Detergent composition and washing method
The detergent composition addresses the challenge of balancing cleaning power and fragrance retention by using a nonionic surfactant and specific fragrance components, achieving effective cleaning and lingering fragrance through optimized concentrations.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- LION CORP
- Filing Date
- 2024-12-10
- Publication Date
- 2026-06-22
Smart Images
Figure 2026100954000001 
Figure 2026100954000002 
Figure 2026100954000003
Abstract
Description
Technical Field
[0001] The present disclosure relates to a detergent composition and a washing method.
Background Art
[0002] In recent years, in liquid detergents for textile products, in addition to viewpoints such as detergency, resource saving, energy saving, and reduction of environmental load, consumers have been demanding that the cleaning effect can be felt. In particular, the fragrance remaining on textile products after washing is an important factor in evoking a sense of cleanliness. For this reason, in liquid detergents for textile products, it is required to be easy to impart a fragrance to textile products (high residual fragrance property).
[0003] In Patent Document 1, a liquid detergent with enhanced residual fragrance property has been proposed by using a complex obtained by blending a water-soluble metal salt, a chelating compound, an amide compound, etc. Also, in Patent Document 2, a type of liquid detergent for application to textile products with enhanced residual fragrance property by using a fragrance component having a high LogP has been proposed.
Prior Art Documents
Patent Documents
[0004]
Patent Document 1
Patent Document 2
Summary of the Invention
Problems to be Solved by the Invention
[0005] However, the liquid detergent described in Patent Document 1 did not necessarily have sufficient cleaning power. Furthermore, as in Patent Document 2, liquid detergents using fragrance components with a high LogP, i.e., high hydrophobicity, when diluted to make a detergent solution (laundry solution), the surfactant is consumed in the detergent solution to solubilize the fragrance, making it difficult to obtain sufficient cleaning power. Moreover, if the amount of surfactant is increased to compensate for the amount consumed to solubilize the fragrance, the fragrance is altered by the base odor of the surfactant remaining on the clothes, and sufficient residual fragrance cannot be obtained. Therefore, the object of this disclosure is to provide a detergent composition and a washing method that can achieve both good cleaning power and lingering fragrance. [Means for solving the problem]
[0006] This disclosure has the following aspects: <1> (A) Components: A nonionic surfactant represented by the following formula (a1), R 1 -O-[(EO) s (PO) t ]-H ···(a1) [In formula (a1), R 1 is a hydrocarbon group having 12 to 18 carbon atoms, EO is an oxyethylene group, s is a number from 12 to 25 indicating the average number of repeats of EO, PO is an oxypropylene group, and t is a number from 1 to 5 indicating the average number of repeats of PO. EO and PO may be added randomly or in a block manner. However, R 1 In R 1 It is 50% or more of the total mass. (B) Ingredients: Fragrance composition and (C) Components: One or more antibacterial agents selected from the group consisting of phenolic antibacterial agents (C1) and cationic antibacterial agents (C2), (D) Ingredients: Water and A detergent composition containing the following: <2> The aforementioned component (C) is a phenolic antibacterial agent (C1). <1> The cleaning agent composition described above. <3> The cleaning composition according to <1> or <2>, wherein the component (B) contains a fragrance component (B1) having a logP value of less than 3, and the proportion of the fragrance component (B1) with respect to the total mass of the component (B) is 15% by mass or more. <4> A washing method for washing clothes using a cleaning liquid obtained by diluting the cleaning composition according to <1> to <3>, wherein the concentration of the component (A) in the cleaning liquid is 30 to 150 ppm by mass.
Advantages of the Invention
[0007] According to the cleaning composition and the washing method of the present disclosure, good detergency and residual fragrance can be achieved simultaneously.
Modes for Carrying Out the Invention
[0008] (Cleaning Composition) The cleaning composition of the present disclosure is a liquid composition containing components (A) to (D). In this specification and the claims, "~" indicating a numerical range means including the numerical values described before and after it as the lower limit value and the upper limit value.
[0009] The content of the component (C2) described later is the content in the form of a salt. Among the optional surfactants described later, the blending amount of the anionic surfactant is the blending amount as an acid when blended in the form of an acid, and the blending amount as a salt when blended in the state of forming a salt. In addition, the content of the components used as a solution or a dispersion is all in terms of the pure component value excluding the solvent.
[0010] <Component (A)> The component (A) is a nonionic surfactant represented by the following formula (a1). R 1 -O-[(EO) j / (PO) k -H ···(a1) [In the formula (a1), R 1is a hydrocarbon group having 12 to 18 carbon atoms, EO is an oxyethylene group, j is a number from 12 to 25 indicating the average number of repeats of EO, PO is an oxypropylene group, and k is a number from 1 to 5 indicating the average number of repeats of PO. EO and PO may be added randomly or in a block manner. However, R 1 In R 1 It is 50% or more of the total mass.
[0011] In formula (a1), R 1 The number of carbon atoms is 12 to 18, and preferably 12 to 14. (A) R 1 The proportion of C14 hydrocarbon groups to the total mass of hydrocarbon groups is 50% by mass or more, preferably 70% by mass or more, more preferably 80% by mass or more, and particularly preferably 100% by mass. When the proportion of C14 hydrocarbon groups is above the lower limit mentioned above, the cleaning power can be further enhanced.
[0012] Surfactants using natural oil raw materials typically have lipophilic groups with 12 to 14 carbon atoms. However, the hydrophobicity of hydrocarbon groups with 14 carbon atoms is higher than that of hydrocarbon groups with 12 carbon atoms, resulting in a decrease in critical micelle concentration (CMC). Therefore, R 1 Reducing the proportion of C12 hydrocarbon groups in the solution lowers the CMC (critical micelle concentration), thereby improving cleaning power at low concentrations. 1 Reducing the proportion of hydrocarbon groups with 16 or more carbon atoms in the composition can further improve the low-temperature stability of the detergent composition. R 1 The distribution of carbon atoms in this material is measured by gas chromatography-mass spectrometry (GC-MS).
[0013] In formula (a1), j is between 12 and 25, preferably between 14 and 20, more preferably between 14 and 18, and even more preferably between 14 and 16. When j is within the above range, the sebum stain removal power is good. When j is below the above upper limit, it is easier to avoid excessive hydrophilicity and a decrease in the CMC (critical micelle concentration) of component (A).
[0014] In formula (a1), k is between 1 and 5, with 1 to 3 being more preferable. When k is above the lower limit, the retention ability of component (B) is improved, and good residual fragrance is obtained. When k is below the upper limit, the cleaning power at low concentrations can be further enhanced.
[0015] In formula (a1), EO represents an oxyethylene group and PO represents an oxypropylene group. EO and PO may be added randomly or in a block manner, with random addition and PO-terminated block addition being preferred. Random addition can further enhance the low-temperature stability of the detergent composition. PO-terminated block addition can further enhance rinsability during washing. One method for arranging EO and PO randomly is to introduce ethylene oxide and propylene oxide simultaneously. Methods for arranging EO and PO in a block-like manner include introducing ethylene oxide followed by propylene oxide, introducing propylene oxide followed by ethylene oxide, introducing ethylene oxide followed by propylene oxide, and then introducing ethylene oxide again. The aforementioned component (A) may be a single type or a combination of two or more types.
[0016] (A) The content of component (A) is preferably 15 to 60% by mass, more preferably 20 to 50% by mass, and even more preferably 25 to 40% by mass, relative to the total mass of the detergent composition. If the content of component (A) is above the lower limit, the cleaning power can be further enhanced. If the content of component (A) is below the upper limit, excessive washing away of fragrance (oil components) remaining on clothing can be avoided, and the lingering fragrance can be further improved.
[0017] The concentration of component (A) in the washing solution is preferably 30 to 150 ppm by mass, more preferably 30 to 120 ppm by mass, even more preferably 40 to 100 ppm by mass, and particularly preferably 50 to 80 ppm by mass. If the concentration of component (A) in the cleaning solution is above a preferred lower limit, the cleaning power is likely to improve. If it is below a preferred upper limit, the amount of residual surfactant on the clothes will increase, making it easier to avoid deterioration of the lingering fragrance due to the base odor. In addition, it is easier to avoid the surfactant washing away component (B) (oil component) remaining on the clothes, which would reduce the lingering fragrance.
[0018] <(B) component> Component (B) is a fragrance composition. Component (B) preferably contains a fragrance component ((B1)) with a logP value of 3 or less, and may also contain a fragrance component ((B2)) with a logP value greater than 3. The proportion of component (B1) contained in component (B) is preferably 15% by mass or more, more preferably 20% by mass or more, even more preferably 30% by mass or more, and particularly preferably 40% by mass or more. The upper limit is not particularly limited, but for example it is 80% by mass.
[0019] (B1) The proportion of component (B1) being above the preferred lower limit means that the lipophilicity of the fragrance does not become too high. If the lipophilicity of the fragrance is not too high, the surfactant is consumed in solubilizing the fragrance, reducing the amount of surfactant that contributes to cleaning, and thus reducing the cleaning power. (B1) The proportion of component (B1) being below the preferred upper limit means that the hydrophilicity of the fragrance does not become too high. If the hydrophilicity of the fragrance does not become too high, the fragrance components will not dissolve easily in water, and the residual fragrance will be improved.
[0020] (B) The content of component (B) is preferably 0.3 to 3% by mass, more preferably 0.5 to 2.5% by mass, and particularly preferably 1 to 2% by mass, based on the total mass of the detergent composition. If the content of component (B) is above the preferred lower limit, the lingering fragrance will be further improved. If it is below the preferred upper limit, the surfactant will be consumed in solubilizing component (B), reducing the amount of surfactant that contributes to cleaning, and thus making it easier to avoid a decrease in cleaning power.
[0021] The concentration of component (B) in the washing solution is preferably 1 to 6 ppm by mass, more preferably 1 to 5 ppm by mass, and even more preferably 2 to 4 ppm by mass. If the concentration of component (B) in the cleaning solution is above a preferred lower limit, the residual fragrance will be further improved. If it is below a preferred upper limit, the surfactant will be consumed in solubilizing component (B), reducing the amount of surfactant that contributes to cleaning, and thus making it easier to avoid a decrease in cleaning power.
[0022] <(C) component> (C) Component is one or more antibacterial agents selected from the group consisting of phenolic antibacterial agents (C1) and cationic antibacterial agents (C2).
[0023] [(C1) component] The phenolic antimicrobial agent (C1) is an antimicrobial agent comprising a phenolic compound having a phenolic hydroxyl group or a salt thereof. The (C1) component preferably has one or two aromatic hydrocarbon nuclei. Generally, phenolic compounds having a phenolic hydroxyl group or a salt thereof have antibacterial effects, as described in Wood Preservation, Vol. 1983, No. 24, pp. 3-17, and in Yoshiyuki Inoue et al.
[0024] The (C1) component is preferably one or more nonionic aromatic compounds selected from the group consisting of the (C1a) component represented by the following formula (c1a) and the (C1b) component represented by the following formula (c1b). Others that may be used include 4-chloro-3,5-dimethylphenol, chlorooxylenol, o-phenylphenol, phenoxyethanol, phenylpropanol, etc.
[0025] [ka]
[0026] [In formula (c1a), X is an oxygen atom or an alkylene group having 1 to 4 carbon atoms, Y is independently a chlorine atom or a bromine atom, a, b, and c are independently 0 or an integer from 1 to 3, m is 0 or 1, and n is 0 or 1.]
[0027] In equation (c1a), -(Y) b This means that b hydrogen atoms bonded to the carbon atoms in the benzene ring are substituted with Y. -(Y) c ,-(OH) m and -(OH) n The same applies to this matter. In formula (c1a), X is an oxygen atom or an alkylene group having 1 to 4 carbon atoms. An oxygen atom is preferred. Y is independently either a chlorine atom or a bromine atom. A chlorine atom is preferred. a, b, and c are each independent integers ranging from 0 to 3. a is preferably 0 or 1. a=0 represents a simple combination. It is preferable that at least one of b and c is 1 or more, and more preferable that both are 1 or more. The sum of b and c is preferably 2 to 6, more preferably 2 to 4, and particularly preferably 2 to 3. m is 0 or 1. n is 0 or 1. The sum of m and n is between 0 and 2, preferably between 0 and 1, and especially preferably 0.
[0028] Specific examples of the (C1a) component represented by formula (c1a) include monochlorohydroxydiphenyl ether, dichlorohydroxydiphenyl ether, trichlorohydroxydiphenyl ether, and benzylchlorophenol. In terms of rinsability, the following compounds are preferred for component (C1a).
[0029] Dichrosan (4,4'-dichloro-2-hydroxydiphenyl ether, a compound in formula (c1a) where X=oxygen atom, Y=chlorine atom, a=1, b=1, c=1, n=0, m=0), Triclosan (2,4,4'-trichloro-2'-hydroxydiphenyl ether, a compound in formula (c1a) where X=oxygen atom, Y=chlorine atom, a=1, b=2, c=1, n=0, m=0).
[0030] [ka]
[0031] [In formula (c1b), V and W are each independently a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R 3 [This is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.]
[0032] In formula (c1b), V and W are preferably both alkyl groups having 1 to 4 carbon atoms. R 3 A hydrogen atom is preferred. Isopropylmethylphenol is preferred as the (C1b) component represented by formula (c1b). Component (C1) may be used alone or in combination of two or more as appropriate.
[0033] [(C2) component] Component (C2) is a cationic antibacterial agent. Examples of component (C2) include quaternary ammonium compounds (hereinafter sometimes referred to as "component (C2a)"), amine compounds (hereinafter sometimes referred to as "component (C2b)"), biguanide compounds (hereinafter sometimes referred to as "component (C2c)"), polymers of diallyldialkylammonium (hereinafter sometimes referred to as "component (C2d)"), and polylysine or its salt (hereinafter sometimes referred to as "component (C2e)").
[0034] (C2a) Component: Quaternary ammonium compound Preferred (C2a) components include monoalkyl or dialkyl cationic surfactants represented by the following general formula (c2a-1) ((C2a-1) component); ethylene oxide-added quaternary ammonium salts represented by the following general formula (c2a-2) ((C2a-2) component); benzalkonium salts represented by the following general formula (c2a-3) ((C2a-3) component); and pyridinium salts represented by the following general formula (c2a-4) ((C2a-4) component).
[0035] [ka]
[0036] [In formula (c2a-1), R 21 ~R 24 Each of these is independently an alkyl group having 1 to 3 carbon atoms, a hydroxyalkyl group having 1 to 3 carbon atoms, a linear or branched alkyl group having 8 to 22 carbon atoms, or a linear or branched alkenyl group having 8 to 22 carbon atoms. However, R 21 ~R 24 At least two of these are independently C1-C3 alkyl groups and / or C1-C3 hydroxyalkyl groups. - These are halide ions or alkyl sulfate ions.
[0037] In the above equation (c2a-1), R 21 ~R 24 When is an alkyl group having 8 to 22 carbon atoms or an alkenyl group having 8 to 22 carbon atoms, the number of carbon atoms is preferably 10 to 21, more preferably 10 to 18, even more preferably 10 to 16, and particularly preferably 12 to 14. In the above formula (c2a-1), Z1 - Examples of halide ions that make up the compound include fluorine atoms, chlorine atoms, bromine atoms, and iodine atoms, but chloride ions are preferred from the standpoint of versatility. Z1 - The alkyl sulfate ions that constitute the compound are preferably those having an alkyl group with 1 to 3 carbon atoms, such as methyl sulfate ions.
[0038] If component (C2a-1) is a monoalkyl cationic surfactant, then R in formula (c2a-1) 21 ~R 24 Of these, three are C1-C3 alkyl groups and / or C1-C3 hydroxyalkyl groups, and one is a C8-C22 linear alkyl group or a C8-C22 linear alkenyl group, Z1 - These are halide ions or alkyl sulfate ions.
[0039] In this case, the C1-C3 alkyl group and / or C1-C3 hydroxyalkyl group are each preferably independently C1-C3 alkyl groups, and more preferably both are methyl groups. Furthermore, the number of carbon atoms in the linear alkyl group having 8 to 22 carbon atoms or the linear alkenyl group having 8 to 22 carbon atoms is preferably 10 to 18, more preferably 12 to 18, and even more preferably 12 to 14. Z1 - Halide ions are preferred, and chloride ions are more preferred.
[0040] If component (C2a-1) is a dialkyl cationic surfactant, then R in the above formula (c2a-1) 21 ~R 24 Of these, two are C1-C3 alkyl groups and / or C1-C3 hydroxyalkyl groups, and the other two are C8-C22 linear alkyl groups or C8-C22 linear alkenyl groups, Z1 - These are halide ions or alkyl sulfate ions.
[0041] In this case, the C1-C3 alkyl group and / or C1-C3 hydroxyalkyl group are each preferably independently C1-C3 alkyl groups, and more preferably both are methyl groups. Furthermore, the number of carbon atoms in the linear alkyl group having 8 to 22 carbon atoms or the linear alkenyl group having 8 to 22 carbon atoms is preferably 10 to 18, and more preferably 10 to 14. Z1 -Halide ions are preferred, and chloride ions are more preferred.
[0042] Specific examples of component (C2a-1) include dodecyltrimethylammonium chloride, tetradecyltrimethylammonium chloride, and didecyldimethylammonium chloride.
[0043] [ka]
[0044] [In formula (c2a-2), R 25 R is an alkyl group having 8 to 22 carbon atoms, or a hydroxyalkyl group having 8 to 22 carbon atoms. 26 This is an alkyl group having 8 to 22 carbon atoms, a hydroxyalkyl group having 8 to 22 carbon atoms, a methyl group, or a tolyl group. m and n indicate the average number of repeating oxyethylene groups, and m+n is 2 or greater. Z2 - These are halide ions or alkyl sulfate ions.
[0045] In the above equation (c2a-2), R 25 The number of carbon atoms in the alkyl group or hydroxyalkyl group in R is 8 to 22, and preferably 10 to 18. 25 Alkyl alkyl groups are preferred, linear or branched alkyl groups are more preferred, and linear alkyl groups are even more preferred. In the above equation (c2a-2), R 26 The number of carbon atoms in the alkyl group or hydroxyalkyl group in R is 8 to 22, and preferably 10 to 18. 26 Among these, methyl groups or tolyl groups are preferred. m+n is preferably 2 to 30, as this allows for a greater antibacterial effect on the items being washed. In the above equation (c2a-2), Z2 - Examples of halide ions that make up the compound include fluorine atoms, chlorine atoms, bromine atoms, and iodine atoms, but chloride ions are preferred from the standpoint of versatility. Z2- The alkyl sulfate ions that constitute the compound are preferably those having an alkyl group with 1 to 3 carbon atoms, such as methyl sulfate ions. For the formulation of component (C2a-2), commercially available products such as Esocard C / 12 (product name, manufactured by Lion Akzo Corporation) can be used.
[0046] [ka]
[0047] [In formula (c2a-3), R 27 and R 28 Each of these is independently an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group having 1 to 3 carbon atoms. 29 R is a linear or branched alkyl group having 8 to 22 carbon atoms, or a linear or branched alkenyl group having 8 to 22 carbon atoms. 30 This is an alkylene group with 1 to 3 carbon atoms. Z3 - These are halide ions or alkyl sulfate ions.
[0048] In the above equation (c2a-3), R 29 The number of carbon atoms in the alkyl or alkenyl group is 8 to 22, preferably 10 to 18, more preferably 10 to 16, and even more preferably 12 to 14. In the above equation (c2a-3), Z3 - Examples of halide ions that make up the compound include fluorine atoms, chlorine atoms, bromine atoms, and iodine atoms, but chloride ions are preferred from the standpoint of versatility. Z3 - The Z3 constituting the alkyl sulfate ion in this compound is preferably one having an alkyl group with 1 to 3 carbon atoms, such as a methyl sulfate ion.
[0049] Examples of (C2a-3) components include coconut alkyldimethylbenzylammonium chloride. For the formulation of (C2a-3) components, commercially available products such as Arcard CB (trade name, manufactured by Lion Akzo Corporation), Hyamine® 3500-J (trade name, manufactured by Lonza Japan Co., Ltd.), and Osban® S (trade name, manufactured by Nippon Pharmaceutical Co., Ltd.) can be used.
[0050] [ka]
[0051] [In formula (c2a-4), R 20 This is an alkyl group with 8 to 22 carbon atoms. Z4 - These are halide ions or alkyl sulfate ions.
[0052] In the above equation (c2a-4), R 20 The number of carbon atoms in the alkyl group is preferably 10 to 18, and more preferably 12 to 16. 20 Linear or branched alkyl groups are preferred, with linear alkyl groups being more preferred. In the above equation (c2a-4), Z4 - Examples of halide ions that make up the compound include fluorine atoms, chlorine atoms, bromine atoms, and iodine atoms, but chloride ions are preferred from the standpoint of versatility. Z4 - The alkyl sulfate ions that constitute the compound are preferably those having an alkyl group with 1 to 3 carbon atoms, such as methyl sulfate ions. (C2a-4) Examples of components include cetylpyridinium chloride. For the formulation of cetylpyridinium chloride, commercially available products from companies such as Wako Pure Chemical Industries, Ltd. can be used.
[0053] (C2b) Component: Amine compound Examples of the (C2b) component include amine compounds represented by the following general formula (c2b).
[0054] [ka]
[0055] [In equation (c2b), s is an integer from 1 to 6. R 31 R is an alkyl group having 8 to 18 carbon atoms or a hydroxyalkyl group having 8 to 18 carbon atoms. 32 is a hydrogen atom or (CH2) t This is NH2. t is an integer between 1 and 6.
[0056] In the above formula (c2b), s is preferably an integer between 1 and 4, more preferably an integer between 2 and 4, and particularly preferably 3, because the antibacterial effect is more easily exhibited on the item being washed. If s exceeds 6, it is difficult to obtain a sufficient antibacterial effect. In the above equation (c2b), R 31 The number of carbon atoms in the alkyl group or hydroxyalkyl group in R is 8 to 18, preferably 8 to 14, more preferably 10 to 14, and even more preferably 12. 31 If the number of carbon atoms in the compound is above the lower limit of the preferred range mentioned above, it is easier to obtain an antibacterial effect. If it is below the upper limit of the preferred range mentioned above, the solubility of the (C2b) component in water is improved. R 31 The alkyl group or hydroxyalkyl group in R may be linear or branched, with linear being preferred. 31 If the chain is linear, the antibacterial effect of the detergent composition can be further enhanced.
[0057] Preferred (C-2) components include tertiary amine compounds represented by the following general formula (c2b-1) ((C2b-1) component) and secondary amine compounds represented by the following general formula (c2b-2) ((C2b-2) component).
[0058] [ka]
[0059] [In equation (c2b-1), s1 is an integer between 1 and 4. R 311This is an alkyl group having 8 to 18 carbon atoms or a hydroxyalkyl group having 8 to 18 carbon atoms.
[0060] In the above formula (c2b-1), s1 is an integer from 1 to 4, and an integer from 2 to 4 is preferred, with 3 being particularly preferred, as this allows for a greater antibacterial effect on the item being washed. In the above equation (c2b-1), R 311 R in the above formula (c2b) is 31 It is similar to that. Specific examples of component (C2b-1) include N,N-bis(3-aminomethyl)alkylamines such as N,N-bis(3-aminomethyl)octylamine, N,N-bis(3-aminomethyl)decylamine, and N,N-bis(3-aminomethyl)dodecylamine; and N,N-bis(3-aminoethyl)alkylamines such as N,N-bis(3-aminoethyl)octylamine, N,N-bis(3-aminoethyl)decylamine, and N,N-bis(3-aminoethyl)dodecylamine. Examples of amines include N,N-bis(3-aminopropyl)alkylamines such as N,N-bis(3-aminopropyl)octylamine, N,N-bis(3-aminopropyl)decylamine, and N,N-bis(3-aminopropyl)dodecylamine; and N,N-bis(3-aminobutyl)alkylamines such as N,N-bis(3-aminobutyl)octylamine, N,N-bis(3-aminobutyl)decylamine, and N,N-bis(3-aminobutyl)dodecylamine. Among these, N,N-bis(3-aminopropyl)alkylamine is preferred, and N,N-bis(3-aminopropyl)dodecylamine is more preferred.
[0061] [ka]
[0062] [In equation (c2b-2), s2 is an integer between 1 and 4. R 312 This is an alkyl group having 8 to 14 carbon atoms or a hydroxyalkyl group having 8 to 14 carbon atoms.
[0063] In the above formula (c2b-2), s2 is an integer from 1 to 4, and an integer from 2 to 4 is preferred, with 3 being particularly preferred, as it allows for a greater antibacterial effect on the item being washed. In the above equation (c2b-2), R 312 The alkyl group or hydroxyalkyl group in R may be linear or branched, with linear being preferred. 312 If the chain is linear, the antibacterial effect of the detergent composition can be further enhanced.
[0064] Specific examples of the (C2b-2) component include N-coconut alkyl-1,3-diaminopropane, N-beef tallow alkyl-1,3-diaminopropane, and N-hydrogenated beef tallow alkyl-1,3-diaminopropane. For the formulation of N-coconut alkyl-1,3-diaminopropane, commercially available products such as Duomin CD (trade name, manufactured by Lion Akzo Corporation) can be used.
[0065] (C2c) component: Biguanide compound Examples of the (C2c) component include biguanide compounds represented by the following general formula (c2c).
[0066] [ka]
[0067] [In equation (c2c), u1 is an integer between 2 and 14. HR] 33 is an organic acid or an inorganic acid. u2 is HR 33 This represents the number of elements, and is an integer between 0 and 5u1.
[0068] In the above formula (c2c), u1 is an integer between 2 and 14, preferably between 10 and 14, more preferably between 11 and 13, and particularly preferably 12. In the above formula (c2c), HR 33 The acid is an organic or inorganic acid, preferably hydrochloric acid, gluconic acid, or acetic acid, with hydrochloric acid being more preferred.
[0069] u2 is an integer between 0 and 5u1. If u2 is 0, the (C2c) component is polyhexamethylene biguanide. If u2 is not 0, the (C2c) component is a partial or total salt of polyhexamethylene biguanide. u2 is preferably an integer between 1 and 5u1, more preferably an integer between 2 and 3u1, even more preferably an integer between u1 and 2u1, and particularly preferably u1.
[0070] Specific examples of the (C2c) component include poly(hexamethylene biguanide) hydrochloride. For example, poly(hexamethylene biguanide) hydrochloride is used in the formulation of Proxel® IB (trade name, manufactured by Lonza Japan Co., Ltd.; in the above formula (c2c), both u1 and u2 are 12, R 33 is a chlorine atom (HR 33 Commercially available products such as those containing hydrochloric acid are used.
[0071] (C2d) component: polymer of diallyldialkylammonium Examples of the (C2d) component include polymers having repeating units of diallyldialkylammonium represented by the following general formula (c2d).
[0072] [ka]
[0073] [In formula (c2d), R 34 and R 35 These are each an alkyl group having 1 to 3 carbon atoms. Z5 - [where w is a halide ion or alkyl sulfate ion, and w indicates the average degree of polymerization.]
[0074] In the above equation (c2d), R 34 and R 35 Each of these is an alkyl group having 1 to 3 carbon atoms, and a methyl group is preferred. In the above equation (c2d), Z5 -Examples of halide ions that make up the compound include fluorine atoms, chlorine atoms, bromine atoms, and iodine atoms, and chlorine atoms are preferred from the standpoint of versatility. Z5 - The alkyl sulfate ions that constitute the compound are preferably those having an alkyl group with 1 to 3 carbon atoms, such as methyl sulfate ions. In the above formula (c2d), w represents the average degree of polymerization, preferably around 6 to 6000, and more preferably around 60 to 1200.
[0075] The molecular weight of component (C2d) is preferably between 1,000 and 1,000,000, and more preferably between 10,000 and 200,000. If the molecular weight of component (C2d) is within the above preferred range, a good antibacterial effect is more likely to be obtained. The term "molecular weight" here refers to the weight-average molecular weight, and the value is calculated by GPC (gel permeation chromatography) using THF (tetrahydrofuran) as the solvent, and then converted based on the calibration curve for PEG (polyethylene glycol). For the formulation of component (C2d), commercially available products such as Marcoat 100 (trade name, manufactured by Narco Corporation); PAS-H-1L, PAS-H-5L, and PAS-H-10L (all trade names, manufactured by Nitto Boseki Co., Ltd.) can be used.
[0076] (C2e) component: Polylysine or its salt. As the (C2e) component, any of α-poly-L-lysine, ε-poly-L-lysine, α-poly-D-lysine, or ε-poly-D-lysine can be used. Among these, α-poly-L-lysine and ε-poly-L-lysine are preferred from a safety standpoint, and ε-poly-L-lysine is more preferred. Of these, ε-poly-L-lysine, represented by the following general formula (c2e), is particularly preferred from a safety standpoint.
[0077] [ka]
[0078] [In equation (c²e), r is an integer between 5 and 100.]
[0079] In the above formula (c2e), r is an integer between 5 and 100, preferably between 10 and 50, and more preferably between 13 and 27.
[0080] ε-Poly-L-lysine is obtained by culturing microorganisms of the genus Streptomyces and is a polypeptide formed by the condensation of lysine, an essential amino acid for the human body. This polylysine is extremely safe because it is hydrolyzed by enzymes in the body back to its original component, L-lysine.
[0081] Polylysine can be used in either its free form or as an acid salt of an inorganic or organic acid. In the form of an acid salt, it is preferably a hydrochloride, gluconate, or acetate, and more preferably a hydrochloride. Furthermore, to facilitate handling, polylysine processed with excipients or fillers may be used.
[0082] (C2) Component may be used individually or in combination of two or more types. As for component (C2), at least one selected from the group consisting of components (C2a), (C2b), (C2c), (C2d), and (C2e) is preferred because it is easier to obtain the effects of this disclosure. Among these, at least one selected from the group consisting of components (C2a) and (C2c) is more preferred, and component (C2c) is particularly preferred.
[0083] [(C) Entire component] Component (C) preferably contains component (C1), and more preferably is component (C1). Component (C) preferably contains one or more selected from the group consisting of diclosan, triclosan, and isopropylmethylphenol as component (C1). In particular, it is preferable to contain diclosan.
[0084] Of the total mass of component (C) contained in the detergent composition, the sum of diclosan, triclosan, and isopropylmethylphenol is preferably more than 90% by mass, more preferably more than 93% by mass, even more preferably more than 95% by mass, and particularly preferably more than 98% by mass. It may also be 100% by mass. Furthermore, of the total mass of component (C) contained in the detergent composition, the proportion of dichrosan is preferably more than 90% by mass, more preferably more than 93% by mass, even more preferably more than 95% by mass, and particularly preferably more than 98% by mass. It may also be 100% by mass.
[0085] (C) The content of component is preferably 0.05 to 3% by mass, more preferably 0.1 to 2% by mass, and even more preferably 0.25 to 1% by mass, based on the total mass of the detergent composition. If the content of component (C) is above the preferred lower limit, the lingering fragrance will be further improved. If it is below the preferred upper limit, it is easier to avoid re-soiling due to component (C) attracting dirt.
[0086] The concentration of component (C) in the washing solution is preferably 0.1 to 2 ppm by mass, more preferably 0.3 to 2 ppm by mass, and even more preferably 0.5 to 2 ppm by mass. If the concentration of component (C) in the cleaning solution is above a preferred lower limit, the lingering fragrance will be further improved. If it is below a preferred upper limit, it is easier to avoid re-soiling caused by component (C) attracting dirt.
[0087] <(A) component to (C) component mixing ratio> In the detergent composition of this disclosure, the ratio of the content of component (B) to the content of component (A) is preferably 0.005 to 0.1, more preferably 0.0075 to 0.075, and even more preferably 0.01 to 0.05, expressed as a mass ratio of component (B) / component (A) (hereinafter also referred to as the "(B) / (A) ratio"). If the (B) / (A) ratio is above the lower limit of the preferred range described above, the residual fragrance is further improved. On the other hand, if the (B) / (A) ratio is below the upper limit of the preferred range described above, the cleaning power of the detergent composition is further improved.
[0088] In the detergent composition of this disclosure, the ratio of the content of component (C) to the content of component (A) is preferably 0.005 to 0.1, more preferably 0.0075 to 0.075, and even more preferably 0.01 to 0.05, expressed as a mass ratio of component (C) / component (A) (hereinafter also referred to as the "(C) / (A) ratio"). If the (C) / (A) ratio is above the lower limit of the preferred range described above, the residual fragrance is further improved. On the other hand, if the (C) / (A) ratio is below the upper limit of the preferred range described above, the cleaning power of the detergent composition is further improved.
[0089] <(D) component> (D) Component is water. (D) The component is not particularly limited and includes ion-exchanged water, distilled water, pure water, etc.
[0090] The content of component (D) is preferably 20% by mass or more, and more preferably 20 to 40% by mass, relative to the total mass of the detergent composition. If the content of component (D) is above the lower limit, the detergent composition disperses quickly in water. If the content of component (D) is below the upper limit, the surfactant content can be increased.
[0091] <Optional ingredients> The cleaning agent composition may contain other components (optional components) other than the components (A) to (D) described above, as long as they do not impair the effects of the present disclosure. Examples include surfactants other than component (A) (any surfactant), water-miscible solvents, viscosity reducers, pH adjusters, antibacterial agents (excluding component (C)), enzymes, enzyme stabilizers, metal ion scavengers, antioxidants, preservatives, texture enhancers, color transfer inhibitors, re-soiling inhibitors, pearlescent agents, soil release agents, hydrotropes, colorants, emulsifiers, fluorescent agents, extracts of natural products, etc.
[0092] [Optional surfactants] Examples of optional surfactants include nonionic surfactants, anionic surfactants, cationic surfactants, and amphoteric surfactants other than component (A).
[0093] Examples of nonionic surfactants other than component (A) include polyoxyethylene-type nonionic surfactants, alkylphenols, alkylene oxide adducts of fatty acids having 8 to 22 carbon atoms or amines having 8 to 22 carbon atoms, fatty acid alkanolamines, fatty acid alkanolamides, polyhydric alcohol fatty acid esters or their alkylene oxide adducts, polyhydric alcohol fatty acid ethers, alkyl (or alkenyl)amine oxides, alkylene oxide adducts of hydrogenated castor oil, sugar fatty acid esters, N-alkyl polyhydroxy fatty acid amides, alkyl glycosides, and the like.
[0094] Examples of anionic surfactants include non-soap-based anionic surfactants, higher fatty acids, or their salts. Examples of non-soap-based anionic surfactants include linear alkylbenzene sulfonic acid or its salts; α-olefin sulfonates; linear or branched alkyl sulfate ester salts; alkyl ether sulfate ester salts or alkenyl ether sulfate ester salts; alkane sulfonates having alkyl groups; and α-sulfo fatty acid ester salts.
[0095] Linear alkylbenzene sulfonic acid or its salt is preferably one in which the linear alkyl group has 8 to 16 carbon atoms, and more preferably one in which the linear alkyl group has 10 to 14 carbon atoms. As for α-olefin sulfonates, those with 10 to 20 carbon atoms are preferred. Alkyl sulfate esters with 10 to 20 carbon atoms are preferred. Preferably, the alkyl ether sulfate or alkenyl ether sulfate has a linear or branched alkyl or alkenyl group having 10 to 20 carbon atoms, to which an average of 1 to 10 moles of ethylene oxide is added (i.e., polyoxyethylene alkyl ether sulfate or polyoxyethylene alkenyl ether sulfate). The alkanesulfonate has 10 to 20 carbon atoms, preferably 14 to 17, and secondary alkanesulfonates are particularly preferred. As the α-sulfo fatty acid ester salt, those with 10 to 20 carbon atoms are preferred.
[0096] Examples of salts of non-soap-based anionic surfactants include alkali metal salts such as sodium salts and potassium salts, ammonium salts, monoethanolamine salts, diethanolamine salts, triethanolamine salts, alkanolamine salts such as 2-amino-2-methylpropanol salt and 2-amino-2-methylpropanediol.
[0097] Examples of higher fatty acids and their salts (so-called soaps) include fatty acids with 8 to 22 carbon atoms (higher fatty acids) or their salts (higher fatty acid salts). Examples of higher fatty acids include salts of single fatty acids such as caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, hydroxystearic acid, oleic acid, and behenic acid, as well as mixed fatty acids such as coconut oil fatty acids and beef tallow fatty acids. Examples of salts of these higher fatty acids include alkali metal salts such as sodium salts and potassium salts, ammonium salts, monoethanolamine salts, diethanolamine salts, triethanolamine salts, alkanolamine salts such as 2-amino-2-methylpropanol salt and 2-amino-2-methylpropanediol, and basic amino acid salts such as lysine and arginine.
[0098] Cationic surfactants include quaternary ammonium salts such as alkyltrimethylammonium salts, dialkyldimethylammonium salts, alkylbenzyldimethylammonium salts, and alkylpyridinium salts; long-chain aliphatic amide alkyl tertiary amines or salts thereof such as caprylic acid dimethylaminopropylamide, capric acid dimethylaminopropylamide, laurate dimethylaminopropylamide, myristate dimethylaminopropylamide, palmitate dimethylaminopropylamide, stearate dimethylaminopropylamide, behenate dimethylaminopropylamide, and oleate dimethylaminopropylamide; and palmitate diethanolaminopropylamide, stearate diethanolaminopropylamide, and the like.
[0099] Examples of amphoteric surfactants include alkylbetaine type, alkylamidebetaine type, imidazoline type, alkylaminosulfone type, alkylaminocarboxylic acid type, alkylamidecarboxylic acid type, amide amino acid type, and phosphate-type amphoteric surfactants. These optional surfactants may be used individually or in combination of two or more. They may be used individually or in combination of two or more.
[0100] (A) The total amount of component and optional surfactant (total surfactant amount) is preferably 10 to 50% by mass, and more preferably 20 to 40% by mass, relative to the total mass of the detergent composition. The content of component (A) relative to the total mass of the total amount of surfactants is preferably 50% by mass or more, more preferably 60% by mass or more, and may even be 100% by mass. From the viewpoint of cleaning power, it is preferable not to include any other surfactants.
[0101] [Metal ion scavenger] Examples of metal ion scavenging agents include malonic acid, succinic acid, malic acid, diglycolic acid, tartaric acid, and citric acid. The content of the metal ion scavenging agent is preferably, for example, 0.1 to 20% by mass relative to the total mass of the detergent composition.
[0102] [Antioxidant] Examples of antioxidants include butylhydroxytoluene, distyrenated cresol, sodium sulfite, and sodium bisulfite. The antioxidant content is preferably, for example, 0.01 to 2% by mass relative to the total mass of the detergent composition.
[0103] [Preservatives] Examples of preservatives include "Caisson® CG" (product name) from Dow Chemical, "Acticide MBS" (product name) from Soe Japan, and "NIPACIDE® BIT 20" (product name) from Clariant. The preservative content is preferably, for example, 0.001 to 1% by mass relative to the total mass of the cleaning agent composition.
[0104] [Coloring agent] Examples of colorants include general-purpose dyes and pigments such as Acid Red 138, Polar Red RLS, Acid Yellow 203, Acid Blue 9, Blue No. 1, Blue No. 205, Green No. 3, and Turquoise P-GR (all trade names). These colorants may be used individually or in combination of two or more. The colorant content is preferably 0.00005 to 0.005% by mass relative to the total mass of the detergent composition.
[0105] [Emulsifier] Examples of emulsifying agents include polystyrene emulsion and polyvinyl acetate emulsion, typically emulsions with a solid content of 30-50% by mass. Specifically, examples include polystyrene emulsion (manufactured by Saiden Chemical Co., Ltd., Saibinol® RPX-196 PE-3, solid content 40% by mass, trade name). These emulsifying agents may be used individually or in combination of two or more. The emulsifying agent content is preferably 0.01-0.5% by mass relative to the total mass of the detergent composition.
[0106] [extract] Extracts of natural products include Japanese pagoda tree, bearberry, echinacea, golden flower, phellodendron, coptis japonica, allspice, oregano, Japanese pagoda tree, chamomile, honeysuckle, Sophora flavescens, schizonepeta, jasmine, bay laurel, magnolia, burdock, comfrey, jasmine, burnet, peony, ginger, tall goldenrod, elderberry, sage, mistletoe, Atractylodes macrocephala, thyme, Anemarrhena asphodeloides, clove, Satsuma mandarin, tea tree, and barbecue. Examples of plants include Lee, Houttuynia cordata, Nandina domestica, Frankincense, Armillaria japonica, White sedge, Saposhnikovia divaricata, Watercress, Hops, Rosehip, Mountain grape, Purple sedge, European mint, Belamcanda chinensis, Japanese perilla, Eucalyptus, Lavender, Rose, Rosemary, Balan, Japanese cedar, Gilead balsam, White cinquefoil, Kochia cypress, Willow, Gentian, Sweetgum, Adenophora triphylla, Japanese water chestnut, Japanese knotweed, Licorice, and St. John's wort. The extract content is preferably, for example, 0 to 0.5% by mass relative to the total mass of the cleansing composition.
[0107] [Water-miscible organic solvent] A water-miscible organic solvent is an organic solvent that dissolves in 25g or more of water at 25°C in 1L of water. Examples of water-miscible organic solvents include alcohols such as ethanol, glycerin, 1-propanol, 2-propanol, 1-butanol, and 3-methoxy-3-methyl-1-butanol (Solfit®, manufactured by Kuraray Co., Ltd.); glycols such as propylene glycol (PG), butylene glycol, and hexylene glycol; polyglycols such as diethylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol with a molecular weight of approximately 200 to 1,000, and dipropylene glycol; and alkyl ethers such as diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether (butyl carbitol), and diethylene glycol dimethyl ether. The content of the water-miscible organic solvent is preferably 1 to 10% by mass relative to the total mass of the detergent composition.
[0108] [pH adjuster] Examples of pH adjusting agents include alkanolamines such as monoethanolamine, diethanolamine, and triethanolamine; alkali metal hydroxides such as sodium hydroxide and potassium hydroxide; basic amino acids such as arginine and lysine; ammonia; sodium carbonate; and acidulants such as sulfuric acid, hydrochloric acid, phosphoric acid, and citric acid. Among these, alkanolamines, sodium hydroxide, potassium hydroxide, and sodium carbonate are preferred. pH adjusters may be used individually or in combination of two or more types. The amount of pH adjuster added should be appropriately set to the amount necessary to adjust the detergent composition to the desired pH. Furthermore, the total amount of components (A) to (D) and any optional components shall not exceed 100% by mass.
[0109] <Physical properties> The pH of the cleansing agent composition is preferably 4 to 10 at 25°C, more preferably 5 to 9, and even more preferably 6 to 8. If the pH is within the above preferred range, skin irritation can be reduced. pH is a value measured using a pH meter (product name: HM-30G, manufactured by Toa DKK Co., Ltd.).
[0110] The viscosity of the detergent composition at 25°C, as measured with a B-type viscometer, is preferably 10 to 1,000 mPa·s, and more preferably 10 to 500 mPa·s. A viscosity within this range ensures good handling. Viscosity was measured using a Brookfield viscometer (Type B viscometer) with the rotor speed set to 60 rpm, after 60 seconds.
[0111] <Manufacturing method> The detergent composition of this disclosure can be manufactured in accordance with conventionally known methods for manufacturing detergent compositions. For example, the detergent composition can be manufactured by dissolving component (A), component (B), component (C), and optionally an optional component in part of component (D), adjusting the pH with a pH adjuster as needed, and then adding the remaining component (D).
[0112] (Washing Instructions) Methods of using the detergent composition (i.e., washing methods) include, for example, putting the detergent composition into the detergent composition dispenser of a washing machine and then operating the washing machine; adding the detergent composition to the water together with the items to be washed during washing; immersing the items to be washed in a detergent solution prepared by dissolving the detergent composition in water beforehand; and applying the detergent composition directly to the items to be washed, leaving it for, for example, 3 minutes to 24 hours, and then performing a normal wash.
[0113] Furthermore, it is preferable to use a washing machine equipped with an automatic detergent dispenser, which has been put into practical use in recent years. The automatic detergent dispenser is a device that automatically dispenses the detergent composition from a tank containing the detergent composition into the washing tub via a filter for removing debris located at the bottom of the tank and a dispensing pipe. A measuring means such as a syringe pump is provided in the middle of the dispensing pipe, allowing a fixed amount set according to the amount of laundry, etc., to be transferred from the tank to the washing tub. Using an automatic detergent dispenser not only eliminates the hassle of measuring, but also prevents detergent from getting on your hands or spilling and staining the washing machine or surrounding area during the measuring process.
[0114] Furthermore, it is preferable to use an automatic dispenser that can automatically dispense a predetermined amount of liquid. Using an automatic dispenser is also preferable because it allows for accurate measurement of even small amounts of the cleaning agent composition, making it easier to achieve sufficient cleaning power and avoiding waste due to overuse. Some automatic dispensers utilize infrared sensors or similar technologies to dispense automatically without requiring the user to touch any switches. Using such an automatic dispenser allows users to measure out the cleaning agent composition simply by holding a container in one hand, significantly reducing the burden on the user.
[0115] When using an automatic dispenser, it is also preferable to receive the detergent composition dispensed into a flexible container and then place that flexible container directly into the washing machine. This ensures that the entire amount of the dispensed detergent composition is reliably dissolved in the washing solution. Examples of materials for flexible containers that can be directly put into a washing machine include silicone resin, polyvinyl chloride, elastomer, flexible polyester, flexible polypropylene, and polyurethane.
[0116] The washing method using the detergent composition of this disclosure is suitable as a method for washing textile products, and more suitable as a method for washing clothing. Examples of textile products include clothing, dishcloths, towels, sheets, curtains, and other textile products. The material of the textile product is not particularly limited and may be any of the following: natural fibers such as cotton, silk, and wool, or synthetic fibers such as polyester and polyamide.
[0117] When diluting a detergent composition with water to make a cleaning solution, it is preferable to dilute it, for example, 5,000 to 6,000 times (by volume). The water ratio per item being washed (mass of washing solution / mass of items being washed) is preferably 5 or higher for drum-type washing machines and 10 or higher for top-loading washing machines.
[0118] (Effects and Benefits) As shown in this disclosure, by using a specific nonionic surfactant obtained by adding both ethylene oxide and propylene oxide to hydrocarbon groups with a high proportion of 14 carbon atoms, and a specific antimicrobial agent in combination with a fragrance composition, it is possible to achieve both good cleaning power and lingering fragrance. The reason is presumed to be as follows:
[0119] (A) By using a surfactant with 14 carbon atoms as component (A), the CMC (critical micelle concentration) is reduced compared to surfactants with hydrocarbon groups with 12 carbon atoms, which is thought to enhance cleaning power at low concentrations. Furthermore, by adding both ethylene oxide and propylene oxide as component (A), the hydrophilic and hydrophobic components contained in the fragrance (component (B)) bind to the ethylene oxide chain and propylene oxide chain, respectively, and are attracted to the item being washed, thus enhancing the lingering fragrance. In addition, the antibacterial agent (component (C)) remains on the item being washed, making the surface relatively hydrophobic, and is thought to combine with the attracted (component (B)) to enhance the lingering fragrance. [Examples]
[0120] The present disclosure will be described in detail below with reference to examples, but the present disclosure is not limited to the following statements.
[0121] <Raw materials used> [(A) component] • Emarumin: Manufactured by Sanyo Chemical Industries, Ltd., product name "Emarumin (registered trademark) CS-100W". A compound obtained by randomly adding 15 moles of ethylene oxide and 1.7 moles of propylene oxide to an alcohol having a linear alkyl group with 14 carbon atoms. ·C14 15EO3PO): A PO-terminated compound obtained by adding 15 moles of ethylene oxide to an alcohol having a linear alkyl group with 14 carbon atoms, followed by the addition of 3 moles of propylene oxide.
[0122] [(A') Component, optional surfactant] C124 15EO3PO: A PO-terminated compound produced by adding 15 moles of ethylene oxide to 1 mole of a primary alcohol (mass ratio of C12 alcohol to C14 alcohol = 7 / 3), followed by the addition of 3 moles of propylene oxide. Manufactured by Lion Chemical Co., Ltd. • C14 15EO: A compound obtained by adding 15 moles of ethylene oxide to 1 mole of a primary alcohol (100% C14 alcohol). LMAO: A primary alcohol (mass ratio of C12 alcohol to C14 alcohol = 7 / 3) to which 15 moles of ethylene oxide are added. LMAO-90 (trade name), manufactured by Lion Corporation. • LAS: Linear alkylbenzene sulfonic acid, Lypon® LH-200 (trade name), 10-14 carbon atoms, average molecular weight 322, manufactured by Lion Specialty Chemicals. AES(1EO): Polyoxyalkylene alkyl ether sulfate. A mixture of polyoxyethylene lauryl ether sodium sulfate and polyoxyethylene myristyl ether sodium sulfate, with an average number of moles of EO added of 1.
[0123] [(B) Component] Fragrance compositions B-1, B-2, and B-3 were prepared using the formulations shown in Table 1.
[0124] [Table 1]
[0125] [Component (C)] · Dichlorosan: TINOSAN HP100 (trade name), manufactured by BASF. · C12 monoalkyl cation: dodecyltrimethylammonium chloride, Arquad 12-37W (trade name), manufactured by Lion Specialty Chemicals. In formula (c2a-1), R 21 is an alkyl group having 12 carbon atoms, R 22 ~R 24 is a methyl group, and Z1 - is a chloride ion.
[0126] [Component (D)] · Water: Purified water.
[0127] [Common components] · Coconut fatty acid: Coconut fatty acid (PKO) TC (trade name), manufactured by NOF Corporation... 1% by mass. · Enzyme: Coronase (registered trademark) Evity48L (trade name), manufactured by Novozymes... 1% by mass. · Citric acid: Liquid citric acid (trade name), manufactured by Itoh Oil Industries Co., Ltd... 0.1% by mass. · Sodium benzoate: Sodium benzoate, 35% aqueous solution (trade name), manufactured by Lion Specialty Chemicals... 1% by mass. · Sodium hydroxide: Sodium hydroxide (trade name), manufactured by Toagosei Co., Ltd... 0.4% by mass.
[0128] [Evaluation method] [Residual fragrance property] As an unperfumed model detergent, a detergent composition having the following composition was used. · Nonionic surfactant (a mixture of alcohol having 12 carbon atoms (C12OH) and alcohol having 14 carbon atoms (C14OH) (mass ratio C12OH / C14OH = 75 / 25) to which an average of 12 moles of ethylene oxide is added) 10% by mass. · Citric acid 0.2% by mass. · Sodium hydroxide The necessary amount for adjusting to pH 7.0. · Purified water Balance.
[0129] A fully automatic washing machine (Haier, product name JW-Z23A) (water volume set to 12L) was filled with 2.4g of detergent composition (unscented model detergent or the detergent composition of each example), and then a cotton shirt (BVD, 100% cotton) was added to achieve a bath ratio of 20:1. The machine was then washed using the standard course of the fully automatic washing machine. After washing the cotton shirts as described above and air-drying them at room temperature (25°C) for 24 hours, ten expert panelists evaluated the scent remaining on the shirts through sensory perception.
[0130] Each expert panelist used a cotton shirt washed with only the aforementioned unscented model detergent as a standard sample, and scored the results of the comparison with this standard sample according to the evaluation criteria below. Then, using the average value of 10 expert panelists as an indicator, the residual fragrance properties of textile products were evaluated according to the following criteria. A result of ◎ or ○ was considered a pass.
[0131] Evaluation Criteria 3 points: The scent of the cleaning agent composition can be clearly detected. 2 points: It can detect the scent of the cleaning agent composition. 1 point: It can be perceived as having a different scent from the standard product (but it is not possible to tell that it is the scent of the detergent composition). 0 points: Same scent as the standard product.
[0132] Judgment criteria ◎: 2 points or more. ○: 1.5 points or more, but less than 2 points. △: 1 point or more, but less than 1.5 points. ×: Less than 1 point.
[0133] [Cleaning power] Wet-process artificial soiling cloth (manufactured by Soritsu Co., Ltd.) was cut into 5cm x 5cm pieces and used as the soiling cloth. A Terg-O-tometer (manufactured by UNITED STATES TESTING) was used as the cleaning test device. As the washing solution, 0.18 g (0.3 g in Example 8 and Comparative Example 2) of the washing agent composition for each example was added to 900 mL of water (25°C, 5°DH), and the mixture was stirred for 30 seconds to prepare the solution.
[0134] The cleaning solution, 10 of the aforementioned soiled cloths, and a charge cloth (cotton knit fabric cut into small pieces, thoroughly washed, rinsed, and dried) were placed in a cleaning test machine. The machine was set to a bath ratio of 20 and washed at 120 rpm and 25°C for 10 minutes. Afterwards, the cloths were transferred to a twin-tub washing machine (Mitsubishi Electric, product name "CW-C30A1-H1"), spun dry for 1 minute, rinsed in 30L of water (25°C, 5°DH) for 3 minutes, and air-dried.
[0135] The reflectance of unstained cloth and soiled cloth before and after washing was measured using a colorimeter (manufactured by Nippon Denshoku Industries Co., Ltd., product name "SE7700"), and the washing rate (%) was calculated using the following formula (i). Cleaning rate (%) = (K / S of soiled cloth before cleaning - K / S of soiled cloth after cleaning) / (K / S of soiled cloth before cleaning - K / S of unsoiled cloth) × 100 ... (i) [In formula (i), K / S=(1-R / 100) 2 (2R / 100). R is reflectance (%).
[0136] For 10 soiled cloths, the cleaning rate (%) was calculated, and the average value was determined. This average cleaning rate (%) was used as an indicator to evaluate according to the following criteria. "◎" and "○" were considered passing grades. Judgment criteria ◎: The average cleaning rate is 60% or higher. ○: The average cleaning rate is between 50% and 60%. △: The average cleaning rate is between 40% and 50%. ×: The average cleaning rate is less than 40%.
[0137] <Examples, Comparative Examples> Each detergent composition for each example was prepared by adding each component to component (D) and mixing them according to the formulations shown in Tables 2-4. The ingredient amounts in the table are calculated on a pure content basis. Ingredients whose amounts are not listed in the table are not included. In the table, the "balance" of component (D) represents the amount required to make the entire detergent composition 100% by mass. The table shows the results of evaluating the residual fragrance and cleaning power of each example of the detergent composition.
[0138] [Table 2]
[0139] [Table 3]
[0140] [Table 4]
[0141] As shown in Tables 2 and 3, Examples 1 to 15 all received a rating of "◎" or "○" for both residual fragrance and cleaning power. In contrast, as shown in Table 4, Comparative Example 1, which used component (A') with a higher proportion of C12 hydrocarbon groups than C14 hydrocarbon groups instead of component A), received a "△" rating for cleaning power. Comparative Example 2, which used component (A') in which only ethylene oxide was added to alcohol and no propylene oxide was added, instead of component (A), received a "△" rating for residual fragrance.
[0142] (B) Comparison 3, which lacked component (B), received a "×" result in the assessment of residual fragrance. (C) Comparison 4, which lacked component C, received a "△" rating for residual fragrance. Based on the above results, it has been confirmed that applying this disclosure makes it possible to achieve both good cleaning power and lingering fragrance.
Claims
1. (A) Components: A nonionic surfactant represented by the following formula (a1), 2 １ --[(5O) ｓ / (O) ｔ ・・・(11) [In formula (a1), R １ is a hydrocarbon group having 12 to 18 carbon atoms, EO is an oxyethylene group, s is a number from 12 to 25 indicating the average number of repeats of EO, PO is an oxypropylene group, and t is a number from 1 to 5 indicating the average number of repeats of PO. EO and PO may be added randomly or in a block manner. However, R １ In this case, a hydrocarbon group with 14 carbon atoms is R １ It is 50% or more of the total mass. (B) Ingredients: Fragrance composition and (C) Components: One or more antibacterial agents selected from the group consisting of phenolic antibacterial agents (C1) and cationic antibacterial agents (C2), (D) Ingredients: Water and A detergent composition containing the following:
2. The detergent composition according to claim 1, wherein the (C) component is a phenolic antibacterial agent (C1).
3. The detergent composition according to claim 1 or 2, wherein the (B) component comprises a fragrance component (B1) having a logP value of less than 3, and the ratio of the fragrance component (B1) to the total mass of the (B) component is 15% by mass or more.
4. A laundry method comprising washing clothes using a cleaning solution obtained by diluting the cleaning agent composition according to claim 1 or 2, wherein the concentration of component (A) in the cleaning solution is 30 to 150 ppm by mass.