Liquid detergent composition for textile products

Abstract

To provide a liquid detergent composition for textile products and a cleaning method for textile products that can give textile products excellent antibacterial properties even when used in e.g. a washing step for cleaning and rinsing and has excellent cleaning power and foamability.SOLUTION: The present invention provides a liquid detergent composition for textile products which comprises (a) a surfactant, (b) an alcohol having 10 to 16 carbon atoms, and (c) an antibacterial compound having an aromatic ring (excluding quaternary ammonium salt).SELECTED DRAWING: None

Description

[Technical field]

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

[0002] In powder detergent compositions for textile products such as clothing, anionic surfactants and nonionic surfactants are used as cleaning components. Known anionic surfactants include anionic surfactants having a sulfonic acid group or a salt thereof, such as alkylbenzenesulfonate, and anionic surfactants having a sulfate ester salt, such as alkyl sulfate ester salt and polyoxyalkylene alkyl sulfate ester salt. Providers of laundry detergents use a plurality of anionic surfactants in combination from the viewpoint of cleaning power against various stains attached to clothing. On the other hand, as consumers become more conscious of hygiene, interest in odors and bacteria on clothing is also increasing. It is known that various bacteria that are resident on the skin and in the environment adhere to and grow on clothing. It is known that quaternary ammonium surfactants are used as a means of suppressing the growth of bacteria on clothing. In addition, aromatic chlorine compounds such as diclosan are also known to have antibacterial and bactericidal properties.

[0003] Patent Document 1 discloses a method for suppressing damp odor, which comprises contacting a textile product having a moisture content (the ratio of water impregnated with the total dry mass of the textile product) of 30 to 120 mass% after completion of spin-drying in a washing process with an aqueous composition containing (a) at least one antibacterial agent selected from cationic organic antibacterial agents, triclosan, and dichlorosan, (b) at least one surfactant selected from nonionic surfactants and amine oxide surfactants, and water, wherein the content of (a) is 0.05 to 10 mass% and the content of (b) is 0.01 to 10 mass%.

[0004] Patent Document 2 discloses a detergent composition characterized by containing surface-coated particles obtained by coating, with a surface coating agent, granulated particles that include a clay mineral carrying at least one substance selected from the group consisting of substances having antibacterial activity, substances having antioxidant activity, and substances having deodorizing activity.

[0005] Patent Document 3 discloses a liquid detergent composition for clothing, which comprises a copolymer (A) obtained from four kinds of vinyl monomers, namely, a vinyl monomer m1 having a tertiary amine structure in a side chain, a vinyl monomer m2 having a lactam structure, a vinyl monomer m3 having a linear or branched carbon chain having 1 to 30 carbon atoms, or an alicyclic hydrocarbon group or an aromatic hydrocarbon group in a side chain, and a vinyl monomer m4 having a polyalkylene oxide group having 2 to 4 carbon atoms in a side chain, wherein the constituent amounts of each of the four kinds of monomers are within the ranges of 10 to 70 mol % for (m1), 10 to 70 mol % for (m2), 1 to 30 mol % for (m3), and 1 to 60 mol % for (m4) so ​​that the total amount is 100 mol %; a functional component (B) having at least one effect of bactericidal / antibacterial effect, deodorizing effect, and antioxidant effect; and a surfactant (C). [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2009-263812 A [Patent Document 2] JP 2004-204085 A [Patent Document 3] JP 2011-190368 A Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention provides a liquid detergent composition for textile products, which can impart excellent antibacterial properties to textile products even when used in a washing process including washing and rinsing, has excellent detergency and good foaming, and provides a method for cleaning textile products. [Means for solving the problem]

[0008] The present invention relates to a liquid detergent composition for textile products, which contains (a) a surfactant (hereinafter referred to as component (a)), (b) an alcohol having from 10 to 16 carbon atoms (hereinafter referred to as component (b)), and (c) an antibacterial compound having an aromatic ring (hereinafter referred to as component (c)).

[0009] The present invention also relates to a method for cleaning textile products, which comprises washing textile products with a cleaning liquid obtained by mixing the liquid detergent composition for textile products of the present invention with water, and then rinsing the textile products with water. Effect of the Invention

[0010] According to the present invention, a liquid detergent composition for textile products, which can impart excellent antibacterial properties to textile products even when used in a washing process including washing and rinsing, has excellent cleaning power and foams well, and a method for cleaning textile products is provided. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] [Liquid detergent composition for textile products] The liquid detergent composition for fabric products of the present invention contains a surfactant as component (a). The component (a) may be one or more surfactants selected from (a1) anionic surfactants (hereinafter referred to as component (a1)) and (a2) nonionic surfactants (hereinafter referred to as component (a2)).

[0012] Examples of the component (a1) include one or more anionic surfactants selected from internal olefin sulfonates having from 10 to 18 carbon atoms, sulfates having an alkyl or alkenyl group having from 10 to 24 carbon atoms, polyoxyalkylene alkyl or alkenyl ether sulfates having an alkyl or alkenyl group having from 10 to 24 carbon atoms, and sulfonates having an alkyl or alkenyl group having from 10 to 24 carbon atoms (excluding internal olefin sulfonates having from 10 to 18 carbon atoms).

[0013] An internal olefin sulfonate having 10 to 18 carbon atoms can be obtained by sulfonating an internal olefin having 10 to 18 carbon atoms. The internal olefin refers to an olefin in which a double bond is present inside the 2-position. For example, an internal olefin can be obtained by isomerizing a 1-olefin obtained by dehydrating a 1-alcohol. When an internal olefin is sulfonated, β-sultone is quantitatively produced, and a part of the β-sultone is converted to γ-sultone and olefin sulfonic acid, which are further converted to hydroxyalkanesulfonate and olefin sulfonate in the neutralization and hydrolysis process (for example, J. Am. Oil Chem. Soc. 69, 39(1992)). Here, the hydroxy group of the obtained hydroxyalkanesulfonate is inside the alkane chain, and the double bond of the olefin sulfonate is inside the olefin chain. The obtained product is mainly a mixture of these, and may contain a small amount of hydroxyalkanesulfonate having a hydroxy group at the end of the carbon chain or α-olefinsulfonate having a double bond at the end of the carbon chain. In this specification, these products and their mixtures are collectively called internal olefinsulfonate. Hydroxyalkanesulfonate is also called hydroxy form of internal olefinsulfonate (hereinafter, also called HAS), and olefinsulfonate is also called olefin form of internal olefinsulfonate (hereinafter, also called IOS).

[0014] The number of carbon atoms in the internal olefin sulfonate is 10 or more, preferably 14 or more and 18 or less. From the viewpoints of antibacterial properties, cleaning properties and foaming properties, an internal olefin sulfonate having a carbon number of 16 is preferred. The liquid detergent composition for textile products of the present invention may contain an internal olefin sulfonate having a carbon number of 16 as component (a1). The carbon number of the internal olefin sulfonate does not include the number of carbon atoms in the salt portion. That is, the carbon number of the olefin portion is the carbon number of the internal olefin sulfonate. In other words, the carbon number of the internal olefin sulfonate represents the carbon number of the internal olefin to which the sulfonate is covalently bonded.

[0015] Examples of the salt of the internal olefin sulfonate include an alkali metal salt, an alkaline earth metal (1 / 2 atom) salt, an ammonium salt, and an organic ammonium salt. Examples of the alkali metal salt include a sodium salt and a potassium salt. Examples of the organic ammonium salt include an alkanol ammonium salt having 1 to 6 carbon atoms.

[0016] The internal olefin sulfonate also includes those containing a trace amount of so-called alpha olefin sulfonate (hereinafter also referred to as α-olefin sulfonate), in which the sulfonate is located at position 1 of the carbon chain. From the viewpoints of antibacterial properties, cleaning properties and foaming properties, the content of α-olefin sulfonate in the internal olefin sulfonate is preferably 10% by mass or less, more preferably 7% by mass or less, even more preferably 5% by mass or less, still more preferably 3% by mass or less, and preferably 0.01% by mass or more.

[0017] Internal olefin sulfonates can be obtained by sulfonating an olefin having 10 to 18 carbon atoms and having a double bond at the second or higher position as the main component. When the internal olefin is sulfonated, β-sultone is quantitatively produced, and a part of the β-sultone is converted to γ-sultone and olefin sulfonic acid, which are further converted to hydroxyalkanesulfonate and olefin sulfonate in the neutralization and hydrolysis process (for example, J. Am.Oil Chem. Soc. 69, 39(1992)). Here, the hydroxy group of the obtained hydroxyalkanesulfonate is located inside the alkane chain, and the double bond of the olefin sulfonate is located inside the olefin chain. The obtained product is mainly a mixture of these, and some of them may contain a trace amount of hydroxyalkanesulfonate having a hydroxy group at the end of the carbon chain or olefin sulfonate having a double bond at the end of the carbon chain.

[0018] In this specification, these products and mixtures thereof are collectively referred to as internal olefin sulfonates. As described above, hydroxyalkanesulfonates are referred to as hydroxy forms of internal olefin sulfonates (HAS), and olefin sulfonates are referred to as olefin forms of internal olefin sulfonates (IOS). The mass ratio of the compounds in the internal olefin sulfonate can be measured by HPLC-MS. Specifically, for example, the mass ratio can be determined from the HPLC-MS peak area of ​​the internal olefin sulfonate by the method described in the Examples below.

[0019] The internal olefin sulfonate may contain a hydroxyl group and an olefin group. The mass ratio of the content of the olefin group in the internal olefin sulfonate to the content of the hydroxyl group in the internal olefin sulfonate (olefin group / hydroxyl group) may be 0 / 100 or more, further 5 / 95 or more, and 50 / 50 or less, further 40 / 60 or less, further 30 / 70 or less, further 25 / 75 or less.

[0020] In the sulfate salt having an alkyl or alkenyl group having 10 to 24 carbon atoms, the number of carbon atoms in the alkyl or alkenyl group is preferably 12 or more and preferably 20 or less, more preferably 18 or less, from the viewpoints of antibacterial properties, cleaning properties and foaming properties. The sulfate salt preferably has an alkyl group.

[0021] In the polyoxyalkylene alkyl or alkenyl ether sulfate salt having an alkyl or alkenyl group with 10 to 24 carbon atoms, the number of carbon atoms in the alkyl or alkenyl group is preferably 12 or more, and preferably 18 or less, more preferably 16 or less, from the viewpoints of antibacterial properties, cleaning properties, and foaming properties. The ether sulfate salt preferably has an alkyl group. Examples of the oxyalkylene group in the ether sulfate salt include one or more groups selected from an oxyethylene group and an oxypropylene group. The oxyalkylene group is preferably an oxyalkylene group containing an oxypropylene group. More preferably, it is an oxypropylene group. The ether sulfate salt preferably has an average addition mole number of oxyalkylene groups of 1 to 5.

[0022] Examples of sulfonates having an alkyl or alkenyl group having 10 to 24 carbon atoms (excluding internal olefin sulfonates having 10 to 18 carbon atoms) include one or more anionic surfactants selected from alkylbenzenesulfonates having an alkyl group having 10 to 24 carbon atoms, alkenylbenzenesulfonates having an alkenyl group having 10 to 24 carbon atoms, alkanesulfonates in which the alkyl group has 10 to 24 carbon atoms, α-olefinsulfonates in which the α-olefin moiety has 10 to 24 carbon atoms, α-sulfofatty acid salts in which the fatty acid moiety has 10 to 24 carbon atoms, and α-sulfofatty acid lower alkyl ester salts in which the fatty acid moiety has 10 to 24 carbon atoms and the ester moiety has 1 to 5 carbon atoms.

[0023] Examples of salts of component (a1) include alkali metal salts, alkaline earth metal (1 / 2 atom) salts, ammonium salts, and organic ammonium salts. Examples of alkali metal salts include sodium salts and potassium salts. Examples of organic ammonium salts include alkanol ammonium salts having 1 to 6 carbon atoms. From the viewpoint of availability, the salts of component (a1) are preferably alkali metal salts and alkanol ammonium salts having 1 to 6 carbon atoms.

[0024] From the viewpoints of antibacterial properties, cleaning properties and foaming properties, the liquid detergent composition for textile products of the present invention preferably contains, as component (a), an internal olefin sulfonate having from 10 to 18 carbon atoms as component (a1).

[0025] Examples of the (a2) component include alcohol alkoxylates, ester alkoxylates, polyhydric alcohol fatty acid esters which may contain an alkyleneoxy group, alkyl glycosides, polyoxyethylene glycols, polyoxyethyleneoxypropylene glycols, polyoxypropyleneoxyethyleneoxypropylene glycols, etc. Examples of the alcohol alkoxylates include polyoxyalkylene alkyl ethers, polyoxyalkylene alkenyl ethers, etc. Examples of the polyhydric alcohol fatty acid esters which may contain an alkyleneoxy group include glycerin fatty acid esters, polyglycerin fatty acid esters, propylene glycol fatty acid esters, polyethylene glycol fatty acid esters, sorbitan fatty acid esters, sucrose fatty acid esters, polyoxyethylene sorbitan fatty acid esters, etc.

[0026] Among these, from the viewpoints of antibacterial properties, cleaning properties, and foaming properties, the component (a2) is preferably a nonionic surfactant selected from alcohol alkoxylates and ester alkoxylates. Examples of the alcohol alkoxylates and ester alkoxylates include nonionic surfactants represented by the following general formula (1). R 1 (CO) m O-(AO) n -R 2 (1) [In the formula, R 1 is an aliphatic hydrocarbon group having 9 to 18 carbon atoms, R 2is a hydrogen atom or a methyl group, CO is a carbonyl group, m is a number of 0 or 1, AO is one or more alkyleneoxy groups selected from an alkyleneoxy group having 2 carbon atoms and an alkyleneoxy group having 3 carbon atoms, and AO contains an alkyleneoxy group having at least 2 carbon atoms. When AO contains an alkyleneoxy group having 2 carbon atoms and an alkyleneoxy group having 3 carbon atoms, the alkyleneoxy group having 2 carbon atoms and the alkyleneoxy group having 3 carbon atoms may be a block bond or a random bond. n is the average number of moles added and is a number of 1 to 50.

[0027] In formula (1), R 1 From the viewpoints of antibacterial properties, cleaning properties and foaming properties, the number of carbon atoms is preferably 12 or more and preferably 18 or less. In formula (1), R 1 Examples of the aliphatic hydrocarbon group include an alkyl group and an alkenyl group. In the formula (1), m is preferably 0 from the viewpoints of antibacterial properties, cleaning properties and foaming properties. In formula (1), AO is one or more alkyleneoxy groups selected from alkyleneoxy groups having 2 carbon atoms and alkyleneoxy groups having 3 carbon atoms, and AO contains an alkyleneoxy group having at least 2 carbon atoms. From the viewpoints of antibacterial properties, cleaning properties and foaming properties, the proportion of alkyleneoxy groups having 2 carbon atoms, i.e., ethyleneoxy groups, in AO is preferably 50 mol% or more, more preferably 60 mol% or more, even more preferably 70 mol% or more, and is 100 mol% or less, and may be 100 mol%. In formula (1), n ​​is preferably 4 or more, more preferably 6 or more, and is preferably 40 or less, more preferably 30 or less, from the viewpoints of antibacterial properties, cleaning properties and foaming properties.

[0028] The liquid detergent composition for textile products of the present invention preferably contains, as component (a), a nonionic surfactant represented by the above general formula (1) as component (a2).

[0029] From the viewpoints of antibacterial properties, cleaning properties and foaming properties, the liquid detergent composition for textile products of the present invention preferably contains, as component (a), a surfactant represented by the following general formula (2) as component (a2). R 11 -O-(EO) n1 -(AO) n2 -(EO) n3 -H (2) [In the formula, R 11 represents an alkyl or alkenyl group having 10 to 18 carbon atoms, EO represents an ethyleneoxy group, AO represents an alkyleneoxy group having 3 or 4 carbon atoms, n1, n2, and n3 represent the average number of moles added of EO and AO, n1 is 0 to 20, n2 is 1 to 10, and n3 is 1 to 20.

[0030] In formula (2), R 11 From the viewpoints of antibacterial properties, cleaning properties and foaming properties, the number of carbon atoms is preferably 10 or more and preferably 15 or less. n1, n2, and n3 are the average number of moles added of EO and AO, and from the viewpoints of antibacterial activity, detergency, and foaming property, n1 is preferably 1 or more, more preferably 2 or more, even more preferably 3 or more, and preferably 15 or less, more preferably 12 or less, and even more preferably 10 or less. n2 is preferably 1.5 or more, more preferably 2 or more, and preferably 10 or less, and more preferably 8 or less. n3 is preferably 2 or more, more preferably 3 or more, and preferably 17 or less, more preferably 15 or less, even more preferably 12 or less, and even more preferably 10 or less.

[0031] From the viewpoints of antibacterial properties, cleaning properties and foaming properties, the liquid detergent composition for textile products of the present invention preferably contains, as component (a), an anionic surfactant (a1) and a nonionic surfactant (a2). In this case, the mass ratio of the content of component (a1) to the total content of components (a1) and (a2), i.e., (a1) / [(a1)+(a2)], is preferably 0.05 or more, more preferably 0.2 or more, even more preferably 0.3 or more, still more preferably 0.4 or more, from the viewpoints of antibacterial properties and foaming properties, and is preferably 0.95 or less, more preferably 0.8 or less, even more preferably 0.6 or less, from the viewpoints of cleaning properties and foaming properties.

[0032] From the viewpoints of antibacterial properties, cleaning properties and foaming properties, the liquid detergent composition for textile products of the present invention contains component (a) in an amount of preferably 20% by mass or more, more preferably 30% by mass or more, and preferably 70% by mass or less, more preferably 60% by mass or less. From the viewpoints of antibacterial properties, cleaning properties and foaming properties, the liquid detergent composition for textile products of the present invention contains component (a1) in an amount of preferably 5 mass % or more, more preferably 10 mass % or more, even more preferably 13 mass % or more, and preferably 40 mass % or less, more preferably 30 mass % or less, even more preferably 27 mass % or less. From the viewpoints of antibacterial properties, cleaning properties and foaming properties, the liquid detergent composition for textile products of the present invention contains component (a2) in an amount of preferably 5 mass % or more, more preferably 10 mass % or more, even more preferably 15 mass % or more, and preferably 60 mass % or less, more preferably 55 mass % or less, even more preferably 50 mass % or less.

[0033] The liquid detergent composition for fabric products of the present invention contains an alcohol having 10 to 16 carbon atoms as component (b). From the viewpoints of antibacterial properties, cleaning properties and foaming properties, the component (b) is preferably a primary alcohol. From the viewpoints of antibacterial properties, cleaning properties and foaming properties, the component (b) is preferably an aliphatic alcohol. From the viewpoints of antibacterial properties, cleaning properties and foaming properties, the component (b) is preferably a straight-chain alcohol. From the viewpoints of antibacterial properties, cleaning properties and foaming properties, the component (b) is preferably a monohydric alcohol. From the viewpoints of antibacterial properties, cleaning properties and foaming properties, component (b) is preferably a saturated alcohol. The number of carbon atoms in component (b) is preferably 12 or more and 14 or less from the viewpoints of antibacterial properties, cleaning properties and foaming properties.

[0034] Examples of the component (b) include decanol, dodecanol, tetradecanol, hexadecanol, etc. From the viewpoints of antibacterial properties and foaming properties, the component (b) is preferably an alcohol selected from 1-decanol, 1-dodecanol, 1-tetradecanol, and 1-hexadecanol, more preferably an alcohol selected from 1-dodecanol and 1-tetradecanol, and even more preferably 1-dodecanol.

[0035] From the viewpoints of antibacterial properties, cleaning properties and foaming properties, the liquid detergent composition for textile products of the present invention contains component (b) in an amount of preferably 0.1 mass % or more, more preferably 0.5 mass % or more, and preferably 8 mass % or less, more preferably 6 mass % or less, even more preferably 4 mass % or less, and even more preferably 2 mass % or less.

[0036] In the liquid detergent composition for textile products of the present invention, the mass ratio of the content of component (a) to the content of component (b), (b) / (a), is preferably 0.010 or more, more preferably 0.020 or more, from the viewpoints of antibacterial property and foaming property, and is preferably 0.1 or less, more preferably 0.075 or less, even more preferably 0.06 or less, and still more preferably 0.05 or less, from the viewpoints of cleaning property and foaming property.

[0037] The liquid detergent composition for fabric products of the present invention contains component (c), an antibacterial compound having an aromatic ring (excluding quaternary ammonium salts). Component (c) may be, for example, a nonionic antibacterial compound having an aromatic ring.

[0038] Regarding component (c), an antibacterial compound is one which shows a zone of inhibition when an antibacterial test is carried out according to JIS L 1902 "Antibacterial test method for textile products" using a cotton cloth with 1% by weight of the compound evenly applied thereto.

[0039] Examples of the (c) component include antibacterial compounds having a diphenyl ether skeleton, antibacterial compounds selected from phenol derivatives, and antibacterial compounds selected from benzoic acid derivatives. From the viewpoint of antibacterial properties and ease of fixation to textile products after washing (antibacterial maintenance), antibacterial compounds having a diphenyl ether skeleton, for example, antibacterial compounds containing halogen atoms and having a diphenyl ether skeleton, are preferred. Specific compounds include diclosan, triclosan, benzoic acid, paraben, etc., and from the viewpoint of antibacterial properties and ease of fixation to textile products after washing, diclosan and triclosan are preferred, and further from the viewpoint of ease of product design of liquid detergents for textile products, diclosan is more preferred.

[0040] From the standpoints of antibacterial properties and economy, the liquid detergent composition for textile products of the present invention contains component (c) in an amount of preferably 0.01 mass % or more, more preferably 0.02 mass % or more, and preferably 0.1 mass % or less, more preferably 0.07 mass % or less.

[0041] In the liquid detergent composition for textile products of the present invention, from the viewpoints of antibacterial properties, cleaning properties, foaming properties, and deodorizing effect for textile products, the mass ratio of the content of component (b) to the content of component (c), (b) / (c), is preferably 5 or more, more preferably 15 or more, even more preferably 20 or more, and preferably 100 or less, more preferably 50 or less, even more preferably 30 or less.

[0042] The liquid detergent composition for textile products of the present invention may contain, as components other than components (a), (b), and (c), alkaline agents, chelating agents, anti-redeposition agents, dispersants, bleaching agents, softeners, enzymes, fluorescent dyes, antioxidants, colorants, antibacterial preservatives, antifoaming agents, and the like, within the range that does not impair the effects of the present invention.

[0043] The liquid detergent composition for textile products of the present invention preferably contains water. The water is used in an amount such that the composition is 100% by mass. The detergent composition of the present invention can contain water, for example, 20% by mass or more, further 30% by mass or more, and 99% by mass or less, further 98% by mass or less, further 90% by mass or less, and further 80% by mass or less.

[0044] From the viewpoints of antibacterial activity, cleaning ability and foaming ability, the liquid detergent composition for fabric products of the present invention has a pH at 25° C. of preferably 3 or more, more preferably 4 or more, and preferably 10 or less, more preferably 9 or less. The pH of the composition can be measured by the measurement method described in the Examples below.

[0045] From the viewpoints of antibacterial activity, cleaning ability and foaming ability, the liquid detergent composition for textile products of the present invention has a viscosity at 20° C. of preferably 10 mPa·s or more, more preferably 50 mPa·s or more, and preferably 250 mPa·s or less, more preferably 200 mPa·s or less. The viscosity of the liquid detergent composition for textile products of the present invention can be measured, for example, by using a known rotational viscometer such as a single cylinder viscometer after bringing a sample to 20° C.

[0046] The fibers constituting the textile products to be washed with the textile product liquid detergent composition of the present invention may be either hydrophobic or hydrophilic. Examples of hydrophobic fibers include protein fibers (milk protein casein fibers, promix, etc.), polyamide fibers (nylon, etc.), polyester fibers (polyester, etc.), polyacrylonitrile fibers (acrylic, etc.), polyvinyl alcohol fibers (vinylon, etc.), polyvinyl chloride fibers (polyvinyl chloride, etc.), polyvinylidene chloride fibers (vinylidene, etc.), polyolefin fibers (polyethylene, polypropylene, etc.), polyurethane fibers (polyurethane, etc.), polyvinyl chloride / polyvinyl alcohol copolymer fibers (polycral, etc.), etc. Examples of hydrophilic fibers include seed hair fibers (cotton, cotton, kapok, etc.), bast fibers (hemp, flax, ramie, hemp, jute, etc.), leaf vein fibers (Manila hemp, sisal, etc.), palm fibers, rush, straw, animal hair fibers (wool, mohair, cashmere, camel hair, alpaca, vicuna, angora, etc.), silk fibers (domestic silk, wild silk), feathers, and cellulosic fibers (rayon, polynosic, cupra, acetate, etc.).

[0047] Examples of textile products include fabrics such as woven fabrics, knitted fabrics, and nonwoven fabrics using the hydrophobic or hydrophilic fibers, and products obtained using the same, such as undershirts, T-shirts, dress shirts, blouses, slacks, hats, handkerchiefs, towels, knitwear, socks, underwear, and tights.

[0048] Although the mechanism of the effect of the present invention has not been fully elucidated, it is believed to be as follows. Although the component (c) of the present invention has antibacterial properties, its antibacterial properties against bacteria are improved by using it in combination with the component (b). This is believed to be because, when the components (c) and (b) are absorbed into the bacterial body, the effect on one of the metabolic systems of the bacteria becomes greater than when only the component (c) is absorbed, causing the growth of the bacterial body to be inhibited. On the other hand, in the washing of textile products, the component (a), which contributes to the washing properties of textile products, is thought to be adsorbed to the surface of the textile products after washing, but the component (c), which has a low molecular weight and high solubility in water, is difficult to adsorb to the surface of the textile products. In the liquid detergent composition for textile products of the present invention, the component (b) is used in combination to change the molecular aggregation state of the surfactant component (a) in the aqueous solution, thereby exhibiting good washing properties and foaming properties. Furthermore, it is considered that the relatively highly hydrophobic (b) component is easily adsorbed to the surface of a textile product, but the adsorption state of the (a) and (b) components on the surface of the textile after washing is such that gaps are formed at the adsorption sites of the (a) component, and the (c) component of the present invention is adsorbed thereto, promoting the adsorption of the (c) component near the (b) component. It is considered that the relationship between these adsorbed molecules is further improved when the (a1) component and the (a2) component are used in combination. When the bacterial cells adhere to the surface of a textile product after washing with the composition of the present invention, it is considered that they easily take up the (b) and (c) components located in the vicinity, improving the antibacterial properties. It should be noted that the present invention is not particularly limited to the above-mentioned mechanism of action.

[0049] [How to wash textile products] The cleaning method of the present invention is a method for cleaning textile products, which comprises washing textile products with a cleaning liquid obtained by mixing the liquid detergent composition for textile products of the present invention with water, and then rinsing the textile products with water. That is, the cleaning method of the present invention is a method for cleaning a textile product, which comprises washing the textile product with a cleaning liquid obtained by mixing component (a), component (b), component (c), and water, and then rinsing the textile product with water.

[0050] The water to be mixed with the liquid detergent composition for textile products of the present invention and the water to be used for rinsing can each be selected from the following ranges on the German hardness scale: 1°dH or more, further 2°dH or more, further 3°dH or more, and 30°dH or less, further 25°dH or less, further 20°dH or less, further 18°dH or less, and further 15°dH or less. Here, German hardness (°dH) in this specification 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 for the German hardness scale are determined by chelate titration using disodium salt of ethylenediaminetetraacetic acid. A specific method for measuring the German hardness of water in this specification is shown below.

[0051] <Method of measuring water hardness in Germany> 〔reagent〕 0.01 mol / l EDTA·2Na solution: 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 Laboratories Co., Ltd.) Ammonia buffer solution for hardness measurement (67.5 g of ammonium chloride dissolved in 570 ml of 28 w / v% ammonia water, and made up to 1000 ml with deionized water) [Measurement of hardness] (1) Using a volumetric pipette, place 20 ml of sample water into a conical beaker. (2) Add 2 ml of ammonia buffer solution for hardness measurement. (3) Add 0.5 ml of Universal BT indicator and confirm that the solution is reddish purple after addition. (4) While shaking the conical beaker well, add 0.01 mol / l EDTA·2Na solution from the burette, and the end point of the titration is when the sample water 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 sample water) F: Factor of 0.01mol / l EDTA·2Na solution

[0052] The matters described for the liquid detergent composition for textile products of the present invention can be appropriately applied to the cleaning method of the present invention.

[0053] From the viewpoints of antibacterial activity, cleaning ability, and foaming ability, the content of the component (a) in the cleaning solution is preferably 50 ppm by mass or more, more preferably 100 ppm by mass or more, even more preferably 125 ppm by mass or more, and preferably 5,000 ppm by mass or less, more preferably 300 ppm by mass or less, even more preferably 270 ppm by mass or less, and still more preferably 250 ppm by mass or less. From the viewpoints of antibacterial properties, cleaning properties and foaming properties, the content of the (a1) component in the cleaning solution is preferably 10 ppm by mass or more, more preferably 20 ppm by mass or more, and preferably 2000 ppm by mass or less, more preferably 500 ppm by mass or less. From the viewpoints of antibacterial properties, cleaning properties and foaming properties, the content of the (a2) component in the cleaning solution is preferably 10 ppm by mass or more, more preferably 20 ppm by mass or more, and preferably 3000 ppm by mass or less, more preferably 1000 ppm by mass or less.

[0054] The cleaning solution has a mass ratio (a1) / [(a1)+(a2)] of the content of the component (a1) to the sum of the content of the component (a1) and the content of the component (a2), which is preferably 0.05 or more, more preferably 0.2 or more, and even more preferably 0.4 or more, from the viewpoints of antibacterial property and foaming property, and is preferably 0.95 or less, more preferably 0.8 or less, and even more preferably 0.6 or less, from the viewpoints of cleaning property and foaming property.

[0055] From the viewpoints of cleaning properties and foaming properties, the content of the component (b) in the cleaning solution is preferably 1 ppm by mass or more, more preferably 1.5 ppm by mass or more, even more preferably 2 ppm by mass or more, and preferably 12 ppm by mass or less, more preferably 10 ppm by mass or less, even more preferably 8 ppm by mass or less.

[0056] The cleaning solution has a mass ratio (b) / (a) of the content of the component (a) to the content of the component (b) of preferably 0.010 or more, more preferably 0.020 or more, from the viewpoints of antibacterial property and foaming property, and preferably 0.100 or less, more preferably 0.075 or less, even more preferably 0.06 or less, and still more preferably 0.05 or less, from the viewpoints of cleaning property and foaming property.

[0057] From the viewpoints of antibacterial properties and economic efficiency, the content of component (c) in the cleaning solution is preferably 0.03 ppm by mass or more, more preferably 0.05 ppm by mass or more, even more preferably 0.1 ppm by mass or more, and preferably 1.5 ppm by mass or less, more preferably 1.3 ppm by mass or less, and even more preferably 1.0 ppm by mass or less.

[0058] From the viewpoints of antibacterial properties, cleaning properties, foaming properties and workability, the temperature of the cleaning solution is preferably 0°C or higher, more preferably 3°C or higher, even more preferably 5°C or higher, and preferably 70°C or lower, more preferably 60°C or lower.

[0059] From the viewpoints of antibacterial activity, cleaning properties and foaming properties, the pH of the cleaning solution at 20° C. is preferably 3 or more, more preferably 4 or more, and preferably 10 or less, more preferably 9 or less. The pH of the cleaning solution can be measured by the measurement method described in the Examples below.

[0060] In recent years, washing machines have become larger, and the value of the liquor ratio, which is the ratio of the mass of clothes (kg) to the amount of water in the washing solution (liters), i.e., the amount of water in the washing solution (liters) / mass of clothes (kg) (hereinafter, this ratio may be referred to as the liquor ratio), tends to decrease. In the washing method of the present invention, from the viewpoints of antibacterial properties, cleaning properties, and foaming properties, the liquor ratio is preferably 2 or more, more preferably 3 or more, even more preferably 4 or more, still more preferably 5 or more, and preferably 45 or less, more preferably 40 or less, even more preferably 30 or less, and still more preferably 20 or less.

[0061] In the cleaning method of the present invention, from the viewpoints of workability, antibacterial properties, cleaning properties and foaming properties, the cleaning time is preferably 1 minute or more, more preferably 2 minutes or more, even more preferably 3 minutes or more, and preferably 90 minutes or less, more preferably 60 minutes or less, even more preferably 30 minutes or less, and still more preferably 15 minutes or less.

[0062] The fiber washing method of the present invention is suitable for a method of immersing the fiber in a liquid used for scouring while feeding the fiber with a roller or the like, and a rotary washing method. The rotary washing method means a washing method in which the fiber not fixed to a rotating device rotates around a rotating shaft together with the washing liquid. The rotary washing method can be carried out by a rotary washing machine. In the present invention, for example, it is preferable to wash the fiber using a rotary washing machine. Specific examples of the rotary washing machine include a drum washing machine, a pulsator washing machine, and an agitator washing machine. Each of these rotary washing machines can be commercially available.

[0063] In the cleaning method of the present invention, the textile product is washed with a predetermined cleaning solution, and then the textile product is rinsed with water. Rinsing may be performed using water in accordance with a known method such as washing clothes.

[0064] In addition to the above-described embodiment, the present invention discloses the following aspects. <1> A liquid detergent composition for textile products, comprising: (a) a surfactant (hereinafter referred to as component (a)); (b) an alcohol having from 10 to 16 carbon atoms (hereinafter referred to as component (b)); and (c) an antibacterial compound having an aromatic ring (excluding quaternary ammonium salts) (hereinafter referred to as component (c)).

[0065] <2> The component (a) is one or more surfactants selected from (a1) anionic surfactants and (a2) nonionic surfactants. <1> The liquid detergent composition for textile products according to claim 1.

[0066] <3> The composition contains, as the component (a), an anionic surfactant (a1) (hereinafter referred to as the component (a1)) and a nonionic surfactant (a2) (hereinafter referred to as the component (a2)), <1> or <2> The liquid detergent composition for textile products according to claim 1.

[0067] <4> the mass ratio of the content of the (a1) component to the sum of the content of the (a1) component and the content of the (a2) component, (a1) / [(a1)+(a2)], is preferably 0.05 or more, more preferably 0.2 or more, even more preferably 0.3 or more, still more preferably 0.4 or more, and is preferably 0.95 or less, more preferably 0.8 or less, even more preferably 0.6 or less; <3> The liquid detergent composition for textile products according to claim 1.

[0068] <5> The component (a2) is a nonionic surfactant selected from alcohol alkoxylates and ester alkoxylates. <2> ~ <4> 10. The liquid detergent composition for textile products according to claim 9,

[0069] <6> the mass ratio of the content of the (a) component to the content of the (b) component, (b) / (a), is preferably 0.010 or more, more preferably 0.020 or more, and preferably 0.1 or less, more preferably 0.075 or less, even more preferably 0.06 or less, and still more preferably 0.05 or less; <1> ~ <5> 10. The liquid detergent composition for textile products according to claim 9,

[0070] <7> (a) contains an internal olefin sulfonate having 10 to 18 carbon atoms as a component, <1> ~ <6> 10. The liquid detergent composition for textile products according to claim 9,

[0071] <8> Contains a nonionic surfactant represented by the following general formula (1) as component (a), <1> ~ <7> 10. The liquid detergent composition for textile products according to claim 9, R 1 (CO) m O-(AO) n -R 2 (1) [In the formula, R 1 is an aliphatic hydrocarbon group having 9 to 18 carbon atoms, R 2 is a hydrogen atom or a methyl group, CO is a carbonyl group, m is a number of 0 or 1, AO is one or more alkyleneoxy groups selected from an alkyleneoxy group having 2 carbon atoms and an alkyleneoxy group having 3 carbon atoms, and AO contains an alkyleneoxy group having at least 2 carbon atoms. When AO contains an ethyleneoxy group and a propyleneoxy group, the ethyleneoxy group and the propyleneoxy group may be bonded in a block type or random type. n is the average number of moles added, and is a number of 1 to 50.

[0072] <9> Contains a surfactant represented by the following general formula (2) as component (a), <1> ~ <8> 10. The liquid detergent composition for textile products according to claim 9, R 11 -O-(EO) n1 -(AO) n2 -(EO) n3 -H (2) [In the formula, R 11 represents an alkyl or alkenyl group having 10 to 18 carbon atoms, EO represents an ethyleneoxy group, AO represents an alkyleneoxy group having 3 or 4 carbon atoms, n1, n2, and n3 represent the average number of moles added of EO and AO, n1 is 1 to 15, n2 is 1 to 10, and n3 is 1 to 15.

[0073] <10> The component (b) is an alcohol selected from decanol, dodecanol, tetradecanol and hexadecanol, preferably 1-decanol, 1-dodecanol, 1-tetradecanol and 1-hexadecanol, more preferably 1-dodecanol and 1-tetradecanol, and even more preferably 1-dodecanol; <1> ~ <9> 10. The liquid detergent composition for textile products according to claim 9,

[0074] <11> (c) The component is a nonionic antibacterial compound having an aromatic ring; <1> ~ <10> 10. The liquid detergent composition for textile products according to claim 9,

[0075] <12> (c) The component is an antibacterial compound having a diphenyl ether skeleton. <1> ~ <11> 10. The liquid detergent composition for textile products according to claim 9,

[0076] <13> (c) component is preferably contained in an amount of 0.01 mass% or more, more preferably 0.02 mass% or more, and preferably 0.1 mass% or less, more preferably 0.07 mass% or less. <1> ~ <12> 10. The liquid detergent composition for textile products according to claim 9,

[0077] <14> <1> ~ <13> 2. A method for cleaning textile products, comprising washing textile products with a cleaning liquid obtained by mixing the liquid detergent composition for textile products according to any one of 1 to 11 and water, and then rinsing the textile products with water.

[0078] <15> The water to be mixed with the liquid detergent composition for textile products and the water to be used for rinsing each have a hardness selected from the following on the German hardness scale: 1° dH or more, further 2° dH or more, further 3° dH or more, and 30° dH or less, further 25° dH or less, further 20° dH or less, further 18° dH or less, and further 15° dH or less. <14> The method for cleaning a textile product according to claim 1.

[0079] <16> The German hardness is a hardness measured by the following method: <15> The method for cleaning a textile product according to claim 1. <Method of measuring water hardness in Germany> 〔reagent〕 0.01 mol / l EDTA·2Na solution: 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 Laboratories Co., Ltd.) Ammonia buffer solution for hardness measurement (67.5 g of ammonium chloride dissolved in 570 ml of 28 w / v% ammonia water, and made up to 1000 ml with deionized water) [Measurement of hardness] (1) Using a volumetric pipette, place 20 ml of sample water into a conical beaker. (2) Add 2 ml of ammonia buffer solution for hardness measurement. (3) Add 0.5 ml of Universal BT indicator and confirm that the solution is reddish purple after addition. (4) While shaking the conical beaker well, add 0.01 mol / l EDTA·2Na solution from the burette, and the end point of the titration is when the sample water 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 sample water) F: Factor of 0.01mol / l EDTA·2Na solution

[0080] <17> The content of the component (a) in the cleaning solution is preferably 50 ppm by mass or more, more preferably 100 ppm by mass or more, even more preferably 125 ppm by mass or more, and preferably 5000 ppm by mass or less, more preferably 300 ppm by mass or less, even more preferably 270 ppm by mass or less, and still more preferably 250 ppm by mass or less. <14> ~ <16> 13. The method for cleaning a textile product according to any one of the above items.

[0081] <18> The content of the (a1) component in the cleaning solution is preferably 10 ppm by mass or more, more preferably 20 ppm by mass or more, and preferably 2000 ppm by mass or less, more preferably 500 ppm by mass or less. <14> ~ <17> 13. The method for cleaning a textile product according to any one of the above items.

[0082] <19> The content of the component (a2) in the cleaning solution is preferably 10 ppm by mass or more, more preferably 20 ppm by mass or more, and preferably 3000 ppm by mass or less, more preferably 1000 ppm by mass or less. <14> ~ <18> 13. The method for cleaning a textile product according to any one of the above items.

[0083] <20> The content of the component (b) in the cleaning solution is preferably 1 ppm by mass or more, more preferably 1.5 ppm by mass or more, even more preferably 2 ppm by mass or more, and preferably 12 ppm by mass or less, more preferably 10 ppm by mass or less, even more preferably 8 ppm by mass or less. <14> ~ <19> 13. The method for cleaning a textile product according to any one of the above items.

[0084] <21> The content of the component (c) in the cleaning solution is preferably 0.03 ppm by mass or more, more preferably 0.05 ppm by mass or more, even more preferably 0.1 ppm by mass or more, and preferably 1.5 ppm by mass or less, more preferably 1.3 ppm by mass or less, even more preferably 1.0 ppm by mass or less. <14> ~ <20> 13. The method for cleaning a textile product according to any one of the above items. EXAMPLES

[0085] The components used in the examples and comparative examples are as follows. <Composition ingredients> (a) Ingredients Component (a1) (a1-1): Potassium salt of internal olefin sulfonate having 16 carbon atoms (a1-1) was obtained by using an internal olefin having a carbon number of 16, with reference to the method described in the manufacturing example of JP 2014-76988 A. The mass ratio of the olefin body (potassium olefin sulfonate) / hydroxy body (potassium hydroxyalkanesulfonate) in the obtained internal olefin sulfonate potassium salt of (a1-1) was 17 / 83. The mass ratio of the position distribution of the sulfonic acid group of the hydroxy body in (a1-1) was 1st position / 2nd position / 3rd position / 4th position / 5th position / 6th to 9th position=2.3% / 23.6% / 18.9% / 17.5% / 13.7% / 11.2% / 6.4% / 6.4% / 0% (total 100% by mass).

[0086] The mass ratio of the position distribution of sulfonic acid groups in the internal olefin sulfonate salt was measured by high performance liquid chromatography / mass spectrometry (HPLC-MS). Specifically, hydroxy bodies to which sulfonic acid groups are bonded were separated by high performance liquid chromatography (HPLC) and each was identified by subjecting each to a mass spectrometer (MS). As a result, each ratio was calculated from the HPLC-MS peak area. In this specification, each ratio calculated from the peak area was calculated as a mass ratio. The apparatus and conditions used for the measurement were as follows: HPLC apparatus "LC-20ASXR" (Shimadzu Corporation), column "ODS Hypersil (registered trademark)" (4.6 x 250 mm, particle size: 3 μm, Thermo Fisher Scientific), sample preparation (1000-fold dilution with methanol), eluent A (water with 10 mM ammonium acetate added), eluent B (water with 10 mM ammonium acetate added), Methacrylonitrile / water = 95 / 5 (v / v) solution), gradient (0 min (A / B = 60 / 40) → 15.1-20 min (30 / 70) → 20.1-30 min (60 / 40), MS device "LCMS-2020" (Shimadzu Corporation), ESI detection (anion detection m / z: 321.10 (component (a) with carbon number 16), column temperature (40 °C), flow rate (0.5 mL / min), injection volume (5 μL)

[0087] The mass ratio of the hydroxyl / olefin of the internal olefin sulfonate was measured by HPLC-MS. Specifically, the hydroxyl and olefin were separated by HPLC and each was identified by MS. As a result, the ratio of each was calculated from the HPLC-MS peak area. The apparatus and conditions used for the measurement were as follows: HPLC apparatus (trade name: Agilent Technology 1100, manufactured by Agilent Technologies), column (trade name: L-column ODS 4.6 x 150 mm, manufactured by Chemicals Evaluation and Research Institute, Japan), sample preparation (1000-fold dilution with methanol), eluent A (water with 10 mM ammonium acetate added), eluent B (methanol with 10 mM ammonium acetate added), gradient (0 min (A / B = 30 / 70%) → 10 min (30 / 70%) → 55 min (0 / 100%) → 65 min (0 / 100%) → 66 min (30 / 70%) → 75 min (30 / 70%)), MS apparatus (trade name: Agilent Technology 1100MS SL (G1946D)), MS detection (anion detection m / z 60-1600, UV 240 nm).

[0088] In addition, a specified amount of α-olefin sulfonate having an aliphatic hydrocarbon group with 16 carbon atoms was added to component (a1-1) as an external standard, and the peak area of ​​the α-olefin sulfonate was compared with the peak area of ​​component (a1-1) to calculate the mass of component (a1-1). The number of moles of component (a1-1) was calculated from the molecular weight of component (a1-1). The molecular weight of component (a1-1) was calculated in acid form. The molecular weight of the olefin form of the internal olefin sulfonate is 304.5, and the molecular weight of the HAS form is 322.6.

[0089] (a1-2): Laurylbenzenesulfonic acid

[0090] (a2) Component (a2-1): Polyoxyethylene lauryl ether (average number of moles of oxyethylene groups added: 10 moles) (a2-2): Polyoxyethylene, polyoxypropylene, polyoxyethylene lauryl ether (the average number of moles of oxyethylene groups added is 9 moles and 9 moles, and the average number of moles of oxypropylene groups added is 2 moles)

[0091] (b) Component: 1-dodecanol (Kao Corporation, Kalcol 2098)

[0092] (c) Ingredient: Dichrosan

[0093] (1) pH measurement method A composite electrode for pH measurement (glass-ground sleeve type, manufactured by HORIBA) is connected to a pH meter (pH / ion meter F-23, manufactured by HORIBA) and the power is turned on. A saturated potassium chloride aqueous solution (3.33 mol / L) is used as the internal solution of the pH electrode. Next, a 100 mL beaker is filled with a pH 4.01 standard solution (phthalate standard solution), a pH 6.86 standard solution (neutral phosphate standard solution), and a pH 9.18 standard solution (borate standard solution), and the beaker is immersed in a thermostatic bath at 25°C for 30 minutes. The pH measurement electrode is immersed in the thermostatically adjusted standard solution for 3 minutes, and a calibration operation is performed in the order of pH 6.86 → pH 9.18 → pH 4.01. The sample to be measured (liquid detergent composition for textile products) is adjusted to 25°C, the electrode of the pH meter is immersed in the sample, and the pH is measured after 1 minute.

[0094] (2) Preparation of liquid detergent composition for textile products The liquid detergent compositions for textile products shown in Tables 1 and 2 were prepared as follows. A 5 cm long Teflon (registered trademark) stirrer piece was placed in a 200 mL glass beaker, and the mass was measured. Next, 20 g of ion-exchanged water, component (a1), component (a2), component (b), and component (c) were placed in the beaker, and while stirring at 100 r / min, monoethanolamine or hydrochloric acid was added so that the pH of the composition became 8, and ion-exchanged water was added to the beaker until the total amount became 100 g. After stirring at 100 r / min for 15 minutes, a liquid detergent composition for textile products was obtained.

[0095] (3) Preparation of textile products for cleaning rate evaluation (3-1) Preparation of textile products for evaluating dichlosan adsorption rate 1.7 kg of cotton cloth (Cotton 2003 (Tanigashou Shoten)) was washed twice in a fully automatic washing machine (National NA-F702P) on the standard cycle (4.7 g of Emulgen 108 (Kao Corporation) during washing, 47 L of water, 9 minutes of washing, 2 rinses, 3 minutes of spinning), then washed three times in water only (47 L of water, 9 minutes of washing, 2 rinses, 3 minutes of spinning), and dried for 24 hours in an environment of 23°C and 45% RH. It was then cut into pieces measuring 6 cm x 6 cm.

[0096] (3-2) Preparation of textile products for cleaning rate evaluation Preparation of model cloth artificially contaminated with sebum A model artificial sebum-contaminated cloth was prepared by applying a model artificial sebum-contaminated liquid having the following composition to a cloth (Cotton 2003 (manufactured by Tanigashira Shoten)). The model artificial sebum-contaminated liquid was applied to the cloth by printing the artificial contaminated liquid on 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. After that, it was cut into a size of 6 cm x 6 cm. *Composition of model artificial sebum contamination liquid: 0.4% by mass of lauric acid, 3.1% by mass of myristic acid, 2.3% by mass of pentadecanoic acid, 6.2% by mass of palmitic acid, 0.4% by mass of heptadecanoic acid, 1.6% by mass of stearic acid, 7.8% by mass of oleic acid, 13.0% by mass of triolein, 2.2% by mass of n-hexadecyl palmitate, 6.5% by mass of squalene, 1.9% by mass of egg white lecithin liquid crystal, 8.1% by mass of Kanuma red soil, 0.01% by mass of carbon black, remaining water (total 100% by mass)

[0097] (4) Cleaning test (4-1) Cleaning test 1 The washing operation was carried out using a Tergotometer (manufactured by Ueshima Seisakusho). The water used for washing was prepared by adding calcium chloride and magnesium chloride in a mass ratio of 8:2 to ion-exchanged water and adjusting the hardness to 4° dH. The total amount of the (a1) component and the (a2) component in the liquid detergent composition for textile products shown in Tables 1 and 2 was mixed with the washing water so that the concentration in the washing liquid was 150 mg / kg, to obtain a washing liquid. 0.6 L of the washing liquid and four pieces of the above-mentioned textile products for the adsorption rate evaluation of diclosan were added to a 1-liter stainless steel beaker for washing tests. The bath ratio was adjusted to 20 with the above-mentioned textile products for the adsorption rate evaluation. The temperature of the washing liquid was 20°C. The evaluation fibers were washed for 10 minutes at 85 rpm in a Tergotometer. After washing, the fibers were dehydrated, and all the dehydrated fibers were added to 0.6 L of washing water and rinsed for 3 minutes at 85 rpm in a Tergotometer. After rinsing, the fabric was dehydrated again and then dried for 24 hours in an environment of 23°C and 45% RH.

[0098] (4-2) Cleaning test 2 The washing operation was carried out using a Tergotometer (Ueshima Seisakusho). The water used for washing was prepared by adding calcium chloride and magnesium chloride in a mass ratio of 8:2 to ion-exchanged water to adjust the hardness to 4° dH. The total amount of the components (a1) and (a2) in the liquid detergent composition for textile products shown in Tables 1 and 2 was mixed with the washing water so that the concentration in the washing liquid was 150 mg / kg, to obtain a washing liquid. 0.6 L of the washing liquid and five pieces of the above-mentioned textile products for the evaluation of the washing rate were added to a 1-liter stainless steel beaker for the washing test. The bath ratio was adjusted to 20 with the textile products for the evaluation of the adsorption rate of diclosan. The temperature of the washing liquid was 20°C. The evaluation textile was washed in a Tergotometer at 85 rpm for 10 minutes. After washing, the textile was dehydrated and dried with an iron press.

[0099] (5) Quantification of the amount of diclosan adsorbed onto textile products (evaluation of antibacterial properties) The amount of antibacterial agent adsorbed to the textile product was used as an index of antibacterial activity. The greater the amount of antibacterial agent adsorbed, the higher the antibacterial activity and the better the antibacterial activity of the textile product is maintained after washing.

[0100] After the above-mentioned washing test 1, two pieces of the textile product for evaluating the diclosan adsorption rate were taken out and the mass of the fabric was measured while sealing it in a No. 7 screw tube. 20 mL of methanol was added thereto, and ultrasonic treatment was performed in an ultrasonic cleaner at 25°C for 30 minutes to obtain a measurement solution. Next, component (c) (diclosan) was diluted with methanol to prepare calibration curve solutions of 0.01 μg / mL, 0.05 μg / mL, 0.1 μg / mL, 0.5 μg / mL, and 1.0 μg / mL. The amount of diclosan in the measurement solution was quantified using a liquid chromatography mass spectrometer (hereinafter abbreviated as LCMS device), and the amount of diclosan adsorbed to the textile product from the calibration curve solution was obtained. LCMS equipment: Shimadzu Corporation LCMS2020 Eluent A: 10mmol / L ammonium acetate in distilled water Eluent B: 10mmol / L ammonium acetate in methanol Gradient conditions: Eluent A / B = 1:1 (0 min) → Eluent B (2-5 min) → Eluent A / Eluent B = 1 / 1 (5.1 min-8 min), flow rate: 0.6 mL / min, sample injection volume 5 μl, column temperature 40°C The adsorption rate of diclosan onto textile products was calculated using the following formula. The results are shown in Tables 1 and 2. Dichlosan adsorption rate = 100 x {(total mass of dichlosan adsorbed to the two textile products used to measure the adsorption amount) x (total mass of the textile products used in cleaning test 1) / (mass of the two textile products used to measure the adsorption amount)} / (total mass of dichlosan used to prepare the cleaning solution)

[0101] (6) Method for evaluating cleaning rate The cleaning rates of the evaluated textile products obtained in the above cleaning test 2 were measured by the following method, and the average value of five pieces was calculated. The results are shown in Tables 1 and 2. The reflectance at 550 nm of the original fabric before contamination 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 values ​​in Tables 1 and 2 are the average values ​​of the cleaning rates of five sheets. Cleaning rate (%) = 100 x [(reflectance after cleaning - reflectance before cleaning) / (reflectance of original fabric - reflectance before cleaning)]

[0102] (7) Foaming test The water used in the foaming test was prepared by adding calcium chloride and magnesium chloride to ion-exchanged water in a mass ratio of 8:2 and adjusting the hardness to 4° dH. The total amount of the (a1) component and the (a2) component in the liquid detergent composition for textile products shown in Tables 1 and 2 was mixed with the water for the foaming test so that the concentration in the cleaning liquid was 600 mg / kg, to obtain a foaming test liquid. 50 g of the foaming test liquid was placed in a screw tube No. 8. The screw tube containing the foaming test liquid was subjected to a vertical reciprocating shaking treatment at 300 rpm for 5 minutes using a shaker (Yamato Scientific Co., Ltd., model number: SA300). After the treatment, the screw tube was removed from the shaker, and the height from the water surface to the foam surface of the foaming test liquid after leaving it for 30 minutes was measured and used as the foam height. A foam height of 3.5 cm or more was evaluated as ◯, and a foam height of less than 3.5 cm was evaluated as ×.

[0103] [Table 1]

[0104] [Table 2]

Claims

1. A liquid detergent composition for textile products, comprising: (a) a surfactant (hereinafter referred to as component (a)); (b) 1-dodecanol (hereinafter referred to as component (b)) in an amount of 0.1% by mass or more and 6% by mass or less; and (c) diclosan (hereinafter referred to as component (c)); The component (a) contains an anionic surfactant (a1) (hereinafter referred to as the component (a1)) and a nonionic surfactant (a2) (hereinafter referred to as the component (a2)), Contains component (a1) from 5% by mass to 40% by mass, component (a2) from 5% by mass to 50% by mass, the component (a1) is one or more anionic surfactants selected from internal olefin sulfonates having from 10 to 18 carbon atoms, sulfates having an alkyl or alkenyl group having from 10 to 24 carbon atoms, polyoxyalkylene alkyl or alkenyl ether sulfates having an alkyl or alkenyl group having from 10 to 24 carbon atoms, and sulfonates having an alkyl or alkenyl group having from 10 to 24 carbon atoms (excluding internal olefin sulfonates having from 10 to 18 carbon atoms); The component (a2) is a nonionic surfactant represented by the following general formula (1): R 1 (CO) m O-(AO) n -R 2 (1) [In the formula, R 1 is an aliphatic hydrocarbon group having 9 to 18 carbon atoms, R 2 is a hydrogen atom or a methyl group, CO is a carbonyl group, m is a number of 0 or 1, AO is one or more alkyleneoxy groups selected from an alkyleneoxy group having 2 carbon atoms and an alkyleneoxy group having 3 carbon atoms, and AO contains an alkyleneoxy group having at least 2 carbon atoms. When AO contains an ethyleneoxy group and a propyleneoxy group, the ethyleneoxy group and the propyleneoxy group may be bonded in a block type or random type. n is the average number of moles added and is a number of 1 to 50.] the mass ratio (a1) / [(a1)+(a2)] of the content of the component (a1) to the sum of the content of the component (a1) and the content of the component (a2) is 0.05 or more and 0.95 or less, the mass ratio (b) / (a) of the content of the component (a) to the content of the component (b) is 0.010 or more and 0.1 or less; A liquid detergent composition for textile products, in which the mass ratio (b) / (c) of the content of the component (b) to the content of the component (c) is 5 or more and 100 or less.

2. A liquid cleaning composition for textile products as described in claim 1, wherein the mass ratio of the content of the (a1) component to the sum of the content of the (a1) component and the content of the (a2) component, (a1) / [(a1)+(a2)], is 0.4 or more and 0.95 or less.

3. A liquid cleaning composition for textile products as described in claim 1 or 2, wherein the mass ratio (b) / (a) of the content of the component (a) to the content of the component (b) is 0.020 or more and 0.075 or less.

4. The liquid detergent composition for textile products according to any one of claims 1 to 3, comprising, as component (a), an internal olefin sulfonate having from 10 to 18 carbon atoms.

5. A method for cleaning textile products, comprising washing the textile products with a cleaning liquid obtained by mixing the liquid detergent composition for textile products according to any one of claims 1 to 4 and water, and then rinsing the textile products with water.

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