,
wherein R3 is a C1-C4 alkylene group free from a substituent.

### Claim 6 (depends on 1)

The compound according to claim 1,
wherein X in the formula is NR54.

### Claim 7 (depends on 1)

The compound according to claim 1,
wherein the compound is an aqueous dispersant.

### Claim 8 (depends on 1)

The compound according to claim 1, wherein the compound contains 10 to 30 carbon atoms in total.

### Claim 9 (depends on 1)

The compound according to claim 1, wherein the compound contains 10 to 20 carbon atoms in total.

### Claim 10 (depends on 1)

The compound according to claim 1, wherein A is —COOX and X is NR54.