Textile product treatment composition

Abstract

To provide a composition for a fiber product treatment agent that emits a good fragrance when a fiber product is worn, particularly when the fiber product is wetted with, for example, the user's sweat.SOLUTION: A composition for a fiber product treatment agent contains the following component (a) and component (b), and water. Component (a): a microcapsule that has a shell containing silica and a core that lies inside the shell and contains a fragrant compound. Component (b): a quaternary ammonium salt compound represented by formula (1), wherein, when an acyl group is considered as a fatty acid, the proportion of at least one selected from oleic acid, linoleic acid and linolenic acid is 60 mass% or more and 100 mass% or less of all the fatty acids constituting the acyl group [where R1, R2, and R3 independently represent a residue of a C16-22 fatty acid from which OH has been removed (referred to as the "acyl group"), or a hydrogen atom, R4 is a C1-3 alkyl group, and X- is an anion].SELECTED DRAWING: None

Description

[Technical Field]

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

[0002] Consumers are becoming increasingly interested in scents when washing, drying, and wearing clothes, and the market for liquid fabric softeners and fragrances that appeal to fragrance-related claims is growing significantly. However, since the fiber treatment compositions used in ordinary households are applied to fiber products via water, the fragrance may not adhere sufficiently to the fiber, or the fragrance may volatilize from the fabric during or over time after drying, resulting in a weaker scent. To address such problems, for example, Patent Document 1 discloses a fabric softening composition that contains a specific long-lasting perfume composition and improves the longevity of the perfume on fabrics.

[0003] Patent Document 2 discloses a sustained-release fragrance composition that can be used on clothing and that uses a mixture of a dibasic acid monoester and / or a dibasic acid diester with ethylene glycol or propylene glycol for the purpose of maintaining a fragrance for a long time. Patent Document 3 also discloses that a fragrance can be maintained for a long time by using an aqueous liquid containing emulsion particles obtained by emulsifying and dispersing a mixture of a fragrance composition and an oil or fat having a melting point of 30°C or higher at normal pressure in water.

[0004] Meanwhile, as a conventional technique for improving fragrance retention during wear, attempts have been made to incorporate microencapsulated fragrances. Patent Document 4 describes an encapsulated fragrance containing a fragrance composition having a flash point in the range of 50 to 130°C as a core substance. Patent Document 5 describes that fragrance retention is improved by using microcapsules encapsulating fragrances produced by the core-shell method. Patent Document 6 describes that the combined use of microcapsules encapsulating fragrances and polymers containing specific amines enables the fragrance to be applied uniformly at high concentrations to multiple different surfaces.

[0005] Patent Document 7 discloses a liquid fabric softener composition containing water and a component (A) containing at least one selected from specific tertiary amine compounds, their acid salts, and their quaternary derivatives, a component (B) consisting of microcapsules encapsulating a fragrance containing at least 90% by mass of a fragrance compound having a logP value of 2.0 to 6.0, a component (C) consisting of a fragrance precursor that is an ester of a specific fragrance and a specific fatty acid ester or fatty acid diester, and water, with the aim of achieving not only normal fragrance persistence but also excellent odor release when the wearer sweats. Patent Document 8 discloses a textile product treatment composition containing a silicate ester compound of a fragrance compound and a specific fragrance, improving the fragrance's longevity on fabrics. Patent Document 9 discloses a fabric softener fragrance composition containing a silicate ester compound and a specific long-lasting fragrance. The silicate ester compound has the property of releasing the fragrance upon hydrolysis of the ester bond upon moisture absorption. [Prior art documents] [Patent documents]

[0006] Patent Document 1 Japanese Patent Publication No. 11-504994 Patent Document 2: Japanese Patent Application Laid-Open No. 2003-313580 Patent Document 3: JP 2012-72539 A Patent Document 4: Japanese Patent Application Laid-Open No. 2006-249326 Patent Document 5 Special Publication No. 2011-517323 Patent Document 6: JP 2018-172687 A Patent Document 7: JP 2017-008446 A Patent Document 8: Japanese Patent Application Laid-Open No. 2009-256818 Patent Document 9: JP 2011-063674 A Summary of the Invention [Problem to be solved by the invention]

[0007] In recent years, several technologies have been proposed for sustaining the fragrance of textiles. However, the fragrances added to textile treatment agents are difficult to adsorb onto textiles and remain on the textile surface, causing the odor to quickly diffuse into the air. Depending on the base, the odor may even disappear during drying. Microencapsulation of fragrances has been proposed as a means of improving the fragrance's effectiveness, but there are still challenges with fragrance release in situations involving moisture, such as when sweating, when fragrance release from textiles is extremely important. Furthermore, the creation of fragrance precursors has been proposed as a means of improving the fragrance's effectiveness in situations involving moisture, but the types of fragrances that can be used are limited, limiting the ability to satisfy a wider range of preferences.

[0008] The present invention provides a textile product treatment composition that gives off a pleasant fragrance when the treated textile product is worn, particularly when the treated textile product is wet with water due to perspiration or the like. [Means for solving the problem]

[0009] The inventors discovered that by using specific capsules that have the property of collapsing when dried after adhering to fibers in an aqueous medium and a quaternary ammonium salt compound having a specific unsaturated fatty acid as the acyl group, it is possible to appropriately control the collapse of the capsules when they dry, thereby providing good fragrance release when rewetted and long-lasting fragrance after drying, and thus arrived at the present invention.

[0010] The present invention relates to a textile product treatment composition containing the following components (a) and (b), and water: Component (a): a microcapsule having a shell containing silica and a core containing a fragrance compound inside the shell Component (b): A quaternary ammonium salt compound represented by the following general formula (1), in which, when the acyl group is considered to be a fatty acid, the proportion of one or more acids selected from oleic acid, linoleic acid, and linolenic acid is 60% by mass or more and 100% by mass or less of the total fatty acids constituting the acyl group.

[0011] [ka]

[0012] [In the formula, R 1 , R 2 , R 3 are each independently a residue (called an acyl group) obtained by removing OH from a fatty acid having 16 to 22 carbon atoms, or a hydrogen atom, and R 4 is an alkyl group having 1 to 3 carbon atoms, and X - is an anion. [Effects of the Invention]

[0013] According to the present invention, there is provided a textile product treatment composition that gives off a pleasant fragrance when the treated textile product is worn, particularly when the treated textile product is wet with water due to perspiration or the like. DETAILED DESCRIPTION OF THE INVENTION

[0014] <Textile product treatment composition> <Component (a)> The textile treatment composition of the present invention contains, as component (a), microcapsules having a shell containing silica as a constituent and a core containing a fragrance compound inside the shell. Silica is a substance whose structural unit is silicon dioxide. Hereinafter, microcapsules having a shell containing silica as a constituent, such as the microcapsules of component (a), will also be referred to as silica capsules. The fragrance compound can be blended into the silica capsules as a fragrance composition containing multiple fragrance compounds.

[0015] <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. In the present invention, the "sol-gel reaction" refers to a reaction in which an alkoxysilane undergoes hydrolysis and polycondensation to form silica, a component of the shell, through a sol and a gel state. Specifically, for example, tetraalkoxysilane is hydrolyzed, and a silanol compound undergoes a dehydration condensation reaction and a dealcoholization condensation reaction to generate a siloxane oligomer, and the dehydration condensation reaction further proceeds to form silica.

[0016] 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. The inorganic polymer is preferably a metal oxide containing a metal element or a metalloid element, and more preferably a polymer formed by a reaction similar to the sol-gel reaction of silica using a metal alkoxide [M(OR)x] as a precursor, where M is a metal or metalloid element and R is a hydrocarbon group. Examples of metal or semimetal elements constituting the metal alkoxide include titanium, zirconium, aluminum, and zinc.

[0017] The alkoxysilane is preferably a tetraalkoxysilane from the viewpoint of increasing the encapsulation rate of the fragrance and exhibiting good delivery performance. From the viewpoint of promoting the sol-gel reaction, the tetraalkoxysilane is preferably one having an alkoxy group having from 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.

[0018] (Manufacturing of silica capsules) From the viewpoints of increasing the encapsulation rate of the fragrance compound, improving the long-term retention, and achieving good delivery performance of the fragrance compound, the shell of the silica capsule of the present invention preferably contains, as a constituent, silica formed by a two-stage sol-gel reaction. 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 and an oil phase component containing a fragrance compound and a tetraalkoxysilane to a sol-gel reaction under acidic conditions to form silica capsules (1) having a core and a first shell composed of silica, 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, thereby forming silica capsules having a second shell encapsulating the first shell.

[0019] [Process 1] Step 1 is a step of subjecting an emulsion obtained by emulsifying an aqueous phase component containing a cationic surfactant and an oil phase component containing a fragrance compound and a tetraalkoxysilane to a sol-gel reaction under acidic conditions to form silica capsules (1) having a core and a first shell composed of silica, and obtaining an aqueous dispersion containing the silica capsules (1).

[0020] Examples of cationic surfactants used in step 1 include alkylamine salts and alkyl quaternary ammonium salts. The alkylamine salts are preferably salts of secondary amines or tertiary amines, more preferably salts of tertiary amines. The alkylamine salts and alkyl quaternary ammonium salts 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, and 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, and even more preferably 1, i.e., a methyl group. Examples of alkylamine salts include alkylamine salts in which the long-chain alkyl group has the number of carbon atoms in the above range, such as long-chain monoalkyl monomethyl secondary amine salts and long-chain monoalkyl dimethyl tertiary amine salts. Examples of quaternary ammonium salts 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 long-chain alkyl group and a short-chain alkyl group within the above-mentioned range of carbon numbers.

[0021] Examples of alkylamine salts include alkylamine acetates such as lauryl dimethylamine acetate and stearyl dimethylamine 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 dialkyldimethylammonium salts include dialkyldimethylammonium chlorides such as distearyldimethylammonium chloride; and dialkyldimethylammonium bromides such as distearyldimethylammonium bromide. Examples of alkylbenzyldimethylammonium salts 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, even more preferably one or more selected from lauryltrimethylammonium chloride, stearyltrimethylammonium chloride, and cetyltrimethylammonium chloride, and even more preferably cetyltrimethylammonium chloride.

[0022] In step 1, other emulsifiers may be contained in addition to the cationic surfactant, provided that the effects of the present invention are not impaired. Examples of other emulsifiers include polymer dispersants, nonionic surfactants, anionic surfactants, and amphoteric surfactants.

[0023] In step 1, the content of 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 emulsified 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 by excess emulsifier that does not contribute to the dispersion stability of the emulsion and improving encapsulation efficiency.

[0024] The amount of 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.

[0025] 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 fragrance compounds in step 1, from the viewpoint of accelerating 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 compounds.

[0026] Step 1 preferably includes the following steps 1-1 to 1-4. Step 1-1: Step of preparing an aqueous phase component containing a cationic surfactant Step 1-2: Mixing fragrance and tetraalkoxysilane to prepare an 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 silica capsules having a core and a first shell composed of silica.

[0027] The stirring means used in preparing the emulsion is not particularly limited, and may be a homogenizer, high-pressure disperser, ultrasonic disperser, etc., which have a strong shearing force. Also, a homomixer, such as "Disper" (trade name, manufactured by Primix Corporation), "Clearmix" (trade name, manufactured by M Technique Co., Ltd.), or "Cavitron" (trade name, manufactured by Pacific Machinery Works, Ltd.) may be used.

[0028] Median diameter D of the emulsion droplets in the emulsion of step 1 50is preferably 0.1 μm or more, more preferably 0.2 μm or more, and even more preferably 0.3 μm or more, from the viewpoint of reducing the specific surface area relative to the environment outside the silica capsule and improving long-term storage stability, and 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, from the viewpoint of the physical strength of the silica capsule. Median diameter of emulsion droplets D 50 can be measured by the method described in the Examples.

[0029] The initial pH of the sol-gel reaction in step 1 is preferably 3.0 or higher, more preferably 3.3 or higher, and even more preferably 3.5 or higher, from the viewpoint of maintaining a balance between the hydrolysis reaction and condensation reaction of the tetraalkoxysilane, and from the viewpoint of suppressing the formation of a highly hydrophilic sol and promoting the progress of encapsulation. The initial pH is preferably 4.5 or lower, more preferably 4.3 or lower, and even more preferably 4.1 or lower, from the viewpoint of suppressing the simultaneous formation of a silica shell and the aggregation of emulsified droplets and obtaining silica capsules with a dense shell.

[0030] 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 to adjust the initial pH to a desired level. The pH of the emulsion may fall below 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).

[0031] 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 of cation exchange resins added to water or ethanol, among which hydrochloric acid, sulfuric acid, nitric acid, and citric acid are preferred. Examples of alkaline pH adjusters include sodium hydroxide, sodium bicarbonate, potassium hydroxide, ammonium hydroxide, diethanolamine, triethanolamine, and trishydroxymethylaminomethane, with sodium hydroxide and ammonium hydroxide being preferred.

[0032] The reaction temperature of the sol-gel reaction in step 1 can be any value that 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, and even more preferably 40°C or lower.

[0033] [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, thereby forming silica capsules having a second shell that encapsulates the first shell.

[0034] 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 formation of silica sol that disperses in the aqueous phase and improving the dispersion stability of the silica capsules.

[0035] 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 divided amounts, or may be added continuously. However, from the viewpoint of forming a highly dense second shell, it is preferable to add it dropwise continuously. When the tetraalkoxysilane is added dropwise continuously, the dropwise addition time can be set appropriately depending on the scale of production, but from the viewpoint of suppressing separation of the added tetraalkoxysilane from the aqueous dispersion, it is preferably 5 minutes or more, more preferably 10 minutes or more, even more preferably 30 minutes or more, and preferably 1200 minutes or less, more preferably 1000 minutes or less, even more preferably 500 minutes or less.

[0036] 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 keeping the total amount of tetraalkoxysilane added within the above range, the encapsulated fragrance compound can be maintained for a long period of time.

[0037] 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 the tetraalkoxysilane in step 2 is 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, from the viewpoint of improving the long-term retention of the fragrance compound, and is preferably 2% by mass or more, more preferably 3% by mass or more, and even more preferably 5% by mass or more, from the viewpoint of production efficiency. 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 the tetraalkoxysilane in step 2 may be performed by carrying out step 1 so 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.

[0038] In the present invention, from the viewpoint of production efficiency, the aqueous dispersion obtained in step 1 may be diluted with water before the addition of the 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.

[0039] The reaction temperature for the sol-gel reaction in step 2 can be selected arbitrarily 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 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 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. The sol-gel reaction in step 1 and the sol-gel reaction in step 2 may be carried out at different reaction temperatures.

[0040] 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. Examples of the organic polymer compound include nonionic polymers, cationic polymers, and anionic polymers. The nonionic polymer refers to a water-soluble polymer that has no charge in water. By using a nonionic polymer, it is possible to impart a function to the silica capsule depending on 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 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.

[0041] Examples of nonionic polymers include polymers having structural units derived from nonionic monomers, 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" refers to either acrylate or methacrylate. Similarly, "(meth)acrylic" refers to either acrylic or methacrylic.

[0042] Examples of cationic polymers include polymers containing quaternary ammonium salt groups, polymers having nitrogen-based cationic groups, polymers that can become cationic by adjusting the pH, etc. By using a cationic polymer, it is possible to alleviate the situation in which the silica capsules (1) obtained in step 1 tend to aggregate in the aqueous dispersion, and it is possible to suppress the generation of coarse particles, etc. 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), as well as 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, with one or more selected from poly(diallyldimethylammonium chloride), poly(acrylic acid-co-diallyldimethylammonium chloride), and poly(acrylamide-co-acrylic acid-co-diallyldimethylammonium chloride) being more preferred, and poly(diallyldimethylammonium chloride) being even more preferred.

[0043] 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 preferably 10 meq / g or less, more preferably 8 meq / g or less, from the viewpoints of dispersibility of the silica capsules (1), suppression of the generation of coarse particles, and improvement of long-term retention. The cationic polymer may contain anionic groups, 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.

[0044] Examples of anionic polymers 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 anionic polymers include poly(meth)(acrylic acid), poly(maleic 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. Note that (meth)acrylic acid means acrylic acid or methacrylic acid.

[0045] 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 amount of the aqueous dispersion obtained in step 1.

[0046] The silica capsules obtained in step 2 are dispersed in water. Depending on the application, they can be used as they are, but in some cases, the silica capsules are separated and used. Separation methods such as filtration and centrifugation can be used.

[0047] <Core> The core of the silica capsule according to the present invention contains a fragrance compound. In the present invention, from the viewpoint of fragrance release when the fabric is wetted 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 or more and 8.00 or less is 25 mass% or more of the total amount of fragrance compounds.

[0048] In the present invention, the logP value is a coefficient indicating the affinity of an organic compound for water and 1-octanol. The 1-octanol / water partition coefficient P is the ratio of the equilibrium concentrations of a compound in a solvent consisting of two liquid phases, 1-octanol and water, when a trace amount of the compound dissolves as a solute in each solvent and reaches partition equilibrium. It is generally expressed in the form of their logarithm logP to the base 10. Nowadays, the value of "calculated logP (sometimes referred to as ClogP)" is widely used, 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. In the present invention, the ClogP value is also used when selecting compounds.

[0049] In the present invention, the ClogP value is calculated using software EPI Suite (registered trademark: The Estimations Programs Interface for Windows version 4.11) jointly developed by the US Environmental Protection Agency and Syracuse.

[0050] In the present invention, the vapor pressure at 25°C is determined by an actual measurement or by estimating the vapor pressure from the boiling point, or, if the chemical is solid at room temperature, by estimating the vapor pressure from the melting point. Vapor pressure can be estimated by several known methods (such as the Antoine method, the Modified Grain method, and the Mackay method). In the present invention, the vapor pressure is calculated using MPBPWIN, which is included in the EPI suite available from the U.S. Environmental Protection Agency (EPA). If the average of the values calculated by the Antoine method and the Grain method is displayed in the calculation results as the "Selected VP," the average value is used. If no "Selected VP" is displayed, the value calculated by the Modified Grain method is used.

[0051] Examples 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 or more and 8.00 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 (flute), 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, dimethylbenzylcarbinyl butyrate, tricyclodecenyl propionate, amyl salicylate, γ-methyl ionone, α-damascenoic acid β-damascone, nerolin yarayara, 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 Nylacetonitrile, γ-decalactone, α-methyl-3,4-methylenedioxyhydrocinnamic aldehyde, 7-methyl-3,5-dihydro-2H-benzodioxepinone, tricyclodecenyl acetate (tricyclodecenyl acetate), tricyclodecenyl propionate, allyl 2-pentyloxyglycolate, 1-(2-tert-butylcyclohexyloxy)-2-butanol, citronellyloxyacetaldehyde, indole, 4-methyl-3-decen-5-ol, paprika Lamenthan-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, pt-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, methylphenyl These include ethyl glycidate, 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 methylanthranilate, and dodecanenitrile-3-dodecenal.

[0052] Furthermore, fragrance compounds with a logP value of less than 2.0 can also be used as the fragrance compound of component (a). Examples of fragrance compounds with a logP 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 logP values.

[0053] Furthermore, fragrance compounds with a logP value of greater than 5.0 can also be used as the fragrance compound of component (a). Examples of fragrance compounds with a logP value greater 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), acetylcedrene (5.2), nerolidol (5.7), benzyl alcohol (7.1), and caryophyllene (6.3). The numbers in parentheses are logP values.

[0054] Furthermore, as the fragrance compound of component (a), a fragrance compound with a vapor pressure of less than 0.01 Pa can also be used. Examples of fragrance compounds with 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 vapor pressure.

[0055] The fragrance compound of component (a) may also be a fragrance compound with a vapor pressure of greater than 8.00 Pa. Examples of fragrance compounds with a vapor pressure of greater 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), triplal (46.9), and styrallyl acetate (14.9). The numbers in parentheses are vapor pressures.

[0056] The microcapsules of component (a) may contain one or more diluents, solvents, and solidifying agents in addition to the fragrance compound. Examples of diluents and solvents include ethylene glycol, propylene glycol, dipropylene glycol, and glycerin, as well as fatty acid alcohols, lower alcohol esters of fatty acids, and glycerin esters of fatty acids.

[0057] [Silica capsule] The silica capsules of the present invention, for example, the silica capsules produced as described above, are attached to a textile product in an aqueous medium and then break down towards the end of the process as water evaporates from the textile product, allowing the encapsulated material to penetrate into the textile product.

[0058] The silica capsule of the present invention is preferably a silica capsule having a core containing the fragrance compound, a first shell encapsulating the core, and a second shell encapsulating the first shell. The first shell of the silica capsule of the present invention encapsulates the core, contains silica as a constituent component, and preferably has an average thickness of 5 nm or more and 20 nm or less, and the second shell encapsulates the first shell, contains silica as a constituent component, and preferably has an average thickness of 10 nm or more and 100 nm or less. The average thickness of the first and second shells of the silica capsules can be measured by observation with a transmission electron microscope (TEM). Specifically, the thickness of the first and second shells is measured on a photograph under a transmission electron microscope. This operation is performed with the field of view changed five times. The distribution of the average thickness of the first and second shells is determined from the obtained data. The magnification of the transmission electron microscope is generally between 10,000 and 100,000 times, but is adjusted appropriately depending on the size of the silica capsules. Here, a transmission electron microscope (TEM) such as the "JEM-2100" (manufactured by JEOL Ltd.) can be used.

[0059] The median diameter D of the silica capsule according to the present invention 50 From the viewpoint of improving the long-term storage property and improving the dispersion stability of the silica capsules, the particle size is preferably 0.1 μm or more, more preferably 0.5 μm or more, and even more preferably 1 μm or more, and from the viewpoint of improving the physical strength and long-term storage property of the silica capsules, the particle size is preferably 100 μm or less, more preferably 50 μm or less, even more preferably 30 μm or less, and even more preferably 10 μm or less. Silica capsule median diameter D 50 can be measured by the method described in the Examples.

[0060] The silica capsules according to the present invention are preferably blended as a silica capsule slurry when preparing a textile product treatment composition. From the viewpoint of improving the dispersibility of the silica capsule slurry in the components mixed when preparing the textile product treatment composition, a surfactant selected from a cationic surfactant, a nonionic surfactant, and an anionic surfactant may be added to the silica capsule slurry.

[0061] The silica capsules of component (a) may be partially aggregated to the extent that the fragrance is not impaired.

[0062] The textile product treatment composition of the present invention contains component (a) in an amount of preferably 0.05% by mass or more, more preferably 0.07% by mass or more, even more preferably 0.1% by mass or more, and preferably 1.0% by mass or less, more preferably 0.7% by mass or less, even more preferably 0.5% by mass or less, as a fragrance compound contained in component (a).

[0063] <(b) Component> The component (b) of the present invention is a quaternary ammonium salt compound represented by the following general formula (1), in which, when the acyl group is considered to be a fatty acid, the proportion of oleic acid, linoleic acid, and linolenic acid is 60% by mass or more and 100% by mass or less of the total fatty acids constituting the acyl group.

[0064] [ka]

[0065] [In the formula, R 1 , R 2 , R 3 are each independently a residue (called an acyl group) obtained by removing OH from a fatty acid having 16 to 22 carbon atoms, or a hydrogen atom, and R 4 is an alkyl group having 1 to 3 carbon atoms, and X - is an anion.

[0066] The textile product treatment composition of the present invention provides a good fragrance release when treated fibers are rewetted after prolonged drying, and the fragrance persists well even after drying. The reason for this is not entirely clear, but it is presumed to be due to the properties of component (b), a highly liquid quaternary ammonium compound derived from unsaturated fatty acids. Because component (b) has a structure derived from unsaturated fatty acids, it is highly liquid, which improves the penetration of the fragrance derived from component (a) into the fibers. Additionally, it is presumed that appropriate control of the capsule disintegration during drying also improves the fragrance persistence after drying.

[0067] The component (b) of the present invention is a quaternary ammonium salt compound in which, of the total fatty acids constituting the acyl groups, one or more selected from oleic acid, linoleic acid, and linolenic acid account for 60% by mass or more, preferably 70% by mass or more, more preferably 75% by mass or more, even more preferably 80% by mass or more, still more preferably 90% by mass or more, and 100% by mass or less, preferably 98% by mass or less, more preferably 95% by mass or less. Component (b) is a quaternary ammonium salt compound that satisfies the fatty acid ratio requirement and in which the ratio of oleic acid to all fatty acids constituting the acyl groups is preferably 50% by mass or more, more preferably 60% by mass or more, even more preferably 65% by mass or more, even more preferably 70% by mass or more, still more preferably 75% by mass or more, and preferably 100% by mass or less, more preferably 95% by mass or less, even more preferably 90% by mass or less.

[0068] Examples of fatty acids that make up the acyl group of component (b) include stearic acid, palmitic acid, and elaidic acid in addition to oleic acid, linoleic acid, and linolenic acid.

[0069] Component (b) is a quaternized triethanolamine fatty acid ester, and is therefore composed of three different quaternary compounds with acylation degrees of 1, 2, and 3. From the viewpoints of storage stability and lingering fragrance duration of the composition, the average acylation ratio of component (b) is preferably 1.3 or more, more preferably 1.5 or more, and preferably 2.0 or less, more preferably 1.95 or less. The average acylation degree can be adjusted by the reaction ratio of fatty acid to triethanolamine and the reaction ratio with alkylating agent during quaternization, as well as the reaction conditions.

[0070] In the present invention, the following ratios are preferred for the components constituting component (b). A compound having an acylation degree of 1, i.e., R 1 is an acyl group, and R 2 and R 3 is a hydrogen atom [hereinafter referred to as component (b1)], the proportion of which is 5% by mass or more, preferably 10% by mass or more, more preferably 15% by mass or more, and preferably 45% by mass or less, more preferably 40% by mass or less, and even more preferably 35% by mass or less, of the total amount of the quaternary ammonium salt represented by general formula (1). A compound having an acylation degree of 2, i.e., R 1 and R 2 is an acyl group, and R 3 is a hydrogen atom [hereinafter referred to as component (b2)], 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 75% by mass or less, more preferably 70% by mass or less, even more preferably 65% by mass or less, of the total amount of the quaternary ammonium salt represented by general formula (1). A compound having an acylation degree of 3, i.e., R 1 , R 2 and R 3 is an acyl group [hereinafter referred to as component (b3)], the proportion of which is preferably 5% by mass or more, more preferably 8% by mass or more, even more preferably 10% by mass or more, and preferably 40% by mass or less, more preferably 30% by mass or less, even more preferably 25% by mass or less, of the total amount of the quaternary ammonium salt represented by general formula (1).

[0071] Although components (b2) and (b3) are effective in softening and adsorbing microcapsules containing fragrance compounds to textile products, they also affect the storage stability of the textile product treatment composition. Therefore, it is preferable that component (b) has a composition that leaves a moderate amount of component (b1). Furthermore, while satisfying the above-mentioned ratios, the content of component (b2) in component (b) is greater than that of component (b3). More preferably, the difference between the content (% by mass) of component (b2) and the content (% by mass) of component (b3) is preferably 15% by mass or more, more preferably 20% by mass or more, and even more preferably 25% by mass or more.

[0072] In general formula (1), R 4 is preferably a methyl group or an ethyl group. In general formula (1), X - is preferably an anion selected from a halogen ion such as a chlorine ion, an alkyl sulfate ion having from 1 to 3 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 alkyl sulfate ion having from 1 to 3 carbon atoms, and more preferably a methyl sulfate ion or an ethyl sulfate ion.

[0073] The component (b) used in the present invention can be obtained by a method of dehydrating esterification of fatty acids having a specified ratio of oleic acid, linoleic acid, and linolenic acid with triethanolamine (referred to as the dehydration esterification method), or by a method of transesterification of fatty acid lower alkyl esters (wherein the lower alkyl is methyl, ethyl, or propyl) with triethanolamine (referred to as the transesterification method), followed by quaternization of the resulting esterification product with an alkylating agent. To obtain a mixture satisfying the ratios of components (b1) to (b3) of the component (b) of the present invention, for example, the mixture can be obtained by quaternization of a mixture of triethanolamine fatty acid esters reacted at a molar ratio of fatty acid or fatty acid lower alkyl ester to triethanolamine of preferably 1.3:1 or more, more preferably 1.5:1 or more, and preferably 2.0:1 or less, more preferably 1.95:1 or less.

[0074] When a selective hydrogenation reaction is carried out to obtain component (b), a mixture of geometric isomers of unsaturated bonds is formed. In the component (b) of the present invention, the cis / trans (molar ratio) is preferably 25 / 75 or more, more preferably 50 / 50 or more, and preferably 100 / 0 or less, more preferably 95 / 5 or less.

[0075] In the dehydration esterification method, the esterification reaction temperature is preferably 140°C to 230°C, and the reaction is carried out while removing condensed water. To promote the reaction, a conventional esterification catalyst may be used, such as an inorganic acid such as sulfuric acid or phosphoric acid, an inorganic oxide such as tin oxide or zinc oxide, or an alcoholate such as titanium tetrapropoxide. The progress of the reaction is monitored by measuring the acid value (AV) and saponification value (SV) according to the method described in JIS K0070-1992. The esterification reaction is terminated when the AV reaches 10 mgKOH / g or less, preferably 6 mgKOH / g or less. The SV of the resulting mixture of ester compounds is preferably 110 mgKOH / g or more, more preferably 130 mgKOH / g or more, and preferably 210 mgKOH / g or less, more preferably 190 mgKOH / g or less.

[0076] In the transesterification method, the reaction is preferably carried out at a temperature of 50°C or higher, more preferably 100°C or higher, and preferably 150°C or lower, while removing the resulting lower alcohol. To accelerate the reaction, inorganic alkalis such as sodium hydroxide and potassium hydroxide, or alkoxy catalysts such as methylate and ethylate, can also be used. The progress of the reaction is preferably monitored by directly quantifying the amount of fatty acid lower alkyl ester using gas chromatography or the like. It is preferable to terminate the reaction when the amount of unreacted fatty acid lower alkyl ester is 10 area% or less, particularly 6 area% or less, based on the amount of the charged fatty acid lower alkyl ester on the gas chromatography chart. The resulting mixture of ester compounds preferably has an SV of 110 mgKOH / g or higher, more preferably 130 mgKOH / g or higher, and preferably 210 mgKOH / g or less, more preferably 190 mgKOH / g or less.

[0077] The ester compound thus obtained is then quaternized. Suitable alkylating agents for quaternization include methyl chloride, dimethyl sulfate, and diethyl sulfate. When using methyl chloride as the alkylating agent, no particular solvent is required. However, when using a solvent, a solution containing 10% to 50% by mass of a solvent such as ethanol or isopropanol relative to the ester compound is charged into a pressure reactor such as a titanium autoclave, and the methyl chloride is introduced under pressure at a temperature of 30°C to 120°C under a sealed condition to carry out the reaction. Since some of the methyl chloride may decompose and generate hydrochloric acid during this reaction, adding a small amount of an alkaline agent is preferred to promote the reaction more efficiently. The molar ratio of methyl chloride to the ester compound is preferably 1 to 1.5 equivalents of methyl chloride per equivalent of amino groups in the ester compound.

[0078] The molar reaction ratio of dimethyl sulfate and / or diethyl sulfate to the ester compound is preferably 0.9 equivalents or more, more preferably 0.95 equivalents or more, and preferably 1.1 equivalents or less, more preferably 0.99 equivalents or less, of dimethyl sulfate and / or diethyl sulfate relative to 1 equivalent of the amino group of the ester compound.

[0079] The textile treatment composition of the present invention may contain other reaction products generated during the production of component (b). For example, specific examples of unquaternized amines include amines of a fatty acid triester structure and amines of a fatty acid diester structure. Depending on the production method, a reaction product containing a total of amines of a fatty acid triester structure and amines of a fatty acid diester structure in an amount of 5 to 30 parts by mass per 100 parts by mass of component (b) can be obtained. On the other hand, since amines of a fatty acid monoester structure are easily quaternized, their content in the reaction product is typically 0.5 parts by mass or less per 100 parts by mass of component (b). Furthermore, the total content of triethanolamine and quaternized triethanolamine that has not been converted into a fatty acid ester is 0.5 to 3 parts by mass per 100 parts by mass of component (b), of which 90% by mass or more is the quaternized product. Unreacted fatty acids may also be present. When a reaction product containing component (b) is used, such unreacted components and side reaction components may be present in the textile treatment composition as long as they do not impair the effects of the present invention.

[0080] When a mixture containing components (b1), (b2), and (b3) is used as component (b), the proportions of components (b1), (b2), (b3), and amine compounds in the mixture can be determined using a high-performance liquid chromatograph (also called HPLC) and a charged aerosol detector (also called CAD). For a measurement method using CAD, please refer to "Technology and Applications of the Corona CAD Charged Aerosol Detector" (Fukushima et al., Chromatography, Vol. 32, No. 3 (2011)).

[0081] The textile product treatment composition of the present invention contains component (b) in an amount of preferably 0.5% by mass or more, more preferably 1.0% by mass or more, even more preferably 1.5% by mass or more, and preferably 20% by mass or less, more preferably 15% by mass or less, even more preferably 10% by mass or less.

[0082] In the textile product treatment composition of the present invention, the mass ratio of component (b) to component (a) [component (b) / component (a)] is preferably 1 / 1000 or more, more preferably 1 / 500 or more, and is preferably 1 / 1 or less, more preferably 1 / 2 or less.

[0083] <Components that may be contained in the textile product treatment composition of the present invention> The textile product treatment composition of the present invention may further contain the following components.

[0084] <(c) component> When the textile product treatment composition of the present invention is used as a softener composition, it is preferable to use a cationic surfactant other than component (b) as component (c). Component (c) is preferably a quaternary ammonium compound represented by the general formula (1) above, and is preferably a quaternary ammonium salt compound obtained in the same manner as above, except for the fatty acid composition constituting the acyl group. Specifically, it is preferably a quaternary ammonium salt compound represented by the following general formula (2), in which, when the acyl group is considered as a fatty acid, the proportion of unsaturated fatty acids is 50% by mass or less, and more preferably 40% by mass or less, of the total fatty acids constituting the acyl group. The lower limit of the proportion of unsaturated fatty acids in the quaternary ammonium salt compound may be 10% by mass or more of the total fatty acids constituting the acyl group.

[0085] [ka]

[0086] [In the formula, R 5 , R 6 , R 7 are each independently a residue (called an acyl group) obtained by removing OH from a fatty acid having 16 to 22 carbon atoms, or a hydrogen atom, and R 8 is an alkyl group having 1 to 3 carbon atoms, and X - is an anion.

[0087] R 5 , R 6 , R 7The fatty acids constituting the acyl groups are preferably those obtained by saponifying oils selected from beef tallow, palm oil, sunflower oil, soybean oil, rapeseed oil, safflower oil, cottonseed oil, corn oil, and olive oil, with fatty acid compositions obtained from beef tallow, palm oil, and sunflower oil being particularly preferred from the standpoint of flexibility. Furthermore, because these contain a large amount of alkenyl groups with two or more carbon-carbon unsaturated bonds, they can be produced by, for example, crystallization as described in JP-A-4-306296, vacuum distillation of methyl esters as described in JP-A-6-41578, or a method of controlling the proportion of fatty acids with two or more carbon-carbon unsaturated bonds by selective hydrogenation as described in JP-A-8-99036. For example, hardened beef tallow is obtained by saturating fatty acids derived from beef tallow by hydrogenation, and is sometimes referred to as semi-hardened, since only a portion of the fat is hardened.

[0088] Other examples of component (c) include tertiary amine compounds and their acid salts, in which one or two of the groups bonded to the nitrogen atom are alkyl or alkenyl groups having from 10 to 22 carbon atoms, and the remaining groups are alkyl groups having from 1 to 4 carbon atoms, which may have a hydroxyl group, benzyl groups, or preferably methyl groups, as well as quaternized products of the above tertiary amine compounds. Among these, cationic surfactants having one alkyl or alkenyl group having from 10 to 22 carbon atoms and one benzyl group are preferred from the viewpoint of imparting a bactericidal effect to the textile product treatment composition. The alkylating agents used to quaternize the compounds can be the compounds described for component (b).

[0089] Other components (c) include one or more cationic surfactants selected from the following (I) to (IV). (I) Di-long chain alkyl or alkenyl dimethyl ammonium salts having alkyl or alkenyl groups with 10 to 22 carbon atoms (II) Mono-long chain alkyl or alkenyl trimethylammonium salts having an alkyl or alkenyl group with 10 to 22 carbon atoms (III) Mono-long-chain alkyldimethylbenzyl ammonium salts having an alkyl or alkenyl group with 10 to 22 carbon atoms (IV) Acid salts of amine compounds represented by the following general formula (3):

[0090] [ka]

[0091] [In the formula, R 1b is an alkyl group having 13 to 19 carbon atoms or an alkenyl group having 13 to 19 carbon atoms, and R 2b is an alkylene group having 1 to 6 carbon atoms, and R 3b , R 4b are each independently an alkyl group having 1 to 3 carbon atoms.

[0092] The acid of the acid salt of the amine compound represented by the general formula (3) can be an inorganic acid or an organic acid. Examples of inorganic acids include hydrochloric acid and sulfuric acid. Examples of organic acids include alkyl sulfuric acids having 1 to 3 carbon atoms, mono- or polycarboxylic acids having 1 to 10 carbon atoms, and mono- or polysulfonic acids having 1 to 20 carbon atoms. Specific examples of organic acids include methyl sulfuric acid, ethyl sulfuric acid, p-toluenesulfonic acid, (o-, m-, p-)xylenesulfonic acid, benzenesulfonic acid, dodecylbenzenesulfonic acid, glycolic acid, citric acid, benzoic acid, and salicylic acid.

[0093] Specific examples of the one or more cationic surfactants selected from (I) to (IV) include didecyldimethylammonium chloride salt, lauryltrimethylammonium chloride salt, myristyltrimethylammonium chloride salt, lauryldimethylbenzylammonium chloride salt, dimethylaminopropylstearylamide salt, and dimethylaminopropylpalmitylamide salt.

[0094] When the textile product treatment composition of the present invention contains component (c), the content thereof is preferably 0.5% by mass or more, more preferably 1.0% by mass or more, even more preferably 2% by mass or more, and from the viewpoint of storage stability, preferably 20% by mass or less, more preferably 18% by mass or less, even more preferably 16% by mass or less, and still more preferably 14% by mass or less. In the textile product treatment composition of the present invention, the total content of components (b) and (c) is preferably 25% by mass or less, more preferably 20% by mass or less, and even more preferably 18% by mass or less.

[0095] When the liquid textile product treatment composition of the present invention uses a combination of component (b) and component (c), the mass ratio (b) / (c) of the content of component (b) to the content of component (c) is preferably 0.05 or more, more preferably 0.06 or more, even more preferably 0.1 or more, still more preferably 0.3 or more, still more preferably 0.5 or more, and is preferably 20 or less, more preferably 15 or less, even more preferably 10 or less, and still more preferably 5 or less.

[0096] <(d) component> The textile treatment composition of the present invention may contain, as component (d), a fragrance compound other than the fragrance compound encapsulated in component (a). In the present invention, even if the fragrance compound is the same as the fragrance compound encapsulated in the microcapsules of component (a), the fragrance compound that is not encapsulated in the microcapsules of component (a) is treated as component (d). In other words, the fragrance compound of component (d) is a fragrance compound dispersed in the textile treatment composition, and these fragrance compounds are sometimes referred to as external fragrances.

[0097] There are no particular restrictions on the fragrance compound that can be used as component (d), and the same fragrance compound as that used in component (a) may be used. Component (d) can be blended into the textile product treatment composition of the present invention as a fragrance composition containing multiple fragrance compounds. Fragrance compounds that can be used as component (d) include, for example, fragrances described in "Fundamentals of Fragrances and Fragrance Blending, edited by Nakajima Mototaka, published by Sangyo Tosho Co., Ltd., 4th printing, April 20, 2005" and fragrance compounds known to be incorporated into fabric softeners and the like through patent documents, as well as fragrance components prepared independently by fragrance manufacturers or blended fragrance compositions themselves. Examples of component (d) include β-ionone (4.4), γ-undecalactone (3.1), γ-nonalactone (2.1), γ-methylionone (4.8), ambroxan (4.8), Iso E Super (5.2), ethyl vanillin (1.6), ethylene brassylate (4.7), eugenol (2.7), cashmeran (manufactured by IFF) (4.5), coumarin (1.5), geraniol (3.5), o,t-butylcyclohexyl acetate (4.4), citronellyl acetate (4.6), dimethylbenzylcarbinyl acetate (3.4), sandalmysole core (4.7), dihydrojasmine (4.8), and methylparaben (4.8). Examples of methyl sucralose (3.5), dihydromyrcenol (3.5), dimethyltetrahydrobenzaldehyde (2.9), Javanol (Givaudan) (4.7), Neroline Yara Yara (3.3), Habanolide (Firmenich) (4.9), Flute (Kao Corporation) (3.6), Paeonil (Givaudan) (4.3), hexyl cinnamic aldehyde (4.8), heliotropin (1.8), methyl β-naphthyl ketone (2.9), methyl anthranilate (2.3), raspberry ketone (1.5), limonene (4.8), and lilial (4.4). The values in parentheses are logP values.

[0098] The textile treatment composition of the present invention may contain a diluent or a fixative for the fragrance compound, such as dipropylene glycol, palmitic acid isopropyl ester, diethyl phthalate, benzyl benzoate, liquid paraffin, isoparaffin, and oils and fats. When a diluent and a fixative are used, the amount of the diluent and the fixative relative to the total amount of component (e), the diluent and the fixative is preferably 0% by mass or more and 20% by mass or less. Note that these diluents and fixatives can also be used for the fragrance compound encapsulated in the microcapsules of component (a).

[0099] The use of component (d) in combination with component (a) allows for greater flexibility in fragrance design than ever before. Therefore, when a textile product is treated with the textile product treatment composition of the present invention in combination with component (d), it is possible to impart, for example, a fresh and rich fragrance.

[0100] When the textile product treatment composition of the present invention contains component (d), its content in the composition is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, and even more preferably 0.5% by mass or more, and from the viewpoint of the storage stability of the textile product treatment composition (hereinafter also referred to as storage stability) and the balance of scent with other fragrance components, it is preferably 2.5% by mass or less, more preferably 2.0% by mass or less, and even more preferably 1.8% by mass or less. The content of component (d) in the textile product treatment composition can be adjusted depending on the product.

[0101] Furthermore, when the textile product treatment composition of the present invention contains component (d), the total content of components (a) and (d) is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, and even more preferably 0.5% by mass or more, from the viewpoint of sufficient fragrance of the textile product, and is preferably 2.8% by mass or less, more preferably 2.5% by mass or less, and even more preferably 2.0% by mass or less, from the viewpoint of storage stability and a balance of fragrance with other fragrance components.

[0102] <(e) component> The textile product treatment composition of the present invention may contain, as component (e), one or more nonionic surfactants selected from polyoxyalkylene alkyl ethers having an alkyl group with from 8 to 24 carbon atoms and polyoxyalkylene alkenyl ethers having an alkenyl group with from 8 to 24 carbon atoms.

[0103] The component (e) is preferably at least one selected from nonionic surfactants represented by the following general formula (4).

[0104] R 1e -A-〔(R 2e O) p -R 3e 〕 q (4) [In the formula, R 1e is an alkyl or alkenyl group having 8 or more, preferably 10 or more, and 24 or less, preferably 18 or less, more preferably 16 or less carbon atoms; R 2e is an alkylene group having 2 or 3 carbon atoms, preferably an ethylene group, and R 3e is an alkyl group having 1 to 3 carbon atoms or a hydrogen atom, p is a number of 2 or more, preferably 5 or more, more preferably 10 or more, and 100 or less, more preferably 80 or less, and even more preferably 60 or less, and the addition form may be either random addition or block addition. A is -O-, -COO-, -CONH-, -NH-, -CON< or -N<, and when A is -O-, -COO-, -CONH- or -NH-, q is 1, and when A is -CON< or -N<, q is 2.

[0105] Specific examples of the compound of general formula (4) include compounds represented by the following formulae (4-1) to (4-4).

[0106] R 1e -O-(C2H4O) r -H (4-1) [In the formula, R 1e has the same meaning as above, and r is a number of 8 or more, preferably 10 or more, and 100 or less, preferably 60 or less. R 1e -O-(C2H4O) s / (C3H6O) t -H (4-2) [In the formula, R 1ehas the same meaning as above. s and t are each independently a number of 2 or more, preferably 5 or more and 40 or less, and (C2H4O) and (C3H6O) may be a random or block adduct. R 1e -O-(C2H4O) x1 -(C3H6O) y -(C2H4O) x2 -H (4-3) [In the formula, R 1e has the same meaning as above. x1, y, and x2 are the average number of moles added, x1 is 1 or more and 13 or less, y is 1 or more and 4 or less, and x2 is 1 or more and 13 or less, and (C2H4O), (C3H6O), and (C2H4O) are block adducts.]

[0107] [ka]

[0108] [In the formula, R 1e has the same meaning as above. B is -N< or -CON<, u and v are each independently a number of 0 to 40, and u+v is a number of 5 to 60, preferably 40 or less. R 4e , R 5e are each independently a hydrogen atom or an alkyl group having 1 to 3 carbon atoms.

[0109] When the textile product treatment composition of the present invention contains component (e), its content in the composition is preferably 1.0 mass% or more, more preferably 1.5 mass% or more, even more preferably 2.0 mass% or more, and preferably 5.0 mass% or less, more preferably 4.5 mass% or less, even more preferably 4.0 mass% or less.

[0110] <Component (f)> 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 preferred. When the textile product treatment composition of the present invention contains component (f), the content of the component (f) in the composition is preferably 0.005% by mass or more, more preferably 0.01% by mass or more, and even more preferably 0.02% by mass or more, from the viewpoint of improving the dispersibility of the textile product treatment composition, and is preferably 1.0% by mass or less, more preferably 0.5% by mass or less, and even more preferably 0.3% by mass or less, from the viewpoint of improving the storage stability of the textile product treatment composition.

[0111] <(g) component> The textile product treatment composition of the present invention may contain an ester of a polyhydric alcohol and a fatty acid as component (g) from the viewpoint of improving storage stability. The ester of a polyhydric alcohol and a fatty acid is preferably an ester compound of a polyhydric alcohol having 3 to 6 carbon atoms and 3 to 6 hydric, and a fatty acid having 12 to 22 carbon atoms. More specifically, it is an ester compound of a polyhydric alcohol having preferably 3 or more, more preferably 4 or more, and preferably 6 or less carbon atoms, and preferably having a valence of 3 or more, more preferably 4 or more, and preferably 6 or less, and a fatty acid having preferably 12 or more, more preferably 14 or more, even more preferably 16 or more, and preferably 22 or less, more preferably 20 or less carbon atoms. The polyhydric alcohol constituting component (g) is preferably at least one selected from glycerin, trimethylolethane, trimethylolpropane, 1,3,5-pentatriol, erythritol, arabitol, pentaerythritol, sorbitan, sorbitol, xylitol, and mannitol, and more preferably at least one selected from pentaerythritol and sorbitan. The fatty acids constituting component (g) are preferably one or more selected from saturated fatty acids such as lauric acid, myristic acid, stearic acid, and palmitic acid; unsaturated fatty acids such as oleic acid, elaidic acid, linoleic acid, and linolenic acid; fatty acids derived from vegetable oils such as palm oil fatty acid and hydrogenated palm oil fatty acid; and fatty acids derived from animal oils such as beef tallow fatty acid and hydrogenated beef tallow fatty acid; more preferably one or more selected from saturated fatty acids, fatty acids derived from vegetable oils, and fatty acids derived from animal oils; and even more preferably one or more selected from stearic acid, hydrogenated palm oil fatty acid, and hydrogenated beef tallow fatty acid. The component (g) in the present invention is preferably at least one selected from ester compounds of pentaerythritol and fatty acids having 16 to 22 carbon atoms (hereinafter also referred to as "pentaerythritol fatty acid esters"), and ester compounds of sorbitan and fatty acids having 16 to 22 carbon atoms (hereinafter also referred to as "sorbitan fatty acid esters").

[0112] When the textile product treatment composition of the present invention contains component (g), the content of component (g) in the composition is preferably 0.1 mass% or more, more preferably 0.3 mass% or more, even more preferably 0.5 mass% or more, still more preferably 0.7 mass% or more, and preferably 5.0 mass% or less, more preferably 4 mass% or less, even more preferably 3 mass% or less.

[0113] <(h) component> The textile product treatment composition of the present invention may contain an amphoteric surfactant as component (h). The amphoteric surfactant is not particularly limited as long as it can generally be incorporated into liquid fabric softener compositions, etc. Examples include alkyl (having 12 to 22 carbon atoms) amidopropyl carbobetaine, alkyl (having 12 to 22 carbon atoms) amidopropyl sulfobetaine, alkyl (having 12 to 22 carbon atoms) carbobetaine, alkyl (having 12 to 22 carbon atoms) sulfobetaine, and alkyl (having 10 to 18 carbon atoms) dimethylamine oxide.

[0114] When the textile product treatment composition of the present invention contains component (h), the content of component (h) in the composition is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, and still more preferably 0.5% by mass or more, from the viewpoint of reducing the viscosity of the textile product treatment composition and improving its bactericidal properties, and is preferably 4.0% by mass or less, more preferably 3.5% by mass or less, and even more preferably 2.5% by mass or less, from the viewpoint of preventing a decrease in storage stability and softening effect.

[0115] <Component (i)> The textile treatment composition of the present invention may contain a water-insoluble silicone compound as component (i). In this specification, the term "water-insoluble" for component (i) means that the amount of silicone compound that dissolves in 1 L of ion-exchanged water at 20°C is 1 g or less. Specific examples of component (i) include silicone compounds such as dimethylpolysiloxane, quaternary ammonium-modified dimethylpolysiloxane, amino-modified dimethylpolysiloxane, amide-modified dimethylpolysiloxane, epoxy-modified dimethylpolysiloxane, carboxy-modified dimethylpolysiloxane, polyoxyalkylene-modified dimethylpolysiloxane, and fluorine-modified dimethylpolysiloxane.

[0116] Component (i) is preferably one or more selected from dimethylpolysiloxane, amino-modified dimethylpolysiloxane, amide-modified dimethylpolysiloxane, and polyoxyalkylene (polyoxyethylene and / or polyoxypropylene, preferably polyoxyethylene)-modified dimethylpolysiloxane. Component (i) preferably has a weight-average molecular weight of 1,000 or more, more preferably 3,000 or more, and even more preferably 5,000 or more, and preferably 1,000,000 or less. Component (i) preferably has a viscosity at 25°C of 2 mm or less. 2 / s or more, preferably 500 mm 2 / s or more, more preferably 1,000 mm 2 / s or more, and preferably 1 million mm 2The weight average molecular weight of component (i) is a value measured by gel permeation chromatography using polystyrene as a standard substance.

[0117] The amino equivalent of the amino-modified dimethylpolysiloxane (amino equivalent is the molecular weight per nitrogen atom) is preferably 1,500 g / mol or more, more preferably 2,500 g / mol or more, even more preferably 3,000 g / mol or more, and preferably 40,000 g / mol or less, more preferably 20,000 g / mol or less, even more preferably 10,000 g / mol or less.

[0118] When the textile product treatment composition of the present invention contains component (i), the content of component (i) in the composition is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, from the viewpoint of imparting a refreshing feeling to the finished textile product, and is preferably 5% by mass or less, from the viewpoint of dispersibility. Furthermore, when the textile product treatment composition of the present invention contains component (i), the content of component (i) in the composition is, from the viewpoint of suppressing foaming, preferably 0.001% by mass or more, more preferably 0.005% by mass or more, even more preferably 0.01% by mass or more, and is preferably 1.0% by mass or less, more preferably 0.5% by mass or less, even more preferably 0.1% by mass or less.

[0119] <(j) component> The textile product treatment composition of the present invention may contain an acidifying agent from the viewpoint of adjusting the pH of the textile product treatment composition. Examples of the acid agent include inorganic acids and organic acids, and specific examples of inorganic acids include hydrochloric acid and sulfuric acid. Specific examples of organic acids include mono- or polycarboxylic acids having from 1 to 10 carbon atoms, mono- or polysulfonic acids having from 1 to 20 carbon atoms, and alkylsulfuric acids having from 1 to 3 carbon atoms. More specific examples include methylsulfuric acid, ethylsulfuric acid, p-toluenesulfonic acid, (o-, m-, p-)xylenesulfonic acid, benzenesulfonic acid, dodecylbenzenesulfonic acid, glycolic acid, ethylenediaminetetraacetic acid, citric acid, benzoic acid, and salicylic acid. Among these, an acidic agent selected from hydrochloric acid and a mono- or polycarboxylic acid having 1 to 10 carbon atoms is preferred, and an acidic agent selected from hydrochloric acid and citric acid is more preferred. When the textile product treatment composition of the present invention contains an acidic agent, the content thereof can be appropriately adjusted, and is preferably an amount that brings the pH into the range described below and does not impair storage stability.

[0120] <(k) component> The textile product treatment composition of the present invention may contain a fatty acid having 12 to 22 carbon atoms in order to improve the softening effect. The fatty acid of component (k) may be contained as an unreacted product during the synthesis of components (b) and (c), or as a decomposition product of components (b) and (c). As component (k), saturated or unsaturated fatty acids having 12 to 22 carbon atoms are preferred, and specific examples thereof include fatty acids selected from lauric acid, myristic acid, palmitic acid, palmitoleic acid, stearic acid, oleic acid, linoleic acid, erucic acid, and behenic acid, and fatty acids selected from palmitic acid, stearic acid, oleic acid, and linoleic acid are more preferred.

[0121] When the textile product treatment composition of the present invention contains component (k), the content of component (k) in the composition is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, and preferably 0.3% by mass or less, more preferably 0.2% by mass or less, even more preferably 0.1% by mass or less.

[0122] <(l) component> The textile product treatment composition of the present invention may contain a water-soluble organic solvent as component (1) from the viewpoint of storage stability and viscosity. Examples of the water-soluble organic solvent include those commonly used in textile treatment compositions. Note that the "water-soluble organic solvent" in component (l) refers to an organic solvent that dissolves 20 g or more in 100 g of deionized water at 20°C. Specific examples of the water-soluble organic solvent include propylene glycol, ethylene glycol, glycerin, diethylene glycol, monoethylene glycol monophenyl ether, diethylene glycol monophenyl ether, triethylene glycol monophenyl ether, isopropanol, ethanol, etc. Among these, water-soluble organic solvents selected from ethylene glycol, ethanol, and propylene glycol are preferred.

[0123] When the textile product treatment composition of the present invention is sufficiently stabilized by other components and has a low viscosity, it does not need to contain the water-soluble organic solvent, which is component (l). When the textile product treatment composition of the present invention contains component (l), the content of component (l) in the composition is preferably 15% by mass or less, more preferably 10% by mass or less, even more preferably 5% by mass or less, and preferably 0.3% by mass or more, more preferably 0.5% by mass or more, even more preferably 1.0% by mass or more.

[0124] <(m) component> The textile product treatment composition of the present invention preferably contains a chelating agent as component (m) from the viewpoint of suppressing changes in hue, fading of dyes, and deterioration of fragrance during long-term storage of the textile product treatment composition. Note that component (m) in the present invention may also function as the acidifying agent.

[0125] Specific examples of chelating agents 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 salts thereof. As the salt, alkali metal salts and ammonium salts are preferred, and sodium salts and potassium salts are more preferred.

[0126] When the textile product treatment composition of the present invention contains component (m), the content of component (m) in the composition is preferably 0.001% by mass or more, more preferably 0.005% 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, still more preferably 0.5% by mass or less, and still more preferably 0.1% by mass or less.

[0127] <(n) component> The textile treatment composition of the present invention may contain, as component (n), microcapsules other than component (a) that encapsulate a fragrance compound, or a fragrance precursor. The use of component (n) in combination with components (a) and (d) allows for greater freedom in fragrance design than ever before. For component (n), a silicate ester compound described in JP 2014-125685 A or an ester compound of an alcohol-based fragrance compound described in JP 8-502522 A with an aliphatic monocarboxylic acid or aliphatic dicarboxylic acid can be used as a sustained-release fragrance.

[0128] When the textile product treatment composition of the present invention contains component (n), the content of component (n) in the composition is preferably 0.15% by mass or more, more preferably 0.3% by mass or more, even more preferably 0.45% by mass or more, and preferably 0.65% by mass or less, more preferably 0.6% by mass or less, even more preferably 0.55% by mass or less.

[0129] When the textile product treatment composition of the present invention contains component (n), the total content of components (a), (d) and (n) in the composition is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, and even more preferably 0.5% by mass or more, from the viewpoint of adequately scenting textile products, and is preferably 3.0% by mass or less, more preferably 2.5% by mass or less, and even more preferably 2.0% by mass or less, from the viewpoint of a balance between storage stability and the preference for fragrance strength.

[0130] The mass % of component (n) is calculated based on the mass of the fragrance compound encapsulated in the microcapsules of component (n) and the fragrance compound that constitutes the fragrance precursor of component (n).

[0131] <(o) component> In the textile product treatment composition of the present invention, an antioxidant such as butylhydroxytoluene (BHT) can be used to inhibit deterioration of the substrate. Furthermore, dyes and pigments commonly used in textile product treatment compositions can be used to enhance aesthetics and prevent discoloration during long-term storage. Furthermore, antibacterial and antifungal agents commercially available under the trade name Proxel can also be used. Benzoic acid and its salts can also be used as antibacterial and antifungal agents.

[0132] <Other ingredients> The textile product treatment composition of the present invention preferably contains water. It is preferably a liquid composition containing water. Water is usually the remainder of the composition and is used so that the total of the components is 100% by mass. The textile product treatment composition of the present invention preferably contains 60% by mass or more, more preferably 65% by mass or more, and preferably 95% by mass or less, more preferably 90% by mass or less of water.

[0133] The textile treatment composition of the present invention preferably has a pH at 20°C of 6 or less, more preferably 4 or less, and preferably 2 or more.

[0134] The textile product treatment composition of the present invention is suitable for use on textile products, such as clothing, fabrics, bedding, and towels. The textile treatment composition of the present invention can be used for softening textile products. For example, the textile treatment composition of the present invention may be a textile softener composition, or even a liquid textile softener composition.

[0135] <Method of processing textile products> The present invention provides a method for treating textile products, which comprises contacting a treatment liquid obtained by mixing component (a), component (b), and water with the textile product. The components (a) and (b) used in the textile product treatment method of the present invention can be the components (a) and (b) described in the textile product treatment composition of the present invention. Preferred aspects of the components (a) and (b) are also the same as those in the textile product treatment composition of the present invention. The matters described in relation to the textile product treatment composition of the present invention can be applied as appropriate to the textile treatment method of the present invention.

[0136] In the method for treating textile products of the present invention, the treatment liquid is preferably obtained by mixing the textile product treatment composition of the present invention with water. [Example]

[0137] As the organic compound to be encapsulated in the microcapsules, model fragrance A having the composition shown in Table 1 was used.

[0138] [Table 1]

[0139] <Component (a)> (a-1): Silica capsule (I) obtained in Synthesis Example 1 below

[0140] <Synthesis Example 1> Synthesis of (a-1) (Process 1) An aqueous phase component was obtained by diluting 1.49 g of Coatamine 60W (trade name, manufactured by Kao Corporation, cetyltrimethylammonium chloride, active ingredient 30% by mass) with 88.52 g of ion-exchanged water. To this aqueous phase component was added an oil phase component prepared by mixing 24.13 g of model fragrance A in the formulation shown in Table 1 above with 6.01 g of tetraethoxysilane (hereinafter also referred to as "TEOS"). The mixture was emulsified using a homomixer (manufactured by HsiangTai, model: HM-310, the same applies hereinafter) 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 0.01 g. 50 was 1.09 μm. The pH of the resulting emulsion was adjusted to 3.7 using 0.2N hydrochloric acid, and then transferred to a separable flask equipped with a stirring blade and a condenser. The liquid was stirred for 24 hours while maintaining the liquid temperature at 30°C, yielding an aqueous dispersion containing silica capsules (1-1) having a core made of model fragrance A and a first shell made of silica.

[0141] (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. After continuing stirring for 24 hours, the mixture was cooled to form a second shell encapsulating the first shell, thereby obtaining an aqueous dispersion containing silica capsules (I) in which model fragrance A was encapsulated by amorphous silica. The median diameter D of the silica capsules (I) was 50 The median diameter D of the emulsion droplets and silica capsules (I) was 2.23 μm. 50 was measured using a laser diffraction / scattering particle size distribution analyzer "LA-960" (trade name, manufactured by Horiba, Ltd.). A flow cell was used for the measurement, and the medium was set to water and the refractive index was set to 1.40-0i. An emulsion or an aqueous dispersion containing silica capsules was added to the flow cell, and measurements were carried out at a concentration where the transmittance was around 90%, and the median diameter D 50 asked for. The thickness of the first shell was approximately 5 nm, and the thickness of the second shell was 5 to 30 nm.

[0142] <(b) Component> (b-1): A quaternary ammonium salt compound prepared in Synthesis Example 2 below. <Synthesis Example 2> Synthesis of b-1 Triethanolamine and a fatty acid represented by RCOOH were subjected to an esterification reaction at a reaction molar ratio (fatty acid / triethanolamine) of 1.87 / 1 to obtain an esterification reaction product. The esterification reaction product contained 1% by mass of unreacted fatty acid (the composition of which is described below). After a quaternization reaction was carried out with dimethyl sulfate so that the methyl group was 0.96 equivalents relative to the amine of the amine compound in the esterification reaction product, ethanol was added.

[0143] The reaction product obtained was analyzed by HPLC for the composition ratio of each component, and quantified using tetraoctylammonium bromide as an internal standard. As a result, the reaction product obtained contained 66 mass % of component (b-1), which is component (b), 15 mass % of ethanol, 17 mass % of unreacted amine salt (as methyl sulfate), 1 mass % of unreacted fatty acid, a trace amount of triethanolamine quaternary salt, and other trace components, among which, in general formula (1), R 1 is an acyl group, and R 2 and R 3 is a hydrogen atom, and R 4 is a methyl group, and X - is methyl sulfate [hereinafter, may be referred to as (b1-1)] in the component (b-1), and 1 and R 2 is an acyl group, and R 3 is a hydrogen atom, and R 4 is a methyl group, and X - is methyl sulfate [hereinafter, may be referred to as (b1-2)] in 58% by mass of component (b-1), and in general formula (1), R 1 , R 2 and R 3 is an acyl group, and R 4 is a methyl group, and X - The compound (b-1) in which methyl sulfate was used [hereinafter, may be referred to as (b1-3)] accounted for 20 mass % of the component (b-1). The quaternization rate was 80 mass %.

[0144] The composition of RCOOH used in the reaction for producing (b-1) is shown below. Oleic acid: 80% by mass Linoleic acid: 10% by mass Linolenic acid: 2% by mass Stearic acid: 2% by mass Palmitic acid: 6% by mass The above composition was determined by analyzing the fatty acids used as raw materials by gas chromatography, and the area percentage of each fatty acid was considered to be mass percentage. The values in the recipe are converted to the concentration of component (b-1).

[0145] <(c) component> (c-1): A quaternary ammonium salt compound prepared in Synthesis Example 3 below. <Synthesis Example 3> Synthesis of c-1 A quaternary ammonium salt compound represented by general formula (2) was prepared as component (c), which had a different fatty acid composition constituting the acyl group from that of component (b). Specifically, a fatty acid represented by RCOOH was esterified with triethanolamine at a molar ratio (fatty acid / triethanolamine) of 1.65 / 1 to obtain an esterification reaction product. The esterification reaction product contained 5% by mass of unreacted fatty acid (the composition is described below). A quaternization reaction was carried out with dimethyl sulfate so that the methyl group was 0.96 equivalents relative to the amine of the amine compound in the esterification reaction product, and then ethanol was added. In this manner, a reaction product containing a quaternary ammonium salt compound (hereinafter referred to as (c-1)) of the quaternary ammonium salt compound represented by general formula (2), which is component (c), and which has a different fatty acid composition of the acyl group from component (b) was prepared. The reaction product obtained was analyzed by HPLC for the composition ratio of each component, and quantified using tetraoctylammonium bromide as an internal standard. As a result, the reaction product obtained contained 75% by mass of component (c-1), which is a compound represented by general formula (2) and has a different fatty acid composition of the acyl group from component (b), 10% by mass of ethanol, 12% by mass of unreacted amine (as methyl sulfate), 2% by mass of unreacted fatty acid, a trace amount of triethanolamine quaternary salt, and other trace components. 5 is an acyl group, and R 6 and R 7 is a hydrogen atom, and R 8 is a methyl group, and X - is methyl sulfate [hereinafter, may be referred to as (c1-1)] in the component (c-1), and 5 and R 6 is an acyl group, and R 7 is a hydrogen atom, and R 8 is a methyl group, and X - is methyl sulfate [hereinafter, may be referred to as (c1-2)] in the component (c-1), and in the general formula (2), R 5 , R 6 and R 7 is an acyl group, and R 8 is a methyl group, and X - The compound (c-1) in which methyl sulfate was used [hereinafter, may be referred to as (c1-3)] accounted for 16 mass % of the component (c-1). The quaternization rate was 80 mass %.

[0146] The composition of RCOOH used in the reaction for producing (c-1) is shown below. Palmitic acid: 45% by mass Stearic acid: 25% by mass Oleic acid: 27% by mass Linoleic acid: 3% by mass The above composition was determined by analyzing the fatty acids used as raw materials by gas chromatography, and the area percentage of each fatty acid was considered to be mass percentage. The numerical values in the recipe were converted into the concentration of component (c-1).

[0147] <(d) component> (d-1): Fragrance composition described in Table 2

[0148] [Table 2]

[0149] <(e) component> (e-1): A compound in which an average of 30 moles of ethylene oxide is added to lauryl alcohol That is, in general formula (4-1), R 1e is a linear alkyl group having 12 carbon atoms and bonded to an oxygen atom. 1e is a primary carbon atom and r is 30.

[0150] <Component (f)> (f-1): Calcium chloride

[0151] <Component (i)> (i-1): Aqueous emulsion of dimethylpolysiloxane produced in Synthesis Example 4 below. <Synthesis Example 4> Synthesis of i-1 5 g of polyoxyethylene lauryl ether having an average addition mole number of 5 moles was dissolved in dimethylpolysiloxane (viscosity at 25°C: 500,000 mm 2 The mixture was added to 300 g of dimethylpolysiloxane (300 g of sodium polyoxyethylene lauryl ether sulfate) under high shear force (1 / s) and stirred for another 10 minutes. Subsequently, 30 g of ion-exchanged water was added, followed by 2 g of sodium polyoxyethylene lauryl ether sulfate (average number of added moles: 2 mol) and 15 g of polyoxyethylene myristyl ether (average number of added moles: 40 mol). Stirring was continued for another 30 minutes under high shear force. 248 g of water was then added and stirred to obtain an aqueous emulsion of dimethylpolysiloxane [(i-1)]. The volume-average particle size of the emulsified particles in (i-1) was 500 nm. The dimethylpolysiloxane content in (i-1) was 50% by mass. The volume-average particle size was measured by dispersing the aqueous emulsion in ethanol using an electrophoretic light scattering photometer (Otsuka Electronics Co., Ltd., Model ELS-8000) at 20°C.

[0152] <(l) component> (l-1): Propylene glycol (l-2): Ethylene glycol

[0153] <(m) component> (m-1): Sodium methylglycine diacetate

[0154] <(o) component> (o-1): Proxel BDN (manufactured by Arch Chemical Japan)

[0155] <pH adjuster> To adjust the pH of the fiber product treatment agent composition, sodium hydroxide or citric acid, which is the (j) component, or hydrochloric acid was used as appropriate as needed.

[0156] <Examples and Comparative Examples> [Preparation of Fiber Product Treatment Agent Composition] A fiber product treatment agent composition was prepared by mixing each component so as to obtain the blending composition shown in Table 3. Specifically, it is as follows. The mass % of the composition in the table is the mass % of the active ingredient (the (a) component is the mass % as a fragrance compound). In a 300 mL beaker, an amount of ion-exchanged water corresponding to 85 mass % of the amount required for the fiber product treatment agent composition to reach 200 g, the (e) component, the (i) component, the (l) component, the (m) component, the (o) component, and the pH adjuster were placed, and the temperature of the ion-exchanged water was adjusted to 60 ± 2 °C using a water bath. A mixed solution was obtained by stirring as needed using a stirring blade so that the components added to the aqueous layer were uniformly dissolved in the ion-exchanged water. The stirring blade used was a stirring blade arranged such that the long side was in the 90-degree direction with respect to the rotation center axis of a stirring rod with a diameter of 5 mm, with 3 blades, a long side / short side of the blade = 3 cm / 1.5 cm, and the blades installed at an angle of 45 degrees with respect to the rotation surface.

[0157] The mixture, whose temperature had been adjusted to 60±2°C, was stirred (300 rpm) with the stirring blade. Component (b) and, optionally, component (c), which had been heated and dissolved at 65°C, were added to the mixture over a period of 3 minutes, and after the addition was completed, the mixture was stirred for 15 minutes. Next, the mixture was cooled to 30±2°C using a 5°C water bath. Component (a), component (d), and component (f) were added sequentially and stirred for 5 minutes. Ion-exchanged water was then added to the mixture to a final mass of 200 g, and the mixture was stirred for 5 minutes to obtain a textile product treatment composition. The visible light transmittance of the obtained textile product treatment compositions was measured. Specifically, a glass cell with an optical path length of 10 mm was used as the measurement cell, and ion-exchanged water was placed in the control cell, and measurements were made using an ultraviolet-visible spectrophotometer (Shimadzu UV-2500PC). The visible light transmittance (wavelength 660 nm) of the textile product treatment compositions obtained in the examples and comparative examples was all less than 10%, and they were emulsion-type textile product treatment compositions.

[0158] [Fragrance evaluation] Seventeen pairs of underwear (Gunze men's round-neck short-sleeved shirts, size L) were washed five times in a Hitachi NW-6CY fully automatic washing machine using a commercially available weak alkaline detergent (Kao Attack), and then dried indoors to remove excess detergent. The washing conditions for each cycle were: detergent concentration 0.0667% by mass, tap water 47 L, water temperature 20°C, wash time 10 minutes, rinse cycle 2 times, and spin cycle 6 minutes.

[0159] 0.867 g (10 g / 1.5 kg of underwear) of the textile product treatment composition stored under the above conditions was added to 4 L of tap water in a Panasonic electric bucket N-BK2-A, and one piece of underwear washed in the above manner was added and stirred for 5 minutes. The underwear treated with the textile product treatment composition was then dehydrated for 3 minutes in the spin tub of a Hitachi twin-tub washing machine, hung on a hanger in a room at 20°C and 40% RH to dry for 24 hours, and then stored in a room at 20°C and 60% RH for 1 day.

[0160] A 20cm x 20cm piece of fabric was cut from the prepared underwear and used for scent evaluation. After drying, the scent of the fabric was evaluated according to the following criteria. The results are shown in the table as "scent when dry." <Evaluation criteria> 3: A rich and fresh scent. 2: Has a rich and slightly fresh scent. 1: Has almost no rich, fresh scent.

[0161] The cloth was then sprayed with water to 10-20% owf and folded in four. After leaving it to stand for a few seconds, the cloth was opened and the scent at the intersection of the folds was smelled. The difference in scent intensity between the dry and wet states was evaluated according to the following criteria, and this was taken as the effectiveness of the moisture fragrance. The results are shown in the table as "difference in scent intensity." <Evaluation criteria> 3: There is a large difference in fragrance intensity. 2: The difference in fragrance intensity is small. 1: No difference in fragrance intensity is detected.

[0162] Each evaluation was carried out by five panelists who are experts in evaluating fragrances, and the average of the scores of the five panelists was used as the evaluation result.

[0163] [Table 3]

Claims

1. A textile product treatment composition comprising the following components (a) and (b), and water: Component (a): A microcapsule having a shell containing silica as a constituent component and a core containing a fragrance compound inside the shell, wherein 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% by mass or more of the total amount of fragrance compounds. Component (b): A quaternary ammonium salt compound represented by the following general formula (1), in which, when the acyl group is considered to be a fatty acid, the proportion of one or more acids selected from oleic acid, linoleic acid, and linolenic acid is 60% by mass or more and 100% by mass or less of all fatty acids constituting the acyl group. 【Chemical 1】 [In the formula, R １ , R ２ , R ３ are each independently a residue obtained by removing OH from a fatty acid having 16 to 22 carbon atoms (called an acyl group), or a hydrogen atom; R ４ is an alkyl group having 1 to 3 carbon atoms, and X － is an anion.

2. 2. The textile product treatment composition according to claim 1, wherein the proportion of oleic acid constituting the acyl group of component (b) is 50% by mass or more of all fatty acids constituting the acyl group.

3. 3. The textile product treatment composition according to claim 1, wherein the fatty acids constituting the acyl groups of component (b) are selected from palmitic acid and stearic acid in addition to one or more fatty acids selected from oleic acid, linoleic acid, and linolenic acid.

4. The textile product treatment composition according to any one of claims 1 to 3, wherein the shell of component (a) contains silica as a constituent component formed by a sol-gel reaction of an alkoxysilane.

5. The textile product treatment composition according to any one of claims 1 to 4, wherein component (a) is a microcapsule having a first shell encapsulating the core and a second shell encapsulating the first shell.

6. The textile treatment composition according to claim 5, wherein the first shell has an average thickness of 20 nm or less.

7. The textile treatment composition according to claim 5 or 6, wherein the second shell has an average thickness of 100 nm or less.

8. The textile product treatment composition according to any one of claims 1 to 7, further comprising, as component (c), a cationic surfactant other than component (b).

9. 9. The textile product treatment composition according to claim 8, wherein component (c) is a quaternary ammonium salt compound represented by the following general formula (2), in which, when the acyl groups are considered to be fatty acids, the proportion of unsaturated fatty acids is 50 mass% or less of all fatty acids constituting the acyl groups: 【Chemistry 2】 [In the formula, R ５ , R ６ , R ７ are each independently a residue obtained by removing OH from a fatty acid having 16 to 22 carbon atoms (called an acyl group), or a hydrogen atom; R ８ is an alkyl group having 1 to 3 carbon atoms, and X － is an anion.

10. The textile product treatment composition according to claim 8 or 9, comprising 0.5% by mass or more and 20% by mass or less of component (c).

11. The textile product treatment composition according to any one of claims 1 to 10, further comprising a fragrance other than the component (a) as the component (d).

12. A textile product treatment composition described in any one of claims 1 to 11, wherein the content of component (a) in the textile product treatment composition is 0.05 mass% or more and 1.0 mass% or less as a fragrance compound contained in component (a), and the content of component (b) is 1.0 mass% or more and 15 mass% or less.

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