Adsorption inhibition methods

Abstract

To provide a method for suppressing adsorption of an aqueous composition containing (a) a cationic surfactant and (c) a nonionic surfactant to a nonwoven fabric when the aqueous composition comes into contact with the nonwoven fabric.SOLUTION: An inorganic salt (b) comprising cations and anions, the cations being derived from Group 1 or 2 elements in the periodic table and at least one of the cations and anions being a divalent ion, is added to an aqueous composition so that the molar ratio of the content of divalent ions based on component (b) to the content of component (a) (content of divalent ions) / (content of component (a)) is 0.4 or more and 40 or less.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a method for suppressing adsorption of cationic surfactants and nonionic surfactants to nonwoven fabrics. [Background technology]

[0002] In sheet-type cleaning materials such as cleaning sheets and disinfecting sheets, aqueous compositions containing cationic surfactants are used to impart bactericidal effects. In such aqueous compositions, nonionic surfactants may also be used in combination to enhance the detergency and effect of the cationic surfactant.

[0003] Patent Document 1 discloses a cleaning sheet in which an aqueous disinfectant is impregnated into a base sheet capable of retaining liquid, wherein the aqueous disinfectant contains a quaternary ammonium salt surfactant as component (A), potassium hydroxide as component (B), an aminocarboxylic acid chelating agent as component (C), and water as component (D), the pH of the aqueous disinfectant impregnated into the base sheet is 10.5 or more and 13.5 or less, and the base sheet contains at least one fiber selected from recycled fibers, synthetic fibers, and natural fibers.

[0004] Patent Document 2 also describes a paper containing 80% by mass or more of cellulose-based fibers and having a basis weight of 20 to 120 g / m 2 The document discloses a disinfectant cleaning article comprising a substrate sheet impregnated with a liquid detergent composition, the liquid detergent composition containing 0.01 to 0.50 mass% of an organic acid (a), 0.1 to 1.0 mass% of a surfactant (b), and 0.5 to 5.0 mass% of a divalent or higher metal ion compound (c).

[0005] Patent Document 3 also discloses a cleaning sheet in which an aqueous disinfectant is impregnated into a base sheet capable of retaining liquid, wherein the aqueous disinfectant contains a quaternary ammonium salt surfactant as component (A), at least one selected from inorganic electrolytes, organic acids, and organic acid salts as component (B), an aminocarboxylic acid chelating agent as component (C), and water as component (D), the aqueous disinfectant impregnated into the base sheet has a pH of 4.8 or more and 8.0 or less, and the base sheet contains at least one selected from recycled fibers, synthetic fibers, and natural fibers. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 2019-112342 [Patent Document 2] Japanese Patent Application Publication No. 2017-110323 [Patent Document 3] Japanese Patent Application Publication No. 2018-90564 Summary of the Invention [Problem to be solved by the invention]

[0007] In this type of cleaning material, the contained cationic surfactant is expected to be applied to the target object and provide a bactericidal effect. However, even if a predetermined amount of cationic surfactant is blended into the chemical solution, the amount of cationic surfactant applied to the target object tends to decrease. This is because the adsorption of the cationic surfactant to the nonwoven fabric progresses over time, over several days from immediately after the nonwoven fabric is impregnated with the chemical solution. Furthermore, even in chemical solutions blended with a nonionic surfactant, which is expected to improve cleaning and antibacterial properties when used in combination with a cationic surfactant, the adsorption of the nonionic surfactant progresses in conjunction with the cationic surfactant, which is a problem.

[0008] The present invention can provide a wiping material in which the effects of the cationic surfactant and the nonionic surfactant are fully exerted on the object being wiped. [Means for solving the problem]

[0009] The present invention relates to a wiping material comprising a nonwoven fabric and an aqueous composition carried on the nonwoven fabric, wherein the aqueous composition contains (a) a cationic surfactant (hereinafter referred to as component (a)), (b) an inorganic salt composed of a cation and an anion, wherein the cation is a cation of an element of Group 1 or Group 2 of the periodic table, and at least one of the cation and the anion is a divalent ion (hereinafter referred to as component (b)), (c) a nonionic surfactant (hereinafter referred to as component (c)), and water, wherein the molar ratio of the content of component (a) in the aqueous composition to the content of divalent ions based on component (b) (divalent ion content) / (content of component (a)) is 0.4 or more and 40 or less.

[0010] The present invention also relates to a wiping method for wiping an object with the wiping material of the present invention.

[0011] The present invention also relates to an adsorption suppression method for suppressing adsorption of component (a) and component (c) to a nonwoven fabric when an aqueous composition containing component (a) (hereinafter referred to as component (a)) and component (c) (hereinafter referred to as component (c)) comes into contact with the nonwoven fabric, the method further comprising adding to the aqueous composition (b) an inorganic salt composed of a cation and an anion, wherein the cation is a cation of an element of Group 1 or Group 2 of the periodic table, and at least one of the cation and the anion is a divalent ion [hereinafter referred to as component (b)], in such a manner that the molar ratio of the content of component (a) to the content of divalent ions based on component (b), (divalent ion content) / (content of component (a)), is 0.4 or more and 40 or less. [Effects of the Invention]

[0012] According to the present invention, there is provided a wiping material in which the effects of the cationic surfactant and the nonionic surfactant are fully exerted on the object to be wiped. DETAILED DESCRIPTION OF THE INVENTION

[0013] The present inventors investigated the reason why the expected bactericidal effect could not be obtained even when an aqueous composition containing a cationic surfactant and a nonionic surfactant was applied to a nonwoven fabric, and found that this was because the cationic surfactant and nonionic surfactant adsorbed to the nonwoven fabric, reducing their concentrations in contact with the target object. They then discovered that the adsorption of the cationic surfactant and nonionic surfactant to the nonwoven fabric could be suppressed by using an inorganic salt containing a specific ion (component (b)) in the cationic surfactant and nonionic surfactant under specific conditions.

[0014] [Cleaning materials] The wiping material of the present invention comprises a nonwoven fabric and an aqueous composition carried on the nonwoven fabric (hereinafter also referred to as the aqueous composition of the present invention), and the aqueous composition contains component (a), component (b), component (c), and water, and the molar ratio of the content of component (a) to the content of divalent ions based on component (b) (divalent ion content) / (content of component (a)) is 0.4 or more and 40 or less.

[0015] <Aqueous composition> The aqueous composition of the present invention contains component (a), component (b), component (c), and water.

[0016] Examples of the cationic surfactant of component (a) include N-alkylpyridinium salt surfactants and quaternary ammonium salt surfactants. In the present invention, component (a) is preferably a quaternary ammonium salt surfactant, more preferably a compound represented by the following general formula (a1), and even more preferably a compound represented by the following general formula (a1-1):

[0017] [ka]

[0018] [In the formula, R 1 ~R 4 each independently represents an alkyl group having 1 to 20 carbon atoms. 1 ~R 4 The number of carbon atoms in any one of X is 8 to 20. -represents a counter ion.

[0019] In general formula (a1), R 1 ~R 4 At least two of these may be bonded to each other to form a ring. These alkyl groups may be substituted with a hydroxy group, an alkoxy group, an acyloxy group, an acylamino group, or an aryl group.

[0020] R 1 ~R 4 The alkyl group in the formula (I) is a straight-chain or branched alkyl group, and examples thereof include methyl, ethyl, propyl, isopropyl, butyl, t-butyl, pentyl, hexyl, octyl, 2-ethylhexyl, decyl, dodecyl, pentadecyl, hexadecyl, and octadecyl.

[0021] The alkoxy group that may substitute for the alkyl group preferably has 2 to 18 carbon atoms and may be a polyalkyleneoxy group. Examples of the alkoxy group include methoxy, ethoxy, propoxy, 2-ethylhexyloxy, decyloxy, octadecyloxy, hexadecyloxy, methoxypolyethyleneoxy, 2-ethylhexyloxypolyethyleneoxy, and dodecyloxypolypropyleneoxy.

[0022] The number of carbon atoms in the acyloxy group which may substitute for the alkyl group is preferably 2 or more, more preferably 8 or more, and 18 or less, more preferably 16 or less. Examples of the acyloxy group include acetyloxy, propionyloxy, valeryloxy, pivaloyloxy, octanoyloxy, lauroyloxy, myristoyloxy, palmitoyloxy, and stearoyloxy.

[0023] The number of carbon atoms in the acylamino group which may be substituted on the alkyl group is preferably 2 or more, more preferably 8 or more, and 18 or less, more preferably 16 or less. Examples of the acylamino group include acetylamino, propionylamino, valerylamino, pivaloylamino, octanoylamino, lauroylamino, myristoylamino, palmitoylamino, and stearoylamino.

[0024] The aryl group that may substitute on the alkyl group is preferably an aryl group having 6 to 20 carbon atoms, such as a phenyl group or a naphthyl group, with a phenyl group being particularly preferred.

[0025] R 1 ~R 4 The alkyl group in the formula (I) is preferably a linear alkyl group, and when it has the above-mentioned substituent, the alkyl group itself preferably has 1 or more and 4 or less carbon atoms, more preferably 1 or 2 carbon atoms.

[0026] R 1 ~R 4 Among these, the ring formed by bonding at least two of them is preferably a 5- or 6-membered ring, and examples thereof include pyrrolidine, piperidine, piperazine, morpholine, thiomorpholine, quinuclidine, 1,4-diazabicyclo[2,2,2]octane, and imidazole.

[0027] The compound represented by general formula (a1) is R 1 is an alkyl group having 8 to 20 carbon atoms, R 2 and R 4 is an alkyl group having 1 to 3 carbon atoms, R 3 is an alkyl group having 1 to 10 carbon atoms.

[0028] X - Examples of the cation include inorganic or organic carboxylate ions, sulfonate ions, and halogen ions, with halogen ions being preferred, chloride ions and bromide ions being more preferred, and chloride ions being more preferred.

[0029] [ka]

[0030] [In the formula, R 11 represents an alkyl group having 8 to 20 carbon atoms, and R 12 and R 13Each of X independently represents an alkyl group having 1 to 3 carbon atoms. L represents an alkylene group having 1 to 4 carbon atoms, and Ar represents an aryl group. - represents a counter ion.

[0031] R 11 represents R in general formula (a1). 1 The same meaning and preferred range are also the same. 12 and R 13 are the same as R in general formula (a1) except that they have different numbers of carbon atoms. 2 The alkylene group having 1 to 4 carbon atoms in L includes, for example, methylene, ethylene, propylene, and butylene, with methylene and ethylene being preferred, and methylene being more preferred.

[0032] The number of carbon atoms in the aryl group in Ar is preferably 6 or more, and preferably 10 or less, more preferably 8 or less, and even more preferably 6. Examples of the aryl group include phenyl and naphthyl. The aryl group may have a substituent, and examples of the substituent include an alkyl group, an alkoxy group, an alkylthio group, a hydroxy group, and a halogen atom.

[0033] X - represents X in general formula (a1). - The same definition and preferred range are also the same.

[0034] The compound represented by general formula (a1-1) is R 11 is an unsubstituted alkyl group having 8 to 20 carbon atoms, R 12 and R 13 A compound in which is an unsubstituted alkyl group having 1 to 3 carbon atoms, L is a methylene group, and Ar is a phenyl group which may have a substituent is preferred.

[0035] The quaternary ammonium salt surfactant may be a mixture of compounds in which some of the alkyl groups have different numbers of carbon atoms.

[0036] Examples of the cationic surfactant of component (a) include lauryltrimethylammonium chloride, cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, distearyldimethylammonium chloride, hexadecyltrimethylammonium chloride, hexadecyltrimethylammonium bromide, myristyltrimethylammonium bromide, alkylbenzyldimethylammonium chloride having from 8 to 18 carbon atoms, stearylphenylethyldimethylammonium chloride, lauryltrihydroxymethylammonium chloride, N-dodecylpyridinium chloride, and dioctyldimethylammonium chloride, with alkylbenzyldimethylammonium chloride having from 8 to 18 carbon atoms being preferred.

[0037] The aqueous composition of the present invention contains component (a) in an amount of preferably 0.05% by mass or more, more preferably 0.1% by mass or more, even more preferably 0.2% by mass or more, and preferably 5% by mass or less, more preferably 2% by mass or less, even more preferably 0.5% by mass or less. The mass % of component (a) is calculated based on the amount of the counter anion of component (a) being chloride ion (Cl). - ) in other words, based on the chloride-equivalent content. The same applies to mass ratios hereinafter.

[0038] In the present invention, by using component (b) in combination with components (a) and (c), it is possible to suppress the adsorption of components (a) and (c) to the nonwoven fabric, and therefore the amounts of components (a) and (c) blended can be significantly reduced compared to when component (b) is not used in combination.

[0039] Component (b) is an inorganic salt composed of a cation and an anion, the cation being a cation of an element of Group 1 or 2 of the periodic table, and at least one of the cation and anion being a divalent ion. Component (b) may be a hydrate.

[0040] Component (b) is preferably an inorganic salt selected from inorganic salts composed of monovalent ions and divalent ions and inorganic salts composed of divalent ions, and more preferably inorganic salts composed of monovalent ions and divalent ions. That is, component (b) may be an inorganic salt selected from inorganic salts whose cations are monovalent ions and anions are divalent ions, inorganic salts whose cations are divalent ions and anions are monovalent ions, and inorganic salts whose cations and anions are both divalent ions. In the present invention, for inorganic salts whose cations and anions are both divalent ions, the content of divalent ions based on component (b) is defined as the sum of the molar amount of divalent cations and the molar amount of divalent anions.

[0041] Examples of elements in Group 1 of the periodic table include lithium, sodium, potassium, rubidium, cesium, and francium. Of the elements in Group 1 of the periodic table, lithium, sodium, and potassium are preferred.

[0042] Examples of elements in Group 2 of the periodic table include beryllium, magnesium, calcium, strontium, barium, and radium. Of the elements in Group 2 of the periodic table, magnesium and calcium are preferred.

[0043] At least one of the cations and anions of component (b) is a divalent ion. Although both the cations and anions of component (b) may be divalent ions, inorganic salts containing these ions are preferably highly water-soluble.

[0044] Among the divalent ions, examples of divalent anions include sulfide ions, carbonate ions, sulfate ions, sulfite ions, selenate ions, selenite ions, and thiosulfate ions.

[0045] Component (b) is preferably an inorganic salt containing, as a divalent ion, one or more ions selected from calcium ions, magnesium ions, sulfate ions, and sulfite ions.

[0046] Component (b) can be selected from inorganic compounds such as halides, sulfates, nitrates, and carbonates, preferably inorganic compounds such as chlorides, bromides, and sulfates.

[0047] Specific examples of component (b) include calcium chloride, magnesium chloride, calcium nitrate, magnesium nitrate, lithium sulfate, sodium sulfate, potassium sulfate, magnesium sulfate, sodium sulfite, and magnesium sulfite.

[0048] In the present invention, the component (b) is preferably a compound having a solubility in water at 20°C of preferably 0.1 g / 100 mL or more, more preferably 1 g / 100 mL or more, even more preferably 10 g / 100 mL or more, and still more preferably 20 g / 100 mL or more.

[0049] The aqueous composition of the present invention contains component (b) in an amount of preferably 0.1% by mass or more, more preferably 0.2% by mass or more, even more preferably 0.4% by mass or more, and preferably 10% by mass or less, more preferably 5% by mass or less, and even more preferably 2% by mass or less. The content of divalent ions based on component (b) in the aqueous composition can be measured by ion chromatography. It can also be calculated from the amount of component (b) blended when preparing the aqueous composition.

[0050] In the aqueous composition of the present invention, from the viewpoint of preventing the adsorption of components (a) and (c) to nonwoven fabrics and of bactericidal properties, the molar ratio of the content of component (a) to the content of divalent ions based on component (b) (divalent ion content) / (content of component (a)) is 0.4 or more, preferably 0.5 or more, more preferably 0.9 or more, even more preferably 2.0 or more, and still more preferably 4.0 or more, and is 40 or less, preferably 20 or less. This molar ratio can also be calculated from the amounts of components (a) and (b) blended when preparing the aqueous composition of the present invention.

[0051] In the present invention, the proportion of divalent ions derived from component (b) among the divalent ions in the aqueous composition of the present invention is preferably 50% by mass or more, more preferably 60% by mass or more, even more preferably 70% by mass or more, even more preferably 80% by mass or more, even more preferably 90% by mass or more, and preferably 100% by mass or less, and may be 100% by mass.

[0052] The aqueous composition of the present invention contains a nonionic surfactant as component (c), which is preferred from the viewpoints of preventing the component (a) from being adsorbed onto the nonwoven fabric and of its disinfecting properties.

[0053] The nonionic surfactant of component (c) is preferably a polyoxyalkylene nonionic surfactant, and more preferably a nonionic surfactant containing an ethyleneoxy group. The nonionic surfactant containing an ethyleneoxy group is preferably a nonionic surfactant represented by the following general formula (c1): R 1c (CO) m O-(AO) n -R 2c (c1) [In the formula, R 1c is an aliphatic hydrocarbon group having 9 to 18 carbon atoms, and R 2c is a hydrogen atom or a methyl group. CO is a carbonyl group, and m is the number 0 or 1. AO group is an alkyleneoxy group containing an ethyleneoxy group and having 2 to 4 carbon atoms. n is the average number of moles added, which is a number of 1 to 50.

[0054] In general formula (c1), R 1c is an aliphatic hydrocarbon group having 9 to 18 carbon atoms. 1c The number of carbon atoms in R is 9 or more, preferably 10 or more, more preferably 11 or more, and preferably 18 or less, more preferably 16 or less, even more preferably 15 or less, and even more preferably 14 or less. 1c is an aliphatic hydrocarbon group, preferably a group selected from alkyl groups and alkenyl groups.

[0055] In general formula (c1), the AO group is an alkyleneoxy group containing an ethyleneoxy group and having 2 to 4 carbon atoms, preferably an alkyleneoxy group containing an ethyleneoxy group and having 2 to 3 carbon atoms, and more preferably an ethyleneoxy group. The AO group may also be an alkyleneoxy group containing an ethyleneoxy group and another alkyleneoxy group, such as a propyleneoxy group. The other alkyleneoxy group is preferably a propyleneoxy group. When the AO group contains an ethyleneoxy group and a propyleneoxy group, the ethyleneoxy group and the propyleneoxy group may be bonded in a block or random manner.

[0056] In general formula (c1), n ​​is the number-average number of moles of AO groups added, and is a number of 1 to 50. n is 1 or more, preferably 2 or more, more preferably 3 or more, and 50 or less, preferably 40 or less, more preferably 30 or less, even more preferably 20 or less, still more preferably 10 or less, still more preferably 8 or less, still more preferably 7 or less, and still more preferably 6 or less.

[0057] Specific examples of nonionic surfactants having no polyoxyethylene group include one or more selected from sucrose fatty acid esters, glycerin fatty acid esters, sorbitan fatty acid esters, alkyl glycosides, and glyceryl monoethers.

[0058] From the viewpoints of bactericidal properties and wettability to target surfaces when coexisting with component (a), component (c) is preferably a nonionic surfactant with an HLB of less than 12.5. That is, the aqueous composition of the present invention preferably contains, as component (c), a nonionic surfactant with an HLB of less than 12.5. Here, in the case of a nonionic surfactant having a polyoxyethylene group, the HLB of component (c) is determined by the Griffin method represented by the following general formula (I): HLB value = [(molecular weight of polyoxyethylene group portion of component (c)) / (molecular weight of component (c))] × 20 (I) The molecular weight of the polyoxyethylene group portion of component (c) is calculated using the average number of moles of polyoxyethylene groups added.

[0059] As described above, nonionic surfactants with a low HLB, for example, nonionic surfactants with an HLB of less than 12.5, are preferred components from the viewpoints of bactericidal activity and wettability to target surfaces when coexisting with component (a), but they tend to be easily adsorbed to nonwoven fabrics when used together with cationic surfactants. In the present invention, the adsorption of such nonionic surfactants to nonwoven fabrics can be suppressed, and the expected effects of using a low HLB nonionic surfactant can be fully exerted on the target object.

[0060] The nonionic surfactant with an HLB of less than 12.5 is preferably 8 or more and less than 12.5, preferably 12 or less, more preferably 11 or less, and even more preferably 10 or less, from the viewpoints of bactericidal activity when coexisting with component (a) and wettability to the target surface.

[0061] The nonionic surfactant having an HLB of less than 12.5 is preferably a nonionic surfactant represented by the general formula (c1), and more preferably a nonionic surfactant having an HLB of less than 12.5. 1c If the other chemical structures are the same, R 1c The larger the number of carbon atoms in the formula (c1), the lower the HLB value. Furthermore, in the general formula (c1), the AO group is an alkyleneoxy group containing an ethyleneoxy group and having 2 to 4 carbon atoms, and the ethyleneoxy group increases the HLB value compared to the propyleneoxy group. Furthermore, in the general formula (c1), if the chemical structure other than n is the same, the larger the number of n, the higher the HLB value, and the smaller the number of n, the lower the HLB value.

[0062] The aqueous composition of the present invention contains component (c) in an amount of preferably 0.1% by mass or more, more preferably 0.2% by mass or more, even more preferably 0.3% by mass or more, and preferably 5% by mass or less, more preferably 2% by mass or less, even more preferably 1% by mass or less.

[0063] In the aqueous composition of the present invention, from the viewpoints of preventing the adsorption of components (a) and (c) to nonwoven fabrics and of bactericidal properties, the molar ratio of the content of component (c) to the content of divalent ions based on component (b) (divalent ion content) / (component (c) content) is preferably 0.4 or more, more preferably 0.5 or more, even more preferably 0.9 or more, still more preferably 2.0 or more, still more preferably 4.0 or more, and preferably 40 or less, more preferably 20 or less. This molar ratio can also be calculated from the amounts of components (b) and (c) added when preparing the aqueous composition of the present invention.

[0064] In the present invention, a surfactant other than components (a) and (c) [hereinafter referred to as component (c')] can be added, but caution is required in that this may impair the effect of component (a) and / or the feel after wiping. Examples of component (c') include anionic surfactants such as alkylbenzene sulfonates, alkyl sulfates, and polyoxyethylene alkyl sulfates, and amphoteric surfactants such as carbobetaine and sulfobetaine. When component (c') is used, its content in the aqueous composition of the present invention is 0.5% by mass or less, preferably 0.1% by mass or less, and more preferably 0.05% by mass or less.

[0065] The aqueous composition of the present invention may contain an organic solvent as component (d). Component (d) is preferably an organic solvent having a hydroxyl group and a ClogP of -2.0 or more and less than 1.0. In the present invention, the ClogP is a calculated value calculated using ChemProperty in ChemBioDraw Ultra ver. 14.0 from Perkin Elmer. A larger ClogP value indicates higher hydrophobicity.

[0066] The ClogP of component (d) is preferably −1.6 or more, more preferably −1.3 or more, and preferably 0.8 or less, more preferably 0.5 or less.

[0067] The component (d) is preferably one or more organic solvents having a hydroxyl group selected from the following components (d1) to (d3). Component (d1): a monohydric alcohol having 2 to 6 carbon atoms, and an organic solvent having a hydroxyl group and a ClogP of -2.0 or more and less than 1.0 Component (d2): an organic solvent having a hydroxyl group, which is an alcohol having 2 to 12 carbon atoms and a hydroxyl group of from 2 to 12, and has a ClogP of from -2.0 to less than 1.0 Component (d3): An organic solvent having a hydrocarbon group with 1 to 8 carbon atoms, an ether group, and a hydroxyl group, and having a ClogP of -2.0 or more and less than 1.0 (however, the hydrocarbon group does not include aromatic groups). Specific examples of components (d1) to (d3) are shown below. The numbers in parentheses are the calculated values ​​(CLogP) of each component calculated using ChemProperty in Perkin Elmer's Chem BioDrawUltra ver. 14.0.

[0068] Examples of the (d1) component include ethanol (-0.24), 1-propanol (0.29), and 2-propanol (0.07).

[0069] Examples of component (d2) include ethylene glycol (-1.4), propylene glycol (-1.1), butylene glycol (-0.73), hexylene glycol (-0.02), diethylene glycol (-1.3), triethylene glycol (-1.5), tetraethylene glycol (-1.66), dipropylene glycol (-0.69), tripropylene glycol (-0.55), and glycerin (-1.5).

[0070] The (d3) component includes diethylene glycol monomethyl ether (-0.78), diethylene glycol dimethyl ether (-0.26), triethylene glycol monomethyl ether (-0.96), diethylene glycol monoethyl ether (-0.39), diethylene glycol diethyl ether (0.52), diethylene glycol monobutyl ether (0.67), dipropylene glycol monomethyl ether (-0.16), dipropylene glycol monoethyl ether (0.23), tripropylene glycol monomethyl ether (0.26), dipropylene glycol monoethyl ether (0.26 ...ethyl ether (0.26), tripropylene glycol monomethyl ether (0.26), dipropylene glycol monoethyl ether (0.26), tripropylene glycol monoethyl ether (0.26), tripropylene glycol monoethyl ether (0.26), tripropylene glycol monoethyl ether (0.26), tripropylene glycol monoethyl ether (0.26), tripropylene glycol monoethyl ether (0.26), tripropylene glycol monoethyl ether (0.26), tripropylene glycol monoethyl ether (0.26), tripropylene glycol monoethyl Glycerol monomethyl ether (-0.03), 1-methoxy-2-propanol (-0.30), 1-ethoxy-2-propanol (0.09), 1-methylglycerol ether (-1.43), 2-methylglycerol ether (-0.73), 1,3-dimethylglycerol ether (-0.67), 1-ethylglycerol ether (-1.04), 1,3-diethylglycerol ether (0.11), triethylglycerol ether (0.83), and 1-pentylglyceryl ether (0.54).

[0071] As the component (d1) used in the present invention, ethanol is preferred from the viewpoint of usability, and as the component (d2), one or more selected from ethylene glycol, propylene glycol, glycerin, diethylene glycol, and dipropylene glycol are preferred from the viewpoint of liquid stability.

[0072] The aqueous composition of the present invention may also contain, as component (d), an organic solvent having a hydroxyl group and a ClogP of 1.0 to 2.2. Examples include organic solvents having a hydrocarbon group, an ether group, and a hydroxyl group with 1 to 8 carbon atoms and a ClogP of 1.0 to 2.2. Specific examples include 2-pentyl glyceryl ether (1.25), 1-octyl glyceryl ether (2.1), 2-ethylhexyl glyceryl ether (2.0), 2-phenoxyethanol (1.2), diethylene glycol monophenyl ether (1.25), triethylene glycol monophenyl ether (1.08), 2-benzyloxyethanol (1.1), and diethylene glycol monobenzyl ether (1.0). The numbers in parentheses are the calculated values ​​(ClogP) of each component calculated using ChemProperty in PerkinElmer's ChemBioDraw Ultra ver. 14.0.

[0073] The aqueous composition of the present invention contains component (d) in an amount of preferably 0.1% by mass or more, more preferably 0.5% by mass or more, even more preferably 1% by mass or more, and preferably 30% by mass or less, more preferably 20% by mass or less, even more preferably 10% by mass or less.

[0074] The aqueous composition of the present invention may further contain the following components (e1) to (e3) as optional components. Component (e1): a hydroxylamine compound containing an amino group and a hydroxyl group and having 1 to 8 carbon atoms. (e2) Component: Compound containing silicon atom (e3) component: fragrance compound, antioxidant, preservative, colorant or pH adjuster (excluding the above-mentioned (a), (b), (c), and (d) components)

[0075] In the component (e1), the amino group is preferably one or more amino groups selected from primary amino groups and secondary amino groups. Specific examples of the component (e1) include one or more compounds selected from monoethanolamine, mono-lower alkyl (carbon number 1 to 3) aminomonoethanolamine, mono-lower alkyl (carbon number 1 to 3) aminodiethanolamine, di-lower alkyl (carbon number 1 to 3) aminomonoethanolamine, triethanolamine, and trishydroxymethylaminomethane. The component (e1) may be contained as an ammonium ion depending on the pH of the aqueous composition of the present invention. The aqueous composition of the present invention may contain the component (e1) in an amount of 0.1% by mass to 2% by mass.

[0076] Specific examples of component (e2) include one or more compounds selected from silicon dioxide and silicone compounds. Examples of silicone compounds include dimethylpolysiloxane, polyether-modified silicone compounds containing an oxyethylene group having from 2 to 3 carbon atoms, and silicone compounds having one or more amino groups selected from primary to tertiary amino groups. The aqueous composition of the present invention can contain component (e2) in an amount of from 0.01% by mass to 1% by mass.

[0077] The aqueous composition of the present invention contains water. The water may be ion-exchanged water, distilled water, sterilized purified water, tap water, or water containing 0.1 mg / kg or more and 5 mg / kg or less of hypochlorite such as sodium hypochlorite. The aqueous composition of the present invention contains water in an amount of preferably 70% by mass or more, more preferably 75% by mass or more, even more preferably 80% by mass or more, and preferably 99% by mass or less, more preferably 98% by mass or less, even more preferably 97% by mass or less.

[0078] In the aqueous composition of the present invention, the pH at 25°C is preferably 6 or more, more preferably 6.5 or more, even more preferably 7 or more, and preferably 10 or less, more preferably 9 or less, even more preferably 8 or less, from the viewpoint of preventing the adsorption of components (a) and (c) to the nonwoven fabric. The pH of the aqueous composition of the present invention can be measured using a glass electrode by the method described in the Examples.

[0079] The aqueous composition of the present invention may be an aqueous composition obtained by blending components (a), (b), (c), and water under predetermined conditions. Accordingly, the wiping material of the present invention may be a wiping material comprising a nonwoven fabric and an aqueous composition supported on the nonwoven fabric, wherein the aqueous composition is a blend of components (a), (b), (c), and water, and the molar ratio of the amount of component (a) to the amount of divalent ions based on component (b) (amount of divalent ions blended) / (amount of component (a) blended) is 0.4 or more and 40 or less.

[0080] <Nonwoven fabric> Nonwoven fabrics generally contain hydrophilic fibers and / or hydrophobic fibers, and are preferably used in the form of a sheet.

[0081] In the present invention, hydrophilic fibers refer to fibers whose moisture regain under standard conditions (20°C, 65% RH) exceeds 5%. The moisture regain under standard conditions is measured by the methods specified in JIS L1013 and JIS L1015. Hydrophobic fibers refer to fibers whose moisture regain under standard conditions (20°C, 65% RH) is 5% or less.

[0082] 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, cellulosic fibers (rayon, polynosic, cupra, acetate, etc.), and hydrophilized polyethylene terephthalate fibers (polyethylene terephthalate fibers that have been hydrophilized and have a moisture regain under standard conditions within the range of hydrophilic fibers), and these may be used alone or in combination. In the present invention, from the viewpoints of ease of wiping, liquid absorption and release, the hydrophilic fiber is preferably one or more types selected from seed hair fiber, cellulosic fiber and hydrophilized polyethylene terephthalate fiber, more preferably one or more types of fiber selected from cotton and rayon.

[0083] Examples of hydrophobic fibers include polyamide fibers (such as nylon), polyester fibers (such as polyester and polyethylene terephthalate), polyacrylonitrile fibers (such as acrylic), polyvinyl alcohol fibers (such as vinylon), polyvinyl chloride fibers (such as polyvinyl chloride), polyvinylidene chloride fibers (such as vinylidene), polyolefin fibers (such as polyethylene and polypropylene), polyurethane fibers (such as polyurethane), and polyvinyl chloride / polyvinyl alcohol copolymer fibers (such as polycrelal). These fibers may be used alone or in combination. In the present invention, from the viewpoints of the strength of the nonwoven fabric, particularly the wet strength and ease of wiping when the nonwoven fabric is impregnated with an aqueous composition, the hydrophobic fiber is preferably one or more fibers selected from polyester fibers and polyolefin fibers, and more preferably one or more fibers selected from polyester fibers, polyethylene fibers, and polypropylene fibers.

[0084] The nonwoven fabric used in the present invention includes a nonwoven fabric in which the proportion of hydrophilic fibers among the constituent fibers is 50% by mass or more. In this case, the remainder of the constituent fibers is hydrophobic fibers. More specifically, the nonwoven fabric includes a nonwoven fabric in which the constituent fibers are 50% by mass or more and 95% by mass or less of hydrophilic fibers and 5% by mass or more and 50% by mass or less of hydrophobic fibers. The nonwoven fabric used in the present invention preferably includes a hydrophilic fiber content of 50% by mass or more, more preferably 60% by mass or more, and even more preferably 70% by mass or more among the constituent fibers. The nonwoven fabric used in the present invention also includes a hydrophobic fiber content of 5% by mass or more, more preferably 10% by mass or more, and even more preferably 15% by mass or more among the constituent fibers. The total mass% of the hydrophilic fibers and the hydrophobic fibers is 100% by mass.

[0085] When the nonwoven fabric is a blended nonwoven fabric containing hydrophilic fibers such as rayon or cotton and hydrophobic fibers such as polyester, polypropylene, or polyethylene, the bending stiffness value (B value) of the nonwoven fabric can be increased, improving the ease of wiping with the wiping material. In the present invention, by using a predetermined inorganic salt as component (b) in combination, even in a blended nonwoven fabric containing hydrophilic fibers and hydrophobic fibers, the adsorption of the cationic surfactant as component (a) and the nonionic surfactant as component (c) can be suppressed, and the cationic surfactant and nonionic surfactant blended in the aqueous composition can be released as planned, thereby achieving the expected effects.

[0086] The basis weight of the nonwoven fabric used in the present invention is preferably 10 g / m 2 More preferably, 20 g / m 2 or more, and preferably 100 g / m 2 Less than 80 g / m 2 More preferably 60 g / m or less 2 The nonwoven fabric of the wiping material of the present invention preferably has this basis weight before carrying the aqueous composition.

[0087] The bending stiffness (B value) of the nonwoven fabric used in the present invention is preferably 0.050 gf cm 2 / cm or more, preferably 0.10 gf·cm 2 / cm or more, and more preferably 0.15gf·cm2 / cm or more, and even more preferably 0.20 gf cm 2 / cm or more, and preferably 3.0 gf cm 2 / cm or less, preferably 2.0 gf·cm 2 / cm or less, and more preferably 1.0 gf·cm 2 / cm or less. In the present invention, the bending stiffness of the nonwoven fabric can be measured by the following method. A nonwoven fabric cut into a size of 20 cm x 20 cm is subjected to bending at a curvature K of ±2.5 cm using a pure bending tester (for example, KES-FB2 (manufactured by Kato Tech Co., Ltd.)). -1 Within the range of constant velocity (deformation speed 0.5cm -1 / sec.) bending test, and the bending stiffness B value per unit length (gf cm 2 / cm) is calculated. The bending test is carried out at three locations in the machine direction and the cross direction, and the average values ​​in each of the machine direction and the cross direction are calculated. The larger value in the machine direction or the cross direction is taken as the bending rigidity value (B value). It is preferable that the nonwoven fabric of the wiping material of the present invention has this bending rigidity value before the aqueous composition is loaded.

[0088] In the wiping material of the present invention, the aqueous composition is preferably supported in an amount of 200% by mass or more relative to the nonwoven fabric in a dry state. This mass % is the mass ratio of the aqueous composition of the present invention to the mass of the nonwoven fabric in a dry state (support rate (mass %)), and is calculated using the following formula: Loading rate (mass%)=((mass of nonwoven fabric impregnated with aqueous composition) / (mass of dried nonwoven fabric)−1)×100 The loading rate is preferably 200% by mass or more, more preferably 250% by mass or more, even more preferably 300% by mass or more, and preferably 600% by mass or less, more preferably 550% by mass or less, even more preferably 500% by mass or less.

[0089] The wiping material of the present invention can be used to wipe articles or the body. Examples of articles include, but are not limited to, articles worn on the body such as clothing, shoes, hats, and helmets, articles such as bags and satchels, furniture such as mattresses, sofas, desks, and chairs, bedding, and other household items. Shoes are one of the suitable objects for the wiping material of the present invention.

[0090] The present invention provides a method for producing a cleaning material, which comprises impregnating a nonwoven fabric with an aqueous composition containing components (a), (b), (c), and water, wherein the molar ratio of the content of component (a) to the content of divalent ions based on component (b) is (divalent ion content) / (content of component (a)) from 0.4 to 40. The present invention also provides a method for producing a cleaning material, which comprises mixing components (a), (b), (c), and water to prepare an aqueous composition, and impregnating a nonwoven fabric with the resulting aqueous composition, wherein, in preparing the aqueous composition, components (a) and (b) are mixed such that the molar ratio of the amount of component (a) mixed to the amount of divalent ions based on component (b) mixed (amount of divalent ions mixed) / (amount of component (a) mixed) is from 0.4 to 40. These production methods may be the method for producing the cleaning material of the present invention. The details described for the cleaning material of the present invention can be applied to these production methods, as appropriate. In this case, the content of each component in the composition can be applied by replacing it with the mixed amount in the mixed component, for example.

[0091] [Wipe method] The present invention provides a wiping method in which an object is wiped with the wiping material of the present invention. Specific examples and preferred examples of the aqueous composition and nonwoven fabric are the same as those of the wiping material of the present invention. When wiping an object, components (a) and (c) adhere to the object, thereby imparting a bactericidal effect, etc. In addition, dirt on the object may be removed by wiping. In the wiping method of the present invention, the object may be any of the articles or bodies described for the wiping material of the present invention, but shoes are preferred. Wiping may usually be performed manually.

[0092] [Adsorption suppression method] The present invention provides an adsorption suppression method for suppressing adsorption of components (a) and (c) to a nonwoven fabric when an aqueous composition containing the components (a) and (c) contacts the nonwoven fabric, comprising further adding component (b) to the aqueous composition such that the molar ratio of the content of component (a) to the content of divalent ions based on component (b) (divalent ion content) / (content of component (a)) is 0.4 to 40. This method may also be an adsorption suppression method in which component (b) is further added to an aqueous composition containing the components (a) and (c) used in contact with the nonwoven fabric such that the molar ratio of the content of component (a) to the content of divalent ions based on component (b) (divalent ion content) / (content of component (a)) is 0.4 to 40, thereby suppressing adsorption of components (a) and (c) to the nonwoven fabric when the aqueous composition contacts the nonwoven fabric. Specific examples and preferred examples of the aqueous composition and nonwoven fabric are the same as those of the wiping material of the present invention.

[0093] The present invention was based on the discovery that when a divalent ion derived from component (b) is present in a predetermined molar ratio in an aqueous composition containing components (a) and (c), adsorption of components (a) and (c) to a nonwoven fabric can be suppressed when the aqueous composition comes into contact with the nonwoven fabric. By suppressing adsorption of components (a) and (c) to a nonwoven fabric, for example, when a combination of a nonwoven fabric and an aqueous composition is used as a wiping material, the amounts of components (a) and (c) in the aqueous composition that are transferred from the wiping material to the target object are not reduced, and the effects of components (a) and (c) are more efficiently exerted.

[0094] In addition to the above-described embodiment, the present invention discloses the following aspects. <1> A wiping material comprising a nonwoven fabric and an aqueous composition carried on the nonwoven fabric, the aqueous composition comprises (a) a cationic surfactant (hereinafter referred to as component (a)), (b) an inorganic salt composed of a cation and an anion, wherein the cation is a cation of an element of Group 1 or Group 2 of the periodic table, and at least one of the cation and the anion is a divalent ion (hereinafter referred to as component (b)), (c) a nonionic surfactant (hereinafter referred to as component (c)), and water; the molar ratio of the content of component (a) to the content of divalent ions based on component (b) in the aqueous composition (content of divalent ions) / (content of component (a)) is 0.4 or more and 40 or less; Cleaning material.

[0095] <2> The component (a) is one or more cationic surfactants selected from N-alkylpyridinium salt surfactants and quaternary ammonium salt surfactants. <1> The cleaning material described in

[0096] <3> The component (a) is a quaternary ammonium salt surfactant. <1> or <2> The cleaning material described in

[0097] <4> The component (a) is a compound represented by the following general formula (a1): <1> ~ <3> 1. A wiping material according to any one of the preceding items.

[0098] [ka]

[0099] [In the formula, R 1 ~R 4 each independently represents an alkyl group having 1 to 20 carbon atoms. 1 ~R 4 The number of carbon atoms in any one of X is 8 to 20. - represents a counter ion.

[0100] <5> In general formula (a1), R 1 ~R 4each represents an alkyl group optionally substituted with a group selected from a hydroxy group, an alkoxy group, an acyloxy group, an acylamino group, and an aryl group; <4> The cleaning material described in

[0101] <6> the aryl group is an aryl group having 6 to 20 carbon atoms, and is further an aryl group selected from a phenyl group and a naphthyl group, and is further a phenyl group; <5> The cleaning material described in

[0102] <7> The compound represented by general formula (a1) is R 1 is an alkyl group having 8 to 20 carbon atoms, R 2 and R 4 is an alkyl group having 1 to 3 carbon atoms, R 3 is a compound of an alkyl group having 1 to 10 carbon atoms, <4> ~ <6> 1. A wiping material according to any one of the preceding items.

[0103] <8> In general formula (a1), X - is an ion selected from inorganic or organic carboxylate ions, sulfonate ions, and halogen ions, further is a halogen ion, further is an ion selected from chloride ions and bromide ions, and further is a chloride ion. <4> ~ <7> 1. A wiping material according to any one of the preceding items.

[0104] <9> The component (a) is a compound represented by the following general formula (a1-1): <1> ~ <8> 1. A wiping material according to any one of the preceding items.

[0105] [ka]

[0106] [In the formula, R 11 represents an alkyl group having 8 to 20 carbon atoms, and R 12 and R 13 Each of X independently represents an alkyl group having 1 to 3 carbon atoms. L represents an alkylene group having 1 to 4 carbon atoms, and Ar represents an aryl group.- represents a counter ion.

[0107] <10> In general formula (a1-1), the number of carbon atoms in Ar is preferably 6 or more and preferably 10 or less, more preferably 8 or less, and even more preferably 6. <9> The cleaning material described in

[0108] <11> In general formula (a1-1), Ar is a group selected from an optionally substituted phenyl group and an optionally substituted naphthyl group. <9> or <10> The cleaning material described in

[0109] <12> The compound represented by general formula (a1-1) is R 11 is an unsubstituted alkyl group having 8 to 20 carbon atoms, R 12 and R 13 is an unsubstituted alkyl group having 1 to 3 carbon atoms, L is a methylene group, and Ar is a phenyl group which may have a substituent, <9> ~ <11> 1. A wiping material according to any one of the preceding items.

[0110] <13> The component (a) is an alkylbenzyldimethylammonium chloride in which the alkyl group has 8 to 18 carbon atoms. <1> ~ <12> 1. A wiping material according to any one of the preceding items.

[0111] <14> The aqueous composition contains component (a) in an amount of preferably 0.05% by mass or more, more preferably 0.1% by mass or more, even more preferably 0.2% by mass or more, and preferably 5% by mass or less, more preferably 2% by mass or less, even more preferably 0.5% by mass or less. <1> ~ <13> 1. A wiping material according to any one of the preceding items.

[0112] <15> (b) the element of Group 1 of the periodic table in the component is an element selected from lithium, sodium, and potassium; <1> ~ <14> 1. A wiping material according to any one of the preceding items.

[0113] <16> (b) the element of Group 2 of the periodic table in the component is an element selected from magnesium and calcium; <1> ~ <15> 1. A wiping material according to any one of the preceding items.

[0114] <17> The divalent anion in component (b) is an ion selected from sulfide ion, carbonate ion, and sulfate ion; <1> ~ <16> 1. A wiping material according to any one of the preceding items.

[0115] <18> The component (b) is an inorganic salt containing, as a divalent ion, one or more ions selected from calcium ions, magnesium ions, sulfate ions, and sulfite ions; <1> ~ <17> 1. A wiping material according to any one of the preceding items.

[0116] <19> (b) component is an inorganic salt selected from calcium chloride, magnesium chloride, calcium nitrate, magnesium nitrate, lithium sulfate, sodium sulfate, potassium sulfate, magnesium sulfate, sodium sulfite, and magnesium sulfite; <1> ~ <18> 1. A wiping material according to any one of the preceding items.

[0117] <20> The aqueous composition contains component (b) in an amount of preferably 0.1% by mass or more, more preferably 0.2% by mass or more, even more preferably 0.4% by mass or more, and preferably 10% by mass or less, more preferably 5% by mass or less, even more preferably 2% by mass or less. <1> ~ <19> 1. A wiping material according to any one of the preceding items.

[0118] <21> In the aqueous composition, the molar ratio of the content of component (a) to the content of divalent ions based on component (b) (content of divalent ions) / (content of component (a)) is 0.4 or more, preferably 0.5 or more, more preferably 0.9 or more, even more preferably 2.0 or more, still more preferably 4.0 or more, and is 40 or less, preferably 20 or less. <1> ~ <20> 1. A wiping material according to any one of the preceding items.

[0119] <22> The component (c) is a polyoxyalkylene-type nonionic surfactant, and further is a nonionic surfactant containing an ethyleneoxy group. <1> ~ <21> 1. A wiping material according to any one of the preceding items.

[0120] <23> The nonionic surfactant containing an ethyleneoxy group is a nonionic surfactant represented by the following general formula (c1): <22> The cleaning material described in R 1c (CO) m O-(AO) n -R 2c (c1) [In the formula, R 1c is an aliphatic hydrocarbon group having 9 to 18 carbon atoms, and R 2c is a hydrogen atom or a methyl group. CO is a carbonyl group, and m is the number 0 or 1. AO group is an alkyleneoxy group containing an ethyleneoxy group and having 2 to 4 carbon atoms. n is the average number of moles added, which is a number of 1 to 50.

[0121] <24> In general formula (c1), R 1c has 9 or more carbon atoms, preferably 10 or more carbon atoms, more preferably 11 or more carbon atoms, and preferably 18 or less carbon atoms, more preferably 16 or less carbon atoms, even more preferably 15 or less carbon atoms, and even more preferably 14 or less carbon atoms; <23> The cleaning material described in

[0122] <25> In general formula (c1), R 1c is a group selected from alkyl groups and alkenyl groups; <23> or <24> The cleaning material described in

[0123] <26> In the general formula (c1), the AO group is an alkyleneoxy group having 2 to 3 carbon atoms and containing an ethyleneoxy group, preferably an ethyleneoxy group. <23> ~ <25> 1. A wiping material according to any one of the preceding items.

[0124] <27> In general formula (c1), n ​​is 1 or more, preferably 3 or more, more preferably 4 or more, even more preferably 5 or more, still more preferably 6 or more, and 50 or less, preferably 40 or less, more preferably 30 or less, even more preferably 20 or less, still more preferably 15 or less, still more preferably 12 or less, still more preferably 10 or less, still more preferably 8 or less, still more preferably 7 or less. <23> ~ <26> 1. A wiping material according to any one of the preceding items.

[0125] <28> The aqueous composition contains component (c) in an amount of preferably 0.1% by mass or more, more preferably 0.2% by mass or more, even more preferably 0.3% by mass or more, and preferably 5% by mass or less, more preferably 2% by mass or less, even more preferably 1% by mass or less. <1> ~ <27> 1. A wiping material according to any one of the preceding items.

[0126] <29> In the aqueous composition, the molar ratio of the content of component (c) to the content of divalent ions based on component (b) (content of divalent ions) / (content of component (c)) is preferably 0.4 or more, more preferably 0.5 or more, even more preferably 0.9 or more, still more preferably 2.0 or more, still more preferably 4.0 or more, and is preferably 40 or less, more preferably 20 or less. <1> ~ <28> 1. A wiping material according to any one of the preceding items.

[0127] <30> The aqueous composition contains a surfactant other than the component (a) and the component (c) [hereinafter referred to as the component (c')]. <1> ~ <29> 1. A wiping material according to any one of the preceding items.

[0128] <31> The content of component (c') in the aqueous composition is 0.5% by mass or less, preferably 0.1% by mass or less, and more preferably 0.05% by mass or less. <30> The cleaning material described in

[0129] <32> The aqueous composition contains (d) an organic solvent (hereinafter referred to as component (d)). <1> ~ <31> 1. A wiping material according to any one of the preceding items.

[0130] <33> (d) The ClogP of the component is preferably −1.6 or more, more preferably −1.3 or more, and preferably 0.8 or less, more preferably 0.5 or less. <32> The cleaning material described in

[0131] <34> Component (d) is an organic solvent having a hydroxyl group with a ClogP of -2.0 or more and less than 1.0. <32> or <33> The cleaning material described in

[0132] <35> The component (d) is one or more organic solvents having a hydroxyl group selected from the following components (d1) to (d3): <32> ~ <34> 1. A wiping material according to any one of the preceding items. Component (d1): a monohydric alcohol having 2 to 6 carbon atoms, and an organic solvent having a hydroxyl group and a ClogP of -2.0 or more and less than 1.0 Component (d2): an organic solvent having a hydroxyl group, which is an alcohol having 2 to 12 carbon atoms and a hydroxyl group of from 2 to 12, and has a ClogP of from -2.0 to less than 1.0 Component (d3): An organic solvent having a hydrocarbon group with 1 to 8 carbon atoms, an ether group, and a hydroxyl group, and having a ClogP of -2.0 or more and less than 1.0 (however, the hydrocarbon group does not include aromatic groups).

[0133] <36> The component (d1) is at least one selected from ethanol, 1-propanol, and 2-propanol, and is preferably ethanol. <35> The cleaning material described in

[0134] <37> The component (d2) is one or more selected from ethylene glycol, propylene glycol, glycerin, diethylene glycol, and dipropylene glycol. <35> or <36> The cleaning material described in

[0135] <38> The aqueous composition contains component (d) in an amount of preferably 0.1% by mass or more, more preferably 0.5% by mass or more, even more preferably 1% by mass or more, and preferably 30% by mass or less, more preferably 20% by mass or less, even more preferably 10% by mass or less. <1> ~ <37> 1. A wiping material according to any one of the preceding items.

[0136] <39> The aqueous composition contains water, and preferably contains water in an amount of 70% by mass or more, more preferably 75% by mass or more, even more preferably 80% by mass or more, and preferably 99% by mass or less, more preferably 98% by mass or less, even more preferably 97% by mass or less. <1> ~ <38> 1. A wiping material according to any one of the preceding items.

[0137] <40> The pH of the aqueous composition at 25°C is preferably 6 or more, more preferably 6.5 or more, even more preferably 7 or more, and preferably 10 or less, more preferably 9 or less, even more preferably 8 or less. <1> ~ <39> 1. A wiping material according to any one of the preceding items.

[0138] <41> The nonwoven fabric comprises hydrophilic fibers and / or hydrophobic fibers. <1> ~ <40> 1. A wiping material according to any one of the preceding items.

[0139] <42> The nonwoven fabric is a nonwoven fabric in which the proportion of hydrophilic fibers in the constituent fibers is 50% by mass or more. <1> ~ <41> 1. A wiping material according to any one of the preceding items.

[0140] <43> The nonwoven fabric contains, among its constituent fibers, 50% by mass or more and 95% by mass or less of hydrophilic fibers and 5% by mass or more and 50% by mass or less of hydrophobic fibers. <1> ~ <42> 1. A wiping material according to any one of the preceding items.

[0141] <44> The nonwoven fabric contains hydrophilic fibers in an amount of preferably 50% by mass or more, more preferably 60% by mass or more, and even more preferably 70% by mass or more of the constituent fibers, provided that the total mass% of the hydrophilic fibers and the hydrophobic fibers is 100% by mass. <43> The cleaning material described in

[0142] <45> The nonwoven fabric preferably contains hydrophobic fibers in an amount of 5% by mass or more, more preferably 10% by mass or more, and even more preferably 15% by mass or more of the constituent fibers, provided that the total mass% of the hydrophilic fibers and the hydrophobic fibers is 100% by mass. <43> or <44> The cleaning material described in

[0143] <46> The basis weight of the nonwoven fabric is preferably 10 g / m 2 More preferably, 20 g / m 2 or more, and preferably 100 g / m 2 Less than 80 g / m 2 More preferably 60 g / m or less 2 Below is the <1> ~ <45> 1. A wiping material according to any one of the preceding items.

[0144] <47> The bending stiffness value (B value) of the nonwoven fabric is preferably 0.050 gf cm 2 / cm or more, preferably 0.10 gf·cm 2 / cm or more, and more preferably 0.15gf·cm 2 / cm or more, and even more preferably 0.20 gf cm 2 / cm or more, and preferably 3.0 gf cm 2 / cm or less, preferably 2.0 gf·cm 2 / cm or less, and more preferably 1.0 gf·cm 2 / cm or less, <1> ~ <46> 1. A wiping material according to any one of the preceding items.

[0145] <48> The nonwoven fabric is a sheet-like nonwoven fabric. <1> ~ <47> 1. A wiping material according to any one of the preceding items.

[0146] <49> The aqueous composition is supported in an amount of preferably 200% by mass or more, more preferably 250% by mass or more, even more preferably 300% by mass or more, and preferably 600% by mass or less, more preferably 550% by mass or less, even more preferably 500% by mass or less, based on the nonwoven fabric in a dry state. <1> ~ <48> 1. A wiping material according to any one of the preceding items.

[0147] <50> the aqueous composition is prepared by blending component (a), component (b), component (c), and water under predetermined conditions, and the molar ratio of the blending amount of component (a) to the blending amount of divalent ions based on component (b) (blended amount of divalent ions) / (blended amount of (a)) is 0.4 or more and 40 or less; <1> ~ <49> 1. A wiping material according to any one of the preceding items.

[0148] <51> It is for shoes, <1> ~ <50> 1. A wiping material according to any one of the preceding items.

[0149] <52> <1> ~ <51> A wiping method comprising wiping an object with the wiping material described in any one of the above.

[0150] <53> The object is a shoe, <52> The wiping method described in

[0151] <54> An adsorption suppression method for suppressing adsorption of the components (a) and (c) to a nonwoven fabric when an aqueous composition containing the components (a) and (c) comes into contact with the nonwoven fabric, the method comprising: Component (b) is further added to the aqueous composition so that the molar ratio of the content of component (a) to the content of divalent ions based on component (b) (content of divalent ions) / (content of component (a)) is 0.4 or more and 40 or less. Adsorption suppression method.

[0152] <55> A method for producing a wiping material, comprising impregnating a nonwoven fabric with an aqueous composition containing component (a), component (b), component (c), and water, wherein the molar ratio of the content of component (a) to the content of divalent ions based on component (b) (divalent ion content) / (content of component (a)) is 0.4 or more and 40 or less.

[0153] <56> A method for producing a wiping material, comprising mixing components (a), (b), (c), and water to prepare an aqueous composition, and impregnating a nonwoven fabric with the aqueous composition, wherein, when preparing the aqueous composition, components (a) and (b) are mixed so that the molar ratio of the amount of component (a) mixed to the amount of divalent ions based on component (b) mixed (amount of divalent ions mixed) / (amount of component (a) mixed) is 0.4 or more and 40 or less.

[0154] <57> <1> ~ <51> A method for producing a wiping material according to any one of the above. <55> or <56> A method for producing the cleaning material described in [Example]

[0155] The aqueous compositions shown in the table were prepared, loaded onto nonwoven fabric, and evaluated as follows. The results are shown in the table. In the table, (divalent ions) / (a) is the molar ratio of the content of component (a) to the content of divalent ions based on component (b), i.e., (content of divalent ions) / (content of component (a)). The pH of the composition was adjusted to the value shown in the table with hydrochloric acid and / or sodium hydroxide. The amounts used are shown in the table as appropriate amounts.

[0156] <Examples 1 to 4 and Comparative Examples 1 to 3> (1) Anti-adsorption test A sheet-shaped spunlace nonwoven fabric was prepared using a rayon: (polypropylene-polyethylene mixed fiber) = 80:20 (mass ratio) with a basis weight of 60 g / m. 2 , 150mm x 100mm blended nonwoven fabric, or rayon: polyester = 60:40 (mass ratio), basis weight 35g / m 2A 150mm x 100mm blended nonwoven fabric was impregnated with the aqueous composition to a loading rate of 400% by mass. After leaving it sealed for one week, the squeezed liquid was collected by applying pressure. The amounts of component (a) and component (c) in the squeezed liquid were measured using the methods described below, and compared with the amounts of component (a) and component (c) in the aqueous composition before impregnation to evaluate the anti-adsorption properties according to the following criteria. Two nonwoven fabrics were evaluated for one aqueous composition, and the average scores are shown in the table. The higher the anti-adsorption score, the less likely the amount of component (a) or (c) was to be adsorbed by the nonwoven fabric, and the better the effect on the wiped object. Evaluation criteria: 5 points: The amount of component (a) or (c) in the squeezed liquid is 90% or more and 100% or less of the amount of component (a) or (c) in the aqueous composition before impregnation. 4 points: The amount of component (a) or (c) in the squeezed liquid is 80% or more and less than 90% of the amount of component (a) or (c) in the aqueous composition before impregnation. 3 points: The amount of component (a) or (c) in the squeezed liquid is 60% or more and less than 80% of the amount of component (a) or (c) in the aqueous composition before impregnation. 2 points: The amount of component (a) or (c) in the squeezed liquid is 40% or more and less than 60% of the amount of component (a) or (c) in the aqueous composition before impregnation. 1 point: The amount of component (a) or (c) in the expression liquid is less than 40% of the amount of component (a) or (c) in the aqueous composition before impregnation.

[0157] [Quantitative method for component (a) or component (c)] Diluted with methanol and quantified by LC-MS. ·Equipment: SHIMADZU LCMS-2020 Column: Shim-pack XR-ODS 50L x 2.0 (2.0mm i.d. x 50mm) Eluent A: 10 mM ammonium acetate (solvent: distilled water) / B: 10 mM ammonium acetate (solvent: methanol) Time Program: B50% (0-4 min) - B100% (4-11 min) - B50% (11-15 min)

[0158] (2) Antibacterial test by wiping A sheet-shaped spunlace nonwoven fabric was prepared using a rayon: (polypropylene-polyethylene mixed fiber) = 80:20 (mass ratio) with a basis weight of 60 g / m. 2 A 150mm x 100mm blended nonwoven fabric was impregnated with the aqueous composition to a loading rate of 400% by mass. This was sealed in an aluminum bag and stored at 30°C for at least one week to prepare a sample for evaluation. A negative control sample was also prepared by impregnating a 5cm x 5cm piece of synthetic leather with a polyurethane surface with each sample 10 times under a 1kg load, drying overnight, and then subjecting the sample to the antibacterial test (see JIS Z 2801) described below. *Antibacterial test Staphylococcus aureus NBRC12732 and Staphylococcus epidermidis ATCC12228 were used as test bacteria. The test bacteria cultured on SCD agar medium were suspended in physiological saline containing SCD medium at a concentration of 1 / 10, and 1.0 × 10 6 CFU / mL or more, 9.0×10 6 A bacterial solution was prepared so that the bacterial count was less than CFU / mL. 0.1 mL of the bacterial solution was added to the surface of each synthetic leather, and a 4 cm x 4 cm stomacher film was placed over it, pressing gently to ensure the bacterial solution was evenly distributed across the entire film. The film was then placed in a petri dish and cultured at a relative humidity of 90% or higher and a temperature of 37 ± 1°C for 24 ± 1 hours. The film was then placed in 10 mL of LP diluted solution, an inactivating agent, and rubbed thoroughly to wash out the test bacteria. This was then cultured on SCD agar medium, and the viable bacteria count was performed. The antibacterial activity value was calculated using the following formula: R = log(A) - log(B) Where R: antibacterial activity value A: Negative control viable bacterial count (CFU / cm 2 ) B: Number of viable bacteria in each sample (CFU / cm 2) is.

[0159] [Table 1]

[0160] [Table 2]

[0161] In Table 2, component (bx) is a comparative compound of component (b).

[0162] [Table 3]

[0163] [Table 4]

[0164] In the table, the alkyl groups of alkyldimethylbenzylammonium chloride (molecular weight 354.02) are mainly composed of 12 and 14 carbon atoms. In addition, polyoxyethylene alkyl ether (1) is Emulgen 105 (HLB 9.7, Kao Corporation), polyoxyethylene alkyl ether (2) is Emulgen 108 (HLB 12.1, Kao Corporation), and polyoxyethylene alkyl ether (3) is Emulgen 121 (HLB 16.6, Kao Corporation). Also, the dimethylpolysiloxane is DOWSIL DK Q1-1247 ANTIFORM (Dow-Toray Industries, Inc.).

[0165] <Example 5> Wiping materials were manufactured using the aqueous compositions and nonwoven fabrics shown in Table 5, and five evaluators performed a sensory evaluation of the ease of wiping the inside and outside of women's shoes made of synthetic leather (grain surface, i.e., the surface material is polyurethane and has a grained finish) using the following criteria. The average values ​​of the five evaluators' results are shown in the table. 3 points: Very easy to wipe 2 points: Easy to wipe 1 point: Somewhat easy to wipe 0 points: Difficult to wipe

[0166] [Table 5]

Claims

1. 1. A method for suppressing adsorption of an aqueous composition containing (a) a cationic surfactant [hereinafter referred to as component (a)] and (c) a nonionic surfactant [hereinafter referred to as component (c)] to a nonwoven fabric when the aqueous composition contacts the nonwoven fabric, the method comprising: (b) an inorganic salt consisting of a cation and an anion, wherein the cation is a cation of an element of Group 1 or Group 2 of the periodic table, and at least one of the cation and the anion is a divalent ion [hereinafter referred to as component (b)], is further added to the aqueous composition so that the molar ratio of the content of component (a) to the content of divalent ions based on component (b) (content of divalent ions) / (content of component (a)) is 4.8 or more and 19.3 or less, and the pH of the aqueous composition at 25°C is 8 or more and 10 or less; Adsorption suppression method.

2. The method for suppressing adsorption according to claim 1, wherein the aqueous composition contains 0.05% by mass or more and 5% by mass or less of component (a).

3. 3. The method for suppressing adsorption according to claim 1, wherein the component (c) is a polyoxyalkylene-type nonionic surfactant in an amount of 0.1% by mass or more and 5% by mass or less in the aqueous composition.

4. The method for suppressing adsorption according to any one of claims 1 to 3, wherein the nonwoven fabric is a nonwoven fabric in which the proportion of hydrophilic fibers in the constituent fibers is 50 mass % or more.

5. The method for suppressing adsorption according to any one of claims 1 to 4, wherein the nonwoven fabric is a sheet-like nonwoven fabric.

6. The method for suppressing adsorption according to any one of claims 1 to 5, wherein the aqueous composition is supported in an amount of 200% by mass to 600% by mass relative to the nonwoven fabric in a dry state.

7. 7. The adsorption suppression method according to any one of claims 1 to 6, wherein the cationic surfactant of component (a) is selected from lauryl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, stearyl trimethyl ammonium chloride, distearyl dimethyl ammonium chloride, hexadecyl trimethyl ammonium chloride, hexadecyl trimethyl ammonium bromide, myristyl trimethyl ammonium bromide, alkylbenzyl dimethyl ammonium chloride having from 8 to 18 carbon atoms, stearyl phenyl ethyl dimethyl ammonium chloride, lauryl trihydroxymethyl ammonium chloride, N-dodecyl pyridinium chloride, and dioctyl dimethyl ammonium chloride.

8. The adsorption suppression method according to any one of claims 1 to 7, wherein component (b) is an inorganic salt selected from calcium chloride, magnesium chloride, calcium nitrate, magnesium nitrate, lithium sulfate, sodium sulfate, potassium sulfate, magnesium sulfate, sodium sulfite, and magnesium sulfite.

9. The method for suppressing adsorption according to any one of claims 1 to 8, wherein component (c) is a nonionic surfactant represented by the following general formula (c1): R １ｃ (CO) ｍ O-(AO) ｎ -R ２ｃ (c1) [In the formula, R １ｃ is an aliphatic hydrocarbon group having 9 to 18 carbon atoms, and R ２ｃ is a hydrogen atom or a methyl group. CO is a carbonyl group, and m is the number 0 or 1. AO is an ethyl group. and n is the average number of moles added, which is a number of 1 to 50.

10. The method for suppressing adsorption according to any one of claims 1 to 9, wherein component (b) is added in an amount of 0.1 mass % to 10 mass %.

11. The method for suppressing adsorption according to any one of claims 1 to 10, wherein the aqueous composition contains, as component (d), 0.1% by mass or more and 30% by mass or less of an organic solvent having a hydroxyl group and having a ClogP of -2.0 or more and less than 1.0.

Images