Fiber product treatment agent composition

Abstract

To provide a fiber product treatment agent composition that suppresses the proliferation of bacteria responsible for malodorous components, and offers superior usability and cleanliness through superior masking performance.SOLUTION: A composition is produced that comprises (a) one or more specific quaternary ammonium salts (1), (b) one or more quaternary ammonium salts (2), different from the quaternary ammonium salts (1), and (c) microcapsules containing a flavor component (1), and the produced composition is used as a fiber product treatment agent composition.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a textile product treatment composition. [Background technology]

[0002] In recent years, the value consumers seek in laundry products has not only been related to the traditional ability to remove dirt, but also to a variety of fragrances and hygienic properties such as antibacterial properties.

[0003] In particular, with regard to antibacterial properties, it has been revealed that microorganisms that are generated when clothes are not completely dried produce unpleasant odors, and measures to address this are desired. A specific example of a microorganism known is Moraxella osloensis, which produces 4-methyl-3-hexenoic acid (4M3H), an unpleasant odor component, by assimilating ante-iso fatty acids that remain in clothing fibers and are derived from sebum stains that cannot be completely removed even with careful washing (Patent Document 1).

[0004] Conventionally, the above-mentioned countermeasures have been implemented by masking with fragrances, disinfecting with detergents, and antibacterial with fabric softeners. Patent Documents 2 and 3 disclose deodorizing fabric softener compositions using biodegradable quaternary ammonium compounds and benzalkonium chloride. These prior art documents also disclose that the cause of odor is bacteria.

[0005] Furthermore, Patent Documents 4 and 5 disclose techniques for liquid fabric softener compositions which contain capsules and a monoalkyl cation, have high freeze recovery properties, and exhibit good dispersibility of the encapsulated fragrance contained therein. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2012-97367 A [Patent Document 2] JP 2001-336065 A [Patent Document 3] JP 2019-131943 A [Patent Document 4] JP 2015-034371 A, [Patent Document 5] JP 2015-227515 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, bacteria grow easily when the growth conditions are right, and it is thought that, for example, by using sweat and sebum that accumulates over a long period of wear as nutrients, an unpleasant odor that is not felt immediately after wearing can be observed. In particular, M. osloensis (Moraxella osloensis) is known to be a bacterium that generates a characteristic unpleasant odor that reoccurs after a period of time if the fabric is wet with sweat or rain after wearing, even if the fabric is treated and dried using a general antibacterial detergent or fabric softener, and therefore there is a need for long-term inhibition of the growth of microorganisms.

[0008] In addition, textile product treatment agents containing quaternary ammonium salts, such as fabric softener compositions, can become unstable depending on storage conditions, and may condense into a gel-like substance, particularly when stored in a store or at home under conditions exposed to sunlight. In such cases, a concentration gradient of microcapsules in the composition is formed, leading to uneven adsorption to clothing, and sufficient deodorizing effect by masking may not be expected.

[0009] The present invention provides a textile product treatment composition that suppresses the proliferation of Moraxella osloensis, the main bacterium that produces 4-methyl-3-hexenoic acid (4M3H), a malodorous component, and provides consumers with an excellent feeling of use and a clean feeling due to its excellent masking performance. [Means for solving the problem]

[0010] The present invention relates to a textile product treatment composition containing (a) one or more quaternary ammonium salts (1) of the following general formula (1), (b) one or more quaternary ammonium salts (2) of the following general formula (2), and (c) microcapsules encapsulating a fragrance component (1). [ka] [In the formula, R 1 is an alkyl or alkenyl group having 12 to 22 carbon atoms. Y is -COO-, -CONR 5 -, -OCO- or -NR 5 CO-, where R 5 R is a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or a hydroxyalkyl group. 2 is an alkylene group having 1 to 5 carbon atoms. 3 each independently represents an alkyl group having 1 to 3 carbon atoms; -R 2 -OH or -R 2 -YR 1 However, when two or more kinds of quaternary ammonium salts (1) are contained, at least one Y is -COO- or -OCO-. 4 is an alkyl group having 1 to 3 carbon atoms. - is the counter anion. [ka] [In the formula, R 6 is an alkyl or alkenyl group having 5 to 19 carbon atoms, R 7 is an alkylene group having 1 to 6 carbon atoms or -(OR 11 )n-, where R 11 is an ethylene group or a propylene group, n is the average number of moles added and is 1 or more and 10 or less, T is -COO-, -OCO-, -CONH-, -NHCO- or a phenylene group, m is 0 or 1. R 10 R represents an alkyl group having 1 to 3 carbon atoms, a benzyl group, or a phenethyl group. 8 is R 10is an alkyl group having 1 to 3 carbon atoms, R is an alkyl or alkenyl group having 5 to 19 carbon atoms, 10 When R is a benzyl group or a phenethyl group, it is an alkyl group having 1 to 3 carbon atoms. 9 is an alkyl group having 1 to 3 carbon atoms. - is the counter anion. Effect of the Invention

[0011] According to the present invention, it is possible to provide a textile product treatment composition that inhibits the proliferation of M. osloensis, the main bacteria that produces 4-methyl-3-hexenoic acid (4M3H), one of the components that cause malodor, and imparts antibacterial effects to clothing. In addition, by maintaining a quality suitable for handling even after exposure to sunlight, it is possible to provide excellent masking performance due to the microcapsules of fragrance. Due to these antibacterial properties and the deodorizing effect due to masking, it is possible to provide clothing that does not have a bad odor and has a pleasant, lively scent. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] <Component (a)> The textile product treatment composition of the present invention contains, as component (a), a quaternary ammonium salt (1) of the above general formula (1).

[0013] In the formula (1), R 1 is, from the viewpoint of deodorizing effect and antibacterial effect, one or more hydrocarbon groups selected from saturated or unsaturated hydrocarbon groups having from 12 to 22 carbon atoms, and preferably one or more hydrocarbon groups selected from saturated or unsaturated hydrocarbon groups having from 15 to 19 carbon atoms. From the viewpoint of softening effect, it is preferably a heptadecyl group, a pentadecyl group, an 8-heptadecenyl group, or an 8,11-heptadecedienyl group. Such component (a) is generally used for the purpose of imparting a softening effect to textile products, but in the present invention, the synergistic action of components (b) and (c) described below can impart a high deodorizing effect to textile products.

[0014] R 2 From the viewpoint of deodorizing effect, each independently represents an alkylene group having 1 to 5 carbon atoms, is preferably an ethylene group or a propylene group, and is more preferably an ethylene group.

[0015] From the viewpoint of deodorizing effect, Y is preferably --COO-- or --OCO--, and more preferably --COO--.

[0016] R 3 From the viewpoint of the efficiency of synthesis of the deodorant base, it is preferable to use -R 2 -YR 1 In this case, Y is also preferably -COO- or -OCO-, more preferably -COO-.

[0017] Also, R 4 is an alkyl group having 1 to 3 carbon atoms, and is preferably a methyl group from the viewpoint of the efficiency of synthesizing the deodorant base.

[0018] X - is a counter anion, and is preferably an anion selected from a halide ion, preferably a chloride ion, an alkyl sulfate ion having from 1 to 3 carbon atoms, a fatty acid ion having from 12 to 18 carbon atoms, and a benzenesulfonate ion which may be substituted with from 1 to 3 alkyl groups having from 1 to 3 carbon atoms, more preferably an anion selected from an alkyl sulfate ion having from 1 to 3 carbon atoms, and more preferably a monomethyl sulfate ion or a monoethyl sulfate ion.

[0019] The component (a) in which Y is preferably -COO- can be prepared, for example, by a dehydration esterification reaction between a trialkanolamine having a hydroxyalkyl group having 1 to 3 carbon atoms, preferably triethanolamine, and a fatty acid, or an ester exchange reaction between the amine and a lower alcohol ester of a fatty acid, followed by a quaternization reaction with an alkylating agent. In this case, the component (a) can be produced by using a mixture of fatty acids having different carbon numbers or degrees of unsaturation as the fatty acid, or a mixture of fatty acid lower alcohol esters having different carbon numbers or degrees of unsaturation in the fatty acid moiety as the fatty acid lower alcohol ester.

[0020] Specifically, the fatty acid preferably used is a fatty acid selected from stearic acid, palmitic acid, oleic acid, linoleic acid, or a mixture thereof, or a fatty acid having a composition derived from palm oil, soybean oil, or olive oil.

[0021] The acid value of the fatty acid or fatty acid mixture used to produce component (a) is, in terms of the liquidity of the composition, preferably 180 mgKOH / g or more, more preferably 200 mgKOH / g or more, and preferably 240 mgKOH / g or less, more preferably 210 mgKOH / g or less. Furthermore, the iodine value of the fatty acid or fatty acid mixture used in producing component (a) is, in terms of the liquidity of the composition, preferably 30 g / 100 g or more, more preferably 40 g / 100 g or more, and is preferably 100 g / 100 g or less, more preferably 95 g / 100 g or less. The acid value and iodine value of a fatty acid or fatty acid mixture are values ​​measured by the method described in the Iwanami Dictionary of Physics and Chemistry, 4th Edition, Iwanami Shoten.

[0022] The content of component (a) in the textile product treatment composition of the present invention is preferably 3% by mass or more, more preferably 5% by mass or more, even more preferably 8% by mass or more, and is preferably 20% by mass or less, more preferably 18% by mass or less, even more preferably 15% by mass or less, in terms of the ability to reduce the amount used per washing and of the deodorizing effect.

[0023] <(b) Component> The textile product treatment composition of the present invention contains, as component (b), a quaternary ammonium salt (2) of the above general formula (2).

[0024] In the formula (2), R 6 From the viewpoints of deodorizing effect, antibacterial effect, and light resistance, the number of carbon atoms in the alkyl or alkenyl group is 5 or more, preferably 7 or more, and 19 or less, preferably 17 or less, more preferably 15 or less, and most preferably 13 or less.

[0025] R 7 is an alkylene group having 1 to 6 carbon atoms or -(OR 11 )n-. R 7 When R is an alkylene group, the number of carbon atoms is preferably 2 or more and 3 or less from the viewpoints of deodorizing effect, antibacterial effect, and light resistance. 7 -(OR 11 )n-, then R 11 represents an alkylene group having 2 to 3 carbon atoms, preferably an ethylene group; n represents the average number of moles added, preferably a number of 1 to 10, more preferably 5 or less.

[0026] T is -COO-, -OCO-, -CONH-, -NHCO-, or a phenylene group. m is 0 or 1. From the viewpoints of deodorizing effect, antibacterial effect, and light resistance, T is preferably -COO- or -OCO-, and m is preferably 0.

[0027] R 10 is an alkyl group having 1 to 3 carbon atoms, a benzyl group, or a phenethyl group. R 8 is R 10 is a benzyl group or a phenethyl group, R is an alkyl group having 1 to 3 carbon atoms. 10 When is an alkyl group having 1 to 3 carbon atoms, it is an alkyl or alkenyl group having 5 or more, preferably 7 or more, and 19 or less, preferably 17 or less, more preferably 15 or less, and most preferably 13 or less. From the viewpoint of deodorizing effect, antibacterial effect and light resistance, R 10 is a benzyl group and R 8 is a methyl group, or R 10 is a methyl group and R 8 is preferably an alkyl or alkenyl group having 5 to 13 carbon atoms. R 8 When is an alkyl or alkenyl group having 5 to 19 carbon atoms, the number of carbon atoms is 5 or more, preferably 7 or more, and 19 or less, preferably 17 or less, more preferably 15 or less, and most preferably 13 or less.

[0028] R 9 is an alkyl group having 1 to 3 carbon atoms, and from the viewpoints of deodorizing effect, antibacterial effect and light resistance, a methyl group is preferred.

[0029] Z - is a counter anion, and is preferably an anion selected from a halide ion, preferably a chloride ion, an alkyl sulfate ion having 1 to 3 carbon atoms, a fatty acid ion having 12 to 18 carbon atoms, and a benzenesulfonate ion which may be substituted with 1 to 3 alkyl groups having 1 to 3 carbon atoms, more preferably a methyl sulfate ion, an ethyl sulfate ion, or a halide ion, and among these, a chloride ion is more preferable.

[0030] The component (b) of the present invention not only has a deodorizing effect and an antibacterial effect, but also improves the light resistance of the textile product treatment agent containing the component (a). From the viewpoint of the deodorizing effect and the antibacterial effect, or from the viewpoint of improving the light resistance stability, the content of the component (b) in the textile product treatment composition is preferably 0.1 mass % or more, more preferably 0.2 mass % or more, even more preferably 0.5 mass % or more, and is preferably 5 mass % or less, more preferably 3 mass % or less, even more preferably 2 mass % or less.

[0031] <(c) component> The textile product treatment composition of the present invention contains, as component (c), microcapsules encapsulating a fragrance component (1).

[0032] Specifically, examples of the components of the shell of the microcapsule include silica, ethyl cellulose, hydroxypropyl methylcellulose, polyvinyl alcohol, gelatin, alginic acid, melamine, urea membrane, urethane membrane, CMC (cell membrane complex) membrane, etc. From the viewpoint of strength and release ability of the contained fragrance, silica is preferable as the component. Hereinafter, microcapsules having a shell containing silica as a component (c) are also referred to as silica capsules. The fragrance component (1) can be encapsulated in the silica capsule as a fragrance composition (1) containing one or more fragrance compounds.

[0033] <shell> The shell of the silica capsule of the present invention contains silica as a constituent component. The shell of the silica capsule of the present invention is characterized in that a part or substantially all of the structure constituting the shell is made of silica as a constituent component. The shell of the silica capsule of the present invention is preferably formed by a sol-gel reaction using an alkoxysilane as a precursor.

[0034] In addition, the shell of the silica capsule of the present invention may contain inorganic polymers other than silica as a constituent component within a range that does not impair the effects of the present invention.In the present invention, the inorganic polymer refers to a polymer that contains inorganic elements.The inorganic polymer may include a polymer that is composed of only inorganic elements, a polymer whose main chain is composed of only inorganic elements and has an organic group as a side chain or a substituent, and the like. The inorganic polymer is preferably a metal oxide containing a metal element, and more preferably a polymer formed by a reaction similar to the above-mentioned sol-gel reaction of silica using a metal alkoxide [M(OR)x] as a precursor, where M is a metal element and R is a hydrocarbon group. Examples of the metal element constituting the metal alkoxide include titanium, zirconium, aluminum, and zinc.

[0035] The alkoxysilane is preferably a tetraalkoxysilane from the viewpoints of increasing the encapsulation rate of the fragrance component (1) and of achieving good delivery performance. From the viewpoint of promoting the sol-gel reaction, the tetraalkoxysilane is preferably one having an alkoxy group having 1 to 4 carbon atoms, more preferably one or more selected from tetramethoxysilane, tetraethoxysilane, and tetraisopropoxysilane, even more preferably one or more selected from tetramethoxysilane and tetraethoxysilane, and still more preferably tetraethoxysilane.

[0036] (Manufacturing of Silica Capsules) From the viewpoints of increasing the encapsulation rate of the flavor compound, improving the long-term retention, and favorably expressing the delivery performance of the flavor component (1), the shell of the silica capsule of the present invention preferably contains silica formed by carrying out a sol-gel reaction in two stages as a constituent. That is, the silica capsule of the present invention is preferably produced by a method including the following steps 1 and 2. Step 1: A step of subjecting an emulsion obtained by emulsifying an aqueous phase component containing a cationic surfactant with an oil phase component containing a fragrance component (1) and a tetraalkoxysilane to a sol-gel reaction under acidic conditions to form silica capsules (1) having a core and a first shell containing silica as a constituent component, and obtaining an aqueous dispersion containing the silica capsules (1). Step 2: A step of adding tetraalkoxysilane to the aqueous dispersion containing the silica capsules (1) obtained in step 1 to carry out a sol-gel reaction to form silica capsules (2) having a second shell that encapsulates the first shell.

[0037] [Process 1] Step 1 is a step of subjecting an emulsion obtained by emulsifying an aqueous phase component containing a cationic surfactant with an oil phase component containing a fragrance component (1) and a tetraalkoxysilane to a sol-gel reaction under acidic conditions to form silica capsules (1) having a core and a first shell containing silica as a constituent component, and obtaining an aqueous dispersion containing the silica capsules (1).

[0038] Examples of the cationic surfactant in step 1 include alkylamine salts and alkyl quaternary ammonium salts. The alkylamine salt is preferably a salt of a secondary amine or a tertiary amine, more preferably a salt of a tertiary amine. The alkylamine salt and the alkyl quaternary ammonium salt are compounds having at least one long-chain alkyl group, and optionally, preferably, at least one group selected from a long-chain alkyl group, a short-chain alkyl group, and a benzyl group. The carbon number of the long-chain alkyl group is preferably 10 or more, more preferably 12 or more, even more preferably 14 or more, and preferably 22 or less, more preferably 20 or less, even more preferably 18 or less. The carbon number of the short-chain alkyl group is preferably 1 or more, and preferably 4 or less, more preferably 1 or 2, even more preferably 1, i.e., a methyl group. Examples of the alkylamine salt include alkylamine salts in which the long-chain alkyl group has a carbon number within the above range, such as long-chain monoalkyl monomethyl secondary amine salts and long-chain monoalkyl dimethyl tertiary amine salts. Examples of the quaternary ammonium salt include long-chain alkyl tri-short-chain alkyl quaternary ammonium salts, di-long-chain alkyl di-short-chain alkyl quaternary ammonium salts, and long-chain alkyl benzyl di-short-chain alkyl quaternary ammonium salts, each of which has a carbon number within the range described above.

[0039] Examples of the alkylamine salt include alkylamine acetates such as lauryl dimethyl ammonium acetate and stearyl dimethyl ammonium acetate. Examples of alkyltrimethylammonium salts include alkyltrimethylammonium chlorides such as lauryltrimethylammonium chloride, cetyltrimethylammonium chloride, and stearyltrimethylammonium chloride; and alkyltrimethylammonium bromides such as lauryltrimethylammonium bromide, cetyltrimethylammonium bromide, and stearyltrimethylammonium bromide. Examples of the dialkyldimethylammonium salt include dialkyldimethylammonium chlorides such as distearyldimethylammonium chloride; and dialkyldimethylammonium bromides such as distearyldimethylammonium bromide. Examples of the alkylbenzyldimethylammonium salt include alkylbenzyldimethylammonium chloride and alkylbenzyldimethylammonium bromide. Of these, the cationic surfactant is preferably a quaternary ammonium salt, more preferably an alkyltrimethylammonium salt having an alkyl group with 10 to 22 carbon atoms, even more preferably an alkyltrimethylammonium chloride having an alkyl group with 10 to 22 carbon atoms, still more preferably one or more selected from lauryltrimethylammonium chloride, stearyltrimethylammonium chloride, and cetyltrimethylammonium chloride, and even more preferably cetyltrimethylammonium chloride.

[0040] In step 1, in addition to the cationic surfactant, other emulsifiers may be further contained within a range that does not impair the effects of the present invention. Examples of other emulsifiers include polymer dispersants, nonionic surfactants, anionic surfactants, and amphoteric surfactants.

[0041] In step 1, the content of the cationic surfactant in the aqueous phase component is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, and even more preferably 0.4% by mass or more, from the viewpoint of dispersion stability of the emulsion droplets, and is preferably 10% by mass or less, more preferably 5% by mass or less, and even more preferably 2% by mass or less, from the viewpoint of suppressing the formation of emulsifier micelles due to excess emulsifier that does not contribute to the dispersion stability of the emulsion and improving encapsulation efficiency.

[0042] The amount of the oil phase components relative to the total amount of the emulsion obtained in step 1 is preferably 5% by mass or more, more preferably 10% by mass or more, and even more preferably 15% by mass or more, from the viewpoint of production efficiency, and is preferably 50% by mass or less, more preferably 45% by mass or less, and even more preferably 40% by mass or less, from the viewpoint of obtaining a stable emulsion.

[0043] The amount of tetraalkoxysilane added in step 1 is preferably 10% by mass or more, more preferably 12% by mass or more, and even more preferably 14% by mass or more, relative to the total amount of the fragrance compound in step 1, from the viewpoint of promoting the sol-gel reaction and forming a sufficiently dense shell, and is preferably 60% by mass or less, more preferably 50% by mass or less, even more preferably 40% by mass or less, and even more preferably 35% by mass or less, from the viewpoint of preventing excess tetraalkoxysilane from remaining in the fragrance compound.

[0044] Step 1 preferably includes the following steps 1-1 to 1-4. Step 1-1: preparing an aqueous phase component containing a cationic surfactant Step 1-2: Mixing the fragrance and tetraalkoxysilane to prepare the oil phase component Step 1-3: A step of mixing and emulsifying the aqueous phase component obtained in step 1-1 and the oil phase component obtained in step 1-2 to obtain an emulsion. Step 1-4: A step of subjecting the emulsion obtained in step 1-3 to a first-stage sol-gel reaction to form a silica capsule (1) having a core and a first shell made of silica.

[0045] Median diameter D of emulsion droplets in the emulsion of step 1 50 From the viewpoint of reducing the specific surface area relative to the environment outside the silica capsule and enhancing long-term retention, it is preferably 0.1 μm or more, more preferably 0.2 μm or more, and even more preferably 0.3 μm or more, and from the viewpoint of the physical strength of the silica capsule (1), it is preferably 50 μm or less, more preferably 30 μm or less, even more preferably 10 μm or less, even more preferably 5 μm or less, and even more preferably 3 μm or less. Median diameter of emulsion droplets D50 can be measured by the method described in the Examples.

[0046] The initial pH of the sol-gel reaction in step 1 is preferably 3.0 or more, more preferably 3.3 or more, and even more preferably 3.5 or more, from the viewpoint of maintaining a balance between the hydrolysis reaction and the condensation reaction of the tetraalkoxysilane, and from the viewpoint of suppressing the production of a highly hydrophilic sol and promoting the progress of encapsulation, and is preferably 4.5 or less, more preferably 4.3 or less, and even more preferably 4.1 or less, from the viewpoint of suppressing the simultaneous formation of the silica shell (1) and the aggregation of the emulsion droplets and obtaining silica capsules (1) having a dense shell.

[0047] Depending on the strength of acidity or alkalinity of the oil phase components including the fragrance composition, any acidic or alkaline pH adjuster may be used from the viewpoint of adjusting the initial pH to a desired level. The pH of the emulsion may be lower than the desired value, in which case it is preferable to adjust it using an alkaline pH adjuster, which will be described later. That is, step 1-4 may preferably be the following step 1-4'. Step 1-4': A step of adjusting the pH of the emulsion obtained in step 1-3 using a pH adjuster, carrying out a first-stage sol-gel reaction to form silica capsules (1) having a core and a first shell, and obtaining an aqueous dispersion containing the silica capsules (1).

[0048] Examples of acidic pH adjusters include inorganic acids such as hydrochloric acid, nitric acid, and sulfuric acid, organic acids such as acetic acid and citric acid, and solutions in which cation exchange resins or the like have been added to water or ethanol, and preferred are hydrochloric acid, sulfuric acid, nitric acid, and citric acid. Examples of alkaline pH adjusters include sodium hydroxide, sodium hydrogen carbonate, potassium hydroxide, ammonium hydroxide, diethanolamine, triethanolamine, trishydroxymethylaminomethane, and the like, with sodium hydroxide and ammonium hydroxide being preferred.

[0049] The reaction temperature of the sol-gel reaction in step 1 can be any value as long as it is equal to or higher than the melting point and equal to or lower than the boiling point of water contained as the aqueous phase, but from the viewpoint of controlling the balance between the hydrolysis reaction and the condensation reaction in the sol-gel reaction and forming a dense shell, it is preferable to set the temperature within a certain range, preferably 5°C or higher, more preferably 10°C or higher, even more preferably 15°C or higher, and preferably 60°C or lower, more preferably 50°C or lower, even more preferably 40°C or lower.

[0050] [Process 2] Step 2 is a step in which tetraalkoxysilane is further added to the aqueous dispersion containing the silica capsules (1) obtained in step 1 to carry out a sol-gel reaction to form silica capsules (2) having a second shell that encapsulates the first shell.

[0051] The amount of tetraalkoxysilane added in step 2 is preferably 7% by mass or more, more preferably 10% by mass or more, and even more preferably 15% by mass or more, relative to the fragrance compound in step 1, from the viewpoint of forming a second shell that encapsulates the first shell, and is preferably 200% by mass or less, more preferably 170% by mass or less, and even more preferably 150% by mass or less, from the viewpoint of suppressing the production of silica sol that disperses in the aqueous phase and improving the dispersion stability of the silica capsules.

[0052] In step 2, the tetraalkoxysilane to be added to the aqueous dispersion containing the silica capsules (1) obtained in step 1 may be added all at once, may be added intermittently in portions, or may be added continuously. From the viewpoint of forming a highly dense second shell, however, it is preferable to add it dropwise continuously. When the tetraalkoxysilane is added dropwise continuously, the drop time can be appropriately set depending on the scale of production. From the viewpoint of suppressing separation of the added tetraalkoxysilane from the aqueous dispersion, the drop time is preferably 5 minutes or more, more preferably 10 minutes or more, even more preferably 30 minutes or more, and is preferably 1200 minutes or less, more preferably 1000 minutes or less, even more preferably 500 minutes or less.

[0053] In the present invention, the total amount of tetraalkoxysilane added, i.e., the total amount of tetraalkoxysilane used in step 1 and step 2, is preferably 30% by mass or more, more preferably 35% by mass or more, even more preferably 40% by mass or more, and is preferably 250% by mass or less, more preferably 200% by mass or less, even more preferably 150% by mass or less, relative to the fragrance compound in step 1. By setting the total amount of tetraalkoxysilane added within the above range, the encapsulated fragrance compound can be maintained for a long period of time.

[0054] In the present invention, the total amount of the fragrance compound and tetraalkoxysilane in step 1 relative to the total amount of the aqueous dispersion before the addition of tetraalkoxysilane in step 2 is, from the viewpoint of improving the long-term retention of the fragrance compound, preferably 20% by mass or less, more preferably 18% by mass or less, even more preferably 15% by mass or less, and even more preferably 10% by mass or less, and from the viewpoint of production efficiency, is preferably 2% by mass or more, more preferably 3% by mass or more, and even more preferably 5% by mass or more. The adjustment of the total amount of the fragrance compound and tetraalkoxysilane in step 1 relative to the total amount of the aqueous dispersion before the addition of tetraalkoxysilane in step 2 may be performed in step 1 such that the amounts of the fragrance compound and tetraalkoxysilane in step 1 and the total amount of the aqueous dispersion obtained in step 1 are within the above-mentioned ranges, or may be performed by further adding water to the aqueous dispersion obtained in step 1 to dilute it.

[0055] From the viewpoint of production efficiency, the present invention may dilute the aqueous dispersion obtained in step 1 with water before the addition of tetraalkoxysilane in step 2. The total amount of the fragrance compound and tetraalkoxysilane in step 1 relative to the total amount of the aqueous dispersion obtained in step 1 before dilution is preferably 3% by mass or more, more preferably 5% by mass or more, even more preferably 10% by mass or more, still more preferably 15% by mass or more, and is preferably 50% by mass or less, more preferably 40% by mass or less, and even more preferably 30% by mass or less. The dilution ratio is preferably 2 times or more, more preferably 2.5 times or more, and preferably 20 times or less, more preferably 10 times or less, more preferably 7 times or less.

[0056] The reaction temperature of the sol-gel reaction in step 2 can be selected arbitrarily so long as it is equal to or higher than the melting point and equal to or lower than the boiling point of water contained as the dispersion medium, but from the viewpoint of controlling the balance between the hydrolysis reaction and the condensation reaction in the sol-gel reaction and forming a dense shell, the reaction temperature is preferably equal to or higher than 5° C., more preferably equal to or higher than 10° C., even more preferably equal to or higher than 15° C., and is preferably equal to or lower than 60° C., more preferably equal to or lower than 50° C., even more preferably equal to or lower than 40° C. The sol-gel reaction in step 1 and the sol-gel reaction in step 2 may be carried out at different reaction temperatures.

[0057] In the present invention, in step 2, an organic polymer compound may be further added to the aqueous dispersion obtained in step 1 for the purpose of stabilizing the aqueous dispersion and suppressing aggregation. Here, the organic polymer compound means a compound having a weight-average molecular weight of 5,000 or more. The organic polymer compound includes a nonionic polymer, a cationic polymer, and an anionic polymer. The nonionic polymer means a water-soluble polymer that has no electric charge in water. By using the nonionic polymer, it is possible to impart a function to the silica capsule (2) according to the intended use of the silica capsule. When a nonionic polymer, cationic polymer, or anionic polymer is used as the organic polymer compound, for example, when the silica capsules of the present invention are used in a fabric treatment composition such as a fabric softener composition, improved adsorption of the silica capsules to fibers can be expected. As used herein, the term "water-soluble polymer" refers to a polymer that, when dried at 105°C for 2 hours and allowed to reach a constant weight, dissolves in 100 g of water at 25°C in an amount of 1 mg or more.

[0058] Examples of the nonionic polymer include polymers having a structural unit derived from a nonionic monomer, water-soluble polysaccharides (cellulose-based, gum-based, starch-based, etc.) and derivatives thereof. 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 means acrylate or methacrylate. Similarly, (meth)acrylic means acrylic or methacrylic.

[0059] Examples of the cationic polymer include a polymer containing a quaternary ammonium salt group, a polymer having a nitrogen-based cationic group, a polymer that may become cationic by adjusting the pH, etc. By using a cationic polymer, the situation in which the silica capsules (1) obtained in step 1 tend to aggregate in the aqueous dispersion can be alleviated, and the generation of coarse particles, etc. can be suppressed in the subsequent step 2. Examples of cationic polymers include polydiallyldimethylammonium salts such as poly(diallyldimethylammonium chloride), poly(acrylic acid-co-diallyldimethylammonium chloride), poly(acrylamide-co-diallyldimethylammonium chloride), and poly(acrylamide-co-acrylic acid-co-diallyldimethylammonium chloride) and copolymers thereof, poly(2-(methacryloyloxy)ethyltrimethylammonium chloride), polyethyleneimine, polyallylamine, cationized cellulose, cationized guar gum, cationized tara gum, cationized fenugreek gum, and cationized locust bean gum. Among these, polydiallyldimethylammonium salts and copolymers thereof are preferred, and one or more selected from poly(diallyldimethylammonium chloride), poly(acrylic acid-co-diallyldimethylammonium chloride), and poly(acrylamide-co-acrylic acid-co-diallyldimethylammonium chloride) are more preferred, and poly(diallyldimethylammonium chloride) is even more preferred.

[0060] The cationic group equivalent of the cationic polymer is preferably 1 meq / g or more, more preferably 3 meq / g or more, even more preferably 4.5 meq / g or more, and is preferably 10 meq / g or less, more preferably 8 meq / g or less, from the viewpoint of dispersibility of the silica capsule (1), suppression of generation of coarse particles, and improvement of long-term retention. The cationic polymer may contain an anionic group, and in that case, the anionic group equivalent contained in the cationic polymer is preferably 3.5 meq / g or less, more preferably 2 meq / g or less, even more preferably 1 meq / g or less. In the present invention, the cationic group equivalent of the cationic polymer is calculated based on the monomer composition.

[0061] Examples of the anionic polymer include polymers containing monomer units having a carboxyl group, polymers containing monomer units having a sulfonic acid group, and polymers that become anionic upon pH adjustment. Examples of the anionic polymer include poly(meth)acrylic acid, polymaleic acid, poly((meth)acrylic acid-co-maleic acid), poly((meth)acrylic acid-co-maleic anhydride), poly((meth)acrylic acid-co-isobutylene), poly((meth)acrylic acid-co-styrene), poly(isobutylene-co-maleic acid), poly(styrene-co-maleic acid), carboxymethyl cellulose, etc. Incidentally, (meth)acrylic acid means acrylic acid or methacrylic acid.

[0062] The amount of the organic polymer compound added is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, even more preferably 0.2% by mass or more, and is preferably 5% by mass or less, more preferably 3% by mass or less, even more preferably 2% by mass or less, relative to the aqueous dispersion obtained in step 1.

[0063] The silica capsules (2) obtained by step 2 are obtained in a state of being dispersed in water. By producing the above steps, most of the flavor component (1) can be encapsulated in the silica capsules, so they can be used as is depending on the application. In some cases, the silica capsules can be separated and used. As a separation method, a filtration method, a centrifugation method, etc. can be used.

[0064] <Core> The core of the silica capsule according to the present invention contains a perfume ingredient (1). In the present invention, from the viewpoint of the release of fragrance when the fiber becomes wet with moisture such as sweat, it is preferable that the proportion of fragrance compounds having a logP of 2.0 or more and 5.0 or less and a vapor pressure at 25°C of 0.01 Pa or more and 8.00 Pa or less is 25 mass% or more of the total amount of fragrance compounds contained in the fragrance component (1).

[0065] In the present invention, the logP value is a coefficient indicating the affinity of an organic compound to water and 1-octanol. The 1-octanol / water partition coefficient P is the ratio of the equilibrium concentrations of a compound in each solvent when a trace amount of the compound is dissolved as a solute in a solvent consisting of two liquid phases, 1-octanol and water, and reaches distribution equilibrium, and is generally expressed in the form of their logarithm logP to the base 10. Nowadays, the value of "calculated logP (sometimes called ClogP)" calculated by a calculation program using fragment values ​​of atomic groups determined by the number of atoms constituting the compound molecule and the type of chemical bond is widely used, and in the present invention, the value of ClogP is used when selecting a compound, but this value may be considered to be equivalent to the logP value obtained experimentally. The logP value used in the present application is the ClogP value, and will be referred to as ClogP value hereinafter.

[0066] Examples of fragrance compounds having a ClogP of 2.0 or more and 5.0 or less and a vapor pressure at 25°C of 0.01 Pa or more and 8.00 Pa or less include γ-undecalactone, 2-cyclohexylidene-2-phenylacetonitrile, damascenone, δ-damascone, α-methyl-β-(pt-butylphenyl)-propionaldehyde, β-ionone, myrrhaldehyde, ethyltricyclo[5.2.1.0-2,6] Decane-2-carboxylate (frutate), 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, allyl cyclohexyl propionate, dimethyl benzyl carbinyl butyrate, tricyclodecenyl propionate, amyl salicylate, γ-methyl ionone, α-damascone , β-damascone, nerolin yara yara, 2,4,6-trimethyl-4-phenyl-1,3-dioxane, phenylhexanol, 2-methyl-4-(2,2,3-trimethyl-3-cyclopenten-1-yl)-2-buten-1-ol, dodecahydro-3a,6,6,9a-tetramethylnaphtho〔2,1-b〕furan, γ-nonalactone, methyl β-naphthyl ketone, eugenol, lyral, dimethylbenzylcarbinyl acetate, iso-damascone, 2-cyclohexylidene-2-phenyl Acetonitrile, γ-decalactone, α-methyl-3,4-methylenedioxyhydrocinnamic aldehyde, 7-methyl-3,5-dihydro-2H-benzodioxepinone, tricyclodecenyl acetate, tricyclodecenyl propionate, allyl 2-pentyloxyglycolate, 1-(2-tert-butylcyclohexyloxy)-2-butanol, citronellyloxyacetaldehyde, indole, 4-methyl-3-decen-5-ol, para-mene Tan-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, [4-(t-butyl)cyclohexyl] acetate, tetrahydrogeraniol, 2-isobutyl-4-hydroxy-4-methyltetrahydropyranol (Florosa), α-dynascone, cis-jasmone, bicyclo[3.2.1] Octane-8-1,5-dimethyloxime, 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, ethyl methylphenylglycidate, Isoeugenol, methyl isoeugenol, diphenyl oxide, 2,2,5-trimethyl-5-pentyl cyclopentanone, thymol, nerolin bromeliad, 5,6-dimethyl-8-isopropenyl, bicyclo[4.4.0]-1-decen-3-one, 3-(4-isopropylphenyl)-propanal, 4-isopropylcyclohexanemethanol, methyl anthranilate, dodecanenitrile, 3-dodecenal, and isopropyl myristate.

[0067] In addition, as the fragrance compound of fragrance component (1), a fragrance compound having a ClogP value of less than 2.0 can be used. Examples of fragrance compounds having a ClogP value of less than 2.0 include coumarin (1.5), phenylethyl alcohol (1.6), cis-3-hexenol (1.6), raspberry ketone (1.5), and heliotropin (1.8). The numbers in parentheses are ClogP values.

[0068] In addition, as the fragrance compound of the fragrance component (1), a fragrance compound having a ClogP value of more than 5.0 can be used. Examples of fragrance compounds having a ClogP value of more than 5.0 include 2-[2-(4-methyl-3-cyclohexen-1-yl)propyl]cyclopentanone (5.1), 7-acetyl-1,2,3,4,5,6,7,8-octahydro-1,1,6,7-tetramethylnaphthalene (5.2), acetyl cedrene (5.2), nerolidol (5.7), benzyl alcohol (7.1), and caryophyllene (6.3). The numbers in parentheses are ClogP values.

[0069] Furthermore, as the fragrance compound of fragrance component (1), a fragrance compound having a vapor pressure of less than 0.01 Pa can also be used. Examples of fragrance compounds having a vapor pressure of less than 0.01 Pa include 1,4-dioxacycloheptadecane-5,17-dione (0.0000585) and ethylene brassylate (0.0000585). The numbers in parentheses indicate the vapor pressure (unit: Pa).

[0070] In addition, as the fragrance compound of the fragrance component (1), a fragrance compound having a vapor pressure higher than 8.00 Pa can be used. Examples of fragrance compounds having a vapor pressure higher than 8.00 Pa include ethyl 2-methylbutyrate (1070), ethyl 2-methylpentanoate (384), limonene (193), allyl 2-pentyloxyglycolate (19.7), 2,4-dimethyl-3-cyclohexenylcarboxaldehyde (46.9), linalool (11.1), linalyl acetate (17.5), tetrahydrolinalool (9.51), 1,8-cineole (208), isobornyl acetate (14.3), ocimene (358), cis-3-hexenol (125), triplral (46.9), and styrallyl acetate (14.9). The numbers in parentheses are vapor pressures (units: Pa).

[0071] From the viewpoint of deodorizing effect, the content of component (c) in the textile product treatment composition of the present invention, as the fragrance component (1) in the microcapsules, is preferably 0.02 mass % or more, more preferably 0.07 mass % or more, even more preferably 0.1 mass % or more, and preferably 1.0 mass % or less, more preferably 0.7 mass % or less, even more preferably 0.5 mass % or less.

[0072] Furthermore, the microcapsules of component (c) may contain at least one selected from diluents, solvents, and solidifying agents in addition to the fragrance component (1). Examples of the diluent or solvent include ethylene glycol, propylene glycol, dipropylene glycol, and glycerin, and also include fatty acid alcohols, lower alcohol esters of fatty acids, and glycerin esters of fatty acids.

[0073] <(d) component> The textile product treatment composition of the present invention preferably further contains a fragrance component (2) as component (d). Examples of the fragrance component (2) include natural or synthetic fragrances that are generally used in textile product treatment compositions. For example, the fragrances described in "Synthetic Fragrances: Chemistry and Product Knowledge" by Genichi Indo, published by The Chemical Daily in 1969, and "Perfume and Flavor Chemicals" by STEFFEN ARCTANDER, published by MONTCLAIR, NJ in 1969, can be used. The fragrance used in the present invention is an organic compound known to be used as a fragrance, and the fragrances described in "Practical Knowledge of Fragrances and Fragrances" (by Nakajima Mototaka, published by Sangyo Tosho Co., Ltd. on June 21, 1995) can be used in appropriate combination according to the fragrance tone and purpose. Furthermore, as a fragrance, a fragrance component having a hydroxyl group described in JP-A-2009-256818 can be used in combination as a silicate ester for the purpose of improving the duration and lingering of a fragrance. Also, fragrance components and fragrance compositions described in patent documents for fabric softeners, starches, styling agents, or other finishing agents known as laundry finishing agents can be used.

[0074] Examples of fragrance compounds that can be suitably used as the fragrance component (2) in the present invention include ethers such as fatty acid ethers, aromatic ethers (excluding hydroxyphenyl ethers), etc., oxides such as fatty acid oxides, oxides of terpenes, etc., acids such as acetals, ketals, phenols, hydroxyphenyl ethers, fatty acids, terpene carboxylic acids, hydrogenated aromatic carboxylic acids, aromatic carboxylic acids, etc., acid amides, nitro musks, nitriles, amines, pyridine, quinoline, pyrrole, indole, and other nitrogen-containing compounds. The fragrance component (2) can be used as a fragrance composition (2) containing one or more of these fragrance compounds.

[0075] When the textile product treatment composition of the present invention contains component (d), the content of component (d) is preferably 0.1 mass% or more, more preferably 0.3 mass% or more, even more preferably 0.5 mass% or more, and preferably 2 mass% or less, more preferably 1.5 mass% or less. In addition, the mass ratio of component (d) to component (c), component (c) / component (d), is 0.01 or more, preferably 0.03 or more, and 2 or less, preferably 1 or less, particularly preferably 0.5 or less, from the viewpoints of light fastness and deodorizing effect.

[0076] <(e) component> The textile product treatment composition of the present invention preferably contains, as component (e), a nonionic surfactant selected from the following general formula (e-1) and general formula (e-2). R 1g -O-[(C2H4O) s (C3H6O) t ]-H (e-1) [In the formula, R 1g is an alkyl or alkenyl group having 8 or more, preferably 10 or more, and 18 or less, preferably 16 or less, carbon atoms. s and t are the average number of moles added, s being 6 or more, preferably 10 or more, and 50 or less, preferably 40 or less, and t being 0 or more, preferably 1 or more, and 5 or less, preferably 3 or less. The ethylene group (C2H4O) and the propylene group (C3H6O) are bonded in a random or block manner. [ka] [In the formula, R 2g is an alkyl or alkenyl group having 8 or more carbon atoms, preferably 10 or more, and 18 or less, preferably 16 or less. -A< is -N< or -C(O)N<, u and v are each independently a number of 0 or more and 40 or less, and u+v is a number of 5 or more and 60 or less. R 3g , R 4g are each independently a hydrogen atom or an alkyl group having 1 to 3 carbon atoms.

[0077] When the textile product treatment composition of the present invention contains component (e), the content thereof is preferably 0.5% by mass or more, more preferably 1% by mass or more, from the viewpoint of light resistance, and is preferably 10% by mass or less, more preferably 5% by mass or less.

[0078] The textile product treatment composition of the present invention may contain an inorganic salt as component (f) from the viewpoint of improving storage stability. As the inorganic salt, from the viewpoint of improving storage stability, one or more types selected from sodium chloride, calcium chloride, and magnesium chloride are preferable. When the textile product treatment composition of the present invention contains component (f), the content thereof is preferably 0.01 mass % or more, more preferably 0.05 mass % or more, and preferably 1 mass % or less, more preferably 0.5 mass % or less.

[0079] The textile product treatment composition of the present invention preferably further contains an acidic compound as component (g) from the viewpoint of adjusting the pH of the textile product treatment composition concentrate to 2.5 or more and 4.0 or less for the purpose of suppressing hydrolysis of the quaternary ammonium salt (1), which is component (a). The acidic compound may be an inorganic acid or an organic acid. Specific examples of inorganic acids include hydrochloric acid and sulfuric acid. Specific examples of organic acids include monovalent or polyvalent carboxylic acids having 1 to 10 carbon atoms, or monovalent or polyvalent sulfonic acids having 1 to 20 carbon atoms. More specifically, one or more selected from methylsulfuric acid, ethylsulfuric acid, p-toluenesulfonic acid, (o-, m-, p-)xylenesulfonic acid, benzenesulfonic acid, dodecylbenzenesulfonic acid, glycolic acid, methylglycine diacetic acid, ethylenediaminetetraacetic acid, citric acid, benzoic acid, and salicylic acid may be mentioned. Among these, one or more selected from methylglycine diacetic acid, ethylenediaminetetraacetic acid, and citric acid are preferred. There is no particular limitation on the amount of the acidic compound to be added, and it can be used appropriately so that the pH falls within the above range.

[0080] The textile product treatment composition of the present invention may contain a chelating agent as component (h) from the viewpoint of suppressing changes in hue, fading of dyes, and deterioration of fragrance during long-term storage. Preferred examples of the chelating agent include ethane-1-hydroxy-1,1-diphosphonic acid, ethylenediaminetetraacetic acid, methylglycinediacetic acid, hydroxyethyliminodiacetic acid, ethylenediaminedisuccinic acid, L-glutamic acid-N,N-diacetic acid, N-2-hydroxyethyliminodiacetic acid, citric acid, succinic acid, and alkali metal salts and ammonium salts thereof, such as sodium salts and potassium salts. When the textile product treatment composition of the present invention contains component (h), the content thereof is preferably 0.001 mass % or more, more preferably 0.005 mass % or more, and preferably 0.5 mass % or less, more preferably 0.1 mass % or less.

[0081] <Component (i)> In the textile product treatment composition of the present invention, an antioxidant such as butylhydroxytoluene (BHT) can be used from the viewpoint of suppressing deterioration of the substrate, and dyes and pigments generally used in textile product treatment compositions can be used from the viewpoint of aesthetics and preventing coloration during long-term storage. Furthermore, a preservative, antibacterial, and antifungal agent commercially available under the trade name Proxel BDN can also be used. Benzoic acid and its salts can also be used as preservative, antibacterial, and antifungal agents.

[0082] The textile product treatment composition of the present invention is suitable for textile products such as clothing and bedding. The clothing is used for washing clothing such as clothes, towels, bedding, and textile products for bedding (sheets, pillowcases, etc.). Other washable textile products can also be washed as clothing in the present invention. In the present invention, the textile product means fabrics such as woven fabrics, knitted fabrics, and nonwoven fabrics using these various fibers, and textile products obtained using them, such as undershirts, T-shirts, dress shirts, hats, handkerchiefs, towels, and masks. Preferred textile products are woven fabrics such as woven fabrics and knitted fabrics, and woven textile products.

[0083] <Examples and Comparative Examples> The present invention will be described in detail below with reference to examples and comparative examples, but the present invention is not limited to the following descriptions.

[0084] (a) Ingredients <Synthesis Example 1: Synthesis of component (a)> A condensation product consisting mainly of N,N-dialkanoyloxyethyl-N-hydroxyethylamine was obtained by dehydration esterification of a fatty acid with an acid value of 206.9 mgKOH / g, which was derived from palm oil, with triethanolamine at a reaction molar ratio of 1.65 / 1 (fatty acid / triethanolamine). Next, the amine value of this condensate was measured, and 0.95 equivalents of dimethyl sulfate was used to quaternize the condensate according to a standard method, to obtain a mixture of ester-type dialkylammonium salts containing 10% by mass of ethanol, mainly composed of N,N-dialkanoyloxyethyl-N-hydroxyethyl-N-methylammonium methyl sulfate, as the quaternary ammonium salt (1) of component (a). However, the term "alkanoyl" used here includes the meaning of residues derived from unsaturated fatty acids other than saturated fatty acids, such as alkenoyl, since alkanoyl is a fatty acid residue of palm oil as a raw material. The preparation procedure and reaction conditions were performed according to Synthesis Example 2 of JP 2010-209493 A.

[0085] (b) Component As component (b), the following compound was used as a quaternary ammonium salt (2). (b-1) Benzalkonium chloride (b-2) Didecyldimethylammonium chloride In addition, (b-3) trimethyllaurylammonium chloride was also used as a comparative compound for the above (b-1) and (b-2).

[0086] (c) Component A fragrance composition containing the fragrance compounds shown in Table 1 in the amounts shown was used as the fragrance component (1) encapsulated in the silica capsules of component (c). The proportion of fragrance compounds with a ClogP of 2.0 or more and 5.0 or less and a vapor pressure of 0.01 Pa or more and 8.00 Pa or less in fragrance component (1) was 31.5 mass%. The fragrance components in Table 1 are referred to as fragrance components (1-1).

[0087] [Table 1]

[0088] <Synthesis Example 1> Synthesis of (c) (Process 1) 1.49 g of Coatamin 60W (trade name, manufactured by Kao Corporation, cetyltrimethylammonium chloride, active content 30% by mass) was diluted with 88.52 g of ion-exchanged water to obtain an aqueous phase component. An oil phase component was added to this aqueous phase component, which was prepared by mixing 24.13 g of the fragrance component (1) in the blending ratio shown in Table 1 above and 6.01 g of tetraethoxysilane (hereinafter also referred to as "TEOS"), and the mixture was emulsified using a homomixer (manufactured by HsiangTai, model: HM-310, the same applies below) at a rotation speed of 6,500 rpm for 5 minutes and then at a rotation speed of 8,000 rpm for 5 minutes to obtain an emulsion. The median diameter D of the emulsified droplets at this time was 50 was 1.09 μm. The pH of the resulting emulsion was adjusted to 3.7 using 0.2 N hydrochloric acid, and then the emulsion was transferred to a separable flask equipped with a stirring blade and a cooler. The liquid was stirred for 24 hours while maintaining the liquid temperature at 30°C, to obtain an aqueous dispersion containing silica capsules (1) having a core made of fragrance component (1) and a first shell made of silica.

[0089] (Process 2) To 100.22 g of the aqueous dispersion obtained in step 1, 305.58 g of water was added, and the resulting mixture was stirred at a liquid temperature of 30° C., while 24 g of TEOS was added. Stirring was continued for 24 hours, and then the mixture was cooled to form a second shell encapsulating the first shell, thereby obtaining an aqueous dispersion containing silica capsules (2) in which the flavor component (1) was encapsulated by amorphous silica. The median diameter D of the silica capsules (2) was50 The median diameter D of the emulsion droplets and silica capsules (2) was 3.0 μm. 50 was measured using a laser diffraction / scattering particle size distribution analyzer "LA-960" (product name, manufactured by Horiba, Ltd.). A flow cell was used for the measurement, the medium was water, and the refractive index was set to 1.40-0i. The emulsion or the aqueous dispersion containing silica capsules was added to the flow cell, and the measurement was performed at a concentration that showed a transmittance of approximately 90%, and the median diameter D 50 asked for. The thickness of the first shell was about 5 nm, and the thickness of the second shell was 5 to 30 nm.

[0090] (d) Ingredients A fragrance composition containing the fragrance compounds shown in Table 2 in the amounts shown was used as component (d). The fragrance component in Table 2 is referred to as fragrance component (2-1).

[0091] [Table 2]

[0092] (e) Component As the nonionic surfactant of component (e), polyoxyethylene lauryl ether having an average added mole number of oxyethylene groups of 30 moles was used.

[0093] Calcium chloride was used as the inorganic salt of component (f).

[0094] Citric acid was used as the acidic compound of component (g).

[0095] As the chelating agent for component (h), trisodium methylglycine diacetate was used.

[0096] As component (i), Proxel BDN (Arch Chemical Japan) was used.

[0097] <Preparation of Textile Product Treatment Composition> A 300 mL glass beaker (inner diameter 7 cm, height 11 cm) was charged with ion-exchanged water in an amount equivalent to 90% of the amount required for a finished textile product treatment composition with a mass of 200 g, as well as components (e), (g), (h), and (i), and the temperature of the ion-exchanged water was adjusted to 60±2°C using a water bath. Next, a stirring blade (turbine-type stirring blade, three blades, blade length 2 cm) attached to a Three-One Motor (manufactured by Shinto Scientific Co., Ltd., "TYPE HEIDON 1200G") was placed at a height of 1 cm from the bottom of the beaker, and while stirring at a rotation speed of 300 rpm, a quaternary ammonium salt mixture, which is component (a) that had been melted and mixed in advance at 65°C, was added, and the mixture was then stirred at 300 rpm for 10 minutes while heating to 60±2°C. Next, the mixture was cooled to 30±2°C using a 5°C water bath. Components (b), (c), (d), and (f) were added in sequence and stirred for 5 minutes. Ion-exchanged water was then added to the mixture to a final mass of 200g, and the mixture was stirred for 5 minutes to obtain a textile product treatment composition. The pH was adjusted to 3.5. The content of each component in each composition is shown in Table 3 for the Examples and Comparative Examples (units are parts by mass).

[0098] [Table 3]

[0099] The obtained textile product treatment compositions of Examples 1 to 8 and Comparative Examples 1 to 6 were subjected to the following two tests.

[0100] [Deodorization test] Used undergarments (100% cotton, T-shirts) that had been used for 6 months to 1 year and had been washed and collected from ordinary households were used. 4.5 L of city water adjusted to 20°C was poured into an electric bucket-type washing machine ("MiniMini", model number: NA-35) manufactured by National (Panasonic Corporation), and the textile product treatment composition of the examples and comparative examples was added in an amount of 10 g per 1.5 kg of cotton undergarments and stirred for 1 minute. Then, one piece of cotton undergarment was added and stirred for another 5 minutes. The undergarments were dehydrated for 5 minutes in the dehydration tub of a two-tub washing machine, and immediately after dehydration, the undergarments were wrapped in plastic wrap, sealed in a plastic bag with a zipper, and stored in a high-temperature oven at 30°C for 5 hours to generate a damp odor. Then, the undergarments were dried for 24 hours in a room at 20°C / 60% RH. A cloth measuring 20cm x 20cm was cut from the prepared underwear and used for deodorization evaluation by 10 odor evaluation panelists. After moistening the cloth with 10-20% owf water using a spray, the cloth was folded into four and left to stand for a few seconds, then opened and the scent at the intersection of the folds was smelled and rated as follows: +3: A pleasant, vibrant fragrance. +2: The scent has a strong sense of dynamism. +1: I don't feel much dynamism in the scent. 0: I don't sense any vitality in the fragrance.

[0101] In addition to the above, if a foul odor was detected, a score was added according to the following criteria. -1: Slightly foul odor. -2: Smells bad. -3: Strongly unpleasant odor. A score was calculated for each panelist, and the average score of the 10 panelists was used to evaluate the product as follows: ◎: 2.2 points or more 〇:1.6~2.2 points △:1~1.6 points ×: 1 point or less The results are shown in Table 3.

[0102] [Light resistance test] The test was carried out using a low-temperature cycle xenon fade meter (XL75, manufactured by Suga Test Instruments Co., Ltd.). A container (PE, PA mixed) filled with 400g of a sample prepared to a specified composition was placed in the tester with the largest surface area facing the lamp, and light was irradiated under the following irradiation conditions. The tester was then stopped and left for 18 hours (1 cycle). After 11 cycles, the container was carefully removed from the tester without disturbing the internal liquid. (Irradiation conditions) ·Setting irradiance: 42W / m 2 - Set radiation time: 6 hours (Cumulative irradiance: 0.9 MJ / m 2 ) Black panel temperature: 45℃

[0103] This was observed by 10 evaluation panelists and scored as follows: +2: The gel-like matter is significantly less than the standard (Comparative Example 1). +1: Less gel-like matter than standard. 0: A gel-like substance is formed to the same extent as the standard. The evaluation was made based on the average scores of 10 panelists as follows: ◎: 1.6 points or more 〇: 1.2 to 1.6 points or more △:0.8~1.2 points ×: 0.8 points or less The results are shown in Table 3.

[0104] All of the compositions of Examples 1 to 8 gave good results in the deodorizing test. No deodorizing effect was observed in Comparative Example 1, which did not contain the components (b) and (c), Comparative Example 2, which did not contain the component (a), Comparative Example 3, which did not contain the component (b), and Comparative Example 4, which did not contain the component (c). Furthermore, Comparative Examples 5 and 6, which used lauryl trimethyl ammonium chloride having three methyl groups as the component (b), had a deodorizing effect inferior to that of Examples 1 to 8. Moreover, Examples 1 to 8 produced less gel-like matter than the reference Comparative Example 1. Comparative Examples 2 and 4 also produced less gel-like matter, but Comparative Example 3, which did not contain component (b), and which used lauryltrimethylammonium chloride having three methyl groups as component (b), produced more gel-like matter than Examples 1 to 8. From the above results, it is clear that by using the components (a) to (c) specified in the present application, good deodorizing effects and suppression of gel-like matter after exposure to sunlight are achieved, thereby solving the problem of the present application.

[0105] Table 4 shows examples of formulations having the effects of the present invention. Note that components (c-1) to (c-3) and components (d-1) to (d-3) are components shown in Table 5, where (c-1) is the same component as (c) above, and (c-2) and (c-3) were produced according to Examples 7 and 14 of International Patent No. 2021 / 132726, respectively.

[0106] [Table 4]

[0107] [Table 5]

Claims

1. A textile product treatment composition comprising: (a) one or more quaternary ammonium salts (1) of the following general formula (1); (b) one or more quaternary ammonium salts (2) of the following general formula (2); and (c) microcapsules encapsulating a fragrance component (1). 【Chemical 1】 [In the formula, R 1 is an alkyl or alkenyl group having 12 to 22 carbon atoms. Y is —COO—, —CONR 5 -, -OCO- or -NR 5 CO-, where R 5 is a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or a hydroxyalkyl group. 2 is an alkylene group having 1 to 5 carbon atoms. 3 each independently represents an alkyl group having 1 to 3 carbon atoms; 2 -OH or -R 2 -Y-R 1 However, when two or more types of quaternary ammonium salts (1) are contained, at least one Y is —COO— or —OCO—. 4 is an alkyl group having 1 to 3 carbon atoms. － is the counter anion. 【Chemistry 2】 [In the formula, R ６ is an alkyl or alkenyl group having 5 to 19 carbon atoms, and R ７ is an alkylene group having 1 to 6 carbon atoms or -(O-R １１ )n-, where R １１ represents an ethylene group or a propylene group, n represents the average number of moles added and is 1 or more and 10 or less, T represents -COO-, -OCO-, -CONH-, -NHCO- or a phenylene group, and m is 0 or 1. R １０ represents an alkyl group having 1 to 3 carbon atoms, a benzyl group, or a phenethyl group. ８ is R １０ is an alkyl group having 1 to 3 carbon atoms, R is an alkyl or alkenyl group having 5 to 19 carbon atoms; １０ When R is a benzyl group or a phenethyl group, it is an alkyl group having 1 to 3 carbon atoms. 9 is an alkyl group having 1 to 3 carbon atoms. - is the counter anion.

2. 2. The textile product treatment composition according to claim 1, wherein Y is --COO--.

3. R ３ Ga-R ２ -COO-R １ 2. The textile product treatment composition according to claim 1, wherein

4. X － 2. The textile product treating composition according to claim 1, wherein is a chloride ion.

5. 2. The textile product treatment composition according to claim 1, wherein m is 0.

6. R １０ 2. The textile product treatment composition according to claim 1, wherein is a benzyl group.

7. R １０ is an alkyl group having 1 to 3 carbon atoms, and R ８ 2. The textile product treatment composition according to claim 1, wherein is an alkyl or alkenyl group having from 5 to 19 carbon atoms.

8. Z － 2. The textile product treating composition according to claim 1, wherein is a chloride ion.

9. 2. The textile product treatment composition according to claim 1, wherein the microcapsules of component (c) are microcapsules having a shell (second shell) containing silica and a core (first shell) containing a fragrance compound inside the shell and silica encapsulating the core.

10. (c) Median diameter D of the microcapsules of component ５０ The textile product treatment composition according to claim 9, wherein the particle size is 0.1 μm or more and 50 μm or less.

11. 10. The textile product treatment composition according to claim 9, wherein the shell of the microcapsules of component (c) contains silica as a constituent component formed by a sol-gel reaction of an alkoxysilane.

12. 12. The textile product treatment composition according to claim 11, comprising, as a constituent component, silica formed by carrying out the sol-gel reaction in two stages.

13. The textile treatment composition according to claim 11, wherein the alkoxysilane is tetraethoxysilane.

14. 2. The textile product treatment composition according to claim 1, wherein the fragrance component (1) of the component (c) contains one or more fragrance compounds, and the proportion of fragrance compounds having a log P of 2.0 or more and 5.0 or less and a vapor pressure at 25°C of 0.01 Pa or more and 8.00 Pa or less is 25 mass% or more of the total amount of the fragrance compounds.

15. 2. The textile product treatment composition according to claim 1, comprising 3% by mass or more and 20% by mass or less of component (a), 0.1% by mass or more and 5% by mass or less of component (b), and 0.005% by mass or more and 0.5% by mass or less of fragrance component (1) of component (c).

16. The textile product treatment composition according to claim 1, further comprising a fragrance component (2) (d) containing one or more fragrance compounds that are not encapsulated in microcapsules.

17. The textile product treatment composition according to claim 1, further comprising a nonionic surfactant as component (e).

18. A method for suppressing odors from clothes dried indoors, which comprises contacting the textile product treatment composition according to any one of claims 1 to 17 with clothes during washing and then drying the clothes indoors.

19. A deodorizing composition comprising the textile product treating composition according to any one of claims 1 to 17.

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