Cleaning agent article

Abstract

Provided is a detergent article in which the dissolution residue of a detergent composition is suppressed, the cleaning properties of a fiber product are excellent, and the antibacterial properties imparted to the fiber product are excellent. This detergent article is provided with: a detergent composition containing the following component (a), component (b), component (c), and component (d), wherein the content of component (d) is more than 5 mass%; and a water-soluble film for packaging the detergent composition. Component (a): a nonionic surfactant; component (b): an anionic surfactant; component (c): a cationic surfactant; component (d): an alkaline agent.

Description

Technical Field

[0001] The present invention relates to a cleaning article comprising a cleaning composition and a water-soluble film packaging the cleaning composition. Background Art

[0002] In recent years, consumers have shown an increasing preference for convenience, and thus demand for relatively easy-to-use cleaning compositions. To improve the usability of cleaning compositions, for example, a cleaning article comprising a cleaning composition packaged in a water-soluble film has been disclosed.

[0003] On the other hand, the recent increase in nighttime washing and indoor drying has led to an increase in the problem of laundry odor caused by bacteria. Furthermore, due to the impact of the coronavirus in recent years, hygiene awareness has further increased, making antibacterial effects a necessary and basic function of detergents.

[0004] Furthermore, in recent years, there has been a demand for a reduction in the amount of cleaning compositions used, particularly the amount of surfactants, from the viewpoint of reducing the amount of chemical substances and reducing the environmental load.

[0005] Japanese Patent Application Laid-Open No. 2002-241799 discloses a cleaning article in which a solid cleaning composition containing a surfactant is packaged in a predetermined water-soluble film.

[0006] Japanese Patent Application Laid-Open No. 2002-3897 discloses a cleaning product in which a cleaning composition containing a surfactant is packaged in a water-soluble film containing a predetermined copolymer.

[0007] Japanese Patent Gazette No. 4-164998 discloses a single detergent package, which is formed by individually packaging a detergent composition containing (a) an anionic surfactant and (b) an alkaline builder, wherein the total amount of potassium ions in components (a) and (b) accounts for more than 0.5% by weight of the composition.

[0008] International Publication No. 99 / 29830 discloses a detergent particle group comprising (A) a base particle group 1 containing a water-insoluble inorganic salt, a nonionic surfactant, an anionic surfactant, and an alkaline builder. Summary of the Invention

[0009] A solid detergent composition is preferred from the viewpoint of efficient cleaning, but there is a concern that handling properties may be impaired due to the generation of dissolved residues.

[0010] The present invention provides a detergent article comprising: a detergent composition; and a water-soluble film for packaging the detergent composition. Dissolution of the detergent composition is suppressed, thereby achieving excellent cleaning properties for fiber products and imparting excellent antibacterial properties to the fiber products.

[0011] The present invention relates to a cleaning article comprising: a cleaning composition containing the following components (a), (b), (c), and (d), wherein the content of component (d) exceeds 5% by mass; and a water-soluble film for packaging the cleaning composition.

[0012] (a) Ingredients: nonionic surfactant;

[0013] (b) ingredient: anionic surfactant;

[0014] (c) ingredient: cationic surfactant;

[0015] (d) Ingredient: alkali agent.

[0016] According to the present invention, a detergent article having both cleaning and antimicrobial properties is provided, comprising: a detergent composition; and a water-soluble film encapsulating the detergent composition. Dissolution of the detergent composition is suppressed, thereby providing excellent cleaning properties for textile products and imparting excellent antimicrobial properties to the textile products. DETAILED DESCRIPTION

[0017] The mechanism by which the detergent article of the present invention suppresses residual dissolution of the detergent composition and thereby imparts excellent cleaning properties to textile products and excellent antibacterial properties to textile products is not yet determined, but is presumed as follows.

[0018] The detergent composition provided in the detergent article of the present invention is presumed to have improved cleaning properties by using the nonionic surfactant (a) component, the anionic surfactant (b) component, and the alkaline agent (d) component in combination.

[0019] Furthermore, it is speculated that since the detergent composition of the detergent article of the present invention contains component (b), when the detergent article of the present invention is dissolved in water to prepare a cleaning solution, even if lumps of component (d) are formed, component (b) acts on component (d) to delay the dissolution of component (d), thereby suppressing the formation of lumps of component (d). Even if lumps of component (d) are formed, the softness of the lumps of component (d) is improved, and thus the lumps of component (d) are more easily dissolved in the cleaning solution.

[0020] Furthermore, it is speculated that the detergent composition of the detergent article of the present invention, by combining components (a) to (d), does not impair the antimicrobial performance of component (c), thereby suppressing residual dissolution of the detergent composition and improving the solubility of the detergent article.

[0021] Furthermore, the cleaning article of the present invention is not limited by the above-mentioned mechanism of action.

[0022] [Cleaning Items]

[0023] The cleaning article of the present invention comprises: a cleaning composition containing the following components (a), (b), (c), and (d); and a water-soluble film packaging the cleaning composition. In this specification, the cleaning composition is referred to as the cleaning composition of the present invention.

[0024] (a) Ingredients: nonionic surfactant;

[0025] (b) ingredient: anionic surfactant;

[0026] (c) ingredient: cationic surfactant;

[0027] (d) Ingredient: alkali agent.

[0028] <(a)Component>

[0029] Component (a) is a nonionic surfactant. From the perspective of cleansing performance, component (a) may be one or more selected from the group consisting of polyoxyalkylene alkyl or alkenyl ethers, alkyl (poly)glycosides (glycoside-type nonionic surfactants), sorbitan-based nonionic surfactants, compounds in which alkylene oxides are added between ester bonds of long-chain fatty acid alkyl esters, fatty acid monoglycerides, and sucrose fatty acid esters.

[0030] The nonionic surfactant of the component (a) is preferably a nonionic surfactant containing (a1) alkylene oxide groups and having an average number of added moles of alkylene oxide groups of 1 to 30 (hereinafter referred to as the component (a1)).

[0031] The alkyleneoxy group of the component (a1) is preferably one or more groups selected from alkyleneoxy groups having 2 to 4 carbon atoms, and more preferably one or more groups selected from ethyleneoxy groups and propyleneoxy groups.

[0032] From the viewpoint of cleansing properties, the average number of added moles of alkylene oxide groups in component (a1) is 1 or more, preferably 6 or more, more preferably 10 or more, and is 30 or less, preferably 25 or less, more preferably 20 or less, and even more preferably 15 or less.

[0033] The component (a1) is preferably one or more nonionic surfactants selected from the group consisting of nonionic surfactants represented by the following general formula (a1).

[0034] R 1a (CO) m O-(A 1a O) n-R 2a (a1)

[0035] [Where R 1a is an aliphatic hydrocarbon group having 8 to 18 carbon atoms, R 2a is a hydrogen atom or a methyl group; CO is a carbonyl group, m is 0 or 1; A 1a The O group is one or more selected from alkylene oxide groups having 2 or more and 4 or less carbon atoms; n is A 1a The average number of moles of added O groups is 1 or more and 30 or less.]

[0036] In general formula (a1), from the viewpoint of cleansing properties, R 1a The number of carbon atoms is 8 or more, preferably 10 or more, more preferably 12 or more, and is 18 or less, preferably 16 or less, more preferably 14 or less.

[0037] R 1a It is an aliphatic hydrocarbon group, preferably a group selected from an alkyl group and an alkenyl group.

[0038] In the general formula (a1), A 1a The O group is one or more selected from alkyleneoxy groups having 2 or more and 4 or less carbon atoms, preferably one or more selected from alkyleneoxy groups having 2 or more and 3 or less carbon atoms, and more preferably ethyleneoxy groups. 1a When the O group includes a plurality of different alkyleneoxy groups, the different alkyleneoxy groups may be bonded in a block type or may be bonded randomly.

[0039] In the general formula (a1), n ​​is A 1a The average number of moles of O groups added is 1 or more and 30 or less. In the general formula (a1), from the viewpoint of cleansing properties, n is 1 or more, preferably 6 or more, more preferably 10 or more, and is 30 or less, preferably 25 or less, more preferably 20 or less, and even more preferably 15 or less.

[0040] In the general formula (a1), m is preferably 0 from the viewpoint of cleanability.

[0041] In general formula (a1), from the viewpoint of cleansing properties, R 2a Preferred is a hydrogen atom.

[0042] Specific examples of the nonionic surfactant having no alkylene oxide group other than the component (a1) include one or more selected from sucrose fatty acid esters, glycerol fatty acid esters, sorbitan fatty acid esters, alkyl glycosides, and glycerol monoethers.

[0043] (b) Ingredients

[0044] Component (b) is an anionic surfactant. From the perspective of cleaning performance, component (b) is preferably one or more selected from the group consisting of alkylarylsulfonic acid surfactants, sulfate surfactants, alkanesulfonic acid surfactants, olefinsulfonic acid surfactants, alkyl sulfosuccinate surfactants, sulfofatty acid ester surfactants, and fatty acids and their salts. More preferably, it is one or more selected from the group consisting of alkylarylsulfonic acid surfactants, sulfate surfactants, alkyl sulfosuccinate surfactants, and fatty acids and their salts. Even more preferably, it is one or more selected from the group consisting of alkylarylsulfonic acid surfactants, and fatty acids and their salts.

[0045] When the component (b) is a salt, examples of the salt of the component (b) include inorganic salts such as sodium salts, potassium salts, ammonium salts, and magnesium salts, and organic salts such as monoethanolamine salts, diethanolamine salts, triethanolamine salts, and morpholine salts. The salt of the component (b) is preferably an inorganic salt selected from alkali metal salts such as sodium salts and potassium salts, and alkaline earth metal salts such as magnesium salts, more preferably an alkali metal salt, and even more preferably a sodium salt.

[0046] From the viewpoint of controlling solubility, component (b) is preferably one or more selected from compounds represented by the following general formula (b1) [hereinafter referred to as component (b1)] and compounds represented by the following general formula (b2) [hereinafter referred to as component (b2)].

[0047] From the viewpoint of controlling solubility, the component (b) more preferably contains one or more selected from the component (b1) and one or more selected from the component (b2).

[0048] R 1b -B-SO3M(b1)

[0049] [In formula (b1), R 1b represents an alkyl group having 9 or more and 14 or less carbon atoms, B represents a benzene ring, and R bonded to a carbon atom of B 1b The carbon atom is a secondary carbon atom, M represents a cation; relative to R bonded to B 1b , the sulfonic acid group is bonded to the ortho, meta or para position.]

[0050] R 2b -COOM(b2)

[0051] [In formula (b2), R 2b represents an alkyl or alkenyl group having 10 or more and 18 or less carbon atoms, and M represents a cation.]

[0052] In the general formula (b1), R 1b It is an alkyl group having 9 or more, preferably 10 or more, and 14 or less, preferably 13 or less carbon atoms.

[0053] In the general formula (b1), M is preferably an alkali metal ion such as hydrogen ion, sodium ion, potassium ion, alkaline earth metal (1 / 2 atom) ion such as magnesium ion, calcium ion, or organic ammonium ion. The organic ammonium salt may be a salt based on an amine such as monoethanolamine, diethanolamine, or triethanolamine. M is preferably an alkali metal ion such as sodium ion, potassium ion, or an alkanolammonium ion such as monoethanolammonium ion or diethanolammonium ion, and more preferably a sodium ion.

[0054] As the component (b1), a p-alkylbenzenesulfonate in which the number of carbon atoms of the alkyl group is 11 or more and 14 or less is preferred, and a sodium salt of p-alkylbenzenesulfonate in which the number of carbon atoms of the alkyl group is 11 or more and 14 or less is more preferred. 1b A compound in which the group is an alkyl group having 11 to 14 carbon atoms and M is a sodium ion.

[0055] In the general formula (b2), R 2b It is an alkyl or alkenyl group having 10 or more, preferably 11 or more, more preferably 12 or more, and 18 or less, preferably 15 or less, more preferably 13 or less carbon atoms. 2b The group may be one or more groups selected from a linear alkyl group, a branched alkyl group, a linear alkenyl group and a branched alkenyl group, and a linear alkyl group is preferred.

[0056] In general formula (b2), M is preferably an alkali metal ion such as hydrogen ion, sodium ion, potassium ion, alkaline earth metal (1 / 2 atom) ion such as magnesium ion, calcium ion, or organic ammonium ion. The organic ammonium salt may be a salt based on an amine such as monoethanolamine, diethanolamine, or triethanolamine. M is preferably an alkali metal ion such as sodium ion, potassium ion, or an alkanolammonium ion such as monoethanolammonium ion or diethanolammonium ion, and more preferably a sodium ion.

[0057] Component (b2) is preferably one or more selected from lauric acid, myristic acid, palmitic acid, isopalmitic acid, stearic acid, isostearic acid, and salts thereof, more preferably one or more selected from lauric acid, myristic acid, palmitic acid, and salts thereof, and still more preferably one or more selected from lauric acid, myristic acid, and salts thereof.

[0058] The component (b2) is preferably wherein R 2b The compound is an alkyl group having 10 to 18 carbon atoms and M is a cation, more preferably a compound wherein M is a hydrogen ion or a sodium ion.

[0059] From the viewpoint of improving residual lumps, the component (b) preferably contains one or more anionic surfactants selected from fatty acids and salts thereof, and more preferably contains the component (b2).

[0060] Furthermore, from the viewpoint of formulation and improvement of residual solubility, the component (b) preferably comprises one or more anionic surfactants selected from fatty acids and their salts and one or more anionic surfactants selected from alkylbenzenesulfonic acids and their salts, more preferably comprises one or more anionic surfactants selected from component (b1) and one or more anionic surfactants selected from component (b2), and even more preferably comprises an anionic surfactant comprising sodium fatty acid and sodium alkylbenzenesulfonate.

[0061] Furthermore, from the viewpoint of improving the residual lumps, the component (b) is preferably sprayed onto the component (d).

[0062] (c) Ingredients

[0063] Component (c) is a cationic surfactant. Component (c) may be a quaternary ammonium surfactant. Component (c) may be a cationic antimicrobial agent having bactericidal, antimicrobial, or bactericidal properties.

[0064] The quaternary ammonium salt surfactant as the component (c) is preferably one or more selected from the group consisting of compounds represented by the following general formula (c1) and compounds represented by the following general formula (c2).

[0065]

[0066] [Where R 1c is an aliphatic hydrocarbon group having 8 to 18 carbon atoms, R 2c is a group selected from an aliphatic hydrocarbon group having 8 to 18 carbon atoms, an alkyl group having 1 to 3 carbon atoms, and a hydroxyalkyl group having 1 to 3 carbon atoms, R 3c and R 4c are independently selected from an alkyl group having 1 to 3 carbon atoms and a hydroxyalkyl group having 1 to 3 carbon atoms, - is an anion.]

[0067]

[0068] [Where R 5c is an aliphatic hydrocarbon group having 8 to 18 carbon atoms, R 6c and R 7c are independently selected from an alkyl group having 1 to 3 carbon atoms and a hydroxyalkyl group having 1 to 3 carbon atoms, - is an anion.]

[0069] In general formula (c1), from the viewpoint of cleaning power, R 1c The number of carbon atoms in R is preferably 9 or more, more preferably 10 or more, further preferably 12 or more, and preferably 16 or less. 1c It is preferably an alkyl group or an alkenyl group, and is preferably an alkyl group.

[0070] In the general formula (c1), R 2c It is a group selected from an aliphatic hydrocarbon group having 8 to 18 carbon atoms, an alkyl group having 1 to 3 carbon atoms, and a hydroxyalkyl group having 1 to 3 carbon atoms.

[0071] In R 2c In the case of an aliphatic hydrocarbon group having 8 or more and 18 or less carbon atoms, from the viewpoint of detergency, R 2c It is preferably an alkyl group or alkenyl group having 8 or more, and preferably 14 or less, more preferably 12 or less, and is preferably an alkyl group.

[0072] In the general formula (c1), R 3c and R 4c are independently selected from alkyl groups having 1 to 3 carbon atoms and hydroxyalkyl groups having 1 to 3 carbon atoms. 3c and R 4c Each independently represents a group selected from an alkyl group having 1 to 3 carbon atoms. Examples of the alkyl group having 1 to 3 carbon atoms include a methyl group, an ethyl group, and a propyl group. Examples of the hydroxyalkyl group having 1 to 3 carbon atoms include a hydroxymethyl group, a hydroxyethyl group, and a hydroxypropyl group.

[0073] In the general formula (c1), X - Anions. Examples of the anions include one or more anions selected from halogen ions and alkyl sulfate ions having 1 to 3 carbon atoms. Examples of halogen ions include chloride ions, bromide ions, and iodide ions. Examples of alkyl sulfate ions having 1 to 3 carbon atoms include methyl sulfate ions, ethyl sulfate ions, and propyl sulfate ions.

[0074] Preferred compounds of the compound of general formula (c1) include at least one selected from N-alkyl-N,N,N-trimethylammonium salts in which the number of carbon atoms in the alkyl group is 12 or more and 18 or less, N,N-dialkyl-N,N-dimethyl-ammonium salts in which the number of carbon atoms in the alkyl group is 8 or more and 16 or less, and N-alkyl-N,N-dimethyl-N-ethylammonium salts in which the number of carbon atoms in the alkyl group is 12 or more and 16 or less.

[0075] In the general formula (c2), R 5c It is an aliphatic hydrocarbon group having 8 or more and 18 or less carbon atoms. 5c The number of carbon atoms in R is preferably 8 or more, more preferably 10 or more, and even more preferably 12 or more, and is preferably 18 or less, and more preferably 16 or less. 5c It is preferably an alkyl group or an alkenyl group, and more preferably an alkyl group.

[0076] In the general formula (c2), R 6c and R 7c are independently selected from alkyl groups having 1 to 3 carbon atoms and hydroxyalkyl groups having 1 to 3 carbon atoms. 6c and R 7c Each independently represents a group selected from an alkyl group having 1 to 3 carbon atoms. Examples of the alkyl group having 1 to 3 carbon atoms include a methyl group, an ethyl group, and a propyl group. Examples of the hydroxyalkyl group having 1 to 3 carbon atoms include a hydroxymethyl group, a hydroxyethyl group, and a hydroxypropyl group.

[0077] In the general formula (c2), X - Anions. Examples of the anions include one or more anions selected from halogen ions and alkyl sulfate ions having 1 to 3 carbon atoms. Examples of halogen ions include chloride ions, bromide ions, and iodide ions. Examples of alkyl sulfate ions having 1 to 3 carbon atoms include methyl sulfate ions, ethyl sulfate ions, and propyl sulfate ions.

[0078] Specific examples of the compound of the general formula (c2) include N-dodecyl-N,N-dimethyl-N-benzylammonium salt, N-tridecyl-N,N-dimethyl-N-benzylammonium salt, N-tetradecyl-N,N-dimethyl-N-benzylammonium salt, N-pentadecyl-N,N-dimethyl-N-benzylammonium salt, N-hexadecyl-N,N-dimethyl-N-benzylammonium salt, N-dodecyl-N,N-diethyl-N-benzylammonium salt, N-tridecyl-N,N-diethyl-N-benzylammonium salt, N-tetradecyl-N,N-dimethyl-N-benzylammonium salt, One or more compounds selected from the group consisting of N-diethyl-N-benzylammonium salt, N-pentadecyl-N,N-diethyl-N-benzylammonium salt, N-hexadecyl-N,N-diethyl-N-benzylammonium salt, N-dodecyl-N-methyl-N-ethyl-N-benzylammonium salt, N-tridecyl-N-methyl-N-ethyl-N-benzylammonium salt, N-tetradecyl-N-methyl-N-ethyl-N-benzylammonium salt, N-pentadecyl-N-methyl-N-ethyl-N-benzylammonium salt, and N-hexadecyl-N-methyl-N-ethyl-N-benzylammonium salt.

[0079] (d) Ingredient

[0080] The component (d) is an alkali agent. The component (d) may be one or more alkali agents selected from the group consisting of alkali metal carbonates, alkali metal hydrogen carbonates, alkali metal silicates, and tripolyphosphates.

[0081] The alkali metal carbonate may be one or more selected from sodium carbonate and potassium carbonate, and is preferably sodium carbonate.

[0082] The alkali metal hydrogen carbonate may, for example, be one or more selected from sodium hydrogen carbonate and potassium hydrogen carbonate.

[0083] The alkali metal silicate may, for example, be one or more selected from sodium silicate and potassium silicate.

[0084] As the tripolyphosphate salt, an alkali metal salt of tripolyphosphate may be mentioned.

[0085] From the viewpoint of cleaning performance, component (d) is preferably one or more alkaline agents selected from alkali metal carbonates and alkali metal hydrogencarbonates, more preferably one or more selected from alkali metal carbonates, further preferably one or more selected from sodium carbonate and potassium carbonate, and further more preferably sodium carbonate.

[0086] From the perspective of further improving the solubility of the detergent article in water, component (d) is preferably partially or entirely coated with component (b). The coating layer of component (b) may be formed by spraying an acid precursor of component (b) onto component (d), i.e., a portion or all of component (d) is coated with the coating layer formed by spraying the acid precursor of component (b). Furthermore, in the present invention, the acid precursor of component (b) means that component (b) is in the form of an acid, not a salt.

[0087] The thickness of the coating layer of component (b) is 0.1 μm or more, preferably 0.3 μm or more, more preferably 0.5 μm or more, and further preferably 1 μm or more from the viewpoint of controlling solubility, and is 50 μm or less, preferably 30 μm or less, more preferably 20 μm or less, and further preferably 10 μm or less from the viewpoint of dissolution rate.

[0088] The thickness of the coating layer of the component (b) is calculated by cutting an arbitrarily sampled component (d) using a cutter such as a scalpel, observing the cutter using a scanning electron microscope (SEM), and observing the cutter using a scanning electron microscope (SEM).

[0089] Specifically, the film thickness of the coating layer of the component (b) in the component (d) particles was calculated based on images obtained by observing the cross-sections of five randomly sampled components (d) using a scanning electron microscope (magnification: 500 times), and the average value was obtained.

[0090] <Composition, etc.>

[0091] The cleaning composition of the present invention contains component (a) in an amount of preferably 1% by mass or more, more preferably 3% by mass or more, even more preferably 5% by mass or more, even more preferably 10% by mass or more, from the viewpoint of cleaning performance, and preferably 50% by mass or less, more preferably 45% by mass or less, even more preferably 40% by mass or less, even more preferably 25% by mass or less, even more preferably 20% by mass or less, even more preferably 18% by mass or less, from the viewpoint of powder properties.

[0092] The cleaning composition of the present invention contains the component (b) in an amount of preferably 0.1% by mass or more, more preferably 0.5% by mass or more, even more preferably 1.0% by mass or more, even more preferably 2.0% by mass or more, from the viewpoint of cleaning performance and solubility control, and preferably 10% by mass or less, more preferably 8.0% by mass or less, even more preferably 7.0% by mass or less, even more preferably 6.0% by mass or less, even more preferably 5.0% by mass or less, from the viewpoint of antibacterial performance.

[0093] In the present invention, the mass of the component (b) is defined as a value converted into a sodium salt.

[0094] The cleaning composition of the present invention contains, from the viewpoint of antibacterial performance, component (c) in an amount of preferably 0.1% by mass or more, more preferably 0.5% by mass or more, even more preferably 0.7% by mass or more, even more preferably 1.5% by mass or more, even more preferably 2.5% by mass or more, and preferably 20% by mass or less, more preferably 15% by mass or less, even more preferably 10% by mass or less, even more preferably 5% by mass or less in the cleaning composition.

[0095] The cleaning composition of the present invention contains the component (d) in an amount exceeding 5% by mass, preferably 10% by mass or more, more preferably 13% by mass or more, even more preferably 15% by mass or more, and even more preferably 19% by mass or more, from the viewpoint of cleaning performance, and preferably 50% by mass or less, more preferably 40% by mass or less, even more preferably 35% by mass or less, even more preferably 30% by mass or less, even more preferably 25% by mass or less, and even more preferably 22% by mass or less, from the viewpoint of residual dissolved matter.

[0096] In the cleaning composition of the present invention, the ratio (a) / (total content of surfactants) of the content of component (a) relative to the total content of surfactants contained in the cleaning composition is preferably 30% by mass or more, more preferably 40% by mass or more, further preferably 50% by mass or more, further more preferably 60% by mass or more, from the perspective of cleaning performance, and is preferably 95% by mass or less, more preferably 90% by mass or less, further preferably 85% by mass or less from the perspective of antibacterial performance and solubility. The total content of the surfactants contained in the cleaning composition can be the total content of component (a), component (b), component (c), and component (f) to be described in detail below.

[0097] In the cleaning composition of the present invention, the mass ratio (a) / (b) of the content of component (a) to the content of component (b) is preferably 1.0 or more, more preferably 1.1 or more, even more preferably 1.3 or more, even more preferably 2.0 or more, even more preferably 2.5 or more, even more preferably 2.9 or more, from the viewpoint of cleaning performance. From the viewpoint of cleaning performance and solubility, it is preferably 20 or less, more preferably 18 or less, even more preferably 16 or less, even more preferably 13 or less, even more preferably 10 or less, even more preferably 8.0 or less, even more preferably 5.0 or less, even more preferably 4.0 or less, even more preferably 3.5 or less.

[0098] In the cleaning composition of the present invention, the mass ratio (c) / (b) of the content of component (c) to the content of component (b) is preferably 0.1 or more, more preferably 0.2 or more, even more preferably 0.4 or more, even more preferably 0.60 or more, even more preferably 0.70 or more from the viewpoint of cleaning performance and antibacterial performance, and is preferably 5 or less, more preferably 4.5 or less, even more preferably 4.0 or less, even more preferably 3.0 or less, even more preferably 2.0 or less, even more preferably 1.0 or less, even more preferably 0.90 or less from the viewpoint of cleaning performance, solubility, and recontamination prevention.

[0099] In the cleaning composition of the present invention, the mass ratio (b) / (d) of the content of component (b) to the content of component (d) is preferably 0.05 or more, more preferably 0.07 or more, even more preferably 0.10 or more, even more preferably 0.15 or more, even more preferably 0.20 or more, even more preferably 0.23 or more, from the viewpoint of cleaning properties and solubility. From the viewpoint of cleaning performance, it is preferably 1.0 or less, more preferably 0.9 or less, even more preferably 0.8 or less, even more preferably 0.50 or less, even more preferably 0.30 or less.

[0100] In the cleaning composition of the present invention, from the perspective of easily destroying the dissolved residue, it is preferred that component (b) include component (b1), and from the perspective of suppressing the formation of dissolved residue, it is preferred that component (b) include component (b2). Component (b) may include only component (b1), but from the perspective of improving the dissolved residue, it is preferred that it include both components (b1) and (b2).

[0101] When the cleaning composition of the present invention contains component (b1) and component (b2), the mass ratio (b1) / (b2) of the content of component (b1) to the content of component (b2) in the cleaning composition of the present invention is preferably 0.1 or more, more preferably 0.2 or more, even more preferably 0.3 or more, even more preferably 0.5 or more, and is preferably 10 or less, more preferably 5 or less, even more preferably 3.3 or less, even more preferably 2.3 or less, even more preferably 1.5 or less, from the viewpoint of improving the dissolved residual.

[0102] (e) Ingredients

[0103] The cleaning composition of the present invention may optionally contain (e) an oil-absorbing carrier [hereinafter referred to as component (e)].

[0104] The type of component (e) is not particularly limited. From the perspective of maintaining the nonionic surfactant, the oil absorption capacity is preferably 120 mL / 100 g or greater. The upper limit is not particularly limited. In the present invention, from this perspective, the oil absorption carrier is preferably one or more selected from amorphous silica, calcium silicate, clay minerals, crystalline aluminosilicates, and amorphous aluminosilicates, and more preferably one or more selected from clay minerals and crystalline aluminosilicates. The oil absorption capacity of the oil absorption carrier can be measured in accordance with JIS K 5101-13-2.

[0105] The component (e) is preferably a water-insoluble oil-absorbing carrier. Regarding the component (e), "water-insoluble" means that 1 g or more will not dissolve in 100 g of water at 20°C.

[0106] The average primary particle size of component (e) is preferably 0.1 μm or more, more preferably 1 μm or more, and preferably 10 μm or less, more preferably 5 μm or less. The average primary particle size of component (e) is measured using a laser diffraction / scattering particle size distribution analyzer (e.g., HORIBA, LA-950). This average primary particle size is the D50 (median diameter) of the cumulative particle size distribution based on volume.

[0107] Specific examples of the component (e) include amorphous aluminosilicates (oil absorption capacity: 285 mL / 100 g) described in Japanese Patent Application Laid-Open Nos. 9-132794, 7-10526, 6-227811, and 8-119622.

[0108] More specifically, as the calcium silicate of the component (e), Florite R (manufactured by Tokuyama Corporation, oil absorption capacity: 400 to 500 mL / 100 g) can be used; as the amorphous silica of the component (e), Tokusil NR (manufactured by Tokuyama Corporation, oil absorption capacity: 210 to 270 mL / 100 g) and SYLOPURE (manufactured by FUJI SILYSIACHEMICAL LTD., oil absorption capacity: 240 to 280 mL / 100 g) can be used; and as the amorphous aluminosilicate of the component (e), an oil absorption carrier such as TIXOREX 25 (manufactured by Hanbul Chemical Co., Ltd., oil absorption capacity: 220 to 270 mL / 100 g) can be used.

[0109] In addition, crystalline aluminosilicates include zeolites. Specific zeolites include crystalline aluminosilicates such as A-type, X-type, and P-type zeolites. Preferred crystalline aluminosilicates include A-type zeolites (e.g., trade name "TOYOBUILDER" manufactured by Tosoh Corporation, with an oil absorption capacity of 40 mL / 100 g or greater as measured by JIS K 5101 method). Preferred crystalline aluminosilicates include P-type zeolites (e.g., trade names "Doucil A24" and "ZSEO64"; both manufactured by Crosfield; with an oil absorption capacity of 60 to 150 mL / 100 g), X-type zeolites (e.g., trade name "Wessalith XD" manufactured by Degussa; with an oil absorption capacity of 80 to 100 mL / 100 g), and mixed zeolites described in International Publication No. 98 / 42622.

[0110] The clay mineral of component (e) may be bentonite. Bentonite preferably has an ion exchange capacity of 50 to 100 meq / 100 g. Bentonite may be one or more selected from smectite clays selected from alkali metal or alkaline earth metal montmorillonite, saponite, or laponite, illite, attapulgite, and kaolinite.

[0111] Bentonite may be powdered bentonite or granulated bentonite. For example, reference may be made to the granulated clay minerals disclosed in Japanese Patent Application Laid-Open No. 2008-189719.

[0112] When the cleaning composition of the present invention contains component (e), the content of component (e) in the cleaning composition is preferably 5% by mass or more, more preferably 10% by mass or more, even more preferably 15% by mass or more, even more preferably 20% by mass or more, even more preferably 25% by mass or more, and is preferably 40% by mass or less, more preferably 35% by mass or less, even more preferably 32.5% by mass or less, from the viewpoint of residual solubility.

[0113] <(f)Component>

[0114] From the viewpoint of cleaning performance and foaming, the cleaning composition of the present invention may optionally contain a surfactant (hereinafter referred to as component (f)) other than components (a), (b), and (c).

[0115] As a surfactant other than the (a) component, the (b) component, and the (c) component, one or more types selected from amphoteric surfactants may be mentioned.

[0116] As the amphoteric surfactant of component (f), one or more selected from N-alkanoylaminopropyl-N,N-dimethylamine oxide, N-alkyl-N,N-dimethylamine oxide, N-alkanoylaminopropyl-N,N-dimethyl-N-carboxymethylammonium betaine, N-alkyl-N,N-dimethyl-N-carboxymethylammonium betaine, N-alkyl-N,N-dimethyl-N-sulfopropylammonium sulfobetaine, N-alkyl-N,N-dimethyl-N-(2-hydroxysulfopropyl)ammonium sulfobetaine, N-alkanoylaminopropyl-N,N-dimethyl-N-sulfopropylammonium sulfobetaine, and N-alkanoylaminopropyl-N,N-dimethyl-N-(2-hydroxysulfopropyl)ammonium sulfobetaine can be mentioned. Among these, the alkanoyl group is, for example, lauroyl or myristoyl. In addition, among these, the alkyl group is, for example, lauryl or myristyl.

[0117] When the cleaning composition of the present invention contains component (f), the cleaning composition of the present invention contains, from the viewpoint of cleaning performance and foaming, preferably 0.1% by mass or more, more preferably 0.2% by mass or more, and even more preferably 0.3% by mass or more, and preferably 2% by mass or less, more preferably 1.5% by mass or less, and even more preferably 1.2% by mass or less of component (f) in the above-mentioned cleaning composition.

[0118] (g) Ingredients

[0119] The cleaning composition of the present invention may optionally contain one or more compounds selected from inorganic sulfates and inorganic halogen compounds as component (g). Component (g) may be one or more compounds selected from sodium sulfate, magnesium sulfate, sodium chloride, and magnesium chloride. Component (g) may be a hydrate or an anhydride.

[0120] When the cleaning composition of the present invention contains component (g), the cleaning composition of the present invention contains, from the viewpoint of dissolution residual, preferably 2% by mass or more, more preferably 5% by mass or more, even more preferably 10% by mass or more, even more preferably 15% by mass or more, and preferably 60% by mass or less, more preferably 50% by mass or less, even more preferably 40% by mass or less, even more preferably 30% by mass or less of component (g) in the above-mentioned cleaning composition.

[0121] <(h) Component>

[0122] The cleaning composition of the present invention may optionally contain a polymer having a carboxylic acid group or a salt thereof and having a weight average molecular weight of 3,000 or more as the component (h).

[0123] The component (h) may, for example, be one or more polymers selected from polyacrylic acid and its salts, and copolymers of acrylic acid and maleic acid and their salts [hereinafter referred to as component (h1)].

[0124] Examples of the polyacrylic acid and its salt include one or more selected from polyacrylic acid, sodium polyacrylate, and potassium polyacrylate, and preferably one or more selected from sodium polyacrylate and potassium polyacrylate.

[0125] Examples of the copolymer of acrylic acid and maleic acid and its salt include one or more selected from the group consisting of a copolymer of acrylic acid and maleic acid, a sodium salt of a copolymer of acrylic acid and maleic acid, and a potassium salt of a copolymer of acrylic acid and maleic acid. Preferably, one or more selected from the group consisting of a sodium salt of a copolymer of acrylic acid and maleic acid and a potassium salt of a copolymer of acrylic acid and maleic acid are used. The molar ratio of the copolymer of acrylic acid and maleic acid, calculated as the number of moles of acrylic acid / the number of moles of maleic acid, is preferably 1 / 99 or greater, more preferably 10 / 90 or greater, and preferably 99 / 1 or less, more preferably 90 / 10 or less.

[0126] (h1) component can also be a copolymer comprising monomers other than acrylic acid and maleic acid that can be copolymerized with acrylic acid and / or maleic acid, as long as it is the degree that does not hinder the effect performance of the present invention. As monomers other than acrylic acid and maleic acid that can be copolymerized with acrylic acid and / or maleic acid, ethylene monomers, acrylic acid monomers, styrene monomers etc. can be exemplified, more specifically, methacrylic acid, methyl acrylate, ethyl acrylate, methyl methacrylate, styrene etc. can be exemplified. The molar ratio of monomers other than acrylic acid and maleic acid that can be copolymerized with acrylic acid and / or maleic acid in (h1) component is in (h1) component, preferably more than 0 mol%, and, preferably less than 5 mol%, more preferably less than 3 mol%, and then preferably 0 mol%. Therefore, the polyacrylic acid and its salt of the present invention, and the copolymer of acrylic acid and maleic acid and its salt can be in total constituent monomers, in the range of more than 0 mol% and less than 5 mol%, comprising the polymer or copolymer of monomers other than acrylic acid and maleic acid that can be copolymerized with acrylic acid and / or maleic acid.

[0127] The weight average molecular weight of the component (h) is 3,000 or more, preferably 3,500 or more, more preferably 4,000 or more, even more preferably 5,000 or more, even more preferably 6,000 or more, even more preferably 7,000 or more, even more preferably 8,000 or more, even more preferably 9,000 or more, even more preferably 10,000 or more, and is preferably 100,000 or less, more preferably 50,000 or less, even more preferably 25,000 or less, even more preferably 15,000 or less.

[0128] The weight average molecular weight can be measured according to the following method for measuring the weight average molecular weight.

[0129] <Method for measuring weight average molecular weight>

[0130] The weight average molecular weight of the component (h) can be measured by GPC (gel permeation chromatography) and the weight average molecular weight (Mw) can be determined by converting the weight average molecular weight to a standard substance.

[0131] The measurement conditions of GPC are shown below.

[0132] Column: manufactured by Tosoh Corporation, trade name: TSK-GEL guard PWXL

[0133] Manufactured by Tosoh Corporation, trade name: TSK-GEL G4000 PWXL

[0134] Manufactured by Tosoh Corporation, trade name: TSK-GEL G2500 PWXL

[0135] Mobile phase: 0.1 mol / L potassium dihydrogen phosphate and 0.1 mol / L sodium dihydrogen phosphate in water / acetonitrile = 90 / 10 (volume ratio)

[0136] Detector: Differential refractive index detector

[0137] Column temperature: 40°C

[0138] Flow rate: 1.0 mL / min

[0139] Conversion standard substance: Polyacrylic acid [manufactured by American Standard Corp.]

[0140] Sample: Ion-exchanged water was added to an aqueous polymer solution containing 0.8 g of a solid content to prepare a total liquid volume of 200 mL. 10 μL of the prepared solution was aliquoted and injected into a column.

[0141] When the cleaning composition of the present invention contains component (h), the cleaning composition of the present invention contains, from the viewpoint of cleaning performance and stability, component (h) in an amount of preferably 0.1% by mass or more, more preferably 0.5% by mass or more, even more preferably 2% by mass or more, even more preferably 5% by mass or more, and preferably 20% by mass or less, more preferably 15% by mass or less, even more preferably 10% by mass or less, even more preferably 7% by mass or less in the cleaning composition.

[0142] <(i)Component>

[0143] The cleaning composition of the present invention may optionally contain a polyalkylene glycol having a weight average molecular weight of 100 to 100,000 as the component (i).

[0144] The component (i) may, for example, be one or more selected from polyethylene glycol and polypropylene glycol.

[0145] The weight average molecular weight of the component (i) is 100 or more, preferably 1,000 or more, more preferably 5,000 or more, and is 100,000 or less, preferably 30,000 or less, more preferably 20,000 or less, and still more preferably 15,000 or less.

[0146] Here, the weight average molecular weight is a value determined by gel permeation chromatography using polystyrene as a standard substance.

[0147] When the cleaning composition of the present invention contains component (i), the cleaning composition of the present invention contains, from the viewpoint of stability, component (i) in an amount of preferably 0.001% by mass or more, more preferably 0.01% by mass or more, even more preferably 0.1% by mass or more, even more preferably 0.2% by mass or more, and preferably 5% by mass or less, more preferably 4% by mass or less, even more preferably 3% by mass or less, even more preferably 2% by mass or less, even more preferably 1% by mass or less in the cleaning composition.

[0148] (j) Ingredients

[0149] The cleaning composition of the present invention may optionally contain one or more enzymes selected from the group consisting of proteases, lipases, and amylases as component (j).

[0150] Examples of proteases include serine proteases (EC 3.4.21) and metalloproteases (EC 3.4.17 or EC 3.4.24). Preferred examples of proteases include neutral or alkaline serine proteases such as subtilisin (EC 3.4.21.62).

[0151] Examples of lipases include triacylglycerol lipase (EC3.1.1.3), phospholipase A2 (EC3.1.1.4), lysophospholipase (EC3.1.1.5), monoglyceride lipase (EC3.1.1.23), galactolipase (EC3.1.1.26), phospholipase A1 (EC3.1.1.32), and lipoprotein lipase (EC3.1.1.34).

[0152] Examples of amylases include α-amylase (EC 3.2.1.1), β-amylase (EC 3.2.1.2), and / or glucoamylase (EC 3.2.1.3). Preferred examples of amylases include neutral or alkaline α-amylases, preferably amylases derived from microorganisms such as bacteria or fungi.

[0153] When the cleaning composition of the present invention contains component (j), the cleaning composition of the present invention contains, from the viewpoint of cleaning performance, component (j) in an amount of preferably 0.002% by mass or more, more preferably 0.004% by mass or more, and even more preferably 0.008% by mass or more, and preferably 0.12% by mass or less, more preferably 0.1% by mass or less, and even more preferably 0.08% by mass or less, based on the amount of enzyme protein in the cleaning composition.

[0154] In the present invention, the definition regarding the mass of component (j) is based on calculation as the amount of enzyme protein.

[0155] Regarding component (j), the enzyme protein can be quantified using, for example, Protein Assay Kit Lowry Kit manufactured by Nacalai Tesque Co., Ltd., in accordance with the instruction manual.

[0156] The cleaning composition of the present invention may contain water. Examples of water include ion-exchanged water, purified water, and distilled water. Water is used as the remainder excluding components (a) to (j) and any optional components. Water also includes water used to add the ingredients of the cleaning composition.

[0157] The detergent composition of the present invention may optionally contain other ingredients known in the field of laundry detergents, such as bleaching agents (perborate, bleach activators, etc.), anti-recontamination agents, reducing agents (sulfites, etc.), fluorescent whitening agents, foam suppressants (silicone, etc.), organic solvents, fragrances, colorants, antibacterial agents, etc. (however, excluding ingredients equivalent to components (a) to (j)).

[0158] The cleaning composition of the present invention may be a solid cleaning composition. From the perspective of solubility, the cleaning composition of the present invention is preferably a cleaning composition in one or more forms selected from powder, granular, and particulate forms. The cleaning composition of the present invention may be a powdered cleaning composition.

[0159] The cleaning composition of the present invention can be produced by known methods. For example, spray drying, dry neutralization, dry granulation, dry blending, fluidized bed drying, thin film drying, extrusion granulation, tumbling granulation, stirring granulation, compaction granulation, surfactant loading, or a combination thereof can be used.

[0160] The bulk density of the cleaning composition of the present invention also varies depending on the production method, but is preferably 0.2 g / cm 3 More than 0.3 g / cm 3 More than 0.35 g / cm 3 More than, and preferably 1g / cm 3 Below, more preferably 0.95g / cm 3 Below, more preferably 0.9 g / cm 3 the following.

[0161] When the detergent composition of the present invention is a powder detergent composition, the average particle size of the detergent composition of the present invention is preferably 100 μm or more, more preferably 150 μm or more, and even more preferably 200 μm or more, and is preferably 800 μm or less, more preferably 750 μm or less, and even more preferably 700 μm or less.

[0162] The average particle size is determined by vibrating a standard sieve according to JIS Z 8801 for 5 minutes and then determining the mass fraction of particles passing through the sieve.

[0163] <Method for producing cleaning composition>

[0164] The cleaning composition of the present invention can be produced by mixing the component (a), the component (b), the component (c), the component (d), and other optional components.

[0165] Regarding the blending amounts of components (a) to (d) and other optional components, and the mass ratios of the blending amounts of the components in the method for producing the detergent composition of the present invention, the preferred contents in the detergent composition of the present invention may be substituted for the blending amounts.

[0166] The method for producing the cleaning composition of the present invention can appropriately apply the methods described in the cleaning composition of the present invention.

[0167] The cleaning composition of the present invention can be produced, for example, by the following steps 1 to 3. The cleaning composition of the present invention is not limited at all by the following production method.

[0168] Step 1: a step of impregnating component (e) with component (a);

[0169] Step 2: forming a coating layer of component (b) on component (d);

[0170] Step 3: A step of mixing the component (e) impregnated with the component (a), the component (d) having a coating layer of the component (b), and other components.

[0171] In step 1, component (a) may be mixed with component (e) to impregnate component (e) with component (a). Alternatively, in step 1, supported particles, preferably supported particles containing component (e), may be prepared and impregnated with component (a).

[0172] In step 2, a coating layer of component (b) is formed on a part or all of component (d). The coating layer of component (b) can be formed on a part or all of component (d) by spraying an acid precursor of component (b) onto component (d).

[0173] Examples of the acid precursor of the component (b) that can be used in the present invention include alkylbenzenesulfonic acid and fatty acid.

[0174] The amount of the acid precursor as the component (b) used is preferably 5 parts by mass or more, more preferably 10 parts by mass or more, and even more preferably 15 parts by mass or more, relative to 100 parts by mass of the component (d), and is preferably 200 parts by mass or less, more preferably 100 parts by mass or less, even more preferably 50 parts by mass or less, and even more preferably 30 parts by mass or less.

[0175] In the method for producing a detergent composition of the present invention, only component (b1) or only component (b2) may be blended as component (b). However, by blending components (b1) and (b2), the amount of powder detergent composition adhering to the mixer is reduced, the powder detergent composition can be stably produced, and packaging of the powder detergent composition in a water-soluble film is also facilitated.

[0176] In the method for producing a detergent composition of the present invention, when component (b1) and component (b2) are mixed as component (b), the mass ratio (b1) / (b2) of the amount of component (b1) mixed to the amount of component (b2) mixed is preferably 0.1 or more, more preferably 0.2 or more, even more preferably 0.3 or more, even more preferably 0.5 or more, from the viewpoint of solubility. Furthermore, from the viewpoint of solubility, it is preferably 10 or less, more preferably 5 or less, even more preferably 3.3 or less, even more preferably 2.3 or less, even more preferably 1.5 or less.

[0177] Cleaning products

[0178] The cleaning article of the present invention comprises: the cleaning composition of the present invention; and a water-soluble film encapsulating the cleaning composition. In other words, the present invention provides a cleaning article comprising the cleaning composition of the present invention and a water-soluble film, wherein the cleaning composition is encapsulated in the water-soluble film.

[0179] The cleaning article of the present invention may be a cleaning article in which the cleaning composition of the present invention is packaged with a water-soluble film.

[0180] In the present invention, the term "water-soluble" in the context of a water-soluble film means that 500 g of ion-exchanged water at 30°C is placed in a 1-liter glass beaker, a Teflon (registered trademark) stirring bar with a diameter of 8 cm is placed therein, 1 g of the film to be evaluated is added thereto, and after stirring at 100 rpm for 30 minutes, no insoluble matter is observed in the appearance.

[0181] From the viewpoint of preventing accidental ingestion and solubility, the thickness of the water-soluble film is preferably 1 μm or more, more preferably 10 μm or more, and even more preferably 50 μm or more, and is preferably 200 μm or less, more preferably 150 μm or less, and even more preferably 100 μm or less.

[0182] The water-soluble film is preferably composed of a polymer. The water-soluble film can be obtained by methods known in the art, such as casting, blow molding, extrusion molding, injection molding, etc. of the polymer. As a non-limiting example of the polymer for the manufacture of the water-soluble film, polyvinyl alcohol (PVA), vinyl alcohol copolymers, polyvinyl pyrrolidone, polyalkylene oxide, (modified) cellulose, (modified) cellulose-ether or -ester or -amide, polyacrylates and their salts, copolymers of maleic acid / acrylic acid, polyamino acids, i.e. peptides, polyamides such as polyacrylamide, polysaccharides such as starch and gelatin, natural rubbers such as xanthan gum and carragan (carragum) can be cited. Vinyl alcohol copolymers are copolymers of vinyl alcohol and other monomers, such as ethylene and acrylic acid. Preferably, the water-soluble film comprises a polymer selected from polyacrylates and water-soluble acrylates, methylcellulose, sodium carboxymethylcellulose, dextrin, ethylcellulose, hydroxyethylcellulose, maltodextrin, polymethacrylate, polyvinyl alcohol, vinyl alcohol copolymers, hydroxypropyl methylcellulose (HPMC), and combinations thereof. More preferably, the water-soluble film comprises a polymer selected from polyvinyl alcohol, vinyl alcohol copolymers, and hydroxypropyl methylcellulose. Even more preferably, the water-soluble film comprises polyvinyl alcohol, such as Solublon available from AICELLO CORPORATION. Suitable polymers for producing water-soluble films are described, for example, in U.S. Patent No. 6,995,126.

[0183] In the detergent article of the present invention, from the viewpoint of further improving the stability of the product, the total area of ​​the water-soluble film in contact with the detergent composition of the present invention is preferably 2 cm 2 More than 5cm, more preferably 2 More than 7cm, more preferably 2 More than 15 cm, more preferably 2 More than 30 cm, more preferably 2 Above, and, from the same viewpoint, preferably 100 cm 2 Below, more preferably 70cm 2 Below, more preferably 60cm 2 Below, more preferably 48cm 2 the following.

[0184] The cleaning article of the present invention can be made by any preferred process known in the art, such as a known process for making detergent bags. Examples of bag making processes are described in U.S. Patent Nos. 6,995,126, 7,127,874, 8,156,713, 7,386,971, 7,439,215, and U.S. Patent Application Publication No. 2009 / 199877.

[0185] The amount of content per detergent article of the present invention is preferably 5 g or more, more preferably 8 g or more, and even more preferably 10 g or more, and is preferably 50 g or less, more preferably 30 g or less, and even more preferably 25 g or less.

[0186] The preferred shape and size of each cleaning article of the present invention is, for example, a quadrilateral, with a side length of preferably 1 cm to 5 cm, and a thickness of preferably 1 cm to 5 cm, more preferably 1 cm to 4 cm. Furthermore, the mass of each cleaning article of the present invention is preferably 5 g or more, more preferably 10 g or more, and even more preferably 15 g or more, and preferably 50 g or less, more preferably 40 g or less, and even more preferably 30 g or less.

[0187] Another preferred shape and size of each cleaning article of the present invention is, for example, a rectangular parallelepiped, with a vertical length of preferably 5 cm to 20 cm, a horizontal length of preferably 1 cm to 4 cm, and a thickness of preferably 1 cm to 5 cm, more preferably 1 cm to 4 cm. Furthermore, each cleaning article of the present invention preferably weighs 5 g or more, more preferably 10 g or more, and preferably 50 g or less, more preferably 40 g or less, further preferably 30 g or less, and further preferably 20 g or less.

[0188] The detergent article of the present invention can be preferably used for textile products, for hard surfaces such as tableware, or for automatic dishwashing machines, and is preferably used for textile products.

[0189] When the fiber product is cleaned with the detergent composition of the present invention or the detergent article, the fiber to be cleaned can be any one of hydrophobic fiber and hydrophilic fiber. As hydrophobic fiber, for example, protein fiber (milk protein casein fiber, protein copolymer fiber (Promix) etc.), polyamide fiber (nylon etc.), polyester fiber (polyester etc.), polyacrylonitrile fiber (acrylic acid etc.), polyvinyl alcohol fiber (vinylon etc.), polyvinyl chloride fiber (polyvinyl chloride etc.), polyvinylidene chloride fiber (vinylidene etc.), polyolefin fiber (polyethylene, polypropylene etc.), polyurethane fiber (polyurethane etc.), polyvinyl chloride / polyvinyl alcohol copolymer fiber (polyvinyl chloride alcohol fiber (polychlal) etc.), polyalkylene parahydroxybenzoate fiber (benzoate etc.), polyvinyl fluoride fiber (polytetrafluoroethylene etc.), glass fiber, carbon fiber, alumina fiber, silicon carbide fiber, rock fiber (rock fiber), slag fiber (slag fiber), metal fiber (gold wire, silver wire, steel fiber) etc. can be exemplified. Examples of hydrophilic fibers include hair fibers (cotton, kapok, etc.), bast fibers (hemp, flax, ramie, hemp, jute, etc.), leaf vein fibers (Manila hemp, sisal, etc.), coconut fibers, rush, straw, animal hair fibers (wool, mohair, cashmere, camel hair, alpaca hair, llama hair, angora rabbit hair, etc.), silk fibers (domestic silk fibers, wild silk fibers), feathers, cellulose fibers (rayon, high wet modulus viscose fibers (polynosic), cuprammonium yarn, acetate fibers, etc.), etc.

[0190] Regarding the fiber, from the viewpoint of handling properties, the fiber is preferably a fiber containing cotton fiber. From the viewpoint of fiber handling properties, the content of cotton fiber in the fiber is preferably 5% by mass or more, more preferably 10% by mass or more, further preferably 15% by mass or more, further preferably 20% by mass or more, further more preferably 40% by mass or more, further more preferably 60% by mass or more, further more preferably 80% by mass or more, and preferably 100% by mass or less, and can be 100% by mass.

[0191] In the present invention, fiber products mean fabrics such as woven fabrics, knitted fabrics, and non-woven fabrics made of the above-mentioned hydrophobic fibers or hydrophilic fibers, and products such as underwear, T-shirts, shirts, overalls, slacks, hats, handkerchiefs, towels, knitted fabrics, socks, underwear, tights, etc. obtained using the same.

[0192] [Cleaning methods for fiber products]

[0193] The present invention provides a method for cleaning fiber products, comprising cleaning the fiber products with a cleaning liquid (hereinafter referred to as the cleaning liquid of the present invention) obtained by mixing the cleaning article of the present invention with water.

[0194] The cleaning method of the textile product of the present invention can appropriately apply the embodiments described in the detergent article of the present invention and the detergent composition of the present invention.

[0195] The method for cleaning fiber products of the present invention may be a method in which the cleaning agent of the present invention and water are placed in a cleaning tank and mixed to prepare the cleaning solution of the present invention, and then the fiber product to be cleaned is placed in the cleaning tank to clean the fiber product. However, from the perspective of enjoying the effects of the present invention, it is preferred to place the cleaning agent of the present invention, water, and the fiber product in the cleaning tank, dissolve the cleaning agent of the present invention in water, prepare the cleaning solution of the present invention, and simultaneously clean the fiber product.

[0196] In the cleaning liquid of the present invention, when the cleaning article of the present invention is mixed with water, the cleaning liquid is prepared so that the total amount of the cleaning composition of the present invention contained in the cleaning article of the present invention is preferably 0.01 g or more, more preferably 0.1 g or more, and even more preferably 0.3 g or more, and is preferably 10 g or less, more preferably 1 g or less, and even more preferably 0.5 g or less, per liter of water, from the viewpoints of environmental considerations and cleaning performance.

[0197] In the cleaning liquid of the present invention, from the viewpoint of cleaning performance, the cleaning liquid preferably contains component (a) in an amount of 15 ppm or more, more preferably 30 ppm or more, and even more preferably 45 ppm or more, and from the viewpoint of rinsing, preferably contains component (a) in an amount of 300 ppm or less, more preferably 250 ppm or less, and even more preferably 200 ppm or less.

[0198] In the cleaning liquid of the present invention, from the viewpoint of solubility, the amount of component (b) in the cleaning liquid is preferably 2 ppm or more, more preferably 3 ppm or more, and even more preferably 5 ppm or more. From the viewpoint of antibacterial performance, the amount of component (b) is preferably 100 ppm or less, more preferably 50 ppm or less, and even more preferably 40 ppm or less.

[0199] The cleaning liquid of the present invention preferably contains component (c) in an amount of 3 ppm or more, more preferably 5 ppm or more, and even more preferably 8 ppm or more, and for example, 50 ppm or less, from the viewpoint of antibacterial performance.

[0200] In the cleaning liquid of the present invention, from the viewpoint of cleaning performance, the cleaning liquid preferably contains component (d) in an amount of 5 ppm or more, more preferably 10 ppm or more, and even more preferably 15 ppm or more, and from the viewpoint of dissolution residue, the cleaning liquid preferably contains component (d) in an amount of 500 ppm or less, more preferably 400 ppm or less, and even more preferably 300 ppm or less.

[0201] When the cleaning liquid of the present invention contains component (e), the cleaning liquid of the present invention preferably contains component (e) in an amount of 30 ppm or more, more preferably 60 ppm or more, and even more preferably 100 ppm or more from the viewpoint of residual dissolved matter, and preferably contains component (e) in an amount of 160 ppm or less, more preferably 150 ppm or less, and even more preferably 140 ppm or less from the viewpoint of residual traces.

[0202] When the cleaning liquid of the present invention contains component (f), the cleaning liquid of the present invention preferably contains component (f) in an amount of 0.5 ppm or more, more preferably 1 ppm or more, and even more preferably 1.5 ppm or more, from the viewpoint of cleaning performance and foaming performance, and preferably contains component (f) in an amount of 20 ppm or less, more preferably 18 ppm or less, and even more preferably 16 ppm or less, from the viewpoint of rinsing performance.

[0203] When the cleaning liquid of the present invention contains component (g), the cleaning liquid of the present invention preferably contains component (g) in an amount of 20 ppm or more, more preferably 40 ppm or more, and even more preferably 80 ppm or more from the viewpoint of dissolved residue, and preferably contains component (g) in an amount of 250 ppm or less, more preferably 220 ppm or less, and even more preferably 200 ppm or less from the viewpoint of cleaning performance.

[0204] When the cleaning liquid of the present invention contains component (h), the cleaning liquid of the present invention preferably contains component (h) in an amount of 5 ppm or more, more preferably 10 ppm or more, and even more preferably 15 ppm or more, and for example, 50 ppm or less, from the perspective of cleaning performance for particulate stains.

[0205] When the cleaning liquid of the present invention contains component (i), the cleaning liquid of the present invention preferably contains component (i) in an amount of 0.5 ppm or more, more preferably 1 ppm or more, and even more preferably 1.5 ppm or more, and for example, 50 ppm or less, from the viewpoint of stability and dispersibility of the hydrophobic particles.

[0206] When the cleansing liquid of the present invention contains component (j), the cleansing liquid of the present invention preferably contains component (j) in an amount of 0.02 ppm or more, more preferably 0.04 ppm or more, and even more preferably 0.06 ppm or more, calculated as the amount of enzyme protein in the cleansing liquid from the viewpoint of cleansing performance, and preferably contains component (j) in an amount of 1.2 ppm or less, more preferably 1.0 ppm or less, and even more preferably 0.80 ppm or less from the viewpoint of skin irritation.

[0207] In recent years, with the increasing size of washing machines, the bath ratio, which is the ratio of the mass (kg) of the fiber product to the amount (liter) of water in the cleaning solution, i.e., the amount (liter) of water in the cleaning solution / the mass (kg) of the fiber product (hereinafter, this ratio may be used as the bath ratio), has tended to decrease. When using a domestic washing machine, if the bath ratio decreases, the friction between the fiber products increases due to stirring during cleaning, thereby impairing the handleability of the fiber products. From the perspective of cleaning performance, the bath ratio is preferably 5 or more, more preferably 10 or more, and further preferably 20 or more. From the perspective of washing efficiency, it is preferably 100 or less, more preferably 50 or less, and further preferably 30 or less.

[0208] The fiber product cleaning method of the present invention is suitable for a method in which the fiber is transported using a roller or the like while being immersed in a liquid used for refining, or a rotary cleaning method. The rotary cleaning method means a cleaning method in which a fiber product that is not fixed to a rotary machine is rotated around a rotating axis together with a cleaning liquid. The rotary cleaning method can be implemented by a rotary washing machine. Therefore, in the present invention, in terms of cleaning the fiber product more cleanly, it is preferred to use a rotary washing machine for cleaning the fiber product. As a rotary washing machine, specifically, a drum washing machine, a pulsator washing machine or an agitator washing machine can be exemplified. These rotary washing machines can use commercially available washing machines for household use.

[0209] In addition to the above-mentioned embodiment, the present invention discloses the following aspects.

[0210] <1>

[0211] A cleaning article comprising: a cleaning composition comprising the following components (a), (b), (c), and (d), wherein the content of component (d) exceeds 5% by mass; and a water-soluble film for packaging the cleaning composition.

[0212] (a) Ingredients: nonionic surfactant;

[0213] (b) ingredient: anionic surfactant;

[0214] (c) ingredient: cationic surfactant;

[0215] (d) Ingredient: alkali agent.

[0216] <2>

[0217] The detergent article as described in <1> above, wherein the component (a) is one or more nonionic surfactants selected from the group consisting of nonionic surfactants represented by the following general formula (a1),

[0218] R 1a (CO) m O-(A 1a O) n -R 2a (a1)

[0219] [Where R 1a is an aliphatic hydrocarbon group having 8 or more, preferably 10 or more, more preferably 12 or more, and 18 or less, preferably 16 or less, more preferably 14 or less carbon atoms, preferably a group selected from an alkyl group and an alkenyl group, R 2a is a hydrogen atom or a methyl group, preferably a hydrogen atom; CO is a carbonyl group, m is 0 or 1, preferably 0; A 1a The O group is one or more selected from alkyleneoxy groups having 2 or more and 4 or less carbon atoms, preferably one or more selected from alkyleneoxy groups having 2 or more and 3 or less carbon atoms, more preferably ethyleneoxy; n is A 1a The average number of moles of added O groups is 1 or more, preferably 6 or more, more preferably 10 or more, and 30 or less, preferably 25 or less, more preferably 20 or less, and even more preferably 15 or less.]

[0220] <3>

[0221] The cleaning article according to <1> or <2>, wherein the component (b) is one or more selected from the group consisting of a compound represented by the following general formula (b1) [hereinafter referred to as component (b1)] and a compound represented by the following general formula (b2) [hereinafter referred to as component (b2)].

[0222] R 1b -B-SO3M (b1)

[0223] [In formula (b1), R 1b represents an alkyl group having 9 or more, preferably 10 or more, and 14 or less, preferably 13 or less carbon atoms, B represents a benzene ring, and R bonded to a carbon atom of B 1b The carbon atom is a secondary carbon atom, M represents a cation, preferably an alkali metal ion such as sodium ion, potassium ion or an alkanolammonium ion such as monoethanolammonium ion, diethanolammonium ion, more preferably a sodium ion; relative to R bonded to B 1b , the sulfonic acid group is bonded to the ortho, meta or para position,]

[0224] R 2b -COOM(b2)

[0225] [In formula (b2), R 2b represents an alkyl or alkenyl group having 10 or more, preferably 11 or more, more preferably 12 or more, and 18 or less, preferably 15 or less, more preferably 13 or less carbon atoms, preferably at least one selected from a linear alkyl group, a branched alkyl group, a linear alkenyl group, and a branched alkenyl group, more preferably a linear alkyl group, and M represents a cation, preferably an alkali metal ion such as a sodium ion or potassium ion, or an alkanolammonium ion such as a monoethanolammonium ion or a diethanolammonium ion, more preferably a sodium ion.]

[0226] <4>

[0227] The detergent article according to the above <3>, wherein the component (b) includes the component (b2).

[0228] <5>

[0229] The cleaning article as described in <3> or <4> above, wherein the component (b) is an anionic surfactant comprising one or more selected from fatty acids and their salts, and one or more selected from alkylbenzenesulfonic acids and their salts, preferably an anionic surfactant comprising one or more selected from component (b1) and one or more selected from component (b2), and more preferably an anionic surfactant comprising sodium fatty acid and sodium alkylbenzenesulfonate.

[0230] <6>

[0231] The cleaning article as described in any one of <3> to <5> above, wherein in the cleaning composition, the mass ratio (b1) / (b2) of the content of component (b1) to the content of component (b2) is preferably 0.1 or more, more preferably 0.2 or more, further preferably 0.3 or more, further more preferably 0.5 or more, and is preferably 10 or less, more preferably 5 or less, further preferably 3.3 or less, further more preferably 2.3 or less, further more preferably 1.5 or less.

[0232] <7>

[0233] The cleaning article according to any one of <1> to <6>, wherein the component (c) is one or more selected from the group consisting of a compound represented by the following general formula (c1) and a compound represented by the following general formula (c2).

[0234]

[0235] [Where R 1cis an aliphatic hydrocarbon group having 8 or more, preferably 9 or more, more preferably 10 or more, further preferably 12 or more, and 18 or less, preferably 16 or less carbon atoms, preferably an alkyl group or an alkenyl group, more preferably an alkyl group, R 2c is a group selected from an aliphatic hydrocarbon group having 8 to 18 carbon atoms, an alkyl group having 1 to 3 carbon atoms, and a hydroxyalkyl group having 1 to 3 carbon atoms, R 3c and R 4c are each independently a group selected from an alkyl group having 1 to 3 carbon atoms and a hydroxyalkyl group having 1 to 3 carbon atoms, preferably a group selected from an alkyl group having 1 to 3 carbon atoms, - is an anion, preferably one or more anions selected from halogen ions and alkyl sulfate ions having 1 to 3 carbon atoms,]

[0236]

[0237] [Where R 5c is an aliphatic hydrocarbon group having 8 or more, preferably 10 or more, more preferably 12 or more, and 18 or less, preferably 16 or less carbon atoms, preferably an alkyl group or an alkenyl group, more preferably an alkyl group, R 6c and R 7c are each independently a group selected from an alkyl group having 1 to 3 carbon atoms and a hydroxyalkyl group having 1 to 3 carbon atoms, preferably a group selected from an alkyl group having 1 to 3 carbon atoms, - It is an anion, preferably one or more anions selected from halogen ions and alkyl sulfate ions having 1 to 3 carbon atoms.]

[0238] <8>

[0239] The cleaning article according to any one of <1> to <7>, wherein the component (d) is one or more alkaline agents selected from alkali metal carbonates, alkali metal bicarbonates, alkali metal silicates and tripolyphosphates, preferably one or more alkaline agents selected from alkali metal carbonates and alkali metal bicarbonates, more preferably one or more alkaline agents selected from alkali metal carbonates, further preferably one or more alkaline agents selected from sodium carbonate and potassium carbonate, and further more preferably sodium carbonate.

[0240] <9>

[0241] The cleaning article according to any one of <1> to <8>, wherein a part or all of component (d) is coated with component (b), and preferably a part or all of component (d) is coated with a coating layer formed by spraying an acid precursor of component (b).

[0242] <10>

[0243] The cleaning article as described in any one of <1> to <9> above, wherein the cleaning composition contains component (a) in an amount of preferably 1% by mass or more, more preferably 3% by mass or more, even more preferably 5% by mass or more, even more preferably 10% by mass or more, and preferably 50% by mass or less, more preferably 45% by mass or less, even more preferably 40% by mass or less, even more preferably 25% by mass or less, even more preferably 20% by mass or less, even more preferably 18% by mass or less.

[0244] <11>

[0245] The cleaning article as described in any one of <1> to <10> above, wherein the cleaning composition contains the component (b) in an amount of preferably 0.1% by mass or more, more preferably 0.5% by mass or more, further preferably 1.0% by mass or more, further more preferably 2.0% by mass or more, and, from the viewpoint of antibacterial performance, preferably 10% by mass or less, more preferably 8.0% by mass or less, further preferably 7.0% by mass or less, further more preferably 6.0% by mass or less, further more preferably 5.0% by mass or less.

[0246] <12>

[0247] The cleaning article as described in any one of <1> to <11> above, wherein the cleaning composition contains component (c) in an amount of preferably 0.1% by mass or more, more preferably 0.5% by mass or more, even more preferably 0.7% by mass or more, even more preferably 1.5% by mass or more, even more preferably 2.5% by mass or more, and preferably 20% by mass or less, more preferably 15% by mass or less, even more preferably 10% by mass or less, even more preferably 5% by mass or less.

[0248] <13>

[0249] The cleaning article as described in any one of <1> to <12> above, wherein the cleaning composition contains more than 5% by mass, preferably 10% by mass or more, more preferably 13% by mass or more, even more preferably 15% by mass or more, even more preferably 19% by mass or more, and preferably 50% by mass or less, more preferably 40% by mass or less, even more preferably 35% by mass or less, even more preferably 30% by mass or less, even more preferably 25% by mass or less, even more preferably 22% by mass or less of component (d).

[0250] <14>

[0251] The cleaning article as described in any one of <1> to <13> above, wherein in the cleaning composition, the ratio of the content of component (a) to the total content of the surfactants contained, (a) / (total content of the surfactants), is preferably 30% by mass or more, more preferably 40% by mass or more, further preferably 50% by mass or more, further more preferably 60% by mass or more, and is preferably 95% by mass or less, more preferably 90% by mass or less, further preferably 85% by mass or less.

[0252] <15>

[0253] The cleaning article according to any one of <1> to <14> above, wherein in the cleaning composition, the mass ratio (a) / (b) of the content of component (a) to the content of component (b) is preferably 1.0 or more, more preferably 1.1 or more, further preferably 1.3 or more, further preferably 2.0 or more, further more preferably 2.5 or more, further more preferably 2.9 or more, and is preferably 20 or less, more preferably 18 or less, further preferably 16 or less, further more preferably 13 or less, further more preferably 10 or less, further more preferably 8.0 or less, further more preferably 5.0 or less, further more preferably 4.0 or less, further more preferably 3.5 or less.

[0254] <16>

[0255] The cleaning article according to any one of <1> to <15>, wherein in the cleaning composition, the mass ratio (c) / (b) of the content of component (c) to the content of component (b) is preferably 0.1 or more, more preferably 0.2 or more, even more preferably 0.4 or more, even more preferably 0.60 or more, even more preferably 0.70 or more, and is preferably 5 or less, more preferably 4.5 or less, even more preferably 4.0 or less, even more preferably 3.0 or less, even more preferably 2.0 or less, even more preferably 1.0 or less, even more preferably 0.90 or less.

[0256] <17>

[0257] The cleaning article according to any one of <1> to <16>, wherein in the cleaning composition, the mass ratio (b) / (d) of the content of component (b) to the content of component (d) is preferably 0.05 or more, more preferably 0.07 or more, even more preferably 0.10 or more, even more preferably 0.15 or more, even more preferably 0.20 or more, even more preferably 0.23 or more, and is preferably 1.0 or less, more preferably 0.9 or less, even more preferably 0.8 or less, even more preferably 0.50 or less, even more preferably 0.30 or less.

[0258] <18>

[0259] The cleaning article according to any one of <1> to <17>, wherein the cleaning composition further comprises (e) an oil-absorbing carrier [hereinafter referred to as component (e)].

[0260] <19>

[0261] The cleaning article as described in any one of <1> to <18> above, wherein component (e) is one or more selected from amorphous silica, calcium silicate, clay minerals, crystalline aluminosilicates, and amorphous aluminosilicates, and preferably one or more selected from clay minerals and crystalline aluminosilicates.

[0262] <20>

[0263] The cleaning article as described in <18> or <19> above, wherein the cleaning composition contains component (e) in an amount of preferably 5% by mass or more, more preferably 10% by mass or more, further preferably 15% by mass or more, further preferably 20% by mass or more, further more preferably 25% by mass or more, and preferably 40% by mass or less, more preferably 35% by mass or less, further preferably 32.5% by mass or less.

[0264] <21>

[0265] The cleaning article according to any one of <1> to <20>, wherein the cleaning composition further contains, as component (g), one or more compounds selected from inorganic sulfates and inorganic halogen compounds.

[0266] <22>

[0267] The cleaning article according to the above <21>, wherein the component (g) is one or more compounds selected from the group consisting of sodium sulfate, magnesium sulfate, sodium chloride, and magnesium chloride.

[0268] <23>

[0269] The cleaning article as described in <21> or <22> above, wherein the cleaning composition contains the component (g) in an amount of preferably 2% by mass or more, more preferably 5% by mass or more, further preferably 10% by mass or more, further more preferably 15% by mass or more, and preferably 60% by mass or less, more preferably 50% by mass or less, further preferably 40% by mass or less, further more preferably 30% by mass or less.

[0270] <24>

[0271] The detergent article according to any one of <1> to <23>, wherein the detergent composition is a solid detergent composition, preferably one or more detergent compositions selected from powdered, granular, and particulate forms, and more preferably a powdered detergent composition.

[0272] <25>

[0273] The cleaning article according to any one of <1> to <24>, wherein the cleaning article is for fiber products, for hard surfaces, or for automatic dishwashing machines, and is preferably for fiber products.

[0274] <26>

[0275] A method for cleaning a textile product, comprising cleaning the textile product with a cleaning liquid prepared by mixing the cleaning agent according to any one of <1> to <25> above with water.

[0276] Example

[0277] <Ingredients>

[0278] In Examples and Comparative Examples, the following components were used.

[0279] [(a) Component: nonionic surfactant]

[0280] AEO (10): polyoxyethylene alkyl ether (alkyl group carbon number 12, average number of added ethylene oxide moles 10), Emulgen 110, manufactured by Kao Corporation

[0281] [Component (b): anionic surfactant]

[0282] (b1) Ingredients

[0283] LAS: Laurylbenzenesulfonic acid, Neopelex GS, manufactured by Kao Corporation

[0284] (b2) ingredient

[0285] Fatty acid: Fatty acid (carbon number 12 to 18), Lunac L-55, manufactured by Kao Corporation

[0286] [Component (c): cationic surfactant]

[0287] Benzalkonium chloride (alkyl dimethyl benzyl ammonium chloride, alkyl group carbon number: 12 to 16), Sanisol B-50, manufactured by Kao Corporation

[0288] [(d) ingredient: alkali]

[0289] Sodium carbonate: Light soda ash, bulk density 600g / L, average particle size 100μm, manufactured by Central Glass Co., Ltd.

[0290] [(e) ingredient]

[0291] Zeolite: Zeobuilder, model 4A, average particle size 3.5 μm, manufactured by ZEOBUILDER

[0292] Bentonite: Montmorillonite-type layered clay mineral "Odosolve K-400", median particle size 10μm, main component [Mg a Al b (Si2O5)4(OH)4] X- ·Me X+ , a=1, b=3, X=1, sodium content 1.6%, molar ratio [(Na+K+Li) / (Ca+Mg)]=2.1, manufactured by Kurosaki Shiratsu Co., Ltd.

[0293] [(g) Ingredients]

[0294] Sodium sulfate: Anhydrous neutral sodium sulfate, manufactured by Shikoku Chemical Co., Ltd.

[0295] Sodium chloride: NaCl N, manufactured by Nankai Salt Industry Co., Ltd.

[0296] [Component (h): polymer]

[0297] Polyacrylic acid: Sodium polyacrylate, weight average molecular weight 10,000, trade name Poiz 536, manufactured by Kao Corporation

[0298] [(i) Component: polymer]

[0299] Polyethylene glycol: PEG13000, weight average molecular weight 10,000, solid content 60%, manufactured by Mitsui Chemicals, Inc.

[0300] [(j) ingredient]

[0301] Enzyme: Protease, Savinase 8.0T, manufactured by Novozymes

[0302] <Preparation of Cleaning Composition>

[0303] The cleaning compositions shown in Table 1 were prepared using the above-mentioned ingredients by the following method.

[0304] Sodium sulfate, sodium carbonate, 40% sodium polyacrylate, sodium chloride, and 93 kg of zeolite were mixed in a mixing tank to prepare a slurry. This slurry was supplied to a spray-drying tower (countercurrent) using a pump. The slurry was sprayed from a pressure spray nozzle located near the top of the tower to obtain spray-dried granules. The spray-dried granules obtained were then mixed with the remaining sodium carbonate to form the composition shown in Table 1. The nonionic surfactant (a), polyethylene glycol, and the cationic surfactant (c) were mixed and then dry-neutralized using component (b). Bentonite was then added, followed by the remaining zeolite. Finally, an enzyme and fragrance were blended to form a powdered detergent composition.

[0305] In addition, the mass % of the ingredients other than component (j) in the table are values ​​based on the active ingredient, and the amount (mass %) of component (j) is expressed as a wet weight basis. In addition, the amount (mass %) of component (b) in the table is expressed after dry neutralization, i.e., the amount converted to the sodium salt.

[0306] <Cleaning Products Production>

[0307] Two water-soluble films (12 cm in length, 2 cm in width, 76 μm in thickness, M8685, manufactured by Monosol) made of polyvinyl alcohol were overlapped and a heat sealer (manufactured by FUJIIMPULSE CO., LTD.) was used. The sealing condition of the heat sealer was set to 8. The three sides of the water-soluble film were welded by the heat sealer with a width of 2 mm from the edge of each side to prepare a bag with only one side open. 15 g of each cleaning composition described in Table 1 was placed in the bag. Thereafter, the bag was welded and closed on one side by heat sealing to obtain a cleaning article in which each cleaning composition was packaged in a water-soluble film. The total area of ​​the water-soluble film in contact with the cleaning composition was 48 cm 2 Furthermore, the cleaning article of the present invention is not limited to the above-mentioned production method.

[0308] Cleaning performance evaluation

[0309] 1. Production of artificially contaminated cloth

[0310] The artificial soiled cloth used was obtained by gravure coating 100 mg of the artificial soil composed of the following composition on a 6 cm×6 cm wide cotton / polyester blended printed cloth (cotton / polyester ratio = 35 / 65, purchased from Gutou Store).

[0311] Artificial dirt

[0312] The composition containing the following A, B, C, D, and E was used as artificial soil. The mass % of each is the ratio of the artificial soil in the final composition, and the amount of B was adjusted so that the total amount would be 100 mass %.

[0313] A: Sample sebum stain (used in amounts such that the mass percentages of the artificial stain are: 0.44 mass% of lauric acid, 3.15 mass% of myristic acid, 2.35 mass% of pentadecanoic acid, 6.31 mass% of palmitic acid, 0.44 mass% of heptadecanoic acid, 1.60 mass% of stearic acid, 7.91 mass% of oleic acid, 2.22 mass% of n-hexadecyl palmitate, and 6.66 mass% of squalene)

[0314] B: Weigh 105 mg of calcium chloride dihydrate and dissolve it in distilled water to obtain 1,000 mL of hard water.

[0315] C: 1.98% by mass of egg white lecithin liquid crystal (11.37 g of arginine hydrochloride, 4.20 g of histidine, and 2.44 g of serine were dissolved in 80 mL of distilled water, the pH was adjusted to 5.0 with concentrated hydrochloric acid, and the solution was thoroughly mixed with egg white lecithin using a mixer to obtain an egg white lecithin liquid crystal)

[0316] D: Kanuma terracotta 8.11% by mass

[0317] E: Carbon black 0.025 mass%

[0318] 2. Cleanliness evaluation

[0319] The four artificially contaminated cloths prepared above were cleaned using a Terg-O-Tometer (manufactured by Ueshima, MS-8212) at 100 rpm for 10 minutes. The specific cleaning conditions were to dissolve one detergent article, each of the detergent compositions listed in Table 1, packaged in a water-soluble film, in 1 L of ion-exchanged water to prepare an aqueous detergent solution. Subsequently, 20 mL of this aqueous detergent solution was mixed with 580 mL of tap water to prepare a cleaning solution. The four artificially contaminated cloths and 600 mL of the above cleaning solution were placed in a Terg-O-Tometer and cleaned at 100 rpm for 10 minutes. The water temperature of each cleaning solution was 20°C.

[0320] After cleaning, the artificially soiled cloth was rinsed with tap water (20° C.) for 1 minute, then dehydrated for 3 minutes using a double-layer washing machine and then dried at 20° C. and 50% RH for 3 hours.

[0321] The cleaning rate (%) was calculated using the following formula (1), and the average value of the four pieces was determined. Furthermore, the reflectance at a wavelength of 550 nm of the original artificially soiled cloth and the artificially soiled cloth before and after cleaning was measured using a spectrocolorimeter (SE2000, manufactured by Nippon Denshoku Co., Ltd.). The results are shown in Table 1. A higher cleaning rate indicates better cleaning performance of the detergent.

[0322] Cleaning rate (%) = 100 × [(reflectivity of the artificially contaminated cloth after cleaning - reflectivity of the artificially contaminated cloth before cleaning) / (reflectivity of the original cloth - reflectivity of the artificially contaminated cloth before cleaning)] (1)

[0323] <Evaluation of antibacterial performance>

[0324] 1. Antibacterial test method

[0325] (1) Preparation of cloth used for antibacterial test

[0326] Place 30 g of cotton cloth (cotton #2003, manufactured by Yato Shoten) and 600 mL of the above cleaning solution in a Terg-O-Tometer. Repeat this cycle five times: cleaning at 85 rpm for 10 minutes and rinsing for 3 minutes. This serves as the test cloth. Use sterilized, boiled tap water.

[0327] (2) Antibacterial test

[0328] An antimicrobial test was conducted using Moraxella osloensis isolated from worn clothing in accordance with JIS L 1902. Specifically, the test was conducted as follows.

[0329] The test cloth prepared by the above method was cut into 2 cm squares, and the obtained test pieces (each piece had a mass of about 0.4 g) were used as specimens.

[0330] (i) Moraxella osloensis isolated from worn clothing was strip-cultured on a plate containing SCD-LP agar medium and incubated at 37°C for 24 hours. The culture was scraped with a platinum ear and placed in 10 mL of nutrient (NT) medium and pre-cultured at 37°C and 110 rpm for 24 hours. The concentration of the pre-cultured culture solution was estimated by spectrophotometry and the bacterial concentration was adjusted to approximately 1 × 10 8 Then, the bacterial concentration was adjusted to 1×10 5 / mL to prepare the test bacterial solution.

[0331] (ii) Use a pipette to accurately collect 0.2 mL of the test bacterial solution. Apply the test bacterial solution to several locations on each specimen or untreated standard cloth (JIS L 1902 standard cloth). Place the solution in a small glass vial and incubate at 37°C for 18 hours with the lid closed. Repeat the inoculation and incubation of the test bacterial solution multiple times for each specimen and standard cloth.

[0332] (iii) Randomly select five pieces of incubated standard cloth and five pieces of standard cloth immediately after contact. Add 20 mL of LP diluent for rinsing, close the lid, and stir with a test stirrer for 30 seconds to rinse the bacteria and measure the bacterial count. Randomly select five pieces of incubated specimens. Add 20 mL of LP diluent for rinsing to each specimen. Close the lid, stir with a test stirrer for 30 seconds to rinse the bacteria and measure the bacterial count.

[0333] The antibacterial activity value was calculated using the following formula. The results are shown in Table 1. A higher antibacterial activity value indicates higher antibacterial performance of the detergent article.

[0334] Antibacterial activity value = LogB-LogC

[0335] A: Average number of bacteria recovered from the standard cloth immediately after inoculation

[0336] B: Average number of bacteria recovered from the standard cloth after 18 hours of incubation

[0337] C: Average number of bacteria recovered from the sample after 18 hours of culture

[0338] The test must be established under the condition that LogB-LogA exceeds 1.5.

[0339] <Solubility Evaluation>

[0340] The solubility of each detergent article of Examples and Comparative Examples in Table 1 was evaluated based on the diameter of the dissolved residue of the detergent composition remaining after cleaning. The diameter of the dissolved residue of the detergent composition was measured by the following method.

[0341] Four sets of trousers (UNIQLO), four pairs of tracksuits (UNIQLO), four pairs of boxer briefs (UNIQLO), four pairs of socks (UNIQLO), four pairs of long-sleeved bottoms (Heattech, UNIQLO), and a cotton shirt (YG, GUNZE) were used to adjust the total weight to 8.0 kg. One of the aforementioned detergent items, packaged in a water-soluble film, was placed in a drum washing machine (NA-VG1000L, Panasonic). The prepared clothing was then added to the washing machine and cleaned using tap water (Wakayama tap water) at 5°C using a standard cycle: wash for 9 minutes, rinse once, and spin for 6 minutes.

[0342] After washing, all washed clothes were visually checked, and the dissolved residue of the detergent composition was recovered. The diameter (mm) of the recovered residue was measured using a vernier caliper.

[0343] Furthermore, the residual dissolution of the detergent article was evaluated based on the following indexes. The results are shown in Table 1. The higher the score, the better the solubility of the detergent composition and the detergent article.

[0344] [Solubility index]

[0345] 5: No dissolved residue at all

[0346] 4: One to five lumps of the cleaning composition, each measuring 1 mm or more and 5 mm or less, were observed.

[0347] 3: Six or more lumps of the cleaning agent composition having a size of 1 mm to 5 mm were observed.

[0348] 2: Lumps of the cleaning agent composition with a size of 5 mm to 20 mm were observed.

[0349] 1: Lumps of the cleaning agent composition of 20 mm or more were observed.

[0350]

Claims

1. A cleaning product, wherein The cleaning article comprises: a cleaning composition containing the following components (a), (b), (c), and (d), wherein the content of component (d) exceeds 5% by mass; and a water-soluble film for packaging the cleaning composition. (a) Ingredients: nonionic surfactant; (b) ingredient: anionic surfactant; (c) ingredient: cationic surfactant; (d) Ingredient: alkali agent.

2. The cleaning article according to claim 1, wherein The cleaning composition contains 1% by mass to 40% by mass of the component (a).

3. The cleaning article according to claim 1 or 2, wherein The cleaning composition contains 0.1% by mass to 10% by mass of the component (b).

4. The cleaning article according to any one of claims 1 to 3, wherein The component (b) contains a fatty acid or a salt thereof.

5. The cleaning article according to any one of claims 1 to 4, wherein Component (b) includes sodium fatty acid and sodium alkylbenzene sulfonate.

6. The cleaning article according to any one of claims 1 to 5, wherein The cleaning composition contains 0.5% by mass to 20% by mass of the component (c).

7. The cleaning article according to any one of claims 1 to 6, wherein In the cleaning composition, the mass ratio (c) / (b) of the content of the component (c) to the content of the component (b) is 0.1 to 5.

8. The cleaning article according to any one of claims 1 to 6, wherein In the cleaning composition, the mass ratio (c) / (b) of the content of the component (c) to the content of the component (b) is 0.4 or more and 1 or less.

9. The cleaning article according to any one of claims 1 to 8, wherein The cleaning composition contains more than 5% by mass and 50% by mass or less of the component (d).

10. The cleaning article according to any one of claims 1 to 9, wherein The acid precursor of the component (b) is sprayed into the component (d).

11. A method for cleaning fiber products, wherein: A textile product is cleaned using a cleaning liquid prepared by mixing the cleaning article according to any one of claims 1 to 10 with water.

Images