Detergent product

Abstract

To provide a detergent product that comprises a detergent article and offers excellent solubility of the detergent article and excellent storage stability and easiness to take out of the detergent article obtained by packing a detergent composition by a water-soluble film.SOLUTION: A detergent product is provided, comprising: a detergent article obtained by packing a detergent composition by a water-soluble film; and an outer container that houses the detergent article. The outer container comprises: an opening through which the detergent article can be taken out; and an upper space portion a and a lower space portion b which come in contact with the detergent article housed in the outer container and is partitioned by a horizontal plane nearest to the opening. A ratio, (a) / (b), of a volume (a) of the space portion a to the volume (b) of the space portion b is 1 / 9 to 9 / 1, a proportion, (c1) / (b), of the volume (b) of the space portion b to a volume (c1) of the detergent article housed in the space portion b is 20% or more and less than 90%, and a proportion, (d) / (c2), of a volume (d) of the detergent composition to the volume (c2) of the detergent article is 50% to 100%.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a cleaning agent product including a cleaning agent article comprising a cleaning agent composition packaged in a water-soluble film, and an outer container for housing the cleaning agent article. [Background technology]

[0002] In recent years, with an increasing preference for convenience among consumers, there has been a demand for cleaner articles that are easier to use. From the viewpoint of improving the usability of a cleaner composition, for example, a cleaner article in which the cleaner composition is packaged in a water-soluble film has been proposed.

[0003] Patent Document 1 discloses a detergent composition pack obtained by packing a powder detergent composition containing (A) 60% by mass or more of a surfactant having a solid form at 25°C, (B) 5% by mass or less of a surfactant having a liquid or paste form at 25°C, and (C) less than 30% by mass of a water-soluble salt in a water-soluble pouch. Patent Document 2 discloses a container system having a closable container including at least one pouch within an internal space of the container, the pouch including a water-soluble film including a polyvinyl alcohol (PVOH) resin blend, as well as a fragrance and an organic solvent, and including a household care composition at least partially enclosed within a compartment by the water-soluble film. Patent Document 3 discloses a detergent system contained in a water-soluble film packaging having (a) a water-soluble film packaging, (b) a detergent system containing a film-deteriorating component, and (c) a water-soluble barrier coating, where the water-soluble barrier coating is disposed around the film-deteriorating component to prevent deterioration of the water-soluble film packaging by the film-deteriorating component. Patent Document 4 discloses a sheet-form laundry product comprising a thin layer 1 of a laundry detergent composition containing a specific nonionic surfactant in a specific ratio, and a substrate disposed on both sides of the thin layer as a means for maintaining the thin layer. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2021-178940 [Patent Document 2] Special Publication No. 2005-525457 [Patent Document 3] Special Publication No. 6-501276 [Patent Document 4] Japanese Patent Application Publication No. 11-124600 Summary of the Invention [Problem to be solved by the invention]

[0005] In a cleaning article in which a solid cleaning composition is packaged in a water-soluble film, the cleaning composition may become lumpy when it absorbs moisture, which may reduce the solubility of the cleaning article and deteriorate the appearance of the cleaning article. In addition, even in the case of a water-soluble film, the appearance of the cleaning article may deteriorate due to curvature, discoloration, etc., caused by moisture absorption. The present invention provides a detergent product comprising a detergent article comprising a detergent composition packaged in a water-soluble film and an outer container for housing the detergent article, the detergent product having excellent solubility, storage stability and ease of removal of the detergent article. [Means for solving the problem]

[0006] The present invention provides a cleaning agent article comprising a cleaning agent composition packaged in a water-soluble film and an outer container for housing the cleaning agent article, The outer container has an opening formed at an upper end thereof through which the stored cleaning agent article can be removed, and an upper space portion a and a lower space portion b that contact the cleaning agent article stored in the outer container and are partitioned by a horizontal plane closest to the opening, a ratio (a) / (b) of the volume (a) of the space (a) to the volume (b) of the space (b) is 1 / 9 or more and 9 / 1 or less; a ratio (c1) / (b) of the volume (c1) of the cleaning article accommodated in the space b to the volume (b) of the space b is 20% or more and less than 90%; The cleaning agent product has a ratio (d) / (c2) of the volume (d) of the cleaning agent composition to the volume (c2) of the cleaning agent article of 50% or more and 100% or less. Effect of the Invention

[0007] The present invention provides a detergent product comprising a detergent article comprising a detergent composition packaged in a water-soluble film and an outer container for housing the detergent article, the detergent product having excellent solubility, storage stability and ease of removal of the detergent article. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic diagram of a cleaning product according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The cleaning agent product of the present invention is presumably able to achieve both prevention of deterioration of the cleaning agent article and the cleaning agent composition contained in the cleaning agent article due to moisture absorption and ease of removal of the cleaning agent article by providing a specified space a above the space b that contains the cleaning agent article in an outer container that contains a cleaning agent article in which a cleaning agent composition is packaged in a water-soluble film. In addition, by adjusting the filling rate of the cleaning agent articles contained in the space b, moisture absorption by the air flowing between the cleaning agent articles is reduced, and friction between the cleaning agent articles is also reduced, which is presumably why it is possible to simultaneously suppress deterioration of the cleaning agent articles and the cleaning agent composition contained in the cleaning agent articles due to moisture absorption, and to facilitate removal of the cleaning agent articles. Furthermore, it is presumed that by setting the filling rate of the detergent composition filled in the water-soluble film within a specified range, the rigidity of the detergent article is improved, and the ease of removal and usability of the detergent article are improved. The detergent product of the present invention is not limited in any way to the above-mentioned mechanism of action.

[0010] [Cleaning products] As shown in FIG. 1, a cleaning product 1 according to an embodiment of the present invention includes a cleaning article 2 in which a cleaning composition (not shown) is packaged in a water-soluble film, and an outer container 3 in which the cleaning article 2 is contained. The cleaning agent product 1 of the present invention may be a cleaning agent product 1 comprising an outer container 3 and a plurality of cleaning agent articles 2 each comprising a cleaning agent composition packaged in a water-soluble film. The detergent product 1 of the present invention may be a laundry detergent product 1 comprising an outer container 3 and a plurality of detergent articles 2 each comprising a detergent composition packaged in a water-soluble film.

[0011] The outer container 3 is a cylindrical container with a bottom and an opening 3a at the top. A lid (not shown) is provided on the opening 3a. This lid may be provided removably on the outer container 3, or may be provided integrally with the outer container 3. The opening 3a of the outer container 3 can also be closed with a fastener that engages by the elasticity of a resin provided on the outer container 3. Specific embodiments of the outer container 3 include a box-shaped container and a plastic bag with a fastener.

[0012] The outer container 3 contacts the cleaning agent article 2 contained in the outer container 3 and has an upper space a and a lower space b separated by a horizontal plane 4 closest to the opening 3a. Note that this aqueous surface 4 is an imaginary surface shown for the sake of convenience of explanation, and in reality, a single space is formed in the outer container 3 by combining the space a and the space b. The cleaning agent article 2 is contained in the space b. The horizontal plane 4 may be a plane parallel to the opening surface of the opening 3a. For example, when the cleaning agent article 2 is stored along the depth direction of the outer container 3, the space a and the space b are separated by a horizontal plane 4 that is away from the bottom of the outer container 3 by the length of the major axis diameter of the maximum projected area of ​​the cleaning agent article 2. Furthermore, when the cleaning agent article 2 is stored along the bottom surface of the outer container 3, the space a and the space b are separated by a horizontal plane 4 that contacts the upper end of the cleaning agent article stored closest to the opening 3a.

[0013] In the outer container 3, the ratio (a) / (b) of the volume (a) of the space a to the volume (b) of the space b is, from the viewpoint of storage stability, 1 / 9 or more, preferably 1 / 7 or more, more preferably 1 / 5 or more, even more preferably 2 / 8 or more, still more preferably 1 / 3 or more, and from the viewpoint of ease of removal of the cleaning agent article 2, 9 / 1 or less, preferably 7 / 1 or less, more preferably 8 / 2 or less, even more preferably 7 / 3 or less, still more preferably 1 or less. The volumes of the spaces a and b can be calculated from the dimensions of the outer container 3. If the volumes of the spaces a and b cannot be calculated from the dimensions of the outer container 3, they can be calculated from the volume of ethanol when the spaces a and b are filled with ethanol at 20°C.

[0014] The cleaning agent article 2 is accommodated in the space b. The cleaning agent article 2 is accommodated in the outer container 3, for example, such that the major axis of the maximum projected area of ​​the cleaning agent article 2 is parallel to the depth direction of the outer container 3, or such that the major axis of the maximum projected area of ​​the cleaning agent article 2 is parallel to the bottom surface of the outer container 3. From the viewpoints of ease of removal of the cleaning agent article 2 and storage stability of the cleaning agent article 2 and the cleaning composition, the cleaning agent article 2 is preferably accommodated such that the major axis of the maximum projected area of ​​the cleaning agent article 2 is aligned along the depth direction of the outer container 3. One or more, or even a plurality of, cleaning agent articles 2 are accommodated in the space b. The ratio (c1) / (b) of the volume (c1) of the detergent article 2 contained in the space b to the volume (b) of the space b is 20% or more, preferably 30% or more, more preferably 40% or more, and even more preferably 50% or more, from the viewpoint of the solubility or storage stability of the detergent article 2, and is less than 90%, preferably 80% or less, and more preferably 70% or less, from the viewpoint of ease of removal of the detergent article 2. The volume (c1) of the cleaning agent article 2 is the total volume of the multiple cleaning agent articles 2 housed in the space b. The volume (c1) of the detergent article 2 is calculated based on the difference between the volume of ethanol when the outer container 3 is filled with ethanol at 20°C without the detergent article 2 in it, and the volume of ethanol when the outer container 3 is filled with ethanol at 20°C with the detergent article 2 in it.

[0015] The cleaning agent article 2 is formed by packaging a cleaning agent composition in a water-soluble film. The cleaning agent article 2 includes a cleaning agent composition and a water-soluble film that packages the cleaning agent composition. The cleaning agent composition and the water-soluble film will be described in detail later.

[0016] The detergent article 2 has, for example, a major axis diameter of the maximum projected area of ​​30 mm or more and 200 mm or less, an aspect ratio between the major axis diameter and the minor axis diameter perpendicular to the major axis diameter (major axis diameter / minor axis diameter) of 5 or more, and a burst strength of 300 N or more.

[0017] The aspect ratio (major axis diameter / minor axis diameter) of the major axis diameter of the maximum projected area of ​​the detergent article 2 to the minor axis diameter perpendicular to the major axis diameter is preferably 5 or more, more preferably 6 or more, and even more preferably 8 or more, from the viewpoint of the solubility of the detergent article 2, and is preferably 20 or less, more preferably 16 or less, and even more preferably 10 or less, from the viewpoints of ease of use and storage. From the viewpoint of ease of use, the major axis diameter of the maximum projected area of ​​the detergent article 2 is preferably 30 mm or more, more preferably 50 mm or more, even more preferably 80 mm or more, and preferably 200 mm or less, more preferably 160 mm or less, even more preferably 120 mm or less. From the viewpoint of ease of use, the minor axis diameter of the maximum projected area of ​​the detergent article 2 is preferably 5 mm or more, more preferably 8 mm or more, even more preferably 11 mm or more, still more preferably 14 mm or more, and preferably 25 mm or less, more preferably 23 mm or less, and even more preferably 20 mm or less.

[0018] In the present invention, the maximum projected area is the area of ​​the projection that has the maximum horizontal projected area when the cleaning article 2 is projected horizontally from all sides. "Projection" is synonymous with "projection" used in mathematics, that is, it means projecting a parallel light beam horizontally onto an object and projecting its shadow onto a flat surface. In the present invention, the method for measuring the major axis diameter and minor axis diameter of the maximum projected area of ​​the detergent article 2 is as follows: if the shape of the maximum projected area of ​​the detergent article 2 is elliptical, the major axis diameter and minor axis diameter are measured as they are. If the shape of the maximum projected area of ​​the detergent article 2 is rectangular (length of vertical axis > length of 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. If the shape of the maximum projected area of ​​the detergent article 2 is irregular, the longest part is measured as the major axis diameter, and the longest part of the line (axis) perpendicular to the major axis diameter is measured as the minor axis diameter.

[0019] The detergent article 2 is, for example, a space formed by stacking a pair of water-soluble films and laminating their peripheral portions, in which a detergent composition is accommodated. In this specification, the volume of the space capable of accommodating the detergent composition, i.e., the volume of the space formed by the water-soluble films, is referred to as the volume (c2) of the detergent article 2. The ratio (d) / (c2) of the volume (d) of the detergent composition to the volume (c2) of the detergent article 2 is 50% or more, preferably 60% or more, more preferably 70% or more, and even more preferably 80% or more, from the viewpoint of ease of removal of the detergent article 2, and is 100% or less, preferably less than 100%, and more preferably 95% or less, from the viewpoint of the solubility of the detergent article. The ratio (d) / (c2) of the volume (d) of the detergent composition to the volume (c2) of the detergent article 2 can be determined by the following method. First, ethanol at 20°C is placed in a measuring cylinder, and the volume of each detergent article 2 is calculated from the increase in volume when detergent article 2 is placed therein. The volume of the water-soluble film constituting detergent article 2 is calculated in the same manner, and the volume (c2) of detergent article 2 is calculated based on the difference between the volume of detergent article 2 and the volume of the water-soluble film. The detergent composition of detergent article 2 is ground in a mortar and then packed into a measuring cylinder and pressed with a spatula to measure the volume (d) of the detergent composition. From the calculated volume (d) of the detergent composition and the volume (c2) of detergent article 2, the ratio (d) / (c2) of the volume (d) of the detergent composition to the volume (c2) of detergent article 2 is calculated.

[0020] From the viewpoint of storage stability, the thickness d1 of the water-soluble film is preferably 10 μm or more, more preferably 30 μm or more, even more preferably 50 μm or more, and even more preferably 60 μm or more, and from the viewpoint of storage stability, it is preferably 250 μm or less, more preferably 200 μm or less, even more preferably 150 μm or less, and even more preferably 100 μm or less. The thickness d1 of the water-soluble film is determined by measuring the thickness of the water-soluble film at three random locations with a caliper and averaging the measurements.

[0021] The outer container 3 is formed of a synthetic resin, for example, polyethylene terephthalate (PET), linear low density polyethylene (LLDPE), or oriented polypropylene (OPP). From the viewpoint of storage stability, the outer container 3 preferably has an aluminum vapor deposition layer. From the viewpoint of storage stability, the thickness d2 of the outer container 3 is preferably 10 μm or more, more preferably 30 μm or more, even more preferably 50 μm or more, still more preferably 70 μm or more, and from the viewpoint of storage stability, preferably 1000 μm or less, more preferably 700 μm or less, still more preferably 500 μm or less, still more preferably 300 μm or less. The thickness d2 of the outer container 3 is determined by measuring the thickness of the side of the outer container 3 at three random locations with a caliper and averaging the measurements.

[0022] From the viewpoint of storage stability, the outer container 3 preferably has an aluminum vapor deposition layer (not shown). The aluminum vapor deposition layer may be formed, for example, on one or both of the outer surface and the inner surface of the outer container 3, and is preferably formed on the inner surface of the outer container 3. From the viewpoint of storage stability, the aluminum vapor deposition layer is preferably 1 μm or more, more preferably 5 μm or more, even more preferably 10 μm or more, and preferably 100 μm or less, more preferably 50 μm or less, even more preferably 30 μm or less.

[0023] From the viewpoint of storage stability, the ratio (d1) / (d2) of the thickness d1 of the water-soluble film to the thickness d2 of the outer container 3 is preferably 0.1 or more, more preferably 0.3 or more, even more preferably 0.5 or more, and from the viewpoint of storage stability, it is preferably 3.0 or less, more preferably 2.5 or less, even more preferably 2.0 or less, and even more preferably 1.5 or less.

[0024] [Cleaning products] The cleaning article of the present invention comprises a cleaning composition and a water-soluble film that packages the cleaning composition. The cleaning composition is not particularly limited, but examples thereof include a composition containing (a) a surfactant (hereinafter referred to as component (a)) and (b) an alkaline agent (hereinafter referred to as component (b)).

[0025] <Component (a)> The component (a) is a surfactant, and examples of the component (a) include one or more surfactants selected from nonionic surfactants, anionic surfactants, cationic surfactants, and amphoteric surfactants.

[0026] From the viewpoint of cleaning power, the nonionic surfactant of component (a) can be one or more selected from polyoxyalkylene alkyl or alkenyl ethers, alkyl (poly)glycosides (glycoside-type nonionic surfactants), sorbitan-based nonionic surfactants, compounds in which an alkylene oxide is added between the ester bonds of a long-chain fatty acid alkyl ester, fatty acid monoglycerides, and sucrose fatty acid esters.

[0027] The nonionic surfactant of the component (a) is preferably (a1) a nonionic surfactant containing alkyleneoxy groups and having an average added mole number of alkyleneoxy groups of 1 or more and 30 or less [hereinafter referred to as component (a1)]. The alkyleneoxy group of the component (a1) is preferably one or more groups selected from alkyleneoxy groups having from 2 to 4 carbon atoms. The alkyleneoxy group having from 2 to 4 carbon atoms is preferably one or more groups selected from an ethyleneoxy group and a propyleneoxy group. The average number of moles of alkyleneoxy groups added in the component (a1) is, from the viewpoint of detergency, 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.

[0028] The component (a1) is preferably a nonionic surfactant represented by the following general formula (a1). R 1a (CO) m O-(A 1a O) n -R 2a (a1) [In the formula, R 1a is an aliphatic hydrocarbon group having 8 to 18 carbon atoms, R 2a is a hydrogen atom or a methyl group. CO is a carbonyl group, and m is the number 0 or 1. A 1a The O group is an alkyleneoxy group containing an ethyleneoxy group and having 2 to 4 carbon atoms. n is the average number of moles added and is a number of 1 to 30.

[0029] In general formula (a1), R 1a From the viewpoint of detergency, 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 1a is an aliphatic hydrocarbon group, preferably a group selected from an alkyl group and an alkenyl group.

[0030] In general formula (a1), A 1aThe O group is an alkyleneoxy group having 2 to 4 carbon atoms and containing an ethyleneoxy group, preferably an alkyleneoxy group having 2 to 3 carbon atoms and containing an ethyleneoxy group, and more preferably an ethyleneoxy group. 1a The O group may be an alkyleneoxy group, including an ethyleneoxy group and another alkyleneoxy group, such as a propyleneoxy group. The other alkyleneoxy group is preferably a propyleneoxy group. 1a When the O group contains an ethyleneoxy group and a propyleneoxy group, the ethyleneoxy group and the propyleneoxy group may be bonded in a block type or a random type.

[0031] In the general formula (a1), n ​​is A 1a It is the average number of moles of O groups added, and is a number of 1 or more and 30 or less. In general formula (a1), n ​​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, from the viewpoint of cleaning properties. In the general formula (a1), m is preferably 0 from the viewpoint of cleaning properties. In general formula (a1), R 2a From the viewpoint of cleaning properties, is preferably a hydrogen atom.

[0032] Specific examples of nonionic surfactants having no alkyleneoxy group other than the component (a1) include one or more selected from sucrose fatty acid esters, glycerin fatty acid esters, sorbitan fatty acid esters, alkyl glycosides, and glyceryl monoethers.

[0033] From the viewpoint of detergency, the anionic surfactant of the component (a) is preferably one or more selected from alkylarylsulfonic acid type surfactants, sulfate ester type surfactants, alkanesulfonic acid type surfactants, olefinsulfonic acid type surfactants, sulfosuccinic acid alkyl ester type surfactants, sulfofatty acid ester type surfactants, and fatty acids and salts thereof, more preferably one or more selected from alkylarylsulfonic acid type surfactants, sulfate ester type surfactants, sulfosuccinic acid alkyl ester type surfactants, and fatty acids and salts thereof, and even more preferably one or more selected from alkylarylsulfonic acid type surfactants, and fatty acids and salts thereof. When the anionic surfactant of component (a) is a salt, examples of the salt of the anionic surfactant include inorganic salts such as sodium salt, potassium salt, ammonium salt, magnesium salt, etc., and organic salts such as monoethanolamine salt, diethanolamine salt, triethanolamine salt, morpholine salt, etc. The salt of the anionic surfactant is preferably an inorganic salt selected from alkali metal salts such as sodium salt, potassium salt, etc. and alkaline earth metal salts such as magnesium salt, etc., more preferably an alkali metal salt, and even more preferably a sodium salt.

[0034] The anionic surfactant of the component (a) can be one or more compounds selected from the group consisting of compounds represented by the following general formula (a2), compounds represented by the general formula (a3), compounds represented by the general formula (a4), and compounds represented by the general formula (a5). R 3a -B-SO3M (a2) [In formula (a2), R 3a represents an alkyl group having 8 to 18 carbon atoms, B represents a benzene ring, and R bonded to the carbon atom of B 3a The carbon atom of is a secondary carbon atom, and M represents a cation. 3a whereas the sulfonic acid group is bonded at the ortho, meta or para position. R 4a -COOM (a3) [In formula (a3), R 4a represents an alkyl or alkenyl group having 8 to 18 carbon atoms, and M represents a cation. R 5a -O-(AO) n -SO3M (a4) [In formula (a4), R 5a is an aliphatic hydrocarbon group having 8 to 18 carbon atoms, the AO group is one or more alkyleneoxy groups selected from an ethyleneoxy group and a propyleneoxy group, n is a number of 0 to 20, and M is a cation. R 6a -CH(SO3M)COOR 7a (a5) [In formula (a5), R 6a represents an alkyl group having 8 to 18 carbon atoms, and R 7a represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, and M represents a cation.

[0035] In general formula (a2), R 3a is an alkyl group having 8 or more carbon atoms, preferably 10 or more, more preferably 12 or more, and preferably 18 or less, more preferably 16 or less, and even more preferably 14 or less. In the general formula (a2), M is preferably a hydrogen atom, an alkali metal such as sodium or potassium, an alkaline earth metal (1 / 2 atom) such as magnesium or calcium, or an organic ammonium. The organic ammonium salt may be a salt with an amine such as monoethanolamine, diethanolamine, or triethanolamine. M is preferably an alkali metal such as sodium or potassium, or an alkanolammonium such as monoethanolammonium or diethanolammonium, more preferably sodium.

[0036] In general formula (a3), R 4a R is an alkyl or alkenyl group having 8 or more carbon atoms, preferably 10 or more, more preferably 12 or more, and preferably 18 or less, more preferably 16 or less, and even more preferably 14 or less. 4a may be saturated or unsaturated and have a straight or branched chain, and is more preferably saturated and has a straight chain. In the general formula (a3), M is preferably a hydrogen atom, an alkali metal such as sodium or potassium, an alkaline earth metal (1 / 2 atom) such as magnesium or calcium, or an organic ammonium. The organic ammonium salt may be a salt with an amine such as monoethanolamine, diethanolamine, or triethanolamine. M is preferably an alkali metal such as sodium or potassium, or an alkanolammonium such as monoethanolammonium or diethanolammonium, more preferably sodium.

[0037] In general formula (a4), R 5a is preferably 10 or more, more preferably 11 or more, even more preferably 12 or more, and is an aliphatic hydrocarbon having a value of 18 or less, preferably 16 or less, more preferably 14 or less. 5a is a straight or branched chain aliphatic hydrocarbon, preferably a straight chain aliphatic hydrocarbon, more preferably a straight chain alkyl group.

[0038] In the general formula (a4), the AO group is one or more alkyleneoxy groups selected from an ethyleneoxy group and a propyleneoxy group. When the AO group contains an ethyleneoxy group and a propyleneoxy group, the ethyleneoxy group and the propyleneoxy group may be in a block bond or a random bond. From the viewpoint of improving cleaning properties, the AO group is preferably a group containing an ethyleneoxy group.

[0039] In general formula (a4), n is the average number of moles of AO groups added and is a number from 0 to 20. From the viewpoint of improving cleansing ability, n is preferably 1 or more, more preferably 2 or more, and from the viewpoint of improving cleansing ability, n is 20 or less, preferably 16 or less, more preferably 12 or less, even more preferably 8 or less, and still more preferably 4 or less.

[0040] In the general formula (a4), M is preferably a hydrogen atom, an alkali metal such as sodium or potassium, an alkaline earth metal (1 / 2 atom) such as magnesium or calcium, or an organic ammonium. The organic ammonium may be a salt with an amine such as monoethanolamine, diethanolamine, or triethanolamine. M is preferably an alkali metal such as sodium or potassium, or an alkanolammonium such as monoethanolammonium or diethanolammonium, more preferably sodium.

[0041] In general formula (a5), R 6a is an alkyl group having 8 or more carbon atoms, preferably 10 or more carbon atoms, and 18 or less, preferably 16 or less carbon atoms. In general formula (a5), R 7a is an alkyl group having 1 or more carbon atoms and preferably 5 or less, more preferably 4 or less.

[0042] In the general formula (a5), M is preferably a hydrogen atom, an alkali metal such as sodium or potassium, an alkaline earth metal (1 / 2 atom) such as magnesium or calcium, or an organic ammonium. The organic ammonium may be a salt with an amine such as monoethanolamine, diethanolamine, or triethanolamine. M is preferably an alkali metal such as sodium or potassium, or an alkanolammonium such as monoethanolammonium or diethanolammonium, more preferably sodium.

[0043] Examples of the cationic surfactant of component (a) include alkyltrimethylammonium salts in which the alkyl group has 8 to 22 carbon atoms, dialkyldimethylammonium salts in which the alkyl group has 8 to 22 carbon atoms, alkyldimethylbenzylammonium salts in which the alkyl group has 8 to 22 carbon atoms, and benzethonium salts. Examples of the salts include halogen salts and alkyl sulfates in which the carbon number is 1 to 3. These surfactants can be used alone or in combination of two or more kinds.

[0044] Examples of the amphoteric surfactant of the component (a) 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 addition, in these, the alkyl group is, for example, a lauryl group or a myristyl group.

[0045] <(b) Component> Component (b) is an alkaline agent, and examples of component (b) include one or more alkaline agents selected from alkali metal carbonates, alkali metal hydrogen carbonates, alkali metal silicates, and tripolyphosphates. Examples of the alkali metal carbonate include sodium carbonate and potassium carbonate, with sodium carbonate being preferred. Examples of the alkali metal hydrogen carbonate include sodium hydrogen carbonate and potassium hydrogen carbonate. The alkali metal silicate includes sodium silicate and potassium silicate. Tripolyphosphates include alkali metal salts of tripolyphosphate.

[0046] From the viewpoint of storage stability, the component (b) is preferably one or more alkaline agents selected from alkali metal carbonates and alkali metal hydrogen carbonates, more preferably one or more alkaline agents selected from alkali metal carbonates, even more preferably one or more alkaline agents selected from sodium carbonate and potassium carbonate, and even more preferably sodium carbonate.

[0047] The average primary particle size of component (b) is preferably 10 μm or more, more preferably 100 μm or more, even more preferably 300 μm or more, and preferably 1000 μm or less, more preferably 700 μm or less, even more preferably 500 μm or less. The average primary particle size of component (b) is measured using a low-tap type sieve shaker. Specifically, the average primary particle size of component (b) is determined by sieving a sample using standard sieves specified in JIS Z 8801, measuring the mass of the sample remaining on each sieve, and calculating the mass fraction according to the size of the sieve openings.

[0048] <Composition, etc.> The detergent composition of the present invention contains the component (a) in an amount of preferably 1 mass % or more, more preferably 5 mass % or more, and even more preferably 10 mass % or more from the viewpoint of detergency, and in an amount of preferably 50 mass % or less, more preferably 30 mass % or less, and even more preferably 20 mass % or less from the viewpoint of storage stability.

[0049] The detergent composition of the present invention contains component (b) in an amount of preferably 5 mass % or more, more preferably 10 mass % or more, and even more preferably 20 mass % or more from the viewpoint of detergency, and in an amount of preferably 50 mass % or less, more preferably 40 mass % or less, and even more preferably 30 mass % or less from the viewpoint of solubility of the detergent article.

[0050] In the cleaning composition of the present invention, the mass ratio (a) / (b) of the content of the component (a) to the content of the component (b) is, from the viewpoints of detergency and storage stability, preferably 1 / 10 or more, more preferably 1 / 5 or more, even more preferably 3 / 10 or more, and from the viewpoints of detergency and storage stability, preferably 2 / 1 or less, more preferably 1 / 1 or less, even more preferably 1 / 2 or less.

[0051] <(c) component> The detergent composition of the present invention may optionally contain an oil-absorbing carrier as component (c). The type of component (c) is not particularly limited, but from the viewpoint of retaining the surfactant, it is preferable that the oil-absorbing capacity is 120 mL / 100 g or more. The upper limit is not particularly limited. From the above viewpoint, in the present invention, the oil-absorbing carrier is preferably one or more selected from amorphous silica, calcium silicate, crystalline aluminosilicate, and amorphous aluminosilicate. The oil-absorbing capacity of the oil-absorbing carrier can be measured based on JIS K 5101-13-2. Component (c) is preferably a water-insoluble carrier. With respect to component (c), "water-insoluble" means that 0.1 g or more does not dissolve in 100 g of water at 20°C.

[0052] The average primary particle size of component (c) is preferably 0.1 μm or more, more preferably 1 μm or more, and preferably 1000 μm or less, more preferably 500 μm or less, and even more preferably 100 μm or less. The average primary particle size of component (c) is measured by a laser diffraction / scattering type particle distribution measuring device. This average primary particle size is the D50 (median size) of the cumulative particle size distribution based on volume.

[0053] When the cleaning composition of the present invention contains the component (c), from the viewpoint of storage stability, the cleaning composition of the present invention contains the component (c) in an amount of preferably 1 mass % or more, more preferably 3 mass % or more, even more preferably 5 mass % or more, and preferably 50 mass % or less, more preferably 40 mass % or less, even more preferably 30 mass % or less.

[0054] <(d) component> The detergent composition of the present invention may optionally contain one or more enzymes selected from proteases, lipases and amylases as the component (d). Proteases include, for example, serine proteases (EC 3.4.21) and metalloproteases (EC 3.4.17 or EC 3.4.24). Examples of suitable proteases include neutral or alkaline serine proteases such as subtilisin (EC 3.4.21.62). Examples of lipases include triacylglycerol lipase (EC 3.1.1.3), phospholipase A2 (EC 3.1.1.4), lysophospholipase (EC 3.1.1.5), monoglyceride lipase (EC 3.1.1.23), galactolipase (EC 3.1.1.26), phospholipase A1 (EC 3.1.1.32), and lipoprotein lipase (EC 3.1.1.34). Examples of amylases include α-amylase (EC 3.2.1.1), β-amylase (EC 3.2.1.2) and / or glucoamylase (EC 3.2.1.3), etc. Suitable examples of amylases include neutral or alkaline α-amylases, preferably of microbial origin, such as bacteria or fungi.

[0055] When the cleaning composition of the present invention contains the component (d), the cleaning composition of the present invention contains the component (d) in an amount of preferably 0.01 mass % or more, more preferably 0.1 mass % or more, even more preferably 0.5 mass % or more, and preferably 10 mass % or less, more preferably 7 mass % or less, and even more preferably 5 mass % or less, from the viewpoint of detergency.

[0056] <(e) component> The cleaning composition of the present invention may contain, as component (e), one or more compounds selected from inorganic sulfates and inorganic halogen compounds. Examples of component (e) include compounds selected from sodium sulfate, magnesium sulfate, sodium chloride, and magnesium chloride. Component (e) may be either a hydrate or an anhydride.

[0057] When the cleaning composition of the present invention contains the component (e), from the viewpoint of detergency, the cleaning composition of the present invention contains the component (e) in an amount of preferably 2 mass % or more, more preferably 5 mass % or more, even more preferably 10 mass % or more, still more preferably 20 mass % or more, still more preferably 30 mass % or more, and preferably 60 mass % or less, more preferably 50 mass % or less, and even more preferably 40 mass % or less.

[0058] <Component (f)> The cleaning composition of the present invention may optionally contain, as component (f), a polymer having a carboxylic acid group or a salt thereof and having a weight average molecular weight of 3,000 or more. The component (f) may be one or more polymers selected from polyacrylic acid or a salt thereof, and a copolymer of acrylic acid and maleic acid or a salt thereof (hereinafter referred to as component (f1)). Examples of polyacrylic acid or a salt thereof include polyacrylic acid, sodium polyacrylate, potassium polyacrylate, etc., and preferably sodium polyacrylate and potassium polyacrylate. Examples of the copolymer of acrylic acid and maleic acid or its salt include a copolymer of acrylic acid and maleic acid, a sodium salt of a copolymer of acrylic acid and maleic acid, a potassium salt of a copolymer of acrylic acid and maleic acid, etc., and preferably a sodium salt of a copolymer of acrylic acid and maleic acid, or a potassium salt of a copolymer of acrylic acid and maleic acid. The molar ratio of the copolymer of acrylic acid and maleic acid, in terms of the number of moles of acrylic acid / the number of moles of maleic acid, is preferably 1 / 99 or more, more preferably 10 / 90 or more, and is preferably 99 / 1 or less, more preferably 90 / 10 or less.

[0059] The component (f1) may be a copolymer containing a monomer other than acrylic acid and maleic acid that is copolymerizable with acrylic acid and / or maleic acid. Examples of the monomer other than acrylic acid and maleic acid that is copolymerizable with acrylic acid and / or maleic acid include vinyl monomers, acrylic monomers, styrene monomers, etc., more specifically, methacrylic acid, methyl acrylate, ethyl acrylate, methyl methacrylate, styrene, etc. The molar ratio of the monomer other than acrylic acid and maleic acid that is copolymerizable with acrylic acid and / or maleic acid in the component (f1) is preferably 0 mol% or more, and preferably 5 mol% or less, more preferably 3 mol% or less, and even more 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 that is copolymerizable with acrylic acid and / or maleic acid in the range of 0 mol% or more and 5 mol% or less in the total constituent monomers.

[0060] The weight average molecular weight of component (f) 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 preferably 100,000 or less, more preferably 50,000 or less. The weight average molecular weight can be measured according to the following method for measuring weight average molecular weight.

[0061] <Method for measuring weight average molecular weight> 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 calculated using a conversion standard substance. The GPC measurement conditions are as follows. Column: 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 dihydrogen phosphate and 0.1 mol / L sodium dihydrogen phosphate aqueous solution / acetonitrile = 90 / 10 (volume ratio) Detector: Refractive index detector Column temperature: 40℃ ·Flow rate: 1.0mL / min Conversion standard material: Polyacrylic acid (American Standard Corporation) Sample: Add ion-exchanged water to an aqueous polymer solution containing 0.8 g of solids to make the total volume 200 mL, and then take 10 μL of this solution and inject it into the column.

[0062] When the cleaning composition of the present invention contains the component (f), from the viewpoints of cleaning performance and stability, the cleaning composition of the present invention contains the component (f) in an amount of preferably 0.1 mass % or more, more preferably 0.5 mass % or more, even more preferably 2 mass % or more, still more preferably 5 mass % or more, and preferably 20 mass % or less, more preferably 15 mass % or less, and even more preferably 10 mass % or less.

[0063] <(g) component> The cleaning composition of the present invention may optionally contain, as the component (g), a polyalkylene glycol having a weight average molecular weight of 100 or more and 100,000 or less. The component (g) may be one or more selected from polyethylene glycol and polypropylene glycol. The weight average molecular weight of component (g) is 100 or more, preferably 1,000 or more, and preferably 10,000 or less, more preferably 2,000 or less. The weight average molecular weight herein is a value determined by gel permeation chromatography using polystyrene as a standard substance.

[0064] When the cleaning composition of the present invention contains the component (g), from the viewpoint of stability, the cleaning composition of the present invention contains the component (g) in an amount of preferably 0.001 mass% or more, more preferably 0.01 mass% or more, even more preferably 0.1 mass% or more, still more preferably 1 mass% or more, still more preferably 5 mass% or more, still more preferably 10 mass% or more, and preferably 40 mass% or less, more preferably 30 mass% or less, and even more preferably 20 mass% or less.

[0065] The detergent composition of the present invention may optionally contain other components known in the field of laundry detergents, such as bleaching agents (perborates, bleach activators, etc.), anti-redeposition agents, reducing agents (sulfites, etc.), fluorescent brightening agents, foam suppressors (silicones, etc.), organic solvents, fragrances, colorants, antibacterial agents, etc. (excluding those corresponding to components (a) to (g)).

[0066] The detergent composition of the present invention may be a solid detergent composition. The detergent composition of the present invention may be in the form of a powder, a granule, or a granule. From the viewpoint of the solubility of the detergent article, the detergent composition of the present invention is preferably one or more detergent compositions selected from the powder, the granule, and the granule. The detergent composition of the present invention may be a powder detergent composition.

[0067] The detergent composition of the present invention can be produced by a known method, for example, a spray drying method, a dry neutralization method, a dry granulation method, a dry blending method, a fluidized bed drying method, a thin film drying method, an extrusion granulation method, a tumbling granulation method, agitation granulation method, a compaction granulation method, a surfactant supporting method, or a combination of methods selected from these.

[0068] The bulk density of the detergent composition of the present invention varies depending on the production method, but is preferably 0.2 g / cm 3 More preferably, 0.3 g / cm 3 More preferably, 0.35 g / cm 3 More than 1 g / cm 3 Less than or equal to 0.95 g / cm 3 More preferably, 0.9 g / cm3 The following is the result.

[0069] 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 50 μm or more, more preferably 100 μm or more, even more preferably 150 μm or more, still more preferably 200 μm or more, and preferably 1000 μm or less, more preferably 700 μm or less, even more preferably 500 μm or less. The average particle size is determined using a low tap type sieve shaker. Specifically, the average particle size of the cleaning composition of the present invention is determined by sieving a sample using standard sieves specified in JIS Z 8801, measuring the mass of the sample remaining on each sieve, and calculating the mass fraction according to the size of the sieve openings.

[0070] <Water-soluble film> In the present invention, the term "water-soluble" in relation to a water-soluble film means that, after placing 500 g of 30°C ion-exchanged water in a 1-liter glass beaker, placing a Teflon (registered trademark) stirrer with a diameter of 8 cm, adding 1 g of the film to be evaluated, and stirring at 100 rpm for 30 minutes, no insoluble matter is apparent. In addition, from the viewpoints of preventing accidental ingestion and the solubility of the cleaning article, the thickness of the water-soluble film is preferably 1 μm or more, more preferably 10 μm or more, even more preferably 50 μm or more, and preferably 250 μm or less, more preferably 200 μm or less, even more preferably 150 μm or less, and even more preferably 100 μm or less.

[0071] 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, blowing, extrusion, injection molding of polymers, etc. 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 and their salts such as polyacrylates, maleic acid / acrylic acid copolymers, polyamino acids or peptides, polyamides such as polyacrylamides, polysaccharides such as starch and gelatin, natural gums such as xanthan and carragum. Vinyl alcohol copolymers are copolymers of vinyl alcohol with other monomers, such as ethylene, acrylic acid. Preferably, the water-soluble film comprises a polymer selected from the group consisting of polyacrylates and water-soluble acrylates, methylcellulose, sodium carboxymethylcellulose, dextrin, ethylcellulose, hydroxyethylcellulose, maltodextrin, polymethacrylates, polyvinyl alcohol, vinyl alcohol copolymers, hydroxypropylmethylcellulose (HPMC), and combinations thereof. More preferably, the water-soluble film comprises a polymer selected from polyvinyl alcohol, vinyl alcohol copolymers, and hydroxypropylmethylcellulose. Even more preferably, the water-soluble film comprises polyvinyl alcohol, such as Solvron available from Aicello Co., Ltd. Suitable polymers for producing water-soluble films are described, for example, in U.S. Pat. No. 6,995,126.

[0072] In the detergent article of the present invention, the total area of ​​the water-soluble film that comes into contact with the detergent composition of the present invention is preferably 2 cm2 or less from the viewpoint of further improving the product stability. 2 More than 5cm, preferably 5cm 2 More than 7cm, more preferably 2 More preferably, 15 cm 2 From the same viewpoint, preferably 100 cm2 Less than or equal to 70cm, preferably 2 Less than 60cm, more preferably 2 Less than 45cm, more preferably 45cm 2 The following is the result.

[0073] The cleaning article of the present invention can be made by any suitable process known in the art, such as known detergent pouch making processes. Exemplary pouch making processes are described in U.S. Patent Nos. 6,995,126, 7,127,874, 8,156,713, 7,386,971, 7,439,215, and U.S. Patent Application Publication No. 2009 / 199877.

[0074] The amount of contents per cleaning article of the present invention is preferably 5 g or more, more preferably 8 g or more, even more preferably 10 g or more, and preferably 50 g or less, more preferably 30 g or less, even more preferably 25 g or less.

[0075] The preferred shape and size of each of the cleaning articles of the present invention is, for example, a quadrilateral, with the length of one side being preferably 1 cm or more and 5 cm or less, and the thickness being preferably 1 cm or more and 5 cm or less, more preferably 1 cm or more and 4 cm or less. The weight of each of the cleaning articles of the present invention 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, even more preferably 30 g or less.

[0076] Another preferred shape and size of each of the detergent articles of the present invention is, for example, a rectangular parallelepiped, with a vertical length of preferably 5 cm to 20 cm, more preferably 7 cm to 15 cm, a horizontal length of preferably 0.5 cm to 4 cm, more preferably 1.0 cm to 2 cm, and a thickness of preferably 0.5 cm to 5 cm, more preferably 1 cm to 2 cm. The mass of each of the detergent articles of the present invention is preferably 5 g or more, more preferably 10 g or more, and preferably 50 g or less, more preferably 40 g or less, even more preferably 30 g or less, even more preferably 20 g or less.

[0077] The detergent product and detergent article of the present invention can be suitably used for textile products, for hard surfaces such as tableware, and for automatic dishwashers, and is preferably used for textile products.

[0078] When a textile product is washed with the detergent article provided in the detergent product of the present invention, the fiber to be washed may be either a hydrophobic fiber or a hydrophilic fiber. Examples of hydrophobic fibers include protein fibers (milk protein casein fibers, Promix, etc.), polyamide fibers (nylon, etc.), polyester fibers (polyester, etc.), polyacrylonitrile fibers (acrylic, etc.), polyvinyl alcohol fibers (vinylon, etc.), polyvinyl chloride fibers (polyvinyl chloride, etc.), polyvinylidene chloride fibers (vinylidene, etc.), polyolefin fibers (polyethylene, polypropylene, etc.), polyurethane fibers (polyurethane, etc.), polyvinyl chloride / polyvinyl alcohol copolymer fibers (polycral, etc.), polyalkylene paraoxybenzoate fibers (benzoate, etc.), polyfluoroethylene fibers (polytetrafluoroethylene, etc.), glass fibers, carbon fibers, alumina fibers, silicone carbide fibers, rock fibers (rock fibers), slag fibers (slag fibers), and metal fibers (gold thread, silver thread, steel fiber). Examples of hydrophilic fibers include seed hair fibers (cotton, kapok, etc.), bast fibers (hemp, flax, ramie, hemp, jute, etc.), leaf vein fibers (Manila hemp, sisal, etc.), palm fibers, rush, straw, animal hair fibers (wool, mohair, cashmere, camel hair, alpaca, vicuna, angora, etc.), silk fibers (domestic silk, wild silk), feathers, and cellulosic fibers (rayon, polynosic, cupra, acetate, etc.). From the viewpoint of finishing quality, the fiber is preferably a fiber containing cotton fiber. From the viewpoint of finishing quality of the fiber, the content of cotton fiber in the fiber is preferably 5% by mass or more, more preferably 10% by mass or more, even more preferably 15% by mass or more, still more preferably 20% by mass or more, still more preferably 40% by mass or more, still more preferably 60% by mass or more, still more preferably 80% by mass or more, and preferably 100% by mass or less, and may be 100% by mass.

[0079] In the present invention, the textile product refers to fabrics such as woven fabrics, knitted fabrics, and nonwoven fabrics using the hydrophobic fibers or hydrophilic fibers, and products obtained using the same, such as undershirts, T-shirts, dress shirts, blouses, slacks, hats, handkerchiefs, towels, knitwear, socks, underwear, and tights.

[0080] [How to wash textile products] The present invention provides a method for cleaning textile products, which comprises cleaning the textile products with a cleaning liquid (hereinafter referred to as the cleaning liquid of the present invention) comprising a mixture of the cleaning agent article of the present invention and water. In the method for cleaning textile products of the present invention, the aspects described in the detergent product of the present invention, the detergent composition of the present invention, and the detergent article of the present invention can be applied. In the method for washing textile products of the present invention, the cleaning agent article of the present invention and water may first be charged into a washing tank and mixed to prepare the cleaning solution of the present invention, and then the textile product to be washed is charged and the textile product is washed. However, from the viewpoint of enjoying the effects of the present invention, a method is preferred in which the cleaning agent article of the present invention, water, and the textile product are charged into a washing tank, and the cleaning solution of the present invention is prepared while the cleaning agent article of the present invention is dissolved in the water, and the textile product is washed at the same time.

[0081] The method for washing textile products of the present invention is suitable for a method of immersing textile products in a liquid used for scouring while feeding the textile products with rollers or the like, and a rotary washing method. The rotary washing method means a washing method in which a textile product not fixed to a rotating device rotates around a rotating shaft together with the washing liquid. The rotary washing method can be carried out by a rotary washing machine. Therefore, in the present invention, in order to finish the textile products more beautifully, it is preferable to wash the textile products using a rotary washing machine. Specific examples of the rotary washing machine include a drum washing machine, a pulsator washing machine, and an agitator washing machine. For these rotary washing machines, those commercially available for home use can be used. EXAMPLES

[0082] <Composition ingredients> In the examples and comparative examples, the following components were used in preparing the cleaning compositions. [Component (a)] Emulgen 110L: Polyoxyethylene alkyl ether (alkyl group carbon number 12, average number of oxyethylene added moles 10), manufactured by Kao Corporation LAS-Na: Sodium laurylbenzenesulfonate, Neopelex G-65, manufactured by Kao Corporation [(b) Component] Sodium carbonate, Fujifilm Wako Pure Chemical Industries, Ltd.

[0083] <Preparation of cleaning composition> A detergent composition was prepared using the above blended components in the following manner: 70 g of polyoxyoxyethylene alkyl ether (component (a)), 30 g of sodium laurylbenzenesulfonate, and 500 g of sodium carbonate (component (b)) were mixed, and the component (a) was adsorbed onto the component (b) to obtain a powder detergent composition.

[0084] <Preparation of cleaning agent article> Two sheets of water-soluble film made of polyvinyl alcohol (length 13 cm, width 2 cm, thickness 51 μm or 76 μm, M8685, manufactured by Monosol Co., Ltd.) having the thickness shown in Table 1 were stacked, and three sides were fused with a heat sealer (manufactured by Fuji Impulse Co., Ltd.) to prepare a bag with only one side open, and 13 g of the above-mentioned detergent composition was placed in this bag. The 152 μm and 228 μm thick water-soluble films in the detergent products of Examples 12 and 13 were obtained by applying a thin layer of water to one side of each of two or three sheets of the above-mentioned 76 μm water-soluble film, stacking them, and adhering them. Thereafter, the open side of the bag was heat sealed to obtain a detergent article in which the detergent composition was packaged in a water-soluble film. In this detergent article, the total area of ​​the water-soluble film in contact with the detergent composition was 30 cm. 2 It should be noted that the cleaning article of the present invention is not limited to those produced by the above-mentioned production method. In the above-mentioned detergent article, the ratio (d) / (c2) of the volume (d) of the detergent composition to the volume (c2) of the detergent article was determined by the following method. First, ethanol was placed in a measuring cylinder, and the volume per detergent article was determined from the increase in volume when the detergent article was placed therein. The volume of 0.5 g of water-soluble film used per detergent article was determined by the same method. Then, the volume (c2) of the detergent article was calculated by subtracting the volume of the water-soluble film from the volume of the detergent article. In addition, the detergent composition contained in the detergent article was crushed in a mortar, packed into a measuring cylinder, and pushed with a spatula, and the volume was measured to determine the volume (d) of the detergent composition. The ratio (d) / (c2) was determined from the determined volume (c2) of the detergent article and the volume (d) of the detergent composition, and (d) / (c2) was 90%. The detergent articles contained in the detergent products of Examples 8 and 9 were detergent articles in which 8.5 g and 11.5 g of detergent composition were placed in bags made using the same water-soluble film as above.

[0085] <Outer packaging> The outer container used was a zip-lock bag made of aluminum-deposited stretched polyethylene terephthalate film (PET12 / / VM-PET12 / / LLDPE80, width 240 mm x height 190 mm x depth 40 mm, thickness 50 μm or 80 μm). Note that PET is polyethylene terephthalate film, VM-PET is aluminum-deposited polyethylene terephthalate film, and LLDPE80 is low molecular weight polyethylene film. This zip-lock bag has an opening at the top and a zipper at the top that can open and close the opening. The outer containers of the cleaning agent products of Examples 14 and 15 were made by stacking two or four ziplock bags having a thickness of 80 μm.

[0086] <Evaluation of mass increase rate> A cleaning agent product was prepared by packing the cleaning agent articles into an outer container so as to satisfy the conditions shown in Table 1. The cleaning agent articles were placed in the outer container so that the major axis of the maximum projected area of ​​the cleaning agent articles was parallel to the bottom surface of the outer container, and the cleaning agent articles were stacked in the outer container so as to form a predetermined space b. This detergent product was stored for two weeks in an atmosphere with a temperature of 40°C and a relative humidity of 80%RT. In addition, assuming actual use, the outer container was opened once a day for 30 seconds. After two weeks of storage, the mass of the detergent article was measured, and the mass increase rate was calculated according to the following formula (1) using the mass of the detergent article after storage and the mass of the detergent article before storage that was previously measured. It can be said that the lower the mass increase rate, the more excellent the storage stability of the detergent composition and the detergent article of the detergent product. In Table 1, the mass increase rates of the three detergent articles stored in a position close to the opening were calculated, and the average value is shown. Mass increase rate (mass%) = 100 × [(mass of cleaning product after storage) - (mass of cleaning product before storage)] / (mass of cleaning product before storage) (1)

[0087] <Solubility evaluation> The solubility of the detergent article contained in the detergent product of the example was evaluated based on the diameter of the undissolved residue of the detergent composition that remained after washing. The diameter of the undissolved residue of the detergent composition was measured by the following method. The detergent article was prepared based on the methods described in the above <Preparation of detergent composition> and <Preparation of detergent article>, and was stored for 2 weeks under the same conditions as those in the above <Evaluation of mass increase rate>. For the evaluation of solubility, the detergent article contained in the position close to the opening was used. 1 kg of cotton shirt (Gunze) was washed in a fully automatic washing machine (NA-FR80H6, Panasonic) with 30 L of water for 10 minutes and 2 rinses. The specific washing conditions were as follows: 1 kg of cotton shirt and one detergent article in which 13 g of detergent composition was packaged in a water-soluble film were placed in a tergotometer, 30 L of water was poured in, and the detergent article was dissolved in water to prepare a washing solution, while washing the cotton shirt at 100 rpm for 10 minutes. The bath ratio (water (kg) / cotton shirt (kg)) was 20. The water temperature of each washing solution was 20°C. After washing, the cotton shirts were dried in a dryer (OT-20S, manufactured by Tosen Corporation). After washing, the cotton shirt was visually inspected and the residue of the detergent composition that had not dissolved was collected. The diameter (mm) of the collected residue was measured with a caliper, and the average value is shown in Table 1. The smaller the size of the residue, or even if no residue was found, the better the solubility of the detergent composition and the detergent article.

[0088] <Evaluation of ease of removal> The cleaning agent articles were packed into the outer container to meet the conditions shown in Table 1. The ratio (c1) / (b) of the volume (c1) of the cleaning agent article to the volume (b) of the space b of the outer container was calculated based on the volume of ethanol when the space b of the outer container was filled with ethanol at 20°C without the cleaning agent article in the outer container, and the volume of ethanol when the space b of the outer container was filled with ethanol at 20°C with the cleaning agent article in the outer container. Ten evaluators then took out one of the cleaning articles from the outer container and evaluated the ease of removing the cleaning article from the cleaning product based on the following evaluation criteria. Table 1 shows the average evaluation scores from the ten evaluators. The higher the evaluation score, the easier it is to remove the cleaning article from the cleaning product. Evaluation criteria 5: Very easy to take out 4: Somewhat easy to remove 3: Neither 2: Somewhat difficult to remove 1: Very difficult to remove

[0089] [Table 1] [Explanation of symbols]

[0090] 1. Cleaning products 2. Cleaning products 3 Outer packaging 4 horizontal plane a, b Space part

Claims

1. A cleaning agent article comprising a cleaning agent composition packaged in a water-soluble film and an outer container for accommodating the cleaning agent article, The outer container has an opening formed at its upper end, through which the stored cleaning agent article can be removed, and an upper space portion a and a lower space portion b, which are in contact with the cleaning agent article stored in the outer container and are separated by a horizontal plane closest to the opening, a ratio (a) / (b) of the volume (a) of the space portion (a) to the volume (b) of the space portion (b) is 1 / 9 or more and 9 / 1 or less; The volume (c) of the cleaning article accommodated in the space b relative to the volume (b) of the space b １ ) ratio (c １ ) / (b) is 20% or more and less than 90%; The volume (c ２ ) to the volume (d) of the cleaning composition (d) ratio (d) / (c ２ ) is 50% or more and 100% or less, Cleaning products.

2. Water-soluble film thickness d １ The cleaning product according to claim 1, wherein the particle size is 10 μm or more and 250 μm or less.

3. Thickness of outer container d ２ The cleaning agent product according to claim 1 or 2, wherein the particle size is 10 μm or more and 1000 μm or less.

4. 3. The cleaning agent product according to claim 1, wherein a ratio (a) / (b) of a volume (a) of the space portion a to a volume (b) of the space portion b is 2 / 8 or more and 8 / 2 or less.

5. The volume (c) of the cleaning article accommodated in the space b relative to the volume (b) of the space b １ ) ratio (c １ 3. The cleaning agent product according to claim 1, wherein the ratio of (a) / (b) is 40% or more and 80% or less.

6. Water-soluble film thickness d １ and the thickness of the outer container d ２ The ratio (d １ ) / (d ２ 3. The cleaning agent product according to claim 1 or 2, wherein the value of (a) is 0.1 or more and 3.0 or less.

7. 3. The detergent product according to claim 1, wherein the aspect ratio (major axis diameter / minor axis diameter) of the major axis diameter of the maximum projected area of ​​the detergent article to the minor axis diameter perpendicular to the major axis diameter is 5 or more and 20 or less.

8. The cleaning agent product according to claim 1 or 2, wherein the outer container is provided with an aluminum vapor deposition layer.

9. 3. The detergent product according to claim 1, wherein the detergent composition is in a powder form and has an average particle size of 50 μm or more and 500 μm or less.

10. 3. The cleaning product according to claim 1 or 2, which is for textile products.

Images