JP2023006976A - Cleaning method of target surface - Google Patents

Abstract

To provide a cleaning method of a target surface, which has excellent cleaning performance for lipid/protein composite stains adhered to the target surface by spreading a detergent composition on the target surface in a wet state.SOLUTION: Provided is a cleaning method of a target surface, comprising bringing a mixture of foam and liquid, formed from a detergent composition containing a surfactant by using a foam forming means, into contact with the target surface, where the foam forming means is used under conditions of forming a mixture of foam and liquid which satisfies the followings (1) and (2) from the detergent composition. (1) The specific volume of the foam after 20 seconds from foam formation is 2 ml/g to 11 ml/g. (2) The volume ratio of the foam phase and the liquid phase (foam phase/liquid phase) after 20 seconds from foam formation is 1 ml/ml to 100 ml/ml.SELECTED DRAWING: None

Description

The present invention relates to a method of cleaning a target surface.

A cleaning method in which a cleaning composition is sprayed onto a surface to be cleaned and the dirt is brought into contact with the cleaning composition is generally performed from the viewpoint of simplicity. In addition, a technique of supplying a cleaning agent in the form of foam is also actively used for the purpose of adhesion and retention of the cleaning agent to the target surface.
Patent Document 1 discloses a containerized cleaning agent for a bathroom in which a liquid cleaning agent is filled in a foam discharging container, wherein the foam discharging container holds the liquid cleaning agent at 20° C. at a temperature of 100 mL/20 g or more and 200 g of the liquid cleaning agent. A technique for a bottled cleaning agent for bathrooms that can be discharged as ~1000 mPa·s foam has been disclosed.
Patent Literature 2 discloses a technology for a liquid detergent composition for hard surfaces having an excellent foam specific volume, a method for cleaning hard surfaces, and a detergent article for hard surfaces contained in a spray container.
In Patent Document 3, (I) an initial foam specific volume (ml/g) of 20 or more and 50 or less, (II) 5 A technique is disclosed in which foam having a foam specific volume (ml/g) of 10 or less after minutes is brought into contact with the surface of tableware on which oil stains are adhered, and the surface is washed without applying mechanical force.

JP 2017-78130 A JP 2018-135489 A JP 2016-198765 A

In general, when a cleaning agent composition is brought into contact with a surface to which dirt has adhered, the detergent composition contained in the foam adheres to and stays on the surface, allowing the cleaning agent to stay in contact with the dirt for a long time, increasing the detergency. The ingredients are retained in the foam and are difficult to permeate into the dirt adhering to the target surface, so it is difficult to say that the cleaning ingredients are efficiently used. In addition, when the cleaning composition is sprayed with foam onto the target surface to which dirt has adhered, the foam cannot spread over the target surface, and the cleaning component contained in the foam can be used efficiently. Hard to say.
On the other hand, when the cleaning composition is brought into contact with a target surface to which dirt has adhered, the liquid flows down from the target surface, and the cleaning component contained in the liquid adheres to and retains the dirt. Therefore, the expected cleaning effect cannot be obtained.

INDUSTRIAL APPLICABILITY The present invention provides a method for cleaning a target surface, which is excellent in cleaning property of lipid/protein complex stains adhering to the target surface by spreading the cleaning composition on the target surface.

The present invention provides a foam formed from a cleaning composition (hereinafter referred to as the cleaning composition of the present invention) containing (a) a surfactant [hereinafter referred to as component (a)] using a foam forming means. A method of cleaning a target surface, comprising contacting the target surface with a mixture of
The present invention relates to a method for cleaning a target surface, wherein the foam forming means is used under conditions for forming a mixture of foam and liquid satisfying the following (1) and (2) from the cleaning composition.
(1) Foam specific volume 20 seconds after foam formation is 2 ml/g or more and 11 mL/g or less (2) Volume ratio of foam phase to liquid phase (foam phase/liquid phase) 20 seconds after foam formation is 1 ml/g ml or more and 100 ml/ml or less

INDUSTRIAL APPLICABILITY According to the present invention, there is provided a method for cleaning a target surface, which is excellent in detergency of lipid/protein complex stain adhering to the target surface by spreading the cleaning composition on the target surface.

[Method for cleaning target surface]
The reason why the method for cleaning a target surface of the present invention is excellent in the cleaning property of lipid/protein complex stains adhering to the target surface due to the cleaning agent composition wetting and spreading on the target surface is not necessarily clear, but is presumed as follows. be done.
It is known that the protein component adhering to the hard surface forms a complex with the lipid component to form a stronger stain, making it difficult to remove the stain in a short period of time without rubbing. This is because the lipid component inhibits the penetration of the cleaning component necessary for washing the protein into the interior of the protein, and the lipid component interacts with the molecules that make up the protein, which prevents the protein from swelling. It is speculated that
Therefore, if the detergent composition containing the surfactant, which is the component (a) of the present invention, can uniformly adhere to the lipid/protein complex stain, the component (a) can be added to the lipid/protein complex stain It is believed that the lipid component can be removed, protein swelling can be promoted, and complexed lipid/protein complex stains can be removed in a short period of time without rubbing.
However, in general, when a cleaning composition containing component (a) is sprayed using a trigger-type sprayer or the like, the foam formed from the cleaning composition has a high foaming property, and the lipid/protein complex attached to the target surface It is difficult to evenly apply the foam to the soil.
On the other hand, in the method for cleaning a target surface of the present invention, the detergent composition of the present invention containing component (a) is subjected to (1) specific volume of foam 20 seconds after foam formation and (2) foam formation after 20 seconds from foam formation. By using the conditions for forming a mixture of foam and liquid in which the volume ratio of the foam phase to the liquid phase (foam phase/liquid phase) is within a specific range 20 seconds after , the mixture of foam and liquid wets the target surface. By spreading, the cleaning agent composition, which is a mixture of foam and liquid, can be evenly applied to the lipid/protein complex dirt adhering to the target surface, and the cleaning effect of the component (a) is exhibited. It is considered to be excellent in cleansing properties for protein-complex stains.

The method for cleaning a target surface of the present invention uses a foam forming means under the conditions that the mixture of foam and liquid formed from the cleaning composition of the present invention satisfies the following (1) and (2).
(1) Foam specific volume 20 seconds after foam formation is 2 ml/g or more and 11 mL/g or less (2) Volume ratio of foam phase to liquid phase (foam phase/liquid phase) 20 seconds after foam formation is 1 ml/g ml or more and 100 ml/ml or less

In the method for cleaning a target surface of the present invention, the foam specific volume of the mixture of foam and liquid 20 seconds after foam formation is preferably 2 ml/g or more, from the viewpoint of wettability and cleaning performance for lipid/protein complex stains. is 2.3 ml/g or more, more preferably 2.5 ml/g or more, and from the viewpoint of wettability and cleaning performance for lipid/protein complex stains, 11 ml/g or less, preferably 10.5 ml/g or less, It is more preferably 10 ml/g or less, still more preferably 9.5 ml/g or less, and even more preferably 9 ml/g or less.

In the present invention, the foam specific volume of the mixture of foam and liquid 20 seconds after foam formation refers to the volume of foam 20 seconds after foam is formed by a foam forming means, that is, a trigger type sprayer or the like having a foam forming mechanism. and liquid mixture foam specific volume. More specifically, it can be measured by the following method.
The mass (g) of a 200 ml graduated cylinder is measured with a two-digit balance (a). The detergent composition of the present invention is discharged from a trigger-type sprayer having a foam-forming mechanism into a 200 ml graduated cylinder by pulling the trigger 10 times in the form of foam. Measure the mass (g) of the mixture of (b) with a two-digit balance, and measure the volume (ml) of the mixture of foam and liquid in the graduated cylinder (c). Calculate the foam specific volume of the foam-liquid mixture using the following formula: The measurement of foam specific volume shall be carried out in an environment control room adjusted to 20°C.
Foam specific volume of mixture of foam and liquid (ml/g) = (c)/{(b)-(a)}

In the method for cleaning a target surface of the present invention, the volume ratio of the foam phase to the liquid phase (foam phase/liquid phase) after 20 seconds from the formation of foam in the mixture of foam and liquid is determined by the wetting spreadability and the lipid/protein complex stain. From the viewpoint of cleaning performance, it should be 1 ml/ml or more, preferably 2 ml/ml or more, more preferably 3 ml/ml or more, and still more preferably 3.5 ml/ml or more, and wet and spreadability and washing performance for lipid/protein complex stains. From the viewpoint of More preferably 60 ml/ml or less, still more preferably 55 ml/ml or less, and even more preferably 50 ml/ml or less.

In the present invention, the volume ratio of the foam phase to the liquid phase (foam phase/liquid phase) after 20 seconds from foam formation in the mixture of foam and liquid refers to the foam-forming means, i.e., a trigger-type sprayer having a foam-forming mechanism. It refers to the volume ratio (foam phase/liquid phase) of the separated foam phase and liquid phase 20 seconds after the foam is formed. More specifically, it can be measured by the following method.
The detergent composition of the present invention is discharged into a 200 ml graduated cylinder from a trigger type sprayer having a foam forming mechanism in the form of foam by pulling the trigger 10 times. 20 seconds after the discharge, each volume (ml) of the foam phase and the liquid phase separated in the measuring cylinder is measured, and the volume ratio of the foam phase and the liquid phase (foam phase/liquid phase) is calculated. The volume ratio of the foam phase to the liquid phase (foam phase/liquid phase) is measured in an environment control room adjusted to 20°C.

The cleaning composition of the present invention, which is used in the method of cleaning a target surface of the present invention, will be described below.

<(a) component>
The detergent composition of the present invention contains a surfactant as component (a).
(a) Component surfactants include (a1) anionic surfactants (hereinafter referred to as component (a1)), (a2) amphoteric surfactants (hereinafter referred to as component (a2)), and (a3). ) nonionic surfactants (hereinafter referred to as component (a3)) and (a4) cationic surfactants (hereinafter referred to as component (a4)).
The detergent composition of the present invention should contain at least one component selected from components (a1), (a2), and (a4) from the viewpoint of wettability and cleaning performance for lipid/protein complex stains. is preferred, and it is more preferred to contain component (a1).

(a1) The anionic surfactant is an anionic surfactant having at least one hydrocarbon group and at least one group selected from the group consisting of a sulfonic acid group, a sulfate ester group and a carboxylic acid group. is mentioned. Examples of anionic surfactants include alkyl or alkenyl benzene sulfonic acids or their salts, polyoxyalkylene alkyl or alkenyl ether sulfates or their salts, alkyl or alkenyl sulfates or their salts, internal olefin sulfonic acids or their salts, and fatty acids. Or its salt etc. are mentioned.
From the viewpoint of cleaning performance against lipid/protein complex stains, the component (a1) includes alkyl or alkenyl sulfates or salts thereof, polyoxyalkylene alkyl or alkenyl ether sulfates or salts thereof, internal olefin sulfonic acids or salts thereof, and One or more selected from alkyl or alkenylbenzenesulfonic acids or salts thereof are preferred.
Salts of anionic surfactants are preferably alkali metal salts such as sodium salts and potassium salts.

The number of carbon atoms in the alkyl group or alkenyl group of the alkyl or alkenyl sulfate ester or salt thereof is preferably 8 or more, more preferably 10 or more, and preferably 24 or less, from the viewpoint of cleaning performance of lipid/protein complex stains. It is preferably 20 or less, more preferably 18 or less, even more preferably 16 or less, still more preferably 12 or less.

The number of carbon atoms in the alkyl group or alkenyl group of the polyoxyalkylene alkyl or alkenyl ether sulfate ester or salt thereof is preferably 8 or more, more preferably 10 or more, and preferably It is 24 or less, more preferably 20 or less, still more preferably 18 or less, still more preferably 16 or less. Moreover, the oxyalkylene group of the polyoxyalkylene alkyl or alkenyl ether sulfate ester or its salt is preferably an ethyleneoxy group. The average number of added moles of oxyalkylene groups in the polyoxyalkylene alkyl or alkenyl ether sulfate ester or salt thereof is preferably 0.5 or more, more preferably 1 or more, more preferably 2 or more, and preferably 5 or less, More preferably, it is 3 or less.

The number of carbon atoms in the internal olefin sulfonic acid or its salt is preferably 8 or more, more preferably 10 or more, still more preferably 12 or more, still more preferably 14 or more, from the viewpoint of cleaning performance of lipid/protein complex stains, and It is preferably 24 or less, more preferably 20 or less, still more preferably 18 or less.

The number of carbon atoms in the alkyl or alkenyl group of the alkyl or alkenylbenzenesulfonic acid or salt thereof is preferably 8 or more, more preferably 10 or more, and preferably 24 or less, from the viewpoint of cleaning performance of lipid/protein complex stains. It is more preferably 20 or less, still more preferably 18 or less, even more preferably 16 or less, still more preferably 14 or less.

(a2) Amphoteric surfactants include one or more surfactants selected from betaine surfactants and amine oxide surfactants. Component (a2) specifically includes one or more surfactants selected from sulfobetaines, carbobetaines and amine oxides.

As the sulfobetaine, N-alkyl-N,N-dimethyl-N-sulfopropylammonium sulfobetaine having an alkyl group preferably having 10 or more carbon atoms, preferably 18 or less, and more preferably 14 or less carbon atoms; N-alkyl-N,N-dimethyl-N-(2-hydroxysulfopropyl)ammonium sulfobetaine having a carbon number of preferably 10 or more, preferably 18 or less, more preferably 14 or less, and an alkanoyl group having a carbon number of preferably 10 or more, preferably 18 or less, more preferably 14 or less N-alkanoylaminopropyl-N,N-dimethyl-N-sulfopropylammonium sulfobetaine, the number of carbon atoms in the alkanoyl group is preferably 10 or more, and , preferably 18 or less, more preferably 14 or less N-alkanoylaminopropyl-N,N-dimethyl-N-(2-hydroxysulfopropyl)ammonium sulfobetaine.

Carbobetaines include N-alkyl-N,N-dimethyl-N-carboxymethylammonium betaine having an alkyl group with preferably 10 or more carbon atoms, preferably 18 or less, more preferably 14 or less carbon atoms, or the following general formula ( compounds represented by a21).

[In the formula, R ^21a represents an alkyl group or alkenyl group having 7 to 21 carbon atoms, R ^22a represents a propylene group, and R ^23a and R ^24a each independently represent an alkyl group having 1 to 3 carbon atoms. indicates ]

In general formula (a21), R ^21a is an alkyl group or alkenyl group having preferably 9 or more, more preferably 11 or more, and preferably 15 or less, more preferably 13 or less carbon atoms, a nonyl group, A decyl group, an undecyl group, a dodecyl group and a tridecyl group are preferred.
In general formula (a21), R ^23a and R ^24a are each independently preferably a methyl group.

As the amine oxide, compounds represented by the following general formula (a22) are suitable.

[In the formula, R ^25a represents a hydrocarbon group having 7 to 22 carbon atoms, preferably an alkyl group or an ^alkenyl group, more preferably an alkyl group ^; Represents an alkyl group of 3 or less. D represents a -NHC(=O)- group or -C(=O)NH- group, and E represents an alkylene group having 1 to 5 carbon atoms. m and p denote m=0 and p=0 or m=1 and p=1. ]

In the general formula (a22), when m = 1 and p = 1, R ^25a is preferably an alkyl group having 9 or more and 18 or less carbon atoms, more preferably 11 carbon atoms, from the viewpoint of cleaning performance. It is an alkyl group having at least 16 carbon atoms, more preferably an alkyl group having 11 to 14 carbon atoms, and still more preferably an alkyl group having 11 carbon atoms. When m = 0 and p = 0, R ^25a is preferably an alkyl group having 10 or more and 18 or less carbon atoms, more preferably an alkyl group having 12 or more and 16 or less carbon atoms, from the viewpoint of cleaning performance. , more preferably an alkyl group having 12 or more and 14 or less carbon atoms, and still more preferably an alkyl group having 12 carbon atoms. In the present invention m=0 and p=0 are preferred. From the viewpoint of cleaning performance, R ^26a and R ^27a are preferably a methyl group having 1 carbon atom.

(a3) Nonionic surfactants include polyoxyalkylene alkyl ethers having an alkyl group having 8 to 18 carbon atoms, polyoxyalkylene alkenyl ethers having an alkenyl group having 8 to 18 carbon atoms, and polyoxyalkylene alkenyl ethers having 8 to 18 carbon atoms. Polyoxyalkylene sorbitan fatty acid esters having the following fatty acid groups, alkyl glycosides having an alkyl group having 8 to 18 carbon atoms, alkyl polyglycosides having an alkyl group having 8 to 18 carbon atoms, and fatty acids having 8 to 18 carbon atoms sucrose fatty acid ester having a group, alkyl polyglyceryl ether having an alkyl group having 8 to 18 carbon atoms, and the like, and these can be used alone or in combination of two or more. The component (a3) is preferably a polyoxyethylene alkyl ether having an alkyl group having 8 to 18 carbon atoms and having an average number of added moles of ethylene oxide of 2 to 50.

The (a3) component is preferably a nonionic surfactant represented by the following general formula (a3).
R ^31a —O—[(C ₂ H ₄ O) _s (C ₃ H ₆ O) _t ]—H (c3)
[In the formula, R ^31a is an alkyl or alkenyl group having 8 or more, preferably 10 or more and 18 or less, preferably 16 or less, more preferably 14 or less carbon atoms. s and t are the average number of added moles, and s is 2 or more, preferably 3 or more, more preferably 5 or more, still more preferably 7 or more, and 50 or less, preferably 30 or less, more preferably 20 or less The number t is a number greater than or equal to 0, preferably greater than or equal to 1 and less than or equal to 5, preferably less than or equal to 3, and t may be zero. (C ₂ H ₄ O) and (C ₃ H ₆ O) may be random or block polymers. ]

(a4) Cationic surfactants include quaternary ammonium salt-type cationic surfactants. As the quaternary ammonium salt type cationic surfactant, one or two of the groups bonded to the nitrogen atom have 6 or more and 18 or less carbon atoms, preferably 8 or more and 14 or less, particularly preferably 10 or more and 12 or less. A hydrocarbon group, preferably an alkyl group, the remainder being an alkyl group having 1 to 3 carbon atoms, a hydroxyalkyl group having 1 to 3 carbon atoms, and an arylalkyl group (such as a benzyl group), preferably a methyl group or an ethyl group , or a quaternary ammonium salt-type cationic surfactant which is a group selected from the group consisting of a benzyl group.

From the viewpoint of wettability and cleaning performance for lipid/protein complex stains, the detergent composition of the present invention preferably contains component (a1) in component (a), which is an alkyl or alkenyl sulfate ester or a salt thereof; and polyoxyalkylene alkyl or alkenyl ether sulfates or salts thereof.

<(b) component>
The cleaning composition of the present invention can contain a foam modifier as component (b) from the viewpoint of improving the coverage when the cleaning composition is applied to a target surface.
(b) As the foam control agent of the component, (b1) a silicone antifoaming agent (hereinafter referred to as (b1) component) and (b2) a compound having a solubility parameter δ of 15.0 or more and 19.5 or less (hereinafter , (referred to as component (b2))).
The cleaning composition of the present invention may contain components (b1) and (b2) as components (b) from the viewpoint of improving the coverage when the cleaning composition is applied to a target surface. preferable.

The (b1) component silicone antifoaming agent includes those containing unmodified silicone oil as a main component and further containing one or more components selected from modified silicone and silica. Alternatively, an appropriate combination of components selected from these three components (including either or both of unmodified silicone oil and modified silicone) may be used.

The unmodified silicone oil has a molecular weight of 1,000 or more, preferably 3,000 or more, more preferably 5,000 or more, and 1,000,000 or less, preferably 500,000 or less, more preferably 250. ,000 or less and a viscosity at 25° C. of 10 mm ² /s or more, preferably 50 mm ² /s or more, more preferably 500 mm ² /s or more, still more preferably 1,000 mm ² /s or more, and 100,000 mm ² /s or less, preferably 50,000 mm ² /s or less, particularly preferably 40,000 mm ² /s or less.

Modified silicones include quaternary ammonium-modified dimethylpolysiloxane, amino-modified dimethylpolysiloxane, amide-modified dimethylpolysiloxane, epoxy-modified dimethylpolysiloxane, carboxy-modified dimethylpolysiloxane, polyoxyalkylene-modified dimethylpolysiloxane, and fluorine-modified dimethylpolysiloxane. One or more silicone compounds selected from

The amino-modified dimethylpolysiloxane has an amino equivalent (amino equivalent is molecular weight per nitrogen atom) of 1,500 g/mol or more, preferably 2,500 g/mol or more, more preferably 3,000 g/mol or more. , and 40,000 g/mol or less, preferably 20,000 g/mol or less, more preferably 10,000 g/mol or less.
Examples of polyoxyalkylene-modified dimethylpolysiloxane include compounds in which the amount of ethylene oxide and/or propylene oxide to be added is 3 mol % or more and 97 mol % or less based on dimethylsiloxane.

The (b1) component preferably contains unmodified silicone oil as a main component and further contains silica, from the viewpoint of coverage when the cleaning composition is applied to the target surface.

The (b2) component is a compound having a solubility parameter δ of 15.0 or more and 19.5 or less. From the viewpoint of the coverage when attached to the target surface, 15.0 or more, preferably 15.5 or more, more preferably 16.0 or more, still more preferably 16.5 or more, more preferably 17.0 or more, Further, compounds having a molecular weight of 19.5 or less, preferably 19.0 or less, more preferably 18.5 or less, more preferably 18.0 or less are included.
The solubility parameter δ for the component (b2) is δ = (ΔH/V), where ΔH (cal/mol) is the heat of vaporization per mole of the organic solvent and V (cm ³ mol) is the molar volume. A value defined by ^1/2 .
δ = (ΔH/V) ^1/2
δ; solubility parameter (sp value) [(J/cm ³ ) ^1/2 ]
ΔH; molar heat of vaporization V; molar volume

In addition, in obtaining the solubility parameter δ, the numerical value described in the following non-patent document shall be used.
Non-Patent Document 1: Barton, AFM; CRC Handbook of Solubility Parameters and Other Cohesive Parameters 2nd Ed., p102 (CRC Press). Polymer Handbook p ^VII528 .
Non-Patent Document 2: Fedors, RF; Polym. Eng. Sci., 1974, 14, (2), 147.
Non-Patent Document 3: Meusburger, KE; "PesticideFormulations: Innovations and Developments", Chapter 14 (Am. Chem. Soc.), 1988, 151.

The component (b2) may have an ether group, an amide group, an ester group, etc., as long as the solubility parameter δ is within the above range. Component (b2) includes, for example, one or more selected from hydrocarbons having a total carbon number of 6 or more and 30 or less, ester compounds having a carbon number of 8 or more and 24 or less, and aliphatic alcohols. In the present invention, an ester compound having 8 or more and 24 or less carbon atoms is preferred.

Specific examples of hydrocarbons include olefinic hydrocarbons, paraffinic hydrocarbons, aromatic hydrocarbons, and terpene hydrocarbons.

As the olefin hydrocarbon, linear olefin compounds such as hexene, octene, decene, dodecene and tetradecene, branched chain olefin compounds such as diisobutylene and triisobutylene, and cyclic olefin compounds such as cyclohexene and dicyclopentene can be used.

Paraffin hydrocarbons include linear paraffin compounds such as hexane, heptane, octane, nonane, decane, undecane, dodecane, tridecane, tetradecane, pentadecane, hexadecane, heptadecane and octadecane, isohexane, isoheptane, isooctane, isohexane, isododecane, isotridecan, Branched chain paraffinic compounds such as isotetradecane, isopentadecane, isohexadecane, isoheptadecane, isooctadecane, and cyclic paraffinic compounds such as cyclohexane can be used. As isoparaffin, light isoparaffin, heavy isoparaffin, liquid isoparaffin, and polyisobutene can be used.

Aromatic hydrocarbons include toluene, xylene, and cumene.

As the terpene compound, a monoterpene compound that is a dimer of isoprene, a sesquiterpene compound that is a trimer, and a diterpene compound that is a tetramer can be used. Specific preferred terpene compounds are α-pinene, β-pinene, camphene, limonene, dipentene, terpinolene, myrcene, β-caryophyllene and cedrene, with limonene, dipentene and terpinolene being particularly preferred.

The aliphatic alcohol includes one or more selected from dodecanol, tetradecanol, hexadecanol, octadecanol, eicosanol, and structural isomers of the above alcohols.

Component (b2) is preferably an ester compound having 6 to 24 carbon atoms. However, the solubility parameter δ must be within the above range.
The number of carbon atoms in the ester compound is preferably 8 or more, preferably 22 or less, and more preferably 20 or less, from the viewpoint of improving the coverage when the cleaning composition is applied to the target surface.
The ester compound is preferably an ester compound of a carboxylic acid and an alcohol, from the viewpoint of improving the coverage when the cleaning composition is applied to the target surface. More preferred are ester compounds with alcohols of lower valence. However, the carbon number of the ester compound satisfies the above range.

The carbon number of the starting carboxylic acid in the ester compound is preferably 2 or more, more preferably 6 or more, still more preferably 10 or more, and preferably 10 or more, from the viewpoint of coverage when the cleaning composition is applied to the target surface. is 21 or less, more preferably 20 or less, still more preferably 18 or less.
The starting carboxylic acid in the ester compound has a valence of 1 or higher and a valence of 3 or lower, preferably 2 or lower, from the viewpoint of coverage when the cleaning composition is applied to the target surface.
The starting carboxylic acid in the ester compound is not particularly limited, but is a carboxylic acid having a linear or branched alkyl group. Acetic acid, octanoic acid, propionic acid, butyric acid, isobutyric acid, valeric acid, pivalic acid, caproic acid, benzoic acid, 2-ethylhexanoic acid, enanthic acid, caprylic acid, pelargonic acid, capric acid, undecylic acid, lauric acid, Myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, α-linolenic acid, linoleic acid, palmitoleic acid, oleic acid, adipic acid, azelaic acid, palm oil composition fatty acid, coconut oil composition fatty acid, beef tallow fatty acid, sebacic acid , and trimesic acid. Among them, acetic acid, octanoic acid, 2-ethylhexanoic acid, enanthic acid, caprylic acid, pelargonic acid, capric acid, undecyl acid, lauric acid, One or more selected from myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, α-linolenic acid, linoleic acid, palmitoleic acid, oleic acid, adipic acid, and azelaic acid.

The carbon number of the raw material alcohol in the ester compound is preferably 1 or more, more preferably 2 or more, from the viewpoint of coverage when the cleaning composition is applied to the target surface. From the viewpoint of coverage when attached, preferably 20 or less, more preferably 18 or less, still more preferably 16 or less, even more preferably 12 or less, even more preferably 8 or less, even more preferably 6 or less, more More preferably 4 or less, still more preferably 3 or less.
The raw material alcohol in the ester compound is monovalent or higher and trivalent or lower, preferably divalent or lower, and more preferably monovalent, from the viewpoint of coverage when the cleaning composition is applied to the target surface.
The raw material alcohol in the ester compound is not particularly limited, but is an alcohol having a linear or branched alkyl group. Raw material alcohols include, for example, methanol, ethanol, propanol, isopropanol, butanol, isobutanol, pentanol, hexanol, heptanol, octanol, nonanol, decanol, dodecanol, tetradecanol, hexadecanol, octadecanol, eicosanol, and One or more selected from the structural isomers of the above alcohols may be mentioned, and from the viewpoint of coverage when the cleaning composition is applied to a target surface, methanol, ethanol, propanol, isopropanol, butanol, isobutanol, pentanol, One or more selected from hexanol, heptanol, octanol, and structural isomers of these alcohols are preferred.

The ester compound of a carboxylic acid and an alcohol is not particularly limited, but examples include an ester compound of a fatty acid having 6 to 24 carbon atoms and an alcohol. More specifically, isobutyl acetate (6 carbon atoms), hexane Ethyl acid (8 carbons), isobutyl isobutyrate (8 carbons), ethyl octanoate (10 carbons), hexyl benzoate (13 carbons), diisobutyl adipate (14 carbons), isopropyl myristate (14 carbons) 17), and ethyl oleate (20 carbon atoms).

The component (b2) is isobutyl acetate, ethyl hexanoate, isobutyl isobutyrate, ethyl octanoate, hexyl benzoate, diisobutyl adipate, and myristic acid, from the viewpoint of the coverage when the cleaning composition is applied to the target surface. One or more selected from isopropyl, octane, isopropyl palmitate, isopropyl stearate, limonene, 1-dodecanol, and ethyl oleate are preferable, and ethyl hexanoate, ethyl octanoate, isopropyl myristate, isobutyl acetate, and ethyl oleate More preferably one or more selected from among, and even more preferably one or more selected from ethyl octanoate and isopropyl myristate.
Component (b2) of the present invention is an ester compound having δ of 17.0 or more and 18.1 or less, and having 2 or more carbon atoms, from the viewpoint of the coverage when the cleaning composition is applied to the target surface. An ester compound of a monovalent fatty acid of 18 or less and an alcohol having 2 to 4 carbon atoms is preferred.

<(c) component>
The detergent composition of the present invention may contain a sequestering agent as the component (c) from the viewpoint of the ability to clean stains containing metal ions.
The sequestering agent is preferably one or more compounds selected from aminocarboxylic acid-type sequestering agents, hydroxycarboxylic acid-type sequestering agents, and hydroxykiphosphonic acid-type sequestering agents.

Examples of aminocarboxylic acid-type sequestering agents include, but are not limited to, ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic acid (NTA), iminodiacetic acid, diethylenetriaminepentaacetic acid (DTPA), N-hydroxyethyl-ethylenediaminetriacetic acid (HEDTA). ), methylglycine diacetic acid (MGDA), dihydroxyethylglycine (DHEG), hydroxyethyleneiminodiacetic acid (HIDA), aspartic acid diacetic acid (ASDA), glutamic acid diacetic acid (GLDA) and one or more selected from salts thereof is mentioned.
The hydroxycarboxylic acid-type sequestering agent is preferably a compound selected from aliphatic hydroxycarboxylic acids and salts thereof. Hydroxycarboxylic acids and salts thereof include compounds selected from malic acid, citric acid and salts thereof.
Hydroxyphosphonic acid-type sequestering agents include compounds selected from 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) and salts thereof.
Salts of the sequestering agent include alkali metal salts, ammonium salts, amine salts and the like. Alkali metal salts are preferred, and sodium or potassium salts are more preferred.

Component (c) is preferably an aminocarboxylic acid-type sequestering agent from the viewpoint of cleaning performance against stains containing metal ions, such as ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic acid (NTA), iminodiacetic acid, and diethylenetriaminepentaacetic acid. (DTPA), N-Hydroxyethyl-ethylenediaminetriacetic acid (HEDTA), Methylglycinediacetic acid (MGDA), Dihydroxyethylglycine (DHEG), Hydroxyethyleneiminodiacetic acid (HIDA), Aspartic acid diacetic acid (ASDA), Glutamic acid diacetic acid One or more selected from acetic acid (GLDA) and salts thereof can be mentioned. Component (c) is preferably one or more selected from ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, methylglycinediacetic acid, and salts thereof, from the viewpoint of cleaning performance of stains containing metal ions, and ethylenediaminetetraacetic acid or its Salt is more preferred.
Salts of component (c) include alkali metal salts, ammonium salts and amine salts. Alkali metal salts are preferred, and sodium or potassium salts are more preferred.

<(d) component>
The detergent composition of the present invention may contain a glycol-based solvent as the component (d) from the viewpoint of its ability to clean lipid/protein complex stains.
A glycol-based compound means that it belongs to either a compound having two hydroxyl groups or an ether compound in which one or both hydrogen atoms of the hydroxyl groups are substituted with another group. The ether compound is preferably an aliphatic ether compound. Moreover, an ether compound in which one hydrogen atom of the hydroxyl group of the glycol compound is substituted with another group is preferable.

Component (d) is preferably a glycol-based water-soluble solvent having 2 to 12 carbon atoms. Water-soluble means dissolving 5 g or more in 100 g of water at 20°C.
Component (d) preferably has an octanol/water partition coefficient (LogP) of 3.5 or less, more preferably 0.79 or less, preferably −5 or more, and more preferably −3 or more.

The total number of carbon atoms in component (d) is preferably 2 or more, more preferably 3 or more, more preferably 4 or more, still more preferably 5 or more, still more preferably 6 or more, from the viewpoint of cleaning performance against lipid/protein complex stains. and is preferably 12 or less, preferably 10 or less, and more preferably 8 or less from the viewpoint of cleaning performance for lipid/protein complex stains.

As component (d), ethylene glycol (2 carbon atoms), propylene glycol (3 carbon atoms), diethylene glycol (4 carbon atoms), and propylene glycol monomethyl ether (4 carbon atoms) are used from the viewpoint of cleaning performance against lipid/protein complex stains. ), isoprene glycol (5 carbon atoms), propylene glycol monoethyl ether (5 carbon atoms), propylene glycol monobutyl ether (7 carbon atoms), 3-methyl-3-methoxybutanol (6 carbon atoms), ethylene glycol monobutyl ether ( 6 carbon atoms), dipropylene glycol (6 carbon atoms), diethylene glycol monobutyl ether (8 carbon atoms), diethylene glycol monophenyl ether (10 carbon atoms), dibutylene diglycol (8 carbon atoms), and dipropylene glycol monobutyl ether (carbon atoms One or more selected from formula 10) can be mentioned.

Component (d) is preferably a glycol having 2 or 3 carbon atoms such as ethylene glycol, polyethylene glycol, propylene glycol, polypropylene glycol, polyether thereof, or monoalkyl ether thereof. The alkyl group of this monoalkyl ether preferably has from 1 to 4 carbon atoms, and is a methyl group, an ethyl group, various propyl groups, and various butyl groups. Various types include normal, iso, and tertiary.

As component (d), more preferably, from the viewpoint of cleaning performance of lipid/protein complex stains, propylene glycol (3 carbon atoms), propylene glycol monomethyl ether (4 carbon atoms), ethylene glycol monobutyl ether (6 carbon atoms), One or more selected from propylene glycol monobutyl ether (7 carbon atoms), diethylene glycol monobutyl ether (8 carbon atoms), diethylene glycol monophenyl ether (10 carbon atoms), and dipropylene glycol monobutyl ether (10 carbon atoms). It is preferable that diethylene glycol monobutyl ether (having 8 carbon atoms) is included as component (d).

<(e) component>
The detergent composition of the present invention can contain an alkanolamine as component (e) from the viewpoint of cleaning performance for lipid/protein complex stains.
Component (e) is not particularly limited, but includes alkyl mono- or dialkanolamines having 2 or 3 carbon atoms in the alkanol group or alkylene oxide adducts thereof (wherein the alkylene oxide has 2 or 3 carbon atoms). be done. Specific examples of component (e) include monoethanolamine, diethanolamine, triethanolamine, 1-amino-2-propanol, N-methylmonoethanolamine, N-methyldiethanolamine and N,N-dimethylmonoethanolamine. 1 or more selected compounds are preferably selected from monoethanolamine, diethanolamine, 1-amino-2-propanol, and N-methylmonoethanolamine from the viewpoint of cleaning performance of lipid/protein complex stains. more preferably one or more selected from monoethanolamine, diethanolamine, and 1-amino-2-propanol.

<Composition, etc.>
The detergent composition of the present invention preferably contains component (a) in an amount of 1% by mass or more, more preferably 2.5% by mass or more, and even more preferably 2.5% by mass or more, from the viewpoint of wettability and cleaning performance for lipid/protein complex stains. contains 4% by mass or more, and preferably 15% by mass or less, more preferably 13% by mass or less, even more preferably 10% by mass or less, and even more preferably 7% by mass or less.
In the present invention, when the component (a) contains the component (a1), the mass of the component (a1) is calculated on the assumption that sodium ions are counter ions. Also, when the component (a) contains the component (a4), the mass of the component (a4) is determined on the assumption that chloride ions are counter ions.

In the detergent composition of the present invention, the content of component (a1) in component (a) is preferably 20% by mass or more, more preferably 20% by mass or more, from the viewpoint of wettability and cleaning performance for lipid/protein complex stains. 30% by mass or more, more preferably 40% by mass or more, even more preferably 50% by mass or more, even more preferably 60% by mass or more, even more preferably 70% by mass or more, still more preferably 80% by mass or more, and more It is more preferably 90% by mass or more, and preferably 100% by mass or less, and may be 100% by mass.

When the cleaning composition of the present invention contains the component (b1) as the component (b), the component (b1) is preferably used from the viewpoint of coverage when the cleaning composition is applied to a target surface. is 0.1 ppm or more, more preferably 1 ppm or more, still more preferably 3 ppm or more, even more preferably 5 ppm or more, still more preferably 7 ppm or more, and preferably 99 ppm or less, more preferably 75 ppm or less, still more preferably 50 ppm or less contains.

When the detergent composition of the present invention contains component (b1) as component (b), the mass ratio of the content of component (a) to the content of component (b1) (a)/(b1) is preferably 101 or more, more preferably 333 or more, even more preferably 800 or more, even more preferably 900 or more, and even more preferably 1 ,000 or more, and preferably 1,500,000 or less, more preferably 130,000 or less, even more preferably 100,000 or less, even more preferably 80,000 or less, even more preferably 50,000 or less, and more More preferably 30,000 or less, still more preferably 20,000 or less, still more preferably 10,000 or less, and even more preferably 8,000 or less.

When the cleaning composition of the present invention contains the component (b2) as the component (b), the component (b2) is preferably used from the viewpoint of coverage when the cleaning composition is applied to a target surface. is 0.1% by mass or more, more preferably 0.2% by mass or more, still more preferably 0.3% by mass or more, and preferably 2.9% by mass or less, more preferably 2% by mass or less, even more preferably The content is 1% by mass or less, more preferably 0.8% by mass or less.

When the detergent composition of the present invention contains component (b2) as component (b), the mass ratio of the content of component (a) to the content of component (b2) (a)/(b2) is preferably 0.34 or more, more preferably 1.25 or more, even more preferably 4 or more, still more preferably 6 or more, from the viewpoint of the coverage when the cleaning composition is applied to the target surface. More preferably 8 or more, and preferably 150 or less, more preferably 65 or less, still more preferably 33 or less, still more preferably 30 or less, still more preferably 25 or less, still more preferably 20 or less, still more preferably 15 or less, more preferably 12 or less.

When the detergent composition of the present invention contains the component (c), the component (c) is preferably contained in an amount of 1% by mass or more, more preferably 1.5% by mass, from the viewpoint of the ability to clean stains containing metal ions. % by mass or more, more preferably 2% by mass or more, and preferably 10% by mass or less, more preferably 5% by mass or less, and even more preferably 3% by mass or less.
In addition, in the present invention, the mass of the component (c) is determined assuming that it is all sodium salts.

When the cleaning composition of the present invention contains component (d), the component (d) is preferably 1% by mass or more, more preferably 1.5% by mass, from the viewpoint of cleaning performance of lipid/protein complex stains. % or more, more preferably 2% by mass or more, even more preferably 4% by mass or more, and preferably 30% by mass or less, more preferably 20% by mass or less, even more preferably 10% by mass or less, and even more preferably 7% by mass. % by mass or less.

When the detergent composition of the present invention contains the component (e), the component (e) is preferably contained in an amount of 0.1% by mass or more, more preferably 0.1% by mass or more, from the viewpoint of cleaning performance of lipid/protein complex stains. 2% by mass or more, more preferably 0.3% by mass or more, and preferably 1.9% by mass or less, more preferably 1.5% by mass or less, even more preferably 1% by mass or less, and even more preferably 0.5% by mass or less. It contains 7% by mass or less.

In order to increase the added value of the product, the detergent composition of the present invention may optionally contain fragrances, pigments, preservatives, antioxidants, antifoaming agents, stabilizers, and the like (provided that (excluding the above components (a) to (e)).

The detergent composition of the present invention contains water. That is, the rest other than the components (a) to (e) and optional components is water. The detergent composition of the present invention preferably contains 50% by mass or more, more preferably 60% by mass or more, still more preferably 70% by mass or more, still more preferably 80% by mass or more, and preferably 99% by mass. % or less, more preferably 95 mass % or less. As water, it is preferable to use ion-exchanged water, sterilized ion-exchanged water, or the like.

The cleaning composition of the present invention preferably has a pH at 25° C. of 9 or more, more preferably 10 or more, still more preferably 10.5 or more, and preferably 10.5 or more, from the viewpoint of cleaning performance for lipid/protein complex stains. It is less than 12, more preferably 11.5 or less, still more preferably 11 or less.

The cleaning composition of the present invention preferably has a viscosity at 25° C. of 0.1 mPa·s or more, more preferably 0.5 mPa·s or more, from the viewpoint of coverage when the cleaning composition is applied to a target surface. s or more, more preferably 1 mPa·s or more, and preferably 50 mPa·s or less, more preferably 30 mPa·s or less, still more preferably 10 mPa·s or less.
The viscosity of the detergent composition is a value measured using a Brookfield viscometer (model number: TVB-10 manufactured by Toki Sangyo Co., Ltd., using a No. 19 rotor, 60 r/min or 1 r/min). . The temperature of the detergent composition is adjusted to 25±1° C. and measured.

<Washing method>
The present invention provides a method for cleaning a target surface, comprising contacting a target surface with a mixture of foam and liquid formed from the cleaning composition of the present invention using a foam-forming means, comprising:
A method for cleaning a target surface, wherein the foam forming means is used under conditions that form a mixture of foam and liquid that satisfies the above (1) and (2) from the cleaning composition.
The cleaning method of the present invention is a cleaning method in which the cleaning composition of the present invention is brought into contact with a target surface on which lipid/protein complex stains are adhered, and then left without applying (applying) an external force such as a mechanical force. is mentioned. In the present invention, in order to disperse and decompose lipid/protein complex stains, it is possible to contact the stain without using a flexible material such as a sponge or fingers, etc., and even if it is left as it is without applying external force such as mechanical force, it has a high cleaning effect. is obtained. This makes it ideal for cleaning hard-to-reach areas and hard-to-reach areas.
Leaving without applying an external force such as a mechanical force means, for example, not performing an intentional operation for cleaning other than contact with the composition. For example, it can be understood that the composition brought into contact naturally flows down the hard surface, or that vibrations not intended for cleaning are transmitted to the hard surface when left without applying an external force.
After standing, it is usually rinsed with water. When rinsing, an external force (physical force) may be applied by a hand or the like, or simply rinsed with a stream of water.

In the cleaning method of the present invention, a mixture of foam and liquid formed from the cleaning composition of the present invention using a foam forming means is preferably applied to the target surface from the viewpoint of cleaning performance of lipid/protein complex stains. is 0.0001 g/cm ² or more, more preferably 0.0005 g/cm ² or more, still more preferably 0.0007 g/cm ² or more, still more preferably 0.001 g/cm ² or more, and preferably 1 g/cm ² or less, more preferably 0.2 g/cm ² or less, still more preferably 0.1 g/cm ² or less, still more preferably 0.05 g/cm ² or less, and furthermore, can be applied or sprayed. preferable.

In the cleaning method of the present invention, the mixture of foam and liquid formed from the cleaning agent composition of the present invention using the foam forming means is preferably brought into contact with the target surface from the viewpoint of cleaning performance of lipid/protein complex stains. is 1 second or more, more preferably 10 seconds or more, still more preferably 20 seconds or more, still more preferably 30 seconds or more, and preferably 10 minutes or less, more preferably 5 minutes or less, still more preferably 3 minutes or less, and more More preferably, it is left for 1 minute or less. In this case, leaving may begin when the composition first contacts the target surface.
Note that the temperature at the time of leaving may be room temperature, for example, 10° C. or more and 30° C. or less.

Spraying or coating is preferred, and spraying is more preferred, as a method of bringing a mixture of foam and liquid formed from the detergent composition of the present invention using a foam-forming means onto the target surface.
The foam forming means can specifically use spray means. That is, it is preferable to use a detergent article obtained by filling a container (spray container) equipped with a sprayer with the detergent composition of the present invention.
The cleaning agent of the present invention is a cleaning agent obtained by filling a spray container with the cleaning agent composition of the present invention under conditions that form a mixture of foam and liquid that satisfies the above (1) and (2). Offer goods.
In the detergent article of the present invention, the matters described in the method for cleaning a target surface of the present invention and the detergent composition of the present invention can be appropriately applied.

Examples of the spray means include manual sprayers that do not use a propellant, such as trigger-type sprayers and pump-type sprayers, and aerosols that use a propellant.
The spray means is preferably a trigger-type sprayer having a foam-forming mechanism capable of spraying or applying the detergent composition of the present invention as a mixture of foam and liquid. A trigger type sprayer having a foam forming mechanism is preferably a direct pressure type or an accumulator type, more preferably an accumulator type.
As the spraying means, any known one that is generally commercially available can be used as long as it can be used under the conditions for forming a mixture of foam and liquid from the detergent composition of the present invention that satisfies the above (1) and (2). can be used.

When using a trigger-type sprayer equipped with a foam-forming mechanism, the detergent composition of the present invention is preferably 0.1 mL or more, more preferably 0.1 mL or more, more preferably, in one operation, from the viewpoint of cleaning performance for lipid/protein complex stains. is 0.3 mL or more, more preferably 0.5 mL or more, and preferably 5 mL or less, more preferably 4 mL or less, and even more preferably 3 mL or less.
That is, in one operation, the detergent composition of the present invention is preferably added in an amount of 0.1 g or more, more preferably 0.3 g or more, still more preferably 0.5 g, from the viewpoint of cleaning performance of lipid/protein complex stains. Above and preferably 5 g or less, more preferably 4 g or less, even more preferably 3 g or less is sprayed.

The target surface targeted by the cleaning method of the present invention is preferably a hard surface. Hard surfaces include bathrooms, bathtubs, basins, tiles, restrooms, basins, mirrors, kitchen sinks, countertops, plumbing, and the like. The cleaning method of the present invention is suitable for cleaning hard surfaces, particularly hard surfaces in bathrooms. Here, the term "bathroom" refers not only to the bathroom, but also to objects having hard surfaces such as bathtubs and basins that are present in the bathroom.

The material of the hard surface to be cleaned by the cleaning method of the present invention is preferably a hard surface material having a water contact angle of 30° or more, preferably 40° or more, and 120° or less, preferably 110° or less. . The material of the hard surface having a water contact angle in the above range is not particularly limited, but polyester resin, acrylic resin, fiber reinforced plastic (FRP) resin, acrylonitrile-butadiene-styrene copolymer (ABS) synthetic resin, polypropylene ( PP) resin, polycarbonate (PC) resin, stainless steel (SUS), aluminum, hard vinyl chloride (hard PVC) resin, soft vinyl chloride (soft PVC) resin, polyethylene terephthalate (PET) resin, and at least one selected from aluminum is mentioned.

Using the ingredients below, detergent compositions shown in Tables 1 and 2 were prepared, and the following items were evaluated. Tables 1 and 2 show the results. The detergent compositions in Tables 1 and 2 were prepared by adding components (a) to (e) in the amounts shown in the tables and dissolving them at room temperature (25°C). After blending, the pH was adjusted to Tables 1 and 2 using sodium hydroxide and/or hydrochloric acid. In addition, pH was measured by the glass electrode method. In addition, mass % of the compounding ingredients in Tables 1 and 2 are all numerical values based on effective ingredients. The amount of component (b1) in Tables 1 and 2 is expressed in ppm.

<Ingredients>
(a) Component Emal 2F-HP: sodium lauryl sulfate, component (a1), manufactured by Kao Corporation Quaternary ammonium salt: a mixture of dimethyldecylbenzylammonium chloride and dimethyldodecylbenzylammonium chloride (mass ratio 90/10)
・Amphitol 20AB: Lauramidopropyl betaine, component (a2), manufactured by Kao Corporation ・Amphitol 20HD: Lauryl hydroxysulfobetaine, component (a2), manufactured by Kao Corporation ・Amphitol 20N: Lauryldimethylamine oxide, (a2 ) component, manufactured by Kao Corporation Emulgen 109P: polyoxyethylene lauryl ether, component (a3), manufactured by Kao Corporation

(b) component ・DOWSIL DK Q1-1247 Antifoam: mixture of dimethylsiloxane/silica reaction product and other additives, component (b1), Dow Chemical Japan Co., Ltd. ・DOWSIL AC8066: dimethylsiloxane/silica Mixture of reaction product and treated amorphous silica, component (b1), manufactured by Dow Chemical Japan Co., Ltd. DOWSIL 1315 Antifoam Concentrate: dimethylsiloxane/silica reaction product, component (b1), Dow Chemical Japan Co., Ltd. KF-640: Polyether-modified silicone oil, component (b1), Shin-Etsu Chemical Co., Ltd. Ethyl octanoate: carbon number 10, δ17.3, component (b2), Tokyo Chemical Industry Co., Ltd. Isopropyl myristate: Carbon number 17, δ17.0, component (b2), manufactured by Tokyo Chemical Industry Co., Ltd., isobutyl acetate, carbon number 6, δ17.7, component (b2), manufactured by Tokyo Chemical Industry Co., Ltd., hexane Ethyl acid: 8 carbon atoms, δ17.5, component (b2), manufactured by Tokyo Chemical Industry Co., Ltd. Diisobutyl adipate: 16 carbon atoms, δ18.2, component (b2), manufactured by Tokyo Chemical Industry Co., Ltd., olein Ethyl acid: 20 carbon atoms, δ18.1, component (b2), manufactured by Tokyo Chemical Industry Co., Ltd. Octane: 8 carbon atoms, δ15.6, component (b2), manufactured by Fujifilm Wako Pure Chemical Industries, Ltd., limonene : Carbon number: 10, δ17.4, component (b2), manufactured by Fuji Film Wako Pure Chemical Industries, Ltd. 1-dodecanol: Carbon number: 12, δ19.2, component (b2), manufactured by Kao Corporation

(c) Component EDTA-4Na: Sodium ethylenediaminetetraacetate (d) Component BDG: Diethylene glycol monobutyl ether, Nippon Emulsifier Co., Ltd. (e) Component Monoethanolamine

(1) Preparation of spray The detergent compositions shown in Tables 1 and 2 were filled into spray containers having A to H below, which are trigger-type sprayers equipped with a foam-forming mechanism, to prepare sprays.
- A: Bath Magiclean foaming spray (regular), Lot. K0412670, manufactured by Kao Corporation B: Styling mist with flare fragrance, Lot. WO263170, manufactured by Kao Corporation, C: Bath look spray, Lot. 161205B2B, manufactured by Lion Corporation D: Look Plus Bathtub Cleansing, Lot. 200827C11A, manufactured by Lion Corporation E: for ultra hard cleaner bath, Lot. 2102091, manufactured by Rinrei Co., Ltd. F: scrubbing bubble bath-free, Lot. BW241D, manufactured by Johnson Co., Ltd. G: Top value bath detergent foam spray, Lot. 201904179, Aeon Co., Ltd. H: Style Care Clothing Mist, Lot. W0261050, manufactured by Kao Corporation

(2) Measurement of Foam Specific Volume The mass (g) of a 200 ml plastic graduated cylinder with an inner diameter of 3.7 cm was measured with a balance with lower two digits (a). From each spray, the detergent composition in Tables 1 and 2 was discharged into a 200 ml graduated cylinder by pulling the trigger 10 times in the form of foam. After 20 seconds from the discharge, the mass (g ) was measured with a two-digit balance (b), and the volume (ml) of the foam-liquid mixture in the graduated cylinder was measured (c). The foam specific volume of the mixture of foam and liquid was calculated using the following formula. The foam specific volume was measured in an environment control room adjusted to 20°C. Tables 1 and 2 show the results.
Foam specific volume of mixture of foam and liquid (ml/g) = (c)/{(b)-(a)}

(3) Measurement of the volume ratio of the foam phase to the liquid phase (foam phase/liquid phase) From each spray, the detergent compositions shown in Tables 1 and 2 were placed in a plastic 200 ml graduated cylinder with an inner diameter of 3.7 cm, and the trigger was applied 10 times. It was pulled and foamed out. 20 seconds after the discharge, each volume (ml) of the foam phase and the liquid phase separated in the measuring cylinder was measured, and the volume ratio (foam phase/liquid phase) (ml/ml) of the foam phase and the liquid phase was calculated. . The volume ratio of the foam phase to the liquid phase (foam phase/liquid phase) was measured in an environment control room adjusted to 20°C. Tables 1 and 2 show the results.

(4) Measurement of Coverage At a distance of 20 cm from the side of the bathtub, 1 g of the detergent composition shown in Tables 1 and 2 was discharged onto the width of the side of 40 cm from each spray. 20 seconds after ejection, transfer the foam that spreads on the side and the part where the liquid adheres to two places using water-sensitive paper of 2.5 cm × 15 cm (13 cm from each end of 40 cm width) and copy. An image was captured with a machine, binarized with ImageJ, and the ratio of the area where bubbles and liquid adhered was calculated and used as the coverage rate. Tables 1 and 2 show the results of calculating the average coverage of the two transfer locations.

(5) Lipid/Protein Composite Dirt Washing Performance Evaluation A plurality of PVC plates (manufactured by Engineering Test Service Co., Ltd., 80 mm×210 mm×1 mm in shape) were fixed to the draft of a bathtub filled with hot water at 40° C. Four men took turns bathing (10 minutes each), and the PVC boards with sebum (lipid/protein complex stains) adhered to them after bathing were collected and used for cleaning evaluation. About 1 g of the cleaning agent composition shown in Tables 1 and 2 was sprayed from each spray onto the soiled part of the PVC board, left at 25°C for 20 seconds, then washed with water, and any 5 parts of the PVC board were cleaned by touch according to the following criteria. The performance was evaluated and the average value was calculated. Tables 1 and 2 show the results.
5: Residual dirt is not felt.
4: Remaining dirt is slightly felt.
3: A little residual dirt is felt.
2: Remaining dirt is felt.
1: It is felt that the dirt is not removed. ,.

Claims (13)

(a) Cleaning of a target surface by contacting the target surface with a mixture of foam and liquid formed by using a foam-forming means from a detergent composition containing a surfactant [hereinafter referred to as component (a)]. a method,
A method for cleaning a target surface, wherein the foam-forming means is used under conditions that form a mixture of foam and liquid that satisfies the following (1) and (2) from the cleaning composition.
(1) Foam specific volume 20 seconds after foam formation is 2 ml/g or more and 11 mL/g or less (2) Volume ratio of foam phase to liquid phase (foam phase/liquid phase) 20 seconds after foam formation is 1 ml/g ml or more and 100 ml/ml or less (a) component is at least one selected from (a1) anionic surfactants, (a2) amphoteric surfactants, (a3) nonionic surfactants, and (a4) cationic surfactants; 2. The method of cleaning a target surface of claim 1, wherein the method comprises: The method for cleaning a target surface according to claim 1 or 2, wherein the cleaning composition contains 0.1% by mass or more and 20% by mass or less of component (a). 4. The method for cleaning a target surface according to any one of claims 1 to 3, wherein the cleaning composition further contains (b) a foam control agent [hereinafter referred to as component (b)]. Component (b) consists of (b1) a silicone antifoaming agent (hereinafter referred to as component (b1)) and (b2) a compound having a solubility parameter δ of 15.0 to 19.5 (hereinafter referred to as component (b2) 5. The method for cleaning a target surface according to claim 4, wherein the cleaning method is one or more selected from ). The method for cleaning a target surface according to claim 5, wherein the cleaning composition contains 0.1 ppm or more and less than 100 ppm of the component (b1). The method for cleaning a target surface according to claim 5 or 6, wherein the cleaning composition contains 0.1% by mass or more and less than 3% by mass of the component (b2). The method for cleaning a target surface according to any one of claims 1 to 7, wherein the mixture of foam and liquid is brought into contact with the target surface at a rate of 0.0001 g/cm ² or more and 1 g/cm ² or less. A method for cleaning a target surface according to any one of claims 1 to 8, wherein the mixture of foam and liquid is brought into contact with the target surface and left without applying external force, followed by rinsing with water. The method for cleaning a target surface according to any one of claims 1 to 9, wherein the foam forming means is a trigger-type sprayer having a foam forming mechanism. 11. The method of cleaning a target surface according to claim 10, wherein the trigger sprayer is an accumulator sprayer. A method for cleaning a target surface according to any one of claims 1 to 11, wherein the target surface is a hard surface. A method for cleaning a target surface according to any preceding claim, wherein the target surface is a bathroom hard surface.