Solid composition for laundry processing

Abstract

To provide a laundry composition that exhibits a good deodorizing effect on clothing. [Solution] (A) At least one compound selected from aluminum chlorohydroxy, aluminum chloride, potassium aluminum sulfate, and paraphenolsulfonic acid, (B) At least one compound selected from component (B-1) and component (B-2) having a melting point of 25°C or higher. (B-1) At least one compound selected from water-soluble nonionic surfactants, polyethylene glycol, and copolymers of polyoxyethylene and polyoxypropylene. (B-2) Water-insoluble components with a melting point of 50°C or higher A solid composition for laundry processing containing the following:

Description

Technical Field

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[0001] The present invention relates to a solid composition for laundry treatment.

Background Art

[0002] Due to the increasing awareness of hygiene in recent years, there is an even greater demand for detergents that exhibit a deodorizing effect on laundry. Among the deodorizing technologies in detergents, there are those that contain deodorizing base agents such as cluster dextrin and antibacterial agents such as dichlorosane. Regarding the slow dissolution technology, technologies related to solid compositions considering slow dissolution during washing and drying, heat resistance, and impact resistance have been reported (Patent Documents 1 and 2).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, there is a problem that the above deodorizing technology is insufficient in terms of the malodor generated under severe conditions such as packed washing or drying clothes in a high - humidity environment. In contrast, it has been found that when a compound such as chlorhydroxyaluminum (ACH), which is known to have an antiperspirant effect, is incorporated into a detergent, high deodorizing properties can be exhibited. However, such compounds are highly water - soluble, and in a normal liquid formulation, it is difficult to achieve a high effect because the residue on clothes is reduced. An object of the present invention is to provide a composition for laundry treatment that exhibits a good deodorizing effect on clothes.

Means for Solving the Problems

[0005] As a result of diligent research, the inventors have found that by combining a component that is solid at temperatures above 25°C with components such as ACH, the components such as ACH are gradually dissolved into the laundry water, thereby increasing the efficiency of the components such as ACH remaining on clothing and exhibiting a high deodorizing effect. The present invention relates, for example, to the following [1] to [4]. [1] (A) at least one compound selected from aluminum chlorohydroxy, aluminum chloride, potassium aluminum sulfate, and paraphenolsulfonic acid, and (B) At least one compound selected from component (B-1) and component (B-2) having a melting point of 25°C or higher. (B-1) At least one compound selected from water-soluble nonionic surfactants, polyethylene glycol, and copolymers of polyoxyethylene and polyoxypropylene. (B-2) Water-insoluble components with a melting point of 50°C or higher A solid composition for laundry processing containing the following: [2] The solid composition for laundry treatment according to [1], wherein component (B) comprises one or more components (B-1) and one or more components (B-2). [3] A solid composition for laundry treatment according to [1] or [2], containing 1 to 30% by mass of component (A). [4] A solid composition for laundry treatment according to any one of the above items [1] to [3], wherein component (A) is aluminum chlorohydrate. [5] (C) At least one type of sugar A solid composition for laundry treatment according to any one of the above [1] to [4], in the form of a tablet, further containing the above. [Effects of the Invention]

[0006] According to one aspect of the present invention, a laundry composition that exhibits a good deodorizing effect on clothing can be provided. [Brief explanation of the drawing]

[0007] [Figure 1]This is a side view showing an example of a tablet composition. [Figure 2] This is a side view showing another example of a tablet composition. [Figure 3] (a) is a perspective view showing another example of the tablet composition, and (b) is a cross-sectional view of the tablet composition shown in (a) along the line A-A'. [Modes for carrying out the invention]

[0008] In this specification, "solid composition for laundry processing" means a solid composition for use in laundry processing. The form of the solid composition is not particularly limited, but is preferably in the form of a tablet. A solid composition in the form of a tablet may be referred to as a tablet composition in this specification.

[0009] [(A) component] In the solid composition for laundry treatment of the present invention, component (A) provides a high deodorizing effect. Component (A) is at least one compound selected from aluminum chlorohydroxyaluminum (solid), aluminum chloride (solid), aluminum sulfate (solid), and paraphenolsulfonic acid (liquid). Component (A) is preferably aluminum chlorohydroxyaluminum from the viewpoint of deodorizing effect. (A) The amount of component is not particularly limited as long as it is sufficient to achieve the purpose of the formulation, but is preferably 1 to 30% by mass, more preferably 1 to 20% by mass, and even more preferably 1 to 10% by mass, relative to the total mass of the solid composition.

[0010] [(B) Component] In the solid composition for laundry treatment of the present invention, the incorporation of component (B) provides appropriate slow dissolution properties, and enables the application of the high deodorizing effect of component (A) to clothing. Component (B) is at least one compound selected from components (B-1) and (B-2) that has a melting point of 25°C or higher. (Component (B-1)): At least one compound selected from a water-soluble nonionic surfactant, polyethylene glycol, and a copolymer of polyoxyethylene and polyoxypropylene. (Component (B-2)): A water-insoluble component having a melting point of 50°C or higher. (The amount of component (B) is not particularly limited as long as the blending purpose can be achieved, but is preferably 30 to 99% by mass, more preferably 45 to 90% by mass, and still more preferably 60 to 85% by mass based on the total mass of the solid composition. In the solid composition for laundry treatment of the present invention, the mass ratio (A) / (B) of component (A) to component (B) is preferably 0.5 or less, more preferably 0.3 or less, and still more preferably 0.1 or less.

[0011] <(Component (B-1))> (Component (B-1)) is at least one compound having a melting point of 25°C or higher, selected from a water-soluble nonionic surfactant, polyethylene glycol, and a copolymer of polyoxyethylene and polyoxypropylene. (The melting point of component (B-1)) is preferably 30°C or higher, more preferably 35°C or higher. (The upper limit of the melting point of component (B-1)) is not particularly limited, but is preferably 120°C or lower, more preferably 115°C or lower. In this specification, "water-soluble" means that after melting a sample at a temperature sufficient to melt it, pouring it into a 2 cm square silicon or stainless steel mold, and cooling and solidifying the melted liquid at a temperature sufficient to cool and solidify it into a cube-shaped solid, when stirred in 15°C, 500 ml of water for 10 minutes with a magnetic stirrer (MAGNETIC STIRRER F-626N manufactured by Tokyo Glass Kikai Co., Ltd.) at level 4 (corresponding to 600 rpm), 0.4 g or more and 2.0 g or less dissolves.

[0012] (The water-soluble nonionic surfactant as component (B-1)) is preferably a surfactant containing a polyoxyalkylene chain. This polyoxyalkylene chain is preferably a polyoxyethylene chain. (B-1) component, as the water-soluble nonionic surfactant, known ones can be used. For example, polyoxyethylene alkyl ether, polyoxyethylene fatty acid ester, derivative of polyethylene glycol, derivative of copolymer of polyoxyethylene and polyoxypropylene, polyoxyethylene hydrogenated castor oil, polyoxyethylene alkyl phenyl ether, polyoxyethylene alkyl amine, polyoxyethylene fatty acid diester, polyoxyethylene lanolin ether, polyoxyethylene polyhydric alcohol ether, etc. can be mentioned. Among them, as the water-soluble nonionic surfactant of (B-1) component, polyoxyethylene alkyl ether, polyoxyethylene fatty acid ester, derivative of copolymer of polyoxyethylene and polyoxypropylene are preferable, and polyoxyethylene alkyl ether is more preferable.

[0013] As the derivative of polyethylene glycol, known ones can be used, and its average molecular weight is, for example, 1,000 to 10,000. As the derivative of copolymer of polyoxyethylene and polyoxypropylene, known ones can be used, and its average molecular weight is, for example, 1,000 to 8,000. The molecular weight values in the derivative of polyethylene glycol and the derivative of copolymer of polyoxyethylene and polyoxypropylene may be those measured by known general measurement methods, and the average molecular weight means the weight average molecular weight. The derivative of polyethylene glycol and the derivative of copolymer of polyoxyethylene and polyoxypropylene are, for example, modified polyether compounds obtained from the reaction of polyalkylene glycol and organic polyisocyanate, sorbitan ester ethylene oxide derivatives obtained from the reaction of polyalkylene glycol and sorbitan, etc., but are not limited thereto.

[0014] When the water-soluble nonionic surfactant component (B-1) is a compound in which ethylene oxide (EO) is added to its structure, such as a polyoxyethylene alkyl ether, a polyoxyethylene fatty acid ester, or a derivative of a copolymer of polyoxyethylene and polyoxypropylene, the average number of moles of EO added is preferably 2 to 60, more preferably 10 to 60, and even more preferably 20 to 50. When the water-soluble nonionic surfactant component (B-1) is a compound containing propylene oxide (PO) in its structure, such as a derivative of a copolymer of polyoxyethylene and polyoxypropylene, the average number of moles of PO added is preferably 1 to 30, more preferably 5 to 20, and even more preferably 10 to 15. When the water-soluble nonionic surfactant component (B-1) is a compound containing an alkyl group in its structure, such as a polyoxyethylene alkyl ether, the alkyl group may be linear or branched, and preferably has a chain length of 8 to 24 carbon atoms, more preferably 12 to 22 carbon atoms, and even more preferably 16 to 20 carbon atoms. When the water-soluble nonionic surfactant component (B-1) is a compound containing a fatty acid-derived hydrocarbon group in its structure, such as a polyoxyethylene fatty acid ester, the hydrocarbon group may be linear or branched, and preferably has a chain length of 8 to 24 carbon atoms, more preferably 12 to 22 carbon atoms, and even more preferably 16 to 20 carbon atoms. Such fatty acid-derived hydrocarbon groups may be saturated or unsaturated. When component (B-1) is a water-soluble nonionic surfactant, the HLB value of component (B-1) is not particularly limited, but is preferably 4 to 20, more preferably 15 to 18.

[0015] (B-1) Commercially available water-soluble nonionic surfactants include the Brownon series manufactured by Aoki Oil & Fat Industry Co., Ltd., specifically Brownon SR-720 (polyoxyethylene stearyl ether (20), melting point 47℃), Brownon SR-702 (polyoxyethylene stearyl ether (2), melting point 30℃), Brownon SR-750 (polyoxyethylene stearyl ether (50), melting point 58℃), and Brownon CH-320L (polyoxyethylene stearyl ether (50), melting point 58℃). Examples include, but are not limited to, ethylene cetyl ether (20), melting point 40°C, Braunon CH-340F (polyoxyethylene cetyl ether (40), melting point 42°C), Braunon RCW60 (polyoxyethylene hydrogenated castor oil, melting point 30-34°C), Kao Corporation's Emanon CH-60 (polyoxyethylene hydrogenated castor oil, melting point 31°C), and Sanyo Chemical Industries' Newpol T240-U (modified polyether, melting point 58°C).

[0016] (B-1) As the polyethylene glycol, known types can be used. The average molecular weight of polyethylene glycol is, for example, 2,000 (e.g., melting point 50-53°C) to 20,000 (e.g., melting point 61-65°C), preferably 6,000 (e.g., melting point 60-63°C) to 20,000, and more preferably 10,000 (e.g., melting point 61-63°C) to 20,000. (B-1) As the copolymer of polyoxyethylene and polyoxypropylene, known materials can be used. Their average molecular weight is, for example, 2,000 (e.g., melting point 50-60°C) to 16,000 (e.g., melting point 55-65°C). The molecular weight values ​​for polyethylene glycol and copolymers of polyoxyethylene and polyoxypropylene may be measured by known general measurement methods, and the average molecular weight refers to the weight-average molecular weight. While increasing the molecular weight of polyethylene glycol, or a copolymer of polyoxyethylene and polyoxypropylene, improves impact resistance, higher molecular weights tend to increase viscosity when melted, which can lead to manufacturing challenges.

[0017] (B-1) Component is a known substance, readily available on the market, and can also be prepared. The amount of component (B-1) is not particularly limited as long as it is sufficient to achieve the purpose of formulation, but is preferably 5 to 70% by mass, more preferably 10 to 60% by mass, and even more preferably 15 to 50% by mass, relative to the total mass of the solid composition. When the amount of component (B-1) is within the range of 5 to 70% by mass, the amount of elution during washing is not too small, which is more appropriate and can prevent cracking even after repeated washing.

[0018] <(B-2) component> Component (B-2) is a water-insoluble component having a melting point of 50°C or higher. In this specification, "water-insoluble" means that after melting the sample at a temperature sufficient for melting, pouring it into a 2cm square silicone or stainless steel mold, and cooling the resulting cube-shaped solid at a temperature sufficient for solidifying the molten liquid, the amount dissolved when stirred for 10 minutes in 500ml of water at 15°C with a magnetic stirrer (MAGNETIC STIRRER F-626N, manufactured by Tokyo Glass Instruments) at level 4 (equivalent to 600rpm) is less than 0.4g. However, if component (B-2) is a powder raw material, this means that the amount dissolved when 5g is stirred in 500ml of water at 15°C for 10 minutes using a magnetic stirrer (MAGNETIC STIRRER F-626N manufactured by Tokyo Glass Instruments) at level 4 (equivalent to 600rpm) is less than 0.4g. (B-2) Preferably, the component has a solubility amount of 0.2 g or less. Furthermore, component (B-2) is preferably a water-insoluble hydrocarbon group-containing component having a melting point of 50°C or higher. The melting point of component (B-2) is preferably 55°C or higher, more preferably 60°C or higher. The upper limit of the melting point of component (B-2) is not particularly limited, but is preferably 200°C or lower, more preferably 150°C or lower, even more preferably 120°C or lower, even more preferably 100°C or lower, and especially preferably 95°C or lower.

[0019] (B-2) Examples of components include water-insoluble components with a melting point of 50°C or higher, other than compounds selected from fatty acid amides having carbon chains with 16 or more carbon atoms, and higher alcohols having carbon chains with 16 or more carbon atoms. Specifically, these include fatty acids, fatty acid esters, hydrogenated castor fatty acids, hydrogenated castor oil, ethylene glycol fatty acid diesters, polyethylene glycol fatty acid diesters, and natural waxes such as carnauba wax, candelilla wax, rice wax, and sunflower wax. Known components can be used. In component (B-2), the hydrocarbon group in the fatty acid structure may be linear or branched, saturated or unsaturated, and preferably has a chain length of 8 to 24 carbon atoms, more preferably 12 to 24 carbon atoms, and even more preferably 16 to 22 carbon atoms. In component (B-2), the average number of moles of ethylene oxide added to the structures of the ethylene glycol fatty acid diester and polyethylene glycol fatty acid diester is preferably 10 or less, more preferably 5 or less, and even more preferably 2 or less. In component (B-2), the natural wax is composed of a wax component consisting of multiple components such as higher esters, higher fatty acids, higher alcohols, and hydrocarbons, as well as a resin component and other components. Natural wax is preferred because it has high hardness and adhesive properties, which can suppress powder adhesion to clothing.

[0020] Component (B-2) preferably contains one or more natural waxes. Furthermore, when two or more components of (B-2) are used in combination in the solid composition for laundry treatment of the present invention, preferably at least one is a natural wax, and more preferably at least one is a natural wax selected from carnauba wax, candelilla wax, rice wax, and sunflower wax. The amount of natural wax in component (B-2) is preferably 3% by mass or more, more preferably 5% by mass or more, and even more preferably 10% by mass or more, based on the total mass of the solid composition. The upper limit is preferably 25% by mass or less, more preferably 20% by mass or less, and even more preferably 15% by mass or less. (B-2) When two or more components are used in combination, it is more preferable that at least one is a natural wax selected from carnauba wax, candelilla wax, rice wax, and sunflower wax, and at least one is selected from fatty acids, fatty acid esters, hydrogenated castor fatty acids, hydrogenated castor oil, ethylene glycol fatty acid diesters, and polyethylene glycol fatty acid diesters, and even more preferably that at least one is a natural wax selected from carnauba wax, candelilla wax, rice wax, and sunflower wax, and at least one is hydrogenated castor oil. Commercially available products include, but are not limited to, Castor Wax A Flakes (hydrogenated castor oil, melting point 85°C) and hydrogenated castor fatty acid (12-hydroxystearic acid, melting point 64-74°C) manufactured by NOF Corporation, NIKKOL Estepearl 10V (ethylene glycol distearate, melting point 58-65°C) manufactured by Nikko Chemicals, NAA-222 Beads (behenic acid, melting point 74-78°C) manufactured by NOF Corporation, Unistar E-275 (ethylene glycol distearate, melting point approximately 63°C) manufactured by NOF Corporation, Unistar 2222SL (behenyl behenate, melting point 70°C) manufactured by NOF Corporation, and TOWAX1F6 (carnauba wax, melting point 80-86°C) manufactured by Toa Chemicals Co., Ltd.

[0021] Furthermore, component (B-2) may be selected from fatty acid amides having a carbon chain of 16 or more carbon atoms, and higher alcohols having a carbon chain of 16 or more carbon atoms. Known components can be used for these. In such fatty acid amides, the number of carbon atoms in the carbon chain is preferably 16 to 24, more preferably 16 to 22, and even more preferably 18 to 20. In such higher alcohols, the number of carbon atoms in the carbon chain is preferably 16 to 26, more preferably 18 to 24, and even more preferably 18 to 22. Commercially available products include, but are not limited to, NOF Corporation's Alflo P-10 (erucic acid monoamide, melting point 79-84°C), NOF Corporation's Alflo E-10 (oleic acid monoamide, melting point 72-76°C), Nippon Seika Co., Ltd.'s Neutron-2 (oleic acid amide, melting point 70°C), Nippon Seika Co., Ltd.'s BNT-22H (behenic acid amide, melting point 110-113°C), BASF's Lanette 22NF (behenyl alcohol, melting point 65°C), and Fujifilm Wako Pure Chemical Industries, Ltd.'s cetearyl alcohol (melting point 57°C). The component (B-2) may be further selected from aluminum or magnesium-containing inorganic salts such as synthetic hydrotalcite, synthetic aluminum silicate, magnesium aluminometasilicate, magnesium aluminometasilicate, aluminum hydroxide, magnesium hydroxide, aluminum magnesium hydroxide, magnesium silicate, magnesium carbonate, magnesium oxide, and aluminum oxide, or it may be selected from lubricants such as magnesium stearate, calcium stearate, sodium stearyl fumarate, and light anhydrous silicic acid.

[0022] (B-2) Component is preferably one or more selected from hydrogenated castor oil, hydrogenated castor fatty acids, ethylene glycol fatty acid diesters, polyethylene glycol fatty acid diesters, fatty acid amides having carbon chains of 16 or more carbon atoms, and higher alcohols having carbon chains of 16 or more carbon atoms, or natural waxes such as carnauba wax, candelilla wax, rice wax, and sunflower wax, or aluminum or magnesium-containing inorganic salts such as synthetic hydrotalcite, synthetic aluminum silicate, magnesium aluminometasilicate, magnesium silicate, aluminum hydroxide, magnesium hydroxide, magnesium aluminum hydroxide, magnesium silicate, magnesium carbonate, magnesium oxide, and aluminum oxide, or lubricants such as magnesium stearate, calcium stearate, sodium stearyl fumarate, and light anhydrous silicic acid. Component (B-2) more preferably comprises one or more selected from hydrogenated castor oil, hydrogenated castor fatty acids, ethylene glycol fatty acid diesters, polyethylene glycol fatty acid diesters, fatty acid amides having carbon chains of 16 or more carbon atoms, higher alcohols having carbon chains of 16 or more carbon atoms, and natural waxes such as carnauba wax, candelilla wax, rice wax, and sunflower wax, along with at least one of magnesium stearate and calcium stearate; particularly preferably comprises one or more selected from carnauba wax, rice wax, and hydrogenated castor oil, along with magnesium stearate; and most preferably comprises carnauba wax and magnesium stearate. The amount of component (B-2) is not particularly limited as long as it is sufficient to achieve the purpose of the formulation, but is preferably 10 to 99% by mass, more preferably 20 to 80% by mass, and even more preferably 30 to 70% by mass, relative to the total mass of the solid composition. In the solid composition for laundry treatment of the present invention, the mass ratio of component (A) to component (B-2), (A) / (B-2), is preferably 1 or less, more preferably 0.5 or less, and even more preferably 0.2 or less.

[0023] [(C) component] The solid composition for laundry treatment of the present invention may further contain sugars as component (C). By incorporating component (C) into the solid composition for laundry treatment of the present invention, a composition suitable for molding into tablet form can be obtained. Examples of sugars include mannitol, lactose, sucrose, and oligosaccharides, but are not limited to these. An example of an oligosaccharide is cyclodextrin. The amount of component (C) is not particularly limited as long as it is sufficient to achieve the purpose of the formulation, but is preferably 10 to 70% by mass, more preferably 20 to 60% by mass, and even more preferably 25 to 50% by mass, relative to the total mass of the solid composition.

[0024] [Optional ingredients] The solid composition for laundry treatment of the present invention may contain, as necessary, components other than those listed above (A) to (C), provided that the effects of the present invention are not impaired. For example, antibacterial agents, antifungal agents, sugars, deodorants, repellents, ultraviolet absorbers, fluorescent agents, color transfer inhibitors, color fading inhibitors, fiber surface modifiers, re-soiling inhibitors, metal ion scavenging agents (chelating agents), fragrances, silicone compounds, organic acids, colorants, thickeners, devising agents, solubilizers, alkaline agents, antioxidants, preservatives, storage stability enhancers, pearlescent agents, extracts of natural products, etc. These components have the function of imparting the effects of the functional components to the washing machine or the garment being washed during laundry, and are also referred to as "functional components." Note that optional components are not limited to functional components only. The optional components may contain water, an organic solvent, a surfactant other than component (B-1), preferably an organic solvent and a surfactant other than component (B-1), from the viewpoint of handling and ease of incorporation into the solid composition. If the optional components contain water, an organic solvent, and a surfactant other than component (B-1), the content of these components is preferably 90% by mass or less, more preferably 85% by mass or less, and even more preferably 70% by mass or less, based on the total mass of the optional components. These optional components are known substances, readily available on the market, and can also be prepared.

[0025] Antimicrobial agents include: Yotol DP95 (compound name: diiodomethyl-p-tolylsulfone), alkyltrimethylammonium salts with 12-16 carbon atoms (Lion Specialty Chemicals Lipocard C12-37W, Lipocard C50, Lipocard C16Cl salt, Lipocard C16MS salt, etc.), dialkyldimethylammonium salts (Lion Specialty Chemicals Lipocard 210-80E, Lonza CarboquatMW50, etc.), dialkylmethylpolyammonium propionate (Lonza Bardap26, etc.), diclosan (BASF Tinosan HP100, etc.), triclosan, benzalkonium chloride (Lonza BarquatMS100, BarquatMB80, etc.), benzethonium chloride, bis-(2-pyridylthio-1-oxide)zinc, 8-oxyquinoline, biguanide compounds (Lonza Examples include Proxel IB, chlorohexidine hydrochloride, and polylysine.

[0026] Examples of antifungal agents include propynyl iodide butylcarbamate (IPBC, manufactured by LONZA). Examples of deodorizers include methylglycine diacetic acid (MGDA), aspartate diacetic acid (ASDA), isoserine diacetic acid (ISDA), β-alanine diacetic acid (ADAA), serine diacetic acid (SDA), glutamate diacetic acid (GLDA), iminodisuccinic acid (IDS), hydroxyiminodisuccinic acid (HIDS), or salts thereof, zinc fatty acids such as zinc ricinoleate, bentonite, dextrin, calcium lactate, etc. As repellents, known ingredients used in known insect repellents, such as DEET and picaridin, can be applied. As a UV absorber, Parsol 1789 (4-methoxy-4'-tert-butyldibenzoylmethane, manufactured by DSM Nutrition Japan) can be used.

[0027] As a fluorescent agent, 4,4-bis(2-sulfostyryl)biphenyldisodium (Tinopar CBS-X manufactured by BASF) As a base material to prevent color transfer, polyvinylpyrrolidone, As a color-fastening agent, 1,4-bis(3-aminopropyl)piperazine, etc. Examples of fiber surface modifiers include enzymes such as cellulase, amylase, protease, lipase, and keratinase. Examples of anti-redeposition agents include water-soluble polymers having at least one repeating unit selected from the group consisting of alkylene terephthalate units and alkylene isophthalate units, and at least one repeating unit selected from the group consisting of oxyalkylene units and polyoxyalkylene units. Specifically, examples include the trade names "TexCare SRN-100" (manufactured by Clariant, weight-average molecular weight 2000-3000), "TexCare SRN-300" (manufactured by Clariant, weight-average molecular weight 7000), "Repel-O-Tex Crystal" (manufactured by Rhodia), and "Repel-O-Tex QC" (manufactured by Rhodia). Other anti-redeposition agents include alkylene oxide adducts of polyalkyleneimines and alkylene oxide adducts of polyalkyleneamines. Specifically, examples include the trade name "Sokalan HP20" (manufactured by BASF). Examples of metal ion scavenging agents (chelating agents) include malonic acid, succinic acid, malic acid, diglycolic acid, tartaric acid, and citric acid.

[0028] As for fragrances, any known fragrances that can be incorporated into treatment agent compositions for textile products can be used without particular restriction. For example, lists of usable fragrance raw materials are found in various publications, such as "Perfume and Flavor Chemicals", Vol. I and II, Steffen Arctander, Allured Pub. Co. (1994), "Synthetic Fragrances: Chemistry and Product Knowledge", by Motoichi Indo, Chemical Daily Co. (1996), "Perfume and Flavor Materials of Natural Origin", Steffen Arctander, Allured Pub. Co. (1994), "Encyclopedia of Fragrances", edited by the Japan Fragrance Association, Asakura Shoten (1989), "Perfumery Material Performance V.3.3", Boelens Aroma Chemical Information Service (1996), and "Flower oils and Floral Compounds In Perfumery", Danute Lajaujis Anonis, Allured Pub. Co. (1993). The amount of fragrance added is not particularly limited as long as it is sufficient to achieve the intended purpose, but it is preferably less than 10% by mass of the total mass of the solid composition for laundry treatment.

[0029] The molecular structure of the silicone compound may be linear, branched, or crosslinked. The silicone compound may also be a modified silicone compound, and the modified silicone compound may be modified with one organic functional group or with two or more organic functional groups. Silicone compounds can be used in oil form, or in emulsion form dispersed with any emulsifier. Specific examples of silicones include dimethyl silicone, polyether-modified silicone, methylphenyl silicone, alkyl-modified silicone, higher fatty acid-modified silicone, methyl hydrogen silicone, fluorine-modified silicone, epoxy-modified silicone, carboxy-modified silicone, carbinol-modified silicone, and amino-modified silicone. For example, polyoxyethylene-modified silicone (SH3775M, manufactured by Toray Dow Corning) can be used. The amount of silicone added is not particularly limited as long as it is sufficient to achieve the intended purpose, but it is preferably less than 10% by mass relative to the total mass of the solid composition for laundry treatment.

[0030] Examples of organic acids include succinic acid, fumaric acid, malic acid, adipic acid, tartaric acid, benzoic acid, citric acid, pyrrolidone carboxylic acid, salicylic acid, maleic acid, phthalic acid, glutaric acid, and oxalic acid. Examples of colorants include general-purpose dyes and pigments such as Acid Red 138, Polar Red RLS, Acid Yellow 203, Acid Blue 9, Blue No. 1, Blue No. 205, Green No. 3, Red No. 106, Yellow No. 203, and Turquoise P-GR (all are brand names). The amount of colorant is not particularly limited as long as it is sufficient to achieve the intended purpose of the formulation, but it is preferably 0.00005 to 0.005% by mass relative to the total mass of the solid composition for laundry treatment.

[0031] If these optional components are in granular form, their particle size is preferably 800 μm or less, more preferably 500 μm or less, and even more preferably 200 μm or less. The optional component may be a single type or a combination of multiple types. The amount of optional components is 5 to 60% by mass, preferably 5 to 50% by mass, more preferably 5 to 40% by mass, even more preferably 5 to 30% by mass, and particularly preferably 5 to 20% by mass, based on the total mass of the solid composition. Similarly, the amount of functional components is 5 to 60% by mass, preferably 5 to 50% by mass, more preferably 5 to 40% by mass, even more preferably 5 to 30% by mass, and particularly preferably 5 to 20% by mass, based on the total mass of the solid composition. When the optional component is a liquid, the amount of the liquid optional component relative to the total mass of the solid composition is preferably 40% by mass or less, more preferably 30% by mass or less, even more preferably 25% by mass or less, and particularly preferably 20% by mass or less.

[0032] [Manufacturing method] The method for producing the solid laundry composition of the present invention is not particularly limited. It can be produced by heating each component above its melting point to melt it, mixing the mixture, pouring it into a mold, and cooling it until it solidifies. For example, the solid laundry composition of the present invention can be produced by heating each component to 90°C or higher to melt it, mixing it with any component at a predetermined concentration, pouring it into a mold, and cooling it to room temperature (25°C).

[0033] <Tablet Manufacturing Method> The solid composition for laundry treatment of the present invention can be in the form of a tablet. Hereinafter, the solid composition for laundry treatment in the form of a tablet will be referred to as the tablet composition. The tablet composition can be obtained, for example, by compressing a mixture obtained by mixing component (A), component (B), component (C), and any optional component as needed into tablets. One method of tablet production is to use a tablet press equipped with a die and a punch to perform tableting (compression molding). The tableting conditions are not particularly limited, but the tableting pressure is preferably 20 to 100 kN, and more preferably 40 to 60 kN.

[0034] <shape> The shape of the tablet composition is not particularly limited, but examples include a shape having a cylindrical portion, a shape having a rectangular prism portion, and so on.

[0035] If the tablet composition has a cylindrical shape, the tablet composition may consist only of the cylindrical shape, or it may have a cylindrical shape and bulging parts that protrude above and below the cylindrical shape.

[0036] When the tablet composition has a cylindrical portion and a bulging portion, examples of such tablet compositions include square-shaped tablets, round-shaped tablets, R tablets (standard R tablets), and two-tiered R tablets. Among these, square-shaped tablets and R tablets are preferred. The bulges of these tablets may be asymmetrical vertically, but it is preferable that they be symmetrical vertically.

[0037] Figure 1 is a side view showing an example of a tablet composition 10 in the shape of a square-shaped tablet. The tablet composition 10 in this example is a double-convex tablet having a cylindrical portion 11, a first bulge portion 12, and a second bulge portion 13. The diameter of the cylindrical portion 11, that is, the diameters of the top and bottom surfaces of the cylindrical portion 11, is preferably 15.1 mm or more, more preferably 20 to 50 mm, and even more preferably 25 to 35 mm. If the diameter of the cylindrical portion 11 is above the lower limit, accidental ingestion can be prevented more effectively. If the diameter of the cylindrical portion 11 is below the upper limit, it can be dissolved uniformly and slowly until the end. The first bulge 12 rises linearly from near the periphery of one end face of the cylindrical portion 11 toward the center of the said end face at a predetermined rising angle θ, so that any region including the zenith 12A becomes a plane. The second bulge 13 rises linearly from near the periphery of the other end face of the cylindrical portion 11 toward the center of the other end face at a predetermined rising angle θ, so that any region including the zenith 13A becomes a plane. The rising angle θ at the first bulge 12 and the rising angle θ at the second bulge 13 may be the same or different, but from the viewpoint of tablet strength, it is preferable that they be the same. The thickness H1 of the tablet composition 10, that is, the sum of the thickness of the cylindrical portion 11 and the maximum thickness of the first bulge portion 12 and the second bulge portion 13, is preferably 5 to 20 mm, more preferably 8 to 17 mm, and even more preferably 12 to 16 mm. The tablet composition 10 shown in Figure 1 has an annular horizontal surface (land portion 14) on the outer circumference of the first bulge 12 in plan view, and an annular horizontal surface (land portion 15) on the outer circumference of the second bulge 13 in plan view. However, for example, it may not have a land portion, and the tablet periphery and the bulge rising portion may be in contact.

[0038] Figure 2 is a side view showing an example of a tablet composition 20 having the shape of an R tablet. The tablet composition 20 in this example is a biconvex tablet having a cylindrical portion 21, a first bulge 22, and a second bulge 23, wherein the radius of curvature R of the curves on the surfaces of the first bulge 22 and the second bulge 23 is constant regardless of the position on the surface of the bulge. The diameter of the cylindrical portion 21, that is, the diameters of the top and bottom surfaces of the cylindrical portion 21, is the same as the diameter of the cylindrical portion 11 of the tablet composition 10 shown in Figure 1. The first bulge 22 bulges out from near the periphery of one end face of the cylindrical portion 21 toward the center of that end face. The second bulge 23 bulges out from near the periphery of the other end face of the cylindrical portion 21 toward the center of that other end face. Here, "radius of curvature of the curve on the surface of the first bulge 22" refers to the radius of the circle when the curve traced by the surface of the first bulge 22 is considered as part of a circle in a cross-section obtained by cutting the cylindrical portion 21 perpendicular to the end face so as to pass through the zenith 22A. The "radius of curvature of the curve on the surface of the second bulge 23" refers to the radius of the circle when the curve traced by the surface of the second bulge 23 is considered as part of a circle in a cross-section obtained by cutting the cylindrical portion 21 perpendicular to the end face so as to pass through the zenith 23A. The zenith 22A of the first bulge 22 is the point that is highest relative to one end face. The zenith 23A of the second bulge 23 is the point that is lowest relative to the other end face. The radius of curvature R of the first bulge 22 and the radius of curvature R of the second bulge 23 may be the same or different, but from the viewpoint of tablet strength, it is preferable that they be the same. The thickness H2 of the tablet composition 20, that is, the sum of the thickness of the cylindrical portion 21 and the maximum thickness of the first bulge portion 22 and the second bulge portion 23, is preferably 5 to 20 mm, more preferably 8 to 17 mm, and even more preferably 12 to 16 mm. The tablet composition 20 shown in Figure 2 has an annular horizontal surface (land portion 24) on the outer circumference of the first bulge portion 22 in plan view, and an annular horizontal surface (land portion 25) on the outer circumference of the second bulge portion 23 in plan view. However, for example, it may not have a land portion, and the tablet periphery and the bulge portion may be in contact.

[0039] If the tablet composition consists only of a cylindrical portion, the diameter of the cylindrical portion is the same as the diameter of the cylindrical portion 11 of the tablet composition 10 shown in Figure 1. Furthermore, the height of the cylindrical portion, that is, the thickness of the tablet composition consisting only of the cylindrical portion, is preferably 5 to 20 mm, more preferably 8 to 17 mm, and even more preferably 12 to 16 mm. A tablet composition consisting only of a cylindrical portion may be flattened. In the case of a flattened shape, the aspect ratio (diameter of the cylindrical portion / height H of the cylindrical portion) is preferably 1 to 10, more preferably 1.2 to 5, and even more preferably 1.5 to 2.5.

[0040] Furthermore, if the tablet composition consists only of a cylindrical portion, a recess may be provided on the surface of the cylindrical portion, specifically at least one of the top and bottom surfaces of the cylindrical portion. Figure 3(a) is a perspective view showing an example of a tablet composition 30 having a shape with recesses on its surface, and Figure 3(b) is a cross-sectional view of the tablet composition 30 along the line A-A'. The tablet composition 30 shown in Figure 3 consists only of a cylindrical portion 31, with a recess 32 provided in the center of the top surface 31a of the cylindrical portion 31. Furthermore, the cross-sectional shape of the tablet composition 30 along the thickness H3 direction is rectangular, and its four corners are rounded off with circular arcs. In the illustrated example, the tablet composition 30 has a flat top and bottom surface, but at least one of the top and bottom surfaces may be curved.

[0041] The diameter of the cylindrical portion 31, i.e., the diameters of the top surface 31a and the bottom surface 31b, is preferably 15.1 mm or more, more preferably 20 to 50 mm, and even more preferably 25 to 35 mm. If the diameters of the top surface 31a and the bottom surface 31b are above the lower limit, accidental ingestion can be further prevented. If the diameters of the top surface 31a and the bottom surface 31b are below the upper limit, the product can be dissolved uniformly until the end.

[0042] The thickness H3 of the tablet composition 30, that is, the thickness of the cylindrical portion 31, is not particularly limited, but is preferably 5 to 20 mm, more preferably 8 to 17 mm, and even more preferably 12 to 16 mm.

[0043] The depth h of the recess 32 is preferably 20-40% of the thickness H3 of the tablet composition 30, and more preferably 25-35%. If the depth h of the recess 32 is greater than or equal to the lower limit, the hardness of the tablet composition 30 will be higher. If the depth h of the recess 32 is less than or equal to the upper limit, the tablet can be easily compressed. The diameter d of the opening of the recess 32 is preferably 5 to 25 mm, more preferably 7 to 20 mm, and even more preferably 15 to 20 mm. In the illustrated example, the shape of the opening of the recess 32 is circular, but the shape of the opening of the recess 32 is not particularly limited and may be polygonal or elliptical. The volume of the recess 32 is preferably 5 to 25% of the volume of the tablet composition 30, and more preferably 10 to 20%. If the volume of the recess 32 is above the lower limit, the slow dissolution rate of the tablet composition 30 is further improved. If the volume of the recess 32 is below the upper limit, the hardness of the tablet composition 30 is further increased. The recess 32 may be formed in a spiral shape toward its center.

[0044] If the tablet composition has a prismatic shape, the tablet composition may consist only of the prismatic shape, or it may have a prismatic shape and bulging parts that protrude above and below the prismatic shape. Furthermore, if the tablet composition consists only of a prismatic portion, a recess may be provided on the surface of the prismatic portion, specifically at least one of the top and bottom surfaces of the prismatic portion.

[0045] Examples of tablet compositions having a prismatic shape include those in which the cylindrical portion of a tablet composition is replaced with a prismatic portion. The diameter of the circumscribed circle of the top or bottom surface of the prism is preferably 15.1 mm or more, more preferably 20 to 50 mm, and even more preferably 25 to 35 mm. If the diameter of the circumscribed circle of the top or bottom surface of the prism is greater than or equal to the lower limit above, accidental ingestion can be further prevented. If the diameter of the circumscribed circle of the top or bottom surface of the prism is less than or equal to the upper limit above, it can be dissolved uniformly until the end. The shape of the top or bottom surface of the prism is not particularly limited as long as it is a polygon, but examples include triangles, quadrilaterals, pentagons, hexagons, heptagons, octagons, star polygons, etc.

[0046] As for the shape of the tablet composition, a cylindrical shape is preferred, and from the viewpoint of increasing the hardness of the tablet composition, a shape having a cylindrical shape and a bulging part, a shape in which a recess is provided on at least one of the top and bottom surfaces of the cylindrical part is more preferred, a square-shaped tablet, a shape in which a recess is provided on at least one of the top and bottom surfaces of the cylindrical part is even more preferred, and a shape in which a recess is provided on at least one of the top and bottom surfaces of the cylindrical part is particularly preferred.

[0047] <Mass> The mass per tablet formulation is preferably 1.5 g or more, more preferably 2 to 20 g, and even more preferably 10 to 15 g. If the mass per formulation is above the lower limit, accidental ingestion can be better prevented. If the mass per formulation is below the upper limit, the hardness of the tablet formulation will be higher.

[0048] [How to use] The solid composition for laundry treatment of the present invention can be used as is, or contained in a container, tool, or bag. For example, the solid composition for laundry treatment of the present invention can be placed inside commercially available laundry items such as laundry balls or laundry nets, and then placed in a washing machine together with the items to be washed. For example, as a laundry ball, the outer container portion of the Eco Laundry Ball manufactured by Ihara Kikaku, with the tourmaline contents removed, can be used, and as a laundry net, the Umi. Laundry Net manufactured by Diyouth can be used. If the solid composition for laundry treatment of the present invention dissolves completely or almost completely during washing, these laundry items can be reused by separately containing the solid composition. Laundry balls, laundry nets, and other laundry items containing the solid composition for laundry treatment of the present invention may be placed in the washing machine beforehand, or placed on top of the laundry after it has been placed in the machine. They may remain in the washing machine throughout all stages of the process, including filling with water, washing, draining, rinsing, spinning, and (depending on the washing machine) drying. After the washing is finished and the laundry is removed from the washing machine, the laundry balls, laundry nets, and other laundry items containing the solid composition for laundry treatment of the present invention may be left in the washing machine and can be used as is for the next wash. [Examples]

[0049] The present invention will be described in more detail below with reference to examples, but the present invention is not limited thereto. In the examples, all component amounts are expressed in mass % (on a pure content basis unless otherwise specified).

[0050] [(A) component] • A-1: ​​MICRO DRY 3115 (Aluminum Chlorohydrate, manufactured by Summit Research Labs, Inc.) A-2: Aluminum chloride (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) A-3: Aluminum potassium sulfate (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) A-4: Paraphenolsulfonic acid (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.)

[0051] [(B) Component] ·B-1-1: Brownon SR-720 (Polyoxyethylene stearyl ether (20), melting point 47℃, solubility 0.6g, manufactured by Aoki Oil Co., Ltd.) • B-1-2: Polyethylene glycol 6000 (manufactured by Sanyo Chemical Industries, Ltd., melting point 55℃, solubility 1.0g, aqueous lubricant) • B-2-1: Castor Wax A Flakes (Hydrogenated Castor Oil, Melting Point 85°C, Dissolving Capacity 0.1g, Manufactured by NOF Corporation) • B-2-2: TOWAX1F6 (Carnauba wax, melting point 80-86°C, dissolving amount 0.1g, manufactured by Toa Kasei Co., Ltd.) • B-2-3: Lanette 22NF (Behenyl alcohol, melting point 65°C, solubility 0.1g, manufactured by BASF) • B-2-4: Magnesium aluminometasilicate (dissolved amount 0.05g, manufactured by Fuji Chemical Industry Co., Ltd.) • B-2-5: Magnesium stearate (product name "Light Magnesium Stearate", melting point 140℃, solubility 0.03g, manufactured by Taihei Chemical Industry Co., Ltd.) In the above (B-1-1), (B-1-2), (B-2-1), (B-2-2), and (B-2-3), the amount of solubility is determined when the sample is melted at a temperature sufficient for melting, poured into a 2cm square silicone or stainless steel mold, and cooled and solidified into a cube shape at 25°C. This cube-shaped solid is then stirred for 10 minutes at 15°C in 500ml of water using a magnetic stirrer (MAGNETIC STIRRER F-626N, manufactured by Tokyo Glass Instruments) at level 4. In the above (B-2-4) and (B-2-5), the amount of solution is obtained by stirring 5g in 500ml of water at 15°C for 10 minutes using a magnetic stirrer (MAGNETIC STIRRER F-626N manufactured by Tokyo Glass Instruments) at level 4.

[0052] [(C) component] • C-1: Lactose (manufactured by Freund Industrial Co., Ltd.) • C-2: Mannitol (manufactured by Freund Industrial Co., Ltd.) • C-3: Sucrose (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) • C-4: Oligosaccharide (cyclodextrin, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.)

[0053] [Optional ingredients] • Chinosan HP100 (30% 5-chloro-2-(4-chlorophenoxy)phenol, 70% propylene glycol) • Fragrance (Free fragrance composition D-1 as described in the examples of Japanese Patent Publication No. 2021-4418)

[0054] [Method for preparing solid compositions for laundry processing] <Method for preparing wax> Each component was melted at a temperature sufficient to dissolve it, and then mixed at a predetermined concentration. The solid composition for laundry treatment was prepared by mixing all components except component (A), which had been heated to over 90°C and melted. The mixture was then stirred for 5 minutes while adding component (A) at 7500 ppm using a homogenizer (PT-MR10-35GT, manufactured by Polytron, Inc., or a generator shifter PT-DA36 / 4EC-F250). The mixture was then poured into a silicone, stainless steel, or aluminum mold with a diameter of 3 cm and a height of 4 cm, and cooled to a temperature sufficient to solidify, thereby producing a 20 g cylindrical solid composition. The composition of the prepared solid composition for laundry treatment is shown in Tables 1 and 2 below. Comparative Example 1 used 25g of component A-1, aluminum chlorohydrate (powder), placed in a nonwoven fabric bag (DF7R-70, manufactured by Yamato Spinning Co., Ltd.) measuring approximately 8cm x 10cm.

[0055] <Method for preparing tablets> According to the composition in Table 3, component (B-2-4) was placed in a high-speed mixer (Fukae Powtech B243), and while stirring at a rotation speed of 300 rpm, the optional components were added dropwise to form particle group (A) (first mixing step). Component (B-2-2) and component (B-2-5) were added to particle group (A) and stirred, and then component (A) and component (C) were added and stirred to obtain a mixed powder (second mixing step). The mixed powder was compressed using a tablet press (Fuji Pharmaceutical Machinery Co., Ltd., FY-TPF-100S) at a tableting pressure of 50 kN to obtain cylindrical tablets (corner-shaped flat tablets, 30 mm in diameter, 15 mm in height, 12 g) for each example.

[0056] [Method for evaluating solid compositions] <Deodorizing effect (for clothes dried indoors)> 1. Preparation of evaluation cloth Five bath towels and face towels that had a musty smell from being dried indoors were each cut into eight equal parts. These were then sprayed with water to make them moderately damp, placed in plastic bags, and stored at 30°C and 75% RH for three days to be used as the test fabric. For each of the eight divided bath towels, nine sprays of water were applied to each side. For each of the eight divided face towels, five sprays of water were applied to each side.

[0057] 2. Washing process The evaluation fabric was placed in a Haier compact automatic washing machine along with each solid composition prepared as described above, contained in a protective container (Eco Laundry Ball, manufactured by Ihara Kikaku). It was then washed for 32 minutes on a standard cycle (12 minutes wash, 2 rinses, 5 minutes spin dry) using 5g of detergent (NANOX one Odor-Specific), 5g of fabric softener (Soflan Premium Deodorizing Floral Aroma Scent), and 10g of bleach (Bright STRONG Bleach & Antibacterial Gel) at a low water level (15L tap water, 20x water ratio). For the blank, the evaluation fabric was washed using the same detergent, fabric softener, and bleach as described above, except that the solid compositions contained in the protective container were not used. After washing, the towels were left in a constant temperature bath at 25°C and 100% RH for 5.5 hours. The odor after drying was evaluated using a 6-point odor intensity method and Scheffé's paired comparison (Nakaya's modified method). The evaluation was conducted by 7 people, comparing the case using the solid composition contained in a protective container with the blank using the Scheffé method. The criterion was how many people judged that the case using the solid composition contained in the protective container was better than the blank for the average of 5 towels. The results are shown in the "Deodorizing Effect" column in Tables 1-3 below. (Evaluation Criteria) ◎:7 people ○:6 people △:5 people ×: 4 people or less

[0058] <Slowly soluble> Each solid composition prepared as described above was placed in a protective container (Eco Laundry Ball, manufactured by Ihara Kikaku) and placed in a Toshiba top-loading washing machine (AW-8V9). The washing cycle was run on a standard setting for approximately 40 minutes, and the change in weight of the solid composition before and after washing was defined as the amount slowly dissolved. The washing cycle was repeated 10 times, and the average amount slowly dissolved was calculated from the amounts slowly dissolved over 10 cycles. The average amount slowly dissolved was evaluated based on the evaluation criteria described below. The results are shown in the "Slow Dissolving Properties" column in Tables 1-3 below. (Evaluation Criteria) ◎: 0.6~2.0g or less ○: Less than 0.4-0.6g, or more than 2.0g to 2.5g △: Less than 0.2-0.4g, or more than 2.5g up to 5.0g ×: Less than 0.2g or more than 5.0g

[0059] [Table 1]

[0060] [Table 2]

[0061] [Table 3]

Claims

1. (A) at least one compound selected from aluminum chlorohydroxy, aluminum chloride, potassium aluminum sulfate, and paraphenolsulfonic acid, (B) At least one compound selected from component (B-1) and component (B-2) having a melting point of 25°C or higher. (B-1) At least one compound selected from water-soluble nonionic surfactants, polyethylene glycol, and copolymers of polyoxyethylene and polyoxypropylene. (B-2) Water-insoluble components with a melting point of 50°C or higher A solid composition for laundry processing containing the following:

2. The solid composition for laundry treatment according to claim 1, wherein component (B) comprises one or more components (B-1) and one or more components (B-2).

3. (A) The solid composition for laundry treatment according to claim 1, containing 1 to 30% by mass of component (A).

4. (A) The solid composition for laundry treatment according to claim 1, wherein component (A) is aluminum chlorohydrate.

5. (C) At least one type of sugar A solid composition for laundry treatment according to any one of claims 1 to 4, further containing the above, in the form of a tablet.

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