How to wash textile products

Abstract

To provide a washing method of textile products stacked in a washing tank using a washing machine, capable of giving different flavors among the textile products after washing the textile products once, and a kit for washing textile products.SOLUTION: A washing method of textile products includes a step of feeding, into a washing tank in which textile products are stacked using a washing machine, one or more of each of pouch A enclosing a detergent composition A containing a perfume composition (a1) containing a perfume compound (hereinafter referred to as component (a1)) and pouch B enclosing a detergent composition B containing a perfume composition (a2) including a perfume compound different from the component (a1) (hereinafter referred to as component (a2)), such that the pouch A and the pouch B are located in different stacking directions of textile products.SELECTED DRAWING: None

Description

[Technical Field]

[0001] This invention relates to a method for washing textile products and a kit for washing textile products. [Background technology]

[0002] When washing textile products using detergent compositions for textile products, consumers desire not only good cleaning performance but also a strong lingering fragrance on the washed textile products. However, if consumers continue to smell the same fragrance composition attached to the textile products, their sensitivity decreases significantly due to habituation, making it difficult to maintain a high level of lingering fragrance that satisfies consumers.

[0003] Patent Document 1 describes a unit-dose article comprising a water-soluble film for enclosing a fluid composition, wherein the fluid composition comprises a. a diamide gelling agent and b. 11% to 70% by weight of water. Patent Document 2 describes a fragrance containing a fragrance raw material selected from the group consisting of a raw material containing 0.001 ppm to 10% of a thiol portion, a raw material containing 0.001 ppm to 10% of a sulfide portion, a raw material containing 0.01 ppm to 10% of a thiazole portion, a raw material containing 0.0005 ppm to 5% of a pyrazine portion, a raw material containing 0.1 ppm to 20% of a nitrile portion, a raw material containing 0.01 ppm to 10% of an indole portion, a raw material containing 0.001 ppm to 10% of an oxatian portion, a raw material containing 0.1 ppm to 10% of an oxime portion, a raw material containing 0.1 ppm to 20% of an amine portion, a raw material containing 0.0005 ppm to 5% of an isothiocyanate, a raw material containing 0.0005 ppm to 5% of a diamine portion, and a raw material containing 0.01 ppm to 10% of oxygen, sulfur, and nitrogen. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2014-529675 [Patent Document 2] Japanese Patent Publication No. 2019-23299 [Overview of the project] [Problems that the invention aims to solve]

[0005] The present invention provides a method for washing textile products, and a textile product washing kit, that allows users to perceive different scents among textile products after washing them in a single wash cycle when the textile products are stacked in a washing machine tub. [Means for solving the problem]

[0006] The present invention relates to a method for washing textile products using a washing machine, in which one or more packets each from packets A and B are placed in a washing tub where textile products are stacked, such that packets A and B are in different positions in the direction of stacking the textile products, and then the products are washed. Small bag A: A small bag containing a fragrance composition (hereinafter referred to as (a1) component) containing a fragrance compound, which contains detergent composition A. Small bag B: A small bag containing a fragrance composition (hereinafter referred to as component (a2)) that contains a fragrance compound different from component (a1), and containing detergent composition B.

[0007] The present invention also relates to a kit for washing textile products, comprising one or more of the aforementioned pouches A and B. [Effects of the Invention]

[0008] According to the present invention, when washing textile products stacked in a washing machine tub, a method for washing textile products and a textile product washing kit are provided that allows users to perceive different scents among the textile products after washing, even with a single washing cycle. The present invention provides a method for washing textile products and a textile product washing kit that allows consumers to perceive different scents between textile products after a single washing. This prevents consumers from becoming accustomed to the same fragrance composition attached to the textile products, thus maintaining a high level of lingering fragrance that satisfies consumers. [Modes for carrying out the invention]

[0009] [[Washing method of textile products]] The reason why the washing method of the textile products of the present invention can feel different scents between the washed textile products in one-time washing of the textile products is not necessarily clear, but it is presumed as follows. When using a washing machine, in a washing tub with stacked textile products, a detergent composition A containing a perfume composition containing a perfume compound (a1) (hereinafter referred to as component (a1)) and a detergent composition B containing a perfume composition containing a perfume compound different from component (a1) (hereinafter referred to as component (a2)) are put in such a way that the detergent composition A and the detergent composition B are at different positions in the stacking direction of the textile products and washed, in the washing liquid, since the perfume compositions of component (a1) and component (a2) are mixed and then adsorbed onto the textile products, different scents cannot be felt between the washed textile products. On the other hand, in the washing method of the textile products of the present invention, a sachet A containing the detergent composition A containing component (a1) and a sachet B containing the detergent composition B containing component (a2) are separately divided, and the sachet A and the sachet B are put into the washing tub so as to be at different positions in the stacking direction of the textile products and washed. In that case, the put sachets A and B collapse due to the inter-fabric shear force of the textile products, and the contained detergent compositions are released, but it is presumed that different scents can be felt between the washed textile products because the perfume compositions of component (a1) and component (a2) are locally adsorbed onto the textile products respectively before being mixed in the washing liquid.

[0010] The washing method of the textile products of the present invention uses a washing machine, and in a washing tub with stacked textile products, one or more are taken from each of the sachet A and the sachet B and put in such a way that the sachet A and the sachet B are at two or more different positions in the stacking direction of the textile products and washed.

[0011] As methods for putting pouch A and pouch B into the washing tub, there are methods of putting them respectively at any two or more different positions, such as the lower part (between the washing tub and the stacked textile products), the upper part (above the stacked textile products), and between the stacked textile products of the textile products stacked in the washing tub. One or more of each of pouch A and pouch B are put so as to be at different positions among the lower part, the upper part, and between the stacked textile products of the textile products where pouch A and pouch B are stacked. As the order of putting, after stacking textile products in the washing tub in advance, there are methods of putting each of pouches A and B so as to be at different positions among the lower part, the upper part, and between the stacked textile products of the textile products where pouch A and pouch B are stacked, or methods of alternately putting each of pouches A and B and the textile products into the washing tub and putting each of pouches A and B so as to be at different positions among the lower part, the upper part, and between the stacked textile products of the textile products where pouch A and pouch B are stacked.

[0012] The method of putting water into the washing tub is not particularly limited and may be before, after, or at the same time as putting each of pouches A and B and the textile products into the washing tub. From the viewpoint of further enhancing the effects of the present invention, it is preferable to put water after putting each of pouches A and B and the textile products into the washing tub.

[0013] Also, as another method for putting pouch A and pouch B, in the washing tub in which textile products are stacked, each of pouch A or B and water are alternately put to change the water level in the washing tub and put each of pouch A or B between the stacked textile products located on the water surface or at the upper part (only when the upper part is located on the water surface), so that pouch A and pouch B are put at different positions in the stacking direction of the textile products.

[0014] From the viewpoint of the uniformity of the arrangement in the washing tub, each of pouches A and B is preferably put at positions separated from each other by 10 cm or more, more preferably 15 cm or more, still more preferably 20 cm or more, and preferably 40 cm or less, more preferably 30 cm or less, still more preferably 25 cm or less in the stacking direction of the textile products in the washing tub.

[0015] From the viewpoint of uniformity of placement within the washing tub, each of the small bags A and B should be placed in the washing tub at two or more, preferably three or more, more preferably four or more, and preferably five or fewer different positions in the direction in which the textile products are stacked, with each bag being in a different position.

[0016] Each of the small bags A and B can be placed in two or more different locations on the textile products, regardless of their horizontal position (perpendicular to the stacking direction of the textile products), as long as they are on the textile products. Each small bag A or B may be placed in two or more different locations horizontally, at the same position in the stacking direction of the textile products. However, each small bag A and B must be placed in two or more different locations in the stacking direction of the textile products, and each small bag A and B must not be placed in the same position in the stacking direction of the textile products. When each small bag A or B is placed in two or more different locations horizontally, from the viewpoint of uniformity of placement in the washing tub, each small bag A or B should be placed in the washing tub at a distance of preferably 10 cm or more, more preferably 15 cm or more, even more preferably 20 cm or more, and preferably 40 cm or less, more preferably 30 cm or less, and even more preferably 25 cm or less from each other horizontally. From the viewpoint of uniformity of placement within the washing tub, each of the small bags A and B should be placed in the washing tub at a distance of preferably 10 cm or more, more preferably 15 cm or more, even more preferably 20 cm or more, and preferably 40 cm or less, more preferably 30 cm or less, and even more preferably 25 cm or less from each other in a straight line (regardless of the stacking direction or horizontal direction of the textile products).

[0017] A rotary washing machine is preferred as the washing machine used in the textile product washing method of the present invention. A rotary washing machine is a washing machine that performs a washing method in which textile products, which are not fixed to a rotating device, rotate around a rotating shaft together with the washing solution. Rotary washing machines include top-loading washing machines (pulsator type washing machines or agitator type washing machines) and drum-type washing machines. In the method for washing textile products according to the present invention, it is preferable to use a top-loading washing machine in order to enjoy the effects of the present invention.

[0018] The detergent composition A contained in pouch A (hereinafter referred to as "detergent composition A of the present invention") and the detergent composition B contained in pouch B (hereinafter referred to as "detergent composition B of the present invention") used in the method for washing textile products of the present invention are, independently, a solid detergent composition or a liquid detergent composition, and from the viewpoint of cleaning power, a solid detergent composition is preferred.

[0019] The pouches A and B, which contain the detergent compositions A and B of the present invention, are preferably made of a water-soluble film. In this invention, a water-soluble film is defined as a film in which no insoluble material is visible after adding 500g of ion-exchanged water at 30°C to a 1-liter glass beaker, placing an 8cm diameter Teflon® stirring bar inside, adding 1g of the film to be evaluated, and stirring at 100rpm for 30 minutes.

[0020] Water-soluble films are preferably composed of polymers. Water-soluble films can be obtained by methods known in the art, such as casting, blow molding, extrusion, and injection molding of polymers. Non-limiting examples of polymers for producing water-soluble films include polyvinyl alcohol (PVA), vinyl alcohol copolymers, polyvinylpyrrolidone, polyalkylene oxides, (modified) cellulose, (modified) cellulose ethers or esters or amides, polycarboxylic acids such as polyacrylates and maleic acid / acrylic acid salt copolymers, polyamino acids i.e., peptides, polyamides such as polyacrylamide, polysaccharides such as starch and gelatin, and natural rubbers such as xanthan gum and carragum. Vinyl alcohol copolymers are copolymers of vinyl alcohol with other monomers, such as ethylene and acrylic acid. Preferably, the water-soluble film contains a polymer selected from the group consisting of polyacrylates and water-soluble acrylates, methylcellulose, sodium carboxymethylcellulose, dextrin, ethylcellulose, hydroxyethylcellulose, maltodextrin, polymethacrylate, polyvinyl alcohol, vinyl alcohol copolymer, hydroxypropyl methylcellulose (HPMC), and combinations thereof. More preferably, the water-soluble film contains a polymer selected from polyvinyl alcohol, vinyl alcohol copolymer, and hydroxypropyl methylcellulose. Even more preferably, the water-soluble film contains polyvinyl alcohol, for example, Solvron, available from Aicello Corporation. Suitable polymers for producing water-soluble films for pouches are described, for example, in U.S. Patent No. 6,995,126.

[0021] In the pouches A and B containing the detergent compositions A and B of the present invention, respectively, the total surface area of ​​the water-soluble film in contact with the detergent composition A or B of the present invention is preferably 2 cm², from the viewpoint of further enhancing product stability. 2 More than 5cm 2 More preferably 7 cm 2 More preferably 15 cm 2From the above, and from the same viewpoint, preferably 100 cm 2 More preferably 70cm 2 Further preferably 60 cm 2 More preferably, 45 cm 2 The following applies:

[0022] The pouches A and B, each containing the detergent compositions A and B of the present invention, can be manufactured by any suitable process known in the art, such as a known detergent pouch manufacturing process. Examples of pouch manufacturing processes are described in U.S. Patents 6,995,126, 7,127,874, 8,156,713, 7,386,971, 7,439,215, and U.S. Patent Application Publication 2009 / 199877.

[0023] The small pouches A and B, each containing the detergent compositions A and B of the present invention, respectively, each independently contain an amount of contents of preferably 10g or more, more preferably 12g or more, even more preferably 15g or more, preferably 50g or less, more preferably 30g or less, and even more preferably 25g or less. The preferred shape and size of each pouch is, for example, a quadrilateral shape, with a side length preferably between 1cm and 5cm, and a thickness preferably between 1cm and 5cm, more preferably 1cm and 4cm. The mass of each pouch is preferably 5g or more, more preferably 10g or more, even more preferably 15g or more, preferably 50g or less, more preferably 40g or less, and even more preferably 30g or less. Another preferred shape and size per piece is, for example, a rectangular prism, with a vertical length preferably between 5 cm and 20 cm, a horizontal length preferably between 1 cm and 4 cm, and a thickness preferably between 1 cm and 5 cm, more preferably between 1 cm and 4 cm. The mass per piece is preferably 5 g or more, more preferably 10 g or more, even more preferably 15 g or more, and preferably 50 g or less, more preferably 40 g or less, and even more preferably 30 g or less.

[0024] The detergent composition A of the present invention contains a fragrance composition comprising a fragrance compound as component (a1). (a1) The fragrance composition of component (a1) is usually a composition containing multiple fragrance compounds.

[0025] The fragrance compounds used in this invention are organic compounds known to be used as fragrances, and the fragrance components described in "Practical Knowledge of Fragrances and Perfumery" (by Motoki Nakajima, Sangyo Tosho Co., Ltd., published June 21, 1995) can be appropriately combined according to the desired fragrance and application. Furthermore, fragrance components and fragrance compositions described in patent documents for softeners, starches, styling agents, or other finishing agents, which are known as finishing agents, can be used after consideration, including their proportions, as long as they do not impair the effects of this invention.

[0026] (a1) The fragrance composition of component (a1) preferably contains a fragrance compound (hereinafter referred to as fragrance compound (a11)) having a logP value of 1.0 or more and 8.0 or less, from the viewpoint of adsorption to clothing and stability. Furthermore, the fragrance compound (a11) has a logP value of 1.0 or higher, preferably 2.0 or higher, more preferably 2.5 or higher, and 8.0 or lower, preferably 5.0 or lower, more preferably 4.0 or lower, from the viewpoint of adsorption to clothing and stability.

[0027] In this invention, the logP value is a coefficient that indicates 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 the compound in each solvent when a trace amount of the compound dissolves as a solute in a solvent consisting of two liquid phases, 1-octanol and water, and reaches partition equilibrium. It is generally expressed in the form of its logarithm logP with respect to base 10. Today, the value of "calculated logP (sometimes called ClogP)", which is calculated by a calculation program that uses the fragment value of the atomic group determined by the number of atoms constituting the compound molecule and the type of chemical bond, is widely used, and in this invention as well, the value of ClogP is used when selecting compounds. In this invention, the ClogP value is calculated using the EPI Suite (registered trademark; The Estimations Programs Interface for Windows version 4.11), software jointly developed by the U.S. Environmental Protection Agency and Syracuse.

[0028] The fragrance compounds (a11) include phenylethyl alcohol (1.6), ethyl vanillin (1.6), amyl cinnamic aldehyde (4.3), 2-methyl undecanal (4.7), ethyl-3-methyl-3-phenyloxiran-2-carboxylate (3.0), allyl amyl glycolate (2.3), allyl caproate (3.2), allylcyclohexyl glycolate (2.7), allylcyclohexyl propionate (4.5), allyl heptanoate (3.2), ambrettelide (5.4), ambroxan® (registered trademark) (4.8), and salicylic acid. Amyl (4.6), Isoamyl salicylate (4.5), Benzyl salicylate (4.3), Bouguénal (3.9), OT-butylcyclohexyl acetate (4.4), PT-butylcyclohexyl acetate (4.4), Cashmeran® (4.5), Cedyl methyl ether (5.0), 1,4-cineole (3.1), 1,8-cineole (3.1), Citronellol (3.6), Citronellyl acetate (4.6), Citronellyl nitrile (3.6), Cyclamenaldehyde (3.9), Cyclohexyl salicylate (4.9), Damascenone (4.2), α -Damascone (4.3), β-Damascone (4.4), δ-Damascone (4.2), γ-Decalactone (2.6), Decanal (3.8), Dihydromyrcenoyl (3.5), Dimethyltetrahydrobenzaldehyde (2.9), Diphenyl oxide (4.1), (1-Cyclohexyl-2-methylpropane-2-yl)butanoate (4.4), Ethylene brushlate (4.7), Ethylenedodecanediol (4.2), Ethyl-2-methylbutyrate (2.3), Eugenol (2.7), Frutate® (3.6), Cyclopenta Cenolide (4.9), geraniol (3.5), geranyl acetate (4.5), geranyl nitrile (3.9), hexyl cinnamic aldehyde (2.8), hexyl acetate (4.8), hexyl salicylate (5.1), cis-3-hexenyl salicylate (4.8), Iso E super (5.2), α-ionone (3.9), β-ionone (4.4), propan-2-yl-2-methylbutanoate (2.7), Javanol (registered trademark) (4.7), γ-decalactone (2.6), Lilial (registered trademark) (4.4), limonene (4.8), linalool (3.0), Linalyl acetate (4.4), Lilal (registered trademark) (3.3), Manzanate (2.8), Methyl dihydrojasmonate (3.5), Methyl anthranilate (2.3), Methyl β-naphthyl ketone (2.9), γ-methyl ionone (4.8), Methyl salicylate (2.6), 11-Oxa-16 hexadecanol (4.9), Nectaril (5.1), Nerol (3.7), Neroline jalayala (3.3), γ-nonalactone (2.1), Nonanal (3.3), Octanal (2.8), Phenylhexanol (3.5), Pi One or more fragrance compounds selected from the following are listed: noacetaldehyde (3.8), propan-2-yl-2-methylbutanoate (2.7), Sandal Mysore Core® (4.7), Spirogalvanone® (5.2), terpineol (3.3), terpinyl acetate (4.3), tetrahydrolinalool (3.6), tricyclodecenyl acetate (2.9), tricyclodecenyl propionate (3.3), γ-undecalactone (3.1), cyclopentadecanol (6.2), and cyclohexadecanol (6.7). Here, the numbers in parentheses are logP values.

[0029] (a1) In the fragrance composition of component (a1), the content of fragrance compound (a11) is 0.01% by mass or more, further 0.1% by mass or more, further 1% by mass or more, further 25% by mass or more, further 50% by mass or more, further 75% by mass or more, and 100% by mass or less, from the viewpoint of residual fragrance and stability.

[0030] The detergent composition A of the present invention contains component (a1) in an amount of preferably 0.01% by mass or more, more preferably 0.1% by mass or more, even more preferably 1% by mass or more, preferably 20% by mass or less, more preferably 10% by mass or less, even more preferably 5% by mass or less, and even more preferably 3% by mass or less, from the viewpoint of residual fragrance and stability.

[0031] The detergent composition B of the present invention contains a fragrance composition as component (a2) which includes a fragrance compound different from component (a1). (a2) The fragrance composition of component (a2) is usually a composition containing multiple fragrance compounds. The fragrance composition of component (a2) is the same as the fragrance composition of component (a1), except that it contains a different fragrance compound from component (a1), and the embodiments described for the fragrance composition of component (a1) can be applied as appropriate.

[0032] (a2) The fragrance composition of component (a2) preferably contains a fragrance compound (hereinafter referred to as fragrance compound (a21)) having a different logP value from fragrance compound (a11) of 1.0 to 8.0, from the viewpoint of adsorption to clothing and stability. Fragrance compound (a21) only needs to contain one or more fragrance compounds of a different type from the fragrance compounds (a11) actually contained in component (a1), and one or more fragrance compounds can be selected from those listed as fragrance compound (a11). Furthermore, the fragrance compound (a21) has a logP value of 1.0 or higher, preferably 2.0 or higher, more preferably 2.5 or higher, and 8.0 or lower, preferably 5.0 or lower, more preferably 4.0 or lower, from the viewpoint of adsorption to clothing and stability.

[0033] (a2) In the fragrance composition of component (a2), the content of fragrance compound (a21) is 0.01% by mass or more, further 0.1% by mass or more, further 1% by mass or more, further 25% by mass or more, further 50% by mass or more, further 75% by mass or more, and 100% by mass or less, from the viewpoint of residual fragrance and stability.

[0034] The detergent composition B of the present invention contains component (a2) in an amount of preferably 0.01% by mass or more, more preferably 0.1% by mass or more, even more preferably 1% by mass or more, preferably 20% by mass or less, more preferably 10% by mass or less, even more preferably 5% by mass or less, and even more preferably 3% by mass or less, from the viewpoint of residual fragrance and stability.

[0035] In the following description, embodiments common to detergent composition A and detergent composition B of the present invention will be referred to as the detergent composition of the present invention.

[0036] The detergent composition of the present invention contains a surfactant as component (b). (b) As the surfactant component, one or more selected from (b1) nonionic surfactants (hereinafter referred to as component (b1)), (b2) anionic surfactants (hereinafter referred to as component (b2)), (b3) cationic surfactants (hereinafter referred to as component (b3)), and (b4) amphoteric surfactants (hereinafter referred to as component (b4)) are included. From the viewpoint of detergency, one or more selected from component (b1) and component (b2) are preferable.

[0037] As the nonionic surfactant of component (b1), a nonionic surfactant (hereinafter referred to as component (b11)) containing an alkyleneoxy group and having an average added mole number of the alkyleneoxy group of 1 or more and 30 or less is preferable. The alkyleneoxy group of component (b11) is preferably one or more groups selected from alkyleneoxy groups having 2 or more and 4 or less carbon atoms. The alkyleneoxy group having 2 or more and 4 or less carbon atoms is preferably one or more groups selected from an ethyleneoxy group and a propyleneoxy group. From the viewpoints of residual fragrance and detergency, the average added mole number of the alkyleneoxy group of component (b11) is 1 or more, preferably 2 or more, more preferably 5 or more, and 30 or less, preferably 20 or less, more preferably 10 or less, still more preferably 8 or less.

[0038] Component (b11) is preferably a nonionic surfactant represented by the following general formula (b11). R 11b (CO) m O-(A 11b O) n -R 12b (b11) [In the formula, R 11b is an aliphatic hydrocarbon group having 8 or more and 18 or less carbon atoms, R 12a is a hydrogen atom or a methyl group. CO is a carbonyl group, and m is a number of 0 or 1. The A 11a O group is an alkyleneoxy group having 2 or more and 4 or less carbon atoms containing an ethyleneoxy group. n is the average added mole number and is a number of 1 or more and 30 or less. ]

[0039] In the general formula (b11), R 11bFrom the viewpoint of cleaning power, the number of carbon atoms is 8 or more, preferably 10 or more, more preferably 12 or more, and 18 or less, preferably 16 or less, more preferably 14 or less. R 11a This is an aliphatic hydrocarbon group, preferably selected from alkyl and alkenyl groups.

[0040] In general formula (b11), A 11b The O group is an alkylene oxy group having 2 to 4 carbon atoms and containing an ethylene oxy group, preferably an alkylene oxy group having 2 to 3 carbon atoms and containing an ethylene oxy group, and more preferably an ethylene oxy group. 11n The O group may be an alkylene oxy group containing an ethylene oxy group and another alkylene oxy group, such as a propylene oxy group. A propylene oxy group is preferred as the other alkylene oxy group. 11n If the oxygen group contains both an ethyleneoxy group and a propyleneoxy group, the ethyleneoxy group and the propyleneoxy group may be linked in a block or random manner.

[0041] In general formula (b11), n ​​is A 11b The average number of added O groups is between 1 and 30. In general formula (b11), n ​​is between 1 and 30, preferably 2 or more, more preferably 5 or more, and between 30 and 30, preferably 20 or less, more preferably 10 or less, and even more preferably 8 or less, from the viewpoint of residual fragrance and cleansing properties.

[0042] (b11) Specific examples of nonionic surfactants that do not have alkylene oxy groups other than component (b11) include one or more selected from sucrose fatty acid esters, glycerin fatty acid esters, sorbitan fatty acid esters, alkyl glycosides, and glyceryl monoethers.

[0043] Examples of anionic surfactants for component (b2) include alkylbenzene sulfonates, alkyl or alkenyl ether sulfates, alkyl or alkenyl sulfates, olefin sulfonates, alkanesulfonates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, α-sulfo fatty acid salts, N-acyl amino acids, phosphate mono or diesters, sulfosuccinates, etc. Examples of alkyl ether sulfates include polyoxyethylene alkyl ether sulfates. The alkyl or alkenyl group of the anionic surfactant has, for example, 8 to 22 carbon atoms. The average number of moles of oxyethylene groups added to the anionic surfactant is, for example, 0 to 10. Examples of counterions to the anionic groups of these anionic surfactants include alkali metal ions such as sodium ions and potassium ions; alkaline earth metal ions such as calcium ions and magnesium ions; ammonium ions; and alkanolamines having 1 to 3 alkanol groups with 2 or 3 carbon atoms (e.g., monoethanolamine, diethanolamine, triethanolamine, triisopropanolamine, etc.). These surfactants can be used individually or in combination of two or more.

[0044] (b2) The component is preferably one or more selected from alkylbenzenesulfonic acid, alkyl sulfate, polyoxyethylene alkyl ether sulfate, alpha sulfo fatty acid ester, and salts thereof, from the viewpoint of cleaning power, and alkylbenzenesulfonic acid or a salt thereof is more preferred. The number of carbon atoms in the alkyl group of alkylbenzenesulfonic acid is preferably 8 or more, more preferably 12 or more, and preferably 18 or less, and more preferably 14 or less.

[0045] Examples of cationic surfactants for component (b3) include alkyltrimethylammonium salts with an alkyl group having 8 to 22 carbon atoms, dialkyldimethylammonium salts with an alkyl group having 8 to 22 carbon atoms, alkyldimethylbenzylammonium salts with an alkyl group having 8 to 22 carbon atoms, and benzethonium salts. Examples of salts include halogen salts and alkyl sulfates with 1 to 3 carbon atoms. These surfactants can be used individually or in combination of two or more.

[0046] Examples of amphoteric surfactants for component (b4) include N-alkanoylaminopropyl-N,N-dimethylamine oxide, N-alkyl-N,N-dimethylamine oxide, N-alkanoylaminopropyl-N,N-dimethyl-N-carboxymethylammonium betaine, N-alkyl-N,N-dimethyl-N-carboxymethylammonium betaine, N-alkyl-N,N-dimethyl-N-sulfopropylammonium sulfobetaine, N-alkyl-N,N-dimethyl-N-(2-hydroxysulfopropyl)ammonium sulfobetaine, N-alkanoylaminopropyl-N,N-dimethyl-N-sulfopropylammonium sulfobetaine, and N-alkanoylaminopropyl-N,N-dimethyl-N-(2-hydroxysulfopropyl)ammonium sulfobetaine. In these, the alkanoyl group is, for example, lauroyl or myristyl. In these, the alkyl group is, for example, a lauryl group or a myristyl group.

[0047] The detergent composition of the present invention contains component (b) in an amount of preferably 5% by mass or more, more preferably 10% by mass or more, even more preferably 20% by mass or more, preferably 80% by mass or less, more preferably 50% by mass or less, and even more preferably 30% by mass or less, from the viewpoint of detergent properties and stability. When the detergent composition of the present invention is a solid detergent composition, component (a) is preferably contained in an amount of 5% by mass or more, more preferably 10% by mass or more, even more preferably 15% by mass or more, and preferably 50% by mass or less, more preferably 40% by mass or less, and even more preferably 30% by mass or less, from the viewpoint of detergent performance and stability. When the detergent composition of the present invention is a liquid detergent composition, it contains component (a) in an amount of preferably 30% by mass or more, more preferably 40% by mass or more, even more preferably 50% by mass or more, and preferably 80% by mass or less, more preferably 70% by mass or less, and even more preferably 60% by mass or less, from the viewpoint of detergent performance and stability. In the present invention, if the detergent composition contains component (b2) as component (b), the value of the mass of component (b2) shall be calculated based on the sodium salt. Furthermore, in the detergent composition of the present invention, if component (b) contains component (b3), the specification regarding the mass of component (b3) shall be the value converted to chloride.

[0048] If the detergent composition of the present invention contains component (b1), it preferably contains component (b1) in an amount of 5% by mass or more, more preferably 10% by mass or more, even more preferably 15% by mass or more, even more preferably 20% by mass or more, and preferably 80% by mass or less, more preferably 50% by mass or less, even more preferably 40% by mass or less, and even more preferably 30% by mass or less, from the viewpoint of residual fragrance, detergent properties and stability.

[0049] If the detergent composition of the present invention contains component (b2), it preferably contains component (b2) in an amount of 5% by mass or more, more preferably 10% by mass or more, even more preferably 20% by mass or more, and preferably 80% by mass or less, more preferably 50% by mass or less, and even more preferably 30% by mass or less, from the viewpoint of detergent properties and stability.

[0050] In the detergent composition of the present invention, when component (b1) and component (b2) are contained, the mass ratio (b1) / (b2) of the content of component (b1) to the content of component (b2) is preferably 0.4 or more, more preferably 0.6 or more, even more preferably 1 or more, and preferably 8 or less, more preferably 6 or less, even more preferably 4 or less, and even more preferably 3 or less.

[0051] When the detergent composition of the present invention is a solid detergent composition, component (c) may contain one or more compounds selected from inorganic sulfates and inorganic halogen compounds. Examples of components (c) include compounds selected from sodium sulfate, magnesium sulfate, sodium chloride, and magnesium chloride. Component (c) may be a hydrate or an anhydrous form.

[0052] If the detergent composition of the present invention contains component (c), it preferably contains component (c) in an amount of 2% by mass or more, more preferably 5% by mass or more, even more preferably 10% by mass or more, even more preferably 20% by mass or more, even more preferably 30% by mass or more, and preferably 60% by mass or less, more preferably 50% by mass or less, and even more preferably 40% by mass or less, from the viewpoint of stability.

[0053] When the detergent composition of the present invention is a solid detergent composition, component (d) may contain one or more alkaline agents selected from alkali metal carbonates, alkali metal bicarbonates, alkali metal silicates, and tripolyphosphates. Examples of alkali metal carbonates include sodium carbonate and potassium carbonate, with sodium carbonate being preferred. Examples of alkali metal bicarbonates include sodium bicarbonate and potassium bicarbonate. Examples of alkali metal silicates include sodium silicate and potassium silicate. Examples of tripolyphosphates include alkali metal salts of tripolyphosphate.

[0054] If the detergent composition of the present invention contains component (d), it preferably contains component (d) in an amount of 2% by mass or more, more preferably 5% by mass or more, even more preferably 10% by mass or more, even more preferably 20% by mass or more, and preferably 80% by mass or less, more preferably 60% by mass or less, even more preferably 50% by mass or less, and even more preferably 40% by mass or less, from the viewpoint of detergent properties and stability.

[0055] When the detergent composition of the present invention is a solid detergent composition, it may contain one or more compounds selected from zeolite and bentonite as component (e).

[0056] Zeolite is also called crystalline aluminosilicate. Specifically, it can contain crystalline aluminosilicates such as type A, type X, and type P zeolites. Its average primary particle size is preferably 0.1 μm or more, more preferably 1 μm or more, and preferably 10 μm or less, and more preferably 5 μm or less. A preferred crystalline aluminosilicate is type A zeolite (for example, trade name "Toyobuilder": manufactured by Tosoh Corporation, oil absorption capacity according to JIS K 5101: 40 mL / 100 g or more). Other suitable options include P-type (e.g., trade names "Doucil A24", "ZSEO64", etc.; both manufactured by Crosfield; oil absorption capacity 60-150 mL / 100 g), X-type (e.g., trade name "WessalithXD"; manufactured by Degussa; oil absorption capacity 80-100 mL / 100 g), and hybrid zeolites described in International Publication No. 98 / 42622.

[0057] The bentonite is preferably one having an ion exchange capacity of 50 to 100 meq / 100g. Examples of bentonite include (d1) montmorillonite group mineral clay selected from the group consisting of alkali metal or alkaline earth metal montmorillonite, saponite, or hectorite, (d2) illite, (d3) attapulgite, and (d4) kaolinite. The bentonite can be used in granular form. For example, refer to the clay mineral granules in Japanese Patent Publication No. 2008-189719.

[0058] If the detergent composition of the present invention contains component (e), it preferably contains component (e) in an amount of 2% by mass or more, more preferably 5% by mass or more, even more preferably 10% by mass or more, and preferably 50% by mass or less, more preferably 30% by mass or less, and even more preferably 20% by mass or less, from the viewpoint of softness and stability of textile products.

[0059] When the detergent composition of the present invention is a solid detergent composition, component (f) may contain a polymer having a carboxylic acid group or a salt thereof and having a weight-average molecular weight of 3000 or more. (f) Component may include polyacrylic acid or its salts and polymers selected from copolymers of acrylic acid and maleic acid or its salts (hereinafter referred to as (f1) component). Examples of polyacrylic acid or its salts include polyacrylic acid, sodium polyacrylate, potassium polyacrylate, and the like, with sodium polyacrylate and potassium polyacrylate being preferred. Examples of acrylic acid-maleic acid copolymers or their salts include acrylic acid-maleic acid copolymers, sodium salts of acrylic acid-maleic acid copolymers, potassium salts of acrylic acid-maleic acid copolymers, and preferably sodium salts of acrylic acid-maleic acid copolymers and potassium salts of acrylic acid-maleic acid copolymers. The molar ratio of the acrylic acid-maleic acid copolymer is preferably 1 / 99 or more, more preferably 10 / 90 or more, and preferably 99 / 1 or less, and more preferably 90 / 10 or less, as the number of moles of acrylic acid / the number of moles of maleic acid.

[0060] Component (f1) may be a copolymer containing monomers other than acrylic acid and maleic acid that are copolymerizable with acrylic acid and / or maleic acid, as long as they do not hinder the expression of the effects of the present invention. Examples of monomers other than acrylic acid and maleic acid that are copolymerizable with acrylic acid and / or maleic acid include vinyl monomers, acrylic monomers, styrene monomers, etc., and more specifically, examples include methacrylic acid, methyl acrylate, ethyl acrylate, methyl methacrylate, styrene, etc. The molar ratio of monomers other than acrylic acid and maleic acid that are copolymerizable with acrylic acid and / or maleic acid in component (f1) is preferably 0 mol% or more, preferably 5 mol% or less, more preferably 3 mol% or less, and even more preferably 0 mol% in component (f1). Accordingly, the polyacrylic acid or its salt, and the copolymer of acrylic acid and maleic acid or its salt of the present invention may be polymers or copolymers that contain, in the total constituent monomers, monomers other than acrylic acid and maleic acid that are copolymerizable with acrylic acid and / or maleic acid in an amount of 0 mol% to 5 mol%.

[0061] (f) The weight-average molecular weight of component is 3000 or more, preferably 3500 or more, more preferably 4000 or more, even more preferably 5000 or more, even more preferably 6000 or more, even more preferably 7000 or more, even more preferably 8000 or more, even more preferably 9000 or more, even more preferably 10000 or more, and preferably 100000 or less, more preferably 50000 or less. This weight-average molecular weight can be measured according to the weight-average molecular weight measurement method described below. <Method for measuring weight-average molecular weight> (f) The weight-average molecular weight of component (f) can be measured by GPC (gel permeation chromatography), and the weight-average molecular weight (Mw) can be determined using a conversion standard substance. The GPC measurement conditions are shown below. • Column: Manufactured by Tosoh Corporation, Product name: TSK-GEL guard PWXL Manufactured by Tosoh Corporation, Product name: TSK-GEL G4000 PWXL Manufactured by Tosoh Corporation, Product name: TSK-GEL G2500 PWXL Mobile phase: 0.1 mol / L potassium phosphate and 0.1 mol / L sodium dihydrogen phosphate aqueous solutions / acetonitrile = 90 / 10 (volume ratio) • Detector: Differential refractive index detector Column temperature: 40°C ·Flow rate: 1.0mL / min • Conversion reference material: Polyacrylic acid [manufactured by American Standard Corporation] • Sample: An aqueous polymer solution containing 0.8 g of solids is mixed with deionized water to prepare a total volume of 200 mL. 10 μL of this prepared solution is then taken and injected into the column.

[0062] If the detergent composition of the present invention contains component (f), component (f) is preferably contained in an amount of 0.1% by mass or more, more preferably 0.5% by mass or more, even more preferably 2% by mass or more, even more preferably 5% by mass or more, and preferably 20% by mass or less, more preferably 15% by mass or less, and even more preferably 10% by mass or less, from the viewpoint of detergent performance and stability.

[0063] When the detergent composition of the present invention is a solid detergent composition, the solid detergent composition may be in the form of a powder, granules, or granular material. From the viewpoint of cleaning power, it is preferable that the detergent composition of the present invention is one or more solid detergent compositions selected from powder, granules, and granular material. Solid detergent compositions can be manufactured by known methods. For example, they can be manufactured by spray drying, dry neutralization, dry granulation, dry blending, fluidized bed drying, thin film drying, extrusion granulation, rolling granulation, agitation granulation, compaction granulation, surfactant loading, or a combination of these methods selected from among them. In the case of a powder detergent composition, the bulk density varies depending on the manufacturing method, but is preferably 0.2 g / cm³. 3 More preferably 0.3 g / cm³ 3 More preferably 0.35 g / cm³ 3 In addition, preferably 1 g / cm³ 3 More preferably, 0.95 g / cm³ 3 More preferably, 0.9 g / cm³ 3 The following applies: In the case of a powder detergent composition, the average particle size is preferably 100 μm or more, more preferably 150 μm or more, even more preferably 200 μm or more, and preferably 800 μm or less, more preferably 750 μm or less, and even more preferably 700 μm or less.

[0064] If the detergent composition of the present invention is a liquid detergent composition, it may contain an alkanolamine as component (g). Examples of alkanolamines include one or more compounds selected from monoethanolamine, diethanolamine, triethanolamine, N-methylmonoethanolamine, N-methyldiethanolamine, and N,N-dimethylmonoethanolamine.

[0065] If the detergent composition of the present invention contains component (g), from the viewpoint of stability, component (g) is preferably contained in an amount of 0.01% by mass or more, more preferably 0.1% by mass or more, even more preferably 1% by mass or more, even more preferably 5% by mass or more, and preferably 30% by mass or less, more preferably 20% by mass or less, and even more preferably 15% by mass or less.

[0066] When the detergent composition of the present invention is a liquid detergent composition, it may contain a polyalkylene glycol with a weight-average molecular weight of 100 to 100,000 as component (h). (h) The component may be one or more selected from polyethylene glycol and polypropylene glycol. The weight-average molecular weight of component (h) is 100 or more, preferably 1000 or more, and 10000 or less, preferably 2000 or less. Here, the weight-average molecular weight is the value obtained using gel permeation chromatography with polystyrene as the standard substance.

[0067] If the detergent composition of the present invention contains component (h), from the viewpoint of stability, component (h) is preferably contained in an amount of 0.001% by mass or more, more preferably 0.01% by mass or more, even more preferably 0.1% by mass or more, even more preferably 1% by mass or more, even more preferably 5% 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, and even more preferably 20% by mass or less.

[0068] If the detergent composition of the present invention is a liquid detergent composition, it may contain a polyhydric alcohol as component (i). (i) More specifically, the components include polyhydric alcohols having 2 to 12 carbon atoms, preferably 10 or less, more preferably 8 or less, and with a valency of 2 to 12, preferably 10 or less, more preferably 8 or less. Specific compounds include, for example, ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, dipropylene glycol, tripropylene glycol, and glycerin.

[0069] If the detergent composition of the present invention contains component (i), from the viewpoint of stability, component (i) is preferably contained in an amount of 0.001% by mass or more, more preferably 0.01% by mass or more, even more preferably 0.1% by mass or more, even more preferably 1% by mass or more, even more preferably 5% by mass or more, even more preferably 10% by mass or more, even more preferably 15% by mass or more, even more preferably 20% by mass or more, and, and, preferably 35% by mass or less, more preferably 30% by mass or less, and even more preferably 25% by mass or less.

[0070] If the detergent composition of the present invention is a liquid detergent composition, it may contain water. The water can be deionized water (sometimes called ion-exchanged water) or water to which sodium hypochlorite has been added at a rate of 1 mg / kg to 5 mg / kg. Tap water can also be used.

[0071] If the detergent composition of the present invention contains water, from the viewpoint of stability, it preferably contains 0.01% by mass or more, more preferably 0.1% by mass or more, even more preferably 1% by mass or more, and preferably 90% by mass or less, more preferably 50% by mass or less, and even more preferably 10% by mass or less.

[0072] The detergent composition of the present invention may contain other components known in the field of laundry detergents, such as bleaching agents (perborate, bleach activators, etc.), anti-redeposition agents, reducing agents (sulfites, etc.), fluorescent whitening agents, anti-foaming agents (silicone, etc.), enzymes (cellulase, protease, peptinase, lipase, dextranase, amylase, etc.), colorants, antibacterial agents, etc.

[0073] In the method for washing textile products of the present invention, when multiple small bags A are placed in the washing tub, each detergent composition A contained in each small bag may be the same or different in type (solid detergent composition or liquid detergent composition), the components it contains, and the amount of each component, within the scope of the embodiments of detergent composition A of the present invention described above. In the method for washing textile products of the present invention, when multiple small bags B are placed in the washing tub, the detergent composition B contained in each small bag may be the same or different in type (solid detergent composition or liquid detergent composition), the components it contains, and the amount of each component, within the scope of the embodiments of the detergent composition B of the present invention described above.

[0074] In the method for washing textile products of the present invention, the amount of water to be added to the washing tub is such that, from the viewpoint of cleaning performance and ease of use in weight, the total amount of detergent compositions A and B of the present invention added to the washing tub is preferably 0.1 g or more, more preferably 0.2 g or more, even more preferably 0.3 g or more, preferably 3 g or less, more preferably 2 g or less, and even more preferably 1 g or less, per 1 L of water added to the washing tub. The total amount of detergent compositions A and B of the present invention to be placed in the washing machine tub refers to the total amount of detergent composition A contained in each small bag A and detergent composition B contained in each small bag B, which are placed in the washing machine tub.

[0075] In the method for washing textile products of the present invention, the mass ratio (detergent composition A / detergent composition B) of the total amount of detergent composition A contained in each small bag A placed in the washing tub to the total amount of detergent composition B contained in each small bag B is preferably 0.1 or more, more preferably 0.3 or more, even more preferably 0.5 or more, and preferably 4 or less, more preferably 2 or less, and even more preferably 1 or less, from the viewpoint of cleaning performance and residual fragrance.

[0076] In the present invention's method for washing textile products, examples of textile products to be washed include woven fabrics, knitted fabrics, nonwoven fabrics, and other fabrics, as well as products made using these fabrics, such as undershirts, T-shirts, dress shirts, blouses, slacks, hats, handkerchiefs, towels, knitwear, socks, underwear, and tights.

[0077] In the method for washing textile products of the present invention, the value of the bath ratio, which is expressed as the ratio of the mass (kg) of the textile product to the amount (liters) of the washing solution containing the detergent compositions A and B of the present invention and water, i.e., the value of the amount (liters) of the washing solution / mass (kg) of the textile product, is preferably 2 or more, more preferably 3 or more, even more preferably 4 or more, even more preferably 5 or more, and preferably 45 or less, more preferably 40 or less, even more preferably 30 or less, and even more preferably 20 or less, from the viewpoint of washing performance and economy.

[0078] In the present invention, a washing machine is used for washing textile products. The washing time is preferably 1 minute or more, more preferably 2 minutes or more, even more preferably 3 minutes or more, and preferably 1 hour or less, more preferably 30 minutes or less, even more preferably 20 minutes or less, and even more preferably 15 minutes or less, from the viewpoint of cleanliness and convenience.

[0079] After washing textile products, they can be rinsed and spun dry using a washing machine. Rinsing and spinning can be done alternately multiple times. After rinsing and dewatering, drying can be performed. Drying can be done by natural drying or heat drying. Multiple drying cycles can be performed for each method.

[0080] [Textile Cleaning Kit] The present invention provides a kit for washing textile products, comprising one or more of the following small bags A and B. Small bag A: A small bag containing a fragrance composition (hereinafter referred to as (a1) component) containing a fragrance compound, which contains detergent composition A. Small bag B: A small bag containing detergent composition B, which contains a fragrance composition containing a fragrance compound different from the components of (a2) and (a1).

[0081] The detergent composition A and the pouch A containing it, and the detergent composition B and the pouch B containing it, used in the textile product washing kit of the present invention, are the same as the detergent composition A and the pouch A containing it, and the detergent composition B and the pouch B containing it, respectively, as described in the method for washing textile products of the present invention, and their specific embodiments are also the same.

[0082] The textile product cleaning kit of the present invention comprises one or more pouches A containing detergent composition A of the present invention, and one or more pouches B containing detergent composition B of the present invention. Each detergent composition A contained in each pouch A may be the same or different in type (solid detergent composition or liquid detergent composition), the components it contains, and the amount of each component, within the range of detergent composition A of the present invention described above. Similarly, each detergent composition B contained in each pouch B may be the same or different in type (solid detergent composition or liquid detergent composition), the components it contains, and the amount of each component, within the range of detergent composition B of the present invention described above.

[0083] The mass ratio (cleaning agent composition A / cleaning agent composition B) of the total amount of cleaning agent composition A contained in each small bag A constituting the textile product cleaning kit of the present invention to the total amount of cleaning agent composition B contained in each small bag B is preferably 0.1 or more, more preferably 0.3 or more, even more preferably 0.5 or more, and preferably 4 or less, more preferably 2 or less, and even more preferably 1 or less, from the viewpoint of the form in which it is used.

[0084] The textile product washing method of the present invention can be easily performed by placing one or more pouches A and B, which constitute the textile product washing kit of the present invention, into a washing tub where textile products are stacked, so that pouches A and B are in different positions in the direction in which the textile products are stacked. In other words, the textile product washing kit of the present invention is suitable for the textile product washing method of the present invention. The textile product washing kit of the present invention can be appropriately adapted to the embodiments described in the method for washing textile products of the present invention. [Examples]

[0085] The components used in the examples and comparative examples are as follows. <(a1) component> • Fragrance composition (1): Methyl salicylate, LogP 2.6, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd. <(a2) component> • Fragrance composition (2): Phenylethyl alcohol, LogP 1.6, manufactured by Tokyo Chemical Industry Co., Ltd. <(b) Component> • C12EO6: Polyoxyethylene lauryl ether, Emulgen 106 (manufactured by Kao Corporation) (average number of moles of oxyethylene groups added is 6 moles), (b1) component • C12EO10: Polyoxyethylene lauryl ether, Emulgen 110 (manufactured by Kao Corporation) (average number of moles of oxyethylene groups added is 10 moles), (b1) component • LAS: Sodium laurylbenzenesulfonate, Neoperex G-15 (manufactured by Kao Corporation), (b2) ingredient <(c) component> • Sodium sulfate: Sodium sulfate, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd. • Sodium Chloride: Sodium chloride, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd. <(d) component> • Sodium carbonate: Sodium carbonate, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd. <(e) component> • Zeolite: Synthetic zeolite, A-4, powder, 75 μm (200 mesh) pass-through, manufactured by Fujifilm Wako Pure Chemical Corporation. <(f) component> • Sodium polyacrylate: Sodium polyacrylate, manufactured by Kao Corporation; Product name: Poise 536 (average molecular weight 10,000) <(g) component> • Monoethanolamine: Monoethanolamine, manufactured by Mitsui Chemicals, Inc. <(h) component> • Polyethylene glycol: Manufactured by Fujifilm Wako Pure Chemical Corporation; (Mass-average molecular weight 6000) <(i) Components> • Propylene glycol: Manufactured by Fujifilm Wako Pure Chemical Corporation Glycerin: Manufactured by Fujifilm Wako Pure Chemical Corporation

[0086] <Preparation of detergent composition> The solid detergent compositions A and B of Examples 1 to 5 and Comparative Example 1 were prepared by the following method. Components (c), (d), and (e), which form spray-dried particles, were mixed to prepare a slurry, which was then spray-dried to prepare base granules. Components (a) and (b) were added to the base granules and dry neutralization was performed. Finally, the mixture was placed in a high-speed mixer (manufactured by Fukae Kogyo Co., Ltd.) and the remaining after-blend component (f) was dry-mixed to achieve a bulk density of 0.70-0.90 g / cm³. 3 Various powdered solid detergent compositions were obtained.

[0087] In Example 6, liquid detergent compositions A and B were prepared by adding components (a), (b), (g), (h), and (i) respectively to 30°C deionized water, which was necessary to produce a final mass of 100g.

[0088] In Comparative Example 2, solid detergent compositions A and B were prepared by melting and kneading the raw materials, stirring thoroughly, cooling to form a solid, and then grinding it to a maximum size of 6 mm or less before molding.

[0089] <Making small bags> Small bags A and B, each containing one of the detergent compositions prepared in Examples 1 to 6, were prepared by the following method. Two 15cm x 2cm water-soluble films (M8685, manufactured by Monosol Co., Ltd.) were layered, and three sides were fused together using a heat sealer (manufactured by Fuji Impulse Co., Ltd.), creating a bag with one side open. 20g of each cleaning agent composition was placed in this bag. Then, the open side of the bag was fused together using heat sealing to obtain small bags A and B containing each cleaning agent composition. The total surface area of ​​the water-soluble film in contact with the cleaning agent composition was 30cm². 2 That was the case.

[0090] <Fragrance Evaluation> In the washing tub of a top-loading washing machine (Panasonic Corporation, NA-F70PB1), small bag A was placed at the bottom for Examples 1-6, and detergent composition A was placed for Comparative Examples 1 and 2. After placing the bags, cotton T-shirts (Gunze Corporation) were stacked on top of each other in the washing tub. At a position 15 cm away from the bottom of the stacked cotton T-shirts (the bottom of the washing tub) in the direction of stacking, small bag B was placed for Examples 1-6, and detergent composition B was placed for Comparative Examples 1 and 2. After placing the bags, more cotton T-shirts were stacked on top, and 2 kg of cotton T-shirts were placed in the washing tub to fill it. The mass ratio of detergent composition A and detergent composition B (detergent composition A / detergent composition B) was 1.0. 20 liters of water were added to adjust the cleaning solution so that the concentration of the detergent composition was 1 g / L, and the machine was washed on a speed cycle (wash time 3 minutes, rinse time 3 minutes, spin-dry time 7 minutes). After washing, the cotton T-shirts at the bottom of the stack in the washing machine drum, and the cotton T-shirts located 15 cm away from the bottom in the direction of stacking, were removed and dried overnight in a constant temperature and humidity room at 20°C and 65% RH. A sensory evaluation was conducted on the dried cotton T-shirts. Ten panelists (experts with more than three years of experience in sensory evaluation of fragrance intensity) evaluated whether they could perceive different fragrances in two cotton T-shirts taken from each example and comparative example. Table 1 shows the number of panelists who were able to detect different scents from the two cotton T-shirts taken out for each example and comparative example. The more panelists who were able to detect a strong scent, the more likely it is that different scents can be detected between textile products after washing.

[0091] [Table 1]

Claims

1. A method for washing textile products using a washing machine, in which one or more small bags A and B are placed in a washing tub where textile products are stacked, such that small bags A and B are at different positions in the stacking direction, either at the bottom, top, or between the stacked textile products, and are separated from each other by at least 10 cm in the stacking direction, and the products are washed. A method for washing textile products, wherein the aforementioned small bags A and B are each made of a water-soluble film. Small bag A: A small bag containing a fragrance composition (hereinafter referred to as component (a1)) containing a fragrance compound, which contains detergent composition A. Small bag B: A small bag containing a cleaning agent composition B, which contains a fragrance composition (hereinafter referred to as component (a2)) that contains a fragrance compound different from component (a1).

2. The method for washing textile products according to claim 1, wherein one or more items each from small bag A and small bag B, and the textile products are placed into the washing tub, and then water is added.

3. The method for washing textile products according to claim 1, wherein in detergent composition A, component (a1) is a fragrance composition containing a fragrance compound (a11) having a logP value of 1.0 or more and 8.0 or less, and in detergent composition B, component (a2) is a fragrance composition containing a fragrance compound (a21) different from the fragrance compound (a11) having a logP value of 1.0 or more and 8.0 or less.

4. The method for washing textile products according to claim 1, wherein detergent composition A and detergent composition B each contain (b) a surfactant (hereinafter referred to as component (b)).

5. The method for washing textile products according to claim 4, wherein in detergent composition A and detergent composition B, component (b) is one or more selected from (b1) nonionic surfactant (hereinafter referred to as component (b1)) and (b2) anionic surfactant (hereinafter referred to as component (b2)).

6. (b1) The method for washing textile products according to claim 5, wherein component (b1) is a nonionic surfactant containing alkylene oxy groups, and the average number of added alkylene oxy groups is 1 or more and 30 or less.

7. The method for washing textile products according to claim 4, wherein the content of component (b) in detergent composition A and detergent composition B is 5% by mass or more and 80% by mass or less, respectively.

8. The method for washing textile products according to claim 1, wherein the washing machine is a top-loading washing machine.

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