Thickener for cleaning agent and cleaning agent composition containing the same

Abstract

[Subject] To provide a thickener capable of imparting appropriate viscosity to a liquid cleaning agent containing an anionic surfactant such as N-acylmethyl taurine as a main basic component that is difficult to thicken. [Solution] A thickener for a cleaning agent, comprising: 40 to 80% by mass of a fatty acid ester (A) of polyoxyalkylene pentaerythritol represented by the following general formula (1), #imgabs0# (wherein R 1 ~R 4 Each independently represents a fatty acid residue having 11 to 23 carbon atoms, and AO represents an oxyalkylene group having 2 to 4 carbon atoms. In addition, p, q, r and s are integers satisfying the relationship of 20≤p+q+r+s≤300); 10 to 50% by mass of fatty acid alkanolamide (B); and 2 to 30% by mass of a higher fatty acid having 12 to 24 carbon atoms (C).

Description

Technical Field

[0001] The present invention relates to a thickening agent for cleaning agents, and more particularly to a thickening agent capable of imparting appropriate viscosity to a cleaning agent containing, as a main component, an anionic surfactant such as N-acylmethyl taurine, which is difficult to thicken. Background Art

[0002] Liquid cleaning compositions containing N-acylmethyl taurine or amino acid surfactants as main components are generally low in irritation, but have low viscosity and are difficult to use, and it is also difficult to give them the appropriate viscosity required for use. Therefore, various technologies have been proposed to date for the purpose of building the viscosity of anionic surfactants that are difficult to thicken.

[0003] A weakly acidic liquid cleaning agent formula in which fatty acid diethanolamide and a water-soluble inorganic salt are mixed with an N-acylamino acid surfactant has been disclosed (see Patent Document 1). According to this technology, the viscosity of the cleaning agent composition can be increased without affecting the user experience of the N-acylamino acid surfactant, but in order to build a particularly sufficient viscosity, the low-temperature stability of the cleaning agent composition in the portion where the inorganic salt concentration is close to the upper limit is insufficient.

[0004] A liquid detergent formulation has been disclosed in which an inorganic salt is used in combination with an amphoteric surfactant, a semi-polar surfactant, and a cationic surfactant in order to reduce the amount of water-soluble inorganic salt to be formulated and to build viscosity (see Patent Document 2). Although improvements in low-temperature stability are observed, the inorganic salt is an essential component and thus is difficult to use in combination with a conditioner, and is therefore not a satisfactory formulation.

[0005] On the other hand, studies have shown that fatty acid amide amines have high thickening properties in cleaning agents such as body washes and kitchen washes, and have more excellent workability, solubility and foaming power (see Patent Document 3). In addition, pentaerythritol polyoxyethylene tetrastearate also has a high thickening effect on liquid cleaning agents that are mainly composed of anionic surfactants that are difficult to thicken (see Patent Document 4).

[0006] Patent Document 1: Japanese Patent Publication No. 2-54400

[0007] Patent Document 2: Japanese Patent Application Publication No. 2003-147399

[0008] Patent Document 3: Japanese Patent Application Publication No. 2011-021110

[0009] Patent Document 4: Japanese Patent Application Publication No. 2008-63268 Summary of the invention

[0010] Problems to be solved by the invention

[0011] However, the formulation described in the examples of Patent Document 3 is a type of combination of aliphatic amide amine, sodium lauryl sulfate and an amphoteric surfactant, and no effect was confirmed for anionic surfactants (particularly amino acid surfactants) that are difficult to thicken.

[0012] When pentaerythritol polyoxyethylene tetrastearate of Patent Document 4 is used alone, the viscosity increases significantly, and it is difficult to control the viscosity to an appropriate level as a liquid detergent.

[0013] An object of the present invention is to provide a thickener capable of imparting appropriate viscosity to a liquid detergent containing, as a main component, an anionic surfactant that is difficult to thicken, such as N-acylmethyl taurine.

[0014] Solutions to Solve Problems

[0015] The present inventors have studied a thickener for solving the problem of imparting viscosity to a liquid detergent containing an anionic surfactant that is difficult to thicken as a main basic component, and found that the above-mentioned problem can be solved by combining a fatty acid ester of polyoxyethylene pentaerythritol, a fatty acid alkanolamide, and a higher fatty acid in a predetermined ratio, thereby completing the present invention.

[0016] That is, the present invention relates to the following contents:

[0017] [1] A thickening agent for a cleaning agent, comprising:

[0018] 40 to 80% by mass of a fatty acid ester (A) of polyoxyalkylene pentaerythritol represented by the following general formula (1),

[0019]

[0020] (Where R 1 ~R 4 Each independently represents a fatty acid residue having 11 to 23 carbon atoms, and AO represents an oxyalkylene group having 2 to 4 carbon atoms. In addition, p, q, r, and s are integers satisfying the relationship of 20≤p+q+r+s≤300);

[0021] 10 to 50% by mass of fatty acid alkanolamide (B); and

[0022] 2 to 30% by mass of a higher fatty acid having 12 to 24 carbon atoms (C).

[0023] (2) A cleaning composition comprising an anionic surfactant and the thickening agent for cleaning agents according to [1].

[0024] (3) The cleaning composition according to (2), wherein the anionic surfactant is one or more selected from the group consisting of N-acylamino acid salts, N-acylsarcosinates, and N-acylmethyltaurine salts.

[0025] (4) The cleaning composition according to (2) or (3), wherein the anionic surfactant is N-acylmethyl taurine.

[0026] (5) The cleaning composition according to any one of (2) to (4), further comprising an amphoteric surfactant.

[0027] Effects of the Invention

[0028] When the thickener for cleaning agents of the present invention is added to a cleaning agent composition mainly composed of an anionic surfactant that is difficult to thicken, the viscosity is increased to about 300 to 6000 mPa·s, which is generally suitable for a liquid cleaning agent composition.

[0029] By using the thickening agent for cleaning agents of the present invention, it is expected that the amount of anionic surfactants that are difficult to thicken in the cleaning agent composition can be increased (concentration can be increased).

[0030] Hereinafter, embodiments of the present invention will be described.

[0031] The fatty acid ester (A) of polyoxyalkylene pentaerythritol represented by the general formula (1) can be obtained, for example, by reacting a fatty acid having 12 to 24 carbon atoms with an alkylene oxide adduct of pentaerythritol.

[0032] AO in the general formula (1) is an oxyalkylene group having 2 to 4 carbon atoms, specifically, oxyethylene, 1,2- or 1,3-oxypropylene, 1,2-, 1,3- or 1,4-oxybutylene. Among these, oxyethylene and 1,2-oxypropylene are preferred, and oxyethylene is particularly preferred. p, q, r and s are the number of added moles of alkylene oxide, which is 0 or a positive integer, wherein p+q+r+s is 20 to 300, and from the viewpoint of touch or operability, preferably p+q+r+s is 80 to 200, and more preferably p+q+r+s is 120 to 180. AO may be the same or different, and when different, it may be any one of the addition modes of random addition, block addition or alternating addition.

[0033] Examples of the fatty acid having 12 to 24 carbon atoms include lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, and coconut oil fatty acid.

[0034] The ratio of the fatty acid ester (A) of polyoxyalkylene pentaerythritol in the thickening agent for cleaning agents of the present invention is 40 to 80% by mass, preferably 50 to 70% by mass, and particularly preferably 55 to 65% by mass from the viewpoint of thickening effect.

[0035] Liquid detergents can be thickened by containing a fatty acid ester (A) of polyoxyalkylene pentaerythritol in an amount of about 2 to 5% by mass relative to the total amount of a detergent composition containing an anionic surfactant that is difficult to thicken as a main component. However, since the viscosity increases sharply when it is used alone, it is difficult to control the viscosity to a practical level. That is, if a certain amount is not prepared, there is almost no thickening effect, and if it exceeds an appropriate amount, it may rapidly thicken and gel, etc., and it is extremely difficult to stably show a thickening effect.

[0036] On the other hand, by combining the fatty acid ester (A) of polyoxyalkylene pentaerythritol with the fatty acid alkanolamide (B) and the higher fatty acid (C), the thickening effect can be controlled, and for a liquid detergent having an acylmethyl taurate as an anionic surfactant that is difficult to thicken as a main basic component, it is possible to impart a practical viscosity as a liquid detergent while controlling the thickening effect.

[0037] Fatty acid alkanolamide (B) can be synthesized by the reaction of fatty acid, fatty acid derivative or oil and alkanolamine, for example, it can be the reaction product of saturated or unsaturated fatty acid having 8 to 20 carbon atoms or its methyl ester derivative, or coconut oil and alkanolamine having 2 to 5 carbon atoms. Specific examples of fatty acid, fatty acid derivative and oil used for the reaction include: caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, coconut oil fatty acid, or methyl ester derivatives thereof, or coconut oil. Specific examples of alkanolamine include: monoethanolamine, diethanolamine, isopropanolamine, methylethanolamine, etc. In these reaction products, be suitable for using lauric acid monoethanolamide (lauramide MEA), myristic acid monoethanolamide (myristic acid MEA), coconut oil fatty acid monoethanolamide (cocamide MEA), lauric acid diethanolamide (lauramide DEA), myristic acid diethanolamide (myristic acid DEA), coconut oil fatty acid diethanolamide (cocamide DEA), lauric acid isopropanolamide (lauramide MIPA), myristic acid isopropanolamide (myristic acid MIPA), coconut oil fatty acid isopropanolamide (cocamide MIPA), lauric acid methylethanolamide (lauramide methyl MEA), myristic acid methylethanolamide (myristic acid methyl MEA), coconut oil fatty acid methylethanolamide (cocamide methyl MEA), be particularly suitable for using coconut oil fatty acid monoethanolamide (cocamide MEA).In the present invention, can arbitrarily use one or more of these fatty acid alkanolamides.

[0038] The ratio of the fatty acid alkanolamide (B) in the thickener for cleaning agents of the present invention is 10 to 50% by mass, preferably 15 to 45% by mass, and particularly preferably 20 to 40% by mass from the viewpoint of the viscosity adjustment effect.

[0039] As the higher fatty acid (C) having 12 to 24 carbon atoms, for example, there can be mentioned: saturated fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, arachidic acid, behenic acid, and unsaturated fatty acids such as decenoic acid, undecenoic acid, dodecenoic acid, tetradecenoic acid, oleic acid, erucic acid, linoleic acid, linolenic acid, ricinoleic acid, etc. In the present invention, one or more of these higher fatty acids can be used arbitrarily, and among them, oleic acid and isostearic acid are preferred from the viewpoint of viscosity adjustment effect.

[0040] The ratio of the higher fatty acid (C) having 12 to 24 carbon atoms in the thickener for cleaning agents of the present invention is 2 to 30% by mass, and preferably 3 to 25% by mass from the viewpoint of the viscosity adjusting effect.

[0041] Preferred combinations of (A) to (C) in the thickening agent for cleaning agents of the present invention are not limited thereto, and examples thereof include the following combinations:

[0042] (I) (A) Polyoxyethylene pentaerythritol tetrastearate (B) Coconut oil fatty acid monoethanolamide, (C) Oleic acid

[0043] (II) (A) polyoxyethylene pentaerythritol tetrastearate, (B) coconut oil fatty acid monoethanolamide, (C) isostearic acid

[0044] (III) (A) polyoxyethylene pentaerythritol tetrastearate, (B) coconut oil fatty acid monoethanolamide, (C) stearic acid

[0045] (IV) (A) polyoxyethylene pentaerythritol tetrastearate, (B) coconut oil fatty acid diethanolamide, (C) oleic acid

[0046] (V) (A) polyoxyethylene pentaerythritol tetrastearate, (B) coconut oil fatty acid diethanolamide, (C) isostearic acid

[0047] (VI) (A) polyoxyethylene pentaerythritol tetrastearate, (B) coconut oil fatty acid diethanolamide, (C) stearic acid

[0048] (VII) (A) polyoxyethylene pentaerythritol tetrastearate, (B) coconut oil fatty acid methylethanolamide, (C) oleic acid

[0049] (VIII) (A) polyoxyethylene pentaerythritol tetrastearate, (B) coconut oil fatty acid methylethanolamide, (C) isostearic acid

[0050] (IX) (A) polyoxyethylene pentaerythritol tetrastearate, (B) coconut oil fatty acid methylethanolamide, (C) stearic acid.

[0051] The cleaning agent composition of the present invention contains the cleaning agent thickener and a surfactant as an essential component of the cleaning agent.

[0052] The amount of the thickener for cleaning agents to be added is not particularly limited, but is, for example, preferably 0.5 to 10% by mass, more preferably 1 to 5% by mass, relative to the total amount of the cleaning agent composition.

[0053] As the surfactant used in the cleaning composition of the present invention, anionic surfactants and amphoteric surfactants are mainly used.

[0054] Examples of the anionic surfactant used as the main basic component of the cleaning composition of the present invention include: N-acyl (carbon number 8 to 24) amino acid salts, such as sodium lauroyl alanine, potassium lauroyl alanine, triethanolamine lauroyl alanine, sodium cocoyl alanine, sodium lauroyl aspartate, potassium lauroyl aspartate, sodium cocoyl glutamate, sodium lauroyl glutamate, etc.; N-acyl (carbon number 8 to 24) sarcosinates, such as sodium lauroyl sarcosinate, potassium lauroyl sarcosinate, triethanolamine lauroyl sarcosinate, sodium stearoyl sarcosinate, etc.; N-acyl (carbon number 8 to 24) methyl taurine salts, such as sodium stearoyl methyl taurate, sodium coconut oil fatty acid methyl taurate, etc. Any one or more of these anionic surfactants can be used, and N-acyl methyl taurate is preferred from the perspective of low irritation.

[0055] Furthermore, in order to improve the cleaning power and foaming power, alkyl (carbon number 8-24) sulfates, alkyl (carbon number 8-24) ether sulfates, alkyl (carbon number 8-24) benzene sulfonates, alkyl (carbon number 8-24) phosphates, polyoxyalkylene alkyl (carbon number 8-24) ether phosphates, alkyl (carbon number 8-24) sulfosuccinates, polyoxyalkylene alkyl (carbon number 8-24) ether sulfosuccinates, α-sulfo fatty acid ester salts, ether carboxylates, polyoxyalkylene fatty acid monoethanolamide sulfates, long-chain (carbon number 8-24) carboxylates, etc. may be used in combination.

[0056] In the cleaning composition of the present invention, the content of the anionic surfactant is 1 to 20% by mass, preferably 3 to 15% by mass, and particularly preferably 5 to 10% by mass, based on the total amount of the composition.

[0057] Examples of the amphoteric surfactant include alkyl (8 to 24 carbon atoms) amidopropyl betaine, alkyl (8 to 24 carbon atoms) carboxybetaine, alkyl (8 to 24 carbon atoms) sulfobetaine, alkyl (8 to 24 carbon atoms) hydroxysulfobetaine, alkyl (8 to 24 carbon atoms) amidopropyl hydroxysulfobetaine, alkyl (8 to 24 carbon atoms) hydroxyphosphobetaine, alkyl (8 to 24 carbon atoms) aminocarboxylates, alkyl (8 to 24 carbon atoms) imidazolinium betaine, alkyl (8 to 24 carbon atoms) amine oxides, and alkyl (8 to 24 carbon atoms) phosphates containing tertiary nitrogen and quaternary nitrogen.

[0058] In the cleaning composition of the present invention, the content of the amphoteric surfactant is 1 to 10% by mass, preferably 2 to 8% by mass, and particularly preferably 3 to 6% by mass, based on the total amount of the composition.

[0059] Preferred combinations of the anionic surfactant and the amphoteric surfactant are not limited thereto, and examples thereof include the following combinations:

[0060] (i) Sodium methyl taurate of coconut oil fatty acid and alkyl (carbon number 8 to 24) amidopropyl betaine (cocoamidopropyl betaine, etc.)

[0061] (ii) Sodium methyl taurine of coconut oil fatty acid and alkyl (carbon number 8 to 24) carboxy betaine (coconut oil alkyl betaine, etc.)

[0062] (iii) Sodium methyl taurine of coconut oil fatty acid and alkyl (carbon number 8 to 24) imidazoline betaine (sodium lauroyl amphoacetate, etc.)

[0063] (iv) Sodium cocoyl glutamate and alkyl (carbon number 8 to 24) amidopropyl betaine (cocoamidopropyl betaine, etc.)

[0064] (v) Sodium cocoyl glutamate and alkyl (carbon number 8 to 24) carboxy betaine (coconut oil alkyl betaine, etc.)

[0065] (vi) Sodium cocoyl glutamate and alkyl (having 8 to 24 carbon atoms) imidazoline betaine (sodium lauroyl amphoacetate, etc.).

[0066] The cleaning composition of the present invention can be prepared by combining the preferred combinations (I) to (XI) of the components (A) to (C) in the thickener for cleaning agents of the present invention with the preferred combinations (i) to (vi) of the anionic surfactant and the amphoteric surfactant.

[0067] The cleaning composition of the present invention may contain a nonionic surfactant as required. Examples of the nonionic surfactant include alkanolamides, glycerol fatty acid esters, polyoxyalkylene alkyl ethers, polyoxyalkylene glycol ethers, polyoxyalkylene sorbitan fatty acid esters, sorbitan fatty acid esters, polyoxyalkylene sorbitol fatty acid esters, sorbitol fatty acid esters, polyoxyalkylene glycerol fatty acid esters, polyoxyalkylene fatty acid esters, polyoxyalkylene alkylphenyl ethers, tetrapolyoxyalkylene ethylenediamine condensates, sucrose fatty acid esters, polyoxyalkylene fatty acid amides, polyoxyalkylene glycol fatty acid esters, polyoxyalkylene castor oil derivatives, polyoxyalkylene solidified castor oil derivatives, alkyl polyglycosides, polyglycerol fatty acid esters, and the like.

[0068] In addition, other components in the cleaning composition of the present invention are not particularly limited, and components generally used in cleaning compositions can be mixed as arbitrary components. Examples of other components that can be mixed are shown below.

[0069] The cleaning composition of the present invention may contain anionic polymers, cationic polymers, nonionic polymers, and amphoteric polymers.

[0070] Examples of anionic polymers include acrylic acid derivatives (polyacrylic acid and its salts, acrylic acid-acrylamide-ethyl acrylate copolymers and their salts, etc.), methacrylic acid derivatives (polymethacrylic acid and its salts, methacrylic acid-acrylamide-diacetoneacrylamide-alkyl acrylate-alkyl methacrylate copolymers and their salts, etc.), crotonic acid derivatives (vinyl acetate-crotonic acid copolymers, etc.), maleic acid derivatives (maleic anhydride-diisobutylene copolymers, isobutylene-maleic acid copolymers, etc.), polyglutamic acid and its salts, hyaluronic acid and its salts, carboxymethyl cellulose, carboxyvinyl polymers, etc.

[0071] Examples of cationic polymers include quaternary nitrogen-modified polysaccharides (cationically modified cellulose derivatives, cationically modified guar gum, cationically modified locust bean gum, cationically modified tamarind gum, cationically modified tara gum, cationically modified starch, etc.), dimethyldiallylammonium chloride derivatives (dimethyldiallylammonium chloride-acrylamide copolymer, polydimethylmethylenepiperidinium chloride, etc.), vinylpyrrolidone derivatives (vinylpyrrolidone-dimethylaminoethyl methacrylate copolymer salt, vinylpyrrolidone-methacrylamidepropyltrimethylammonium chloride copolymer, vinylpyrrolidone-methylvinyl imidazole chloride copolymer, etc.), methacrylic acid derivatives (methacryloylethyldimethylbetaine-methacryloylethyltrimethylammonium chloride-2-hydroxyethyl methacrylate copolymer, methacryloylethyldimethylbetaine-methacryloylethyltrimethylammonium chloride-methoxypolyethylene glycol methacrylate polymer, etc.), and the like.

[0072] Examples of nonionic polymers include acrylic acid derivatives (hydroxyethyl acrylate-methoxyethyl acrylate copolymer, polyacrylic acid amide, etc.), vinyl pyrrolidone derivatives (polyvinyl pyrrolidone, vinyl pyrrolidone-vinyl acetate copolymer, etc.), polyoxyalkylene glycol derivatives (polyethylene glycol, polypropylene glycol, etc.), cellulose derivatives (methyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, etc.), polysaccharides and their derivatives (guar gum, locust bean gum, dextran, etc.), etc.

[0073] Examples of amphoteric polymers include amphoteric starch, dimethyldiallylammonium chloride derivatives (acrylamide-acrylic acid-dimethyldiallylammonium chloride copolymers, acrylic acid-dimethyldiallylammonium chloride copolymers, etc.), methacrylic acid derivatives (polymethacryloylethyldimethylbetaine, N-methacryloyloxyethyl N,N-dimethylammonium-α-methylcarboxybetaine and methacrylate alkyl ester copolymers, etc.), etc.

[0074] The cleaning composition of the present invention may contain a silicone component. As the silicone component, silicone rubber, silicone oil, or functional group-modified silicone may be contained. Specific examples thereof include dimethyl polysiloxane, amino-modified silicone, polyether-modified silicone, alkyl-modified silicone, cyclic silicone, and fluorine-modified silicone.

[0075] The cleaning composition of the present invention may further contain oil, pearlescent agent and suspending agent.

[0076] Examples of the oil component include olive oil, jojoba oil, liquid paraffin, fatty acid alkyl esters, etc. Examples of the pearlescent agent include fatty acid glycol, etc., and examples of the suspending agent include polystyrene emulsions, etc.

[0077] In addition, other components that can be formulated in the cleaning composition of the present invention include: cationic surfactants, pH adjusters (citrate, lactic acid, glutamic acid, glycolic acid, etc.), solubilizers (ethanol, ethylene glycol, propylene glycol, etc.), moisturizers (glycerin, trehalose, sorbitol, maltitol, dipropylene glycol, etc., 1,3-butylene glycol, sodium hyaluronate, etc.), antioxidants, higher alcohols, higher fatty acids, thickeners, metal chelating agents (ethylenediaminetetraacetate, etc.), ultraviolet absorbers, bactericides, preservatives, pigments, fragrances, foam enhancers, etc.

[0078] The cleaning composition of the present invention can be prepared by dissolving or dispersing the above-mentioned components in water as a solvent. The amount of water to be prepared is not particularly limited, but is, for example, 60 to 90% by mass relative to the total amount of the cleaning composition.

[0079] The dosage form of the cleaning agent composition of the present invention is preferably a liquid cleaning agent, a gel cleaning agent, or a jelly cleaning agent, and more preferably a liquid cleaning agent or a gel cleaning agent. Specifically, facial cleansers, body washes, shampoos, hand soaps, shaving agents, laundry detergents, and the like are mentioned.

[0080] Furthermore, by using the thickening agent for cleaning agents of the present invention, it is expected that the amount of anionic surfactants that are difficult to thicken in the cleaning agent composition can be increased (concentration can be increased), and thus it is expected that a concentrated cleaning agent composition can be provided. Example

[0081] Next, the present invention will be described more specifically and in detail by way of examples and comparative examples, but the present invention is not limited to these examples. In addition, the blending amounts described below are all in mass %.

[0082] Shampoo formulations were prepared using the formulations described in Tables 1 to 3. (The pH was adjusted to an appropriate value using citric acid or sodium citrate.) The formulation viscosities of these prepared formulations were measured.

[0083] In addition, the details of the components represented by abbreviations in the tables are as follows.

[0084] AMT: Sodium Cocoyl Methyl Taurate (Neoscopy (registered trademark) CN-30 manufactured by Toho Chemical Industry Co., Ltd.)

[0085] CAB: Cocamidopropyl betaine (Ovazolin (registered trademark) CAB-30 manufactured by Toho Chemical Industry Co., Ltd.)

[0086] CME: Coconut oil fatty acid monoethanolamide (Toho Chemical Industry Co., Ltd. Toho (registered trademark) N-120)

[0087] DEA: Coconut oil fatty acid diethanolamide (Toho Chemical Industry Co., Ltd. Tohoul (registered trademark) N-220XM)

[0088] PETS: Polyoxyethylene (150 mol) pentaerythritol tetrastearate

[0089] Description of evaluation method

[0090] <Viscosity test>

[0091] The viscosity of the cleaning composition was measured at 25° C. using a B-type viscometer (Bismetron viscometer VS-A1, manufactured by Shibaura Systems Co., Ltd.) with the rotation speed fixed at 12 rpm for rotors 1 to 4. The pH was adjusted to 5.0 with citric acid.

[0092] [Table 1]

[0093]

[0094] *1: Total amount of cleaning agent basic components and thickener components (mass %)

[0095] *2: Adjusted so that the total of the cleaning agent basic components and thickener components is 100% by mass (including citric acid for pH adjustment)

[0096] [Table 2]

[0097]

[0098] *1: Total amount of cleaning agent basic components and thickener components (mass %)

[0099] *2: Adjusted so that the total of the cleaning agent basic components and thickener components is 100% by mass (including citric acid for pH adjustment)

[0100] [Table 3]

[0101]

[0102] *1: Total amount of cleaning agent basic components and thickener components (mass %)

[0103] *2: Adjusted so that the total of the cleaning agent basic components and thickener components is 100% by mass (including citric acid for pH adjustment)

[0104] The total amount of surfactants (the total amount of the basic components of the cleaning agent and the thickener component) of each formula is adjusted to 10.0 to 15.0% by mass relative to the total mass of the cleaning agent composition (shampoo formula). By comparing the example group and the comparative example group, it can be seen that the thickener of the example group shows the effect of giving a practical viscosity (300 to 6000 mPa·s) as a liquid cleaning agent to the formula of sodium cocoyl methyl taurate and cocamidopropyl betaine, which are anionic surfactants that are difficult to thicken. In addition, in the example group, the thickener component can be quickly and evenly mixed and dissolved to prepare the cleaning agent composition, and the obtained cleaning agent composition foams well. That is, the cleaning agent composition of the example group has the basic performance as a cleaning agent, and the foaming property and solubility will not be significantly deteriorated. In contrast, in comparative examples 2 to 5 in which only (A) component PETS is deployed as a thickener component, there is almost no thickening effect when its deployment amount is less than 1.5% by mass, and it is sharply thickened when it exceeds 2.0% by mass. In Comparative Examples 6 to 10 and 12 to 16, which lack any one of the components (A) to (C) as a thickener component, there was no thickening effect at all or sufficient viscosity could not be imparted. In addition, even when all the components (A) to (C) as thickener components were included, if the prescribed blending ratio was not satisfied, for example, in Comparative Example 11, in which the component (C) exceeded the prescribed amount, the thickening property became too high and a practical viscosity could not be obtained.

Claims

1. A cleaning agent composition comprising an anionic surfactant and a thickener for a cleaning agent, wherein the thickener for a cleaning agent comprises: 40 to 80% by mass of a fatty acid ester (A) of polyoxyalkylene pentaerythritol represented by the following general formula (1), In the formula, R 1 ~R 4 Each independently represents a fatty acid residue having 11 to 23 carbon atoms, AO or OA represents an oxyalkylene group having 2 to 4 carbon atoms, and p, q, r and s are integers satisfying the relationship of 20≤p+q+r+s≤300; 10 to 50% by mass of fatty acid alkanolamide (B); and 2 to 30% by mass of a higher fatty acid having 12 to 24 carbon atoms (C), in, The anionic surfactant is selected from one or two of N-acylamino acid salts and N-acylmethyltaurine salts.

2. The cleaning composition according to claim 1, wherein The N-acyl amino acid salt is N-acyl sarcosinate.

3. The cleaning composition according to claim 1, wherein The anionic surfactant is N-acylmethyl taurate. 4 . The cleaning composition according to claim 1 , further comprising an amphoteric surfactant.

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