Solid composition for laundry treatment

Abstract

To provide a solid composition for laundry treatment enabling suppression of base agent adhesion to clothes and / or achievement of a predetermined dissolution amount, while containing functional components or the like in a certain amount or more.SOLUTION: A solid composition for laundry treatment includes (A) one or more water-soluble components having a melting point of 25°C or more and 120°C or less, and (B) two or more water-insoluble components having a melting point of 50°C or more. The total content of the component (A) and the component (B) is 40 to 95 mass%.SELECTED DRAWING: None

Description

Technical Field

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

Background Art

[0002] Regarding the slow dissolution technology, technologies related to solid compositions considering slow dissolution, heat resistance, and impact resistance during washing and drying 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, when increasing the blending amount of components other than those related to slow dissolution in order to impart functions (such as antibacterial and deodorant properties), in the prior art, it has been newly found that it is difficult to ensure the desired slow dissolution for use in a washing machine, and problems of base adhesion to clothing also occur. Therefore, an object of the present invention is to provide a solid composition for laundry treatment that contains a certain amount or more of components such as functional components, while suppressing base adhesion to clothing and / or achieving a certain slow dissolution amount.

Means for Solving the Problems

[0005] As a result of intensive studies, the present inventors have found that by using a water-soluble component and two or more kinds of components having a high melting point and being hardly soluble in water in combination, even when blending 5% by mass or more of other components such as functional components, a solid composition can be provided that suppresses base adhesion to clothing and can achieve a certain slow dissolution amount.

[0006] The present invention relates to, for example, the following [1] to [3]. [1] (A) One or more water-soluble components having a melting point of 25°C or higher and 120°C or lower, and (B) Two or more water-insoluble components having a melting point of 50°C or higher A solid composition for laundry treatment, containing the components (A) and (B) in a total amount of 40 to 95% by mass. [2] The solid composition for laundry treatment according to [1] above, wherein the component (A) contains at least one compound selected from water-soluble nonionic surfactants, polyethylene glycols, and copolymers of polyoxyethylene and polyoxypropylene, having a melting point of 25°C or higher and 120°C or lower. [3] The component (B) is One or more water-insoluble components having a melting point of 50°C or higher, other than compounds 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, and One or more water-insoluble components having a melting point of 50°C or higher, which are compounds 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, and Or Two or more water-insoluble components having a melting point of 50°C or higher, other than compounds 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 The solid composition for laundry treatment according to [1] or [2] above, containing the same. [4] The component (B) is Two or more water-insoluble components having a melting point of 50°C or higher, other than compounds 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, and One or more water-insoluble components having a melting point of 50°C or higher, which are compounds 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 Containing At least one of the components (B-1) is a natural wax, and the content of the natural wax is 5% by mass or more based on the solid composition for washing treatment. The solid composition for washing treatment according to [1] or [2] above, wherein the mass ratio of the natural wax to the component (B-2) is 1 or more. [Advantages of the Invention]

[0007] According to one aspect of the present invention, even when 5% by mass or more of other components such as functional components are blended, a solid composition for washing treatment having a slow solubility suitable for washing can be provided. According to one aspect of the present invention, even when 5% by mass or more of other components such as functional components are blended, a solid composition for washing treatment that suppresses the adhesion of the base to clothing can be provided. According to one aspect of the present invention, even when 5% by mass or more of other components such as functional components are blended, a solid composition for washing treatment that suppresses the adhesion of the base to clothing and has a slow solubility suitable for washing can be provided. [Embodiments for Carrying Out the Invention]

[0008] In the present specification, the "solid composition for washing treatment" means a solid composition used in washing treatment.

[0009] [Component (A)] In the solid composition for washing treatment of the present invention, by blending the component (A), appropriate slow solubility can be achieved. The component (A) is one or more water-soluble components having a melting point of 25°C or higher and 120°C or lower. Preferably, the component (A) contains at least one compound selected from water-soluble nonionic surfactants, polyethylene glycols, and copolymers of polyoxyethylene and polyoxypropylene having a melting point of 25°C or higher and 120°C or lower. As used herein, "water-soluble" means that after melting the sample at a temperature sufficient to melt it, pouring it into a 2 cm square silicon mold or stainless steel mold, and solidifying the melt at a temperature sufficient to solidify it into a cube-shaped solid, when stirred in 500 ml of water at 15°C 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 dissolves. The melting point of component (A) is preferably 30°C to 120°C, more preferably 35°C to 115°C.

[0010] As the water-soluble nonionic surfactant, preferably, a surfactant containing a polyoxyalkylene chain is mentioned. This polyoxyalkylene chain is preferably a polyoxyethylene chain. Known water-soluble nonionic surfactants can be used. For example, polyoxyethylene alkyl ether, polyoxyethylene fatty acid ester, derivatives of polyethylene glycol, derivatives of copolymers of polyoxyethylene and polyoxypropylene, polyoxyethylene hydrogenated castor oil, polyoxyethylene alkyl phenyl ether, polyoxyethylene alkylamine, polyoxyethylene fatty acid diester, polyoxyethylene lanolin ether, polyoxyethylene polyhydric alcohol ether, etc. are mentioned. Among them, the water-soluble nonionic surfactant is preferably polyoxyethylene alkyl ether, polyoxyethylene fatty acid ester, derivatives of copolymers of polyoxyethylene and polyoxypropylene, and more preferably polyoxyethylene alkyl ether.

[0011] 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 the copolymer of polyoxyethylene and polyoxypropylene, known ones can be used, and its average molecular weight is, for example, 1,000 to 8,000. The values of the molecular weights in derivatives of polyethylene glycol and derivatives of copolymers of polyoxyethylene and polyoxypropylene may be measured by known general measurement methods, and the average molecular weight means the weight average molecular weight. Derivatives of polyethylene glycol and derivatives of copolymers of polyoxyethylene and polyoxypropylene include, 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.

[0012] When the water-soluble nonionic surfactant is a compound having ethylene oxide (EO) added to its structure, such as polyoxyethylene alkyl ether, polyoxyethylene fatty acid ester, and derivatives of copolymers of polyoxyethylene and polyoxypropylene, the average number of moles of EO added is preferably 2 to 60, more preferably 10 to 60, and still more preferably 20 to 50. When the water-soluble nonionic surfactant is a compound containing propylene oxide (PO) in its structure, such as derivatives of copolymers of polyoxyethylene and polyoxypropylene, the average number of moles of PO added is preferably 1 to 30, more preferably 5 to 20, and still more preferably 10 to 15. When the water-soluble nonionic surfactant is a compound containing an alkyl group in its structure, such as 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 still more preferably 16 to 20 carbon atoms. When the water-soluble nonionic surfactant is a compound containing a hydrocarbon group derived from a fatty acid in its structure, such as 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 still more preferably 16 to 20 carbon atoms. Such a hydrocarbon group derived from a fatty acid may be saturated or unsaturated. The HLB value of the water-soluble nonionic surfactant is not particularly limited, but is preferably from 4 to 20, more preferably from 15 to 18.

[0013] Examples of commercially available water-soluble nonionic surfactants include the Bronon series manufactured by Aoki Yushi Kogyo Co., Ltd., specifically, Bronon SR-720 (polyoxyethylene stearyl ether (20), melting point 47 °C), Bronon SR-702 (polyoxyethylene stearyl ether (2), melting point 30 °C), Bronon SR-750 (polyoxyethylene stearyl ether (50), melting point 58 °C), Bronon CH-320L (polyoxyethylene cetyl ether (20), melting point 40 °C), Bronon CH-340F (polyoxyethylene cetyl ether (40), melting point 42 °C), Bronon RCW60 (polyoxyethylene hydrogenated castor oil, melting point 30 - 34 °C), Emaloon CH-60 manufactured by Kao Corporation (polyoxyethylene hydrogenated castor oil, melting point 31 °C), Newpole T240-U manufactured by Sanyo Chemical Industries, Ltd. (modified polyether, melting point 58 °C), etc., but are not limited thereto.

[0014] As the polyethylene glycol, known ones can be used. The average molecular weight of the polyethylene glycol is, for example, from 2,000 (for example, melting point 50 - 53 °C) to 20,000 (for example, melting point 61 - 65 °C), preferably from 6,000 (for example, melting point 60 - 63 °C) to 20,000, more preferably from 10,000 (for example, melting point 61 - 63 °C) to 20,000. As the copolymer of polyoxyethylene and polyoxypropylene, known ones can be used. Its average molecular weight is, for example, from 2,000 (for example, melting point 50 - 60 °C) to 16,000 (for example, melting point 55 - 65 °C). The molecular weight values in the polyethylene glycol and the 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. When the molecular weight of polyethylene glycol or a copolymer of polyoxyethylene and polyoxypropylene increases, the impact resistance improves. On the other hand, when the molecular weight is high, the viscosity when melted tends to increase, which may cause problems in manufacturing.

[0015] Component (A) is a known substance, which is easily available on the market and can also be prepared. The blending amount of component (A) is not particularly limited as long as it can achieve the blending purpose, but it is preferably 5 to 70% by mass, more preferably 10 to 60% by mass, and still more preferably 15 to 50% by mass based on the total mass of the solid composition. When the blending amount of component (A) is within the range of 5 to 70% by mass, the amount of slow dissolution during washing does not become too small and is within a more appropriate range, and cracking can be prevented even when washing is repeated.

[0016] [Component (B)] In the solid composition for laundry treatment of the present invention, appropriate slow solubility can be provided by blending component (B). Component (B) is two or more water-insoluble components having a melting point of 50°C or higher. In this specification, "water-insoluble" means that after melting a sample at a temperature sufficient to melt it, pouring it into a 2 cm square silicon mold 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, the amount dissolved when stirred with a magnetic stirrer (MAGNETIC STIRRER F-626N manufactured by Tokyo Glass Kikai Co., Ltd.) at level 4 (corresponding to 600 rpm) in 15°C, 500 ml of water for 10 minutes is less than 0.4 g. As component (B), preferably, the component has a dissolved amount of 0.2 g or less. Also, component (B) is preferably a water-insoluble hydrocarbon group-containing component having a melting point of 50°C or higher. The melting point of component (B) is preferably 55°C or higher, more preferably 60°C or higher. (B) component's upper limit of melting point is not particularly limited, but preferably 200 °C or lower, more preferably 150 °C or lower, still more preferably 120 °C or lower, even more preferably 100 °C or lower, and particularly preferably 95 °C or lower.

[0017] In the solid composition for laundry treatment of the present invention, two or more (B) components are required, and other than compounds 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, two or more water-insoluble components ((B-1) components) having a melting point of 50 °C or higher may be used. Alternatively, the (B) component may be two or more water-insoluble components ((B-2) components) having a melting point of 50 °C or higher, which are compounds 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, and one or more (B-1) components and one or more (B-2) components may be used. (B) component preferably contains one or more (B-1) components and one or more (B-2) components, or contains two or more (B-1) components. (B) component more preferably contains two or more (B-1) components and one or more (B-2) components.

[0018] <(B-1) component> Specific examples of the (B-1) component include fatty acids, fatty acid esters, hydrogenated castor oil, 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. These are publicly known and can be used. In the (B-1) component, in the structure of the fatty acid, the hydrocarbon group may be linear or branched, saturated or unsaturated, preferably having a chain length of 8 to 24 carbon atoms, more preferably 12 to 24 carbon atoms, and still more preferably 16 to 22 carbon atoms. In the (B-1) component, in the structure of ethylene glycol fatty acid diester and polyethylene glycol fatty acid diester, the average number of moles of ethylene oxide added is preferably 10 or less, more preferably 5 or less, and still more preferably 2 or less. (In the component (B-1), the natural wax is composed of a wax component composed of a plurality of components such as higher esters, higher fatty acids, higher alcohols, and hydrocarbons, a resin component, and other components. The natural wax has adhesiveness and makes it easier for fine particles of water-insoluble components that cause powder adhesion to bind to each other. As a result, it is considered that the particle size of the particles containing water-insoluble components becomes larger, the particles are less likely to entangle with clothing fibers, and adhesion to clothing can be suppressed.)

[0019] (The component (B-1) preferably contains one or more natural waxes. When two or more kinds of the component (B-1) are used in combination in the solid composition for laundry treatment of the present invention, preferably, at least one kind is a natural wax, and more preferably, at least one kind is a natural wax selected from carnauba wax, candelilla wax, rice wax, and sunflower wax. The blending amount of the natural wax in the component (B-1) is preferably 3% by mass or more, more preferably 5% by mass or more, and still more preferably 10% by mass or more with respect to the total mass of the solid composition. The upper limit value is preferably 25% by mass or less, more preferably 20% by mass or less, and still more preferably 15% by mass or less.) (When two or more kinds of the component (B-1) are used in combination, more preferably, at least one kind is a natural wax selected from carnauba wax, candelilla wax, rice wax, and sunflower wax, and at least one kind is selected from fatty acids, fatty acid esters, hydrogenated castor oil, hydrogenated castor oil, ethylene glycol fatty acid diesters, and polyethylene glycol fatty acid diesters, and even more preferably, at least one kind is a natural wax selected from carnauba wax, candelilla wax, rice wax, and sunflower wax, and at least one kind is hydrogenated castor oil.)

[0020] Examples of commercially available products of the (B-1) component include Custom Wax A Flakes manufactured by NOF Corporation (castor hardened oil, melting point 85°C), castor hardened fatty acid manufactured by NOF Corporation (12-hydroxystearic acid, melting point 64 - 74°C), NIKKOL Estepal 10V manufactured by Nikko Chemicals Co., Ltd. (ethylene glycol distearate, melting point 58 - 65°C), NAA-222 beads manufactured by NOF Corporation (behenic acid, melting point 74 - 78°C), Unister E-275 manufactured by NOF Corporation (ethylene glycol distearate, melting point approximately 63°C), Unister 2222SL manufactured by NOF Corporation (behenyl behenate, melting point 70°C), TOWAX 1F6 manufactured by Toagosei Co., Ltd. (carnauba wax, melting point 80 - 86°C), etc., but are not limited thereto.

[0021] <(B-2) component> The (B-2) component is 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, and known ones can be used. In the (B-2) component, the number of carbon atoms in the carbon chain of the fatty acid amide is preferably 16 - 24, more preferably 16 - 22, and still more preferably 18 - 20. In the (B-2) component, the number of carbon atoms in the carbon chain of the higher alcohol is preferably 16 - 26, more preferably 18 - 24, and still more preferably 18 - 22.

[0022] Examples of commercially available products of the (B-2) component include Alflo P-10 manufactured by NOF Corporation (erucic acid monoamide, melting point 79 - 84°C), Alflo E-10 manufactured by NOF Corporation (oleic acid monoamide, melting point 72 - 76°C), Neutron-2 manufactured by Nippon Fine Chemical Co., Ltd. (oleic acid amide, melting point 70°C), BNT-22H manufactured by Nippon Fine Chemical Co., Ltd. (behenic acid amide, melting point 110 - 113°C), Lanette 22NF manufactured by BASF SE (behenyl alcohol, melting point 65°C), cetearyl alcohol manufactured by Fujifilm Wako Pure Chemical Corporation (melting point 57°C), etc., but are not limited thereto.

[0023] (B) component is preferably a combination of two or more (B-1) components from the perspective of suppressing the adhesion of the base agent (powder adhesion) to clothing. In particular, when (B) component combines two or more (B-1) components and contains one or more (B-2) components, and at least one of the (B-1) components is a natural wax, the slow solubility and powder adhesion suppression are better. On the other hand, when (B) component contains two or more (B-1) components and one or more (B-2) components, and at least one of the (B-1) components is a natural wax, hickeys may occur. Hickeys refer to the dents or depressions that appear on the surface due to the shrinkage when the sample solution solidifies during the cooling process of manufacturing the solid composition. Note that hickeys do not substantially affect the slow solubility and powder adhesion suppression. Regarding the mass ratio of the natural wax to the (B-2) component, the lower limit is preferably 1 or more, more preferably 1.5 or more, and even more preferably 2 or more. The upper limit is preferably 5 or less, and more preferably 4 or less. When at least one of the (B-1) components is a natural wax, a mass ratio of the natural wax to the (B-2) component of 1 or more is effective in suppressing hickeys.

[0024] (B) component is a known substance, which is easily available in the market and can also be prepared. (B) component's blending amount is not particularly limited as long as it can achieve the blending purpose. However, with respect to the total mass of the solid composition, it is preferably 10 - 90% by mass, more preferably 20 - 85% by mass, still more preferably 30 - 80% by mass, and particularly preferably 40 - 70% by mass. (B-1) component's blending amount is not particularly limited. However, with respect to the total mass of the solid composition, it is preferably 20 - 70% by mass, more preferably 30 - 65% by mass, still more preferably 40 - 60% by mass, and particularly preferably 45 - 60% by mass. (B-2) component's blending amount is not particularly limited. However, with respect to the total mass of the solid composition, it is preferably 1 - 30% by mass, more preferably 1 - 25% by mass, still more preferably 3 - 20% by mass, and particularly preferably 5 - 15% by mass. The mass ratio (B-1) / (B-2) of the component (B-1) to the component (B-2) is preferably 30 or less, more preferably 15 or less, and still more preferably 10 or less.

[0025] In the solid composition for laundry treatment of the present invention, the total amount of the component (A) and the component (B) is 40 to 95% by mass. Therefore, in the solid composition for laundry treatment of the present invention, components other than the component (A) and the component (B) are contained in an amount of 5% by mass or more. The total amount of the component (A) and the component (B) is preferably 50 to 95% by mass, more preferably 65 to 95% by mass, and still more preferably 70 to 95% by mass.

[0026] [Other components ((C) component)] In the solid composition for laundry treatment of the present invention, as other components other than the component (A) and the component (B), any components that can be used in the solid composition for laundry treatment may be included. For convenience, in this specification, these other components are referred to as the component (C). The component (C) is a known substance, is easily available on the market, and can also be prepared. Examples of the component (C) include antibacterial agents, antifungal agents, deodorants, repellents, ultraviolet absorbers, fluorescent agents, anti-migration agents, anti-fading agents, fiber surface modifiers, anti-redeposition agents, metal ion scavengers (chelating agents), fragrances, silicone compounds, organic acids, colorants, thickeners, thinning agents, solubilizers, alkalis, antioxidants, preservatives, storage stability improvers, pearl agents, extracts of natural products, etc. These components are components having a function of imparting the effects of the functional components to the washing machine or the object to be washed in washing, and are also referred to as "functional components". Note that the component (C) is not limited to only functional components. From the viewpoints of handling and ease of blending into the solid composition, the component (C) may preferably contain water, organic solvents, surfactants other than the component (A), etc., preferably organic solvents, surfactants other than the component (A). When the component (C) contains water, organic solvents, surfactants other than the component (A), the contents of these components are preferably 90% by mass or less, more preferably 85% by mass or less, and still more preferably 70% by mass or less based on the total mass of the component (C).

[0027] As antibacterial agents, Yoldal DP95 (chemical name: diiodomethyl-p-tolyl sulfone), alkyltrimethylammonium salts having 12 to 16 carbon atoms (Lipocard C12-37W, Lipocard C50, Lipocard C16Cl salt, Lipocard C16MS salt, etc. manufactured by Lion Specialty Chemicals), dialkyldimethylammonium salts (Lipocard 210-80E manufactured by Lion Specialty Chemicals, Carboquat MW50 manufactured by Lonza, etc.), dialkylmethylpolyammonium propionate (Bardap 26 manufactured by Lonza, etc.), dichlorosan (Tinosan HP100 manufactured by BASF, etc.), triclosan, benzalkonium chloride (Barquat MS100, Barquat MB80, etc. manufactured by Lonza), benzethonium chloride, zinc bis-(2-pyridylthio-1-oxide), 8-hydroxyquinoline, biguanide compounds (Proxel IB manufactured by Lonza), chlorhexidine hydrochloride, polylysine, etc. can be mentioned.

[0028] As antifungal agents, propynyl iodide butylcarbamate (IPBC, manufactured by LONZA), etc. can be mentioned. As deodorants, methylglycine diacetic acid (MGDA), aspartic acid diacetic acid (ASDA), isoserine diacetic acid (ISDA), β-alanine diacetic acid (ADAA), serine diacetic acid (SDA), glutamic acid diacetic acid (GLDA) iminodiacetic acid (IDS), hydroxyiminodiacetic acid (HIDS), or salts thereof, zinc fatty acids such as zinc ricinoleate, bentonite, dextrin, calcium lactate, chloroaluminum hydroxide, etc. can be mentioned. As repellents, known components used as known pest repellents, for example, DEET, ikaridin, etc. are applicable. As ultraviolet absorbers, Parsol 1789 (4-methoxy-4'-tert-butyldibenzoylmethane, manufactured by DSM Nutrition Japan), etc. can be used.

[0029] As the fluorescent agent, 4,4-bis(2-sulfostyryl)biphenyl disodium (Tinopearl CBS-X manufactured by BASF), As the substrate for preventing migration, polyvinylpyrrolidone or the like, As the anti-fading agent, 1,4-bis(3-aminopropyl)piperazine or the like, Examples of the fiber surface modifier include enzymes such as cellulase, amylase, protease, lipase, and keratinase. Examples of the anti-redeposition agent include a water-soluble polymer 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, trade name "TexCare SRN-100" (manufactured by Clariant, weight average molecular weight 2000 to 3000), trade name "TexCare SRN-300" (manufactured by Clariant, weight average molecular weight 7000), trade name "Repel-O-Tex Crystal" (manufactured by Rhodia), trade name "Repel-O-Tex QC" (manufactured by Rhodia), etc. are included. Other anti-redeposition agents include alkylene oxide adducts of polyalkyleneimine and alkylene oxide adducts of polyalkyleneamine. Specifically, trade name "Sokalan HP20" (manufactured by BASF) etc. are included. Examples of the metal ion scavenger (chelating agent) include malonic acid, succinic acid, malic acid, diglycolic acid, tartaric acid, citric acid, etc.

[0030] As the perfume, any perfume that is known to be compounded in the textile treatment composition can be used without any particular limitation.For example, the list of perfume raw materials that can be used is described in various documents, such as "Perfume and Flavor Chemicals", Vol. I and II, Steffen Arctander, Allured Pub. Co. (1994), "Synthetic perfume Chemistry and product knowledge", Genichi Indo, Chemical Industry Daily Co. (1996), "Perfume and Flavor Materials of Natural Origin", Steffen Arctander, Allured Pub. Co. (1994), "Encyclopedia of fragrance", edited by 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), etc. The blending amount of the fragrance is not particularly limited as long as the blending purpose can be achieved, but it is preferably less than 10% by mass based on the total mass of the solid composition for laundry treatment.

[0031] The molecular structure of the silicone compound may be linear, branched, or crosslinked. The silicone compound may be a modified silicone compound, and the modified silicone compound may be modified with one type of organic functional group or with two or more types of organic functional groups. The silicone compound can be used in the form of an oil, or in the form of an emulsion dispersed with an optional emulsifier. Specific examples of silicone include dimethyl silicone, polyether-modified silicone, methylphenyl silicone, alkyl-modified silicone, higher fatty acid-modified silicone, methylhydrogen silicone, fluorine-modified silicone, epoxy-modified silicone, carboxy-modified silicone, carbinol-modified silicone, amino-modified silicone, and the like. For example, polyoxyethylene-modified silicone (manufactured by Toray Dow Corning, SH3775M) can be used. The blending amount of silicone is not particularly limited as long as the blending purpose can be achieved, but it is preferably less than 10% by mass based on the total mass of the solid composition for laundry treatment.

[0032] Examples of organic acids include succinic acid, fumaric acid, malic acid, adipic acid, tartaric acid, benzoic acid, citric acid, pyrrolidonecarboxylic acid, salicylic acid, maleic acid, phthalic acid, glutaric acid, oxalic acid, and the like.

[0033] 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, Turquoise P-GR (all are trade names). The content of the colorant is not particularly limited as long as the blending purpose can be achieved, but it is preferably 0.00005 to 0.005% by mass based on the total mass of the solid composition for laundry treatment.

[0034] When the component (C) is granular, the particle size of the component (C) is preferably 800 μm or less, more preferably 500 μm or less, and still more preferably 200 μm or less.

[0035] The component (C) may be used alone or in combination of multiple types. The blending amount of component (C) is 5 to 60% by mass, preferably 5 to 50% by mass, more preferably 5 to 40% by mass, still more preferably 5 to 30% by mass, and particularly preferably 5 to 20% by mass with respect to the total mass of the solid composition. Similarly, the blending amount of the functional component is also 5 to 60% by mass, preferably 5 to 50% by mass, more preferably 5 to 40% by mass, still more preferably 5 to 30% by mass, and particularly preferably 5 to 20% by mass with respect to the total mass of the solid composition. When component (C) is a liquid, the blending amount of the liquid component (C) is preferably 40% by mass or less, more preferably 30% by mass or less, still more preferably 25% by mass or less, and particularly preferably 20% by mass or less with respect to the total mass of the solid composition. By setting the amount of component (C) within this range, the slow solubility and powder adhesion become better. The mass ratio of component (C) to the total amount of components (A) and (B) is not particularly limited, but is preferably 1 or less, more preferably 0.7 or less, still more preferably 0.5 or less, and particularly preferably 0.3 or less. Similarly, the mass ratio of the functional component to the total amount of components (A) and (B) is also not particularly limited, but is preferably 1 or less, more preferably 0.7 or less, still more preferably 0.5 or less, and particularly preferably 0.3 or less.

[0036] [Manufacturing method] The manufacturing method of the solid composition for laundry treatment of the present invention is not particularly limited, and it can be manufactured by heating each component to a temperature equal to or higher than its melting point, melting them, mixing them, pouring them into a mold, and cooling until they solidify. For example, the solid composition for laundry treatment of the present invention can be manufactured by mixing each component melted by heating to 90°C or higher and an arbitrary component at a predetermined concentration, pouring them into a mold, and cooling to room temperature (25°C).

[0037] [Usage method] The solid composition for laundry treatment of the present invention can be used as it is or can be used after being housed in a container, utensil, or bag. For example, the solid composition for laundry treatment of the present invention can be put inside commercially available laundry supplies such as a laundry ball or a laundry net, and these can be put into a washing machine together with the laundry to be used for washing. For example, as the laundry ball, the outer container part of the Eco laundry ball manufactured by Ihara Kikuhan Co., Ltd. with the tourmaline inside removed can be used, and as the laundry net, the Umi. laundry net manufactured by Diyouth can be used. These laundry supplies can be reused by separately housing and using the solid composition when all or almost all of the solid composition for laundry treatment of the present invention has dissolved during washing. Laundry supplies such as a laundry ball or a laundry net containing the solid composition for laundry treatment of the present invention may be put into the washing machine in advance, or may be put on top of the laundry after the laundry is put in, and may be put in the washing machine during all steps of water injection, washing, drainage, rinsing, dehydration, and (depending on the washing machine) drying. After the washing is finished, when taking out the laundry from the washing machine, laundry supplies such as a laundry ball or a laundry net containing the solid composition for laundry treatment of the present invention may be left as they are in the washing machine and can be used as they are during the next washing.

Examples

[0038] Hereinafter, the present invention will be described in more detail by way of examples, but the present invention is not limited thereto. In the examples, all component blending amounts are shown in mass% (except when specified, in terms of pure component).

[0039] [Component (A)] ·A-1: Bronon SR-720 (polyoxyethylene stearyl ether (20), melting point 47°C, solubility 0.6 g, manufactured by Aoki Yushi Co., Ltd.) In each of the above-mentioned component (A) and the following component (B), the dissolution amount means that after melting the sample at a temperature sufficient for melting, pouring it into a 2 cm square silicon mold or stainless steel mold, and solidifying it sufficiently by cooling at 25°C, the cube-shaped solid is stirred at level 4 with a magnetic stirrer (MAGNETIC STIRRER F-626N manufactured by Tokyo Glass Kikai Co., Ltd.) in 15°C water of 500 ml for 10 minutes.

[0040] [Component (B)] · B-1-1: Caster Wax A Flakes (castor hardened oil, melting point 85°C, dissolution amount 0.1 g, manufactured by NOF Corporation) · B-1-2: TOWAX1F6 (carnauba wax, melting point 80 - 86°C, dissolution amount 0.1 g, manufactured by Toagosei Co., Ltd.) · B-2-1: Lanette 22NF (behenyl alcohol, melting point 65°C, dissolution amount 0.1 g, manufactured by BASF SE)

[0041] [Component (C)] · C-1: TEGO Sorb (50% zinc fatty acid, 30% ethoxylated alcohol (C = 12 - 14), Evonik Japan Co., Ltd.) · C-2: Chlorohydroxyaluminum (Clariant Japan K.K.) · C-3: Calcium lactate (manufactured by FUJIFILM Wako Pure Chemical Corporation) · C-4: Tinosan HP100 ((5-chloro-2-(4-chlorophenoxy)phenol) 30%, propylene glycol 70%) · C-5: Fragrance (free fragrance composition D-1 described in the examples of JP-A-2021-4418)

[0042] [Method for preparing solid composition for laundry treatment] The components melted at a temperature sufficient to melt each component were mixed at a predetermined concentration. When component (C) is a liquid, the solid composition for washing treatment is prepared by mixing the components melted by heating to 90 °C or higher and any optional components at a predetermined concentration, pouring the mixture into a silicon mold, a stainless steel mold, or an aluminum mold with a diameter of 3 cm and a height of 4 cm, and solidifying it at a temperature sufficient to cool and solidify, thereby producing a 20 g cylindrical solid composition. When component (C) is a powder, the solid composition for washing treatment is prepared by mixing the components other than component (C) melted by heating to 90 °C or higher, and stirring for 5 minutes while introducing component (C) at 7500 ppm using a homogenizer (PT-MR10-35GT manufactured by Polytron) and a generator shift (PT-DA36 / 4EC-F250), pouring the mixture into a silicon mold, a stainless steel mold, or an aluminum mold with a diameter of 3 cm and a height of 4 cm, and solidifying it at a temperature sufficient to cool and solidify, thereby producing a 20 g cylindrical solid composition. The composition of the prepared solid composition for washing treatment is as shown in Tables 1 and 2 below.

[0043] [Evaluation of the solid composition for washing treatment] <Slow solubility> Each solid composition prepared as described above was placed in a protective container (Eco washing ball, manufactured by Ihara Kikohan), and the protective container containing the solid composition was placed in a vertical washing machine (AW-8V9 manufactured by Toshiba) and washed for about 40 minutes in the standard course. The weight change of the solid composition before and after washing was taken as the slow dissolution amount. The same evaluation was repeated 10 times in total, and the average slow dissolution amount was calculated from the 10 slow dissolution amounts. The average slow dissolution amount was evaluated based on the following evaluation criteria, and those with △ or more were considered qualified. The results are shown in the item "Slow dissolution amount" in Tables 1 and 2 below. (Evaluation criteria) ◎: 0.6 g to 2.0 g ○: Less than 0.4 g to 0.6 g, more than 2.0 g to 2.5 g △: Less than 0.2 g to 0.4 g, more than 2.5 g to 5.0 g, ×: Less than 0.2 g or more than 5.0 g

[0044] <No residue remaining on clothes (powder adhesion to clothes)> Each solid composition prepared as described above was placed in a protective container (Eco washing ball, manufactured by Ihara Kikohan Co., Ltd.). In a vertical washing machine (AW-8V9) manufactured by Toshiba, the protective container containing the solid composition and 4 kg of black clothing were placed, and after washing 9 times on the standard course for about 40 minutes, the amount of the base (powder) adhering to the clothing during the 10th wash was visually evaluated based on the following evaluation criteria. A result of △ or higher was considered a pass. The results are shown in the "Powder Adhesion" column in Tables 1 and 2 below. (Evaluation Criteria) ◎: No adhesion of the base 〇: Almost no adhesion of the base, and the adhering particles are 0.5 mm or less △: Slightly visible adhering particles of 0.5 mm or less, but at a level where there is no problem ×: Adhering particles of 0.5 mm or more are visible and remain prominently on the clothing

[0045] <Sink Mark Evaluation> The appearance of each solid composition prepared as described above was observed and evaluated based on the following evaluation criteria. A result of △ or higher was considered a pass. The results are shown in the "Sink Mark" column in Tables 1 and 2 below. ◎: No holes or wrinkles, and it is smooth 〇: There are some wrinkles or fine lines, but no large depressions or holes △: There are large depressions or holes on the surface ×: Does not solidify as a slow solvent

[0046]

Table 1

[0047]

Table 2

Claims

1. (A) one or more water-soluble components having a melting point of 25°C or higher and 120°C or lower, and (B) two or more water-insoluble components having a melting point of 50°C or higher are contained, and the components (A) and (B) are contained in a total amount of 40 to 95% by mass, a solid composition for laundry treatment.

2. The solid composition for laundry treatment according to claim 1, wherein the component (A) contains at least one compound selected from a water-soluble nonionic surfactant, polyethylene glycol, and a copolymer of polyoxyethylene and polyoxypropylene, which have a melting point of 25°C or higher and 120°C or lower.

3. The component (B) is (B-1) one or more water-insoluble components having a melting point of 50°C or higher, other than compounds 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, and (B-2) one or more water-insoluble components having a melting point of 50°C or higher, which are compounds 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 are included, or (B-1) two or more water-insoluble components having a melting point of 50°C or higher, other than compounds 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 The solid composition for laundry treatment according to claim 1 or 2, which contains.

4. The component (B) is (B-1) two or more water-insoluble components having a melting point of 50°C or higher, other than compounds 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, and (B-2) one or more water-insoluble components having a melting point of 50°C or higher, which are compounds 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 are included, at least one of the components (B-1) is a natural wax, and the content of the natural wax is 5% by mass or more based on the solid composition for laundry treatment, The solid composition for laundry treatment according to claim 1 or 2, wherein the mass ratio of the natural wax to the component (B-2) is 1 or more.

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