Method for enhancing detergency of liquid detergent composition for textile products

Abstract

Provided are a method for enhancing the detergency of a liquid detergent composition for textile products, which can enhance the detergency of the liquid detergent composition for textile products in a step of washing textile products, and a washing aid composition for a liquid detergent composition for textile products, which can enhance the detergency of the liquid detergent composition for textile products by being used together with the liquid detergent composition for textile products in a step of washing textile products.SOLUTION: A method for enhancing the detergency of a liquid detergent composition for textile products, comprising, in a step of washing textile products, mixing a surfactant-containing liquid detergent composition for textile products [hereinafter to be referred to as ingredient (a)], a washing aid composition containing 30 mass% or more and 100 mass% or less of (A1) a water-soluble inorganic salt (hereinafter to be referred to as ingredient (A1)) and water, and washing the textile products with a detergent liquid containing 100ppm or more and 1000ppm or less of ingredient (a) and 150ppm or more and 1500ppm or less of ingredient (A1).SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a method for enhancing the detergency of a liquid detergent composition for textiles, and a cleaning adjuvant composition for a liquid detergent composition for textiles. [Background technology]

[0002] Liquid detergent compositions for textile products are preferred because of their convenience, such as the ability to be applied directly to stains adhering to textile products during washing. The surfactants contained in such liquid detergent compositions can clean and remove oily stains such as sebum stains, and the pH of the wash bath is preferably near neutral to prevent damage to textile products and skin irritation. However, for this reason, these detergents generally have lower detergency than powder detergents, which clean by using alkaline agents. Although liquid detergent compositions for textile products still have sufficient cleaning power for normal washing, there are situations where the load of dirt is heavy, and in such cases it is desirable to use a laundry adjuvant that enhances the cleaning power of the liquid detergent composition.

[0003] Patent Document 1 discloses fragrance particles containing (a) a polyhydric alcohol that is liquid at 25°C and (b) polyethylene glycol, wherein the weight ratio of component (a) to component (b) is in the range of (a) / (b) = 0.0025 to 0.5, a method for producing the same, and a detergent composition containing the fragrance particles. Patent Document 2 discloses a composition comprising a plurality of antibacterial particles, the composition comprising (a) a water-soluble carrier in an amount of 25% to 99% based on the total weight of the particles, and (b) a diphenyl ether antibacterial agent, each of the plurality of antibacterial particles having a mass of about 1 mg to about 1 g, and the composition is a particulate laundry detergent composition comprising the plurality of antibacterial particles in combination with detergent particles. Patent Document 3 discloses fragrance particles in which a granulated material containing an encapsulated fragrance in a polymer compound and a neutral inorganic salt is coated with a fatty acid salt, and a granular detergent composition containing the same. Patent Document 4 discloses a powder detergent composition comprising a liquid fragrance solubilized or emulsified in an aqueous solution of a surfactant, mixed with an anhydrous inorganic or organic substance capable of absorbing water of crystallization or a substance partially containing water of crystallization, or a mixture thereof, and powdered. Meanwhile, techniques for applying inorganic salts to liquid detergents are also known. Patent Documents 5 and 6 disclose techniques for enhancing the detergency of hand washing by applying inorganic salts. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Special Publication No. 2023-809087 [Patent Document 2] Special Publication No. 2022-549738 [Patent Document 3] International Publication No. 2010-103832 [Patent Document 4] Japanese Patent Application Publication No. Hei 1-188597 [Patent Document 5] Japanese Patent Application Publication No. 2022-99292 [Patent Document 6] Japanese Patent Publication No. 2023-21936 Summary of the Invention [Problem to be solved by the invention]

[0005] When washing textiles, powder detergent compositions enhance their detergency through the action of surfactants and alkali. On the other hand, the detergency of neutral liquid detergent compositions for textiles is largely due to the action of surfactants. For this reason, methods such as spray-on washing have been used to deal with heavy soiling. Patent Documents 5 and 6 disclose techniques for enhancing detergency by controlling the rheology of the detergent solution during spray-on / hand-washing. However, it is desirable to enhance detergency even when washing with a normal surfactant concentration in a standard washing machine.

[0006] The present invention provides a method for enhancing the detergency of a liquid detergent composition for textile products, which can enhance the detergency of the liquid detergent composition for textile products in the process of washing textile products, and a cleaning auxiliary composition for a liquid detergent composition for textile products, which can enhance the detergency of the liquid detergent composition for textile products by being used together with the liquid detergent composition for textile products in the process of washing textile products. [Means for solving the problem]

[0007] The present invention relates to a method for enhancing the detergency of a liquid detergent composition for textile products, which comprises, in the step of washing textile products, mixing a liquid detergent composition for textile products containing a surfactant [hereinafter referred to as component (a)], a cleaning adjuvant composition containing 30% by mass or more and 100% by mass or less of (A1) a water-soluble inorganic salt [hereinafter referred to as component (A1)], and water, and washing textile products with a cleaning liquid containing 100 ppm or more and 1000 ppm or less of component (a) and 150 ppm or more and 1500 ppm or less of component (A1).

[0008] The present invention also relates to a cleaning adjuvant composition for use in a liquid detergent composition for textile products, which contains 30% by mass or more and 100% by mass or less of component (A1). [Effects of the Invention]

[0009] According to the present invention, there are provided a method for enhancing the detergency of a liquid detergent composition for textile products, which can enhance the detergency of the liquid detergent composition for textile products in the process of washing textile products, and a cleaning auxiliary composition for a liquid detergent composition for textile products, which can enhance the detergency of the liquid detergent composition for textile products by using the method together with the liquid detergent composition for textile products in the process of washing textile products. DETAILED DESCRIPTION OF THE INVENTION

[0010] The reason why the cleaning auxiliary composition for a liquid detergent composition for textile products of the present invention can enhance the cleaning power of the liquid detergent composition for textile products by using it together with a liquid detergent composition for textile products containing a surfactant in the process of cleaning textile products is not entirely clear, but is presumed to be as follows. In the process of washing textiles with a cleaning solution containing surfactant (a) and water, when the surfactant (a) is dissolved in the cleaning solution at a concentration above a certain level known as the critical micelle concentration (CMC), the surfactant monomers begin to form spherically aggregated micelles with their hydrophilic groups facing the water, resulting in an equilibrium between the monomer and micelles. The driving force behind the aggregate formation is the hydrophobicity of the surfactant, and these micellar aggregates contribute to the cleaning performance of textiles. On the other hand, even if the concentration of component (a) in the cleaning solution is low, when component (a) and the water-soluble inorganic salt (component (A1)) are dissolved in the cleaning solution at a certain concentration, component (A1) is thought to steal the water of hydration from the hydrophilic groups of component (a), thereby increasing the hydrophobicity of component (a). As a result, micellar aggregates that contribute to cleaning performance in the cleaning solution are formed even at lower concentrations of component (a), presumably resulting in a significant improvement in cleaning efficiency. In addition, for protein stains, which are one of the main components of food stains on clothing, it is believed that the cleaning rate for protein stains was improved due to the modifying and salting-out effect when the detergent came into contact with a cleaning solution containing components (a) and (A1) at a specified concentration. On the other hand, when a liquid detergent composition for textile products containing component (a) is mixed with water to prepare a cleaning solution in the process of washing textile products, if component (A1) is added at a high concentration, not only does the viscosity of the composition increase, but the composition also gels when added to / diluted in the cleaning solution, which is a problem. Therefore, the use of component (A1) to enhance the detergency of liquid detergent compositions for textile products has been avoided until now, and there has not been a technology to separately add a cleaning auxiliary composition containing component (A1) as a booster to enhance the detergency of liquid detergent compositions for textile products, as in the present invention. However, the present invention is not limited to the above-mentioned mechanism of action.

[0011] The present invention relates to a method for enhancing the detergency of a liquid detergent composition for textile products, which comprises, in the step of washing textile products, mixing a liquid detergent composition for textile products containing a surfactant [hereinafter referred to as component (a)], a cleaning adjuvant composition containing 30% by mass or more and 100% by mass or less of (A1) a water-soluble inorganic salt [hereinafter referred to as component (A1)], and water, and washing textile products with a cleaning liquid containing 100 ppm or more and 1000 ppm or less of component (a) and 150 ppm or more and 1500 ppm or less of component (A1). Hereinafter, the cleaning adjuvant composition containing 30% by mass or more and 100% by mass or less of component (A1) used in the method for enhancing the detergency of the liquid detergent composition for textile products of the present invention will be referred to as the cleaning adjuvant composition for the liquid detergent composition for textile products of the present invention, or simply as the cleaning adjuvant composition of the present invention.

[0012] The cleaning adjuvant composition of the present invention contains a water-soluble inorganic salt as component (A1). In the present invention, the water-soluble inorganic salt refers to an inorganic salt that dissolves in an amount of 1.0 g or more in 100 g of water at 20°C.

[0013] Component (A1) may be one or more water-soluble inorganic salts selected from alkali metal sulfates, alkaline earth metal sulfates, alkali metal hydrogen sulfates, alkaline earth metal hydrogen sulfates, alkali metal chlorides, and alkaline earth metal chlorides. From the viewpoints of safety for the human body and ease of production, one or more water-soluble inorganic salts selected from alkali metal sulfates, alkaline earth metal sulfates, alkali metal hydrogen sulfates, alkaline earth metal hydrogen sulfates, alkali metal chlorides, and alkaline earth metal chlorides are preferred, one or more water-soluble inorganic salts selected from alkali metal sulfates, alkaline earth metal sulfates, and alkali metal chlorides are more preferred, and one or more water-soluble inorganic salts selected from alkali metal sulfates and alkaline earth metal sulfates are even more preferred. More specifically, component (A1) is preferably one or more water-soluble inorganic salts selected from sodium sulfate, magnesium sulfate, sodium chloride, and magnesium chloride, and more preferably one or more water-soluble inorganic salts selected from sodium sulfate and magnesium sulfate.

[0014] From the viewpoints of improving cleaning performance and the ease of handling of the composition, the content of component (A1) in the cleaning adjuvant composition of the present invention is 30% by mass or more, preferably 50% by mass or more, more preferably 55% by mass or more, even more preferably 60% by mass or more, and still more preferably 65% ​​by mass or more, and 100% by mass or less, preferably 95% by mass or less, and more preferably 90% by mass or less. In the present invention, when water of crystallization is present in component (A1), the mass of component (A1) is calculated as the anhydrous value excluding the water of crystallization.

[0015] The cleaning adjuvant composition of the present invention may further contain a water-insoluble inorganic carrier as component (A2) from the viewpoint of the moisture absorption resistance and handling properties of the composition. In the present invention, the water-insoluble inorganic carrier refers to an inorganic carrier that dissolves in an amount of less than 1.0 g in 100 g of water at 20°C.

[0016] The component (A2) may be one or more water-insoluble inorganic carriers selected from amorphous aluminosilicates, calcium silicate, silicon oxide, and crystalline aluminosilicates.

[0017] Examples of amorphous aluminosilicates include AluminumSilicate P820 (manufactured by Degussa) and TIXOLEX 25 (manufactured by Hanfutsu Chemical Co., Ltd.), and those represented by the following general formula are also preferably used: These compounds are characterized by having ion exchange capacity. xM2O·Al2O3·ySiO2·wH2O (where M represents an alkali metal such as sodium or potassium, and x, y, and w represent the number of moles of each component within the following ranges: 0.2≦x≦2.0; 0.5≦y≦10.0; and w is any positive number including 0) xMeO·yM2O·Al2O3·zSiO2·wH2O (where Me represents an alkaline earth metal such as calcium or magnesium, and M represents an alkali metal such as sodium or potassium, and x, y, z, and w represent the number of moles of each component within the following ranges: 0.001≦x≦0.1; 0.2≦y≦2.0; 0.5≦z≦10.0; and w is any positive number including 0)

[0018] Examples of calcium silicate include Fluorite R (manufactured by Tokuyama Soda Co., Ltd.) and HUBERSORBR 600 (manufactured by Huber).

[0019] Specific examples of silicon oxide include white carbon, and more specific examples include ordinary white carbon and calcined white carbon. Ordinary white carbon is a general term for amorphous silicon dioxide made of SiO2, and is divided into precipitated silica and fumed silica depending on the manufacturing method. Calcined white carbon is white carbon obtained by treating ordinary white carbon at high temperature to hydrophobize the silanol groups on the surface.

[0020] Crystalline aluminosilicates are generally known as zeolites, and are represented by the following formula (1): a'(M2O)·Al2O3·b'(SiO2)·w(H2O) (1) (In the formula, M represents an alkali metal atom, a', b', and w represent the number of moles of each component, generally 0.7≦a'≦1.5, 0.8≦b'<6, and w is any positive number.) Among them, those represented by the following general formula (2): Na2O·Al2O3·n(SiO2)·w(H2O) (2) (where n is a number between 1.8 and 3.0, and w is a number between 1 and 6.) Preferably, the compound represented by the formula: As the crystalline aluminosilicate (zeolite), synthetic zeolites having an average primary particle size of 0.1 to 10 μm, such as A-type, X-type, and P-type zeolites, are preferably used. Zeolites may be used in the form of powder and / or dried zeolite agglomerated particles obtained by drying zeolite slurry.

[0021] From the viewpoint of moisture absorption resistance and handleability of the composition, component (A2) is preferably one or more water-insoluble inorganic carriers selected from silicon oxide, crystalline aluminosilicate, and calcium silicate, more preferably one or more water-insoluble inorganic carriers selected from silicon oxide and calcium silicate, and even more preferably silicon oxide.

[0022] When the cleaning auxiliary composition of the present invention contains component (A2), the content of component (A2) is, from the viewpoints of the solubility and moisture absorption resistance of the composition, preferably 3% by mass or more, more preferably 4% by mass or more, even more preferably 6% by mass or more, and preferably 20% by mass or less, more preferably 15% by mass or less, even more preferably 12% by mass or less, still more preferably 10% by mass or less, and still more preferably 9% by mass or less.

[0023] When the cleaning auxiliary composition of the present invention contains the component (A2), the mass ratio (A1) / [(A1)+(A2)] of the content of the component (A1) to the total content of the components (A1) and (A2), is preferably 0.8 or more, more preferably 0.82 or more, even more preferably 0.85 or more, and is preferably 1.0 or less, more preferably 0.95 or less, even more preferably 0.92 or less, from the viewpoint of achieving both moisture absorption resistance and solubility of the composition.

[0024] The cleaning adjuvant composition of the present invention may contain a beneficial ingredient as component (B) from the viewpoint of achieving a high quality finish on textile products. Component (B) may be a beneficial ingredient, preferably a beneficial ingredient for textiles. That is, the cleaning adjuvant composition of the present invention may be in the form of particles for delivering component (B) to textiles. Therefore, component (B) may be a compound that is beneficial to textiles and is not easily adsorbed onto textiles during normal washing processes.

[0025] The compound (B) that is beneficial to textile products and is not easily adsorbed to textile products in a normal washing process may be, for example, a compound that has a low molecular weight and does not have an adsorptive group such as a cationic group. Specifically, it may be one or more compounds selected from alcohols, esters, ketones, aldehydes, and phenolic compounds, each having a molecular weight of preferably 120 or more, more preferably 130 or more, and preferably 500 or less, more preferably 400 or less.

[0026] Component (B) may be a compound exhibiting a ClogP of preferably 1.0 or more and 30 or less. The ClogP of component (B) is preferably 1.5 or more, more preferably 2 or more, even more preferably 2.0 or more, even more preferably 2.3 or more, even more preferably 2.5 or more, and 30 or less, preferably 20 or less, more preferably 10 or less, even more preferably 6.0 or less, even more preferably 5.5 or less, and even more preferably 5.0 or less. When the ClogP value of component (B) is within this range, it is well supported and retained on component (A1) and / or component (A2). "Supported" here refers to a state in which component (B) is adsorbed on the surface of component (A1) and / or component (A2), preferably on the outer surface of component (A1) and / or component (A2), and on the inner surfaces of pores present on the surface of component (A1) and / or component (A2).

[0027] Here, the logP value is the logarithm of the 1-octanol / water partition coefficient of a compound, and means the ratio of the equilibrium concentrations of the solute in each solvent at partition equilibrium when the compound is dissolved as a solute in a two-phase solvent system of 1-octanol and water. It is generally expressed in the form of a logarithm to the base 10, "logP." The logP value can be calculated using the program "CLOGP" (DaylightCIS) or the like. In the program "CLOGP," the logP value is calculated by the method described in "A. Leo in "Comprehensive Medicinal Chemistry", Vol. 4, (C. Hansch, PG Sammes, The "calculated log P (ClogP)" is calculated by the method described in "J.B. Taylor and C.A. Ramsden, Eds.), p. 295, Pergamon Press, 1990," and is a ClogP value calculated using the program CLOGP v4.01. When multiple beneficial ingredients are contained, the ClogP value of the beneficial ingredient mixture can be calculated by multiplying the ClogP value of each beneficial ingredient by its volume ratio in the beneficial ingredient mixture and then summing the results.

[0028] Furthermore, component (B) may be a compound exhibiting an oil-water interfacial tension of preferably 7 mN / m or more at 25°C. From the viewpoint of the ability of component (B) to be supported and retained on component (A1) and / or component (A2), the oil-water interfacial tension of component (B) may be preferably 10 mN / m or more, more preferably 13 mN / m or more. The oil-water interfacial tension can be measured, for example, using a contact angle meter "DropMaster DM-501" (trade name, manufactured by Kyowa Interface Science Co., Ltd.).

[0029] Specific examples of component (B) include one or more selected from fragrances, fragrance precursors, oils (silicones, oil-soluble polymers), antioxidants, cooling agents, warming agents, antibacterial agents, dyes, pigments, UV absorbers, solvents, skin care ingredients such as moisturizers, cosmetic oils, preservatives, insecticides, and insect repellents. Component (B) is preferably one or more selected from (B1) fragrances and fragrance precursors (hereinafter referred to as component (B1)), (B2) disinfectants (hereinafter referred to as component (B2)), and (B3) antioxidants (hereinafter referred to as component (B3)).

[0030] The fragrance of component (B1) is not particularly limited, but examples thereof include fragrance compounds described in Nakajima Mototaka, "Fundamentals of Fragrance and Fragrance Blending," 4th edition, Sangyo Tosho Co., Ltd., April 20, 2005, and fragrance compounds known to be incorporated into fabric softeners through patent documents. The fragrance compounds may be a single compound or a mixture of two or more compounds. Also, fragrance components or blended fragrance compositions independently prepared by fragrance manufacturers can be used. The fragrance may be a single fragrance compound or a fragrance composition containing two or more of the fragrance compounds, and the fragrance composition may contain a fragrance diluent or solvent in addition to the fragrance compound. Furthermore, fragrance precursors can be used as the fragrance.

[0031] From the viewpoint of the ability to be supported and retained on the component (A1) and / or the component (A2), the fragrance compound of the component (B1) may be a fragrance compound having a ClogP value of 1.0 or more and 6.0 or less, and the ClogP value is preferably 1.0 or more, more preferably 2.0 or more, even more preferably 2.3 or more, still more preferably 2.5 or more, and is preferably 6.0 or less, more preferably 5.5 or less, and even more preferably 5.0 or less.

[0032] Examples of the fragrance compound of component (B1) include the following fragrance compounds, and one or more of these can be used: Here, the numbers in parentheses are ClogP values. Amyl cinnamic aldehyde (4.3), 2-methylundecanal (4.7), ethyl 3-methyl-3-phenyloxirane-2-carboxylate (3.0), allyl amyl glycolate (2.3), allyl caproate (3.2), allyl cyclohexyl propionate (4.5), allyl heptanoate (3.2), ambrettolide (5.4), Ambroxan (4.8), amyl salicylate (4.6), isoamyl salicylate (4.5), benzyl benzoate (4.0), benzyl salicylate (4.3), acetic acid Benzyl (2.0), bougeonal (3.9), ot-butylcyclohexyl acetate (4.4), pt-butylcyclohexyl acetate (4.4), Cashmeran (registered trademark) (4.5), cedryl methyl ether (5.0), 1,4-cineole (3.1), 1,8-cineole (3.1), citronellol (3.6), citronellyl acetate (4.6), citronellyl nitrile (3.6), cyclamen aldehyde (3.9), cyclohexyl salicylate (4.9), damascenone (4.2), α-damascone (4.3), β-damascone ( 4.4), δ-damascone (4.2), decanal (3.8), dihydromyrcenol (3.5), dimethyltetrahydrobenzaldehyde (2.9), diphenyl oxide (4.1), (1-cyclohexyl-2-methylpropan-2-yl) butanoate (4.4), ethylene brassylate (4.7), ethylene dodecanedioate (4.2), ethyl-2-methylbutyrate (2.3), ethyl vanillin (1.6), eugenol (2.7), Flute (registered trademark) (3.6), geraniol (3 .5), Geranyl Acetate (4.5), Geranyl Nitrile (3.9), Hexyl Cinnamic Aldehyde (4.8), Hexyl Acetate (4.8), Hexyl Salicylate (5.1), Cis-3-Hexenyl Salicylate (4.8), Iso E Super (5.2), α-Ionone (3.9), β-Ionone (4.4), Propan-2-yl-2-methylbutanoate (2.7), Javanol® (4.7), Lilial® (4.4), Limonene (4.9), Linalool (3.3), Linalyl Acetate (4.4) ), Lyral (registered trademark) (3.3), manzanate (2.8), methyl dihydrojasmonate (3.0), methyl anthranilate (2.3), methyl β-naphthyl ketone (2.9), γ-methyl ionone (4.8), methyl salicylate (2.6), 11-oxa-16-hexadecanolide (4.9), nectaryl (5.1), nerol (3.7), nerolin yarayara (3.3), γ-nonalactone (2.1), nonanal (3.3), octanal (2.8), phenylhexanol (3.5), propane -2-yl-2-methylbutanoate (2.7), Sandal Mysore Core (registered trademark) (4.7), terpineol (3.3), terpinyl acetate (4.3), tetrahydrolinalool (3.6), tricyclodecenyl acetate (2.9), tricyclodecenyl propionate (3.3), γ-undecalactone (3.1), ethylene bresylate (4.7), Florosa (2), isoamyl acetate (2.3), stearyl acetate (2.5), Triplal (2.9), Dynascon (registered trademark) (4.5)

[0033] Examples of the fragrance precursor (B1) include compounds that release fragrance components in response to water and light. Examples of compounds that release fragrance components in response to water include silicate ester compounds having an alkoxy component derived from a fragrance alcohol, fatty acid ester compounds having an alkoxy component derived from a fragrance alcohol, acetal compounds or hemiacetal compounds obtained by reacting a carbonyl component derived from a fragrance aldehyde or fragrance ketone with an alcohol compound, Schiff base compounds obtained by reacting a carbonyl component derived from a fragrance aldehyde or fragrance ketone with a primary amine compound, and hemiaminal compounds or hydrazone compounds obtained by reacting a carbonyl component derived from a fragrance aldehyde or fragrance ketone with a hydrazine compound. Examples of compounds that release fragrance components in response to light include 2-nitrobenzyl ether compounds having an alkoxy component derived from a fragrance alcohol, α-ketoester compounds having a carbonyl component derived from a fragrance aldehyde or fragrance ketone, and coumaric acid ester compounds having an alkoxy component derived from a fragrance alcohol. These perfume precursors may be used as polymers such as reaction products of some carboxy groups of polyacrylic acid with perfume alcohols.

[0034] Examples of the disinfectant component (B2) include triclosan (ClogP: 5.5), diclosan (ClogP: 4.9), 3-methyl-4-isopropylphenol (ClogP: 3.4), phenoxyethanol (ClogP: 1.39), and benzyl alcohol (ClogP: 1.1), and these may be used alone or in combination.

[0035] Examples of the antioxidant of component (B2) include butylhydroxytoluene (BHT / ClogP: 5.2), butylhydroxyanisole (ClogP: 3.0), tocopherol (ClogP: 13.0), and distyrenated cresol (ClogP: 1 to 1.94), and these may be used alone or in combination.

[0036] When the cleaning auxiliary composition of the present invention contains component (B), the content of component (B) is preferably 0.05% by mass or more, more preferably 0.10% by mass or more, even more preferably 1.0% by mass or more, still more preferably 2.0% by mass or more, even more preferably 3.0% by mass or more, still more preferably 4.0% by mass or more, and preferably 20% by mass or less, more preferably 15% by mass or less, even more preferably 10% by mass or less, and still more preferably 9.0% by mass or less.

[0037] When the cleaning auxiliary composition of the present invention contains the component (B1) as the component (B), the content of the component (B1) is preferably 1.0% by mass or more, more preferably 3.0% by mass or more, even more preferably 4.0% by mass or more, and preferably 20% by mass or less, more preferably 15% by mass or less, even more preferably 12% by mass or less, still more preferably 10% by mass or less, and still more preferably 9.0% by mass or less.

[0038] When the cleaning auxiliary composition of the present invention contains the component (B2) as the component (B), the content of the component (B2) is preferably 0.05% by mass or more, more preferably 0.10% by mass or more, and preferably 0.50% by mass or less, more preferably 0.30% by mass or less.

[0039] When the cleaning auxiliary composition of the present invention contains the component (B3) as the component (B), the content of the component (B3) is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, and preferably 0.8% by mass or less, more preferably 0.6% by mass or less.

[0040] When the cleaning adjuvant composition of the present invention contains component (B), it may further contain a water-soluble nonionic polymer as component (C) from the viewpoint of the ease of handling of the composition. The water-soluble nonionic polymer may be preferably one or more selected from polyethylene glycol (PEG), polypropylene glycol, polyoxyethylene alkyl ether, and polyoxyethylene phenol ether, more preferably one or more selected from polyethylene glycol and polypropylene glycol. Furthermore, from the viewpoints of particle strength and solubility, and, in the case of component (B) being a fragrance, stability such as suppression of evaporation and leaching during storage, the number-average molecular weight of the water-soluble nonionic polymer may be preferably 2,000 or more, more preferably 3,000 or more, even more preferably 4,000 or more, and preferably 20,000 or less, more preferably 15,000 or less, even more preferably 10,000 or less, as measured by GPC method using polystyrene as the standard. When measuring the molecular weight of polyethylene glycol, water / ethanol is used as the solvent.

[0041] When the cleaning auxiliary composition of the present invention contains component (C), the content of component (C) is preferably 1% by mass or more, more preferably 5% by mass or more, and even more preferably 8% by mass or more from the viewpoint of handleability of the composition, and is preferably 50% by mass or less, more preferably 40% by mass or less, even more preferably 30% by mass or less, still more preferably 20% by mass or less, and even more preferably 15% by mass or less from the viewpoint of solubility.

[0042] The cleaning adjuvant composition of the present invention may further contain a polyhydric alcohol having a molecular weight of 60 or more and 200 or less as component (D) from the viewpoint of the solubility of the composition.

[0043] From the viewpoint of the solubility of the composition, component (D) is preferably a dihydric alcohol having 2 to 6 carbon atoms which may be interrupted by an ether group. Specific examples of the component (D) include one or more selected from ethylene glycol, propylene glycol, butylene glycol, glycerin, diethylene glycol, dipropylene glycol, dibutylene glycol, pentanediol, and hexanetriol. From the viewpoint of the solubility of the composition, component (D) is preferably one or more selected from propylene glycol, ethylene glycol, and glycerin, more preferably one or more selected from propylene glycol and glycerin, and even more preferably propylene glycol.

[0044] When the cleaning auxiliary composition of the present invention contains component (D), the content of component (D) is, from the viewpoints of the solubility and storage stability of the composition, preferably 0.1% by mass or more, more preferably 0.3% by mass or more, even more preferably 0.5% by mass or more, and preferably 5% by mass or less, more preferably 3% by mass or less, even more preferably 2% by mass or less, and still more preferably 1.5% by mass or less.

[0045] When the cleaning auxiliary composition of the present invention contains the components (C) and (D), the mass ratio (D) / (C) of the content of the component (D) to the content of the component (C) is preferably 0.01 or more, more preferably 0.02 or more, even more preferably 0.03 or more, and preferably 0.2 or less, more preferably 0.15 or less, even more preferably 0.12 or less, from the viewpoints of the solubility and storage stability of the composition.

[0046] The cleaning adjuvant composition of the present invention may further contain a polysaccharide as component (E) from the viewpoint of the solubility and storage stability of the composition.

[0047] The polysaccharide of component (E) may be one or more selected from dextrin, cellulose and its derivatives, starch, locust bean gum, guar gum, pullulan, chitin, chitosan, agarose, carrageenan, curdlan, etc., and from the viewpoint of preventing the leaching of the flavoring component and the solubility of the delivery particles, it is preferably one or more selected from dextrin, cellulose and its derivatives, and starch, and more preferably dextrin.

[0048] Dextrin is obtained by partial hydrolysis of starch. Starch molecules are gradually broken down into smaller molecules through hydrolysis, ultimately becoming glucose. Depending on the degree of hydrolysis, a mixture of various sugars is produced. For example, the dextrin used in the present invention may be water-soluble starch, modified starch, or a derivative thereof, such as one or more selected from esterified starch (e.g., starch phosphate), etherified starch (e.g., carboxymethylated starch), enzyme-modified dextrin (e.g., maltodextrin), and roasted dextrin. Furthermore, it is preferable to use starch prepared by mixing, in a predetermined ratio, non-reducing end starch having a dextrose equivalent value (hereinafter referred to as DE value) of 0 to 8, as defined by the following formula, with water-soluble starch, modified starch, or a derivative thereof in which the glucose end has been converted to a reducing end by hydrogenation. Non-reducing end starch is starch in which both ends are non-reducing ends (having no reducing ends).

[0049] DE value = [direct reducing sugars (expressed as glucose) / solids] x 100 In particular, the dextrin is preferably one having a DE value in the range of 0 to 8 and having been subjected to a hydrogenation treatment, and more preferably one containing a starch carrier mixed with starch having a DE value in the range of 0 to 3 and having a glucose end as a reducing end.

[0050] Starch hydrolysis can be carried out by standard methods such as acid-catalyzed or enzyme-catalyzed methods. Specific examples of dextrins include those produced by the method described in Japanese Patent Application Laid-Open No. 8-143603. Among these dextrins, dextrins with a specific volume of 5 m3 or less are preferred due to their oil absorption capacity. 2 / g or more 10m 2 The glass transition temperature of dextrin is preferably 200° C. or higher from the viewpoint of stability at high temperatures.

[0051] The cellulose and its derivatives include one or more selected from carboxymethyl cellulose, methyl cellulose, hydroxypropyl methyl cellulose, cationized cellulose, and the like. The starch may be one or more selected from corn starch, wheat starch, potato starch, tapioca starch, and the like.

[0052] When the cleaning auxiliary composition of the present invention contains component (E), the content of component (E) is, from the viewpoints of storage stability and handleability of the composition, preferably 1% by mass or more, more preferably 1.5% by mass or more, even more preferably 2.0% by mass or more, and preferably 35% by mass or less, more preferably 30% by mass or less, even more preferably 25% by mass or less, still more preferably 20% by mass or less, still more preferably 15% by mass or less, still more preferably 10% by mass or less, and still more preferably 5% by mass or less.

[0053] The cleaning adjuvant composition of the present invention may contain, as other components, encapsulated fragrance components, water-soluble cationic polymeric compounds, cationic surfactants, organic solvents, pigments, colorants, etc. (however, excluding those corresponding to components (A1), (A2), (B), (C), (D), and (E)).

[0054] The cleaning adjuvant composition of the present invention is preferably in the form of particles, and although not particularly limited, may be in the form of spherical, hemispherical, cylindrical, granular or powder, and from the viewpoint of appearance and usability, spherical, hemispherical or cylindrical shapes are preferred.

[0055] When the cleaning adjuvant composition of the present invention is in the form of particles, from the viewpoints of solubility and handleability, the average particle size is preferably 1.0 mm or more, more preferably 1.2 mm or more, even more preferably 1.5 mm or more, and preferably 20 mm or less, more preferably 15 mm or less, even more preferably 10 mm or less, still more preferably 5 mm or less, and still more preferably 3 mm or less. The average particle size can be measured by calculating the equivalent spherical diameter of 250 particles using image analysis software ImageJ.

[0056] The cleaning adjuvant composition of the present invention may have a bulk density of preferably 400 g / L or more, more preferably 500 g / L or more, from the viewpoint of ease of use, and may have a bulk density of preferably 1000 g / L or less, more preferably 900 g / L or less, from the viewpoint of solubility. The bulk density can be measured using a bulk specific gravity measuring device in accordance with JIS K7365.

[0057] The cleaning adjuvant composition of the present invention is produced by mixing component (A1), optional component (A2), optional component (B), optional component (C), optional component (D), and optional component (E). That is, the present invention relates to a method for producing a cleaning adjuvant composition by mixing component (A1), optional component (A2), optional component (B), optional component (C), optional component (D), and optional component (E). The method for producing the cleaning auxiliary composition of the present invention can be appropriately applied to the embodiments described for the cleaning auxiliary composition of the present invention. Components (A1), (A2), (B), (C), (D), and (E) are the same as those described for the cleaning auxiliary composition of the present invention. In the method for producing the cleaning auxiliary composition of the present invention, the amount of the (A1) component, the amount of the (A2) component, the mass ratio (A1) / [(A1)+(A2)] of the amount of the (A1) component to the total amount of the (A1) and (A2) components, the amount of the (B) component, the amount of the (C) component, the amount of the (D) component, the mass ratio (D) / (C) of the amount of the (D) component to the amount of the (C) component, and the amount of the (E) component can be appropriately applied by substituting the amount of each component for the content of each component and the range of each mass ratio described for the cleaning auxiliary composition of the present invention.

[0058] Specific examples of methods for producing the cleaning adjuvant composition of the present invention include the following: Powder mixture (1) is obtained by premixing half of component (A1) with components (A2), (D), and (E) at room temperature. Powder mixture (1) is then heated to 75°C, and the remaining half of component (A1) is added to obtain powder mixture (2). After the temperature of powder mixture (2) reaches 60°C, components (B) and (C) are added to powder mixture (2) and further mixed to obtain powder mixture (3). The resulting powder mixture (3) is extruded through a screen with a 2.0 mm hole diameter using an extrusion granulator (e.g., manufactured by Dalton Co., Ltd.) and compression-molded to form granules. The resulting granules are then cooled and pulverized and sized using a power mill (e.g., manufactured by Dalton Co., Ltd.) to obtain the cleaning adjuvant composition.

[0059] The mixer used to mix component (A1), optional component (A2), optional component (B), optional component (C), optional component (D), and optional component (E) is not particularly limited as long as it can mix them substantially uniformly, and may be a mixer equipped with a heating means, such as a Henschel mixer (manufactured by Mitsui Mining Co., Ltd.), a high-speed mixer (manufactured by Fukae Kogyo Co., Ltd.), a ribbon mixer (manufactured by Tokuju Kogyosho Co., Ltd.), a Nauta mixer (manufactured by Hosokawa Micron Corporation), a V-type blender (manufactured by Dalton Corporation), and a container-rotating granulator (manufactured by Sugiyama Heavy Industries Co., Ltd.).

[0060] The mixture can be compression-molded to obtain granules using a known extrusion granulator such as a disc pelletizer (e.g., manufactured by Fuji Paudal Co., Ltd.), a basket-type granulator (e.g., manufactured by Kikusui Seisakusho Co., Ltd.), a granulator (e.g., manufactured by Hosokawa Micron Corporation), or the horizontal extrusion screw-type extrusion granulator described in JP-A-10-192688. A kneading extrusion device such as Extrude-O-Mix (e.g., manufactured by Hosokawa Micron Corporation) can also be used.

[0061] The granules are cooled to prevent the compression-molded product from coalescing or clumping, and then sized. The equipment used to size the extrusion granules is not particularly limited. That is, any known pulverizer (or crusher) can be used. Examples include high-speed mixers (e.g., manufactured by Fukae Industries Co., Ltd.), Marumerizers (e.g., manufactured by Fuji Paudal Co., Ltd.), Spiraflow (e.g., manufactured by Freund Corporation), Fitzmills (e.g., manufactured by Dalton Co., Ltd.), power mills (e.g., manufactured by Powrex Corporation), and Comil (e.g., manufactured by Quadro). From the viewpoint of the amount of fine powder generated and productivity, it is preferable to use a pulverizer such as a power mill using a knife cutter or a Comil, which crushes particles by pressing them against an impeller and a screen.

[0062] A power mill is a device disclosed in, for example, Japanese Patent Application Laid-Open No. 5-96195, and is shaped as shown in FIG. 1, and is a piece of equipment having a cutter blade 1 and a cylindrical screen 2. Particles fed into the power mill inlet fall freely within the power mill, and during this natural fall they are crushed and sized by the crushing blades attached to the cutter blade 1.

[0063] The Comill is a device disclosed in, for example, US Pat. No. 4,759,507, and has a configuration as shown in Fig. 2, and is equipped with an impeller 3 and a screen 4. Particles fed into the Comill inlet are pressed against the screen 4 by the centrifugal force generated by the rotating impeller 3. Small particles instantly rise on the vortex flow generated by the conical shape, and then, as they descend, they are crushed and sized by the impeller 3.

[0064] The cleaning adjuvant composition of the present invention can enhance the detergency of a liquid detergent composition for textiles by washing textiles with a cleaning liquid obtained by mixing a liquid detergent composition for textiles containing a surfactant and water in a step of washing textiles. That is, the cleaning adjuvant composition of the present invention is a cleaning adjuvant composition for use in a liquid detergent composition for textiles.

[0065] The liquid detergent composition for fabrics to be mixed together with the cleaning adjuvant composition of the present invention contains a surfactant as component (a). The surfactant of the component (a) may be one or more selected from (a1) nonionic surfactants (hereinafter referred to as component (a1)), (a2) anionic surfactants (hereinafter referred to as component (a2)), (a3) ​​cationic surfactants (hereinafter referred to as component (a3)), and (a4) amphoteric surfactants (hereinafter referred to as component (a4)). From the viewpoints of cleansing properties and foaming properties, one or more selected from component (a1) and component (a2) are preferred.

[0066] The nonionic surfactant of the component (a1) is preferably a nonionic surfactant (a11) containing alkyleneoxy groups, in which the average number of moles of alkyleneoxy groups added is 1 or more and 30 or less (hereinafter referred to as component (a11)). The alkyleneoxy group of the component (a11) is preferably one or more groups selected from alkyleneoxy groups having from 2 to 4 carbon atoms. The alkyleneoxy group having from 2 to 4 carbon atoms is preferably one or more groups selected from an ethyleneoxy group and a propyleneoxy group. From the viewpoint of cleaning properties, the average number of moles of alkyleneoxy groups added in component (a11) is 1 or more, preferably 6 or more, more preferably 10 or more, and 30 or less, preferably 25 or less, more preferably 20 or less.

[0067] The component (a11) is preferably a nonionic surfactant represented by the following general formula (a11). R 11a (CO) m O-(A 11a O) n -R 12a (a11) [In the formula, R 11a is an aliphatic hydrocarbon group having 8 to 18 carbon atoms, and R 12a is a hydrogen atom or a methyl group. CO is a carbonyl group, and m is the number 0 or 1. A 11a The O group is an alkyleneoxy group containing an ethyleneoxy group and having 2 to 4 carbon atoms. n is the average number of moles added and is a number of 1 to 30.

[0068] In general formula (a11), R 11a From the viewpoint of detergency, the number of carbon atoms is 8 or more, preferably 10 or more, more preferably 12 or more, and 18 or less, preferably 16 or less, more preferably 14 or less. R 11a is an aliphatic hydrocarbon group, preferably a group selected from alkyl groups and alkenyl groups.

[0069] In general formula (a11), A 11a The O group is an alkyleneoxy group containing an ethyleneoxy group and having 2 to 4 carbon atoms, preferably an alkyleneoxy group containing an ethyleneoxy group and having 2 to 3 carbon atoms, and more preferably an ethyleneoxy group. 11a The O group may be an alkyleneoxy group, including an ethyleneoxy group and another alkyleneoxy group, such as a propyleneoxy group. The other alkyleneoxy group is preferably a propyleneoxy group. 11a When the O group contains an ethyleneoxy group and a propyleneoxy group, the ethyleneoxy group and the propyleneoxy group may be bonded in a block or random manner.

[0070] In the general formula (a11), n ​​is A 11a This is the average number of moles of O groups added, and is a number of 1 to 30. In general formula (a11), n ​​is 1 or more, preferably 6 or more, more preferably 10 or more, and 30 or less, preferably 25 or less, more preferably 20 or less, from the viewpoint of detergency.

[0071] Specific examples of nonionic surfactants other than component (a11) that do not have an alkyleneoxy group include one or more selected from sucrose fatty acid esters, glycerin fatty acid esters, sorbitan fatty acid esters, alkyl glycosides, and glyceryl monoethers.

[0072] Examples of the anionic surfactant of component (a2) include alkylbenzenesulfonates, alkyl or alkenyl ether sulfates, alkyl or alkenyl sulfates, olefinsulfonates, alkanesulfonates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, α-sulfofatty acid salts, N-acylamino acid salts, mono- or di-phosphate salts, sulfosuccinate salts, etc. Examples of alkyl ether sulfates include polyoxyethylene alkyl ether sulfates. The alkyl or alkenyl group of the anionic surfactant has, for example, 8 or more and 22 or less carbon atoms. The average number of moles of oxyethylene groups added in the anionic surfactant is, for example, 0 or more and 10 or less. Counter ions of the anionic groups of these anionic surfactants include alkali metal ions such as sodium ions and potassium ions; alkaline earth metal ions such as calcium ions and magnesium ions; ammonium ions; and alkanolamines having 1 to 3 alkanol groups each having 2 or 3 carbon atoms (for example, monoethanolamine, diethanolamine, triethanolamine, triisopropanolamine, etc.). These surfactants can be used alone or in combination of two or more.

[0073] From the viewpoint of detergency, the component (a2) is preferably one or more selected from alkylbenzene sulfonates, alkyl sulfates, polyoxyethylene alkyl ether sulfates, and alpha-sulfofatty acid ester salts, and more preferably alkylbenzene sulfonates. The number of carbon atoms in the alkyl group of the alkylbenzenesulfonate is preferably 8 or more, more preferably 12 or more, and preferably 18 or less, more preferably 14 or less.

[0074] Examples of cationic surfactants for component (a3) ​​include alkyltrimethylammonium salts in which the alkyl group has 8 to 22 carbon atoms, dialkyldimethylammonium salts in which the alkyl group has 8 to 22 carbon atoms, alkyldimethylbenzylammonium salts in which the alkyl group has 8 to 22 carbon atoms, and benzethonium salts. Examples of salts include halogen salts and alkyl sulfates in which the alkyl group has 1 to 3 carbon atoms. These surfactants can be used alone or in combination of two or more.

[0075] Examples of amphoteric surfactants of component (a4) include N-alkanoylaminopropyl-N,N-dimethylamine oxide, N-alkyl-N,N-dimethylamine oxide, N-alkanoylaminopropyl-N,N-dimethyl-N-carboxymethylammonium betaine, N-alkyl-N,N-dimethyl-N-carboxymethylammonium betaine, N-alkyl-N,N-dimethyl-N-sulfopropylammonium sulfobetaine, N-alkyl-N,N-dimethyl-N-(2-hydroxysulfopropyl)ammonium sulfobetaine, N-alkanoylaminopropyl-N,N-dimethyl-N-sulfopropylammonium sulfobetaine, and N-alkanoylaminopropyl-N,N-dimethyl-N-(2-hydroxysulfopropyl)ammonium sulfobetaine. In these, the alkanoyl group is, for example, lauroyl or myristyl. Furthermore, in these, the alkyl group is, for example, lauryl or myristyl. These surfactants can be used alone or in combination of two or more.

[0076] The content of component (a) in the liquid detergent composition for textile products is preferably 5% by mass or more, more preferably 10% by mass or more, even more preferably 15% by mass or more, from the viewpoint of cleaning power, and is preferably 60% by mass or less, more preferably 50% by mass or less, even more preferably 40% by mass or less, even more preferably 30% by mass or less, from the viewpoint of storage stability.

[0077] The liquid detergent composition for fabrics is a liquid containing water. From the viewpoint of storage stability, the water content in the liquid detergent composition for textile products is preferably 40% by mass or more, more preferably 50% by mass or more, even more preferably 60% by mass or more, and preferably 95% by mass or less, more preferably 90% by mass or less, even more preferably 85% by mass or less.

[0078] The liquid detergent composition for textile products may contain, as components other than component (a), alkaline agents, chelating agents, anti-redeposition agents, dispersants, bleaching agents, softeners, enzymes, fluorescent dyes, antioxidants, pigments, antibacterial preservatives, antifoaming agents, etc., within the range that does not impair the effects of the present invention.

[0079] The content of component (a) in the cleaning liquid obtained by mixing the liquid detergent composition for textile products, the cleaning auxiliary composition of the present invention, and water is 100 ppm or more, preferably 150 ppm or more, more preferably 200 ppm or more, and 1000 ppm or less, preferably 750 ppm or less, more preferably 500 ppm or less, and even more preferably 300 ppm or less, from the viewpoints of cleaning performance and suppressing foam overflow from the drain.

[0080] From the viewpoint of enhancing the detergency of the liquid detergent composition for textile products, the content of component (A1) in the cleaning liquid is 150 ppm or more, preferably 200 ppm or more, more preferably 250 ppm or more, even more preferably 300 ppm or more, and 1500 ppm or less, preferably 1300 ppm or less, even 1000 ppm or less, even 800 ppm or less, even 600 ppm or less, even 500 ppm or less, even 450 ppm or less, even 400 ppm or less.

[0081] Furthermore, from the viewpoint of enhancing the detergency of the liquid detergent composition for textile products in the cleaning liquid, the mass ratio (A1) / (a) of the content of component (A1) to the content of component (a) is preferably 1 or more, more preferably 1.35 or more, even more preferably 1.5 or more, still more preferably 3 or more, particularly preferably 4 or more, and preferably 10 or less, more preferably 9 or less, even more preferably 8 or less.

[0082] When the cleaning auxiliary composition of the present invention contains component (A2), the content of component (A2) in the cleaning solution is, from the viewpoint of the solubility of the composition, preferably 15 ppm or more, more preferably 20 ppm or more, even more preferably 25 ppm or more, and preferably 55 ppm or less, more preferably 50 ppm or less, even more preferably 45 ppm or less.

[0083] When the cleaning auxiliary composition of the present invention contains component (B), the content of component (B) in the cleaning solution is, from the viewpoint of solubility in washing water, preferably 0.1 ppm or more, more preferably 1.0 ppm or more, even more preferably 5.0 ppm or more, and preferably 80 ppm or less, more preferably 50 ppm or less, even more preferably 40 ppm or less, and still more preferably 35 ppm or less.

[0084] When the cleaning auxiliary composition of the present invention contains component (C), the content of component (C) in the cleaning solution is, from the viewpoint of the viscosity of the washing bath water, preferably 0.1 ppm or more, more preferably 1.0 ppm or more, even more preferably 5 ppm or more, still more preferably 10 ppm or more, and preferably 1000 ppm or less, more preferably 500 ppm or less, even more preferably 200 ppm or less, and still more preferably 100 ppm or less.

[0085] When the cleaning auxiliary composition of the present invention contains component (D), the content of component (D) in the cleaning liquid is preferably 0.1 ppm or more, more preferably 0.5 ppm or more, even more preferably 1 ppm or more, and preferably 15 ppm or less, more preferably 10 ppm or less, even more preferably 8 ppm or less, from the viewpoints of the solubility and handleability of the composition.

[0086] When the cleaning auxiliary composition of the present invention contains component (E), the content of component (E) in the cleaning solution is, from the viewpoint of the viscosity of the washing bath water, preferably 0.1 ppm or more, more preferably 0.5 ppm or more, even more preferably 1.0 ppm or more, still more preferably 5.0 ppm or more, and preferably 500 ppm or less, more preferably 100 ppm or less, even more preferably 50 ppm or less, and still more preferably 30 ppm or less.

[0087] The mass ratio (A1) / [(A1)+(A2)] of the content of the component (A1) to the total content of the components (A1) and (A2) in the cleaning solution, and the mass ratio (D) / (C) of the content of the component (D) to the content of the component (C) are the same as the ranges of each mass ratio described for the cleaning adjuvant composition of the present invention.

[0088] From the viewpoint of cleaning performance, the pH of the cleaning solution is preferably 5.0 or higher, more preferably 5.5 or higher, even more preferably 6.0 or higher, and preferably 10 or lower, more preferably 9.0 or lower, even more preferably 8.5 or lower. The pH of the cleaning solution may be measured at a temperature of 20°C.

[0089] When the cleaning auxiliary composition of the present invention is added in the step of washing textile products, the amount of the cleaning auxiliary composition of the present invention added may be preferably 3.0 g or more, more preferably 5.0 g or more, and preferably 15.0 g or less, more preferably 10.0 g or less, per 1 kg of textile products. [Example]

[0090] The components used in the Examples, Comparative Examples, and Formulation Examples are listed below.

[0091] <Component (A1)> · Glauber's salt: Sodium sulfate, manufactured by Shikoku Kasei Kogyo Co., Ltd. (crushed A0 Glauber's salt) <(A2) component> White carbon (silica): Amorphous silicon dioxide made from SiO2, manufactured by Tokuyama Corporation

[0092] <(B) component> Fragrance 1: A fragrance composition consisting of the fragrance compounds shown in Table 1 below. ·: Dichlosan: 5-chloro-2-(4-chlorophenoxy)phenol (BASF Japan Ltd., product name "Tinosan HP100"), active ingredient 30% by mass, contents in Table 4 are converted to active ingredient BHT: 2,6-di-t-butyl-4-hydroxytoluene, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.

[0093] [Table 1]

[0094] <(C) component> Polyethylene glycol: Polyethylene glycol, number average molecular weight 8,200 <(D) component> Propylene glycol: Propylene glycol, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd. <(E) component> Dextrin: Dextrin CZRM-X, manufactured by Nippon Starch Chemical Co., Ltd.

[0095] <Component (a)> Nonion 1: Polyoxyethylene lauryl ether (average number of moles of ethylene oxide added: 10), component (a1) Nonionic 2: Polyoxine alkylene alkyl ether (alkyl group: lauryl / myristyl=70 / 30 (mass ratio), average number of moles of ethylene oxide added: 18 moles, average number of moles of propylene oxide added: 2 moles), component (a1) LAS: Sodium linear alkylbenzene sulfonate, component (a2) ES: Polyoxyethylene (average number of moles added: 2 moles) lauryl ether sulfate sodium, component (a2)

[0096] [Preparation of Cleaning Auxiliary Composition] Half of the (A1) component was mixed with the (A2), (D), and (E) components at room temperature in a Nauta mixer (NX-S model, manufactured by Hosokawa Micron Corporation) to obtain powder mixture (1). The jacket temperature was then raised to 90°C, and the powder mixture (1) was heated to 75°C. The remaining half of the (A1) component was then added. After the internal temperature reached 60°C, component (B) was added and mixed to obtain powder mixture (2). Next, pre-melted component (C) was added to powder mixture (2) and further mixed to obtain powder mixture (3). The resulting powder mixture (3) was then extruded through a 2.0 mm pore size screen in an extrusion granulator (EXR-60 model, manufactured by Dalton Corporation) and compacted. The resulting granules were then cooled and pulverized in a granulator (Power Mill, Model P-02S, manufactured by Dalton Co., Ltd.) to obtain a cleaning adjuvant composition with an average particle size of 1.5 mm and a bulk density of 800 g / L.

[0097] [Evaluation of cleaning power enhancement effect] <Preparation of soiled cloth for evaluation> Protein-stained cloth As the protein-stained cloth, EMPA117 artificially soiled cloth (manufactured by Swissatest, cut to 6 cm x 6 cm) was used. Sebum stained cloth A model artificial sebum contaminated liquid having the following composition was applied to a cloth to prepare a sebum-stained contaminated cloth. The application of the model artificial sebum contaminated liquid to the cloth was carried out by printing the model artificial sebum contaminated liquid onto the cloth using a gravure roll coater. The process of applying the model artificial sebum contaminated liquid to the cloth to prepare the model artificial sebum contaminated liquid was carried out using a gravure roll with a cell capacity of 58 cm. 3 / m 2 The coating speed was 1.0 m / min, the drying temperature was 100°C, and the drying time was 1 minute. Cotton 2003 (manufactured by Tanigashira Shoten) was used.

[0098] *Composition of model artificial sebum contamination solution: lauric acid 0.4% by mass, myristic acid 3.1% by mass, pentadecanoic acid 2.3% by mass, palmitic acid 6.2% by mass, heptadecanoic acid 0.4% by mass, stearic acid 1.6% by mass, oleic acid 7.8% by mass, triolein 13.0% by mass, n-hexadecyl palmitate 2.2% by mass, squalene 6.5% by mass, egg white lecithin liquid crystal 1.9% by mass, Kanuma red clay 8.1% by mass, carbon black 0.01% by mass, balance water (total 100% by mass)

[0099] <Preparation of Liquid Detergent Composition for Textile Products> Liquid detergent compositions for textile products shown in Tables 2 and 3 were prepared as models of commercially available liquid detergent compositions for textile products.

[0100] <Test Procedure> Five of the above-mentioned soiled cloths (6 cm x 6 cm) for evaluation (Table 2 shows five protein-stained cloths, and Table 3 shows five sebum-stained cloths) were washed for 10 minutes at 85 rpm in a tergotometer (Ueshima, MS-8212). Stirring during washing was performed using a three-blade stirrer for the tergotometer (bottom diameter 6.8 cm, maximum blade length 4.0 cm radially from the stirrer). The washing conditions were as follows: each liquid detergent composition for textiles and each cleaning auxiliary composition in Tables 2 and 3 were added to the washing solution in amounts as shown in the tables (for cleaning standard 1 in Table 2 and cleaning standard 2 in Table 3, only the liquid detergent composition for textiles was added in amounts as shown in the tables); the water temperature was 20°C; and the bath ratio was 20 (adjusted using cotton 2003 (manufactured by Tanigashira Shoten) cut into 6 cm x 6 cm pieces). The concentrations of component (a) and component (A1) in each cleaning solution are shown in Tables 2 and 3. The pH of each cleaning solution at 20°C was 7.0 to 8.5. After cleaning, the samples were rinsed with tap water (20°C) for 3 minutes. The reflectance at 550 nm of the original cloth before soiling and before and after washing was measured using a colorimeter (Z-300A manufactured by Nippon Denshoku Co., Ltd.), and the cleaning rate (%) was calculated using the following formula (the average value of the cleaning rates for five sheets was calculated). Cleaning rate (%) = 100 × [(reflectance after cleaning - reflectance before cleaning) / (reflectance of original fabric - reflectance before cleaning)]

[0101] <Evaluation method> For each of Tables 2 and 3, the relative detergency was calculated using the detergency in cleaning standard 1 or 2 using only the liquid detergent composition for textiles according to the following formula. A relative detergency of more than 105% can be said to have an enhanced detergency effect. The higher the relative detergency value, the better. Relative cleaning rate (%) = [Cleaning rate (%) of each Example and Comparative Example / Cleaning rate (%) of cleaning standard] × 100

[0102] [Table 2]

[0103] [Table 3]

[0104] In Tables 2 and 3, (A1) / (a) (mass ratio) indicates the mass ratio (A1) / (a) of the content of the component (A1) to the content of the component (a) in each cleaning liquid.

[0105] [Prescription example] Table 4 shows formulation examples of the liquid detergent composition for textiles of the present invention and of cleaning solutions prepared by mixing the cleaning adjuvant composition of the present invention with water. The pH of each cleaning solution at 20°C is 7.0 to 8.5. The cleaning solutions of these formulation examples can enhance the detergency of the liquid detergent composition for textiles in the process of washing textiles.

[0106] [Table 4]

Claims

1. A method for enhancing the detergency of a liquid detergent composition for textile products, comprising, in a step of washing textile products, mixing a liquid detergent composition for textile products containing a surfactant [hereinafter referred to as component (a)], a cleaning adjuvant composition containing 30% by mass or more and 100% by mass or less of (A1) a water-soluble inorganic salt [hereinafter referred to as component (A1)], and water, and washing textile products with a cleaning liquid containing 100 ppm or more and 1,000 ppm or less of component (a) and 150 ppm or more and 1,500 ppm or less of component (A1).

2. 2. A method for enhancing the detergency of a liquid detergent composition for textile products according to claim 1, wherein the mass ratio (A1) / (a) of the content of component (A1) to the content of component (a) in the cleaning liquid is 1 or more and 10 or less.

3. The method for enhancing the detergency of a liquid detergent composition for textile products according to claim 1 or 2, wherein the pH of the cleaning liquid at 20°C is 5.0 or more and 9.0 or less.

4. 3. The method for enhancing the detergency of a liquid detergent composition for textile products according to claim 1 or 2, wherein component (A1) is at least one selected from the group consisting of alkali metal sulfates, alkaline earth metal sulfates, alkali metal hydrogen sulfates, alkaline earth metal hydrogen sulfates, alkali metal chlorides, and alkaline earth metal chlorides.

5. A cleaning adjuvant composition for use in a liquid detergent composition for textile products, the cleaning adjuvant composition comprising (A1) 30% by mass or more and 100% by mass or less of a water-soluble inorganic salt.

6. The cleaning adjuvant composition according to claim 5, wherein the cleaning adjuvant composition is in the form of particles with an average particle size of 1.0 mm or more and 20 mm or less.

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