Cleaning composition

Abstract

To provide a detergent composition that suppresses the disintegration of a silica capsule containing a functional agent adsorbed onto a fiber product due to inter-fiber friction when the fiber product is cleaned, a method for cleaning a fiber product, and a kit for cleaning liquid.SOLUTION: A detergent composition includes the following component (A), component (B), and water. The component (A) is a functional agent-containing silica capsule. The component (B) is a nonionic polymer (excluding one contained in the silica capsule of component (A)).SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a cleaning composition containing capsules encapsulating a functional agent. [Background technology]

[0002] Functional agents such as fragrances, sensates, moisturizers, and disinfectants are incorporated into products for a variety of applications. For example, fragrances are used in products such as fabric softeners, laundry detergents, and body detergents to scent the products themselves, clothing, and the body. In such cases, it is necessary to maintain the fragrance stably so that the scent is not lost within the product. In order to prolong the effects of such functional agents, attempts have been made to encapsulate the functional agents in microcapsules and incorporate them into products. Furthermore, conventional microcapsules with wall materials made of resins such as melamine may be classified as microplastics due to future rule changes based on growing social environmental awareness, raising concerns about their environmental impact.On the other hand, silica capsules, whose wall material is an inorganic compound, do not qualify as microplastics, and if they can be incorporated into products, it is expected that they will reduce the environmental impact.

[0003] Patent Document 1 discloses microcapsules with an average particle size of 0.5 μm or more and 50 μm or less, which are obtained by a predetermined manufacturing method and have a core made of one or more organic compounds, a first shell that encapsulates the core and contains silica as a constituent component, and a second shell that encapsulates the first shell and contains silica as a constituent component.

[0004] Patent Document 2 discloses an aqueous liquid detergent and cleaning agent containing a surfactant and other common components of detergents and cleaning agents, the agent containing at least one capsule, the capsule containing an active ingredient, aluminum silicate, and silica in a matrix, the aluminum silicate and silica being present in a ratio of 1:10 to 10:1.

[0005] Patent Document 3 discloses a fragrance carrier system containing an encapsulated fragrance composition, wherein the fragrance composition contains an emulsion of a fragrance compound in an aqueous medium and is encapsulated in a shell containing a silicon-containing material, the shell having an average diameter size of less than 30 micrometers, and a surfactant composition containing the fragrance carrier system. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-128762 [Patent Document 2] Special Publication No. 2009-504812 [Patent Document 3] Special Publication No. 2011-517323 Summary of the Invention [Problem to be solved by the invention]

[0007] The inventors have discovered that when washing textile products, silica capsules containing functional agents adsorbed to the textile products break down due to friction between the fibers, resulting in the problem that the effectiveness of the silica capsules containing the functional agents (e.g., the release of the fragrance contained in the silica capsules) cannot be achieved when the textile products are used (e.g., when the clothing is worn).

[0008] That is, the present invention provides a detergent composition, a method for cleaning textile products, and a cleaning solution kit that suppress the collapse of silica capsules encapsulating a functional agent adsorbed on textile products due to friction between fibers when the textile products are washed. [Means for solving the problem]

[0009] The present invention relates to a detergent composition containing the following components (A) and (B), and water. (A) Ingredient: Silica capsules containing functional agents Component (B): Nonionic polymer (excluding the one encapsulated in silica capsules of component (A))

[0010] The present invention also relates to a method for washing textile products, which comprises washing textile products with a cleaning liquid obtained by mixing the detergent composition of the present invention with water, and then rinsing the textile products with water.

[0011] The present invention also relates to a cleaning solution kit comprising a first agent containing the component (A) and a second agent containing the component (B). [Effects of the Invention]

[0012] According to the present invention, there are provided a detergent composition, a method for cleaning textile products, and a cleaning solution kit, which suppress the collapse of silica capsules encapsulating a functional agent adsorbed on textile products due to friction between fibers when the textile products are washed. DETAILED DESCRIPTION OF THE INVENTION

[0013] The reason why the detergent composition, textile product cleaning method, and cleaning solution kit of the present invention suppress the disintegration of silica capsules encapsulating functional agents adsorbed on textile products due to interfiber friction during textile product washing is not entirely clear, but is presumed to be as follows: During washing, friction between fibers applies a certain mechanical force to silica capsules encapsulating functional agents present nearby, and it is presumed that when the mechanical force due to friction exceeds the strength of the silica capsules, the capsules will disintegrate. On the other hand, when silica capsules encapsulating functional agents of component (A) and nonionic polymers of component (B) coexist, component (B) provides a lubricating effect between the fibers, thereby reducing the frictional force between the fibers, and as a result, it is presumed that the disintegration of silica capsules of component (A) is suppressed.

[0014] [Cleaning composition] <Component (A)> The detergent composition of the present invention contains functional agent-encapsulating silica capsules as component (A). Examples of functional agent-containing silica capsules of component (A) include those having a shell containing silica as a constituent component and a core containing a functional agent inside the shell.

[0015] (shell) Component (A) may have a shell containing silica as a constituent component. The shell of component (A) may be composed of silica as a constituent component in part or substantially in its entirety. From the viewpoint of preventing the functional agent-encapsulated silica capsules from collapsing due to fiber friction, the silica is preferably produced from raw silica, which generates a silanol compound through hydrolysis of alkoxysilane or the like. From the viewpoint of preventing the functional agent-encapsulated silica capsules from collapsing due to fiber friction, the shell of component (A) of the present invention is preferably formed by a sol-gel reaction using an alkoxysilane as a precursor. In the present invention, the term "sol-gel reaction" refers to a reaction in which an alkoxysilane undergoes hydrolysis and polycondensation to form silica, a constituent component of the shell, through a sol and gel state. Specifically, for example, tetraalkoxysilane is hydrolyzed, and the silanol compound undergoes a dehydration condensation reaction and a dealcoholization condensation reaction to generate a siloxane oligomer, and the dehydration condensation reaction further progresses to form silica.

[0016] The raw silica may be, for example, at least one selected from the group consisting of silicon tetrachloride, tetraalkoxysilane, alkylalkoxysilane, water glass, and metal silicate. Among them, tetraalkoxysilane and alkylalkoxysilane are preferred, and tetraalkoxysilane is more preferred, from the viewpoint of suppressing the collapse of the functional agent-encapsulating silica capsules due to fiber friction.

[0017] Specific examples of tetraalkoxysilane include tetramethoxysilane, tetraethoxysilane, tetrapropoxysilane, etc. From the viewpoint of suppressing the collapse of the functional agent-encapsulating silica capsules due to fiber friction, tetramethoxysilane and tetraethoxysilane are preferred, and tetraethoxysilane is more preferred. Specific examples of alkylalkoxysilanes include methyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, dimethyldimethoxysilane, methylphenyldimethoxysilane, dimethyldiethoxysilane, diphenyldiethoxysilane, methylphenyldiethoxysilane, ethylphenyldimethoxysilane, diethyldiethoxysilane, ethylphenyldiethoxysilane, trimethylmethoxysilane, trimethylethoxysilane, dimethylphenylethoxysilane, triethylmethoxysilane, and triethylethoxysilane. These may be used alone or in combination of two or more. Condensates thereof may also be used.

[0018] In addition, the shell of the silica capsule of the present invention may contain an inorganic polymer other than silica as a constituent component, as long as the effect of the present invention is not impaired. In the present invention, the inorganic polymer refers to a polymer containing an inorganic element. Examples of the inorganic polymer include a polymer consisting only of inorganic elements, a polymer whose main chain is composed only of inorganic elements and has an organic group as a side chain or substituent, and the like. From the viewpoint of preventing the functional agent-containing silica capsules from collapsing due to fiber friction, the inorganic polymer is preferably a metal oxide containing a metal element or a semimetal element, and more preferably a metal alkoxide [M(OR) x The polymer is formed by a reaction similar to the sol-gel reaction of silica using the precursor M, where M is a metal or semimetal element, and R is a hydrocarbon group. Examples of metal or semimetal elements constituting the metal alkoxide include titanium, zirconium, aluminum, and zinc.

[0019] The shell may have a first shell and a second shell, and component (A) may have a first shell encapsulating a core containing one or more functional agents and a second shell encapsulating the first shell. Furthermore, component (A) of the present invention may have a third shell made of an organic polymer compound in contact with the second shell. Such a multi-layer shell can retain functional agents such as fragrances for a long period of time and is preferred from the viewpoint of preventing disintegration of the functional agent-encapsulated silica capsules due to fiber friction.

[0020] The thickness of the shell (the first shell when the first and second shells are present) is preferably 5 nm or more, and preferably 20 nm or less, more preferably 15 nm or less, from the viewpoint of preventing the functional agent-containing silica capsules from collapsing due to fiber friction. Also, from the viewpoint of preventing the functional agent-containing silica capsules from collapsing due to fiber friction, the shell (first shell) is preferably a dense layer with as few pores as possible, in order to maintain the encapsulated functional agent for a long period of time.

[0021] When component (A) has a second shell, the thickness of the second shell is preferably 10 nm or more, more preferably 20 nm or more, and preferably 100 nm or less, more preferably 80 nm or less, from the viewpoint of suppressing the collapse of the functional agent-encapsulated silica capsules due to fiber friction. From the viewpoint of suppressing the collapse of the functional agent-encapsulated silica capsules due to fiber friction, the second shell preferably has a mesoporous structure, which has a high-order structure in which silica is present not only in the direction along the interface with the first shell but also in the thickness direction. Here, the "mesoporous structure" in the second shell refers to a structure in which the diameter of the pores (so-called mesopores) present in the structure is preferably greater than 2 nm, more preferably 10 nm or more, even more preferably 30 nm or more, from the viewpoint of suppressing the collapse of the functional agent-encapsulating silica capsules due to fiber friction, and is preferably 50 nm or less, more preferably 45 nm or less, even more preferably 40 nm or less. Since the second shell has a mesoporous structure, component (A) has high mechanical strength.

[0022] The average thickness of the first and second shells of component (A) and the pore diameters of the first and second shells can be measured by observation with a transmission electron microscope (TEM). Specifically, the thicknesses of the first and second shells and the pore diameters of the first and second shells are measured on photographs under a transmission electron microscope. This procedure is repeated five times with the field of view changed. The thicknesses of the first and second shells and the distribution of pore diameters are determined from the obtained data. The magnification of the transmission electron microscope is typically 10,000 to 100,000 times, but this can be adjusted appropriately depending on the size of component (A). Here, a transmission electron microscope (TEM) such as the "JEM-2100" (manufactured by JEOL Ltd.) can be used.

[0023] (core) The core of the component (A) of the present invention contains one or more functional agents. The functional agent may be, for example, an oil-soluble liquid. When a fragrance is used as the functional agent, the component (A) encapsulates the fragrance inside the shell, and when the shell is ruptured, the fragrance is released and emits a fragrance.

[0024] Examples of functional agents include one or more selected from fragrances, fragrance precursors, oils, antioxidants, cooling agents, warming agents, antibacterial agents, dyes, pigments, UV absorbers, silicones, solvents, and oil-soluble polymers, and one or more selected from fragrances, fragrance precursors, oils, antioxidants, cooling agents, warming agents, antibacterial agents, UV absorbers, and solvents, and one or more selected from fragrances and fragrance precursors.Functional agents may also be skin care ingredients such as moisturizers, cosmetic oils, preservatives, antioxidants, insecticides, and insect repellents.

[0025] Examples of fragrances include γ-undecalactone, 2-cyclohexylidene-2-phenylacetonitrile, damascenone, δ-damascone, α-methyl-β-(pt-butylphenyl)-propionaldehyde, β-ionone, myrrh aldehyde, ethyl tricyclo[5.2.1.0-2,6]decane-2-carboxylate, citronellol, geraniol, α-ionone, patchouli alcohol, 6,7-dihydro-1,1,2,3,3-pentamethyl-4(5H)-indanone, methyl Dihydrojasmonate, hexyl cinnamic aldehyde, amyl cinnamic aldehyde, allylcyclohexyl propionate, dimethylbenzylcarbinyl butyrate, tricyclodecenyl propionate, amyl salicylate, γ-methyl ionone, α-damascone, β-damascone, nerolin yarayara, phenylhexanol, 2-methyl-4-(2,2,3-trimethyl-3-cyclopenten-1-yl)-2-buten-1-ol, dodecahydro-3a,6,6,9a-tetramethyl Naphtho[2,1-b]furan, γ-nonalactone, methyl β-naphthyl ketone, eugenol, lyral, dimethylbenzylcarbinyl acetate, iso-damascone, 2-cyclohexylidene-2-phenylacetonitrile, γ-decalactone, α-methyl-3,4-methylenedioxyhydrocinnamic aldehyde, 7-methyl-3,5-dihydro-2H-benzodioxepinone, tricyclodecenyl acetate (tricyclodecenyl acetate), tricyclodecenyl propionate, 2-pentenyl benzoate Allyl ethyloxyglycolate, 1-(2-tert-butylcyclohexyloxy)-2-butanol, citronellyloxyacetaldehyde, indole, 4-methyl-3-decen-5-ol, para-menthan-8-thiol-3-one, 3-(para-tert-butylphenyl)-propanal, ethyl cinnamate, 5-methyl-3-heptanone oxime, methyl anthranilate, terpineol, β-caryophyllene, citronellyl acetate, geranyl acetate, neryl acetate, p, t-butylcyclohexyl acetate, o, t-butylcyclohexyl acetate, tetrahydrogeraniol, 2-isobutyl-4-hydroxy-4-methyltetrahydropyranol (Florosa), α-dynascone, cis-jasmone, bicyclo[3.2.1) Octan-8-one-1,5-dimethyl-oxime, 2,4-dimethyl-4,4α,5,9β-tetrahydroindeno[1,2-d]-m-dioxine, 3-(para-ethylphenyl)-2,2-dimethylpropanal, ethyl-2-tert-butylcyclohexyl-carbonate, hexyl benzoate, 4-acetoxy-3-amyltetrahydropyran, dodecyl aldehyde, dihydro-β-ionone, methyl cyclooctyl carbonate, methyl Ethyl phenylglycidate, isoeugenol, diphenyl oxide, 2,2,5-trimethyl-5-pentylcyclopentanone, thymol, nerolin bromeliad, 5,6-dimethyl-8-isopropenyl, bicyclo[4,4,0]-1-decen-3-one, 3-(4-isopropylphenyl)-propanal, 4-isopropylcyclohexanemethanol, methyl methylanthranilate, dodecanenitrile, 3-dodecenal, octanal, nonanal , decanal, lilial, p,t-butylhydrocinnamic aldehyde, dimethyltetrahydrobenzaldehyde, hexyl acetate, linalyl acetate, terpinyl acetate, allyl caproate, hexyl salicylate, benzyl salicylate, cyclohexyl salicylate, cis-3-hexenyl salicylate, methyl dihydrojasmonate, cyclamen aldehyde, limonene, linalool, tetrahydrolinalool, dihydromyrcenol, methyl β-naphthyl ketone , Iso E Super, Cedryl Methyl Ether, Javanol (manufactured by Givaudan), Ambroxan, 1,8-Cineole, Geranyl Nitrile, Citronellyl Nitrile, 11-Oxa-16-Hexadecanolide (Musk R-1, manufactured by Givaudan), Ethylene Brassilelate, Ethylene Dodecanedioate, Cashmeran, Cyclopentadecanolide, Cyclohexadecanolide, and Ambrettelide. The fragrance may be a fragrance composition containing multiple fragrances.

[0026] Examples of fragrance precursors include compounds that react with water to release fragrance components. Specific examples include silicate ester compounds having an alkoxy component derived from a fragrance alcohol, fatty acid ester compounds having an alkoxy component derived from a fragrance alcohol, acetal compounds or hemiacetal compounds obtained by reacting a carbonyl component derived from a fragrance aldehyde or fragrance ketone with an alcohol compound, Schiff base compounds obtained by reacting a carbonyl component derived from a fragrance aldehyde or fragrance ketone with a primary amine compound, and hemiaminal compounds or hydrazone compounds obtained by reacting a carbonyl component derived from a fragrance aldehyde or fragrance ketone with a hydrazine compound.

[0027] Other types of fragrance precursors include compounds that release fragrance components in response to light. Examples include 2-nitrobenzyl ether compounds having an alkoxy component derived from a fragrance alcohol, α-ketoester compounds having a carbonyl component derived from a fragrance aldehyde or fragrance ketone, and coumaric acid ester compounds having an alkoxy component derived from a fragrance alcohol. These fragrance precursors may be used as polymers, such as reaction products of some carboxy groups of polyacrylic acid with a fragrance alcohol. Among these, silicate ester compounds having an alkoxy component derived from a fragrance alcohol are preferred.

[0028] The ClogP value of the functional agent is preferably 2 or more, more preferably 3 or more, even more preferably 4 or more, and preferably 30 or less, more preferably 20 or less, even more preferably 10 or less. When the ClogP value of the functional agent is 2 or more, the encapsulation rate of the functional agent within component (A) (hereinafter also referred to as "encapsulation rate") is improved. Here, the same applies when the functional agent is a fragrance composition containing multiple fragrances; when the ClogP value of the fragrance composition is 2 or more, the encapsulation rate (encapsulation rate) of the fragrance composition within component (A) can be improved. Here, the ClogP value is the "calculated logP (ClogP)" calculated by the method described in A. Leo in "Comprehensive Medicinal Chemistry", Vol. 4, (C. Hansch, P.G. Sammes, J.B. Taylor and C.A. Ramsden, Eds.), p. 295, Pergamon Press, 1990, and is the ClogP value calculated using the program CLOGP v4.01. In the case of a fragrance composition containing multiple fragrances, the ClogP value of the fragrance composition can be determined by multiplying the ClogP value of each fragrance by its volume ratio in the fragrance composition and calculating the sum of the results.

[0029] From the viewpoint of retaining the functional agent, the oil-water interfacial tension of the functional agent is preferably 7 mN / m or more, more preferably 10 mN / m or more, and even more preferably 13 mN / m or more at 25° C. The oil-water interfacial tension of the functional agent can be measured, for example, using a contact angle meter "DropMaster DM-501" (trade name, manufactured by Kyowa Interface Science Co., Ltd.).

[0030] From the viewpoint of incorporation into products and retention of functional agents, the volume average particle size of component (A) is preferably 0.5 μm or more, more preferably 0.7 μm or more, even more preferably 1 μm or more, and is preferably 50 μm or less, more preferably 10 μm or less, even more preferably 5 μm or less. In the present invention, the volume-average particle size of component (A) can be measured by the method described in the Examples. For example, it can be measured using a laser diffraction / scattering particle size distribution analyzer "LA-960" (trade name, manufactured by Horiba, Ltd.). In this case, a flow cell is used for the measurement, the medium is water, and the refractive index is set to 1.40-0i. A dispersion containing component (A) is added to the flow cell, and measurement is performed at a concentration that shows a transmittance of around 90%, and the volume-based average particle size is determined.

[0031] When component (A) is a component (A) having a first shell and a second shell containing silica as constituent components, and a core containing one or more functional agents inside the first shell, the component (A) can be obtained, for example, by a production method including the following steps (1) and (2). Step (1): A step of mixing and emulsifying an organic phase containing one or more functional agents and raw silica (e.g., tetraalkoxysilane) into an aqueous phase containing a surfactant (e.g., a cationic surfactant), and then carrying out a sol-gel reaction under acidic conditions to form a shell and form capsules encapsulating the functional agents. Step (2): A step of adding raw silica (e.g., tetraalkoxysilane) to the dispersion containing the capsules obtained in step (1) to carry out a sol-gel reaction, thereby forming capsules having a second shell encapsulating the first shell. More specifically, the component (A) can be obtained, for example, by a production method comprising the following steps (1a) and (2a), and optionally further comprising the following step (3a). Step (1a): A step of emulsifying an organic phase containing one or more functional agents and a tetraalkoxysilane, the amount of the tetraalkoxysilane being 10% by mass or more and 60% by mass or less relative to the functional agent, in an aqueous phase containing a surfactant (e.g., a cationic surfactant), and carrying out a sol-gel reaction under acidic conditions to form capsules having a core and a first shell. Step (2a): A step of further adding tetraalkoxysilane to the aqueous dispersion containing the capsules obtained in step (1a), and maintaining the initial pH of the sol-gel reaction in step (2a) lower than the initial pH of the sol-gel reaction in step (1a) to carry out a sol-gel reaction to form capsules having a second shell encapsulating the first shell. Step (3a): A step of mixing the dispersion containing the capsules obtained in step (2a) with an aqueous solution of an organic polymer compound (e.g., an anionic synthetic polymer compound) to form capsules having a third shell.

[0032] Here, the "sol-gel reaction" in steps (1) and (2), and steps (1a) and (2a) is a reaction in which raw silica (silica precursor) is hydrolyzed and polycondensed under acidic conditions to polymerize while eliminating alcohol, thereby synthesizing silica of the first shell and the second shell.

[0033] The production method can be carried out with reference to, for example, JP 2015-128762 A and JP 2017-114802 A. In the production method, the component (A) is usually obtained in a dispersed state in water. Depending on the application, this aqueous dispersion can be used as is, but in some cases, the component (A) is separated and used. As a separation method, filtration, centrifugation, etc. can be used.

[0034] In the component (A), the proportion of the functional agent may be, for example, 5% by mass or more, further 10% by mass or more, further 12% by mass or more, and 50% by mass or less, further 45% by mass or less, further 40% by mass or less.

[0035] <(B) component> The cleaning composition of the present invention contains a nonionic polymer as component (B), provided that component (B) excludes the nonionic polymer encapsulated in component (A).

[0036] Examples of the nonionic polymer of component (B) include polymers having structural units derived from nonionic monomers, water-soluble polysaccharides (cellulose-based, gum-based, starch-based, etc.), and derivatives thereof, and these can be used alone or in combination of two or more.

[0037] Examples of nonionic monomers include (meth)acrylates having a hydrocarbon group derived from an aliphatic alcohol having 1 to 22 carbon atoms; styrene-based monomers such as styrene; aromatic group-containing (meth)acrylates such as benzyl (meth)acrylate; vinyl acetate; vinylpyrrolidone; vinyl alcohol; polyalkylene glycol (meth)acrylates such as polyethylene glycol mono(meth)acrylate; alkoxypolyalkylene glycol mono(meth)acrylates such as methoxypolyethylene glycol mono(meth)acrylate and octoxypolyethylene glycol mono(meth)acrylate; (meth)acrylamide, etc. Note that "(meth)acrylate" refers to either acrylate or methacrylate. Similarly, "(meth)acrylic" refers to either acrylic or methacrylic.

[0038] From the viewpoint of suppressing disintegration of the functional agent-encapsulating silica capsules due to fiber friction, the nonionic polymer is preferably one or more selected from copolymers of vinylpyrrolidone and other nonionic monomers, such as polyvinylpyrrolidone and vinylpyrrolidone / vinyl acetate copolymer, and cellulose-based polymers, such as hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methylcellulose, and hydroxyethyl methylcellulose, and more preferably one or more cellulose-based polymers selected from hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methylcellulose, and hydroxyethyl methylcellulose.

[0039] From the viewpoint of suppressing the disintegration of the functional agent-encapsulated silica capsules due to fiber friction, the weight-average molecular weight of component (B) of the present invention is preferably 10,000 or more, more preferably 50,000 or more, even more preferably 100,000 or more, still more preferably 150,000 or more, and preferably 2,000,000 or less, more preferably 1,500,000 or less, even more preferably 1,000,000 or less, still more preferably 800,000 or less, still more preferably 600,000 or less, and still more preferably 400,000 or less. The weight-average molecular weight of component (B) can be calculated in terms of polyethylene glycol by GPC (gel permeation chromatography).

[0040] <Composition, etc.> The detergent composition of the present invention contains component (A) as the content of the encapsulated functional agent, from the viewpoints of making the fragrance effect more noticeable and suppressing the collapse of the functional agent-encapsulated silica capsules due to fiber friction, preferably 0.02% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, still more preferably 0.2% by mass or more, still more preferably 1% by mass or more, and preferably 10% by mass or less, more preferably 8% by mass or less, even more preferably 6% by mass or less, still more preferably 4% by mass or less, and still more preferably 2% by mass or less. Note that in the present invention, the content of component (A) refers to the amount of the active component as the encapsulated functional agent.

[0041] From the viewpoint of suppressing disintegration of the functional agent-encapsulating silica capsules due to fiber friction, the detergent composition of the present invention contains component (B) in an amount of preferably 0.004% by mass or more, more preferably 0.006% by mass or more, even more preferably 0.01% by mass or more, and preferably 0.1% by mass or less, more preferably 0.08% by mass or less, even more preferably 0.05% by mass or less.

[0042] In the detergent composition of the present invention, the mass ratio (A) / (B) of the content of the component (A) as an encapsulated functional agent to the content of the component (B) is, from the viewpoint of suppressing disintegration of the functional agent-encapsulating silica capsules due to fiber friction, preferably 4 or more, more preferably 5 or more, even more preferably 6 or more, still more preferably 10 or more, still more preferably 15 or more, still more preferably 20 or more, still more preferably 25 or more, still more preferably 30 or more, and preferably 40 or less, more preferably 37 or less, and even more preferably 35 or less.

[0043] The detergent composition of the present invention may further contain the following component (C) from the viewpoint of suppressing disintegration of the functional agent-encapsulated silica capsules due to fiber friction, with the proviso that component (C) excludes the surfactant encapsulated in component (A). (C) Component: Surfactant

[0044] As component (C), from the viewpoints of dispersion stability of component (A) and other bases in the composition, cleaning properties when used as a detergent, and prevention of disintegration of functional agent-encapsulated silica capsules due to fiber friction, one or more surfactants selected from (C1) anionic surfactants (hereinafter referred to as component (C1)) and (C2) nonionic surfactants (hereinafter referred to as component (C2)) are preferred.

[0045] From the viewpoint of preventing the functional agent-encapsulated silica capsules from collapsing due to fiber friction, the anionic surfactant of component (C1) may be sulfonic acids and their salts having a hydrocarbon group, sulfates and their salts having a hydrocarbon group, or carboxylic acids and their salts, with sulfonates and carboxylates having a hydrocarbon group being preferred. The hydrocarbon group may be an alkyl or alkenyl group. From the viewpoint of preventing the functional agent-encapsulated silica capsules from collapsing due to fiber friction, the number of carbon atoms in the hydrocarbon group is preferably 7 or more, more preferably 9 or more, even more preferably 11 or more, and preferably 22 or less, more preferably 20 or less, even more preferably 18 or less. Examples of the salt include monovalent metal salts such as sodium salts and potassium salts, divalent metal salts such as magnesium salts, and organic amine salts such as ammonium salts, monoethanolamine salts, diethanolamine salts, and triethanolamine salts. From the viewpoint of preventing the functional agent-encapsulated silica capsules from collapsing due to fiber friction, sodium salts are preferred.

[0046] From the viewpoint of preventing the functional agent-encapsulating silica capsules from collapsing due to fiber friction, the component (C1) is preferably one or more anionic surfactants selected from the following components (c1-1) to (c1-5). Component (c1-1): a sulfonic acid or a salt thereof represented by the following general formula (c1-1): R 1 -B-SO3M (c1-1) [In formula (c1-1), R 1 represents an alkyl or alkenyl group having 3 to 21 carbon atoms, B represents a benzene ring, and M represents a hydrogen atom, an alkali metal, an alkaline earth metal (1 / 2 atom), ammonium, or an organic ammonium. 1The sulfonic acid group is bonded to the ortho, meta, or para position. (c1-2) Component: Salt of internal olefin sulfonic acid having 14 to 24 carbon atoms (c1-3) component: salt of a fatty acid having 8 to 20 carbon atoms Component (c1-4): a sulfate ester or a salt thereof represented by the following general formula (c1-4): R 2 -O-[(PO) m / (EO) n ]-SO3M (c1-4) [In formula (c1-4), R 2 represents an alkyl or alkenyl group having 8 to 22 carbon atoms, the carbon atom bonded to the oxygen atom is the first carbon atom, PO represents a propyleneoxy group, EO represents an ethyleneoxy group, EO and PO may be bonded in a block or random manner, / is a symbol indicating that the bonding order of PO and EO does not matter, m and n represent the average number of moles added, m is 0 to 5 and n is 0 to 16, and M represents a hydrogen atom, an alkali metal, an alkaline earth metal (1 / 2 atom), ammonium or an organic ammonium. Component (c1-5): an α-sulfofatty acid ester represented by the following general formula (c1-5) or a salt thereof R 3 -CH(SO3M)COOR 4 (c1-5) [In formula (c1-5), R 3 represents an alkyl or alkenyl group having 6 to 20 carbon atoms, and R 4 represents an alkyl group having 1 to 6 carbon atoms, and M represents a hydrogen atom, an alkali metal, an alkaline earth metal (1 / 2 atom), ammonium, or an organic ammonium.

[0047] In formula (c1-1), R 1 From the viewpoint of suppressing the collapse of the functional agent-encapsulated silica capsules due to fiber friction, the number of carbon atoms is 3 or more, preferably 5 or more, more preferably 6 or more, even more preferably 7 or more, and 21 or less, preferably 20 or less, more preferably 19 or less, even more preferably 18 or less.

[0048] In formula (c1-1), M is preferably an alkali metal or organic ammonium, more preferably sodium, from the viewpoint of preventing the functional agent-encapsulating silica capsule from collapsing due to fiber friction. In the detergent composition of the present invention, the content of the component (c1-1) is based on the amount of the compound converted into its sodium salt.

[0049] Specific examples of the (c1-1) component include alkylbenzenesulfonic acid and cumenesulfonic acid.

[0050] The number of carbon atoms in the internal olefin sulfonate salt of component (c1-2) is 14 or more, preferably 16 or more, more preferably 18 or more, and 24 or less, more preferably 22 or less, and even more preferably 20 or less, from the viewpoint of suppressing the collapse of the functional agent-encapsulated silica capsules due to fiber friction. The component (c1-2) includes not only internal olefin sulfonates but also hydroxyalkane sulfonates and α-olefin sulfonates that are produced during synthesis.

[0051] Examples of salts of component (c1-2) include salts of alkali metals such as hydrogen atoms, sodium and potassium, salts of alkaline earth metals such as calcium and magnesium, ammonium salts, and organic ammonium salts, such as alkanolammonium salts such as monoethanolammonium, diethanolammonium and triethanolammonium. From the viewpoint of preventing the disintegration of the functional agent-encapsulating silica capsules due to fiber friction, alkaline earth metals or alkanolammonium salts having from 2 to 6 carbon atoms are preferred. In the detergent composition of the present invention, the content of the component (c1-2) is based on the amount of the compound converted into a potassium salt.

[0052] The number of carbon atoms of the fatty acid of component (c1-3) is 8 or more, preferably 10 or more, more preferably 12 or more, and 20 or less, more preferably 18 or less, and even more preferably 16 or less, from the viewpoint of preventing the disintegration of the silica capsules containing the functional agent due to fiber friction.

[0053] Specific examples of the component (c1-3) include one or more selected from octanoate, decanoate, laurate, myristate, palmitate, stearate, coconut fatty acid, palm fatty acid, palm kernel fatty acid, and the like.

[0054] In formula (c1-4), R 2 From the viewpoint of suppressing the collapse of the functional agent-containing silica capsules due to fiber friction, R is an alkyl group having preferably 9 or more carbon atoms, more preferably 10 or more, even more preferably 12 or more, and preferably 18 or less, more preferably 16 or less, even more preferably 14 or less. 2 is preferably a straight chain alkyl group.

[0055] In formula (c1-4), m is preferably 4 or less, more preferably 3 or less, from the viewpoint of preventing the functional agent-encapsulating silica capsules from collapsing due to fiber friction.

[0056] In formula (c1-4), n is preferably 0 or more, more preferably 1 or more, even more preferably 2 or more, still more preferably 4 or more, and is preferably 10 or less, more preferably 8 or less, even more preferably 6 or less, from the viewpoint of suppressing the collapse of the functional agent-encapsulated silica capsules due to fiber friction.

[0057] In formula (c1-4), M is preferably a hydrogen atom, an alkali metal such as sodium or potassium, an alkaline earth metal (1 / 2 atom) such as magnesium or calcium, or an organic ammonium, from the viewpoint of suppressing the disintegration of the functional agent-encapsulated silica capsules due to fiber friction. M is more preferably an alkali metal such as sodium or potassium, or an alkanolammonium such as monoethanolammonium or diethanolammonium, and even more preferably sodium, from the viewpoint of suppressing the disintegration of the functional agent-encapsulated silica capsules due to fiber friction. In the detergent composition of the present invention, the content of the component (c1-4) is based on the amount of the compound converted into its sodium salt.

[0058] A specific example of the (c1-4) component is preferably a (polyoxypropylene) polyoxyethylene alkyl ether sulfate sodium salt, in which the alkyl group has 12 to 14 carbon atoms, the average number of moles of propyleneoxy groups added is 0 to 4, and the average number of moles of ethyleneoxy groups added is 1 to 4. In other words, ... 2 is an alkyl group having 12 to 14 carbon atoms, m is 0 to 4, n is 1 to 4, and M is sodium.

[0059] In formula (c1-5), R 3 is an alkyl group having preferably 8 or more carbon atoms, more preferably 10 or more carbon atoms, and preferably 18 or less, more preferably 16 or less carbon atoms, from the viewpoint of preventing the functional agent-encapsulating silica capsules from collapsing due to fiber friction.

[0060] In formula (c1-5), R 4 is an alkyl group having 1 or more carbon atoms, preferably 5 or less, and more preferably 4 or less, from the viewpoint of preventing the functional agent-encapsulating silica capsules from collapsing due to fiber friction.

[0061] In formula (c1-5), M is preferably a hydrogen atom, an alkali metal such as sodium or potassium, an alkaline earth metal (1 / 2 atom) such as magnesium or calcium, or an organic ammonium, from the viewpoint of suppressing the disintegration of the functional agent-encapsulated silica capsules due to fiber friction. M is more preferably an alkali metal such as sodium or potassium, or an alkanolammonium such as monoethanolammonium or diethanolammonium, and even more preferably sodium, from the viewpoint of suppressing the disintegration of the functional agent-encapsulated silica capsules due to fiber friction. In the detergent composition of the present invention, the content of the component (c1-5) is based on the amount of the compound converted into its sodium salt.

[0062] As a specific example of the (c1-5) component, from the viewpoint of suppressing the collapse of the functional agent-encapsulated silica capsules due to fiber friction, R 3an alkyl group having a value of 11 or more and 14 or less, R 4 is a methyl group, and α-sulfofatty acid methyl ester sodium salts are preferred.

[0063] From the viewpoint of inhibiting the disintegration of the functional agent-encapsulated silica capsules due to fiber friction, the nonionic surfactant of component (c2) may be one or more selected from sucrose fatty acid esters, glycerin fatty acid esters, sorbitan fatty acid esters, polyoxyalkylene sorbitan fatty acid esters, polyoxyalkylene fatty acid esters, fatty acid alkanolamides or their alkylene oxide adducts, polyoxyalkylene alkyl ethers, fatty acid methyl ester alkoxylates, alkyl glycosides, glyceryl monoethers, etc., and among these, one or more selected from polyoxyalkylene alkyl ethers and fatty acid methyl ester alkoxylates are preferred.

[0064] As the component (C2), from the viewpoint of suppressing the disintegration of the functional agent-encapsulating silica capsules due to fiber friction, the compound represented by the following general formula (c2-1) can be mentioned. R 5 -(CO) x O-(AO) y -R 6 (c2-1) [In the formula, R 5 is an alkyl or alkenyl group having 9 to 18 carbon atoms, and R 6 is a hydrogen atom or a methyl group, CO is a carbonyl group, x is the number 0 or 1, AO is one or more alkyleneoxy groups selected from alkyleneoxy groups having from 2 to 4 carbon atoms, and y is the average number of moles added, which is from 3 to 50. When AO contains two or more types of alkyleneoxy groups, the bonds may be random or block bonds.

[0065] In formula (c2-1), R 5 From the viewpoint of suppressing the collapse of the functional agent-encapsulated silica capsules due to fiber friction, the number of carbon atoms is 9 or more, preferably 10 or more, more preferably 11 or more, even more preferably 12 or more, and 17 or less, preferably 16 or less, more preferably 15 or less, even more preferably 14 or less.

[0066] In formula (c2-1), AO represents one or more alkyleneoxy groups selected from alkyleneoxy groups having from 2 to 4 carbon atoms, preferably one or more alkyleneoxy groups selected from an ethyleneoxy group and a propyleneoxy group, from the viewpoint of suppressing the collapse of the functional agent-encapsulating silica capsule due to fiber friction.

[0067] In formula (c2-1), x is a number of 0 or 1, preferably 0, from the viewpoint of suppressing the disintegration of the functional agent-encapsulating silica capsules due to fiber friction.

[0068] In formula (c2-1), y is 3 or more, preferably 5 or more, more preferably 7 or more, even more preferably 8 or more, still more preferably 9 or more, still more preferably 10 or more, and is 50 or less, preferably 40 or less, more preferably 30 or less, still more preferably 20 or less, and still more preferably 15 or less, from the viewpoint of suppressing the disintegration of the functional agent-encapsulated silica capsules due to fiber friction.

[0069] From the viewpoint of suppressing the disintegration of the functional agent-encapsulating silica capsules due to fiber friction, the component (C2) may be, for example, a compound represented by the following general formula (c2-2): This compound is a compound represented by the above general formula (c2-1) in which AO is an ethyleneoxy group and a propyleneoxy group. R 7 -O-(EO) s -(PO) t -(EO) r -H (c2-2) [In the formula, in the formula, R 7 represents an alkyl or alkenyl group having 8 to 18 carbon atoms, EO represents an ethyleneoxy group, PO represents a propyleneoxy group, s, t, and r each represent the average number of moles added, s is 0 to 30, t is 0.1 to 5, and r is 0 to 30.

[0070] In formula (c2-2), R 7From the viewpoint of preventing the functional agent-encapsulating silica capsules from collapsing during rinsing, the number of carbon atoms is 9 or more, preferably 10 or more, more preferably 11 or more, even more preferably 12 or more, and 17 or less, preferably 16 or less, more preferably 15 or less, even more preferably 14 or less.

[0071] In formula (c2-2), s is preferably 0 or more, more preferably 1 or more, even more preferably 2 or more, and is preferably 30 or less, more preferably 20 or less, even more preferably 15 or less, from the viewpoint of preventing the collapse of the functional agent-encapsulated silica capsules during rinsing.

[0072] In formula (c2-2), t is preferably 0.1 or more, more preferably 0.5 or more, even more preferably 1 or more, and is preferably 5 or less, more preferably 4.5 or less, even more preferably 4.2 or less, from the viewpoint of preventing the collapse of the functional agent-encapsulated silica capsules during rinsing.

[0073] In formula (c2-2), r is preferably 3 or more, more preferably 5 or more, even more preferably 7 or more, and is preferably 30 or less, more preferably 25 or less, even more preferably 20 or less, from the viewpoint of preventing the collapse of the functional agent-encapsulated silica capsules during rinsing.

[0074] When the detergent composition of the present invention contains component (C), from the viewpoints of dispersion stability of component (A) and other bases in the composition, detergency when used as a detergent, and suppression of disintegration of the functional agent-encapsulating silica capsules due to fiber friction, the detergent composition of the present invention contains component (C) in an amount of preferably 1% by mass or more, more preferably 2% by mass or more, even more preferably 5% by mass or more, still more preferably 10% by mass or more, still more preferably 15% 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, still more preferably 30% by mass or less, and still more preferably 25% by mass or less.

[0075] When the detergent composition of the present invention contains the components (C1) and (C2) as the component (C), the mass ratio (C1) / (C2) of the content of the component (C1) to the content of the component (C2) is preferably 0.05 or more, more preferably 0.1 or more, even more preferably 0.2 or more, and preferably 3 or less, more preferably 2 or less, even more preferably 1 or less, and still more preferably 0.5 or less, from the viewpoints of dispersion stability of the component (A) and other bases in the composition, cleaning performance when used as a detergent, and suppression of disintegration of the functional agent-encapsulating silica capsules during rinsing.

[0076] In the detergent composition of the present invention, the mass ratio (C) / (A) of the content of the functional agent encapsulated in component (A) to the content of component (C) is, from the viewpoints of dispersibility of component (A) and suppression of disintegration of the functional agent-encapsulating silica capsules due to fiber friction, preferably 5 or more, more preferably 10 or more, even more preferably 15 or more, and is preferably 1000 or less, more preferably 750 or less, even more preferably 500 or less, still more preferably 250 or less, still more preferably 100 or less, still more preferably 50 or less, still more preferably 40 or less, and still more preferably 30 or less.

[0077] The detergent composition of the present invention may further contain a hydroxyl-containing organic solvent as component (D) from the viewpoint of stably blending component (C) and suppressing disintegration of the functional agent-encapsulated silica capsules due to fiber friction, provided that component (D) excludes the hydroxyl-containing organic solvent encapsulated in component (A).

[0078] Specific examples of the component (D) include the following compounds (D1) to (D6). (D1) Monohydric alcohols with 2 to 4 carbon atoms, such as ethanol and isopropanol (D2) Polyhydric alcohols having 2 to 8 carbon atoms, such as ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, and glycerin, with a hydric or more and a hexahydric or less. (D3) Glycol ethers having 4 to 12 carbon atoms, such as diethylene glycol, triethylene glycol, tetraethylene glycol, dipropylene glycol, and tripropylene glycol (D4) Alkyl (carbon number 1 to 10) ethers of divalent to tetravalent polyhydric alcohols, such as diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol monobutyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, tripropylene glycol monomethyl ether, 1-methoxy-2-propanol, 1-ethoxy-2-propanol, 1-methylglyceryl ether, 2-methylglyceryl ether, 1,3-dimethylglyceryl ether, 1-ethylglyceryl ether, 1,3-diethylglyceryl ether, 1-pentylglyceryl ether, 2-pentylglyceryl ether, 1-octylglyceryl ether, 2-ethylhexylglyceryl ether, and diethylene glycol monobutyl ether. (D5) Aromatic ethers of glycols such as phenoxyethanol, diethylene glycol monophenyl ether, triethylene glycol monophenyl ether, polyethylene glycol monophenyl ether having an average molecular weight of about 480, 2-benzyloxyethanol, and diethylene glycol monobenzyl ether (D6) Organic solvents other than (D1) to (D5), such as 3-methoxy-3-methyl-1-butanol

[0079] From the viewpoint of stably blending component (C) and suppressing disintegration of the functional agent-encapsulated silica capsules due to fiber friction, component (D) is preferably one or more selected from phenoxyethanol, diethylene glycol monobutyl ether, 3-methoxy-3-methyl-1-butanol, ethanol, ethylene glycol, propylene glycol, and butylene glycol, and more preferably one or more selected from phenoxyethanol, diethylene glycol monobutyl ether, 3-methoxy-3-methyl-1-butanol, ethylene glycol, and propylene glycol.

[0080] When the detergent composition of the present invention contains component (D), from the viewpoints of stably blending component (C) and suppressing the collapse of the functional agent-encapsulated silica capsules due to fiber friction, the detergent composition of the present invention contains component (D) 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, and still more preferably 8% by mass or more; and from the viewpoints of suppressing leakage of the functionalizing agent from the silica capsules in component (A) and suppressing the collapse of the functional agent-encapsulated silica capsules due to fiber friction, the detergent composition of the present invention contains component (D) in an amount of preferably 20% by mass or less, more preferably 18% by mass or less, and even more preferably 15% by mass or less.

[0081] The detergent composition of the present invention may further contain a pH adjuster as component (E) from the viewpoint of suppressing precipitation or separation of solids in the composition in a low-temperature environment and suppressing disintegration of the functional agent-encapsulated silica capsules due to fiber friction, provided that component (E) excludes the pH adjuster encapsulated in component (A). pH adjusters include: (1) Acidic agents such as inorganic acids such as hydrochloric acid and sulfuric acid, and organic acids such as p-toluenesulfonic acid, (o-, m-, p-)xylenesulfonic acid, citric acid, succinic acid, malic acid, fumaric acid, tartaric acid, malonic acid, and maleic acid, and (2) Alkaline agents such as sodium hydroxide, potassium hydroxide, ammonia and its derivatives, amine salts such as monoethanolamine, diethanolamine, and triethanolamine, sodium carbonate, potassium carbonate, etc. Examples of compounds include compounds selected from the following:

[0082] When the liquid detergent composition of the present invention contains component (E), from the viewpoints of suppressing precipitation or separation of solids in the composition in a low-temperature environment and suppressing disintegration of silica capsules containing functional agents due to fiber friction, the liquid detergent composition of the present invention preferably contains 0.01% by mass or more, more preferably 0.03% by mass or more, even more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, even more preferably 0.2% by mass or more, and preferably 2% by mass or less, more preferably 1.5% by mass or less, even more preferably 1.0% by mass or less, and even more preferably 0.8% by mass or less.

[0083] The remainder of the cleaning composition of the present invention is water. The water used is the same as that used in general liquid cleaning agents, but deionized water (ion-exchanged water) or water containing sodium hypochlorite in an amount of 1 mg / kg to 5 mg / kg of ion-exchanged water can also be used. Distilled water or tap water can also be used. The detergent composition of the present invention contains water in an amount of preferably 50% by mass or more, more preferably 55% by mass or more, even more preferably 60% by mass or more, and preferably 80% by mass or less, more preferably 75% by mass or less, even more preferably 70% by mass or less, from the viewpoint of suppressing disintegration of the functional agent-encapsulating silica capsules due to fiber friction.

[0084] In addition to the above components, the detergent composition of the present invention may contain any of the following components (F1) to (F8) from the viewpoint of suppressing the disintegration of the functional agent-encapsulated silica capsules due to fiber friction, excluding those encapsulated in component (A). (F1) Anti-redeposition agents and dispersants such as polyacrylic acid, polymaleic acid, and carboxymethyl cellulose (F2) Bleaching agents such as hydrogen peroxide, sodium percarbonate, or sodium perborate (F3) Bleaching activators such as tetraacetylethylenediamine and bleaching activators represented by general formulas (I-2) to (I-7) of JP-A-6-316700 (F4) One or more enzymes selected from cellulase, amylase, pectinase, protease, and lipase (F5) Fluorescent dyes, for example, fluorescent dyes commercially available as Tinopal CBS (trade name, manufactured by Ciba Specialty Chemicals) and Whitex SA (trade name, manufactured by Sumitomo Chemical Co., Ltd.) (F6) Antioxidants such as butylhydroxytoluene, distyrenated cresol, sodium sulfite, and sodium hydrogen sulfite (F7) Colorants, fragrances, antibacterial preservatives such as dichrosan, antifoaming agents such as silicone (F8) Hydrogenated castor oil

[0085] The detergent composition of the present invention may contain hydrogenated castor oil as component (F8) to suppress separation of the functional agent-encapsulated silica capsules of component (A). The content of component (F8) in the detergent composition of the present invention is preferably 0.05% by mass or more, more preferably 0.07% by mass or more, and even more preferably 0.1% by mass or more, from the viewpoints of suppressing separation of the fragrance microcapsules and suppressing disintegration of the functional agent-encapsulated silica capsules due to fiber friction, and is preferably 1% by mass or less, more preferably 0.8% by mass or less, and even more preferably 0.5% by mass or less, from the viewpoints of reducing the viscosity of the detergent composition and suppressing disintegration of the functional agent-encapsulated silica capsules due to fiber friction.

[0086] The pH of the detergent composition of the present invention at 25°C is preferably 4 or more, more preferably 5 or more, even more preferably 6 or more, and preferably 9 or less, more preferably 8.5 or less, even more preferably 8 or less, from the viewpoints of suppressing precipitation or separation of solids in the composition in a low-temperature environment and suppressing disintegration of the functional agent-encapsulating silica capsules due to fiber friction. The pH is measured according to the pH measurement method described below. [pH measurement method] A pH measurement combination electrode (HORIBA 9615S Measurement Method Model JF15) is connected to a pH meter (HORIBA pH / Ion Meter D-71) and the power is turned on. A saturated potassium chloride aqueous solution (3.33 mol / L) is used as the pH electrode internal solution. Next, 100 mL of pH 4.01 standard solution (phthalate standard solution), pH 6.86 (neutral phosphate standard solution), and pH 9.18 standard solution (borate standard solution) are each filled into a beaker and immersed in a thermostatic bath at 25°C for 30 minutes. The pH measurement electrode is immersed in the thermostatically adjusted standard solutions for 3 minutes, and calibration is performed in the following order: pH 6.86 → pH 9.18 → pH 4.01. The sample to be measured is adjusted to 25°C, and the pH meter electrode is immersed in the sample and the pH is measured after 3 minutes.

[0087] The viscosity of the detergent composition of the present invention at 25°C is preferably 10 mPa·s or more, more preferably 20 mPa·s or more, even more preferably 30 mPa·s or more, and preferably 400 mPa·s or less, more preferably 300 mPa·s or less, even more preferably 200 mPa·s or less, from the viewpoints of ease of handling the detergent composition and prevention of disintegration of the functional agent-encapsulating silica capsules due to fiber friction. These viscosities are measured using a Brookfield viscometer (for example, VISCOMETER MODEL DVM-B, manufactured by Tokyo Keiki Co., Ltd.) with rotor No. 3 or 4, a rotation speed of 60 r / min, and a measurement time of 60 seconds.

[0088] The detergent composition of the present invention can be suitably used for textile products. The fibers to be cleaned with the detergent composition of the present invention may be either hydrophobic or hydrophilic. Examples of hydrophobic fibers include protein fibers (such as milk protein casein fibers and Promix), polyamide fibers (such as nylon), polyester fibers (such as polyester), polyacrylonitrile fibers (such as acrylic), polyvinyl alcohol fibers (such as vinylon), polyvinyl chloride fibers (such as polyvinyl chloride), polyvinylidene chloride fibers (such as vinylidene), polyolefin fibers (such as polyethylene and polypropylene), polyurethane fibers (such as polyurethane), polyvinyl chloride / polyvinyl alcohol copolymer fibers (such as polycral), polyalkylene paraoxybenzoate fibers (such as benzoate), polyfluoroethylene fibers (such as polytetrafluoroethylene), glass fibers, carbon fibers, alumina fibers, silicone carbide fibers, rock fibers, slag fibers, and metal fibers (gold thread, silver thread, and steel fiber). Examples of hydrophilic fibers include seed hair fibers (cotton, cotton, kapok, etc.), bast fibers (hemp, flax, ramie, hemp, jute, etc.), leaf vein fibers (Manila hemp, sisal, etc.), palm fibers, rush, straw, animal hair fibers (wool, mohair, cashmere, camel hair, alpaca, vicuna, angora, etc.), silk fibers (domestic silk, wild silk), feathers, and cellulosic fibers (rayon, polynosic, cupra, acetate, etc.).

[0089] Examples of textile products include fabrics such as woven fabrics, knitted fabrics, and nonwoven fabrics using the hydrophobic fibers or hydrophilic fibers, and products obtained using the same, such as undershirts, T-shirts, dress shirts, blouses, slacks, hats, handkerchiefs, towels, knitwear, socks, underwear, tights, and masks.

[0090] [Method of manufacturing the cleaning composition] The present invention provides a method for producing a detergent composition, which comprises mixing the component (A), the component (B), and water. In the method for producing the detergent composition of the present invention, the component (C) may further be mixed. In the method for producing the detergent composition of the present invention, the component (D) can be further mixed. In the method for producing the detergent composition of the present invention, the component (E) may further be mixed. In the method for producing the detergent composition of the present invention, any of the above components (F1) to (F8) may be further mixed. The components (A), (B), (C), (D), (E), and (F1) to (F8) are the same as those described in the detergent composition of the present invention. In the method for producing the detergent composition of the present invention, the amounts of component (A), component (B), component (C), component (D), component (E), mass ratios (A) / (B), mass ratios (C1) / (C2), and mass ratios (C) / (A) can be applied to the method for producing the detergent composition of the present invention by replacing the contents of each component and each mass ratio described in the description of the detergent composition of the present invention with the mixed amounts. Note that in the present invention, the amount of component (A) is the amount of an active component as an encapsulated functional agent. The method for producing the detergent composition of the present invention can be suitably applied to the embodiments described for the detergent composition of the present invention.

[0091] [How to wash textile products] The present invention provides a method for cleaning textile products, which comprises washing textile products with a cleaning liquid (hereinafter also referred to as the cleaning liquid of the present invention) obtained by mixing the detergent composition of the present invention with water, and then rinsing the textile products with water. The matters described in relation to the detergent composition of the present invention can be appropriately applied to the method for cleaning textile products of the present invention. In the method for cleaning textile products of the present invention, the ranges of the mass ratio (A) / (B) of the content of component (A) to the content of component (B), the mass ratio (C1) / (C2) of the content of component (C1) to the content of component (C2), and the mass ratio (C) / (A) of the content of component (A) to the content of component (C) in the cleaning solution are the same as those described for the detergent composition of the present invention. Note that, in the present invention, the content of component (A) refers to the amount of the active ingredient as an encapsulated functional agent.

[0092] The water used in the method for washing textile products of the present invention preferably has hardness, which, from the viewpoints of cleansing dirt adhering to textile products and preventing the collapse of functional agent-encapsulating silica capsules due to friction with fibers, is preferably 0°dH or more, more preferably 1°dH or more, even more preferably 2°dH or more on the German hardness scale, and preferably 30°dH or less, more preferably 20°dH or less, even more preferably 10°dH or less. Here, German hardness (°dH) in this specification refers to the concentration of calcium and magnesium in water expressed as a CaCO3 equivalent concentration of 1 mg / L (ppm) = approximately 0.056°dH (1°dH = 17.8 ppm). The calcium and magnesium concentrations for this German hardness are determined by chelate titration using ethylenediaminetetraacetic acid disodium salt. A specific method for measuring the German hardness of water in this specification is shown below. <Method for measuring water hardness in Germany> 〔reagent〕 0.01 mol / l EDTA·2Na solution: 0.01 mol / l aqueous solution of disodium ethylenediaminetetraacetic acid (titration solution, 0.01 M EDTA-Na2, manufactured by Sigma-Aldrich) Universal BT indicator (product name: Universal BT, manufactured by Dojindo Laboratories, Inc.) Ammonia buffer solution for hardness measurement (67.5 g of ammonium chloride dissolved in 570 ml of 28 w / v% ammonia water, and then made up to 1000 ml with ion-exchanged water) [Measurement of hardness] (1) Use a volumetric pipette to collect 20 ml of sample water into a conical beaker. (2) Add 2 ml of ammonia buffer solution for hardness measurement. (3) Add 0.5 ml of Universal BT indicator. After addition, confirm that the solution is reddish purple. (4) While shaking the conical beaker well, add the 0.01 mol / l EDTA·2Na solution dropwise from the burette. The end point of the titration is when the sample water turns blue. (5) The total hardness is calculated using the following formula. Hardness (°dH)=T×0.01×F×56.0774×100 / A T:0.01mol / l Titration amount of EDTA・2Na solution (mL) A: Sample volume (20 mL, volume of sample water) F: Factor of 0.01 mol / l EDTA·2Na solution

[0093] The method for washing textile products with the cleaning solution of the present invention is not particularly limited, but examples thereof include a method of immersing the textile products in the cleaning solution of the present invention. Here, "immersion" refers to a state in which the textile products are immersed in the cleaning solution of the present invention. When washing textile products by immersion treatment, the textile products may be washed while being stirred.

[0094] In the method for washing textile products of the present invention, textile products containing a cleaning solution can be hand-washed. Hand-washing methods include rubbing the textile products with hands, pushing the textile products, and rubbing the textile products together with hands. When hand-washing, the detergent composition of the present invention is used at a concentration of preferably 1.0 g or more, more preferably 1.5 g or more, even more preferably 2.0 g or more, and preferably 10 g or less, more preferably 7 g or less, and even more preferably 5 g or less per liter of water, from the viewpoints of cleaning ability for stains attached to textile products and suppressing disintegration of the functional agent-encapsulating silica capsules due to friction with the fibers.

[0095] In the method for washing textile products of the present invention, the textile products can be washed in a washing machine. When washing in a washing machine, the detergent composition of the present invention is used at a concentration of preferably 0.2 g or more, more preferably 0.5 g or more, even more preferably 1.0 g or more, and preferably 8 g or less, more preferably 5 g or less, even more preferably 3 g or less per liter of water, from the viewpoints of cleaning ability for dirt adhering to textile products and suppressing disintegration of the functional agent-encapsulating silica capsules due to friction with the fibers.

[0096] Examples of washing machines include vertical washing machines, two-tier washing machines, drum washing machines, pulsator washing machines, agitator washing machines, compact washing machines, etc. These washing machines can be commercially available for home use.

[0097] The cleaning solution of the present invention is preferably prepared by diluting the cleaning composition of the present invention with water so that the content of each component falls within the above ranges. The specific dilution ratio is preferably 500 times or more, more preferably 750 times or more, and preferably 5000 times or less, more preferably 3000 times or less, from the viewpoints of determining an appropriate product volume based on the appropriate amount and number of uses of the cleaning composition and of suppressing the disintegration of the functional agent-encapsulating silica capsules due to fiber friction.

[0098] The cleaning solution of the present invention contains component (A) in an amount of preferably 0.00003% by mass or more, more preferably 0.0001% by mass or more, even more preferably 0.0003% by mass or more, and preferably 0.005% by mass or less, more preferably 0.002% by mass or less, and even more preferably 0.001% by mass or less, from the viewpoints of obtaining a sufficient fragrance effect on fibers and suppressing the collapse of the functional agent-encapsulated silica capsules due to fiber friction. Note that in the present invention, the content of component (A) refers to the amount of the active component as the encapsulated functional agent.

[0099] The cleaning solution of the present invention contains component (B) in an amount of preferably 0.000001% by mass or more, more preferably 0.000003% by mass or more, even more preferably 0.00001% by mass or more, and preferably 0.003% by mass or less, more preferably 0.001% by mass or less, even more preferably 0.0003% by mass or less, from the viewpoint of making the fragrance effect more noticeable and preventing the disintegration of the functional agent-encapsulated silica capsules due to fiber friction.

[0100] When the cleaning liquid of the present invention contains component (C), from the viewpoints of cleaning ability for dirt adhering to textile products and suppressing disintegration of silica capsules containing functional agents due to friction with fibers, the cleaning liquid of the present invention contains component (C) in an amount of preferably 0.001% by mass or more, more preferably 0.003% by mass or more, even more preferably 0.01% by mass or more, and preferably 0.25% by mass or less, more preferably 0.1% by mass or less, even more preferably 0.05% by mass or less.

[0101] When the cleaning liquid of the present invention contains component (D), from the viewpoints of cleaning ability for dirt adhering to textile products and suppressing disintegration of silica capsules containing functional agents due to friction with fibers, the cleaning liquid of the present invention contains component (D) in an amount of preferably 0.0003% by mass or more, more preferably 0.001% by mass or more, even more preferably 0.003% by mass or more, and preferably 0.05% by mass or less, more preferably 0.03% by mass or less, even more preferably 0.01% by mass or less.

[0102] When the cleaning liquid of the present invention contains component (E), from the viewpoints of cleaning ability for dirt adhering to textile products and suppressing disintegration of functional agent-encapsulated silica capsules due to fiber friction, the cleaning liquid of the present invention contains component (E) in an amount of preferably 0.00003% by mass or more, more preferably 0.0001% by mass or more, even more preferably 0.0003% by mass or more, and preferably 0.005% by mass or less, more preferably 0.003% by mass or less, even more preferably 0.001% by mass or less.

[0103] When the cleaning liquid of the present invention contains component (F8), it preferably contains 0.00001% by mass or more of component (F8), from the viewpoints of preventing separation of fragrance microcapsules and preventing functional agent-containing silica capsules from detaching from textile products during rinsing, more preferably 0.00001% by mass or more, more preferably 0.00005% by mass or more, even more preferably 0.0001% by mass or more, and from the viewpoint of preventing functional agent-containing silica capsules from detaching from textile products during rinsing, it preferably contains 0.0050% by mass or less, more preferably 0.001% by mass or less, even more preferably 0.003% by mass or less.

[0104] The temperature of the cleaning solution is preferably 0°C or higher, more preferably 3°C or higher, and even more preferably 5°C or higher, from the viewpoint of improving the cleaning performance of dirt adhering to textile products and preventing the collapse of functional agent-containing silica capsules due to fiber friction, and is preferably 40°C or lower, more preferably 35°C or lower, from the viewpoint of preventing the collapse of functional agent-containing silica capsules due to fiber friction without removing too much of the oil contained in the fibers that make up the clothing, thereby improving the finish of the textile products.

[0105] The washing time is preferably 2 minutes or more, more preferably 3 minutes or more, from the viewpoint of preventing the disintegration of the functional agent-encapsulated silica capsules due to friction with the fibers, thereby improving the cleaning performance of stains adhering to textile products, and is preferably 60 minutes or less, more preferably 45 minutes or less, from the viewpoint of preventing the disintegration of the functional agent-encapsulated silica capsules due to friction with the fibers, thereby improving the finish of the textile products.

[0106] The pH of the cleaning solution is preferably 4 or more, more preferably 5 or more, even more preferably 6 or more, and preferably 10 or less, more preferably 9 or less, even more preferably 8 or less, from the viewpoints of further improving the cleaning ability of soiling textile products and suppressing the disintegration of the functional agent-encapsulating silica capsules due to friction with the fibers. The pH of the cleaning solution can be measured in the same manner as the pH of the liquid detergent composition of the present invention. The pH of the cleaning solution at 25°C may be within the above range.

[0107] The bath ratio, which is the ratio of the mass (kg) of the textile product to the amount (liters) of cleaning liquid, i.e., the amount of cleaning liquid (liters) / mass (kg) of the textile product (hereinafter, this ratio may be referred to as the bath ratio), is preferably 2 or more, more preferably 3 or more, even more preferably 4 or more, and even more preferably 5 or more, from the viewpoint of improving the finish of the textile product and suppressing the collapse of the functional agent-containing silica capsules due to fiber friction, and is preferably 40 or less, more preferably 30 or less, and even more preferably 20 or less, from the viewpoint of maintaining the cleanability of dirt adhering to the textile product and suppressing the collapse of the functional agent-containing silica capsules due to fiber friction.

[0108] The fibers and textile products targeted by the method for cleaning textile products of the present invention are the same as those described for the liquid detergent composition of the present invention.

[0109] In the method for washing textile products of the present invention, rinsing can be performed after washing the textile products with the cleaning solution of the present invention. In the present invention, rinsing refers to a process in which the textile products containing the cleaning solution are brought into contact with new water to reduce the amount of the components of the present invention carried over with the cleaning solution contained in the textile products. The temperature and amount of water used in rinsing may be the same as or different from the water used in the washing operation of the present invention. Rinsing can be performed multiple times.

[0110] The temperature of the rinse water is preferably 5°C or higher, more preferably 10°C or higher, and preferably 40°C or lower, more preferably 30°C or lower, from the viewpoint of preventing the disintegration of the functional agent-encapsulating silica capsules due to friction with the fibers.

[0111] In addition, the rinsing time is preferably 1 minute or more, more preferably 2 minutes or more, and preferably 30 minutes or less, more preferably 20 minutes or less, and even more preferably 15 minutes or less, from the viewpoint of preventing the disintegration of the functional agent-encapsulated silica capsules due to fiber friction.

[0112] The textile products treated by the method for washing textile products of the present invention may be dehydrated and dried naturally or in a heated dryer. If a better finish is important, the dried textile products may be ironed.

[0113] [Cleaning solution kit] The present invention provides a cleaning solution kit comprising a first agent containing the component (A) and a second agent containing the component (B). Specifically, the cleaning solution kit of the present invention is a kit comprising a first agent containing component (A) and a second agent containing component (B) in separate states. The cleaning solution kit of the present invention contains the components in separate containers that can store them separately, and they are mixed together before use. In particular, a kit in which a first agent containing component (A) (preferably substantially free of component (B)) and a second agent containing component (B) (preferably substantially free of component (A)) are filled in separate containers is preferred. The cleaning solution of the present invention is prepared by mixing a first agent containing component (A), a second agent containing component (B), and water using the cleaning solution kit of the present invention. The cleaning solution kit of the present invention can be appropriately applied with the embodiments described in relation to the detergent composition of the present invention and the method for producing the same, and the method for cleaning textile products of the present invention. The components (A) and (B) are the same as those described in the detergent composition of the present invention.

[0114] The cleaning solution kit of the present invention is a mixture of a first agent containing component (A), a second agent containing component (B), and water, so that the content of component (A) in the cleaning solution is preferably 0.00003% by mass or more, more preferably 0.0001% by mass or more, even more preferably 0.0003% by mass or more, and preferably 0.005% by mass or less, more preferably 0.002% by mass or less, and even more preferably 0.001% by mass or less, from the viewpoints of obtaining a sufficient fragrance effect on fibers and suppressing the collapse of the functional agent-containing silica capsules due to fiber friction. Note that in the present invention, the content of component (A) is the amount of the active component as the encapsulated functional agent.

[0115] The cleaning solution kit of the present invention is obtained by mixing a first agent containing component (A), a second agent containing component (B), and water so that the content of component (B) in the cleaning solution is preferably 0.000001% by mass or more, more preferably 0.000003% by mass or more, even more preferably 0.00001% by mass or more, and preferably 0.003% by mass or less, more preferably 0.001% by mass or less, even more preferably 0.0003% by mass or less, from the viewpoint of making the fragrance effect more noticeable and preventing the disintegration of silica capsules containing functional agents due to fiber friction.

[0116] The cleaning solution kit of the present invention is prepared by mixing a first agent containing component (A), a second agent containing component (B), and water so that the mass ratio (A) / (B) of the content of component (A) as a functional agent contained in the cleaning solution to the content of component (B) is preferably 4 or more, more preferably 5 or more, even more preferably 6 or more, still more preferably 10 or more, still more preferably 15 or more, still more preferably 20 or more, still more preferably 25 or more, still more preferably 30 or more, and preferably 40 or less, more preferably 37 or less, and still more preferably 35 or less, from the viewpoint of suppressing the disintegration of the functional agent-containing silica capsules due to fiber friction.

[0117] The cleaning solution kit of the present invention preferably contains the component (C) in at least one of the first agent containing the component (A) and the second agent containing the component (B). The component (C) is the same as that described in the detergent composition of the present invention.

[0118] When the cleaning solution kit of the present invention contains component (C) in at least one of a first agent containing component (A) and a second agent containing component (B), the first agent, second agent, and water are mixed so that the content of component (C) in the cleaning solution is preferably 0.001% by mass or more, more preferably 0.003% by mass or more, even more preferably 0.01% by mass or more, and preferably 0.25% by mass or less, more preferably 0.1% by mass or less, even more preferably 0.05% by mass or less, from the viewpoints of cleaning ability for dirt adhering to textile products and suppressing disintegration of silica capsules containing functional agents due to fiber friction.

[0119] When the cleaning solution kit of the present invention contains the components (C1) and (C2) as the component (C) in at least one of a first agent containing the component (A) and a second agent containing the component (B), the first agent, the second agent, and water are mixed so that the mass ratio (C1) / (C2) of the content of the component (C1) to the content of the component (C2) in the cleaning solution is preferably 0.05 or more, more preferably 0.1 or more, even more preferably 0.2 or more, and preferably 3 or less, more preferably 2 or less, even more preferably 1 or less, and even more preferably 0.5 or less, from the viewpoints of dispersion stability of the component (A) and other bases in the cleaning solution, cleaning performance when used as a cleaning agent, and suppression of disintegration of the functional agent-encapsulated silica capsules during rinsing.

[0120] When the cleaning solution kit of the present invention contains component (C) in at least one of a first agent containing component (A) and a second agent containing component (B), the first agent, second agent, and water are mixed so that the mass ratio (C) / (A) of the content of component (A) as a functional agent encapsulated in the cleaning solution to the content of component (C) in the cleaning solution is preferably 5 or more, more preferably 10 or more, even more preferably 15 or more, and preferably 1000 or less, more preferably 750 or less, even more preferably 500 or less, still more preferably 250 or less, still more preferably 100 or less, still more preferably 50 or less, still more preferably 40 or less, and still more preferably 30 or less, from the viewpoint of dispersibility of component (A) and suppression of disintegration of functional agent-encapsulated silica capsules due to fiber friction.

[0121] The cleaning solution kit of the present invention preferably contains the component (D) in at least one of the first agent containing the component (A) and the second agent containing the component (B). The component (D) is the same as that described in the detergent composition of the present invention.

[0122] When the cleaning solution kit of the present invention contains component (D) in at least one of the first agent containing component (A) and the second agent containing component (B), the first agent, the second agent, and water are mixed so that the content of component (D) in the cleaning solution is preferably 0.0003 mass% or more, more preferably 0.001 mass% or more, even more preferably 0.003 mass% or more, and preferably 0.05 mass% or less, more preferably 0.03 mass% or less, even more preferably 0.01 mass% or less, from the viewpoints of cleaning ability for dirt adhering to textile products and suppressing collapse of functional agent-encapsulated silica capsules due to fiber friction.

[0123] The cleaning solution kit of the present invention preferably contains the component (E) in at least one of the first agent containing the component (A) and the second agent containing the component (B). The component (E) is the same as that described in the detergent composition of the present invention.

[0124] When the cleaning solution kit of the present invention contains component (E) in at least one of a first agent containing component (A) and a second agent containing component (B), the first agent, the second agent, and water are mixed so that the content of component (E) in the cleaning solution is preferably 0.00003% by mass or more, more preferably 0.0001% by mass or more, even more preferably 0.0003% by mass or more, and preferably 0.005% by mass or less, more preferably 0.003% by mass or less, even more preferably 0.001% by mass or less, from the viewpoints of cleaning ability for dirt adhering to textile products and suppressing disintegration of silica capsules containing functional agents due to fiber friction.

[0125] The cleaning solution kit of the present invention preferably contains water in at least one of the first agent containing component (A) and the second agent containing component (B). When the cleaning solution kit of the present invention contains water in at least one of the first agent containing component (A) and the second agent containing component (B), the first agent, the second agent, and water are mixed so that the water content in the cleaning solution is preferably 99% by mass or more, more preferably 99.25% by mass or more, even more preferably 99.5% by mass or more, and preferably 99.99% by mass or less, more preferably 99.97% by mass or less, even more preferably 99.95% by mass or less, from the viewpoint of preventing the functional agent-encapsulated silica capsules from detaching from the textile product during rinsing.

[0126] The cleaning solution kit of the present invention can contain any of the components (F1) to (F8) in at least one of a first agent containing component (A) and a second agent containing component (B).

[0127] When the cleaning solution kit of the present invention contains the component (F8) as the component (F) in at least one of the first agent containing the component (A) and the second agent containing the component (B), the first agent, the second agent, and water are mixed so that the content of the component (F8) in the cleaning solution is preferably 0.00001 mass% or more, more preferably 0.00005 mass% or more, and even more preferably 0.0001 mass% or more, from the viewpoint of preventing separation of the fragrance microcapsules and preventing the functional agent-containing silica capsules from detaching from the textile product during rinsing, and is preferably 0.0050 mass% or less, more preferably 0.001 mass% or less, and even more preferably 0.003 mass% or less, from the viewpoint of preventing the functional agent-containing silica capsules from detaching from the textile product during rinsing.

[0128] The cleaning solution kit of the present invention can be applied to a two-component cleaning composition in which the components are stored separately in containers that allow them to be mixed at the time of use. The cleaning solution kit of the present invention can also be suitably used for textile products. [Example]

[0129] <Composition ingredients> In the examples and comparative examples, the following components were used. <Component (A)> a-1: Fragrance-containing silica capsules manufactured by the following method

[0130] (Production of a-1) Process (1) An aqueous phase component was obtained by diluting 3.0 g of Coatamine 60W (trade name, manufactured by Kao Corporation, cetyltrimethylammonium chloride, active ingredient 30% by mass) with 750 g of ion-exchanged water. To this aqueous phase component was added an oil phase component prepared by mixing 200 g of Model Fragrance A (compounds shown in Table 1) with 50 g of tetraethoxysilane (hereinafter also referred to as "TEOS"), and the mixture was emulsified at 8,500 rpm using a homomixer (manufactured by HsiangTai, model: HM-310; the same applies hereinafter) to obtain an emulsion. The volume-average particle size of the emulsified droplets was 1.4 μm. The pH of the resulting emulsion was adjusted to 3.8 using a 1% aqueous sulfuric acid solution, and then transferred to a separable flask equipped with a stirring blade and a condenser. The liquid was stirred at 200 rpm for 24 hours while maintaining the liquid temperature at 30°C, yielding an aqueous dispersion containing silica capsules having a core made of model fragrance A and a first shell made of silica.

[0131] Process (2) While stirring the aqueous dispersion obtained in step (1) at a liquid temperature of 30°C, 21 g of TEOS was added dropwise over 420 minutes. After the dropwise addition, stirring was continued for an additional 17 hours and then the mixture was cooled, thereby forming a second shell encapsulating the first shell, and an aqueous dispersion containing silica capsules in which model fragrance A was encapsulated by amorphous silica (the content of model fragrance A (functional agent) in the silica capsules was 19.4% by mass). The volume-average particle size of the silica capsules was 2.1 μm. The volume-average particle size of the emulsified droplets and silica capsules was measured using a laser diffraction / scattering particle size distribution analyzer "LA-960" (trade name, manufactured by Horiba, Ltd.). Measurements were performed using a flow cell, with the medium set to water and the refractive index set to 1.40-0i. The emulsion or the aqueous dispersion containing silica capsules was added to the flow cell, and measurements were performed at a concentration that showed a transmittance of approximately 90%, and the volume-average particle size was calculated on a volume basis. The thickness of the first shell was approximately 5 nm, and the thickness of the second shell was 5 to 30 nm.

[0132] Model Fragrance A Model fragrance A (volume-average ClogP: 3.9, specific gravity: 0.96) having the composition shown in Table 1 was used as the organic compound encapsulated in the silica capsules. The volume-average ClogP value of the model fragrance was calculated as the sum of the ClogP values ​​of the fragrance components contained in the model fragrance and their respective volume fractions in the model fragrance. In this calculation, all fragrance components contained in model fragrance A at a content of 0.5% by mass or more were taken into consideration, and fragrance components contained in model fragrance A at a content of less than 0.5% by mass, for which the specific gravity and ClogP value were known, were also included in the calculation.

[0133] [Table 1]

[0134] <(B) component> b-1: Hydroxyethyl cellulose (1), Natrosol 250JR 2540, manufactured by Ashland Japan Co., Ltd., molecular weight 150,000 b-2: Hydroxyethylcellulose (2), CELLOSIZE TM QP-100 MH, manufactured by Dow, molecular weight 1.4 million

[0135] <(C) component> c-1: Potassium salt of internal olefin sulfonate (C18IOS) with 18 carbon atoms. The mass ratio of the olefin form (potassium olefin sulfonate) to the hydroxy form (potassium hydroxyalkanesulfonate) in the C18IOS is 16 / 84. The mass ratio of the sulfonic acid group positions of the HAS form in the C18IOS is as follows: 1st / 2nd / 3rd / 4th / 5th / 6th-9th = 1.5 / 22.1 / 17.2 / 21.8 / 13.5 / 23.9. The mass ratio of (IO-1S) / (IO-2S) is 1.6. The positional distribution of sulfonic acid groups in the HAS moiety contained in the C18IOS was measured using a liquid chromatograph mass spectrometer (hereinafter abbreviated as LC-MS). Note that the peaks of internal olefin sulfonates with double bonds at positions 6 and above overlapped, making it impossible to clearly separate them. The equipment and analytical conditions used for the measurements are as follows: [Measuring equipment] LC device: "LC-20ASXR" (Shimadzu Corporation) LC-MS device: "LCMS-2020" (manufactured by Shimadzu Corporation) Column: ODS Hypersil (length: 250 mm, inner diameter: 4.6 mm, particle size: 3 μm, manufactured by Thermo Fisher Scientific) Detector: ESI (-), m / z = 349.15 (C18), 321.10 (C16), 293.05 (C14) 〔solvent〕 Solvent A: 10 mM ammonium acetate aqueous solution Solvent B: acetonitrile / water = 95 / 5 solution with 10 mM ammonium acetate added [Elution conditions] Gradient: 60% solvent A, 40% solvent B (0-15 min) → 30% solvent A, 70% solvent B (15.1-20 min) → 60% solvent A, 40% solvent B (20.1-30 min) Flow rate: 0.5ml / min Column temperature: 40℃ Injection volume: 5 μl

[0136] c-2: Polyoxyalkylene lauryl ether (C12EO9PO2EO9), a compound in which an average of 9 moles of EO are added to 1 mole of lauryl alcohol, followed by an average of 2 moles of PO and then an average of 9 moles of EO. c-3: Polyoxyalkylene lauryl ether (C12EO10), a compound in which an average of 10 moles of EO are added to 1 mole of lauryl alcohol c-4: Sodium alkylbenzenesulfonate (LAS) (Alkyl composition: C10 / C11 / C12 / C13 = 11 / 29 / 34 / 26 (mass ratio), mass average carbon number = 17.75)

[0137] <(D) component> d-1: Propylene glycol, reagent, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd. d-2: Diethylene glycol monobutyl ether, reagent, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd. <(E) component> e-1: Citric acid e-2: Monoethanolamine <(F) Component> f-1: hydrogenated castor oil, iodine value 1.5g-I2 / 100g f-2: Antifoaming agent, DOWSIL AC8066 Antifoam, manufactured by Dow Corning Toray Co., Ltd. <Water> Water prepared by adding calcium chloride and magnesium chloride to Wakayama City water in a mass ratio of 8:2 to adjust the hardness to 4°dH.

[0138] <Preparation of Cleaning Composition> Using the above components, the detergent compositions shown in Table 2 were prepared. Specifically, the detergent compositions were prepared as follows. A 5 cm long Teflon (registered trademark) stirrer was placed in a 200 mL glass beaker, and the mass was measured. Component (D) and component (C) were added in this order, and the mixture was stirred at room temperature for 5 minutes. Component (c-3) was heated to 50°C before use. Subsequently, the balance of ion-exchanged water and component (E) were added in this order, and the mixture was thoroughly stirred at room temperature. After the temperature of the composition in the beaker reached 25°C, the pH was confirmed to be 7. Then, components (F), (A), and (B) were added in this order, and the mixture was stirred for 30 minutes, yielding the cleaning composition shown in Table 2. Component (A) was prepared in the amount of active ingredient contained as a functional agent, as shown in the table. In other words, the mass % and mass ratio of component (A) in the table are based on the amount as a functional agent. During stirring, the top of the beaker was sealed with Saran Wrap (registered trademark).

[0139] <Preparation of textile products for evaluation of silica capsule disintegration rate> 1.7 kg of cotton fabric (Cotton 2003 (Tanigasashira Shoten)) was washed twice in a fully automatic washing machine (National NA-F702P) on the standard cycle (using 4.7 g of Emulgen 108 (Kao Corporation) in 47 L of water, washing for 9 minutes, rinsing twice, and spin-drying for 3 minutes), then washed three times in water only (47 L of water, washing for 9 minutes, rinsing twice, and spin-drying for 3 minutes), and dried for 24 hours at 23°C and 45% RH. The fabric was then cut into 6 cm x 6 cm pieces to prepare textile products for evaluation.

[0140] <Measurement of silica capsule disintegration rate> The treatment was carried out using a Tergotometer (Ueshima Seisakusho). 0.6 L of water was placed in a 1-liter stainless steel beaker, and 1 g of the detergent composition listed in Table 2 was added. Then, 30 g of the prepared textile product for evaluation was added, and the textile product for evaluation was washed at 85 rpm for 10 minutes while maintaining the water temperature at 20°C. After treatment, approximately 400 ml of the detergent composition was collected in the beaker and filtered using a suction filtration device (VT-500, Advantec Co., Ltd.), and the weight of the filtrate was measured. A membrane filter, Durapore HVLP04700 (0.45 μm mesh, Merck) was used as the filter paper, and undisintegrated silica capsules were collected on the membrane filter. 1 ml of the filtrate was measured and mixed with 9 ml of acetone containing benzyl benzoate as an internal standard at a concentration of 10 μg / ml, and the fragrance components contained in the filtrate were extracted into acetone. The amount of fragrance contained in the filtrate was quantified by gas chromatography using the following measuring equipment and conditions, and after correcting for the weight of the filtrate, the capsule disintegration rate was calculated using the following formula based on the weight of the fragrance in the added detergent composition. The results are shown in Table 2. A low disintegration rate is preferred. Silica capsule disintegration rate (%) = (weight of fragrance in the filtrate determined by gas chromatography) / (weight of added fragrance) × 100 [Measuring equipment] GC device: "Agilent Technologies7890B" (manufactured by Agilent) MS device: "Agilent Technologies 5977A" (Agilent) Column: DB-WAX (length: 30 m, inner diameter: 0.25 mm, film thickness: 0.25 μm, manufactured by Agilent) Inlet temperature: 240℃ Injection method: Splitless Injection volume: 1μl Temperature: 40℃ → 12.5℃ / min temperature increase → 240℃ (14min) Carrier gas: Helium Average linear velocity 51cm / min MS temperature: ion source 230℃, quadrupole temperature 150℃ Ionization method: EI Capture mode: SIM

[0141] [Table 2]

Claims

1. A detergent composition comprising the following components (A), (B), and (C), and water, wherein the mass ratio (A) / (B) of the amount of the component (A) as a functional agent to the amount of the component (B) is 30 or more and 35 or less, the mass ratio (C) / (A) of the amount of the component (A) as a functional agent to the amount of the component (C) is 15 or more and 30 or less, and the component (C) comprises components (C1) and (C2), and the mass ratio (C1) / (C2) of the amount of the component (C1) to the amount of the component (C2) is 0.2 or more and 0.5 or less. (A) Component: Silica capsules containing functional agents Component (B): Nonionic polymer (excluding the one encapsulated in silica capsules of component (A)) Component (C): (C1) one or more surfactants selected from anionic surfactants and (C2) nonionic surfactants

2. 2. The cleaner composition according to claim 1, wherein the functional agent of component (A) is at least one selected from the group consisting of fragrances, fragrance precursors, oils, antioxidants, cooling agents, warming agents, antibacterial agents, dyes, pigments, ultraviolet absorbers, silicones, solvents, and oil-soluble polymers.

3. 3. The cleaning composition according to claim 1, wherein component (B) is one or more cellulose polymers selected from the group consisting of hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, and hydroxyethyl methyl cellulose.

4. The cleaning composition according to any one of claims 1 to 3, wherein the weight-average molecular weight of component (B) is 10,000 or more and 2,000,000 or less.

5. The detergent composition according to any one of claims 1 to 4, which is for textile products.

6. A method for washing textile products, comprising washing the textile products with a cleaning liquid obtained by mixing the detergent composition according to any one of claims 1 to 5 with water, and then rinsing the textile products with water.

Images