# US 11,078,450 B2 · Material containing solid bleaching agent, and detergent composition

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- Number: US 11,078,450 B2
- Document ID: US11078450B2
- Status: Granted
- Kind: B2
- Application number: 16/095,027
- Filed: 2017-04-21
- Published: 2019-05-23
- Granted: 2021-08-03
- Earliest claimed: 2016-04-22
- Assignees: Shikoku Chemicals Corporation
- Applicants: Shikoku Chemicals Corporation
- Inventors: Akihiro Norimoto; Koichi Sahiro; Tsuyoshi Toyota; Yoshiya Iwasaki
- Web page: https://patentgrep.com/patent/US11078450B2

## CPC

- C11D 17/0039: {Coated compositions or coated components in the compositions, (micro)capsules}
- C11D 1/66: Non-ionic compounds {(C11D1/002, C11D1/004, C11D1/008 take precedence)}
- C11D 3/044: {Hydroxides or bases}
- C11D 3/08: Silicates
- C11D 3/10: Carbonates {; Bicarbonates}
- C11D 3/2079: {Monocarboxylic acids-salts thereof}
- C11D 3/2082: {Polycarboxylic acids-salts thereof}
- C11D 3/33: Amino carboxylic acids
- C11D 3/3902: {combined with specific additives}
- C11D 3/3937: {Stabilising agents}
- C11D 3/3942: {Inorganic per-compounds (C11D3/3902 takes precedence)}
- C11D 3/3945: {Organic per-compounds (C11D3/3902 takes precedence)}
- C11D 3/3951: {combined with specific additives}
- C11D 3/3953: {Inorganic bleaching agents (C11D3/3951 takes precedence)}
- C11D 3/3955: {Organic bleaching agents (C11D3/3951 takes precedence)}
- C11D 7/265: {Carboxylic acids or salts thereof}
- C11D 17/0047: {Detergents in the form of bars or tablets}
- C11D: DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL

## Abstract

A stabilized solid bleaching agent which has good solubility in water without undergoing the occurrence of foaming and without generating residues has been demanded. The present invention provides a stabilized solid-bleaching-agent-containing material having a coating layer formed therein, wherein the coating layer contains at least one component selected from the group consisting of an alkali metal salt of an aromatic carboxylic acid, an alkali metal salt of a non-cyclic dicarboxylic acid, an alkali metal salt of a non-cyclic monocarboxylic acid having 1 to 7 carbon atoms and mixtures thereof.

## Claims

### Claim 1

A solid bleaching agent-containing material, comprising: a first layer containing a solid bleaching agent; and a second layer formed of a coating layer,
wherein the first layer is a core and the second layer surrounds the first layer;
wherein the second layer is present in the solid bleaching agent-containing material in an amount of 5% by mass or more;
wherein the coating layer comprises one or more selected from the group consisting of alkali metal salts of aromatic carboxylic acids, alkali metal salts of acyclic dicarboxylic acids, alkali metal salts of acyclic monocarboxylic acids having a carbon number of from 1 to 7, and mixtures thereof; and
wherein the solid bleaching agent is one or more halogen bleaching agents selected from the group consisting of halogenated isocyanuric acids, alkali metal salts of halogenated isocyanuric acids, hydrates of alkali metal salts of halogenated isocyanuric acids, halogenated hydantoins, and mixtures thereof.

### Claim 2 (depends on 1)

The solid bleaching agent-containing material according to claim 1,
wherein the alkali metal salt of an aromatic carboxylic acid is one or more selected from the group consisting of alkali metal salts of benzoic acid, ortho-phthalic acid, meta-phthalic acid, para-phthalic acid, trimellitic acid, and para-t-butylbenzoic acid, and mixtures thereof.

### Claim 3 (depends on 1)

The solid bleaching agent-containing material according to claim 1,
wherein the alkali metal salt of an acyclic dicarboxylic acid is one or more selected from the group consisting of alkali metal salts of succinic acid, glutaric acid, adipic acid, suberic acid, azelaic acid, sebacic acid, undecanedioic acid, dodecanedioic acid, and tetradecanedioic acid, and mixtures thereof.

### Claim 4 (depends on 1)

The solid bleaching agent-containing material according to claim 1,
wherein the alkali metal salt of an acyclic monocarboxylic acid having a carbon number of from 1 to 7 is one or more selected from the group consisting of alkali metal salts of formic acid, acetic acid, propionic acid, butyric acid, valeric acid, hexanoic acid, and heptanoic acid, and mixtures thereof.

### Claim 5 (depends on 1)

A detergent composition, comprising: the solid bleaching agent-containing material as described in claim 1, and
one or more metal ion scavengers selected from the group consisting of aminocarboxylic acid salts, hydrates of aminocarboxylic acid salts, hydroxyaminocarboxylic acid salts, hydrates of hydroxyaminocarboxylic acid salts, tripolyphosphates, phosphonocarboxylic acids, alkali metal salts of phosphonocarboxylic acids, hydrates of phosphonocarboxylic acids, polyacrylic acid, alkali metal salts of polyacrylic acid, glutamic acid diacetate, hydrate of glutamic acid diacetate, and mixtures thereof.

### Claim 6 (depends on 1)

A detergent composition, comprising: the solid bleaching agent-containing material as described in claim 1, and one or more nonionic surfactants.

### Claim 7 (depends on 1)

A detergent composition, comprising: the solid bleaching agent-containing material as described in claim 1, and one or more alkali metal salts selected from the group consisting of alkali metal hydroxides, alkali metal silicates, alkali metal carbonates, alkali metal phosphates, and mixtures thereof.