Detergent composition for textile products

Abstract

To provide a detergent composition for fiber products that effectively kills bacteria, including E. coli, and superbly bleaches out bacteria-derived stains on fiber products, and a method for cleaning fiber products.SOLUTION: A detergent composition for fiber products contains the following component (a), component (b), component (c), and water, with a pH of 1 or more and 5 or less at 25°C. Component (a): at least one compound selected from the following component (a1), component (a2), component (a3), and component (a4). Component (a1): quaternary ammonium salt. Component (a2): alkyl amine having 14 or more carbon atoms. Component (a3): alkyl amine oxide having 14 or more carbon atoms. Component (a4): bispyridinium compound. Component (b): compound represented by the general formula (b1): R1b-O-(EO)n-H (b1) [where R1b is a C8-24 hydrocarbon group, EO is an ethyleneoxy group, n is an average number of added moles, representing a number of 0 or more and less than 10]. Component (c): acid agent.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a detergent composition for textile products and a method for cleaning textile products. [Background technology]

[0002] Detergents containing surfactants are used to wash textile products such as clothing. In recent years, with the increasing awareness of hygiene among consumers, there has been growing concern about bacteria on the surface of textiles and the stains they cause, and research is being conducted on adding sterilization and disinfection effects along with cleaning. E. coli is often used as a criterion when evaluating sterilization and disinfection effects, and the number of E. coli can be said to be an indicator of the hygiene level of the environment. Therefore, it is thought that sterilizing bacteria, including E. coli, in the washing of textile products can provide consumers with more hygienic textile products. Furthermore, by also removing visible stains caused by bacteria, it is possible to improve consumers' sense of hygiene.

[0003] Patent Document 1 discloses a liquid laundry detergent composition containing (A) component: hydroxycarboxylic acid, (B) component: at least one antibacterial agent selected from the group consisting of (b-1), (b-2), and (b-3) components, and (C) component: nonionic surfactant, wherein the content of component (A) is 5% by mass or more of the total mass of the liquid laundry detergent composition, and the pH at 25°C is 2 to 6. Patent Document 2 discloses a cleaning agent composition for hard surfaces containing alkane bispyridinium as a quaternary ammonium salt, a C10 alcohol ethoxylate (with 5 moles of ethyleneoxy groups added) as a nonionic surfactant, and citric acid as an acid, with a pH of approximately 3. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2018-188641 [Patent Document 2] European Patent Application Publication No. 3771338 Specification Summary of the Invention Problems to be Solved by the Invention

[0005] However, with conventional sterilization techniques using cationic surfactants known for use in cleaning textile products, it is difficult to sterilize Escherichia coli, and the removal of visually recognizable stains derived from bacteria is also insufficient. The present invention provides a detergent composition for textile products that has an excellent bactericidal effect against bacteria including Escherichia coli and is excellent in decolorizing bacteria-derived stains attached to textile products, and a method for cleaning textile products. Means for Solving the Problems

[0006] The present invention relates to a detergent composition for textile products, which contains the following component (a), component (b), component (c), and water, and has a pH of 1 or more and 5 or less at 25°C. Component (a): One or more compounds selected from the following component (a1), component (a2), component (a3), and component (a4) Component (a1): Quaternary ammonium salt Component (a2): Alkylamine having 14 or more carbon atoms Component (a3): Alkylamine oxide having 14 or more carbon atoms Component (a4): Bispyridinium compound Component (b): Compound represented by the following general formula (b1) R 1b -O-(EO) n -H (b1) [In the formula, R 1b is a hydrocarbon group having 8 to 24 carbon atoms, EO is an ethyleneoxy group, n is an average added mole number, and is a number of 0 or more and less than 10.] Component (c): Acid agent

[0007] The present invention also relates to a method for cleaning textile products, which comprises cleaning a textile product with a cleaning liquid obtained by mixing the detergent composition for textile products of the present invention and water. Effects of the Invention

[0008] The present invention provides a detergent composition for textile products and a method for cleaning textile products, which are excellent in sterilizing bacteria, including E. coli, and in decolorizing bacteria-derived stains attached to textile products. [Modes for carrying out the invention]

[0009] <Detergent composition for textile products> The reason why the present invention's detergent composition for textile products exhibits excellent bactericidal effects against bacteria, including E. coli, and is also excellent at decolorizing bacterial stains attached to textile products is not entirely clear, but is presumed to be as follows: The surface components of E. coli and bacterial stains attached to fibers are both thought to be mainly composed of polysaccharides. In the present invention's detergent composition for textile products, by making the pH acidic, the pH of the diluted detergent solution is also maintained as acidic, and when fibers with bacterial stains are washed with this detergent solution, it becomes possible to remove the pigment components contained in the bacteria. Furthermore, in the present invention's detergent composition for textile products, it is thought that the bactericidal performance against E. coli is improved by acting specific component (a) and specific component (b) under acidic conditions.

[0010] <(a) Components> Component (a) of the present invention is one or more compounds selected from the following components (a1), (a2), (a3), and (a4). (a1) Ingredients: Quaternary ammonium salt (a2) Component: Alkylamine with 14 or more carbon atoms (a3) Component: Alkylamine oxide with 14 or more carbon atoms (a4) Components: Bispyridinium compound

[0011] (a1) As for the component, a compound represented by the following general formula (a1) is preferred from the viewpoint of sterilization and decolorization effect.

[0012] [ka]

[0013] [In the formula, R1a is a chain hydrocarbon group having 8 to 24 carbon atoms, and R 2a is a chain hydrocarbon group having 8 to 24 carbon atoms, an alkyl group having 1 to 3 carbon atoms, or a hydroxyalkyl group having 1 to 3 carbon atoms, and R 3a and R 4a are each independently an alkyl group having 1 to 3 carbon atoms, or a hydroxyalkyl group having 1 to 3 carbon atoms, and X - is an alkyl sulfate ion having 1 to 3 carbon atoms, or a halide ion.]

[0014] In general formula (a1), R 1a From the viewpoint of bactericidal and decolorizing effects, the number of carbon atoms in the chain hydrocarbon group is preferably 9 or more, more preferably 10 or more, and preferably 18 or less, more preferably 14 or less, still more preferably 12 or less. R 1a From the viewpoint of bactericidal and decolorizing effects, the chain hydrocarbon group is preferably an alkyl group or an alkenyl group, more preferably an alkyl group.

[0015] R 2a is a chain hydrocarbon group having 8 to 24 carbon atoms, an alkyl group having 1 to 3 carbon atoms, or a hydroxyalkyl group having 1 to 3 carbon atoms, and R 2a From the viewpoint of bactericidal and decolorizing effects, the number of carbon atoms in the chain hydrocarbon group is preferably 9 or more, more preferably 10 or more, and preferably 18 or less, more preferably 14 or less, still more preferably 12 or less. R 2a From the viewpoint of bactericidal and decolorizing effects, the chain hydrocarbon group is preferably an alkyl group or an alkenyl group, more preferably an alkyl group.

[0016] R 3a , R 4a are each independently a methyl group, an ethyl group, or a hydroxyalkyl group having 1 to 3 carbon atoms.

[0017] R 1a , R 2aSpecific examples of the chain-like hydrocarbon group are groups selected from octyl, nonyl, decyl, dodecyl, tetradecyl, and hexadecyl groups. From the viewpoint of bactericidal and decolorizing effects, groups selected from dodecyl, tetradecyl, and decyl groups are preferred, and decyl groups are more preferred.

[0018] Specific examples of hydroxyalkyl groups having 1 to 3 carbon atoms include hydroxymethyl, hydroxyethyl, and hydroxypropyl groups. - CH3SO4 - CH3CH2SO4 - , or halide ions. Also X - This may be derived from the acid agent which is component (c) of the present invention.

[0019] More specific compounds of the compound represented by the general formula (a1) above include one or more compounds selected from N,N-didecyl-N-ethyl-N-methylammonium salt, N-tetradecyl-N-ethyl-N,N-dimethylammonium salt, trimethylhexadecylammonium salt, N,N-dioctyl-N,N-dimethylammonium salt, N,N-dinonyl-N,N-dimethylammonium salt, N,N-didecyl-N,N-dimethylammonium salt, N,N-dioctyl-N-ethyl-N-methylammonium salt, and N,N-dinonyl-N-ethyl-N-methylammonium salt, and a combination of mono-long-chain ammonium salts and di-long-chain ammonium salts can also be used. The counterions for these salts are CH3SO4 - CH3CH2SO4 - or halide ions such as chlorine ions.

[0020] (a1) The component is, from the viewpoint of sterilization and decolorization effect, (a11) in general formula (a1), R 1a R is a chain-type hydrocarbon group having 8 to 24 carbon atoms, 2a It is preferable that the compound contains a chain-like hydrocarbon group having 8 to 24 carbon atoms (hereinafter referred to as component (a11)). In component (a11), in general formula (a1), R 1a , and R2a The number of carbon atoms in each chain-like hydrocarbon group is preferably 9 or more, more preferably 10 or more, preferably 18 or less, more preferably 14 or less, and even more preferably 12 or less, from the viewpoint of sterilization and decolorization effects. In component (a11), in general formula (a1), R 1a , and R 2a From the viewpoint of bactericidal and decolorizing effects, the chain-like hydrocarbon group is preferably an alkyl group or an alkenyl group, with alkyl groups being more preferred. In component (a11), in general formula (a1), R 3a , R 4a , and X - The preferred range is the same as the range described above for component (a1) from the viewpoint of sterilization and decolorization effect.

[0021] (a2) Component is an alkylamine having 14 or more carbon atoms. (a2) The component is one or more selected from monoalkylamines, dialkylamines, and trialkylamines from the viewpoint of sterilization and decolorization effects, with monoalkylamines being preferred. (a2) The number of carbon atoms in the alkyl group of component (a2) is 14 or more, preferably 20 or less, more preferably 18 or less, and even more preferably 16 or less, from the viewpoint of sterilization and decolorization effect. The alkyl group is linear or branched, preferably linear.

[0022] (a3) Component is an alkylamine oxide having 14 or more carbon atoms. (a3) From the viewpoint of sterilization and decolorization effect, the compound represented by the following general formula (a3) ​​is preferred.

[0023] [ka]

[0024] [In the formula, R 4a R represents an alkyl group with 14 or more carbon atoms. 5a and R 6arepresents an alkyl group having 1 to 3 carbon atoms, either identical or different. D represents a -NHC(=O)- group or a -C(=O)NH- group, and E represents an alkylene group having 1 to 5 carbon atoms. q and p represent either q=0 and p=0 or q=1 and p=1.

[0025] In the above general formula (a3), when q=1 and p=1, R 4a From the viewpoint of sterilization and decolorization effect, the alkyl group has 14 or more carbon atoms, preferably 20 or fewer, preferably 18 or fewer, and more preferably 16 or fewer carbon atoms. Also, if q=0 and p=0, R 4a From the viewpoint of sterilization and decolorization effect, the alkyl group has 14 or more carbon atoms, preferably 20 or fewer, preferably 18 or fewer, and more preferably 16 or fewer carbon atoms. R 4a The alkyl group is either linear or branched, preferably linear. In this invention, q=0 and p=0 are preferred. 5a and R 6a Preferably, it is a methyl group having 1 carbon atom.

[0026] (a4) Component is a bispyridinium compound. Examples of bispyridinium compounds include those described in British Patent No. 1533952, Japanese Unexamined Patent Publication No. 52-105228, and International Publication No. 2014 / 100807. Specifically, from the viewpoint of bactericidal and decolorizing effects, compounds represented by the following general formula (a41) and compounds represented by the following general formula (a42) are preferred as bispyridinium compounds.

[0027] [ka]

[0028] [In the formula, Y is an alkylene or alkenylene group having 4 to 18 carbon atoms, and R 7aEach of the following represents an alkyl group having 6 to 18 carbon atoms, a cycloalkyl group having 5 to 7 carbon atoms, or a phenyl group with or without halogen substitution, and A is an anion. q is 1 or 2, r is 1 or 2, and q × r = 2.

[0029] A is a monovalent or divalent anion, such as chlorides, bromides, phosphates, orthosilicates, organic acids, for example, formula R 8a It can be an anion from compounds such as organic acids containing -COO- or alkyl (1 to 40 carbon atoms) sulfonic acids. Here, R 8a A is hydrogen, hydroxyl, or an alkyl group having 1 to 40 carbon atoms. A may be derived from the acid agent which is component (c) of the present invention.

[0030] From the perspective of bactericidal effect, organic acids corresponding to the anion of A include, for example, acetic acid, propionic acid, phosphoric acid, glycolic acid, pyruvic acid, oxalic acid, maleic acid, malonic acid, succinic acid, fumaric acid, tartaric acid, citric acid, benzoic acid, cinnamic acid, mandelic acid, methanesulfonic acid, ethanesulfonic acid, p-toluenesulfonic acid, glycyrrhizic acid, salicylic acid, stearic acid, phosphonic acid, trifluoroacetic acid, cyanoacetic acid, 4-cyanobenzoic acid, 2-chlorobenzoic acid, 2-nitrobenzoic acid, phenoxyacetic acid, and benzenesulfonic acid.

[0031] From the viewpoint of bactericidal and decolorizing effects, preferred bispyridinium compounds are compounds of general formula (a42), and furthermore, octenidine dihydrochloride (in general formula (a42), R 7a This compound has n-octyl groups, Y is an n-decenyl group, A is Cl, q is 1, and r is 2 (CAS number 70775-75-6). In the textile cleaning agent composition of the present invention, component (a4) may be used alone or in combination of two or more types.

[0032] (a) Component is preferably one or more selected from component (a1), component (a2), and component (a4) from the viewpoint of sterilization and decolorization effect, more preferably one or more selected from component (a1) and component (a2), and even more preferably component (a1) containing component (a11).

[0033] <(b) Component> (b) Component: A compound represented by the following general formula (b1). R 1b -O-(EO) n -H (b1) [In the formula, R 1b is a hydrocarbon group with 8 to 24 carbon atoms, EO is an ethylene oxy group, and n is the average number of added moles, which is a number between 0 and 10.

[0034] In general formula (b1), R 1b From the viewpoint of sterilization and decolorization effect, the number of carbon atoms is preferably 10 or more, more preferably 12 or more, preferably 18 or less, more preferably 16 or less, and even more preferably 14 or less. R 1b From the viewpoint of sterilization and decolorization effects, the group is a hydrocarbon group, preferably a linear or branched alkyl group, or a linear or branched alkenyl group, more preferably a linear or branched alkyl group, and even more preferably a linear alkyl group. From the viewpoint of sterilization and decolorization effect, n is 0 or greater, less than 10, preferably 8 or less, more preferably 6 or less, even more preferably 4 or less, and even more preferably 3 or less.

[0035] The present invention's detergent composition for textile products may use component (b) alone or in combination of two or more components.

[0036] <(c) component> Component (c) of the present invention is an acidulant. (c) As for the acidifying agent of component (c), one or more types selected from organic acids and inorganic acids are recommended from the viewpoint of sterilization and decolorization effects. As for organic acids, from the viewpoint of sterilization and decolorization effects, one or more can be selected from citric acid, malic acid, acetic acid, succinic acid, tartaric acid, fumaric acid, lactic acid, propionic acid, oxalic acid, glutaric acid, adipic acid, gallic acid, melitic acid, cinnamic acid, salicylic acid, phthalic acid, benzoic acid, pyruvic acid, oxaloacetic acid, and aconitic acid. Inorganic acids include one or more selected from hydrochloric acid, phosphoric acid, sulfuric acid, boric acid, and carbonic acid, from the viewpoint of sterilization and decolorization effects.

[0037] (c) The component is preferably an organic acid from the viewpoint of sterilization and decolorization effect, more preferably one or more selected from citric acid, malic acid, acetic acid, lactic acid, tartaric acid, and succinic acid, even more preferably one or more selected from citric acid, malic acid, and acetic acid, and even more preferably one or more selected from citric acid and malic acid.

[0038] <Composition, etc.> In the textile product cleaning agent composition of the present invention, the content of component (a) is 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 even more preferably 1.5% by mass or less, from the viewpoint of sterilization and decolorization effect. In the present invention, if component (a) includes component (a1), the mass of component (a1) shall be the value converted to the ethyl sulfate salt. Furthermore, if component (a) includes component (a4), the mass of component (a4) shall be the value converted to the hydrochloride salt.

[0039] In the textile product cleaning agent composition of the present invention, if component (a) is component (a1) containing component (a11), the content of component (a11) in component (a1) is preferably 20% by mass or more, more preferably 50% by mass or more, even more preferably 60% by mass or more, even more preferably 80% by mass or more, and preferably 100% by mass or less, from the viewpoint of sterilization and decolorization effect.

[0040] In the textile product cleaning agent composition of the present invention, the content of component (b) is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, even more preferably 1% by mass or more, even more preferably 5% 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 even more preferably 7% by mass or less.

[0041] In the textile product cleaning agent composition of the present invention, the mass ratio (a) / (b) of the content of component (a) to the content of component (b) is preferably 0.01 or more, more preferably 0.03 or more, even more preferably 0.05 or more, even more preferably 0.1 or more, even more preferably 0.2 or more, and preferably 2 or less, more preferably 1.8 or less, and even more preferably 1.5 or less, from the viewpoint of sterilization and decolorization effect.

[0042] In the textile detergent composition of the present invention, the content of component (c) is preferably 1% by mass or more, more preferably 2.5% by mass or more, even more preferably 5% by mass or more, even more preferably 7.5% by mass or more, even more preferably 10% by mass or more, and preferably 20% by mass or less, more preferably 18% by mass or less, and even more preferably 15% by mass or less, from the viewpoint of sterilization and decolorization effect. In the textile detergent composition of the present invention, component (c) may be contained as a counterion of the salts of components (a1) and (a4), but its amount is included in the content of component (c).

[0043] In the textile product cleaning agent composition of the present invention, the mass ratio (b) / (c) of the content of component (b) to the content of component (c) is preferably 0.01 or more, more preferably 0.05 or more, even more preferably 0.1 or more, and preferably 5 or less, more preferably 3 or less, even more preferably 2 or less, even more preferably 1.5 or less, even more preferably 1 or less, and even more preferably 0.5 or less.

[0044] The textile detergent composition of the present invention contains water. The water can be deionized water, tap water, purified water, etc. The water can be used as the remainder of the composition in an amount such that the overall composition of the composition is 100% by mass. In the textile detergent composition of the present invention, the water content is preferably 10% by mass or more, more preferably 20% by mass or more, even more preferably 30% by mass or more, and preferably 90% by mass or less, and more preferably 80% by mass or less, from the viewpoint of sterilization and decolorization effect.

[0045] The textile cleaning agent composition of the present invention may contain, as an optional component, the following components (1) to (14) which are known to be used in detergent or fabric softener applications, to the extent that they do not affect the effects of the present invention.

[0046] (1) Surfactants As for surfactants, there are no particular limitations from the viewpoint of sterilization and decolorization effects, but examples include one or more selected from (1-1) anionic surfactants (hereinafter also referred to as (1-1) component), (1-2) nonionic surfactants other than component (b) (hereinafter also referred to as (1-2) component), and (1-3) amphoteric surfactants other than component (a3) ​​(hereinafter also referred to as (1-3) component).

[0047] (1-1) Examples of anionic surfactants include one or more selected from alkyl sulfates, alkenyl sulfates, polyoxyalkylene alkyl ether sulfates, polyoxyalkylene alkenyl ether sulfates, alkylbenzene sulfonic acid, alkenylbenzene sulfonic acid, alkane sulfonic acid, α-olefin sulfonic acid, internal olefin sulfonic acid, alkyl or dialkyl sulfosuccinic acid, alkenyl or dialkenyl sulfosuccinic acid, polyoxyalkylene alkyl or polyoxyalkylenedialkyl sulfosuccinic acid, polyoxyalkylene alkyl or polyoxyalkylenedialkyl sulfosuccinic acid, alkyl succinic acid, alkenyl succinic acid, fatty acids, and salts thereof, from the viewpoint of bactericidal and decolorizing effects. From the viewpoint of bactericidal and decolorizing effects, alkali metal salts such as sodium salts and potassium salts are preferred as salts of anionic surfactants.

[0048] (1-2) Nonionic surfactants other than component (b) include one or more selected from alkyl monoglyceryl ethers, polyoxyalkylene monoalkyl or alkenyl ethers (excluding component (b)), polyoxyalkylene fatty acid esters, sorbitan-based nonionic surfactants, aliphatic alkanolamides, fatty acid monoglycerides, and sucrose fatty acid esters, from the viewpoint of bactericidal and decolorizing effects.

[0049] (1-3) Amphoteric surfactants other than component (a3) ​​include one or more surfactants selected from betaine-type surfactants and amine oxide-type surfactants from the viewpoint of bactericidal and decolorizing effects. Component (1-3) specifically includes one or more surfactants selected from sulfobetaine, carbobetine, and amine oxide (excluding component (a3)) from the viewpoint of bactericidal and decolorizing effects.

[0050] Examples of sulfobetaines include N-alkyl-N,N-dimethyl-N-sulfopropylammonium sulfobetaine, N-alkyl-N,N-dimethyl-N-(2-hydroxysulfopropyl)ammonium 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, all of which have a bactericidal and decolorizing effect, and are preferably those in which the alkyl group has 10 to 18 carbon atoms.

[0051] Examples of carbobetaines that have bactericidal and decolorizing effects include N-alkyl-N,N-dimethyl-N-carboxymethylammonium betaine, in which the alkyl group has 10 to 18 carbon atoms, and compounds represented by the following general formula (1).

[0052] [ka]

[0053] [In the formula, R 1 R represents an alkyl or alkenyl group having 7 to 21 carbon atoms, 2 R indicates a propylene group, 3 and R 4 Each of these independently represents an alkyl group having 1 to 3 carbon atoms.

[0054] Examples of amine oxides (excluding component (a3)) include compounds of the following general formula (2).

[0055] [ka]

[0056] [In the formula, R 5 R represents a hydrocarbon group having 7 to 10 carbon atoms, preferably an alkyl group or alkenyl group, more preferably an alkyl group, from the viewpoint of sterilization and decolorization effect. 6 and R 7 represents an alkyl group having 1 to 3 carbon atoms, either identical or different. D represents a -NHC(=O)- group or a -C(=O)NH- group, and E represents an alkylene group having 1 to 5 carbon atoms. m and p represent m=0 and p=0 or m=1 and p=1.

[0057] (2) pH adjuster From the standpoint of sterilization and decolorization effects, an alkaline agent may be included as a pH adjuster. From the viewpoint of bactericidal and decolorizing effects, alkaline agents include inorganic alkaline agents such as alkali metal hydroxides and alkali metal carbonates, and alkanolamines in which one to three groups bonded to the nitrogen atom are alkanol groups having 2 to 4 carbon atoms, and the remaining groups are alkyl groups having 1 to 4 carbon atoms or hydrogen atoms. From the viewpoint of bactericidal and decolorizing effects, among these, hydroxyalkyl groups and more preferably hydroxyethyl groups are preferred for the alkanol groups. From the viewpoint of bactericidal and decolorizing effects, hydrogen atoms or methyl groups other than the alkanol groups are preferred, and hydrogen atoms are particularly preferred. Examples of alkanolamines from the viewpoint of bactericidal and decolorizing effects include alkanolamines such as 2-aminoethanol, N-methylethanolamine, N,N-dimethylethanolamine, N,N-diethylethanolamine, diethanolamine, N-methyldiethanolamine, and triethanolamine.

[0058] (3) Chelating agents From the viewpoint of sterilization and decolorization effects, specific examples of chelating agents include, for example, aminopolyacetic acids such as ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, and hydroxyethyliminodiacetic acid, or their salts, 1-hydroxyethylidene-1,1-diphosphonic acid, diethylenetriaminepenta(methylenephosphonic acid), and their alkali metal or lower amine salts.

[0059] (4) Anti-redeposition agents and / or polymer-based dispersants From the viewpoint of sterilization and decolorization effects, examples of anti-redeposition agents and / or polymer-based dispersants include polyacrylic acid, polymaleic acid, and carboxymethylcellulose.

[0060] (5) Bleach From the standpoint of sterilization and decolorization effects, examples of bleaching agents include hydrogen peroxide, sodium percarbonate, and sodium perborate.

[0061] (6) Bleach activator From the viewpoint of sterilization and decolorization effects, examples of bleach activators include tetraacetylethylenediamine and bleach activators represented by general formulas (I-2) to (I-7) of Japanese Patent Publication No. 6-316700.

[0062] (7) Enzymes From the standpoint of sterilization and decolorization effects, the enzymes should include one or more enzymes selected from amylase, sucrase, maltase, lactase, pullulanase, fructofuranosidase, cellulase, protease, and lipase.

[0063] (8) Fluorescent dyes From the perspective of sterilization and bleaching effects, examples of fluorescent dyes include commercially available fluorescent dyes such as Chinopearl CBS (trade name, manufactured by Ciba Specialty Chemicals) and Whitex SA (trade name, manufactured by Sumitomo Chemical).

[0064] (9) Antioxidants From the viewpoint of sterilization and decolorization effects, known antioxidant compounds such as butylhydroxytoluene (common name: BHT), butylhydroxyanisole (common name: BHA), distyrenated cresol, ascorbic acid (common name: vitamin C), tocopherol (common name: vitamin E), coffee bean extract (chlorogenic acid), green tea extract (catechin), or known inorganic salts such as sodium sulfite and sodium bisulfite can be used as antioxidants.

[0065] (10) From the standpoint of sterilization and decolorization effect, dyes, fragrances, antibacterial agents such as dichrosan, UV inhibitors, and defoaming agents such as silicones

[0066] (11) Organic solvents having hydroxyl groups From the standpoint of sterilization and decolorization effects, one or more compounds selected from the following components (11-1) to (11-6) are used as organic solvents containing hydroxyl groups.

[0067] (11-1) Components: Monohydric alcohol having an aliphatic hydrocarbon group with 2 to 6 carbon atoms. (11-1) As components, from the viewpoint of bactericidal and decolorizing effects, monohydric alcohols selected from ethanol, 1-propanol, 2-propanol, and 1-butanol are examples.

[0068] (11-2) Components: Divalent to Hexavalent alcohols with 2 to 6 carbon atoms. (11-2) As components, from the viewpoint of bactericidal and decolorizing effects, examples include dihydric or trihydric alcohols selected from ethylene glycol, propylene glycol, butylene glycol, 2-methyl-2,4-pentanediol, 1,5-pentanediol, 1,6-hexanediol, and glycerin. 2-methyl-2,4-pentanediol is also called hexylene glycol.

[0069] (11-3) Components: Polyalkylene glycol containing alkylene glycol units with 2 to 4 carbon atoms. (11-3) Examples of components include polyalkylene glycols selected from diethylene glycol, triethylene glycol, tetraethylene glycol, dipropylene glycol, tripropylene glycol, polyethylene glycol with a weight-average molecular weight of 400 to 4000, and polypropylene glycol with a weight-average molecular weight of 400 to 4000, from the viewpoint of sterilization and decolorization effects.

[0070] (11-4) Components: Monoalkyl ether of (mono or poly)alkylene glycol having alkylene glycol units with 2 to 4 carbon atoms and alkyl groups with 1 to 4 carbon atoms. (11-4) As components, from the viewpoint of bactericidal and decolorizing effects, for example, compounds selected from diethylene glycol monomethyl ether, triethylene glycol monomethyl ether, diethylene glycol monoethyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, tripropylene glycol monomethyl ether, diethylene glycol monobutyl ether, 1-methoxy-2-propanol, and 1-ethoxy-2-propanol are mentioned.

[0071] (11-5) Components: Alkyl glyceryl ether having an alkyl group with 1 to 8 carbon atoms (11-5) Examples of alkyl glyceryl ethers selected from 1-methylglyceryl ether, 2-methylglyceryl ether, 1,3-dimethylglyceryl ether, 1-ethylglyceryl ether, 1,3-diethylglyceryl ether, triethylglyceryl ether, 1-pentylglyceryl ether, 2-pentylglyceryl ether, 1-octylglyceryl ether, and 2-ethylhexylglyceryl ether as components include alkyl glyceryl ethers selected from the above.

[0072] (11-6) Components: Aromatic alkyl ether of (mono or poly)alkylene glycol having alkylene glycol units with 2 or 3 carbon atoms. (11-6) As components, from the viewpoint of bactericidal and decolorizing effects, for example, compounds selected from 2-phenoxyethanol, diethylene glycol monophenyl ether, triethylene glycol monophenyl ether, polyethylene glycol monophenyl ether with an average molecular weight of approximately 480, 2-benzyloxyethanol, and diethylene glycol monobenzyl ether can be mentioned.

[0073] In components (11-4) and (11-6) above, the term "(mono or poly)alkylene glycol" means monoalkylene glycol or polyalkylene glycol. Furthermore, "polyalkylene glycol" means containing two to nine alkylene glycol units.

[0074] (12) Hydrotrope From the viewpoint of bactericidal and decolorizing effects, hydrotropes are organic compounds having an anionic group, and further include alkylbenzene carboxylic acids or alkylbenzene sulfonic acids or salts thereof that contain one or two alkyl groups selected from methyl, ethyl, or propyl groups, and have one sulfonic acid group or carboxylic acid group, as well as benzoic acid or salts thereof. More specifically from the viewpoint of bactericidal and decolorizing effects, these include p-toluenesulfonic acid, cumenesulfonic acid, metaxylenesulfonic acid, and benzoic acid, and alkali metal salts are preferred.

[0075] (13)Fragrance From the perspective of sterilization and decolorization effects, fragrances have a masking effect and, in some cases, can even be a base material with deodorizing properties of their own. As for fragrances, from the viewpoint of antibacterial and decolorizing effects, for example, fragrances described in "Basic Knowledge of Fragrances and Perfumery, edited by Motoki Nakajima, published by Sangyo Tosho Co., Ltd., 4th printing April 20, 2005" and fragrances described in Japanese Patent Publication No. 10-507793 can be used. In addition, the fragrance technology described in Japanese Patent Publication No. 2014-213072 can be used, and silicate ester fragrances and microencapsulated fragrances can also be used.

[0076] (14) Deodorizing base material From the viewpoint of sterilization and decolorization effects, a polyhydroxyamine compound described in Japanese Patent Publication No. 2018-29836 can be used as a deodorizing base material. Examples of polyhydroxyamine compounds include tris(hydroxymethyl)aminomethane, 2-amino-1,3-propanediol, 2-amino-2-methyl-1,3-propanediol, 2-amino-2-ethyl-1,3-propanediol, 2-amino-2-hydroxyethyl-1,3-propanediol, and these combined with inorganic acids such as hydrochloric acid.

[0077] The pH at 25°C of the detergent composition for textile products of the present invention is 1 or higher, preferably 1.2 or higher, more preferably 1.5 or higher, and 5 or lower, preferably 4 or lower, more preferably 3 or lower, still more preferably 2 or lower, from the viewpoint of bactericidal and decolorizing effects. This pH is a value measured at 25°C using a glass electrode. Specifically, it is measured by the following method. <Method for Measuring pH> A pH electrode (Model 6367) is pre-calibrated with phthalate buffer solution (pH 4.01), phosphate standard solution (pH 6.84), and borate standard solution (pH 9.18) using a pH meter D-52 manufactured by Horiba, Ltd., and sufficiently rinsed with ion-exchanged water. The pH electrode calibrated and washed as described above is placed in the detergent composition for textile products adjusted to a temperature of 25°C, and measurement is performed using the AUTO HOLD mode of the pH meter until the measured value becomes constant.

[0078] The viscosity at 20°C of the detergent composition for textile products of the present invention is preferably 10 mPa·s or higher, more preferably 20 mPa·s or higher, still more preferably 30 mPa·s or higher, and preferably 1,000 mPa·s or lower, more preferably 600 mPa·s or lower, still more preferably 300 mPa·s or lower, from the viewpoint of bactericidal and decolorizing effects. Specifically, it is measured by the following method. <Method for Measuring Viscosity> Viscosity is measured with a Brookfield viscometer. A rotor suitable for the viscosity is selected. The rotor is rotated at a rotation speed of 60 r / min, and the viscosity 60 seconds after the start of rotation is taken as the viscosity of the detergent composition for textile products.

[0079] The detergent composition for textile products of the present invention is used for washing textile products such as clothing, towels, bedding, textile products for bedding (sheets, pillowcases, etc.), and masks. Washable textile products other than these can also be targeted. The material of the textile product is not particularly limited, and examples thereof include natural fibers such as cotton, hemp, wool, and silk, synthetic fibers such as polyester and acrylic, and blended fibers thereof. Among these, cotton fibers or blended fibers of cotton fibers and other fibers are preferred.

[0080] The present invention's detergent composition for textile products exhibits excellent bactericidal effects against bacteria, including E. coli, and is also excellent at decolorizing carotenoid pigments derived from bacteria that adhere to textile products. Therefore, it can be used for sterilizing textile products not only in general households but also in medical and nursing care settings. Examples of bacteria other than Escherichia coli targeted by the textile product cleaning agent composition of the present invention include one or more species selected from the following: Moraxella, Micrococcus, Methylobacterium, Acinetobacter, Pseudomonas, Bacillus, Sphingomonas, Ralstonia, Cupriavidus, Cyclobacter, Serratia, Escherichia, Staphylococcus, and Burkholderia.

[0081] The textile cleaning agent composition of the present invention may be a textile cleaning agent composition comprising component (a), component (b), component (c), and water. In this textile cleaning agent composition, the content and mass ratio of each component described above can be replaced with the amount of each component blended.

[0082] <How to wash textile products> The present invention provides a method for cleaning textile products, comprising cleaning the textile products with a cleaning solution obtained by mixing the present invention's cleaning agent composition for textile products with water, and then rinsing the textile products with water. The method for cleaning textile products of the present invention can be appropriately applied to the embodiments described in the description of the detergent composition of the present invention.

[0083] In the cleaning solution of the present invention, when mixing the textile product cleaning agent composition of the present invention with water, the amount of water used is such that, from the viewpoint of sterilization and decolorization effect, the total amount of the textile product cleaning agent composition of the present invention per 1 liter of water is preferably 0.2 g or more, more preferably 0.4 g or more, even more preferably 0.8 g or more, preferably 5 g or less, more preferably 4 g or less, and even more preferably 3 g or less.

[0084] In the cleaning solution of the present invention, the hardness of the water mixed with the textile product cleaning agent composition of the present invention is, from the viewpoint of sterilization and decolorization effect, preferably 0.5°dH or higher, more preferably 1°dH or higher, even more preferably 1.5°dH or higher, and preferably 10°dH or lower, more preferably 8°dH or lower, and even more preferably 6°dH or lower, in German hardness. Furthermore, the cleaning solution may have a hardness within the aforementioned range.

[0085] Herein, German hardness (°dH) as used herein refers to the concentration of calcium and magnesium in water, expressed as a CaCO3 equivalent concentration of 1 mg / L (ppm) = approximately 0.056°dH (1°dH = 17.8 ppm). The calcium and magnesium concentrations required for this German hardness can be determined by chelation titration using disodium ethylenediaminetetraacetate. The specific method for measuring the German hardness of water used in this specification is shown below. <Method for measuring water hardness in Germany> 〔reagent〕 • 0.01 mol / l EDTA-2Na solution: A 0.01 mol / l aqueous solution of disodium ethylenediaminetetraacetate (titration solution, 0.01 M EDTA-Na2, manufactured by Sigma-Aldrich). ·Universal BT indicator (product name: Universal BT, manufactured by Dojindo Kagaku Kenkyusho Co., Ltd.) • Ammonia buffer solution for hardness measurement (a solution made by dissolving 67.5g of ammonium chloride in 570ml of 28w / v% ammonia water and diluting the total volume to 1000ml with deionized water). [Measuring hardness] (1) Take 20 ml of water to be used as a sample into a conical beaker using a volumetric pipette. (2) Add 2 ml of ammonia buffer solution for hardness measurement. (3) Add 0.5 ml of Universal BT indicator. Confirm that the solution is reddish-purple after adding the indicator. (4) While shaking the conical beaker well, add 0.01 mol / l EDTA·2Na solution dropwise from the burette, and the titration is terminated when the water sample turns blue. (5) The total hardness is calculated using the following formula. Hardness (°dH)=T×0.01×F×56.0774×100 / A T:0.01mol / l Titration amount of EDTA・2Na solution (mL) A: Sample volume (20 mL, volume of water used as the sample) F: Factor of 0.01 mol / l EDTA-2Na solution

[0086] Furthermore, the hardness of the water used in the washing method, such as the water used to prepare the washing solution and the water used for rinsing, can also be selected from a preferred range of water hardness containing the hardness components described in the textile product washing method of the present invention. The method for measuring water hardness can also be the same as that for measuring water hardness.

[0087] In the cleaning solution of the present invention, the content of component (a) is preferably 1 ppm or more, more preferably 3 ppm or more, even more preferably 5 ppm or more, and preferably 50 ppm or less, more preferably 30 ppm or less, and even more preferably 20 ppm or less, from the viewpoint of sterilization and decolorization effect.

[0088] In the cleaning solution of the present invention, the content of component (b) is preferably 1 ppm or more, more preferably 5 ppm or more, even more preferably 10 ppm or more, and preferably 200 ppm or less, more preferably 150 ppm or less, and even more preferably 100 ppm or less, from the viewpoint of sterilization and decolorization effect.

[0089] In the cleaning solution of the present invention, the content of component (c) is preferably 10 ppm or more, more preferably 25 ppm or more, even more preferably 50 ppm or more, and preferably 200 ppm or less, more preferably 180 ppm or less, and even more preferably 150 ppm or less, from the viewpoint of sterilization and decolorization effect. In the cleaning solution of the present invention, component (c) may be contained as a counterion of the salts of components (a1) and (a4), but its amount is included in the content of component (c).

[0090] In the cleaning solution of the present invention, the mass ratio (a) / (b) of the content of component (a) to the content of component (b) and the mass ratio (b) / (c) of the content of component (b) to the content of component (c) are preferably within the same range as described in the cleaning agent composition for textile products of the present invention.

[0091] From the viewpoint of sterilization and decolorization effect, the pH of the cleaning solution of the present invention at 25°C is preferably 3 or higher, more preferably 3.1 or higher, even more preferably 3.2 or higher, and preferably 6 or lower, more preferably 5 or lower, even more preferably 4 or lower, and even more preferably 3.5 or lower. The pH of the cleaning solution can be measured in the same manner as the pH measurement method described for the cleaning agent composition of the present invention.

[0092] In recent years, washing machines have become larger, and the bath ratio, which is the ratio of the volume of washing solution (liters) to the mass of textile products (kg), has tended to decrease. The bath ratio is preferably 5 or higher, more preferably 10 or higher, even more preferably 20 or higher, and preferably 100 or lower, more preferably 50 or lower, and even more preferably 30 or lower.

[0093] In the present invention's method for washing textile products, the washing time is preferably 1 minute or more, more preferably 3 minutes or more, even more preferably 5 minutes or more, and preferably 1 hour or less, more preferably 60 minutes or less, even more preferably 30 minutes or less, and even more preferably 10 minutes or less, from the viewpoint of sterilization and decolorization effect.

[0094] The present invention relates to a method for washing textile products, which is suitable for a rotary washing method, in which the textile products are immersed in a liquid used for scouring while being fed by rollers or the like. A rotary washing method refers to a washing method in which textile products that are not fixed to a rotating machine are rotated around a rotating shaft together with the washing liquid. A rotary washing method can be carried out using a rotary washing machine. Therefore, in the present invention, from the viewpoint of sterilization and decolorization effect, it is preferable to wash textile products using a rotary washing machine. Specifically, rotary washing machines include drum-type washing machines, pulsator-type washing machines, and agitator-type washing machines. These rotary washing machines can be those that are commercially available for household use.

[0095] The present invention provides an excellent method for washing textile products, which is effective in killing bacteria, including E. coli, attached to textile products, and is also excellent in decolorizing carotenoid pigments derived from bacteria attached to textile products. In other words, the present invention provides a method for sterilizing textile products, which involves killing bacteria, including E. coli, attached to textile products with a cleaning solution obtained by mixing the present invention's cleaning agent composition for textile products with water. In the method for cleaning textile products of the present invention, the target bacteria and textile products are the same as those described in the description of the cleaning agent composition for textile products of the present invention. [Examples]

[0096] <Composition ingredients> The following components were used in the examples and comparative examples. <(a) Components> a1-1: N,N-didecyl-N-ethyl-N-methylammonium ethyl sulfate, (a11) component a1-2: N-tetradecyl-N-ethyl-N,N-dimethylammonium ethyl sulfate, (a1) component a2-1: Tetradecylamine, (a2) component a3-1: Tetradecyldimethylamine oxide, (a3) ​​component a4-1: Octenidine hydrochloride

[0097] <(a') component (comparative component of (a) component)> ·a'-1: Dodecylamine ·a'-2: Dodecyldimethylamine oxide

[0098] <(b) Component> · b-1: 1-dodecanol, in general formula (b1), R 1b A compound in which C12 is a linear alkyl group and n is 0. • b-2: Polyoxyethylene (3) lauryl ether, in general formula (b1), R 1b A compound in which is a linear alkyl group with 12 carbon atoms and n is 3. • b-3: Polyoxyethylene (4) lauryl ether, in general formula (b1), R 1b A compound in which is a linear alkyl group with 12 carbon atoms and n is 4. ·b-4: Softanol 33 (manufactured by Nippon Shokubai Co., Ltd.), in general formula (b1), R 1b A compound in which n is a branched alkyl group with 12 to 14 carbon atoms.

[0099] <(b') component (comparison component of (b))> ·b'-1: Polyoxyethylene (10) lauryl ether, in general formula (b1), R 1b A compound in which n is a linear alkyl group with 12 carbon atoms and n is 10.

[0100] <(c) component> • c-1: Citric acid (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) • c-2: DL-malic acid (manufactured by Fujifilm Wako Pure Chemical Corporation) • c-3: Acetic acid (manufactured by Fujifilm Wako Pure Chemical Corporation)

[0101] The preparation methods for the textile detergent compositions shown in Tables 1 and 2 are as follows: A 5 cm long Teflon stirrer piece was placed in a 200 mL glass beaker and weighed. Next, deionized water, component (a) or (a'), component (b) or (b'), and component (c) were added according to the formulations shown in Tables 1 and 2. The mixture was heated in a water bath to 50°C and stirred at 100 r / min for 10 minutes to prepare each textile detergent composition. The pH of each prepared textile detergent composition at 25°C is shown in Tables 1 and 2.

[0102] [Bactericidal activity test] The reagents, bacterial strains, and equipment used were as follows. <Reagents used> • SCD agar medium "Nissui" (manufactured by Nippon Pharmaceutical Co., Ltd.) Nutrient agar medium • LP Diluent "Daigo" (manufactured by Shiotani MS Co., Ltd.) • Calcium chloride (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) • Magnesium chloride (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) <Bacterial strain used> • Escherichia coli (NBRC3972) <Equipment used> • 1 mL microtube • Spectrophotometer (PD-303S, manufactured by Apere Co., Ltd.)

[0103] Preparation of bacterial suspension 0.1 mL of a 10% glycerol suspension of the above bacterial strain, stored at -80°C, was spread onto nutrient agar medium using a convexing rod and incubated at 37°C for 18 hours. After incubation, the bacteria were collected using a platinum loop, suspended in autoclaved distilled water, and prepared to achieve an absorbance of 0.004 at a wavelength of 600 nm.

[0104] Preparation of a 100-fold diluted washing solution To prepare a 10-fold diluted cleaning solution, 1 g of each textile cleaning agent composition shown in Tables 1 and 2 was mixed with autoclaved distilled water to a total volume of 10 g. To prepare a 10-fold diluted cleaning solution, 10 g of the prepared 10-fold diluted cleaning solution was mixed with autoclaved distilled water to a total volume of 100 g. The pH of each 100-fold diluted cleaning solution was measured at 25°C. The results are shown in Tables 1 and 2.

[0105] Preparation of hard water Hardened water with a hardness of 30°dH was obtained by adding calcium chloride and magnesium chloride in a mass ratio of 8:2 to autoclaved distilled water.

[0106] (4) Sterilization operation In a 1 mL microtube, 0.7 mL of autoclaved distilled water, 0.1 mL of 30°dH hardness water prepared in (3), 0.1 mL of the 100-fold diluted washing solution prepared in (2), and 0.1 mL of the bacterial solution prepared in (1) were added. The mixture was stirred with a vortex mixer for 10 seconds and then allowed to stand for 10 minutes. After standing, 0.1 mL of the mixture was taken out and mixed with 0.9 mL of LP diluent. The mixture was stirred with a vortex mixer for 10 seconds to inactivate the washing solution. The number of bacteria was measured using SCD agar medium, and the bactericidal activity value was estimated using the following formula, based on the number of bacteria when the washing solution was not mixed in the above sterilization procedure. The results are shown in Tables 1 and 2. A higher bactericidal activity value indicates a better bactericidal effect. In Tables 1 and 2, a bactericidal activity value of ">4" means that the number of bacteria exceeds the detection limit. Bactericidal activity value = LogA - LogB A: Number of bacteria without washing solution B: Bacterial count when washing solution is used

[0107] [Decolorization test] Clothing (cotton towel, dyeing test material, manufactured by Tanigashira Shoten Co., Ltd.) dyed pink with a fungal dye, collected from a real household, was cut into 0.15g pieces to be used as a model cloth. In a 5mL tube, 2.4mL of autoclaved distilled water, 0.3mL of 30°dH hard water prepared in (3) in the same manner as the sterilization test, and 0.3mL of the 100-fold diluted washing solution prepared in (2) were added. The model cloth was then placed in the tube, which was fixed in a horizontal position, and shaken in a shaking incubator at 25°C and 150rpm for 10 minutes to perform the washing operation. After shaking, the model cloth was removed and transferred to a 5mL tube containing 2.7mL of autoclaved distilled water and 0.3mL of 30°dH hard water, and rinsed for 3 minutes in the same manner as the washing operation. After repeating the washing and rinsing operations four times each, the model cloth was removed and allowed to air dry. Using cotton fabric 2003 (manufactured by Tanigashira Shoten) as the standard fabric, four evaluators visually evaluated it based on the following evaluation criteria, and the average bleaching score was taken. A lower value indicates better bleaching performance. The results are shown in Tables 1 and 2. 1 point: Whiteness equivalent to standard fabric. 2. The amount of pink pigment has decreased compared to before bleaching. 3. The same amount of pink pigment remains as before bleaching.

[0108] [Table 1]

[0109] [Table 2]

Claims

1. It contains the following components (a), (b), (c), and water, and has a pH of 1 or more and 5 or less at 25°C. (b) The content of the component is 0.1% by mass or more and 7% by mass or less, A liquid detergent composition for textile products, wherein the mass ratio (a) / (b) of the content of component (a) to the content of component (b) is 0.05 or more and 2 or less, and the mass ratio (b) / (c) of the content of component (b) to the content of component (c) is 0.05 or more and 2 or less. (a) Components: Bispyridinium compounds represented by the following general formula (a41) or (a42) 【Chemistry 1】 [In the formula, Y is an alkylene or alkenylene group having 4 to 18 carbon atoms, R7a represents an alkyl group having 6 to 18 carbon atoms, a cycloalkyl group having 5 to 7 carbon atoms, or a phenyl group with or without halogen substitution, and A is an anion. q is 1 or 2, r is 1 or 2, and q × r = 2.] (b) Component: Compound represented by the following general formula (b1) 2 １ｂ --(EO) ｎ -2 (11) [In the formula, R １ｂ is a hydrocarbon group having 8 to 18 carbon atoms, EO is an ethylene oxy group, and n is the average number of added moles, which is between 0 and 4. (c) Ingredients: One or more acidifying agents selected from citric acid, malic acid, acetic acid, lactic acid, tartaric acid, and succinic acid.

2. (c) The liquid detergent composition for textile products according to claim 1, wherein the content of component is 5% by mass or more.

3. (b) The liquid detergent composition for textile products according to claim 1 or 2, wherein component (b) is a compound of general formula (b1) in which n is 3 or less.

4. A method for cleaning textile products, comprising cleaning textile products with a cleaning solution obtained by mixing the liquid cleaning agent composition for textile products described in claim 1 or 2 with water.

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