Detergent article for fiber product

Abstract

Provided is a detergent article for a fiber product, which is obtained by packaging a detergent composition containing 5-80 mass% inclusive of a surfactant (a) (hereinafter referred to as component (a)) in a water-soluble film, and which has a major axis diameter of 30-200 mm inclusive in the maximum projected area, the aspect ratio (major axis diameter / minor axis diameter) between the major axis diameter and the minor axis diameter orthogonal to the major axis diameter is 5 or more, and the rupture strength is 300 N or more.

Description

Technical Field

[0001] The present invention relates to a detergent article for fiber products. Background Art

[0002] With the increase in dual-income families, people are having trouble finding time to do housework, and the washing environment in which washing machines are used is changing. Specifically, there is an increasing trend of washing large quantities of textiles at once, or shortening the washing time setting of washing machines to further shorten washing time.

[0003] Furthermore, in the washing of textile products, detergent articles in which the detergent composition is packaged in a water-soluble film are widely and commonly used in order to save the time of metering the detergent composition.

[0004] Japanese Patent Gazette No. 02-155999 discloses an article characterized by comprising: (1) an aqueous liquid detergent containing about 10 to about 24 weight percent water and a substantially organic neutralizing system, and (2) a packaging material for the above-mentioned aqueous liquid detergent prepared from a water-soluble film-forming substance that maintains structural integrity when in substantial direct contact with the aqueous liquid detergent.

[0005] Japanese Patent Application Laid-Open No. 2002-003897 discloses a cleaning product comprising a detergent, bleach, softener, paste, or other cleaning composition containing a surfactant, packaged in a water-soluble film comprising (a) a fatty acid ester of vinyl alcohol and (b) a copolymer obtained by polymerizing and saponifying a specific unsaturated compound.

[0006] Japanese Patent Application Laid-Open No. 05-320699 discloses a bath heater cleaner comprising a composition containing 50-95 wt% percarbonate, 2-30 wt% organic acid, and 0.1-10 wt% anionic surfactant, contained in a water-soluble polymer film bag. Summary of the Invention

[0007] For example, detergent articles packaged with a detergent composition preferably have a burst strength greater than a certain value to prevent them from breaking during handling. When a detergent article packaged with a detergent composition having a burst strength greater than a certain value is used to clean textile products for a short period of time (6 to 9 minutes), the detergent composition within takes approximately 1 to 2 minutes to dissolve in the cleaning water, shortening the actual cleaning time. This is unsatisfactory for consumers who desire a thorough cleaning of their textile products, and harms their interests.

[0008] Furthermore, since detergents are bulky, if they are randomly placed in the laundry room, it will feel untidy and the space cannot be used effectively. Therefore, it is desirable to store detergents as compactly as possible.

[0009] The present invention provides a detergent article for textile products and a method for washing textile products, wherein even when the detergent article, comprising a detergent composition packaged in a water-soluble film, is used for short-term (6 to 9 minutes) cleaning of textile products, a decrease in cleaning power is suppressed.

[0010] The present invention relates to a detergent article for fiber products, wherein the detergent article for fiber products is formed by packaging a detergent composition containing 5% by mass or more and 80% by mass or less of (a) a surfactant (hereinafter referred to as component (a)) in a water-soluble film, wherein the major axis diameter of the maximum projected area of ​​the detergent article is 30 mm or more and 200 mm or less, the aspect ratio of the major axis diameter to the minor axis diameter orthogonal to the major axis diameter (major axis diameter / minor axis diameter) is 5 or more, and the burst strength is 300 N or more.

[0011] The present invention also relates to a method for washing fiber products, comprising contacting the fiber product detergent of the present invention, the fiber product, and water.

[0012] According to the present invention, a detergent article for textile products and a method for washing textile products are provided, which can suppress a decrease in cleaning power even when the detergent article, which comprises a detergent composition packaged in a water-soluble film, is used for short-term (6 to 9 minutes) cleaning of textile products. DETAILED DESCRIPTION

[0013] The mechanism by which the textile cleaning article and textile cleaning method of the present invention can suppress a decrease in cleaning power even when used for short-term (6 to 9 minutes) cleaning of textiles is not yet determined, but is presumed as follows.

[0014] When cleaning a cleaning article having an aspect ratio (major axis diameter / minor axis diameter) of less than 5, a fiber product, and water are brought into contact, the cleaning article is less likely to become entangled with the fiber product. Therefore, the cleaning article is disintegrated by the dissolution of the water-soluble membrane in the water and the external force from the fiber product. As a result, it takes time for the cleaning composition inside to dissolve in the cleaning water. If the cleaning time is too short, there is a concern that the cleaning power will be reduced.

[0015] On the other hand, in the present invention, a long strip-shaped cleaning article having an aspect ratio (major axis diameter / minor axis diameter) of 5 or more is used. When the cleaning article, a fiber product, and water are brought into contact for cleaning, it is presumed that the cleaning article is easily entangled with the fiber product. Therefore, the cleaning article is easily disintegrated by the dissolution of the water-soluble film in water and the external force from the fiber product, thereby shortening the time until the internal cleaning composition dissolves in the cleaning water, and suppressing the decrease in cleaning power even during short cleaning times.

[0016] Furthermore, the mechanism of action of the present invention is not limited to the above.

[0017] [Cleaning Items]

[0018] The present invention relates to a detergent article for fiber products, wherein the detergent article is formed by packaging a detergent composition in a water-soluble film, wherein the major axis diameter of the maximum projected area of ​​the detergent article is 30 mm to 200 mm, the aspect ratio of the major axis diameter to the minor axis diameter perpendicular to the major axis diameter (major axis diameter / minor axis diameter) is 5 or more, and the burst strength is 300 N or more.

[0019] The detergent article for fiber products of the present invention may be a detergent article for fiber products composed of a detergent composition and a water-soluble film, and the above-mentioned detergent composition is packaged by the above-mentioned water-soluble film, the major axis diameter of the maximum projected area of ​​the above-mentioned detergent article is greater than 30 mm and less than 200 mm, the aspect ratio of the major axis diameter to the minor axis diameter perpendicular to the major axis diameter (major axis diameter / minor axis diameter) is greater than 5, and the burst strength is greater than 300N.

[0020] In addition, in this specification, the detergent article for textile products of the present invention may be referred to as a detergent article.

[0021] Regarding the aspect ratio of the major axis diameter of the maximum projected area of ​​the cleaning article to the minor axis diameter orthogonal to the major axis diameter (major axis diameter / minor axis diameter), from the viewpoint of suppressing the decrease in cleaning power even during short cleaning times, it is 5 or more, preferably 6 or more, more preferably 7 or more, and even more preferably 8 or more. From the viewpoint of ease of use and storage, it is preferably 20 or less, more preferably 16 or less, even more preferably 13 or less, and even more preferably 10 or less.

[0022] From the perspective of ease of use, the major axis diameter of the maximum projected area of ​​the detergent article is 30 mm or more, preferably 50 mm or more, more preferably 80 mm or more, and is 200 mm or less, preferably 160 mm or less, more preferably 120 mm or less.

[0023] From the perspective of ease of use, the minor axis diameter of the maximum projected area of ​​the cleaning article is preferably 5 mm or more, more preferably 10 mm or more, further preferably 12 mm or more, further more preferably 14 mm or more, and is preferably 25 mm or less, more preferably 23 mm or less, further preferably 20 mm or less.

[0024] In the present invention, the maximum projected area refers to the area of ​​the projection that maximizes the horizontal projection area when the cleaning object is projected horizontally from all sides. "Projection" is synonymous with the mathematical concept of "projection," which involves shining parallel light on an object horizontally and projecting its shadow onto a plane.

[0025] In addition, in the present invention, regarding the method for measuring the major axis diameter and minor axis diameter of the maximum projected area of ​​a cleaning article, when the shape of the maximum projected area of ​​the cleaning article is elliptical, the major axis diameter and minor axis diameter are directly measured. Furthermore, when the shape of the maximum projected area of ​​the cleaning article is rectangular (the length of the vertical axis > the length of the horizontal axis), the length of the vertical axis is measured as the major axis diameter, and the length of the horizontal axis is measured as the minor axis diameter. Furthermore, when the shape of the maximum projected area of ​​the cleaning article is amorphous, the longest portion is measured as the major axis diameter, and the longest portion of a line (axis) perpendicular to the major axis diameter is measured as the minor axis diameter.

[0026] The maximum projected area of ​​the detergent article includes the water-soluble film packaging the detergent composition and also includes portions where the water-soluble films overlap with each other, such as a sealing portion.

[0027] For example, when two water-soluble films are bonded together and used to package a detergent composition, the larger the area of ​​contact between the water-soluble film and the detergent composition, the more preferable. When two water-soluble films are bonded together and used to package a detergent composition, the ratio of the area of ​​each water-soluble film in contact with the detergent composition to the total area of ​​the surface facing the other water-soluble films is preferably 60% or more, more preferably 70% or more, even more preferably 80% or more, even more preferably 90% or more, and less than 100%. In this specification, the area of ​​contact between the water-soluble film and the detergent composition may be the area of ​​the surface of the water-soluble film that forms the space for accommodating the detergent composition.

[0028] In addition, detergent articles can be connected under the state that the end of the water-soluble film of packaging detergent composition can be separated from the end of the water-soluble film of packaging other detergent compositions.In this case, the aspect ratio (major axis diameter / minor axis diameter) of the major axis diameter of the maximum projected area of ​​detergent articles and the minor axis diameter orthogonal to the major axis diameter is to calculate the maximum projected area of ​​detergent articles for the water-soluble film of each packaging detergent composition, and is measured based on the calculated maximum projected area. That is, in the case of detergent articles connected under the state that the end of the water-soluble film of packaging detergent composition can be separated from each other, the aspect ratio is to separate the connecting portion of the water-soluble film of packaging detergent composition and measure. Furthermore, when the connecting portion is unclear, the line divided equally by each packaged detergent composition can be regarded as the connecting portion.

[0029] The detergent article for textile products of the present invention is obtained by packaging the detergent composition of the present invention in a water-soluble film.

[0030] The detergent article for textile products of the present invention may be a detergent article for textile products composed of the detergent composition of the present invention and a water-soluble film, wherein the detergent composition is packaged by the water-soluble film.

[0031] In the present invention, a water-soluble film refers to a film obtained by placing 500 g of ion-exchanged water at 30°C in a 1-liter glass beaker, adding a stirring bar made of Teflon (registered trademark) with a diameter of 8 cm, adding 1 g of the film to be evaluated, and stirring at 100 rpm for 30 minutes, and then observing no insoluble matter on the surface of the film.

[0032] The thickness of the water-soluble film is preferably 70 μm or more, more preferably 100 μm or more, from the perspective of the strength of the cleaning article, and is preferably 200 μm or less, more preferably 140 μm or less, from the perspective of suppressing a decrease in cleaning power even during short cleaning times.

[0033] The water-soluble film is preferably composed of a polymer. The water-soluble film can be obtained by methods known in the art, such as casting, blow molding, extrusion molding, injection molding, etc. of the polymer. As a non-limiting example of the polymer for making the water-soluble film, there can be cited: polyvinyl alcohol (PVA), vinyl alcohol copolymer, polyvinyl pyrrolidone, polyalkylene oxide, (modified) cellulose, (modified) cellulose-ether or -ester or -amide, polycarboxylic acids and their salts such as polyacrylates, copolymers of maleic acid / acrylic acid, polyamino acids, i.e. peptides, polyamides such as polyacrylamide, polysaccharides such as starch and gelatin, natural rubbers such as xanthan gum and carragan (carragum). Vinyl alcohol copolymer is a copolymer of vinyl alcohol and other monomers, such as ethylene, acrylic acid, etc. It is preferred that the water-soluble film comprises a polymer selected from 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 comprises a polymer selected from polyvinyl alcohol, vinyl alcohol copolymers, and hydroxypropyl methylcellulose. Even more preferably, the water-soluble film comprises polyvinyl alcohol, such as Solublon available from AICELLO Co., Ltd. Polymers suitable for water-soluble film production of bags are described, for example, in U.S. Patent No. 6,995,126.

[0034] In the detergent article for textile products of the present invention, the total area of ​​the water-soluble film in contact with the detergent composition of the present invention is preferably 2 cm from the viewpoint of further improving the stability of the product. 2 More than 5cm, more preferably 2 More than 7cm, more preferably 2 More than 15 cm, more preferably 2 More than 30 cm, more preferably 2 Above, and, from the same viewpoint, preferably 100 cm 2 Below, more preferably 70cm 2 Below, more preferably 60cm 2 Below, more preferably 50cm 2 the following.

[0035] The detergent article of the present invention can be produced by any preferred process known in the art, such as a known process for producing detergent bags. Examples of bag production processes are described in U.S. Patent No. 6,995,126, U.S. Patent No. 7,127,874, U.S. Patent No. 8,156,713, U.S. Patent No. 7,386,971, U.S. Patent No. 7,439,215, U.S. Patent Application Publication No. 2009 / 199877, Japanese Patent No. 6915017, and Japanese Patent No. 4514858.

[0036] In the detergent article for fiber products of the present invention, the amount of the contents per detergent article (i.e., the amount of the detergent composition enclosed in the water-soluble film) is preferably 8 g or more, more preferably 10 g or more, and even more preferably 12 g or more from the viewpoint of cleaning performance, and is preferably 30 g or less, more preferably 26 g or less, and even more preferably 22 g or less from the viewpoint of miniaturization and storage of the detergent article.

[0037] From the viewpoint of preventing the detergent article from being easily broken during handling, the bursting strength of the detergent article of the present invention is 300 N or more, preferably 350 N or more, and more preferably 400 N or more.

[0038] The burst strength of a cleaning article is measured at room temperature (20°C) and a relative humidity of approximately 50%. A compression tester (e.g., AUTOGRAPH AG-X, manufactured by Shimadzu Science Co., Ltd.) is used. The cleaning article is placed with its surface with the largest projected area in contact with the fixed platen (not a ball-type platen, but with an area larger than the maximum projected area of ​​each cleaning article) of the compression tester. A compressive force is applied at a rate of 200 mm / min. The compressive force at which the cleaning article breaks is used as the burst strength.

[0039] The detergent composition contained in the detergent article for textile products of the present invention (hereinafter referred to as the detergent composition of the present invention) is a solid detergent composition or a liquid detergent composition, and is preferably a solid detergent composition.

[0040] The cleaning composition of the present invention contains a surfactant as the component (a).

[0041] The surfactant of component (a) may, for example, be one or more selected from (a1) nonionic surfactants (hereinafter referred to as component (a1)), (a2) anionic surfactants (hereinafter referred to as component (a2)), (a3) ​​cationic surfactants (hereinafter referred to as component (a3)), and (a4) amphoteric surfactants (hereinafter referred to as component (a4)). From the viewpoint of cleansing properties and foaming properties, one or more selected from components (a1) and (a2) are preferred.

[0042] The nonionic surfactant of the component (a1) is preferably a nonionic surfactant (a11) containing an alkylene oxide group, wherein the average number of added moles of the alkylene oxide group is 1 to 30 (hereinafter referred to as the component (a11)).

[0043] The alkyleneoxy group of component (a11) is preferably one or more groups selected from alkyleneoxy groups having 2 to 4 carbon atoms. The alkyleneoxy group having 2 to 4 carbon atoms is preferably one or more groups selected from ethyleneoxy and propyleneoxy groups.

[0044] From the viewpoint of cleansing properties, the average number of added moles of alkylene oxide groups in component (a11) is 1 or more, preferably 6 or more, more preferably 10 or more, and 30 or less, preferably 25 or less, more preferably 20 or less.

[0045] The component (a11) is preferably a nonionic surfactant represented by the following general formula (a11).

[0046] R 11a (CO) m O-(A 11a O) n -R 12a (a11)

[0047] [Where R 11a is an aliphatic hydrocarbon group having 8 to 18 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. 11a The O group is an alkyleneoxy group having 2 or more and 4 or less carbon atoms, including an ethyleneoxy group. n is the average number of added moles, and is a number of 1 or more and 30 or less.]

[0048] In general formula (a11), from the viewpoint of detergency, R 11a The number of carbon atoms is 8 or more, preferably 10 or more, more preferably 12 or more, and is 18 or less, preferably 16 or less, more preferably 14 or less.

[0049] R 11a It is an aliphatic hydrocarbon group, preferably a group selected from an alkyl group and an alkenyl group.

[0050] In the general formula (a11), A 11a The O group is an alkyleneoxy group having 2 or more and 4 or less carbon atoms, including an ethyleneoxy group, preferably an alkyleneoxy group having 2 or more and 3 or less carbon atoms, including an ethyleneoxy group, and more preferably an ethyleneoxy group. 11a The O group may be an alkyleneoxy group including ethyleneoxy and other alkyleneoxy groups, such as propyleneoxy. Other alkyleneoxy groups are preferably propyleneoxy groups. 11a When the O group includes an ethyleneoxy group and a propyleneoxy group, the ethyleneoxy group and the propyleneoxy group may be bonded in a block type or may be bonded in a random type.

[0051] In the general formula (a11), n ​​is A 11aThe average number of moles of added O groups is 1 to 30. In general formula (a11), from the viewpoint of detergency, n is 1 or more, preferably 6 or more, more preferably 10 or more, and is 30 or less, preferably 25 or less, more preferably 20 or less.

[0052] Specific examples of the nonionic surfactant having no alkylene oxide group other than the component (a11) include one or more selected from sucrose fatty acid esters, glycerol fatty acid esters, sorbitan fatty acid esters, alkyl glycosides, and glycerol monoethers.

[0053] Examples of the anionic surfactant of component (a2) include alkylbenzenesulfonates, alkyl or alkenyl ether sulfates, alkyl or alkenyl sulfates, olefinsulfonates, alkanesulfonates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, α-sulfofatty acid salts, N-acylamino acids, mono- or diesters of phosphoric acid, and sulfosuccinates. Examples of the alkyl ether sulfate include polyoxyethylene alkyl ether sulfates.

[0054] The alkyl group 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.

[0055] Examples of the counter ions of the anionic groups of these anionic surfactants include alkali metal ions such as sodium ion and potassium ion; alkaline earth metal ions such as calcium ion and magnesium ion; ammonium ion; and alkanolamines having 1 to 3 alkanol groups with 2 or 3 carbon atoms (e.g., monoethanolamine, diethanolamine, triethanolamine, triisopropanolamine, etc.).

[0056] These surfactants can be used alone or in combination of two or more.

[0057] From the viewpoint of detergency, component (a2) is preferably one or more selected from alkylbenzenesulfonic acid, alkylsulfuric acid, polyoxyethylene alkyl ether sulfuric acid, α-sulfofatty acid ester, and salts thereof, and more preferably alkylbenzenesulfonic acid or a salt thereof.

[0058] The number of carbon atoms in the alkylbenzenesulfonic acid is preferably 8 or more, more preferably 12 or more, and preferably 18 or less, more preferably 14 or less.

[0059] Examples of the cationic surfactant of component (a3) ​​include alkyltrimethylammonium salts having an alkyl group with 8 to 22 carbon atoms, dialkyldimethylammonium salts having an alkyl group with 8 to 22 carbon atoms, alkyldimethylbenzylammonium salts having an alkyl group with 8 to 22 carbon atoms, and benzethonium chloride salts. Examples of the salt include halide salts and alkyl sulfate salts having 1 to 3 carbon atoms.

[0060] These surfactants can be used alone or in combination of two or more.

[0061] Examples of the amphoteric surfactant of component (a4) 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. Examples of the alkanoyl group in these are lauroyl or myristoyl. Examples of the alkyl group in these are lauryl or myristyl.

[0062] The cleaning composition of the present invention preferably contains component (a) in an amount of 5% by mass or more, more preferably 10% by mass or more, and 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 cleaning properties and stability.

[0063] When the cleaning composition of the present invention is a solid cleaning composition, from the viewpoint of cleaning properties and stability, the cleaning composition contains component (a) in an amount of preferably 5% by mass or more, more preferably 10% by mass or more, and even more preferably 20% by mass or more, and preferably 40% by mass or less, more preferably 30% by mass or less.

[0064] When the cleaning composition of the present invention is a liquid cleaning composition, from the viewpoint of cleaning properties and stability, the cleaning composition contains component (a) in an amount of preferably 20% by mass or more, more preferably 30% by mass or more, and even more preferably 40% 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.

[0065] In addition, when the cleaning composition of the present invention contains component (a2) as component (a), the definition regarding the mass of component (a2) refers to the value converted into sodium salt.

[0066] In addition, when the cleaning composition of the present invention contains component (a3) ​​as component (a), the definition regarding the mass of component (a3) ​​uses a value converted into chloride.

[0067] When the cleaning composition of the present invention contains component (a1), from the viewpoint of cleaning performance and stability, the content of component (a1) in the cleaning composition is preferably 2.5% by mass or more, more preferably 5% by mass or more, and even more preferably 10% by mass or more, and is preferably 40% by mass or less, more preferably 25% by mass or less, and even more preferably 15% by mass or less.

[0068] When the cleaning composition of the present invention contains component (a2), from the viewpoint of cleaning performance and stability, the content of component (a2) in the cleaning composition is preferably 2.5% by mass or more, more preferably 5% by mass or more, and even more preferably 10% by mass or more, and is preferably 40% by mass or less, more preferably 25% by mass or less, and even more preferably 15% by mass or less.

[0069] When the cleaning composition of the present invention contains components (a1) and (a2), from the viewpoint of further suppressing the decrease in the cleaning power of the cleaning article of the present invention having a specific aspect ratio, the mass ratio (a1) / (a2) of the content of component (a1) to the content of component (a2) is preferably 0.1 or more, more preferably 0.4 or more, further preferably 0.6 or more, further more preferably 1 or more, and is preferably 10 or less, more preferably 8 or less, further preferably 6 or less, further more preferably 4 or less, and further more preferably 2 or less.

[0070] When the cleaning composition of the present invention is a solid cleaning composition, it may contain one or more compounds selected from inorganic sulfates and inorganic halogen compounds as component (b). Component (b) may be a compound selected from sodium sulfate, magnesium sulfate, sodium chloride, and magnesium chloride. Component (b) may be a hydrate or an anhydrate.

[0071] When the cleaning composition of the present invention contains component (b), from the viewpoint of stability, the content of component (b) in the cleaning composition is preferably 2% by mass or more, more preferably 5% by mass or more, even more preferably 10% by mass or more, even more preferably 15% by mass or more, and is preferably 40% by mass or less, more preferably 30% by mass or less, even more preferably 25% by mass or less.

[0072] When the detergent composition of the present invention is a solid detergent composition, it may contain one or more alkaline agents selected from alkali metal carbonates, alkali metal hydrogencarbonates, alkali metal silicates, and tripolyphosphates as component (c).

[0073] Examples of the alkali metal carbonate include sodium carbonate and potassium carbonate, and sodium carbonate is preferred.

[0074] Examples of the alkali metal hydrogen carbonate include sodium hydrogen carbonate and potassium hydrogen carbonate.

[0075] Examples of the alkali metal silicate include sodium silicate and potassium silicate.

[0076] As the tripolyphosphate salt, an alkali metal salt of tripolyphosphate may be mentioned.

[0077] When the cleaning composition of the present invention contains component (c), from the viewpoint of cleaning performance and stability, the content of component (c) in the cleaning composition is preferably 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 25% by mass or more, and is preferably 80% by mass or less, more preferably 60% by mass or less, even more preferably 50% by mass or less, even more preferably 40% by mass or less, even more preferably 35% by mass or less.

[0078] 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 the component (d).

[0079] Zeolite is also known as a crystalline aluminosilicate. Specific examples of zeolite include crystalline aluminosilicates such as A-type, X-type, and P-type zeolites. The average primary particle size is preferably 0.1 μm or larger, more preferably 1 μm or larger, and preferably 10 μm or smaller, more preferably 5 μm or smaller. A suitable crystalline aluminosilicate is preferably zeolite A (e.g., "Toyobuilder," manufactured by Tosoh Corporation, with an oil absorption capacity of 40 mL / 100 g or greater according to JIS K 5101-13-2). In addition, P-type (for example, trade names "Doucil A24", "ZSEO64", etc., all manufactured by Crosfield, with an oil absorption capacity of 60 to 150 mL / 100 g), X-type (for example, trade name "Wessalith XD", manufactured by Degussa, with an oil absorption capacity of 80 to 100 mL / 100 g), and the mixed zeolite described in International Publication No. 98 / 42622 can also be cited as suitable examples.

[0080] The bentonite preferably has an ion exchange capacity of 50 to 100 meq / 100 g. Examples of the bentonite include one or more selected from (d1) smectite clays selected from alkali metal or alkaline earth metal montmorillonites, saponites, or laponites; (d2) illite; (d3) attapulgite; and (d4) kaolinite. Granulated bentonite can be used. For example, reference can be made to the granulated clay minerals described in Japanese Patent Application Laid-Open No. 2008-189719.

[0081] When the detergent composition of the present invention contains component (d), from the viewpoint of the softness and stability of the fiber product, the detergent composition preferably contains component (d) in an amount of 2% by mass or more, more preferably 5% by mass or more, further preferably 10% by mass or more, further more preferably 15% by mass or more, and preferably 50% by mass or less, more preferably 30% by mass or less, further preferably 25% by mass or less.

[0082] When the detergent composition of the present invention is a solid detergent composition, it may contain a polymer having a carboxylic acid group or a salt thereof and having a weight average molecular weight of 3,000 or more as the component (e).

[0083] The component (e) may, for example, be a polymer selected from polyacrylic acid or its salt, and a copolymer of acrylic acid and maleic acid or its salt (hereinafter referred to as the component (e1)).

[0084] Examples of the polyacrylic acid or a salt thereof include polyacrylic acid, sodium polyacrylate, potassium polyacrylate, and the like, preferably sodium polyacrylate and potassium polyacrylate.

[0085] Examples of the copolymer of acrylic acid and maleic acid or its salt include copolymers of acrylic acid and maleic acid, sodium salts of copolymers of acrylic acid and maleic acid, and potassium salts of copolymers of acrylic acid and maleic acid. Preferred examples include sodium salts of copolymers of acrylic acid and maleic acid, and potassium salts of copolymers of acrylic acid and maleic acid. The molar ratio of the copolymer of acrylic acid and maleic acid, calculated as the number of moles of acrylic acid / the number of moles of maleic acid, is preferably 1 / 99 or greater, more preferably 10 / 90 or greater, and preferably 99 / 1 or less, more preferably 90 / 10 or less.

[0086] As long as the effect of the present invention is not hindered, the (e1) component may also be a copolymer containing a monomer other than acrylic acid and maleic acid and copolymerizable with acrylic acid and / or maleic acid. Monomers other than acrylic acid and maleic acid and copolymerizable with acrylic acid and / or maleic acid include vinyl monomers, acrylic acid monomers, styrene monomers, and more specifically, methacrylic acid, methyl acrylate, ethyl acrylate, methyl methacrylate, styrene, and the like. The molar ratio of the monomer other than acrylic acid and maleic acid and copolymerizable with acrylic acid and / or maleic acid in the (e1) component is preferably 0 mol% or more, and preferably 5 mol% or less, more preferably 3 mol% or less, and further preferably 0 mol%. Therefore, the polyacrylic acid or its salt, and the copolymer of acrylic acid and maleic acid or its salt of the present invention may be a polymer or copolymer containing a monomer other than acrylic acid and maleic acid and copolymerizable with acrylic acid and / or maleic acid in an amount within a range of 0 mol% to 5 mol% of all constituent monomers.

[0087] The weight average molecular weight of the component (e) is 3,000 or more, preferably 3,500 or more, more preferably 4,000 or more, even more preferably 5,000 or more, even more preferably 6,000 or more, even more preferably 7,000 or more, even more preferably 8,000 or more, even more preferably 9,000 or more, even more preferably 10,000 or more, and is preferably 100,000 or less, more preferably 50,000 or less, even more preferably 10,000 or less.

[0088] The weight average molecular weight can be measured by the following method for measuring the weight average molecular weight.

[0089] <Method for measuring weight average molecular weight>

[0090] The weight average molecular weight of the component (e) can be measured by GPC (gel permeation chromatography) and the weight average molecular weight (Mw) can be determined based on conversion to a standard substance.

[0091] The measurement conditions of GPC are shown below.

[0092] Column: manufactured by Tosoh Corporation, trade name: TSK-GEL guard PWXL

[0093] Made by Tosoh Corporation, trade name: TSK-GEL G4000 PWXL

[0094] Made by Tosoh Corporation, trade name: TSK-GEL G2500 PWXL

[0095] Mobile phase: 0.1 mol / L potassium dihydrogen phosphate and 0.1 mol / L sodium dihydrogen phosphate in water / acetonitrile = 90 / 10 (volume ratio)

[0096] Detector: Differential refractive index detector

[0097] Column temperature: 40°C

[0098] Flow rate: 1.0 mL / min

[0099] Conversion standard substance: Polyacrylic acid [manufactured by American Standard Corporation]

[0100] Sample: Ion-exchanged water was added to an aqueous polymer solution containing 0.8 g of solid content to adjust the total liquid volume to 200 mL. 10 μL of the prepared solution was aliquoted and injected into the column.

[0101] When the cleaning composition of the present invention contains component (e), from the viewpoint of cleaning properties and stability, the content of component (e) in the cleaning composition is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, and even more preferably 2% by mass or more, and is preferably 20% by mass or less, more preferably 10% by mass or less, and even more preferably 7% by mass or less.

[0102] The cleaning composition of the present invention may contain a polyalkylene glycol having a weight average molecular weight of 100 to 100,000 as the component (f).

[0103] The component (f) may, for example, be one or more selected from polyethylene glycol and polypropylene glycol.

[0104] The weight average molecular weight of the component (f) is 100 or more, preferably 1000 or more, more preferably 5000 or more, and even more preferably 10000 or more, and is 100000 or less, preferably 50000 or less, and more preferably 20000 or less.

[0105] Here, the weight average molecular weight of the component (f) is a value determined by gel permeation chromatography using polystyrene as a standard substance.

[0106] When the cleaning composition of the present invention contains component (f), from the viewpoint of stability, the content of component (f) in the cleaning composition is preferably 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, and is preferably 15% by mass or less, more preferably 10% by mass or less, even more preferably 5% by mass or less.

[0107] When the cleaning composition of the present invention is a solid cleaning composition, the solid cleaning composition may be in a powdery, granular, or granular form. From the perspective of cleaning power against sebum dirt, the cleaning composition of the present invention is preferably a solid cleaning composition of one or more selected from the group consisting of a powdery, granular, and granular form.

[0108] The solid detergent composition can be produced by known methods. For example, spray drying, dry neutralization, dry granulation, dry blending, fluidized bed drying, thin film drying, extrusion granulation, tumbling granulation, stirring granulation, compaction granulation, surfactant loading, or a combination thereof can be used.

[0109] When the cleaning composition of the present invention is a powdered cleaning composition, the bulk density of the cleaning composition of the present invention varies depending on the production method. However, from the perspective of further suppressing a short-term decrease in cleaning power by entanglement of the cleaning article of the present invention with the fibers and easy disintegration by external force from the fiber product, the bulk density is preferably 0.2 g / cm 3 More than 0.3 g / cm 3 More than 0.35 g / cm 3 More than, and preferably 1g / cm 3 Below, more preferably 0.95g / cm 3 Below, more preferably 0.9g / cm 3 the following.

[0110] When the detergent composition of the present invention is a powder detergent composition, the average particle size of the detergent composition of the present invention is preferably 100 μm or more, more preferably 150 μm or more, and even more preferably 200 μm or more, and is preferably 800 μm or less, more preferably 750 μm or less, and even more preferably 700 μm or less.

[0111] When the cleaning composition of the present invention is a liquid cleaning composition, the cleaning composition of the present invention may contain an alkanolamine as the component (g).

[0112] The alkanolamine may, for example, be one or more compounds selected from the group consisting of monoethanolamine, diethanolamine, triethanolamine, N-methylmonoethanolamine, N-methyldiethanolamine, and N,N-dimethylmonoethanolamine.

[0113] When the cleaning composition of the present invention contains component (g), from the viewpoint of stability, the content of component (g) in the cleaning composition is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, and even more preferably 1% by mass or more, and is preferably 20% by mass or less, more preferably 15% by mass or less, and even more preferably 10% by mass or less.

[0114] When the cleaning composition of the present invention is a liquid cleaning composition, the cleaning composition of the present invention may contain a polyol as the component (h).

[0115] More specifically, component (h) may be a polyhydric alcohol having 2 to 12 carbon atoms, preferably 10 to 12 carbon atoms, more preferably 8 to 8 carbon atoms, and having a valence of 2 to 12, preferably 10 to 12, more preferably 8 to 12, or less. Specific examples of the compound include ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, dipropylene glycol, tripropylene glycol, and glycerin.

[0116] When the cleaning composition of the present invention contains component (h), from the viewpoint of stability, the content of component (h) in the cleaning composition is preferably 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, and is preferably 30% by mass or less, more preferably 20% by mass or less, even more preferably 15% by mass or less.

[0117] The cleaning composition of the present invention may contain water. Deionized water (sometimes also referred to as ion-exchanged water) or ion-exchanged water to which sodium hypochlorite has been added at a concentration of 1 mg / kg to 5 mg / kg may be used. Tap water may also be used.

[0118] When the cleaning composition of the present invention is a solid cleaning composition, from the viewpoint of stability, the cleaning composition preferably contains water in an amount of 0.01% by mass or more, more preferably 0.1% by mass or more, and even more preferably 1% by mass or more, and preferably 10% by mass or less, more preferably 5% by mass or less.

[0119] When the cleaning composition of the present invention is a liquid cleaning composition, the cleaning composition preferably contains 10% by mass or less, more preferably 5% by mass or less, of water.

[0120] The cleaning agent composition of the present invention may contain other components known in the field of laundry detergents, such as bleaching agents (perborates, bleach activators, etc.), recontamination preventives, reducing agents (sulfites, etc.), fluorescent whitening agents, foam inhibitors (silicones, etc.), fragrances, enzymes (cellulases, proteases, pectinases, lipases, glucanases, amylases, etc.), colorants, antibacterial agents, etc. as other components.

[0121] Regarding the cleaning agent article of the present invention having a specific aspect ratio, which is entangled with fibers and is easily disintegrated by an external force from a fiber product, thereby further suppressing the decrease in cleaning power in a short time, the pH value of the cleaning liquid obtained by diluting the fiber product with the cleaning agent article with water to a concentration of 0.2 g / L of the contained cleaning agent composition is preferably 8.0 or more, more preferably 9.0 or more, further preferably 10.0 or more, and preferably 13.0 or less, more preferably 12.0 or less, and further preferably 11.0 or less at 25°C.

[0122] The pH value is measured according to the pH value measurement method described below.

[0123] <pH value measurement method>

[0124] Connect a combined electrode for pH measurement (glass slide-in sleeve type manufactured by HORIBA) to a pH meter (pH / ion meter F-23 manufactured by HORIBA) and turn on the power. Use a saturated potassium chloride aqueous solution (3.33 mol / L) as the internal liquid of the pH electrode. Next, fill 100 mL beakers with a pH 4.01 standard solution (phthalate standard solution), a pH 6.86 (neutral phosphate standard solution), and a pH 9.18 standard solution (borate standard solution) respectively, and immerse them in a constant temperature bath at 25°C for 30 minutes. Immerse the pH measurement electrode in the thermostatically adjusted standard solution for 3 minutes and perform calibration operations in the order of pH 6.86 → pH 9.18 → pH 4.01. Adjust the sample to be measured to 25°C, immerse the electrode of the above pH meter in the sample, and measure the pH value after 1 minute.

[0125] The cleaning agent article of the present invention can be applied to fiber product uses, especially for cleaning fiber products using a washing machine.

[0126] The fiber that utilizes the cleaning agent article of the present invention to clean can be any one of hydrophobic fiber and hydrophilic fiber. As hydrophobic fiber, for example, can exemplify: protein fiber (milk protein casein fiber, protein copolymer fiber (Promix) etc.), polyamide fiber (nylon etc.), polyester fiber (polyester etc.), polyacrylonitrile fiber (acrylic acid etc.), polyvinyl alcohol fiber (vinylon etc.), polyvinyl chloride fiber (polyvinyl chloride etc.), polyvinylidene chloride fiber (vinylidene etc.), polyolefin fiber (polyethylene, polypropylene etc.), polyurethane fiber (polyurethane etc.), polyvinyl chloride / polyvinyl alcohol copolymer fiber (polyvinyl chloride alcohol fiber (polychlal) etc.), polyalkylene paraben fiber (benzoate etc.), polyvinyl fluoride fiber (polytetrafluoroethylene etc.), glass fiber, carbon fiber, alumina fiber, silicon carbide fiber, rock fiber (rock fiber), slag fiber (slag fiber), metal fiber (gold wire, silver wire, steel fiber) etc. Examples of hydrophilic fibers include: hair fibers (cotton, kapok, etc.), bast fibers (hemp, flax, ramie, hemp, jute, etc.), leaf vein fibers (Manila hemp, sisal, etc.), coconut fibers, rush, straw, animal hair fibers (wool, mohair, cashmere, camel hair, alpaca hair, llama hair, angora rabbit hair, etc.), silk fibers (domestic silk, wild silkworm silk), feathers, cellulose fibers (rayon, high wet modulus viscose (polynosic), cuprammonium silk, acetate, etc.), etc.

[0127] From the viewpoint of fiber processability, the fiber is preferably a fiber containing cotton fiber. From the viewpoint of fiber processability, the content of cotton fiber in the fiber is preferably 5% by mass or more, more preferably 10% by mass or more, further preferably 15% by mass or more, further preferably 20% by mass or more, further more preferably 40% by mass or more, further more preferably 60% by mass or more, further more preferably 80% by mass or more, and preferably 100% by mass or less, and can be 100% by mass.

[0128] In the present invention, fiber products refer to fabrics such as woven fabrics, knitted fabrics, and non-woven fabrics made of the above-mentioned hydrophobic fibers or hydrophilic fibers, and products such as underwear, T-shirts, shirts, overalls, slacks, hats, handkerchiefs, towels, knitted fabrics, socks, underwear, tights, etc. obtained using the same.

[0129] [How to wash fiber products]

[0130] The present invention provides a method for washing fiber products, comprising contacting the fiber product detergent of the present invention, the fiber product, and water.

[0131] The method for washing textile products of the present invention can appropriately apply the methods described in the textile product cleaning article of the present invention.

[0132] The method for washing fiber products of the present invention can be a method in which the fiber cleaning article of the present invention and water are placed in a cleaning tank for mixing to prepare a cleaning solution (hereinafter also referred to as the cleaning solution of the present invention), and then the fiber products to be cleaned are placed in the cleaning tank to wash the fiber products. However, from the perspective of enjoying the effects of the present invention, the following method is preferred: the fiber cleaning article of the present invention, water, and the fiber products are placed in the cleaning tank, the fiber cleaning article of the present invention and the fiber products are entangled, and an external force is applied to the fiber products and the cleaning article to dissolve the cleaning article in water while preparing the cleaning solution of the present invention and washing the fiber products at the same time.

[0133] In the method for washing fiber products of the present invention, regarding the amount of water when mixing the detergent article for fiber products of the present invention with water, from the viewpoint of cleaning performance and rinsing properties, the total amount of the detergent composition of the present invention contained in the detergent article for fiber products of the present invention is prepared to a concentration of preferably 0.1 g or more, more preferably 0.2 g or more, and even more preferably 0.3 g or more, and preferably 10 g or less, more preferably 5 g or less, and even more preferably 1.0 g or less per liter of water.

[0134] In the washing method of the present invention, from the viewpoint of cleaning performance, the water temperature is preferably 10°C or higher, more preferably 20°C or higher, and even more preferably 30°C or higher, and is preferably 100°C or lower, more preferably 80°C or lower, and even more preferably 60°C or lower.

[0135] The temperature of the cleaning solution of the present invention may be within the above range. The temperature of the water used in the washing method, such as the water used for rinsing, may also be within the above range.

[0136] From the viewpoint of cleaning performance, the pH value of the cleaning liquid of the present invention at 25°C is preferably 8.0 or higher, more preferably 9.0 or higher, and even more preferably 10.0 or higher, and is preferably 13.0 or lower, more preferably 12.0 or lower, and even more preferably 11.0 or lower.

[0137] The pH value was measured according to the pH measurement method described in the above-mentioned cleaning article.

[0138] In the method for washing fiber products of the present invention, from the viewpoint of cleanliness and economy, the bath ratio value represented by the ratio of the mass (kg) of the fiber product to the amount (liter) of the cleaning solution containing the detergent composition of the present invention and water, that is, the value of the amount (liter) of the cleaning solution of the present invention / the mass (kg) of the fiber product is preferably 8 or more, more preferably 10 or more, further preferably 12 or more, further more preferably 15 or more, and is preferably 45 or less, more preferably 40 or less, further preferably 30 or less, and further more preferably 20 or less.

[0139] In the method for washing fiber products of the present invention, the cleaning time for bringing the fiber detergent article of the present invention, the fiber product, and water into contact (i.e., the cleaning time for bringing the cleaning liquid of the present invention into contact with the fiber product) is preferably 1 minute or more, more preferably 3 minutes or more, and even more preferably 5 minutes or more from the viewpoint of cleaning performance, and is preferably 1 hour or less, more preferably 45 minutes or less, and even more preferably 30 minutes or less from the viewpoint of damage to clothing.

[0140] The fiber product washing method of the present invention is applicable to a method in which the fiber is transported by rollers or the like while being immersed in a liquid used for refining, or a rotary cleaning method. The rotary cleaning method refers to a cleaning method in which a fiber product that is not fixed to a rotating machine is rotated around a rotating axis together with a cleaning liquid. The rotary cleaning method can be implemented by a rotary washing machine. Therefore, in the washing method of the present invention, in terms of ultimately washing the fiber product more cleanly, it is preferred to use a washing machine, especially a rotary washing machine, to clean the fiber product. As a rotary washing machine, specifically, a drum washing machine, a pulsator washing machine or an agitator washing machine can be mentioned. These rotary washing machines can use commercially available washing machines for household use.

[0141] After cleaning the fabric, rinse and spin. A washing machine can be used for rinsing and spinning. The rinsing and spinning cycles can be repeated multiple times.

[0142] After rinsing and dehydration, the product can be dried. Drying can be either natural drying or heat drying. Drying can be performed multiple times.

[0143] The following are examples of embodiments of the present invention. In these embodiments, the matters described in the detergent article for textile products and the method for washing textile products of the present invention are appropriately applied.

[0144] <1>

[0145] A detergent article for fiber products, wherein the detergent article is formed by packaging a detergent composition containing 5% by mass to 80% by mass of (a) a surfactant (hereinafter referred to as component (a)) in a water-soluble film, wherein the major axis diameter of the maximum projected area of ​​the detergent article is 30 mm to 200 mm, the aspect ratio of the major axis diameter to the minor axis orthogonal to the major axis diameter (major axis diameter / minor axis diameter) is 5 or more, and the burst strength is 300 N or more.

[0146] <2>

[0147] like <1> The described detergent article for fiber products, wherein the detergent article for fiber products is composed of the above-mentioned detergent composition and the above-mentioned water-soluble film, and the above-mentioned detergent composition is packaged by the above-mentioned water-soluble film, the major axis diameter of the maximum projected area of ​​the above-mentioned detergent article is greater than 30 mm and less than 200 mm, the aspect ratio of the major axis diameter to the minor axis diameter orthogonal to the major axis diameter (major axis diameter / minor axis diameter) is greater than 5, and the burst strength is greater than 300N.

[0148] <3>

[0149] like <1> or <2> The detergent article for fiber products described above, wherein the detergent composition contains component (a) in an amount of preferably 5% by mass or more, more preferably 10% by mass or more, and 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.

[0150] <4>

[0151] like <1> to <3> The detergent article for textile products according to any one of the above, wherein the detergent composition is a solid detergent composition.

[0152] <5>

[0153] like <4> The described detergent article for fiber products, wherein the above-mentioned detergent composition is a solid detergent composition, and the detergent composition contains component (a) in an amount of preferably 5% by mass or more, more preferably 10% by mass or more, and further preferably 20% by mass or more, and preferably 40% by mass or less, more preferably 30% by mass or less.

[0154] <6>

[0155] like <1> to <3> The detergent article for fiber products according to any one of the above items, wherein the detergent composition is a liquid detergent composition, and the detergent composition contains component (a) in an amount of preferably 20% by mass or more, more preferably 30% by mass or more, and further preferably 40% by mass or more, and preferably 80% by mass or less, more preferably 70% by mass or less, and further preferably 60% by mass or less.

[0156] <7>

[0157] like <1> to <6> The detergent article for fiber products according to any one of the above, wherein the component (a) is one or more selected from the group consisting of (a1) a nonionic surfactant (hereinafter referred to as component (a1)) and (a2) anionic surfactant (hereinafter referred to as component (a2)), and in the detergent composition, the mass ratio (a1) / (a2) of the content of component (a1) to the content of component (a2) is 0.1 or more and 10 or less.

[0158] <8>

[0159] like <7> The described detergent article for fiber products, wherein the component (a) comprises the component (a1) and the component (a2), and the mass ratio (a1) / (a2) is preferably 0.1 or more, more preferably 0.4 or more, further preferably 0.6 or more, further more preferably 1 or more, and is preferably 10 or less, more preferably 8 or less, further preferably 6 or less, further more preferably 4 or less, further more preferably 2 or less.

[0160] <9>

[0161] like <1> to <8> In the detergent article for textile products according to any one of the above, the thickness of the water-soluble film is preferably 70 μm or more, more preferably 100 μm or more, and preferably 200 μm or less, more preferably 140 μm or less.

[0162] <10>

[0163] like <1> to <9> The detergent article for fiber products described in any one of the above items, wherein the aspect ratio (major axis diameter / minor axis diameter) is 5 or more, preferably 6 or more, more preferably 7 or more, and further preferably 8 or more, and is preferably 20 or less, more preferably 16 or less, further preferably 13 or less, and further more preferably 10 or less.

[0164] <11>

[0165] like <1> to <10> The detergent article for fiber products according to any one of the above items, wherein the major axis diameter of the maximum projected area of ​​the detergent article for fiber products is 30 mm or more, preferably 50 mm or more, more preferably 80 mm or more, and is 200 mm or less, preferably 160 mm or less, more preferably 120 mm or less.

[0166] <12>

[0167] like <1> to <11> The detergent article for fiber products according to any one of the above items, wherein the minor axis diameter of the maximum projected area of ​​the detergent article for fiber products is preferably 5 mm or more, more preferably 10 mm or more, further preferably 12 mm or more, further more preferably 14 mm or more, and is preferably 25 mm or less, more preferably 23 mm or less, further preferably 20 mm or less.

[0168] <13>

[0169] like <1> to <12> The detergent article for textile products according to any one of the above, wherein the detergent article for textile products has a bursting strength of 300 N or more, preferably 350 N or more, and more preferably 400 N or more.

[0170] <14>

[0171] like <1> to <13> The cleaning article for textile products according to any one of the above, wherein the pH value of a cleaning solution prepared by diluting the cleaning article for textile products with water to contain a cleaning composition at a concentration of 0.2 g / L at 25°C is preferably 8.0 or higher, more preferably 9.0 or higher, and even more preferably 10.0 or higher, and is preferably 13.0 or lower, more preferably 12.0 or lower, and even more preferably 11.0 or lower.

[0172] <15>

[0173] like <1> to <14> The detergent article for textile products according to any one of the above, wherein the detergent article for textile products is for cleaning textile products using a washing machine.

[0174] <16>

[0175] A method for washing fiber products, wherein <1> to <15> The textile cleaning agent according to any one of the above, the textile product, and water.

[0176] <17>

[0177] like <16> The described method for washing fiber products comprises using a washing machine, putting the above-mentioned detergent, fiber products, and water into a washing tub, and cleaning the fiber products.

[0178] [Example]

[0179] The components used in the cleaning compositions of Examples and Comparative Examples are as follows. The blending compositions of the components in the table are net contents of the components.

[0180] <(a)Component>

[0181] C12EO10: polyoxyethylene lauryl ether (the average number of added moles of oxyethylene groups is 10 mol), Emulgen 110, manufactured by Kao Corporation, component (a1)

[0182] LAS: Sodium laurylbenzenesulfonate, Neopelex FS, manufactured by Kao Corporation, ingredient (a2)

[0183] <(b) Components>

[0184] Sodium sulfate, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.

[0185] Sodium chloride, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.

[0186] <(c) Component>

[0187] Sodium carbonate, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.

[0188] <(d) Component>

[0189] Zeolite: Synthetic zeolite, A-4, powder, 75 μm (200 mesh), manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.

[0190] <(e) Ingredients>

[0191] Sodium polyacrylate: mass average molecular weight 10,000, Poiz 536, manufactured by Kao Corporation

[0192] <(f) ingredient>

[0193] Polyethylene glycol: Mass average molecular weight 13000, PEG-13000, manufactured by Mitsui Chemicals

[0194] <Preparation of Cleaning Composition>

[0195] Components (b), (c), (e), and (f) are mixed to prepare a slurry, and spray-dried to obtain spray-dried particles. After adding C12EO10 of component (a) to the spray-dried particles, dry neutralization is performed using LAS of component (a). Finally, the mixture is put into a high-speed mixer (manufactured by Fukae Industry Co., Ltd.), and the remaining post-blending component, component (d), is dry-mixed to obtain a bulk density of 0.70 to 0.90 g / cm 3The composition of the solid detergent composition is shown in Table 1.

[0196] [Table 1]

[0197]

[0198] <Creating Cleaning Items>

[0199] In each embodiment and comparative example, two pieces of 76 μm water-soluble film (M8685, manufactured by Kuraray) cut into a preset rectangular size were overlapped, and a heat sealer (manufactured by Fuji Impulse) was used. The sealing condition of the heat sealer was set to 8, and the three sides of the water-soluble film were welded from the edge of each side by a width of 2 mm to make a bag with only one side open. In each embodiment and comparative example, 15 g of the detergent composition in Table 1 was loaded into the bag. Thereafter, the opening of the bag was welded and sealed by a heat sealer to obtain cylindrical detergent articles in which the detergent composition was enclosed in the water-soluble film. The maximum projected area of ​​each detergent article obtained was rectangular, and the major axis diameter of the maximum projected area and the aspect ratio of the major axis diameter to the minor axis diameter orthogonal to the major axis diameter (major axis diameter / minor axis diameter) were as shown in Table 2. In addition, the total area of ​​the water-soluble film was 48 cm 2 In the measurement of the maximum projected area, the area of ​​the sealing portion of the water-soluble film is included in the maximum projected area.

[0200] The total area of ​​the water-soluble film in contact with the detergent composition was calculated as twice the product of the length of the long axis of the detergent article excluding the sealing portion (4 mm) and the length of the short axis of the detergent article excluding the sealing portion (4 mm). In the order of Examples 1 to 5, the total area was 30.4 cm, ... 2 、34.2cm 2 、35.6cm 2 、37.1cm 2 、38.6cm 2 .

[0201] <Determination of Bursting Strength>

[0202] The bursting strength of each of the prepared cleaning products listed in Table 2 was measured. Using a compression tester (AUTOGRAPH AG-X, manufactured by Shimadzu Science Co., Ltd.), the test environment was room temperature (20°C) and a relative humidity of approximately 50%. Each cleaning product was placed with its surface with the largest projected area in contact with the fixed pressure plate (not a ball-type plate, but with an area larger than the maximum projected area of ​​each cleaning product) of the compression tester. A compressive force of 300 N was applied at a rate of 200 mm / min for evaluation. The results showed that none of the cleaning products in the Examples and Comparative Examples broke under a compressive force of 300 N, indicating a bursting strength of 300 N or greater.

[0203] <Cleanliness Evaluation>

[0204] Preparation of model sebum dirt

[0205] Model sebum soil having the following composition was prepared and used to prepare an artificially soiled cloth containing the model sebum soil.

[0206] Model sebum dirt composition:

[0207] 0.44% by mass of lauric acid, 3.15% by mass of myristic acid, 2.35% by mass of pentadecanoic acid, 6.31% by mass of palmitic acid, 0.44% by mass of margaric acid, 1.6% by mass of stearic acid, 7.91% by mass of oleic acid, 13.33% by mass of triolein, 2.22% by mass of n-hexadecyl palmitate, 6.66% by mass of squalene, and the remainder being water (total 100% by mass)

[0208] Production of artificially contaminated cloth

[0209] The artificial soiled cloth used was prepared by gravure coating 100 mg of the model sebum soil having the above composition on a 6 cm×6 cm wide cotton / polyester blended cloth (cotton / polyester ratio = 35 / 65, purchased from Koto Shoten) using a gravure coating method.

[0210] Cleaning methods

[0211] Four artificially soiled fabrics were sewn onto the chest of a cotton T-shirt (GUNZE Co., Ltd.). A vertical washing machine (Panasonic Co., Ltd., NA-F70PB1) was used. Each detergent was placed at the bottom of the washing tub, followed by a cotton T-shirt (GUNZE Co., Ltd.) to a total weight of 2 kg.

[0212] In each of the Examples and Comparative Examples, water was added to the washing tub to achieve a concentration of 0.5 g / L of the detergent composition contained in the detergent article. Washing was performed for 9 minutes, followed by one rinse and a 7-minute spin cycle. The temperature of the water used for washing and rinsing was 20°C.

[0213] Furthermore, each cleaning article was diluted with water to obtain a cleaning solution containing a cleaning composition at a concentration of 0.2 g / L. The pH value of the cleaning solution at 25° C. was 10.2 in all the Examples and Comparative Examples.

[0214] In addition, instead of each detergent article, the detergent composition of Table 1 not packaged in a water-soluble film was placed in the washing tub and the same cleaning method as above was performed. This was used as a reference example.

[0215] Cleanliness evaluation

[0216] Four artificially soiled cloths sewn onto cotton T-shirts were removed, and the cleaning rates were measured by the following method to determine the average value of the four cloths.

[0217] The reflectance at 550 nm of the original cloth before contamination and the artificially contaminated cloth before and after cleaning was measured using a spectrocolorimeter (SE-2000, manufactured by Nippon Denshoku Co., Ltd.). The cleaning rate (%) was determined by the following formula and the average value of the four pieces was calculated.

[0218] Cleaning rate (%) = 100 × [(reflectivity after cleaning - reflectivity before cleaning) / (reflectivity of original cloth - reflectivity before cleaning)]

[0219] The calculated cleaning rates for each Example and Comparative Example were compared to the cleaning rate (%) of the baseline example, using a detergent composition not packaged in a water-soluble film, with the cleaning rate of the baseline example (using a detergent composition not packaged in a water-soluble film) set as 100%. The results are shown in Table 2. A higher relative cleaning rate indicates that even when the detergent composition is packaged in a water-soluble film, a decrease in cleaning power is suppressed.

[0220] [Table 2]

[0221]

Claims

1. A detergent article for fiber products, wherein The detergent article for fiber products is formed by packaging a detergent composition containing 5% by mass or more and 80% by mass or less of a (a) surfactant (hereinafter referred to as component (a)) in a water-soluble film, wherein the major axis diameter of the maximum projected area of ​​the detergent article is 30 mm or more and 200 mm or less, the aspect ratio of the major axis diameter to the minor axis diameter orthogonal to the major axis diameter is major axis diameter / minor axis diameter of 5 or more, and the burst strength is 300 N or more.

2. The detergent article for fiber products according to claim 1, wherein The water-soluble film has a thickness of 70 μm to 200 μm.

3. The detergent article for fiber products according to claim 1 or 2, wherein The aspect ratio is 5 or more and 20 or less, as long axis diameter / short axis diameter.

4. The detergent article for fiber products according to any one of claims 1 to 3, wherein The detergent composition is a solid detergent composition.

5. The detergent article for fiber products according to any one of claims 1 to 4, wherein The fiber product cleaning article is diluted with water so that the concentration of the cleaning composition contained therein is 0.2 g / L and the pH value of the cleaning solution at 25° C. is 9.0 or higher.

6. The detergent article for fiber products according to any one of claims 1 to 5, wherein Component (a) is one or more selected from a nonionic surfactant (a1) hereinafter referred to as component (a1) and an anionic surfactant (a2) hereinafter referred to as component (a2), and in the detergent composition, the mass ratio (a1) / (a2) of the content of component (a1) to the content of component (a2) is 0.1 or more and 10 or less.

7. The detergent article for fiber products according to any one of claims 1 to 6, wherein The fiber product cleaning agent is used for cleaning fiber products using a washing machine.

8. A method for washing fiber products, wherein: The method for washing a fiber product comprises bringing the fiber product cleaning agent according to any one of claims 1 to 7 into contact with the fiber product and water.

9. The method for washing fiber products according to claim 8, wherein: Using a washing machine, the detergent article, fiber products, and water are put into a washing tub for cleaning.

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