Liquid detergent composition for tableware

Abstract

To provide a liquid detergent composition for tableware that allows users to feel favorable tactile sensation on the hands after dishwashing (such as absence of residue, dryness and tightness), and that can achieve both detergency against oily stains and absence of sliminess after dishwashing.SOLUTION: A liquid detergent composition for tableware comprises: a component (A1) being a sulfonate-type and / or sulfate ester salt-type anionic surfactant; a component (A2) being a fatty acid salt-type anionic surfactant; a component (B) being an amine oxide-type surfactant; and a component (C) being a cationic polymer including cationized cellulose and / or a repeating unit derived from dimethyldiallylammonium chloride, where the total content represented by [component (A1)+component (A2)] is 1-30 mass% relative to the total mass of the liquid detergent composition, and the mass ratio represented by [component (A2)] / [component (C)] is 0.2-100.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a liquid detergent composition for tableware.

Background Art

[0002] Conventionally, a detergent for hand-washing tableware has been required to have strong detergency for removing oil stains, while mildness to the skin of the hands has also been required as an important performance. As factors leading to mildness to the skin of the hands, there are a "retention feeling" in which the base agent is felt to stay on and be protected on the surface of the skin of the hands, the "absence of tightness" of the skin of the hands after washing tableware, and the "absence of stickiness (dry feeling)", and it is desired to be able to actually feel these.

[0003] Patent Document 1 discloses a composition excellent in detergency, foaming property, water drainage property, and low-temperature stability by combining a specific anionic surfactant, an amphoteric or semi-polar surfactant, and cationized cellulose.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, the composition of Cited Document 1 does not allow one to actually feel the "retention feeling" or the "absence of stickiness (dry feeling)", and also has a problem that a slimy feeling is likely to be felt when rinsing the hands. Therefore, an object of the present invention is to provide a liquid detergent composition for tableware that can allow one to actually feel the tactile sensation of the skin of the hands after washing tableware (retention feeling, absence of stickiness (dry feeling), absence of tightness), and can achieve both detergency against oil stains and the absence of a slimy feeling after washing tableware.

Means for Solving the Problems

[0006] The present invention has the following aspects. <1> (Component (A1)): At least one anionic surfactant selected from the group consisting of sulfonate-type anionic surfactants and sulfate ester salt-type anionic surfactants, and (Component (A2)): A fatty acid salt-type anionic surfactant, and (Component (B)): An amine oxide-type surfactant, and (Component (C)): At least one cationic polymer selected from the group consisting of cationized cellulose and a cationic polymer containing a repeating unit derived from dimethyldiallylammonium chloride, and With respect to the total mass of the liquid detergent composition, the total content represented by [(Component (A1)) + (Component (A2))] is 1 to 30% by mass, A liquid detergent composition for tableware, wherein the mass ratio represented by (Component (A2)) / (Component (C)) is 0.2 to 100. <2> A liquid detergent composition for tableware, wherein the component (C) contains cationized cellulose. <3> The liquid detergent composition for tableware according to <1> or <2>, wherein the mass ratio represented by [(Component (A1)) + (Component (A2))] / (Component (B)) is 0.8 to 3. [Advantages of the Invention]

[0007] According to the liquid detergent composition for tableware of the present invention, it is possible to experience the feeling of the skin of the hands after washing tableware (no lingering feeling, no bulkiness (dry feeling), no squeak (tightness)), and it is possible to achieve both the detergency against oil stains and the lack of stickiness after washing tableware. [Embodiments for Carrying Out the Invention]

[0008] (Liquid detergent composition for tableware) The liquid detergent composition for tableware of the present invention (hereinafter, also simply referred to as "liquid detergent composition") contains a component (A1), a component (A2), a component (B), and a component (C).

[0009] <(Component (A1))> (Component (A1) is at least one anionic surfactant selected from the group consisting of sulfonate-type anionic surfactants and sulfate ester-type anionic surfactants. By containing component (A1), the liquid detergent composition can provide a hand feel after dishwashing (retention feeling, lack of squeakiness), and can achieve both detergency against oil stains and lack of stickiness after dishwashing.)

[0010] Examples of component (A1) include polyoxyalkylene alkyl ether sulfates or their salts, alkane sulfonic acids having an alkyl group or their salts, linear alkylbenzene sulfonic acids or their salts, and olefin sulfonic acids or their salts. Polyoxyalkylene alkyl ether sulfates or their salts, alkane sulfonic acids having an alkyl group or their salts, and olefin sulfonic acids or their salts are preferred.)

[0011] Examples of the polyoxyalkylene alkyl ether sulfate or its salt include compounds represented by the following general formula (a1). R 1 -O-(EO) p -SO3 - M + ···(a1) (In the general formula (a1), R 1 is a linear alkyl group having 8 to 18 carbon atoms, and the carbon atom bonded to the oxygen atom is a primary carbon atom. EO is an oxyethylene group, p represents the average number of moles of EO added, and 0 < p ≤ 4. M + is a cation other than a hydrogen ion.)

[0012] M + Examples of M include, for example, alkali metal ions, alkaline earth metal ions, ammonium ions, protonated ethanolamines, etc. Examples of alkali metal ions include sodium ions, potassium ions, etc. Examples of alkaline earth metal ions include calcium ions, magnesium ions, etc. Examples of protonated ethanolamines include alkanolamine salts such as diethanolammonium and triethanolamine. Note that M+ When it is a divalent or higher cation, M + The number of is the number multiplied by 1 / valence number and combined with -SO3 - shall be assumed. For example, M + When it is a magnesium ion, M + The number of is 1 / 2. M + As M, an alkali metal ion is preferable, and a sodium ion or a potassium ion is more preferable.

[0013] R 1 The number of carbon atoms of is preferably 10 to 14, more preferably 12 to 14. Also, R 1 is preferably an alkyl group derived from an oil and fat raw material. A particularly preferable (A1) component is sodium polyoxyethylene (1) linear alkyl (C12 / 14 = 75 / 25; derived from natural oil and fat) sulfate. The numerical value in () following "polyoxyethylene" is the average number of repeating units of oxyethylene groups (i.e., the average number of moles of ethylene oxide added). Also, the number after "C" such as "C12" is the number of carbon atoms.

[0014] Examples of the alkane sulfonic acid or its salt having an alkyl group include alkane sulfonic acids or their salts having 10 to 20 carbon atoms, preferably alkane sulfonic acids or their salts having 14 to 17 carbon atoms, and particularly preferably secondary alkane sulfonic acids (SAS) or their salts having 14 to 17 carbon atoms. Examples of the SAS salt include sodium salts.

[0015] Examples of the olefin sulfonic acid or its salt include α-olefin sulfonic acid or its salt, and internal olefin sulfonic acid or its salt. α-olefin sulfonic acid is an olefin sulfonic acid in which the carbon-carbon double bond is at the 1-position (α-position). The number of carbon atoms is preferably 10 to 20, more preferably 10 to 16. Internal olefin sulfonic acid is an olefin sulfonic acid having a carbon-carbon double bond at a position other than the α-position. The number of carbon atoms of the olefin sulfonic acid is preferably 16 to 24, more preferably 16 to 18.

[0016] As the linear alkylbenzene sulfonic acid (LAS) salt, a linear alkylbenzene sulfonic acid having 8 to 16 carbon atoms in the linear alkyl group or a salt thereof is preferable, and a linear alkylbenzene sulfonic acid having 10 to 14 carbon atoms in the linear alkyl group or a salt thereof is particularly preferable. Examples of the LAS salt include sodium salt, potassium salt and the like.

[0017] These components (A1) may be used alone or in combination of two or more.

[0018] The content of the component (A1) is preferably 1 to 20% by mass, more preferably 1 to 15% by mass, and still more preferably 5 to 10% by mass based on the total mass of the liquid detergent composition. When the content of the component (A1) is within the above range, the detergency for oily stains and the feeling of retention can be improved, and the squeaking and dullness can be favorably suppressed.

[0019] <Component (A2)> The component (A2) is a fatty acid salt type anionic surfactant. By containing the component (A2), the tactile sensation of the hands after washing dishes (feeling of retention, lack of squeaking (tightness)) can be realized. As the component (A2), a fatty acid salt type anionic surfactant having 8 to 24 carbon atoms, preferably 10 to 20 carbon atoms, more preferably 10 to 18 carbon atoms is preferable. Examples of the fatty acid salt type anionic surfactant include compounds represented by the following general formula (a2). R 2 -(AO) p -COO - M + ···(a2) (In the general formula (a2), R 2 is an aliphatic hydrocarbon group having 8 to 18 carbon atoms, AO is an oxyalkylene group having 2 to 4 carbon atoms. p represents the average addition mole number. M + is a cation other than a hydrogen ion.)

[0020] R 2 preferably has 7 to 23 carbon atoms, more preferably 8 to 22 carbon atoms, and still more preferably 9 to 21 carbon atoms. R 2is preferably an aliphatic hydrocarbon group derived from a plant raw material, more preferably an alkyl group or an alkenyl group. p = 0 to 4 is preferred, and p = 0 is more preferred. M + Examples thereof are the same as those described above.

[0021] When p is 0, as the fatty acid or its salt, a fatty acid having 8 to 24 carbon atoms, preferably 10 to 20 carbon atoms, more preferably 10 to 18 carbon atoms or its salt is preferred. Examples of the fatty acid having 8 to 24 carbon atoms or its salt include single fatty acids such as caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, hydroxystearic acid, oleic acid, linoleic acid, behenic acid or their salts; mixed fatty acids such as coconut fatty acid and beef tallow fatty acid or their salts. As the fatty acid having 8 to 24 carbon atoms, lauric acid, myristic acid, palmitic acid, and coconut fatty acid are preferred, and coconut fatty acid is more preferred. Examples of the form of the salt of the fatty acid having 8 to 24 carbon atoms include alkali metal salts (such as sodium salts and potassium salts), alkaline earth metal salts (such as magnesium salts and calcium salts), ammonium salts, and alkanolamine salts (such as monoethanolamine salts and diethanolamine salts).

[0022] When p is 1 or more, as the polyoxyalkylene ether carboxylic acid or its salt, a polyoxyethylene alkyl ether carboxylate or a polyoxyethylene alkenyl ether carboxylate having a linear or branched alkyl group or alkenyl group having 10 to 20 carbon atoms and an average of 1 to 10 moles of ethylene oxide added is preferred. Examples of the form of the salt of the polyoxyalkylene ether carboxylic acid are the same as those of the form of the salt of the fatty acid having 8 to 24 carbon atoms.

[0023] These (A2) components may be used alone or in combination of two or more.

[0024] The content of the (A2) component is preferably 0.1 to 15% by mass, more preferably 0.5 to 3% by mass, and still more preferably 1 to 2% by mass with respect to the total mass of the liquid detergent composition. When the content of the (A2) component is within the above range, the feeling of stickiness can be improved, the squeaking can be well suppressed, and the liquid stability is good.

[0025] The total content of the (A1) component and the (A2) component (hereinafter, also referred to as "[(A1) component + (A2) component]") is 1 to 30% by mass, preferably 3 to 25% by mass, and more preferably 6.5 to 12% by mass with respect to the total mass of the liquid detergent composition. When [(A1) component + (A2) component] is within the above range, the detergency for oily stains can be improved, and the squeaking, the feeling of slipperiness, and the feeling of bulkiness can be well suppressed.

[0026] <(B) component> The (B) component is an amine oxide type semi-polar surfactant. By containing the (B) component, the detergency for oily stains, which is necessary as the basic performance of the kitchen detergent, and the inhibitory effect on the feeling of slipperiness are enhanced due to the synergistic effect of the (A1) component, the (A2) component, and the (B) component. Examples of the amine oxide type surfactant include alkylamine oxide type and alkylamidoalkylamine oxide type.

[0027] Examples of the (b1) component include compounds represented by the following general formula (b1).

[0028]

Chemical formula

[0029] In the general formula (b1), R 21 is a linear or branched alkyl group having 8 to 18 carbon atoms, or a linear or branched alkenyl group having 8 to 18 carbon atoms, and R 22 and R 23 are each independently an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group having 1 to 3 carbon atoms, and R 24is an alkylene group having 1 to 4 carbon atoms. A is -CONH-, -NHCO-, -COO-, -OCO- or -O-, and r is a number of 0 or 1.

[0030] As the alkylamine oxide type semi-polar surfactant, an alkyldimethylamine oxide having an alkyl group with 8 to 18 carbon atoms is preferable, and an alkyldimethylamine oxide having an alkyl group with 12 to 14 carbon atoms is more preferable. Examples of the alkylamine oxide type semi-polar surfactant include lauryldimethylamine oxide, myristyldimethylamine oxide, coconut oil dimethylamine oxide, and the like. Among these (b1) components, an alkylamine oxide type semi-polar surfactant is preferable, lauryldimethylamine oxide, myristyldimethylamine oxide, and coconut oil dimethylamine oxide are more preferable, and lauryldimethylamine oxide is even more preferable.

[0031] These (B) components may be used alone or in combination of two or more.

[0032] The content of the (B) component is preferably 2 to 20% by mass, more preferably 2.5 to 15% by mass, and even more preferably 5 to 12% by mass based on the total mass of the liquid detergent composition. If the content of the (B) component is within the above range, the detergency for oil stains can be improved and the occurrence of streaks can be well suppressed.

[0033] The mass ratio represented by [(A1) component + (A2) component] / (B) component (hereinafter, also referred to as "(A1 + A2) / B ratio") is preferably 0.8 to 3, more preferably 0.8 to 2, and even more preferably 0.9 to 1.4. If the (A1 + A2) / B ratio is within the above range, it is easy to achieve both improvement of the detergency for oil stains and suppression of streaks, and the liquid stability is good.

[0034] The total content of the (A1) component, (A2) component, and (B) component is preferably 10 to 35% by mass, more preferably 13 to 30% by mass, and even more preferably 15 to 25% by mass based on the total mass of the liquid detergent composition.

[0035] The total content of the (A1) component, (A2) component, and (B) component is preferably 50 to 100% by mass, more preferably 70 to 100% by mass, and even more preferably 75 to 100% by mass based on the total mass of the surfactants in the liquid detergent composition.

[0036] <(C) component> The (C) component is at least one cationic polymer selected from the group consisting of cationized cellulose and cationic polymers containing repeating units derived from dimethyldiallylammonium chloride. By containing the (C) component, the feeling of stickiness can be enhanced and the slimy feeling can be suppressed. A cationic polymer is a polymer having a cationization degree of 0.1% by mass or more and a molecular weight of 10,000 or more. Hereinafter, dimethyldiallylammonium chloride is also referred to as "DADMAC".

[0037] Examples of the (C) component include cationized cellulose; polymers containing repeating units derived from dimethyldiallylammonium chloride (hereinafter also referred to as "DADMAC polymers"), cationized guar gum, cationized starch, etc. Among them, cationized cellulose and DADMAC polymers are preferred. Cationized cellulose is more preferred.

[0038] As the cationized cellulose, a compound containing a repeating unit represented by the following general formula (c1) is preferred. Among them, a compound containing a repeating unit represented by the following general formula (c2) ((c2) component), a compound containing a repeating unit represented by the following general formula (c3) ((c3) component), a compound containing a repeating unit represented by the following general formula (c4) ((c4) component), a compound containing a repeating unit represented by the following general formula (c5) ((c5) component), a compound containing a repeating unit represented by the following general formula (c6) ((c6) component), a compound containing a repeating unit represented by the following general formula (c7) ((c7) component), etc. are more preferred. As these cationized celluloses, cation-modified hydroxyethyl celluloses such as O-[2-hydroxy-3-(trimethylammonio)propyl] hydroxyethyl cellulose chloride, hydroxyethyl cellulose diallyldimethylammonium chloride polymer (copolymer of hydroxyethyl cellulose and diallyldimethylammonium chloride), etc. can be mentioned. Among these, from the viewpoint of the balance between the sense of retention and the suppression of stickiness, a compound represented by the following general formula (c1) is preferred. In the following formula, the chloride ion may be replaced with other anions (for example, halide ions such as fluoride ion, bromide ion, iodide ion, trifluoroacetate ion, pentafluorobenzoate ion, alkylsulfonate ion, benzenesulfonate ion, etc.).

[0039]

Chemical formula

[0040]

Chemical formula

[0041]

Chemical formula

[0042]

Chemical formula

[0043] [Chemistry]

[0044] [Chemistry]

[0045] [Chemistry]

[0046] In the general formula (c1), R c1 , R c2 , and R c3 are each independently a hydrogen atom, -C2H4OH, or -(C2H4) m (CH2CH(OH)CH2N + (CH3)3Cl - ) n represented group, provided that R c1 , R c2 , and R c3 at least one of is -(C2H4) m (CH2CH(OH)CH2N + (CH3)3Cl - ) n and 、 m, n are each independently a number representing the number of repeating units in (). In the general formula (c2), R c1 , R c2 , and R c3 are each independently a hydrogen atom, -C2H4OH, or -(C2H4) m (CH2CH(OH)CH2N + (CH3)3Cl - ) n represented group, provided that R c1 , R c2 , and R c3 at least one of is -(C2H4) m (CH2CH(OH)CH2N + (CH3)3Cl - ) nand at least one hydroxyl group forms an ether bond by a polymerization reaction, m and n are each independently a number representing the number of repeating units in (), and q and r are numbers representing the number of repeating units in []. In general formula (c3), R c2 , and R c3 are each independently a hydrogen atom, -C2H4OH, or -(C2H4) m (CH2CH(OH)CH2N + (CH3)3Cl - ) n represented group, and m and n are each independently a number representing the number of repeating units in (). In general formula (c4), w, x, v, and y are numbers representing the number of repeating units in (). In general formula (c5), R c1 , and R c2 are each independently -C2H4OH, or -(C2H4) m (CH2CH(OH)CH2N + (CH3)3Cl - ) n represented group, provided that at least one of R c1 , and R c2 is -(C2H4) m (CH2CH(OH)CH2N + (CH3)3Cl - ) n and 、 m and n are each independently a number representing the number of repeating units in (). In general formula (c6), R c1 , and R c3 are each independently -C2H4OH, -(C2H4) m (CH2CH(OH)CH2N + (CH3)3Cl - ) n represented group, provided that at least one of R c1 , and R c3 is -(C2H4) m (CH2CH(OH)CH2N + (CH3)3Cl - ) n and、 m and n each independently represent the number of repetitions of the repeating unit within (). In general formula (c7), R c1 , R c2 , and R c3 each independently represent a group represented by -C2H4OH or -(C2H4) m (CH2CH(OH)CH2N + (CH3)3Cl - ) n , provided that at least one of R c1 , R c2 , and R c3 is -(C2H4) m (CH2CH(OH)CH2N + (CH3)3Cl - ) n and 、 m and n each independently represent the number of repetitions of the repeating unit within ().

[0047] The mass average molecular weight of the (c1) component is from 10,000 to several million. The mass average molecular weight of the (c2) component is from 10,000 to several hundred thousand. The mass average molecular weight of the (c3) component is from 10,000 to several hundred thousand. The mass average molecular weight of the (c4) component is from 10,000 to several million. The mass average molecular weight of the (c5) component is from 10,000 to several million. The mass average molecular weight of the (c6) component is from 10,000 to several million. The mass average molecular weight of the (c7) component is from 10,000 to several million.

[0048] Examples of cationized cellulose include products with the trade names "Leo Guard GP (cationization degree: 1.8% by mass, manufactured by Lion Specialty Chemicals Co., Ltd.)", "Leo Guard MGP (cationization degree: 1.8% by mass, manufactured by Lion Specialty Chemicals Co., Ltd.)", "Leo Guard MLP (cationization degree: 0.6% by mass, manufactured by Lion Specialty Chemicals Co., Ltd.)", "UCARE (registered trademark) JR125 (cationization degree: 1.9% by mass, manufactured by Dow Chemical Company)", "UCARE JR400 (cationization degree: 1.9% by mass, manufactured by Dow Chemical Company)", "UCARE LR30M (cationization degree: 1.0% by mass, manufactured by Dow Chemical Company)", etc. Among these, from the perspective of the retention performance, "UCARE JR125" and "UCARE JR400" are preferred, and "UCARE JR125" is more preferred.

[0049] Examples of DADMAC polymers include homopolymers of DADMAC (DADMAC homopolymers), DADMAC-acrylamide copolymers, acrylic acid-DADMAC-acrylamide copolymers, DADMAC-sulfur dioxide-introduced copolymers, maleic acid-DADMAC-sulfur dioxide-introduced copolymers, acrylic acid-methacryloylaminopropyltrimethylammonium chloride (MAPTAC)-acrylamide copolymers, etc. The DADMAC homopolymer is a homopolymer having only repeating units derived from DADMAC. The DADMAC-acrylamide copolymer is a copolymer having repeating units derived from DADMAC and repeating units derived from acrylamide. The acrylic acid-DADMAC-acrylamide copolymer is a polymer having repeating units derived from DADMAC, repeating units derived from acrylamide, and repeating units derived from acrylic acid.

[0050] Examples of DADMAC polymers include compounds containing repeating units represented by the following (c10). Examples of DADMAC homopolymers include compounds consisting only of repeating units represented by the following (c10) ((c10) component).

[0051] [Chemical formula]

[0052] Examples of the DADMAC·acrylamide copolymer include compounds ((c11) component) containing repeating units represented by the following general formula (c11). [Chemical formula]

[0053] In the general formula (c11), β is a number representing the number of repetitions of the repeating unit derived from DADMAC, and γ is a number representing the number of repetitions of the repeating unit derived from acrylamide. The (c11) component may be a random copolymer or a block copolymer.

[0054] Examples of the acrylic acid·DADMAC·acrylamide copolymer include compounds ((c12) component) represented by the following general formula (c12).

[0055] [Chemical formula]

[0056] In the general formula (c12), α is a number representing the number of repetitions of the repeating unit derived from acrylic acid, β is a number representing the number of repetitions of the repeating unit derived from DADMAC, and γ is a number representing the number of repetitions of the repeating unit derived from acrylamide. The (c12) component may be a random copolymer or a block copolymer.

[0057] The weight average molecular weight of the DADMAC polymer is preferably from 3,000 to 2,000,000, more preferably from 4,000 to 1,500,000, and even more preferably from 5,000 to 1,300,000.

[0058] Examples of the DADMAC polymer include "MERQUAT100" (component (c10), weight average molecular weight of 150,000, manufactured by Lubrizol Corporation), "Merquat (registered trademark) 295 Polymer" (component (c11), weight average molecular weight of 190,000, manufactured by Lubrizol Corporation), "Merquat740 Polymer" (component (c11), weight average molecular weight of 120,000, manufactured by Lubrizol Corporation), and the like.

[0059] The degree of cationization of component (C) is preferably 0.5 to 3.5% by mass, more preferably 1.5 to 2.5% by mass. When the degree of cationization is within the above range, the feeling of retention is further enhanced. Here, the "degree of cationization" means the content ratio (% by mass) of nitrogen atoms derived from the cationizing agent in the molecule of component (C), that is, the content ratio of nitrogen atoms with respect to the total mass of component (C).

[0060] The degree of cationization of component (C) can be determined by calculation based on the specified chemical structure. When the ratio of repeating units in component (C) is unknown or the chemical structure of component (C) is not specified, the degree of cationization of component (C) is calculated from the experimentally determined nitrogen content. As a method for measuring the nitrogen content of component (C), the Kjeldahl method can be used, but it may be measured by other methods for convenience.

[0061] The viscosity of a 2% by mass aqueous solution of component (C) at 25°C is preferably 50 to 35,000 mPa·s, more preferably 70 to 500 mPa·s, and even more preferably 70 to 200 mPa·s. When the viscosity of the 2% by mass aqueous solution of component (C) is within the above range, the water drainage property during low-concentration washing is excellent. The viscosity is the value measured with a B-type viscometer for a 2% by mass aqueous solution of component (C) at 25°C. The measurement conditions for the viscosity are as follows.

[0062] Measurement conditions: [Rotor] The rotor number and rotor rotation speed corresponding to the viscosity to be measured are as follows. · Viscosity less than 500 mPa·s: Rotor number No.2, rotation speed 60 rpm. · Viscosity of 500 mPa·s or more and less than 2000 mPa·s: Rotor number No.3, rotation speed 60 rpm. · Viscosity of 2000 mPa·s or more and less than 10000 mPa·s: Rotor number No.4, rotation speed 60 rpm. · Viscosity of 10000 mPa·s or more and less than 50000 mPa·s: Rotor number No.4, rotation speed 12 rpm. [Reading of numerical value] 60 seconds after the start of the rotor rotation.

[0063] These (C) components may be used alone or in combination of two or more.

[0064] The content of the (C) component is preferably 0.02 to 1% by mass, more preferably 0.1 to 0.5% by mass, and even more preferably 0.2 to 0.4% by mass based on the total mass of the liquid detergent composition. If the content of the (C) component is at least the above lower limit value, the sense of stickiness can be further improved, and if it is at most the above upper limit value, nulling can be further suppressed.

[0065] The mass ratio of the (A2) component to the (C) component, represented by the mass ratio (A2) / (C) (hereinafter also referred to as "A2 / C ratio"), is 0.2 to 100, preferably 1.5 to 45, and more preferably 2.5 to 25. When the A2 / C ratio is at least the above lower limit value, the sense of stickiness can be further enhanced, and when the A2 / C ratio is at most the above upper limit value, nulling can be further suppressed.

[0066] The mass ratio represented by [(A1) component + (A2) component] / (C) component (hereinafter also referred to as "(A1 + A2) / C ratio") is preferably 10 to 500, more preferably 12 to 450, and even more preferably 25 to 150. If the (A1 + A2) / C ratio is within the above range, it is easy to achieve both an improvement in oil stain detergency and an improvement in retention.

[0067] <Optional component> The liquid detergent composition may contain optional components other than the components (A1), (A2), (B), and (C) as long as the effects of the present invention are not impaired.

[0068] As the optional components, any components used in liquid detergent compositions for tableware may be used. Examples of the optional components include water, surfactants other than the components (A1), (A2), and (B) (optional surfactants), hydroxy acids or their salts, hydrotropes, preservatives, inorganic builders, pH adjusters, chelating agents, isothiazolinone and its derivatives, fragrances, dyes, thickeners, and the like.

[0069] Examples of the optional surfactants include anionic surfactants other than the components (A1) and (A2), nonionic surfactants ((D) component), cationic surfactants (excluding those corresponding to the component (C)), and the like. Examples of the anionic surfactants other than the components (A1) and (A2) include phosphate ester type anionic surfactants such as alkyl phosphate esters or their salts, polyoxyalkylene alkyl phosphate esters or their salts, polyoxyalkylene alkylphenyl phosphate esters or their salts, and glycerin fatty acid ester monophosphate esters or their salts. Examples of the salt forms of these anionic surfactants include alkali metal salts (such as sodium salts and potassium salts), alkaline earth metal salts (such as magnesium salts), and alkanolamine salts (such as monoethanolamine salts and diethanolamine salts).

[0070] The nonionic surfactant ((D) component) is not particularly limited, and any of the general nonionic surfactants used in conventional dishwashing detergents can be used. Examples include polyoxyalkylene addition type nonionic surfactants represented by the following general formula (8), nonionic surfactants represented by the following general formula (9), alkyl glycosides, sorbitan fatty acid esters, and the like. Among these, polyoxyalkylene (2 to 3 carbon atoms) alkyl (10 to 18 carbon atoms) ether (average number of moles of alkylene oxide added: 5 to 20) is preferred. The nonionic surfactant may be used alone or in appropriate combination of two or more thereof. R 6 -O-(R 7 O) j -H ···(8) (In general formula (8), R 6 is a linear or branched hydrocarbon group having 10 to 18 carbon atoms, R 7 is a hydrocarbon group having 1 to 3 carbon atoms, and j is the average number of repetitions of (R 7 O), and is a number satisfying 1 ≦ j ≦ 20.) In general formula (8), the number of carbon atoms of R 6 is 10 to 18, preferably 10 to 16, more preferably 10 to 14. As the hydrocarbon group of R 6 an alkyl group or an alkenyl group is preferable. In general formula (8), as the hydrocarbon group of R 7 an alkylene group is preferable, and an ethylene group and a propylene group are more preferable. Further, as (R 7 O), an oxyethylene group and an oxypropylene group may be mixed. When an oxyethylene group and an oxypropylene group are mixed, they may be mixed randomly or in block form. In general formula (8), j is 1 to 20, preferably 5 to 15. R 8 -C(=O)-NH-(R 9 O) k -H ···(9) (In general formula (9), R 8 is a linear or branched alkyl group having 5 to 19 carbon atoms, or a linear or branched alkenyl group having 5 to 19 carbon atoms, R 9 is a linear or branched alkylene group having 2 to 4 carbon atoms, and k is the average number of repetitions of (R 9 O), and is a number satisfying 1 ≦ k ≦ 20.) In general formula (9), the number of carbon atoms of R 8 is 5 to 19, preferably 9 to 13. As R 8 an alkyl group is preferable. In general formula (9), R 9As for this, an ethylene group and a propylene group are preferable, and an ethylene group is more preferable. Further, as for (R 9 O), an oxyethylene group and an oxypropylene group may be mixed. When an oxyethylene group and an oxypropylene group are mixed, they may be mixed randomly or in a block form. In the general formula (9), k is from 1 to 20, and preferably from 1 to 4.

[0071] As for the nonionic surfactant, in addition to the effects of the present invention, since the persistence of foam required as the basic performance of a dishwashing detergent is particularly easily obtained, among the polyoxyalkylene addition type nonionic surfactants represented by the general formula (8), in particular, R in the general formula (8) 6 is preferably a branched-chain hydrocarbon group, more preferably a hydrocarbon group derived from a branched-chain primary alcohol, and a garbet alcohol type nonionic surfactant represented by the following formula (10) is even more preferable.

[0072] R 11 -CHR 12 -CH2-O-(R 13 O) p -H ···(10) (In the general formula (10), R 11 and R 12 are each independently a chain-like monovalent hydrocarbon group, the total number of carbon atoms of R 11 and R 12 is from 4 to 16, R 13 is a hydrocarbon group having 1 to 3 carbon atoms, and p is a number from 1 to 20 indicating the average number of repetitions of R 13 O.)

[0073] The garbet alcohol type nonionic surfactant has a hydrophobic part (R 11 -CH(R 12)-CH2-) has a bulky structure. This makes it easy to disrupt the arrangement of surfactants in the liquid detergent composition, and compared with a general branched nonionic surfactant that is not a garbet alcohol type, solidification is less likely to occur when the liquid detergent composition is placed at a low temperature, and it is easier to enhance the liquid stability. Also, because the structure of the hydrophobic part is bulky, when a garbet alcohol type nonionic surfactant adsorbs to a hydrophobic substance such as oil stain, while the total amount of surfactants arranged at the stain interface decreases, the ability to lower the surface tension increases, so high oil stain detergency is exhibited.

[0074] In general formula (10), R 11 and R 12 are each independently a chain-like monovalent hydrocarbon group. The total number of carbon atoms of R 11 and R 12 is 4 to 16, preferably 4 to 14, more preferably 6 to 14, and even more preferably 6 to 12. R 11 and R 12 The chain-like monovalent hydrocarbon groups in may be linear or branched. The chain-like monovalent hydrocarbon group may or may not have an unsaturated bond. As the chain-like monovalent hydrocarbon group, an alkyl group or an alkenyl group is preferred. R 11 When the number of carbon atoms of and the number of carbon atoms of R 12 are different, the number of carbon atoms of the one with fewer carbon atoms among R 11 and R 12 is preferably 2 to 7, and the number of carbon atoms of the one with more carbon atoms is preferably 4 to 14.

[0075] R 11 -CHR 12 -CH2- in general formula (10) is the residue obtained by removing one hydroxyl group from garbet alcohol (R 11 -CHR 12 -CH2-OH). Garbet alcohol is an alcohol obtained by subjecting a raw material alcohol to a garbet reaction (gelbe reaction). In the garbet reaction, two molecules of the raw material alcohol condense and dimerize. For example, as the raw material alcohol, R 14 -CH2-CH2-OH (however, R14 is a linear monovalent hydrocarbon group having 1 to 7 carbon atoms. When using), R 14 -CH2-CH2-CHR 14 -CH2-OH, the resulting garbet alcohol can be obtained. The two raw material alcohols forming the garbet alcohol may be different. When the two raw material alcohols are the same, the difference between the number of carbon atoms of R 11 and the number of carbon atoms of R 12 is 2. R 11 -CH(R 12 )-CH2- specific examples include 2-ethylhexyl group, 2-propylheptyl group, etc.

[0076] p is from 1 to 20, preferably from 3 to 14, more preferably from 4 to 12, and most preferably from 5 to 10. R 13 is an alkylene group having 1 to 4 carbon atoms. As R 3 , an alkylene group having 2 to 3 carbon atoms is preferred, and an alkylene group having 2 carbon atoms is more preferred. That is, as R 13 O, at least one of EO and PO is preferred, and EO is more preferred. (R 13 O) p EO and PO may be mixed. When EO and PO are mixed, they may be mixed randomly or in a block form.

[0077] Examples of the garbet alcohol type nonionic surfactant include 2-propylheptyl alcohol ethoxylate, 2-ethylhexyl alcohol ethoxylate, etc. Among these, 2-propylheptyl alcohol ethoxylate is preferred. The average number of moles of ethylene oxide added is preferably from 6 to 14, more preferably from 8 to 11, and most preferably 10. Specific examples of 2-propylheptyl alcohol ethoxylate include the product names "Lutensol XP-100" and "Lutensol XP-80" manufactured by BASF. Specific examples of 2-ethylhexyl alcohol ethoxylate include products with the trade name "Newcol 1008" manufactured by Nippon Emulsifier Co., Ltd.

[0078] These (D) components may be used alone or in combination of two or more.

[0079] When the liquid detergent composition contains a nonionic surfactant, the content of the nonionic surfactant is preferably 1 to 15% by mass, more preferably 2 to 12% by mass, and even more preferably 4 to 8% by mass based on the total mass of the liquid detergent composition. If the content of the nonionic surfactant is at least the above lower limit, the detergency for oily stains is improved. If the content of the nonionic surfactant is at most the above upper limit, the feeling of stickiness is improved, the formation of a film can be more favorably suppressed, and the liquid stability is good.

[0080] Examples of the cationic surfactant include long-chain aliphatic amide alkyl tertiary amines such as dimethylaminopropylamide caprylate, dimethylaminopropylamide capricate, dimethylaminopropylamide laurate, dimethylaminopropylamide myristate, dimethylaminopropylamide palmitate, dimethylaminopropylamide stearate, dimethylaminopropylamide behenate, dimethylaminopropylamide oleate, or salts thereof; aliphatic ester alkyl tertiary amines such as palmitate ester propyldimethylamine, stearate ester propyldimethylamine, or salts thereof; dimethylethanolaminopropylamide palmitate, dimethylethanolaminopropylamide stearate; quaternary compounds such as alkyltrimethylammonium salts, dialkyldimethylammonium salts, alkylbenzyldimethylammonium salts, alkylpyridinium salts, etc. Examples of the salt form of the cationic surfactant include alkali metal salts (such as sodium salts, potassium salts), alkaline earth metal salts (such as magnesium salts), alkanolamine salts (such as monoethanolamine salts, diethanolamine salts), etc. These cationic surfactants may be used alone or in combination of two or more.

[0081] The total amount of the surfactant is preferably 10 to 40% by mass, more preferably 15 to 35% by mass, and even more preferably 18 to 30% by mass based on the total mass of the liquid detergent composition.

[0082] As the hydroxy acid or its salt ((E) component), an organic compound having a carboxy group (-COOH) and an alcoholic hydroxy group (-OH) may be used. For example, glycolic acid, lactic acid, hydroxybutyric acid, malic acid, tartaric acid, citric acid, gluconic acid, glyceric acid, tropic acid, benzoic acid or their salts can be mentioned. Among them, lactic acid or its salt is particularly preferred because of its excellent effect of reducing the dry feeling of the hand skin. Examples of the salt form of the (E) component include salts of alkali metals such as sodium and potassium; salts of alkaline earth metals such as calcium and magnesium, and these may be mixed. Among them, an organic compound having a monovalent carboxylic acid group is preferred, a salt of an alkali metal is preferred, and a sodium salt is more preferred because of its good effect of reducing the dry feeling of the hand skin.

[0083] These (E) components may be used alone or in combination of two or more. When the liquid detergent composition contains the (E) component, the content of the (E) component is preferably 0.5 to 10% by mass, more preferably 1 to 8% by mass, and even more preferably 2 to 7.5% by mass based on the total mass of the liquid detergent composition. When the content of the (E) component is at or above the lower limit value, it is easy to impart a moist feeling to the hand skin, and the effect of reducing the dry feeling of the hand skin is further improved. On the other hand, when it is at or below the upper limit value, the detergency against oil stains is further improved.

[0084] Water functions as a solvent for the liquid detergent composition. The water content is more preferably 40 to 85% by mass, and even more preferably 60 to 80% by mass, based on the total mass of the liquid detergent composition. If the water content is at least the above lower limit value, gelation is suppressed and the uniformity of the liquid is enhanced. If the water content is at most the above upper limit value, the viscosity does not become too low and the usability is excellent.

[0085] As the hydrotrope, xylene sulfonic acid or its salt, toluene sulfonic acid or its salt, cumene sulfonic acid or its salt, mesitylene sulfonic acid or its salt, benzoic acid or its salt are preferable, toluene sulfonic acid or its salt, benzoic acid or its salt are more preferable, and p-toluene sulfonic acid or its salt, benzoic acid or its salt are particularly preferable.

[0086] Examples of the chelating agent include aminocarboxylic acid type chelating agents, organic acids such as glycolic acid, diglycolic acid, lactic acid, tartaric acid, carboxymethyl tartaric acid, citric acid, malic acid, gluconic acid and their salts. Examples of the salt include sodium salts. As the chelating agent, aminocarboxylic acid type chelating agents are more preferable.

[0087] Examples of the chelating agent include ethylenediaminetetraacetic acid (EDTA), hydroxyethylenediaminetriacetic acid (HEDTA), dihydroxyethylglycine (DHEG), hydroxyethyliminodiacetic acid (HIDA), diethylenetriaminepentaacetic acid (DTPA), methylglycinediacetic acid (MGDA), aspartic acid diacetic acid (ASDA), isoserine diacetic acid (ISDA), β-alanine diacetic acid (ADAA), serine diacetic acid (SDA), glutamic acid diacetic acid (GLDA), iminodiacetic succinic acid (IDS), hydroxyiminodiacetic succinic acid (HIDS), N-lauroylethylenediaminetriacetic acid, nitrilotriacetic acid (NTA), triethylenetetraaminehexaacetic acid (TTHA), 1,3-propanediaminetetraacetic acid (PDTA), 1,3-diamino-2-hydroxypropane tetraacetic acid (DPTA-OH), glycol ether diamine tetraacetic acid (GEDTA), dicarboxymethylglutamic acid (CMGA), (S,S)-ethylenediamine disuccinic acid (EDDS), and salts thereof. Examples of the salt form of the chelating agent include sodium salt, potassium salt, and the like. As the chelating agent, MGDA, GLDA, EDTA, HEDTA, DHEG, HIDA, and DTPA are preferable, MGDA, GLDA, and EDTA are more preferable, and further MGDA is preferable. These chelating agents may be used alone or in combination of two or more.

[0088] When the liquid detergent composition contains a chelating agent, the content of the chelating agent is preferably 0.2 to 5% by mass, more preferably 0.5 to 2.5% by mass, based on the total mass of the liquid detergent composition.

[0089] The above-mentioned chelating agent may be used alone or in combination of two or more. The content of the chelating agent is preferably 0.1 to 5% by mass, more preferably 0.5 to 5% by mass, and still more preferably 1 to 3% by mass, based on the total mass of the liquid detergent composition.

[0090] Examples of isothiazolinone and its derivatives include methylisothiazolinone (MIT), chloromethylisothiazolinone (CMIT), 1,2-benzisothiazol-3-one (BIT), and 4-formylphenylboronic acid (4FPBA). Isothiazolinone and its derivatives may be used alone or in combination of two or more. When the liquid detergent composition contains isothiazolinone and its derivatives, the content of isothiazolinone and its derivatives is preferably 0.002 to 0.02% by mass, more preferably 0.005 to 0.018% by mass, and still more preferably 0.009 to 0.015% by mass based on the total mass of the liquid detergent composition.

[0091] Examples of the inorganic builder include metal oxides. Examples of the metal oxide include zinc oxide and magnesium oxide. When the liquid detergent composition contains an inorganic builder, the content of the inorganic builder is preferably 0.01 to 5.0% by mass based on the total mass of the liquid detergent composition.

[0092] Examples of the pH adjuster include inorganic alkalis, organic alkalis, and inorganic acids. Examples of the inorganic alkali include sodium hydroxide, potassium hydroxide, sodium carbonate, and potassium carbonate. Examples of the organic alkali include amine compounds such as monoethanolamine, diethanolamine, triethanolamine, N-methylpropanol, 2-amino-2-methyl-1-propanol, N-(β-aminoethyl)ethanolamine, diethylenetriamine, morpholine, and N-ethylmorpholine. Examples of the inorganic acid include sulfamic acid, hydrochloric acid, and sulfuric acid. Examples of the organic acid include acetic acid.

[0093] <Physical properties> The pH of the liquid detergent composition of the present invention at 25°C is preferably 6 to 8. If the pH of the liquid detergent composition at 25°C is within the above range, the formation of lumps can be more effectively suppressed. The pH (25 °C) of the liquid detergent composition is a value measured by a method conforming to JIS Z 8802:2011 "Method for Measuring pH".

[0094] The viscosity of the liquid detergent composition of the present invention at 25 °C is preferably 10 to 250 mPa·s, more preferably 50 to 200 mPa·s. If the viscosity is at least the above lower limit value, dripping of the liquid from the pouring opening of the container can be well suppressed. If the viscosity is at most the above upper limit value, the liquid detergent composition can be discharged more easily from the container.

[0095] The viscosity of the liquid detergent composition can be adjusted by the water content, addition of a thickener, etc. The viscosity of the liquid detergent composition is a value measured 60 seconds after the start of rotation of the rotor at a rotor number of No. 1 and a rotor rotation speed of 60 rpm using a B-type viscometer with the measurement object at 25 °C.

[0096] (Manufacturing method) The liquid detergent composition of the present invention is manufactured by a conventionally known manufacturing method. As a manufacturing method of the liquid detergent composition, for example, there is a method of adding the components (A1), (A2), (B), and (C) to a part of water, mixing them, adjusting the pH, and then adding the remaining part of water.

[0097] (Usage method) As a usage method of the liquid detergent composition, for example, there is a method of applying the liquid detergent composition to a cleaning tool, foaming the liquid detergent composition with this cleaning tool, and rubbing and washing an object to be cleaned with the foamed cleaning tool. Alternatively, there is a method of dissolving the liquid detergent composition in water to form a cleaning liquid, immersing the object to be cleaned in the cleaning liquid, and rubbing and washing it with a cleaning tool. In any method, the object to be cleaned after rubbing and washing is rinsed with water, and then the object to be cleaned is drained.

[0098] Examples of the cleaning tool include sponges such as single-layer sponges, sponge scrubbers, and net sponges.

[0099] Examples of the object to be cleaned include ceramics and metal utensils. Examples of ceramics include tableware such as plates, teacups, and bowls. Examples of metal utensils include tableware such as forks and spoons, and stainless steel sinks.

[0100] <Function and Effect> When the liquid detergent composition of the present invention is applied to a cleaning tool such as a sponge, water is added and foamed, a complex of an anionic component (A2) and a cationic component (C) precipitates, and it is considered that a lingering feeling is obtained by this staying on the skin of the hand. In addition, since the complex of the component (A2) and the component (C) is in a dispersed state in the preparation before use, it is considered to have excellent liquid stability. Conventionally, the component (C) has been used to improve the water drainage property for the purpose of a crisp finish as a quick-drying component, but in the present invention, by using the component (A2) and the component (C) in combination, it is considered that a lingering feeling can be obtained by the above-described action mechanism.

Examples

[0101] Hereinafter, the present invention will be described in detail with reference to examples, but the present invention is not limited to the following description.

[0102] (Raw materials used) <Component (A1)> · A1-1: AES(1EO), sodium polyoxyethylene alkyl ether sulfate prepared in Preparation Example 1 below, R in the general formula (a1) 1 is a linear alkyl group having 12 to 14 carbon atoms, p is 1, M + is a compound where M is sodium. (Preparation Example 1) 400 g of "CO1270 alcohol" (C12 / C14 = 75 / 25, mass ratio), a product of Procter & Gamble, as a raw material alcohol and 0.8 g of a potassium hydroxide catalyst as a reaction catalyst were charged into a 4 L autoclave. After replacing the inside of the autoclave with nitrogen, the temperature was raised while stirring. Note that "C12" means an alcohol with 12 carbon atoms, "C14" means an alcohol with 14 carbon atoms, and "C12 / C14" means the ratio of an alcohol with 12 carbon atoms to an alcohol with 14 carbon atoms. Subsequently, while maintaining the temperature at 180°C and the pressure at 0.3 MPa or less, 91 g of ethylene oxide was introduced and reacted. The average number of moles of ethylene oxide added to the obtained polyoxyalkylene ether was 1. Next, 237 g of the alcohol ethoxylate thus obtained was placed in a 500 mL flask equipped with a stirrer. After purging with nitrogen, 96 g of liquid anhydrous sulfuric acid (sulfan) was slowly added dropwise while maintaining the reaction temperature at 40°C. After completion of the dropwise addition, stirring was continued for 1 hour (sulfation reaction) to obtain polyoxyethylene alkyl ether sulfate. Subsequently, this was neutralized with an aqueous sodium hydroxide solution to obtain A1-1. · A1-2: SAS, sodium secondary alkane sulfonate having 14 to 17 carbon atoms, "HOSTAPUR (registered trademark) SAS30A" manufactured by Clariant Japan K.K. · A1-3: Sodium α-olefin sulfonate (AOS) having 14 carbon atoms in the alkyl group (trade name "Lipolan LB-440", manufactured by Lion Specialty Chemicals Co., Ltd.).

[0103] <(A2) component> · A2-1: Potassium coconut fatty acid (manufactured by Lion Specialty Chemicals Co., Ltd., trade name "Potassium coconut fatty acid", a soap-based anionic surfactant). · A2-2: Palmitic acid (manufactured by Junsei Chemical Co., Ltd., trade name "Palmitic acid"). · A2-3: Sodium polyoxyethylene alkyl ether acetate, in the general formula (a2), R 2 is a linear alkyl group having 12 carbon atoms, p is 3, M + is a compound in which M is sodium (manufactured by Taekwang Oil & Fat Chemical Industry Co., Ltd., trade name "Typole Soft EC-330N").

[0104] <(B) component> · B-1: Lauryl dimethylamine oxide (AX), in the above general formula (b1), R 21= Linear alkyl group with 12 carbon atoms, R 23 = Methyl group, R 24 = Methyl group, r = 0 (manufactured by Lion Specialty Chemicals Co., Ltd., trade name "CadenaX DM12D-W"). <(C) component> · C-1: Cationized cellulose, degree of cationization 1.9% by mass, viscosity of 2% aqueous solution at 25°C 130 mPa·s, compound containing repeating unit represented by general formula (c5), trade name "UCARE JR-125", manufactured by Dow Chemical Company. · C-2: Cationized cellulose, degree of cationization 1.9% by mass, viscosity of 2% aqueous solution at 25°C 400 mPa·s, compound containing repeating unit represented by general formula (c5), trade name "UCARE JR-400", manufactured by Dow Chemical Company. · C-3: Cationized cellulose, degree of cationization 1.0% by mass, viscosity of 2% aqueous solution at 25°C 30000 mPa·s, compound containing repeating unit represented by general formula (c5), trade name "UCARE LR30M", manufactured by Dow Chemical Company. · C-4: DADMAC homopolymer, compound containing repeating unit represented by general formula (c10), repeating unit derived from diallyldimethylammonium monomer = 100% by mass, degree of cationization 8.7% by mass, mass average molecular weight 150,000, trade name "MERQUAT100", manufactured by Lubrizol Corporation. · C-5: DADMAC copolymer, compound containing repeating unit represented by general formula (c11), repeating unit derived from acrylamide monomer = 76% by mass, repeating unit derived from diallyldimethylammonium monomer = 24% by mass, mass average molecular weight 120,000, trade name "MERQUAT740", manufactured by Lubrizol Corporation.

[0105] <Optional component> ≪(D) component≫ · D-1: 2-Propylheptyl alcohol ethoxylate, trade name "Lutensol XP-100", manufactured by BASF SE. ≪(E) component≫ ·E-1: Sodium lactate, manufactured by Purac Japan Co., Ltd., trade name "Fermented Sodium Lactate 60% (S / HQ60)". ≪Common components≫ (The ratios described after each component are ratios based on the total amount of the liquid detergent composition) · Hydrotrope: p-Toluenesulfonic acid, pTS-H, 2% by mass. · Hydrotrope: Sodium benzoate, 0.75% by mass. · Chelating agent: Citric acid, 0.26% by mass. · Inorganic builder: Zinc oxide, 0.06% by mass. · pH adjuster: Sulfamic acid, 0.161% by mass. · Methylisothiazolinone: MIT, 10 ppm by mass. · Fragrance: 0.3% by mass. · pH adjuster: Sulfuric acid or aqueous sodium hydroxide solution, appropriate amount (the amount required to adjust the pH of the liquid detergent composition to 7.8). · Water, ion-exchanged water: Balance (the amount required to make the total amount of the liquid detergent composition 100% by mass).

[0106] (Evaluation method) <Feeling evaluation> Evaluation method: Wash hands with a liquid hand soap (trade name "Kirei Kirei Medicated Liquid Hand Soap", manufactured by Lion Corporation) in advance, and wipe off the moisture thoroughly with a towel. Drop 2 g of the detergent solution onto a sponge (trade name "Scotch-Brite (registered trademark)", manufactured by 3M Japan Ltd.) containing 38 g of tap water at 25°C, and knead and foam it 10 times on a ceramic vessel with a diameter of 21 cm. Place the foamed sponge on the ceramic vessel, and touch the foam with your hands for 1 minute so that the palm and back of the hand are evenly covered with the foam. Rinse hands with tap water at 25°C for 10 seconds, wipe off the moisture thoroughly with a towel, and evaluate "staying feeling", "lack of stiffness (dry feeling)", and "lack of squeak (tightness)" based on the following evaluation criteria 1 minute later.

[0107] ≪Evaluation criteria for staying feeling: (Pass if ○ or above)≫ ◎◎: Feel a very strong feeling that the base stays on the surface of the hand skin and is protected. ◎: Can quite feel the sensation that the base stays and is protected on the surface of the hand skin. 〇: Can slightly feel the sensation that the base stays and is protected on the surface of the hand skin. △: Can faintly feel the sensation that the base stays and is protected on the surface of the hand skin. ×: Can't feel the sensation that the base stays and is protected on the surface of the hand skin at all.

[0108] ≪Evaluation criteria for squeakiness: (Pass with 〇 or above)≫ ◎◎: Can't feel the tightness of the hand skin at all. ◎: Can hardly feel the tightness of the hand skin. 〇: Don't feel the tightness of the hand skin much. △: Can slightly feel the tightness of the hand skin. ×: Can feel the tightness of the hand skin very much.

[0109] ≪Evaluation criteria for greasiness: (Pass with 〇 or above)≫ ◎◎: Can't feel the dryness of the hand skin at all. ◎: Can hardly feel the dryness of the hand skin. 〇: Don't feel the dryness of the hand skin much. △: Can slightly feel the dryness of the hand skin. ×: Can feel the dryness of the hand skin very much.

[0110] <Evaluation of lathering> 45 g of tap water and 5 g of the liquid detergent composition were put into a 100 mL beaker and stirred well. 40 g of the diluted liquid detergent composition was dropped onto the ceramic ware to be washed. This dish was rubbed 10 times with fingers, and the degree of lathering was evaluated according to the following evaluation criteria. ≪Evaluation criteria for lathering: (Pass with 〇 or above)≫ ◎◎: Can hardly feel lathering. ◎: Can faintly feel lathering. 〇: Can slightly feel lathering. △: Can quite feel lathering. ×: Can feel lathering very much.

[0111] <Detergency evaluation> 1.2 g of beef tallow (manufactured by Fujifilm Wako Pure Chemical Corporation) colored to a Sudan IV (manufactured by Kanto Chemical Co., Inc.) concentration of 1% by mass was uniformly applied to the entire inner surface of a plastic container (product name: "Neo Keeper", manufactured by Iwasaki Kogyo Co., Ltd.) measuring 10 cm in length × 15 cm in width × 5 cm in height to create a dirt model. 38 g of tap water and 2 g of the liquid detergent composition were placed in a dishwashing sponge (product name: "Scotch-Brite", manufactured by 3M Japan Ltd.) measuring 11.5 cm in length × 7.5 cm in width × 3 cm in height, and kneaded by hand 10 times. Then, the bottom surface of the above dirt model was rubbed 10 times, the side surfaces were rubbed 10 times, and the four corners were each rubbed 5 times. After rinsing with tap water, the degree of removal of oil stains on the inner surface of the container was confirmed, and the detergency was evaluated according to the following evaluation criteria.

[0112] ≪Evaluation criteria for detergency: (Pass if ○ or above)≫ ◎◎: No remaining stain of the colored beef tallow is visually observable, and there is no dullness due to the remaining beef tallow. ◎: No remaining stain of the colored beef tallow is visually observable, but there is a slight dullness due to the remaining beef tallow. 〇: The remaining stain of the colored beef tallow is visually observable, and there is a slight dullness due to the remaining beef tallow. △: Considerable remaining stain of the colored beef tallow is visible, and there is dullness due to the remaining beef tallow. ×: A very large amount of the remaining stain of the colored beef tallow is visible.

[0113] <Evaluation of liquid stability: (Pass if △ or above)> A glass container was used as a colorless and transparent container. 100 g of the liquid detergent composition immediately after production was filled into a colorless and transparent container, covered with a lid and sealed, and left standing in a thermostatic bath set at 50 °C or -5 °C for 30 days. The appearance of the liquid detergent composition after storage was visually observed and evaluated according to the following evaluation criteria.

[0114] ≪Evaluation criteria for liquid stability≫ 〇: No precipitation, sedimentation, or phase separation is observed. △: One or more of precipitation, sedimentation, or phase separation are observed, but they are eliminated when left standing at 25 °C for 30 minutes. ×: One or more of precipitation, sedimentation, and phase separation are observed and are not eliminated even after standing at 25°C for 30 minutes.

[0115] (Examples 1 to 17, Comparative Examples 1 to 6) According to the compositions shown in Tables 1 to 3, the components (A1), (A2), (B), and (C) and optional components were added to water and mixed to prepare liquid detergent compositions for each example with a pH of 7.8. Note that the amounts shown in the tables are values in terms of pure components. Also, components for which the amounts are not described in the tables are not formulated. For the liquid detergent compositions of each example, a feel evaluation, an evaluation of stickiness, a detergency evaluation, and a liquid stability evaluation were performed, and the results are shown in the tables.

[0116] [Table 1]

[0117] [Table 2]

[0118] [Table 3]

[0119] As shown in Tables 1 to 3, in Examples 1 to 17, all of the feel evaluation, the evaluation of stickiness, the detergency evaluation, and the liquid stability evaluation were "〇" to "◎◎". In Comparative Example 1 lacking the (A2) component, the evaluation of the sense of stickiness was "△". In Comparative Example 2 lacking the (B) component, the evaluation of the absence of squeak was "×". In Comparative Example 3 lacking the (C) component, the evaluation of the sense of stickiness was "×". In Comparative Example 4 where the A2 / C ratio was less than 0.2, the evaluation of the absence of stickiness was "×". In Comparative Example 5 where the A2 / C ratio exceeded 100, the evaluation of the sense of stickiness was "×". In Comparative Example 6 where A1 + A2 exceeds 30, the evaluations of no squeaking, no stickiness, and no bulkiness were all "×". From the above results, it was confirmed that by applying the present invention, the tactile sensation of the hands after dishwashing (retention feeling, lack of bulkiness (dry feeling), lack of squeaking (tightness)) can be felt, and it is possible to achieve both the detergency against oil stains and the lack of stickiness after dishwashing.

Claims

1. Component (A1): At least one anionic surfactant selected from the group consisting of sulfonate-type anionic surfactants and sulfate ester salt-type anionic surfactants, and Component (A2): A fatty acid salt-type anionic surfactant, and Component (B): An amine oxide-type surfactant, and Component (C): At least one cationic polymer selected from the group consisting of cationized cellulose and a cationic polymer containing a repeating unit derived from dimethyldiallylammonium chloride, and The total content represented by [(Component (A1) + Component (A2))] is 1 to 30% by mass based on the total mass of the liquid detergent composition, A liquid detergent composition for tableware, wherein the mass ratio represented by (Component (A2)) / (Component (C)) is 0.2 to 100.

2. The liquid detergent composition for tableware according to claim 1, wherein the component (C) contains cationized cellulose.

3. The liquid detergent composition for tableware according to claim 1 or 2, wherein the mass ratio represented by [(Component (A1) + Component (A2))] / (Component (B)) is 0.8 to 3.

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