Surfactant compositions and detergents

Abstract

To provide a surfactant composition that produces fine bubbles, and a detergent containing the above surfactant composition that has excellent foam retention and suppressed irritating odor. [Solution] A surfactant composition comprising an alkyl hydroxy ether acetate (salt) (A) represented by the following general formula (1), and a compound (I) detected during a retention time of 10 to 17 minutes in gas chromatography using petroleum ether in accordance with JIS K8593, wherein the ratio of the peak area of ​​compound (I) to the peak area of ​​the petroleum ether measured by gas chromatography is 0.02 to 50%. R 1 -CH(OH)-CH2-OCH2COOM 1 (1) [In general formula (1), R 1 represents an alkyl group with 8 to 12 carbon atoms, M 1 [This represents a hydrogen atom, a sodium atom, a potassium atom, or triethanolammonium.]

Description

[Technical Field]

[0001] The present invention relates to surfactant compositions and detergents. [Background technology]

[0002] Cleansing agents for human skin and hair use surfactants such as anionic surfactants. Patent Document 1 discloses a cleansing agent that contains a surfactant composition including sodium dodecyl hydroxyether acetate, etc., which has excellent cleansing power against sebum and moisturizing properties after cleansing. [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] International Publication No. 2024 / 009754 [Overview of the project] [Problems that the invention aims to solve]

[0004] However, the surfactant composition containing sodium dodecyl hydroxyether acetate, etc., described in Patent Document 1 had room for further improvement in the fineness of its foam. Furthermore, the detergent described in Patent Document 1 had room for further improvement in the persistence of its foam and further suppression of its irritating odor.

[0005] The present invention aims to provide a surfactant composition that exhibits excellent foam fineness, and a detergent containing the above-mentioned surfactant composition that exhibits excellent foam persistence and suppresses irritating odor. [Means for solving the problem]

[0006] The inventors of this invention arrived at this present invention as a result of diligent research to achieve the above objective. In other words, the present invention relates to a surfactant composition containing an alkyl hydroxyether acetate (salt) (A) represented by the following general formula (1) and a compound (I) detected during a retention time of 10 to 17 minutes in gas chromatography using petroleum ether in accordance with JIS K8593, wherein the ratio of the peak area of ​​compound (I) to the peak area of ​​petroleum ether measured by gas chromatography is 0.02 to 50%, and a detergent containing the above surfactant composition. R 1 -CH(OH)-CH2-OCH2COOM 1 (1) [In general formula (1), R 1 represents an alkyl group with 8 to 12 carbon atoms, M 1 [This represents a hydrogen atom, a sodium atom, a potassium atom, or triethanolammonium.] [Effects of the Invention]

[0007] The surfactant composition of the present invention exhibits excellent fineness of foam. Furthermore, because the detergent of the present invention contains the surfactant composition of the present invention, it exhibits excellent foam persistence and suppresses irritating odor. [Modes for carrying out the invention]

[0008] The present invention will be described in detail below.

[0009] <Alkyl hydroxyether acetate (salt) (A)> The surfactant composition of the present invention contains alkyl hydroxy ether acetate (salt) (A) represented by general formula (1) as alkyl hydroxy ether acetate (salt) (A). R 1 -CH(OH)-CH2-OCH2COOM 1 (1) [In the formula, R 1 represents an alkyl group with 8 to 12 carbon atoms, M 1 [This represents a hydrogen atom, a sodium atom, a potassium atom, or triethanolammonium.]

[0010] In this specification, alkyl hydroxy ether acetic acid (salt) (A) means alkyl hydroxy ether acetic acid (A) and / or alkyl hydroxy ether acetate (A). In this specification, alkyl hydroxy ether acetic acid (salt) (A) can also be referred to as alkyl hydroxy ether acetic acid or its salt (A).

[0011] In general formula (1), R 1 represents an alkyl group having 8 to 12 carbon atoms. Examples of the alkyl group having 8 to 12 carbon atoms include n-octyl group, isooctyl group, 2-ethylhexyl group, n-nonyl group, isononyl group, n-decyl group, isodecyl group, undecyl group, n-dodecyl group, isododecyl group, and the like. R 1 From the viewpoints of foaming property and detergency against sebum, it is preferably an alkyl group having 8 to 10 carbon atoms, more preferably an alkyl group having 10 carbon atoms, and particularly preferably an n-decyl group. R 1 is preferably a linear alkyl group having 8 to 12 carbon atoms.

[0012] In general formula (1), M 1 is a hydrogen atom, a sodium atom, a potassium atom or triethanolammonium. M 1 Among them, from the viewpoints of foaming property and detergency against sebum, it is preferably a sodium atom or triethanolammonium, and more preferably a sodium atom.

[0013] Specific examples of alkyl hydroxyether acetate (A) represented by general formula (1) include decyl hydroxyether acetate (2-hydroxydecyl acetate), isodecyl hydroxyether acetate (2-hydroxyisodecyl acetate), ethyl octyl hydroxyether acetate (2-hydroxyethyloctyl acetate), undecyl hydroxyether acetate (2-hydroxyundecyl acetate), isoundecyl hydroxyether acetate (2-hydroxyisoundecyl acetate), dodecyl hydroxyether acetate (2-hydroxydodecyl acetate), isododecyl hydroxyether acetate (2-hydroxyisododecyl acetate), tridecyl hydroxyether acetate (2-hydroxytridecyl acetate), tetradecyl hydroxyether acetate (2-hydroxytetradecyl acetate), and isotetradecyl hydroxyether acetate (2-hydroxyisotetradecyl acetate).

[0014] Specific examples of the alkyl hydroxy ether acetate (A) represented by the general formula (1) include sodium decyl hydroxy ether acetate, sodium isodecyl hydroxy ether acetate, sodium ethyl octyl hydroxy ether acetate, sodium undecyl hydroxy ether acetate, sodium isoundecyl hydroxy ether acetate, sodium dodecyl hydroxy ether acetate, sodium isododecyl hydroxy ether acetate, sodium tridecyl hydroxy ether acetate, sodium tetradecyl hydroxy ether acetate, sodium isotetradecyl hydroxy ether acetate, potassium decyl hydroxy ether acetate, potassium isodecyl hydroxy ether acetate, potassium ethyl octyl hydroxy ether acetate, potassium undecyl hydroxy ether acetate, potassium isoundecyl hydroxy ether acetate, potassium dodecyl hydroxy ether acetate, potassium isododecyl hydroxy ether acetate, potassium tridecyl hydroxy ether acetate, potassium tetradecyl hydroxy ether acetate, potassium isotetradecyl hydroxy ether acetate, triethanolammonium decyl hydroxy ether acetate, triethanolammonium isodecyl hydroxy ether acetate, triethanolammonium ethyl octyl hydroxy ether acetate, triethanolammonium undecyl hydroxy ether acetate, triethanolammonium isoundecyl hydroxy ether acetate, triethanolammonium dodecyl hydroxy ether acetate, triethanolammonium isododecyl hydroxy ether acetate, triethanolammonium tridecyl hydroxy ether acetate, triethanolammonium tetradecyl hydroxy ether acetate, and triethanolammonium isotetradecyl hydroxy ether acetate. In the surfactant composition of the present invention, only one kind of the alkyl hydroxy ether acetic acid (salt) (A) may be used alone, or two or more kinds may be used in combination.

[0015] As the alkyl hydroxy ether acetic acid (salt) (A) represented by the general formula (1), from the viewpoint of detergency against sebum, an alkyl hydroxy ether acetate represented by the general formula (1) is preferable, and more preferably sodium decyl hydroxy ether acetate, sodium dodecyl hydroxy ether acetate, sodium tetradecyl hydroxy ether acetate, triethanolammonium decyl hydroxy ether acetate, triethanolammonium dodecyl hydroxy ether acetate, and triethanolammonium tetradecyl hydroxy ether acetate. Particularly preferred are sodium decyl hydroxy ether acetate and sodium dodecyl hydroxy ether acetate, and most preferred is sodium dodecyl hydroxy ether acetate.

[0016] The alkyl hydroxy ether acetic acid (salt) (A) represented by the general formula (1) can be obtained by a known method described in JP-A-2017-197732 and the like. Specifically, 1.04 mol of sodium monochloroacetate is added to 1 mol of a 1,2-diol having 10 to 14 carbon atoms, and preferably at 30 to 80 °C, more preferably at 50 to 70 °C, to obtain an aqueous solution containing crude sodium alkyl hydroxy ether acetate by an SN2 reaction. Then, by adding hydrochloric acid, an aqueous surfactant solution containing alkyl hydroxy ether acetic acid (A) can be obtained.

[0017] Furthermore, an aqueous surfactant solution containing an alkyl hydroxy ether acetate (A) can be obtained by neutralizing the obtained aqueous surfactant solution containing alkyl hydroxy ether acetic acid (A) with an alkaline compound such as sodium hydroxide, potassium hydroxide, and triethanolamine.

[0018] The aqueous surfactant solution containing alkyl hydroxy ether acetic acid (salt) (A) may be used as it is in the production of the surfactant composition of the present invention, or a powder containing alkyl hydroxy ether acetic acid (salt) (A) obtained by removing the solvent from the aqueous surfactant solution by a known method such as an evaporator may be used in the production of the surfactant composition of the present invention, or an aqueous surfactant solution containing alkyl hydroxy ether acetic acid (salt) (A) and a powder containing alkyl hydroxy ether acetic acid (salt) (A) may be mixed and used in the production of the surfactant composition of the present invention.

[0019] The molecular structure of alkyl hydroxy ether acetic acid (salt) (A) (including the type of cation constituting alkyl hydroxy ether acetate (A)) can be specified by performing analysis using a liquid chromatograph / time-of-flight mass spectrometer (LC-TOF-MS) according to the <LC-TOF-MS measurement conditions> described below.

[0020] <LC-TOF-MS measurement conditions> · Apparatus: Xevo G2-XS (manufactured by Waters) · Analytical column: Scherzo SM-C18 (3μm, 2mm×100mm) (manufactured by Intakt) · Column temperature: 40°C · Mobile phase A: Methanol · Mobile phase B: 10 mM ammonium acetate aqueous solution / methanol (80 / 20) · Flow rate: 0.3 mL / min · Sample injection volume: 0.8 μL · Gradient conditions: 0 - 1 minute: A 60% → 4 - 5 minutes: A 80% → 9 - 16 minutes: A 98% → 16.1 - 21 minutes: A 60% · Detector: MS · Ion source: ESI(±) · Source temperature: 140°C · Desolvation temperature: 600°C · Desolvation gas flow rate: 1000 L / h · Sample adjustment conditions: Dilute 1000-fold with methanol

[0021] In this specification, the content of alkylhydroxyether acetate (salt) (A) is a value measured using high-performance liquid chromatography (hereinafter sometimes abbreviated as HPLC) according to the <HPLC measurement conditions for alkylhydroxyether acetate (salt) (A)> described later.

[0022] <HPLC measurement conditions for alkylhydroxyether acetate (salt) (A)> Equipment: Liquid chromatography (manufactured by Shimadzu Corporation) Detector: Differential refractometer Column: Capsule pack C18 SG 120S5 (inner diameter 4.6 nm, length 25 cm, manufactured by Osaka Soda Co., Ltd.) Column temperature: 40℃ Eluent: Mixture of 0.02 mol / L phosphoric acid, 0.01 mol / L sodium dihydrogen phosphate solution, and acetonitrile [53:47 (volume ratio)] Flow rate: 0.8mL / min Sample concentration: 8 mg / mL Sample injection volume: 25 μL Retention time of alkyl hydroxy ether acetate (salt) (A): 19.0-22.5 minutes

[0023] <Compound (I)> The surfactant composition of the present invention contains compound (I) (hereinafter also referred to simply as compound (I) in this specification) which is detected during a retention time of 10 to 17 minutes in gas chromatography using petroleum ether in accordance with JIS K8593.

[0024] Compounds included in compound (I) include organic solvents used in the production of the alkylhydroxyether acetate (salt) (A) mentioned above, as well as impurities and by-products contained in the raw materials. More specifically, examples include aromatic hydrocarbons, ketones, esters, alcohols, ethers, amides, sulfoxides, aldehydes, etc. Examples of aromatic hydrocarbons include toluene and xylene, with toluene being preferred. Examples of ketones include acetone, hydroxyacetone, methyl ethyl ketone (2-butanone), 2-pentanone, 2-hexanone, methyl amyl ketone (2-heptanone), 2-octanone, 2-nonanone, 2-decanone, 2-undecanone, and 2-dodecanone, with acetone and methyl ethyl ketone being preferred. Examples of esters include ethyl acetate and butyl acetate, with ethyl acetate being preferred. Examples of alcohols include benzyl alcohol, isopropanol, methanol, and ethanol, with benzyl alcohol being preferred. Examples of ethers include tetrahydrofuran (THF), diethyl ether, and methyl tert-butyl ether (MTBE), with tetrahydrofuran and diethyl ether being preferred. Examples of amides include N,N-dimethylformamide (DMF). Examples of sulfoxides include dimethyl sulfoxide (DMSO). Examples of aldehydes include acetaldehyde, propionaldehyde, isobutyraldehyde, benzaldehyde, propanal, butanal, pentanal, hexanal, heptanal, octanal, nonanal, decanal, undecanal, dodecanal, tetradecanal, hexadecanal, formaldehyde, glycolaldehyde, etc., with benzaldehyde, nonanal, decanal, and dodecanal being preferred. In this specification, compound (I) may contain at least one of the compounds described above, and may also contain a combination of two or more compounds. If compound (I) contains a combination of two or more compounds described above, compound (I) may also be called compound group (I). Many of the compounds mentioned above have a pungent odor. In this specification, compound (I) may also be referred to as an odor component or a volatile component.

[0025] In one embodiment of the present invention, compound (I) preferably contains at least one selected from the group consisting of aromatic hydrocarbons, ketones, esters, alcohols, ethers, amides, sulfoxides, and aldehydes; more preferably contains at least one selected from the group consisting of aromatic hydrocarbons, alcohols, and aldehydes; and even more preferably contains at least one selected from the group consisting of toluene, benzyl alcohol, benzaldehyde, nonanal, decanal, and dodecanal. In another embodiment of the present invention, compound (I) preferably comprises alcohols and / or aldehydes, and more preferably comprises at least one selected from the group consisting of benzyl alcohol, benzaldehyde, nonanal, decanal, and dodecanal. Furthermore, in another embodiment of the present invention, compound (I) preferably contains at least one selected from the group consisting of aromatic hydrocarbons, ketones, esters, alcohols, ethers, amides, and sulfoxides, and more preferably contains at least one selected from the group consisting of toluene, xylene, acetone, methyl ethyl ketone, ethyl acetate, benzyl alcohol, isopropanol, methanol, ethanol, tetrahydrofuran, diethyl ether, N,N-dimethylformamide, and dimethyl sulfoxide. In this specification, when it is stated that "compound (I) contains compound a (where compound a represents a specific compound name)," compound (I) is not required to consist solely of compound a. In other words, compound (I) may contain other compounds (compounds listed as specific examples of compound (I)) in addition to compound a.

[0026] <Surfactant composition> The surfactant composition of the present invention contains alkyl hydroxy ether acetate (salt) (A) and compound (I) detected during a retention time of 10 to 17 minutes in gas chromatography using petroleum ether in accordance with JIS K8593, wherein the ratio of the peak area of ​​compound (I) to the peak area of ​​petroleum ether measured by gas chromatography is 0.02 to 50%.

[0027] In the surfactant composition of the present invention, the ratio of the peak area of ​​compound (I) to the peak area of ​​petroleum ether, as measured by gas chromatography using petroleum ether in accordance with JIS K8593 (hereinafter also referred to as the compound (I) / petroleum ether peak area ratio in this specification), is not particularly limited as long as it is between 0.02 and 50%, but is preferably between 0.02 and 20%, and more preferably between 0.02 and 10%. If the compound (I) / petroleum ether peak area ratio exceeds 50%, the fineness of the foam may be insufficient. The surfactant composition of the present invention has a compound (I) / petroleum ether peak area ratio of 0.02 to 50%, and therefore exhibits excellent foam fineness. The mechanism by which the fineness of the foam is improved by setting the compound (I) / petroleum ether peak area ratio to 0.02 to 50% in the surfactant of the present invention is not clear. However, since compound (I) is a highly volatile component, it is believed that by limiting the peak area ratio of compound (I) / petroleum ether to 0.02-50%, the volatilization of compound (I) at the interface between air and liquid when the surfactant of the present invention foams will be suppressed, and the interfacial stability between air and liquid will be more easily maintained. As a result, it is estimated that the bubbles will be less likely to break down and the fineness of the bubbles will improve.

[0028] In this specification, "gas chromatography using petroleum ether in accordance with JIS K8593" specifically refers to gas chromatography performed in accordance with the <Method for Measurement of Gas Chromatography> described later. Furthermore, in this specification, the peak area ratio of compound (I) / petroleum ether is the value calculated by the method described in <Method for Calculating the Peak Area Ratio of Compound (I) / Petroleum Ether> described later.

[0029] <Method for calculating the peak area ratio of compound (I) / petroleum ether> The surfactant composition is used as a sample, and the peak area of ​​petroleum ether and the peak area of ​​compound (I) are measured by gas chromatography using petroleum ether in accordance with JIS K8593. The gas chromatography measurement method is as described in <Gas Chromatography Measurement Method> below.

[0030] <Method of measurement using gas chromatography> (How to prepare the sample) Place 10g of the sample in a 100mL screw-top tube, add 5mL of ethanol (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) and 10mL of petroleum ether (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd., conforming to JIS K8593). Add a stirrer piece, stir at 500rpm at room temperature for 1 minute, then let stand for 10 minutes, and collect the upper layer as a sample. Using the collected samples, the peak areas of petroleum ether and compound (I) are measured according to the gas chromatography measurement conditions described later.

[0031] (Measurement conditions for gas chromatography) Equipment: High-performance general-purpose gas chromatograph (Shimadzu Corporation, GC-2014) Column: Ultra2 (manufactured by GL Sciences Co., Ltd., inner diameter: 0.2 mm, length: 25 m, film thickness: 0.11 μm) Carrier gas: Helium Injector temperature: 280℃ Detector temperature: 310℃ Temperature program: Heat from 50°C to 200°C at a rate of 5°C / min, then heat to 280°C at a rate of 10°C / min. Sample injection volume: 10 μL Detector: Flame ionization detector (FID) Retention time of compound (I): 10-17 minutes Petroleum ether retention time: 1.4-1.8 minutes

[0032] From the measured peak areas of petroleum ether and compound (I), the peak area ratio of compound (I) to petroleum ether (in %) is calculated using the following formula. Ratio of peak area of ​​compound (I) / petroleum ether = (peak area of ​​compound (I) × 100) / peak area of ​​petroleum ether

[0033] Petroleum ether conforming to JIS K8593 mainly contains aliphatic hydrocarbons with 3 to 8 carbon atoms (e.g., pentane, isopentane, hexane, etc.). In this specification, "petroleum ether peak area" means the sum of the individual peak areas of multiple compounds (e.g., pentane, isopentane, hexane, etc.) contained in the petroleum ether, as measured by gas chromatography using petroleum ether conforming to JIS K8593. In this specification, "peak area of ​​compound (I)" means the sum of the peak areas of all compounds contained in compound (I) detected during a retention time of 10 to 17 minutes in the gas chromatography using petroleum ether in accordance with JIS K8593.

[0034] In the surfactant composition of the present invention, the content of alkyl hydroxyether acetate (salt) (A) is not particularly limited, but from the viewpoint of foam fineness and storage stability, it is preferably 5 to 95% by weight, and more preferably 10 to 90% by weight, relative to the total weight of the active ingredients of the surfactant composition. In this specification, the term "active ingredient" refers to the component obtained by removing water from the raw materials of each component. In this specification, the term "active ingredient" may also be referred to as "solid content."

[0035] The surfactant composition of the present invention can be obtained by mixing an aqueous surfactant solution or powder containing alkyl hydroxyether acetate (salt) (A) with any other component described later, such that the ratio of the peak area of ​​compound (I) to the peak area of ​​the petroleum ether, as measured by gas chromatography using petroleum ether in accordance with JIS K8593, falls within the above range. Compound (I) is usually contained in the aqueous surfactant solution or powder containing alkyl hydroxyether acetate (salt) (A). In the surfactant composition of the present invention, there are no particular limitations on the method for adjusting the peak area ratio of compound (I) / petroleum ether to fall within the above range, but examples include a method in which, when producing the aqueous surfactant solution or powder containing alkyl hydroxyether acetate (salt) (A), water is added and volatile components are removed using a rotary evaporator multiple times (for example, 2 to 10 times, preferably 3 to 10 times).

[0036] The surfactant composition of the present invention may further contain any other components, and preferably contains water.

[0037] When the surfactant composition of the present invention contains water, from the viewpoint of fineness of foam and storage stability, the water content is preferably 50 to 90% by weight, and more preferably 60 to 85% by weight, based on the total weight of the surfactant composition. If the surfactant composition of the present invention contains water, the water may be the water used as the reaction solvent in the production of alkyl hydroxy ether acetate (salt) (A), or it may be tap water, purified water, hard water, soft water, natural water, deep-sea water, hot spring water, electrolyzed alkaline ionized water, electrolyzed acidic ionized water, ion-exchanged water, cluster water, etc., mixed with alkyl hydroxy ether acetate (salt) (A) so that the water content in the surfactant composition of the present invention is in a predetermined proportion.

[0038] Furthermore, the surfactant composition of the present invention may also contain some of the following ingredients found in the detergents described later: amphoteric surfactants, anionic surfactants other than alkyl hydroxy ether acetate (salt) (A) (hereinafter referred to as "other anionic surfactants"), cationic surfactants, nonionic surfactants, water, oily components, solvents, humectants, chelating agents, conditioning agents, thickeners, whitening agents, pH adjusters, cooling agents, colorants, UV scattering agents, UV absorbing agents, preservatives, and antioxidants. Furthermore, the surfactant composition of the present invention may also contain unreacted material and residue of the reaction catalyst from the synthesis of alkyl hydroxy ether acetate (salt) (A).

[0039] The surfactant composition of the present invention can be obtained by mixing alkyl hydroxy ether acetate (salt) (A) and water, if necessary, in a predetermined proportion using a known mixing device equipped with a stirring device such as a paddle-type stirring blade or a spiral stirring blade.

[0040] The surfactant composition of the present invention is preferable as a raw material for detergents because it produces fine bubbles.

[0041] <Cleaning agent> The detergent of the present invention is a detergent comprising the surfactant composition of the present invention. The detergent of the present invention contains alkyl hydroxy ether acetate (salt) (A), which is an essential component of the surfactant composition of the present invention. In this specification, "cleansing agent" refers to a cleansing agent for hair or skin (such as shampoo, facial cleanser, body soap, bar soap, makeup remover, and liquid soap).

[0042] In the detergent of the present invention, the content of the surfactant composition of the present invention is not particularly limited, but from the viewpoint of further improving the persistence of the foam of the detergent and further suppressing the irritating odor, it is preferably 0.1 to 10.0% by weight, and more preferably 0.5 to 3.0% by weight, relative to the total weight of the detergent.

[0043] In the detergent of the present invention, the content of alkylhydroxyether acetate (salt) (A) is not particularly limited, but from the viewpoint of cleaning power, it is preferably 0.01 to 9.0% by weight, and more preferably 0.01 to 2.5% by weight, relative to the total weight of the detergent.

[0044] The detergent of the present invention may contain any other components in addition to the surfactant composition of the present invention. Examples of any other components include known cosmetic components such as amphoteric surfactants, other anionic surfactants, cationic surfactants, nonionic surfactants, water, oily components, solvents, humectants, chelating agents, conditioning agents, thickeners, whitening agents, pH adjusters, cooling agents, colorants, UV scattering agents, UV absorbing agents, preservatives, and antioxidants.

[0045] Examples of amphoteric surfactants include alkyldimethyl acetate betaine, fatty acid amidopropyl betaine, alkylimidazolinium betaine, sulfobetaine-type amphoteric surfactants, and amphoteric amino acid-based surfactants.

[0046] Examples of alkyldimethyl acetate betaines include lauryldimethylaminoacetate betaine [also known as lauryl betaine], myristyldimethylaminoacetate betaine [also known as myristyl betaine], and stearyldimethylaminoacetate betaine [also known as stearyl betaine].

[0047] Examples of fatty acid amidopropyl betaines include lauric acid amidopropyl betaine [also known as lauramidopropyl betaine], myristate acid amidopropyl betaine [also known as myristamidopropyl betaine], isostearic acid amidopropyl betaine, and coconut oil fatty acid amidopropyl betaine [also known as cocamidopropyl betaine].

[0048] Examples of alkylimidazolinium betaines include 2-coconut oil fatty acid-N-hydroxyethyl-N-hydroxyethylimidazolinium betaine, N-lauroyl-N'-carboxymethyl-N'-hydroxyethylethylenediamine sodium [also known as sodium lauroamphoacetate], and N-coconut oil fatty acid acyl-N'-carboxymethyl-N'-hydroxyethylethylenediamine sodium [also known as sodium cocoamphoacetate].

[0049] Examples of sulfobetaine-type amphoteric surfactants include lauramidopropyl hydroxysultaine and cocamidopropyl hydroxysultaine.

[0050] Examples of amphoteric amino acid-based surfactants include sodium lauryl aspartate, sodium myristyl aspartate, sodium lauryl-β-aminopropionate, and sodium lauroyl methyl-β-alanine [also known as sodium lauroyl methylalanine].

[0051] Other anionic surfactants include ether carboxylic acids or their salts other than alkyl hydroxyether acetate (salt) (A) (hereinafter referred to as ether carboxylic acids or their salts), sulfate ester salts, sulfonates, phosphate ester salts, fatty acid salts, and acylated amino acid salts.

[0052] Examples of ether carboxylic acids or their salts include sodium polyoxyethylene (average degree of polymerization 4) lauryl ether carboxylate [also known as sodium polyoxyethylene (average degree of polymerization 4) lauryl ether acetate, sodium laureth-4 carboxylate], sodium polyoxyethylene (average degree of polymerization 6) lauryl ether carboxylate [also known as sodium laureth-6 carboxylate], sodium polyoxyethylene (average degree of polymerization 4) tridecyl ether carboxylate [also known as sodium trideceth-4 carboxylate], and sodium polyoxyethylene (average degree of polymerization 7) tridecyl ether carboxylate [also known as sodium trideceth-7 carboxylate].

[0053] Examples of sulfate ester salts include sodium lauryl sulfate [also known as sodium lauryl sulfate], sodium polyoxyethylene (average degree of polymerization 2) lauryl ether sulfate [also known as sodium laureth-2 sulfate], sodium polyoxyethylene (average degree of polymerization 3) lauryl ether sulfate [also known as sodium laureth-3 sulfate], polyoxyethylene (average degree of polymerization 3) lauryl ether sulfate triethanolamine [also known as TEA laureth-3 sulfate], sodium polyoxyethylene (average degree of polymerization 3) coconut oil fatty acid monoethanolamide sulfate [also known as PEG-3 coconut fatty acid amide MEA sulfate], and sodium polyoxyethylene (average degree of polymerization 3) alkyl (12-13 carbon atoms) ether sulfate [also known as (C12,C13) pareth-3 sulfate].

[0054] Examples of sulfonates include sodium olefin (C14-16) sulfonate [also known as sodium olefin (C14-16) sulfonate], sodium dodecylbenzenesulfonate [also known as sodium dodecylbenzenesulfonate], disodium lauryl sulfosuccinate (average degree of polymerization 2) [also known as laureth-2Na sulfosuccinate], disodium lauryl sulfosuccinate [also known as lauryl-2Na sulfosuccinate], and disodium lauroylethanolamide (average degree of polymerization 5) sulfosuccinate.

[0055] Examples of phosphate ester salts include sodium lauryl phosphate [also known as sodium lauryl phosphate] and sodium polyoxyethylene lauryl ether phosphate [also known as trilaureth-4 phosphate].

[0056] Examples of fatty acid salts include salts of myristic acid (sodium myristate [also known as myristate Na], potassium myristate [also known as myristate K], myristate triethanolamine [also known as myristate TEA], etc.), salts of lauric acid (sodium laurate [also known as laurate Na], potassium laurate [also known as laurate K], laurate triethanolamine [also known as laurate TEA], etc.), salts of stearic acid (sodium stearate [also known as stearate Na], stearate triethanolamine [also known as stearate TEA], etc.), and salts of palmitic acid (sodium palmitate [also known as palmitate Na] and palmitate triethanolamine [also known as palmitate TEA]).

[0057] Examples of acylated amino acid salts include potassium acylglycine (also known as cocoyl glycine K), sodium methyltaurate (also known as cocoyl methyltaurate Na), sodium sarcosinate (also known as cocoyl sarcosin Na), sodium lauroyl sarcosinate (also known as lauroyl sarcosin Na), triethanolamine sarcosinate (also known as acyl glutamate TEA), triethanolamine acyl-L-glutamate (also known as cocoyl glutamate TEA), sodium acyl-L-glutamate (also known as cocoyl glutamate Na), and triethanolamine lauroyl-L-glutamate (also known as lauroyl glutamate TEA).

[0058] Examples of cationic surfactants include quaternary ammonium salts and amine salts.

[0059] Examples of quaternary ammonium salts include stearyltrimethylammonium chloride [also known as steartrimonium chloride], behenyltrimethylammonium chloride [also known as behentrimonium chloride], distearyldimethylammonium chloride [also known as distearyldimonium chloride], and aminopropylethyldimethylammonium ethyl sulfate [also known as quaternium-33].

[0060] Examples of amine salts include diethylaminoethylamide lactate stearate [also known as stearamidoethyldiethylamine lactate] and dimethylaminoethylamide lactate behenate [also known as behenamidopropyldimethylamine lactate].

[0061] Examples of nonionic surfactants include alkylene oxide (C2-C8) adducts of C4-C24 alcohols, esters or ethers of C8-C24 fatty acids with alcohols or alkylene oxide (C2-C8) polymers, alkylene oxide adducts of higher fatty acid esters of polyhydric (dihydric-dechydric) alcohols, glycerin fatty acid esters, polyglycerin fatty acid esters, and fatty acid alkanolamides.

[0062] Alkylene oxide (C2-C8) adducts of C4-C24 alcohols include polyoxyethylene (average degree of polymerization 10) polyoxypropylene (average degree of polymerization 7) butyl ether [also known as PPG-7 Buteth-10], polyoxyethylene (average degree of polymerization 20) lauryl ether [also known as Laureth-20], polyoxyethylene (average degree of polymerization 20) oleyl ether [also known as Oleth-20], polyoxyethylene (average degree of polymerization 12) polyoxypropylene (average degree of polymerization 2) cetyl ether [also known as PPG-2 Ceteth-12], and mixtures of polyoxyethylene cetearyl ether and polyoxyethylene oleyl ether [also known as Ceteth-5].

[0063] Esters or ethers of fatty acids with 8 to 24 carbon atoms and alcohols or alkylene oxide (2 to 8 carbon atoms) polymers include: glyceryl monostearate [also known as glyceryl stearate], glyceryl monocaprylate [also known as glyceryl caprylate], glyceryl monomyristate [also known as glyceryl myristate], glyceryl monooleate [also known as glyceryl oleate], ethylene glycol monostearate [also known as glycol stearate], sorbitan monolaurate [also known as sorbitan laurate], sorbitan monopalmitate [also known as sorbitan palmitate], sorbitan monostearate [also known as sorbitan stearate], sorbitan monooleate [also known as sorbitan oleate], sorbitan coconut oil fatty acid, mono Examples include polyoxyethylene sorbitan oleate (average degree of polymerization 6) [also known as PEG-6 sorbitan oleate], polyoxyethylene stearyl ether (average degree of polymerization 20) [also known as steareth-20], polyoxyethylene glycol monostearate (average degree of polymerization 23) [also known as PEG-23 stearate], polyoxyethylene glycol distearate (average degree of polymerization 3) [also known as PEG-3 distearate], polyoxyethylene glycol distearate (average degree of polymerization 150) [also known as PEG-150 distearate], polyoxyethylene glycol distearate (average degree of polymerization 190) [also known as PEG-190 distearate], and hydrogenated castor oil (average degree of polymerization 60) [also known as PEG-60 hydrogenated castor oil].

[0064] Alkylene oxide adducts of higher fatty acid esters of polyhydric (dihydric to decadal) alcohols include those obtained by addition polymerization of polyethylene oxide (average degree of polymerization 6) to glycerol esters of caprylic acid and capric acid [also known as (caprylic / capric acid) PEG-6 glycerides], polyoxyethylene monolaurate (average degree of polymerization 10) sorbitan [also known as PEG-10 sorbitan laurate], polyoxyethylene monolaurate (average degree of polymerization 80) sorbitan [also known as PEG-80 sorbitan laurate], polyoxyethylene monooleate (average degree of polymerization 6) sorbitan [also known as PEG-6 sorbitan oleate], polyoxyethylene monooleate (average degree of polymerization 3) sorbitan [ Examples include: PEG-3 sorbitan oleate (also known as PEG-3 sorbitan oleate), polyoxyethylene monooleate (average degree of polymerization 40) sorbitan (also known as PEG-40 sorbitan oleate), polyoxyethylene monostearate (average degree of polymerization 6) sorbitan (also known as PEG-6 sorbitan stearate), polyoxyethylene monostearate (average degree of polymerization 40) sorbitan (also known as PEG-40 sorbitan stearate), polyoxyethylene triisostearate (average degree of polymerization 160) sorbitan (also known as PEG-160 sorbitan triisostearate), and polyoxyethylene (degree of polymerization 120) dioleate methyl glucoside (also known as PEG-120 methyl glucose dioleate).

[0065] Examples of polyglycerin fatty acid esters include decaglyceryl monooleate [also known as polyglyceryl-10 oleate], decaglyceryl monolaurate [also known as polyglyceryl-10 laurate], decaglyceryl isostearate [also known as polyglyceryl-10 isostearate], polyglyceryl distearate [also known as polyglyceryl-10 distearate], polyglyceryl stearate [also known as polyglyceryl-10 stearate], hexaglyceryl polyricinoleate [also known as polyglyceryl-6 polyricinoleate], and diglyceryl monoisostearate [also known as polyglyceryl-2 isostearate].

[0066] Examples of fatty acid alkanolamides include coconut oil fatty acid monoethanolamide [also known as cocamide MEA], coconut oil fatty acid N-methylethanolamide [also known as cocamide methyl MEA], and coconut oil fatty acid diethanolamide [also known as cocamide DEA].

[0067] Examples of water include tap water, purified water, hard water, soft water, natural water, deep-sea water, hot spring water, electrolyzed alkaline ionized water, electrolyzed acidic ionized water, ion-exchanged water, and cluster water.

[0068] Examples of oily components include liquid oils and fats, solid oils and fats, hydrocarbon oils, synthetic ester oils, silicone oils, and essential oils.

[0069] Examples of liquid oils include avocado oil, camellia oil, turtle oil, macadamia seed oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, peach kernel oil, wheat germ oil, sasanqua oil, castor oil, linseed oil, safflower oil, cotton seed oil, soybean oil, peanut oil, tea seed oil, citronella oil, rice bran oil, jojoba oil, rice germ oil, glyceryl tri-2-ethylhexanoate [also known as triethylhexanoin], and glyceryl triisopalmitate [also known as triisopalmitin].

[0070] Examples of solid fats and oils include cocoa butter, coconut oil, candelilla wax, beeswax, shea butter, horse oil, hydrogenated coconut oil, palm oil, beef tallow, lanolin, hydrogenated beef tallow, palm kernel oil, hydrogenated palm oil, lard, Japanese wax, and hydrogenated castor oil.

[0071] Examples of hydrocarbon oils include 2,2,4,6,6-pentamethylheptane (also known as isododecane), 2,2,4,4,6,8,8-heptamethylnonane (also known as isohexadecane), hexamethyltetracosan (also known as squalane), 2,6,10,15,19,23-hexamethyltetracosa-2,6,10,14,18,22-hexaene (also known as squalene), petrolatum, paraffin, hydrogenated polyisobutene, ozokerite, 2,6,10,14-tetramethylpentadecane, ceresin, and microcrystalline wax.

[0072] Examples of synthetic ester oils include isopropyl myristate, cetyl ethylhexanoate, octyldodecyl myristate, cetyl palmitate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl ethylhexanoate, cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl hydroxystearate, glycol diethylhexanoate, and neopentyl dicaprate. Glycol, tryster of caprylic acid, capric acid, and glycerin [also known as: tri(caprylic / capric acid)glyceryl], hydroxystearic acid, hydroxystearic acid, stearic acid, and rosin acid hexaester of dipentaerythritol [also known as: hexa(hydroxystearic acid / stearic acid / rosin acid)dipentaerythrityl], diisostearyl malate, glyceryl diisostearate, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triethylhexanoate Rollpropane, Pentaerythrityl Tetraethylhexanoate, Trimethylolpropane Triisostearate, Ethylhexyl Palmitate, Glyceryl Trimyristate [also known as Trimyristate], Methyl Ricinoleate, Oleyl Oleate, Diisobutyl Adipate, Ester of Lauroyl Glutamate, Phytosterol, and Octyldodecanol [also known as Di(Phytosteryl / Octyldodecyl Lauroyl Glutamate)], Diheptyl Undecyl Adipate, Ethyl Laurate, Seba Examples include diethylhexyl cinnamate, isocetyl myristate, hexyldecyl palmitate, dihexyldecyl adipate, diisopropyl sebacate, diethylhexyl succinate, triethyl citrate, polyoxyethylene (average degree of polymerization 3) trimethylolpropane triisostearate [also known as PEG-3 trimethylolpropane triisostearate], diglyceryl triisostearate [also known as polyglyceryl-2 triisostearate], and sucrose tetraisostearate.

[0073] Examples of silicone oils include linear polysiloxanes, cyclic polysiloxanes, and modified polysiloxanes (such as amino-modified polysiloxanes, polyether-modified siloxanes, alkyl-modified polysiloxanes, and fluorine-modified polysiloxanes).

[0074] Examples of linear polysiloxanes include methylphenylpolysiloxane [also known as diphenyldimethicone], caprylyl methicone, dimethicone, dimethylpolysiloxane crosslinked with divinyldimethylpolysiloxane [also known as (dimethicone / vinyldimethicone) crosspolymer], and dimethylpolysiloxane copolymer crosslinked with phenylvinyldimethylpolysiloxane [also known as (dimethicone / phenylvinyldimethicone) crosspolymer].

[0075] Examples of cyclic polysiloxanes include decamethylcyclopentasiloxane (also known as cyclopentasiloxane) and dodecamethylcyclohexasiloxane (also known as cyclohexasiloxane).

[0076] Examples of modified polysiloxanes include aminopropyl dimethicone, alkyl (C26-28) dimethicone, alkyl (C30-45) dimethicone, polyoxyethylene (average degree of polymerization 10) methylpolysiloxane copolymer [also known as PEG-10 dimethicone], polyoxyethylene (average degree of polymerization 12) methylpolysiloxane copolymer [also known as PEG-12 dimethicone], and polyoxyethylene (average degree of polymerization 9) dimethylsiloxyethyl dimethicone [also known as PEG-9 polydimethylsiloxyethyl dimethicone].

[0077] Examples of solvents include ethanol, isoprenediol (also known as isopentyldiol), denatured alcohol, dipropylene glycol (also known as DPG), 1,2-hexanediol (also known as 1,2-hexanediol), isododecane, isopropanol, butyl acetate, diethylene glycol monoethyl ether (also known as ethoxydiglycol), and propylene glycol (also known as PG).

[0078] Examples of humectants include glycerin, 1,3-butylene glycol (also known as BG), hydrogenated rapeseed alcohol (also known as hydrogenated rapeseed alcohol), sorbitol, sodium acetate (also known as sodium lactate), sodium pyrrolidone carboxylate (also known as PCN-Na), sodium hyaluronate (also known as sodium hyaluronate), and sodium chondroitin sulfate (also known as sodium chondroitin sulfate).

[0079] Examples of chelating agents include ethylenediaminetetraacetic acid (also known as EDTA), disodium ethylenediaminetetraacetic acid (also known as EDTA-2Na), sodium polyphosphate (also known as sodium polyphosphate), disodium pyrophosphate (also known as disodium pyrophosphate), gluconic acid, sodium gluconate (also known as sodium gluconate), and ascorbic acid.

[0080] Examples of conditioning agents include polymers of quaternary ammonium salts obtained by adding glycidyltrimethylammonium chloride to hydroxyethylcellulose [also known as polyquaternium-10], polymers of quaternary ammonium salts obtained from acrylamide and dimethyldiallylammonium chloride [also known as polyquaternium-7], copolymers of dimethyldiallylammonium chloride and acrylic acid [also known as polyquaternium-22], copolymers of vinyl acetate and vinylpyrrolidone [also known as (VP / VA) copolymer], quaternary ammonium salts obtained by adding glycidyltrimethylammonium chloride to guar gum [also known as guar hydroxypropyltrimonium chloride], polyethylene glycol 20000 [also known as PEG-400], sodium polyacrylate [also known as sodium polyacrylate], hydroxyethylcellulose and D-pantothenyl alcohol [also known as panthenol], etc.

[0081] Examples of thickening agents include guar gum, xanthan gum, starch, behenyl alcohol, stearyl alcohol, cetearyl alcohol, cetanol, myristyl alcohol, carboxyvinyl polymer (also known as carbomer), hydroxypropyl methylcellulose, polyvinyl alcohol, sodium polyacrylate (also known as sodium polyacrylate), sodium salt of starch grafted with acrylic acid (also known as sodium acrylate grafted starch), dimethyldistearylammonium hectorite (also known as disteardimonium hectorite), talc, and glycol distearate and acrylic acid / alkyl methacrylate (C10-30) copolymer (also known as (acrylates / alkyl acrylate (C10-30)) crosspolymer).

[0082] Examples of skin whitening agents include tranexamic acid, arbutin, and hydroquinone.

[0083] Examples of pH adjusters include lactic acid, citric acid, phosphoric acid, malic acid, tartaric acid, hydrochloric acid, acetic acid, sodium hydroxide, potassium hydroxide, and triethanolamine.

[0084] Examples of cooling agents include menthol, peppermint oil, thymol, methyl salicylate, and camphor.

[0085] Examples of colorants include Blue No. 1, Blue No. 2, Green No. 3, and Red No. 1.

[0086] Examples of ultraviolet scattering agents include titanium dioxide and zinc oxide.

[0087] Examples of UV absorbers include ethylhexyl methoxycinnamate, esters of dimethyl para-aminobenzoic acid and 2-ethylhexyl alcohol [also known as dimethyl PABA ethylhexyl], and t-butyl methoxydibenzoylmethane.

[0088] Examples of preservatives include phenoxyethanol, o-cymene-5-ol, methylparaben, ethylparaben, propylparaben, isopropylparaben, butylparaben, and isobutylparaben.

[0089] Antioxidants include vitamin E (also known as tocopherol), dibutylhydroxytoluene (also known as BHT), butylhydroxyanisole (also known as BHA), dipotassium glycyrrhizate (also known as glycyrrhizic acid 2K), ascorbyl palmitate, and rosemary leaf extract.

[0090] The types of known cosmetic components that can be used in the present invention as needed, and their respective contents, are as follows: Amphoteric surfactants, other anionic surfactants, cationic surfactants, nonionic surfactants, water, oily components, solvents, and humectants are each preferably 50% by weight or less, and more preferably 10% by weight or less, based on the total weight of the detergent. The chelating agent, conditioning agent, thickener, and whitening agent are each preferably 30% by weight or less, and more preferably 10% by weight or less, based on the total weight of the cleansing agent. pH adjusters, cooling agents, colorants, UV scattering agents, UV absorbing agents, preservatives, and antioxidants are each preferably present in amounts of 10% by weight or less, and more preferably 5% by weight or less, based on the total weight of the cleaning agent.

[0091] The detergent of the present invention can be produced by mixing the surfactant composition of the present invention and any other components in a known stirrer. Examples of agitators used in manufacturing the cleaning agent of the present invention include Henschel mixers, ball mills, jet mills, kneaders, planetary mixers, sand mills, attritors, ribbon blenders, disperser mixers, and homomixers, with disperser mixers being preferred.

[0092] The cleaning agent of the present invention is preferably solid, liquid, or paste-like at 25°C, and more preferably liquid from the viewpoint of ease of handling.

[0093] When the detergent of the present invention is a shampoo, the shampoo preferably contains, for example, the following components.

[0094] Other preferred anionic surfactants include at least one selected from the group consisting of sodium polyoxyethylene (average degree of polymerization 2) lauryl ether sulfate, sodium polyoxyethylene (average degree of polymerization 4) lauryl ether acetate, sodium N-coconut oil fatty acid acyl-L-glutamate, sodium N-lauroyl sarcosinate, and sodium olefin (C14-16) sulfonate. The shampoo may contain 3.0 to 10.0% by weight of polyoxyethylene (average degree of polymerization 2) lauryl ether sulfate sodium as an active ingredient, based on the total weight of the shampoo. The shampoo may contain 1.0 to 5.0% by weight of polyoxyethylene (average degree of polymerization 4) lauryl ether acetate sodium as an active ingredient, based on the total weight of the shampoo. The shampoo may contain 3.0 to 10.0% by weight of N-coconut oil fatty acid acyl-L-glutamate sodium as an active ingredient, based on the total weight of the shampoo. The shampoo may contain 1.0 to 5.0% by weight of N-lauroyl sarcosinate sodium as an active ingredient, based on the total weight of the shampoo. The shampoo may contain 1.0 to 10.0% by weight of olefin (C14-16) sulfonate sodium as an active ingredient, based on the total weight of the shampoo.

[0095] As the amphoteric surfactant, at least one selected from the group consisting of cocamidopropyl betaine and 2-coconut oil fatty acid-N-hydroxyethyl-N-hydroxyethylimidazolinium betaine is preferred. The shampoo may contain 1.0 to 5.0% by weight of cocamidopropyl betaine, calculated as an active ingredient, based on the total weight of the shampoo. The shampoo may also contain 1.0 to 5.0% by weight of 2-coconut oil fatty acid-N-hydroxyethyl-N-hydroxyethylimidazolinium betaine, calculated as an active ingredient, based on the total weight of the shampoo.

[0096] As a humectant, at least one selected from the group consisting of 1,3-butylene glycol and glycerin is preferred. The shampoo may contain 1.0 to 5.0% by weight of 1,3-butylene glycol, calculated as an active ingredient, based on the total weight of the shampoo. The shampoo may also contain 1.0 to 5.0% by weight of glycerin, calculated as an active ingredient, based on the total weight of the shampoo.

[0097] As a conditioning agent, at least one selected from the group consisting of polyquaternium-22, polyquaternium-7, and polyquaternium-10 is preferred. The shampoo may contain 0.1 to 1.0% by weight of polyquaternium-22, calculated as an active ingredient, based on the total weight of the shampoo. The shampoo may contain 0.005 to 0.5% by weight of polyquaternium-7, calculated as an active ingredient, based on the total weight of the shampoo. The shampoo may contain 0.1 to 1.0% by weight of polyquaternium-10, calculated as an active ingredient, based on the total weight of the shampoo.

[0098] Dimethicone is preferred as the oily component. The shampoo may contain 0.1 to 1.0% by weight of dimethicone, calculated as an active ingredient based on the total weight of the shampoo.

[0099] EDTA-2Na is preferred as the chelating agent. The shampoo may contain 0.05 to 0.5% by weight of EDTA-2Na, calculated as an active ingredient based on the total weight of the shampoo.

[0100] As the nonionic surfactant, at least one selected from the group consisting of PEG-160 sorbitan triisostearate and coconut oil fatty acid N-methylethanolamide is preferred. The shampoo may contain PEG-160 sorbitan triisostearate in an amount of 1.0 to 5.0% by weight, calculated as an active ingredient, based on the total weight of the shampoo. The shampoo may also contain coconut oil fatty acid N-methylethanolamide in an amount of 1.0 to 5.0% by weight, calculated as an active ingredient, based on the total weight of the shampoo.

[0101] Menthol is preferred as a cooling agent. The shampoo may contain 0.5 to 3.0% by weight of menthol, calculated as an active ingredient, based on the total weight of the shampoo.

[0102] Citric acid is preferred as the pH adjuster. The shampoo may contain 0.05 to 0.5% by weight of citric acid, calculated as an active ingredient based on the total weight of the shampoo.

[0103] When the detergent of the present invention is a shampoo, preferred compositions of each component, when converted to active ingredients, include the following compositions. Alkyl hydroxyether acetate (salt) (A): 0.05-6.00% by weight Other anionic surfactants: 3.0-20.0% by weight Amphoteric surfactants: 1.0-5.0% by weight Moisturizer: 1.0-5.0% by weight Conditioning agent: 0.005-1.0% by weight Oily component: 0.1~1.0% by weight Chelating agent: 0.05-0.5% by weight Nonionic surfactant: 1.0-10.0% by weight Cooling agent: 0.5-3.0% by weight pH adjuster: 0.05-0.5% by weight

[0104] When the cleansing agent of the present invention is a facial cleanser for pump dispensers, it is preferable that the facial cleanser for pump dispensers contains, for example, the following components.

[0105] Other preferred anionic surfactants include at least one selected from the group consisting of lauroyl-L-glutamic acid triethanolamine and olefin (C14-16) sulfonate sodium. The facial cleanser for pump dispensers may contain 1.0 to 10.0% by weight of lauroyl-L-glutamic acid triethanolamine, calculated as an active ingredient, based on the total weight of the facial cleanser for pump dispensers. The facial cleanser for pump dispensers may also contain 0.5 to 3.0% by weight of olefin (C14-16) sulfonate sodium, calculated as an active ingredient, based on the total weight of the facial cleanser for pump dispensers.

[0106] As the amphoteric surfactant, cocamidopropyl betaine is preferred. The facial cleanser for pump dispensers may contain 0.5 to 3.0% by weight of cocamidopropyl betaine as an active ingredient, based on the total weight of the facial cleanser for pump dispensers.

[0107] Polyquaternium-7 is preferred as a conditioning agent. The facial cleanser for pump dispensers may contain 0.05 to 0.5% by weight of polyquaternium-7 as an active ingredient, based on the total weight of the facial cleanser for pump dispensers.

[0108] When the cleansing agent of the present invention is a facial cleanser for pump foamers, preferred compositions of each component, when converted to active ingredients, include the following compositions. Alkyl hydroxyether acetate (salt) (A): 0.01~4.00% by weight Other anionic surfactants: 0.5-10.0% by weight Amphoteric surfactants: 0.5-3.0% by weight Conditioning agent: 0.05-0.5% by weight

[0109] When the cleansing agent of the present invention is a cream facial cleanser, the cream facial cleanser preferably contains, for example, the following components.

[0110] As for other anionic surfactants, at least one selected from the group consisting of sodium acyl-L-glutamate, potassium acylglycine, salts of lauric acid, salts of stearic acid, and salts of palmitic acid is preferred. The cream cleanser may contain 1.0 to 3.0% by weight of N-coconut oil fatty acid acyl-L-glutamate sodium as an active ingredient, based on the total weight of the cream cleanser. The cream cleanser may contain 5.0 to 20.0% by weight of N-coconut oil fatty acid acylglycine potassium as an active ingredient, based on the total weight of the cream cleanser. The cream cleanser may contain 0.5 to 5.0% by weight of lauric acid salt as an active ingredient, based on the total weight of the cream cleanser. The cream cleanser may contain 0.5 to 20.0% by weight of stearic acid salt as an active ingredient, based on the total weight of the cream cleanser. The cream cleanser may contain 5.0 to 20.0% by weight of palmitic acid salt as an active ingredient, based on the total weight of the cream cleanser. In this specification, if other anionic surfactants contain fatty acid salts, it is assumed that all fatty acids are potassium salts, and the weight of the potassium salt of the fatty acid is considered to be the weight of the fatty acid salt.

[0111] As the amphoteric surfactant, cocamidopropyl betaine is preferred. The cream cleanser may contain 0.5 to 3.0% by weight of cocamidopropyl betaine as an active ingredient, based on the total weight of the cream cleanser.

[0112] Glycerin is preferred as a humectant. The cream cleanser may contain 5.0 to 20.0% by weight of glycerin, calculated as an active ingredient, based on the total weight of the cream cleanser.

[0113] Polyquaternium-7 is preferred as a conditioning agent. The cream cleanser may contain 0.01 to 0.10% by weight of polyquaternium-7 as an active ingredient, based on the total weight of the cream cleanser.

[0114] Vitamin E is preferred as an antioxidant. The cream facial cleanser may contain 0.05 to 0.30% by weight of vitamin E, calculated as an active ingredient, based on the total weight of the cream facial cleanser.

[0115] Glycol distearate is preferred as a thickening agent. The cream facial cleanser may contain 1.0 to 3.0% by weight of glycol distearate as an active ingredient, based on the total weight of the cream facial cleanser.

[0116] As the nonionic surfactant, at least one selected from the group consisting of PEG-190 distearate and coconut oil fatty acid N-methylethanolamide is preferred. The cream cleanser may contain PEG-190 distearate in an amount of 3.0 to 10.0% by weight, calculated as an active ingredient, based on the total weight of the cream cleanser. The cream cleanser may also contain coconut oil fatty acid N-methylethanolamide in an amount of 1.0 to 3.0% by weight, calculated as an active ingredient, based on the total weight of the cream cleanser.

[0117] Potassium hydroxide is preferred as the pH adjusting agent. The cream facial cleanser may contain 3.0 to 10.0% by weight of potassium hydroxide, calculated as an active ingredient, based on the total weight of the cream facial cleanser.

[0118] When the cleansing agent of the present invention is a cream facial cleanser, preferred compositions of each component, when converted to active ingredients, include the following compositions. Alkyl hydroxyether acetate (salt) (A): 0.015~6.0% by weight Other anionic surfactants: 10.0-40.0% by weight Amphoteric surfactants: 0.5-3.0% by weight Moisturizer: 5.0-20.0% by weight Conditioning agent: 0.01-0.10% by weight Antioxidant: 0.05-0.30% by weight Thickener: 1.0-10.0% by weight Nonionic surfactant: 1.0-13.0% by weight pH adjuster: 3.0-10.0% by weight

[0119] This specification discloses the following:

[0120] The present disclosure (1) is a surfactant composition containing an alkyl hydroxyether acetate (salt) (A) represented by the following general formula (1) and a compound (I) detected during a retention time of 10 to 17 minutes in gas chromatography using petroleum ether in accordance with JIS K8593, wherein the ratio of the peak area of ​​compound (I) to the peak area of ​​petroleum ether measured by gas chromatography is 0.02 to 50%. R 1 -CH(OH)-CH2-OCH2COOM 1 (1) [In general formula (1), R 1 represents an alkyl group with 8 to 12 carbon atoms, M 1 [This represents a hydrogen atom, a sodium atom, a potassium atom, or triethanolammonium.]

[0121] Disclosure (2) is a detergent comprising the surfactant composition described in Disclosure (1). [Examples]

[0122] The present invention will be further described below with reference to examples and comparative examples, but the present invention is not limited thereto.

[0123] <Manufacturing Example 1> A 1 L four-necked flask equipped with a stirring device, a reflux condenser, a dropping funnel, and a thermometer was charged with 50 g of 1,2-dodecanediol [manufactured by Merck KGaA], 10 g of toluene [manufactured by FUJIFILM Wako Pure Chemical Corporation], and 30 g of sodium monochloroacetate [manufactured by Dainac Corporation]. After nitrogen substitution, the temperature was raised to 50°C, and while stirring, 10 g of granular sodium hydroxide [manufactured by Tosoh Corporation] was gradually added over 5 hours, followed by aging for 3 hours to allow reaction. The solution after the reaction was adjusted to 50°C, 25 g of ion-exchanged water was added, the temperature was raised to 70°C, 32 g of a 38% hydrochloric acid aqueous solution [manufactured by Toagosei Co., Ltd.] was added, and then the mixture was stirred for 30 minutes to obtain a solution. The obtained solution was transferred to a separating funnel, allowed to stand for 30 minutes, and then separated to remove the lower-layer solution. 10 g of sodium hydroxide was added to the remaining supernatant solution, and the pressure was reduced to 2.7 kPa at 75°C using a rotary evaporator. The volatile components were removed by maintaining that temperature and pressure for 7 hours. Further, 10 g of water was added, the pressure was reduced to 2.7 kPa at 75°C using a rotary evaporator, and the process of maintaining that temperature and pressure for 7 hours to remove the volatile components was repeated 4 times to obtain Powder 1 containing a surfactant. A sample of 1 g was taken from Powder 1 containing a surfactant, and using a liquid chromatograph / time-of-flight mass spectrometer (LC-TOF-MS), according to the <Measurement conditions of LC-TOF-MS> described later, the molecular structure of the surfactant contained in Powder 1 containing a surfactant (including the types of cations constituting the surfactant) was specified. Further, the content of alkyl hydroxy ether acetic acid (salt) (A) in Powder 1 containing a surfactant was measured according to the <HPLC measurement conditions of alkyl hydroxy ether acetic acid (salt) (A)> described later. Powder 1 containing a surfactant contained 50% by weight of sodium dodecyl hydroxy ether acetate as alkyl hydroxy ether acetic acid (salt) (A) and contained toluene, benzaldehyde, benzyl alcohol, nonanal, decanal, and dodecanal as Compound (I). For Powder 1 containing a surfactant, no alkyl hydroxy ether acetic acid (salt) (A) other than sodium dodecyl hydroxy ether acetate was detected.

[0124] <Production Example 2> In a 1 L four-necked flask equipped with a stirrer, a reflux condenser, a dropping funnel, and a thermometer, 50 g of 1,2-dodecanediol [manufactured by Fujifilm Wako Pure Chemical Corporation], 10 g of toluene [manufactured by Fujifilm Wako Pure Chemical Corporation], and 30 g of sodium monochloroacetate [manufactured by Denka Co., Ltd.] were added. After nitrogen substitution, the temperature was raised to 50°C, and while stirring, 10 g of granular sodium hydroxide [manufactured by Tosoh Corporation] was gradually added over 5 hours, and then aged for 3 hours to cause a reaction. The solution after the reaction was adjusted to 50°C, 25 g of ion-exchanged water was added, the temperature was raised to 70°C, 32 g of a 38% hydrochloric acid aqueous solution [manufactured by Toagosei Co., Ltd.] was added, and then stirred for 30 minutes to obtain a solution. The obtained solution was transferred to a separatory funnel, allowed to stand for 30 minutes, and then separated to remove the lower-layer solution. 10 g of sodium hydroxide was added to the remaining supernatant solution, and the pressure was reduced to 2.7 kPa at 75°C using a rotary evaporator. By maintaining the temperature and pressure for 7 hours, volatile components were removed, and a powder 2 containing a surfactant was obtained. A 1 g sample was taken from the powder 2 containing a surfactant, and using a liquid chromatograph / time-of-flight mass spectrometer (LC-TOF-MS), according to the <Measurement Conditions of LC-TOF-MS> described below, the molecular structure of the surfactant contained in the powder 2 containing a surfactant (including the types of cations constituting the surfactant) was specified. Furthermore, the content of alkyl hydroxy ether acetic acid (salt) (A) in the powder 2 containing a surfactant was measured according to the <HPLC Measurement Conditions of Alkyl Hydroxy Ether Acetic Acid (Salt) (A)> described below. The powder 2 containing a surfactant contained 50% by weight of sodium dodecyl hydroxy ether acetate as alkyl hydroxy ether acetic acid (salt) (A), and contained toluene, benzaldehyde, benzyl alcohol, nonanal, decanal, and dodecanal as compound (I). For the powder 2 containing a surfactant, no alkyl hydroxy ether acetic acid (salt) (A) other than sodium dodecyl hydroxy ether acetate was detected.

[0125] <Measurement Conditions of LC-TOF-MS> • Device: Xevo G2-XS (manufactured by Waters) • Analytical column: Scherzo SM-C18 (3μm, 2mm x 100mm) (Intakt) Column temperature: 40°C Mobile phase A: methanol Mobile phase B: 10 mM ammonium acetate aqueous solution / methanol (80 / 20) ·Flow rate: 0.3mL / min • Sample injection volume: 0.8 μL • Gradient conditions: 0-1 min: A60% → 4-5 min: A80% → 9-16 min: A98% → 16.1-21 min: A60% • Detector: MS • Ion source: ESI (±) • Source temperature: 140℃ • Desolvent removal temperature: 600℃ • Desolvent gas flow rate: 1000 L / h • Sample preparation conditions: 1000-fold dilution with methanol

[0126] <HPLC measurement conditions for alkylhydroxyether acetate (salt) (A)> Equipment: Liquid chromatography (manufactured by Shimadzu Corporation) Detector: Differential refractometer Column: Capsule pack C18 SG 120S5 (inner diameter 4.6 nm, length 25 cm, manufactured by Osaka Soda Co., Ltd.) Column temperature: 40℃ Eluent: Mixture of 0.02 mol / L phosphoric acid, 0.01 mol / L sodium dihydrogen phosphate solution, and acetonitrile [53:47 (volume ratio)] Flow rate: 0.8mL / min Sample concentration: 8 mg / mL Sample injection volume: 25 μL Retention time of alkyl hydroxy ether acetate (salt) (A): 19.0-22.5 minutes

[0127] <Examples 1-6 and Comparative Example 1> The surfactant-containing powder 1 obtained in Production Example 1, the surfactant-containing powder 2 obtained in Production Example 2, and deionized water were mixed in the proportions (by weight) shown in Table 1 to prepare surfactant compositions 1 to 6 and comparative surfactant composition 1' of the present invention. More specifically, the surfactant-containing powder 1 obtained in Production Example 1 and the surfactant-containing powder 2 obtained in Production Example 2 were filled into 50 mL screw tubes, deionized water was added thereto, and the mixture was stirred with a stirrer until all components were homogeneous to prepare surfactant compositions 1 to 6 and comparative surfactant composition 1' of the present invention. The active ingredient concentration of surfactant compositions 1 to 6 and comparative surfactant composition 1' of the present invention was 29% by weight in all cases.

[0128] <Method for calculating the peak area ratio of compound (I) / petroleum ether> The surfactant compositions 1 to 6 of the present invention and the comparative surfactant composition 1' were used as samples, and the peak areas of petroleum ether and compound (I) were measured by gas chromatography using petroleum ether in accordance with JIS K8593. The gas chromatography measurement method described above was as described in <Gas Chromatography Measurement Method> below.

[0129] <Method of measurement using gas chromatography> (How to prepare the sample) 10 g of the sample was placed in a 100 mL screw-top tube, and 5 mL of ethanol (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) and 10 mL of petroleum ether (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd., conforming to JIS K8593) were added. A stirrer piece was then added, and the mixture was stirred at 500 rpm at room temperature for 1 minute, followed by standing for 10 minutes. The upper layer was then collected as a sample. Using the collected samples, the peak areas of petroleum ether and compound (I) were measured according to the gas chromatography measurement conditions described later.

[0130] (Measurement conditions for gas chromatography) Equipment: High-performance general-purpose gas chromatograph (Shimadzu Corporation, GC-2014) Column: Ultra2 (manufactured by GL Sciences Co., Ltd., inner diameter: 0.2 mm, length: 25 m, film thickness: 0.11 μm) Carrier gas: Helium Injector temperature: 280℃ Detector temperature: 310℃ Temperature program: Heat from 50°C to 200°C at a rate of 5°C / min, then heat to 280°C at a rate of 10°C / min. Sample injection volume: 10 μL Detector: Flame ionization detector (FID) Retention time of compound (I): 10-17 minutes Petroleum ether retention time: 1.4-1.8 minutes

[0131] The peak area ratio of compound (I) to petroleum ether (in %) was calculated from the measured peak areas of petroleum ether and compound (I) using the following formula. The results are shown in the "Peak Area Ratio of Compound (I) to Petroleum Ether" column of Table 1. Ratio of peak area of ​​compound (I) / petroleum ether = (peak area of ​​compound (I) × 100) / peak area of ​​petroleum ether

[0132] <Fineness of foam> The surfactant compositions 1 to 6 of the present invention and the comparative surfactant composition 1' were diluted with hard water having a hardness of 300 ppm (calcium oxide equivalent) to obtain diluted solutions, with an active ingredient concentration of 1% by weight. The obtained diluted solutions were foamed at 8000 rpm for 1 minute using a dynamic foam analyzer DFA100 (KRUSS), and then allowed to stand for 1 minute. The size of the bubbles after standing was measured using a dynamic foam analyzer DFA100 (KRUSS). Measured bubble size (unit: μm) 2 The values ​​shown are in the "Fineness of Foam" column of Table 1. Smaller bubbles indicate finer bubbles.

[0133] [Table 1]

[0134] The results in Table 1 show that surfactant compositions 1 to 6 of the present invention are superior in terms of foam fineness compared to the comparative surfactant composition 1'.

[0135] <Examples 7-15 and Comparative Examples 2-3> The surfactant compositions 1 to 6 of the present invention and comparative surfactant composition 1' were mixed with any other component described later in the proportions (by weight) shown in Tables 2 to 3 to prepare the detergents of the present invention (shampoo, facial cleanser for pump foamers, and facial cream cleanser) according to Examples 7 to 15 and comparative detergents (shampoo) according to Comparative Examples 2 to 3. In Tables 2 and 3, the amount of water is indicated as "remainder," which means that water was added so that the total weight of the surfactant composition and any other component including water (total weight of the detergent) was 100% by weight.

[0136] <Longevity of foam> The detergents of the present invention described in Examples 7 to 15 and the comparative detergents described in Comparative Examples 2 to 3 were diluted with deionized water to obtain dilutions with an active ingredient concentration of 1% by weight. The obtained dilutions were foamed at 8000 rpm for 1 minute using a dynamic foam analyzer DFA100 (KRUSS), and then allowed to stand for 1 minute. The size of the bubbles after standing for 1 minute was measured using a dynamic foam analyzer DFA100 (KRUSS), and this was taken as the initial bubble size. Furthermore, the size of the bubbles after standing for another 180 seconds after the aforementioned 1 minute was measured using a dynamic foam analyzer DFA100 (KRUSS), and this was taken as the bubble size after 180 seconds. The relative size of the bubbles after 180 seconds to the initial size was calculated using the following formula, and the persistence of the bubbles was evaluated. The calculated relative size of the bubbles after 180 seconds to the initial size (in %) is shown in the "Bubble Persistence" column of Tables 2 and 3. A smaller relative size of the bubbles after 180 seconds to the initial size indicates better bubble persistence. The relative size of the bubble after 180 seconds to the initial size = (size of the bubble after 180 seconds × 100) / initial size of the bubble Generally, the size of bubbles tends to increase over time as they fuse together. However, since the detergent of the present invention contains a surfactant composition in which the peak area ratio of compound (I) / petroleum ether is within the above range, it is considered that the size of the bubbles will not increase easily even as time passes.

[0137] <irritating odor> Ten Japanese men and women aged 30 to 57 evaluated the irritating odor of the detergents of the present invention described in Examples 7 to 15 and the comparative detergents described in Comparative Examples 2 to 3. Specifically, when the detergent was a shampoo, 2g of shampoo was lathered and then applied to the hair. When the detergent was a facial cleanser, 1g of facial cleanser was lathered and then applied to the face. The intensity of the irritating odor during washing was evaluated using a rating system of 1 to 5 points (5 levels) according to the evaluation criteria below, and the sum of the scores from the 10 people was calculated and used to evaluate the irritating odor. The sum of the scores from the 10 people is shown in the "Irritating Odor" column of Tables 2 and 3. (Evaluation criteria for irritating odors) 5 points: No pungent odor at all. 4 points: I hardly notice any pungent odor. 3 points: Slightly noticeable pungent odor. 2 points: I notice a strong, pungent odor. 1 point: I detect a very strong, pungent odor.

[0138] [Table 2]

[0139] [Table 3]

[0140] In addition, the following were used as optional other components listed in Tables 2-3.

[0141] <Any other component> • 26% by weight aqueous solution of polyoxyethylene (average degree of polymerization 2) lauryl ether sodium sulfate [Product name: Viewlight NA-25S {Manufactured by Sanyo Chemical Industries, Ltd. (Viewlight is a registered trademark of Sanyo Chemical Industries, Ltd.)}] • 28% by weight aqueous solution of sodium lauryl ether acetate (average degree of polymerization 4) of polyoxyethylene [Product name: Viewlight LCA-25N {Manufactured by Sanyo Chemical Industries, Ltd.}] • 29% by weight aqueous solution of sodium acyl-L-glutamate (N-coconut oil fatty acid) [Product name: Plantapon Amino SCG-L {Manufactured by BASF (Plantapon is a registered trademark of Cognis IP Management Gesellschaft mit beschränkter Haftung)}] • 30% by weight aqueous solution of lauroyl-L-glutamic acid triethanolamine [Product name: Amisoft LT-12 {Manufactured by Ajinomoto Healthy Supply Co., Ltd. (Amisoft is a registered trademark of Ajinomoto Co., Inc.)}] • 30% by weight aqueous solution of sodium N-lauroyl sarcosinate [Product name: Soypon SLE {Manufactured by Kawaken Fine Chemical Co., Ltd. (Soypon is a registered trademark of Kawaken Fine Chemical Co., Ltd.)}] • Potassium N-coconut oil fatty acid acylglycine [Product name: Amilite GCK-11 {Manufactured by Ajinomoto Healthy Supply Co., Ltd. (Amilite is a registered trademark of Ajinomoto Co., Inc.)}] • 37% by weight aqueous solution of sodium olefin (C14-16) sulfonate [Product name: Lipolan LJ-441 {Manufactured by Lion Corporation (Lipolan is a registered trademark of Lion Specialty Chemicals Co., Ltd.)}] • 30% by weight aqueous solution of cocamidopropyl betaine [Product name: Lebon HC-30W {Manufactured by Sanyo Chemical Industries, Ltd.}] • 43% by weight aqueous solution of 2-coconut oil fatty acid-N-hydroxyethyl-N-hydroxyethylimidazolinium betaine [Product name: Levon CIB {Manufactured by Sanyo Chemical Industries, Ltd.}] • Lauric acid [Product name: NAA-122 {Manufactured by NOF Corporation (NAA is a registered trademark of NOF Corporation)}] • Stearic acid [Product name: NAA-172 {Manufactured by NOF Corporation}] • Palmitic acid [Product name: NAA-160 {Manufactured by NOF Corporation}] • 1,3-Butylene glycol [manufactured by Nacalai Tesque Co., Ltd.] • Glycerin [Product name: Concentrated glycerin for cosmetics {Manufactured by Kao Corporation}] • Polyquaternium-22 (40% by weight aqueous solution) [Product name: MERQUAT280 {Manufactured by Lubrizol Corporation (MERQUAT is a registered trademark of Lubrizol Advanced Materials, Inc.)}] • Polyquaternium-7 (9% by weight aqueous solution) [Product name: MERQUAT550 (manufactured by Lubrizol)] • Polyquaternium-10 [Product name: Sensore 10M Polymer (manufactured by Lubrizol)] • Dimethicone [Product name: KF-96A-2CS {Manufactured by Shin-Etsu Chemical Co., Ltd.}] • Vitamin E [Product name: D-α-tocopherol {Manufactured by Tokyo Chemical Industry Co., Ltd.}] ·EDTA-2Na [Product name: 2NA (EDTA 2Na) {manufactured by Dojindo Chemical Laboratory Co., Ltd.}] • Coconut oil fatty acid N-methylethanolamide [Product name: Aminone C-11S {Manufactured by Kao Corporation (Aminone is a registered trademark of Kao Corporation)}] • PEG-160 sorbitan triisostearate [Product name: Leodor TW-IS399C {Manufactured by Kao Corporation (Leodor is a registered trademark of Kao Corporation)}] • PEG-190 distearate [Product name: Emulmin 862 {Manufactured by Sanyo Chemical Industries, Ltd. (Emulmin is a registered trademark of Sanyo Chemical Industries, Ltd.)}] • Glycol distearate [Product name: EMALEX EG-di-S {Manufactured by Nippon Emulsion Co., Ltd. (EMALEX is a registered trademark of Nippon Emulsion Co., Ltd.)}] • Menthol [Product name: l-menthol {Manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.}] • Citric acid [manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.] • Potassium hydroxide [manufactured by Nacalai Tesque Co., Ltd.]

[0142] The results in Table 2 show that the shampoos of Examples 7-12 have superior foam retention and reduced irritating odor compared to the shampoos of Comparative Examples 2 and 3. Furthermore, the results in Table 3 show that the facial cleanser for pump foamers in Example 13, and the cream facial cleansers in Examples 14 and 15, all have superior foam retention and reduced irritating odor. [Industrial applicability]

[0143] The surfactant composition of the present invention exhibits excellent fineness of foam. Furthermore, because the detergent of the present invention contains the surfactant composition of the present invention, it has excellent foam retention and suppresses irritating odor, making it suitable for shampoos, facial cleansers, and the like. In addition, the detergent of the present invention may be used as a household detergent (laundry detergent, dishwashing detergent, etc.) and an industrial detergent (cleaning agent for metals, precision parts, etc.).

Claims

1. It contains an alkyl hydroxy ether acetate (salt) (A) represented by the following general formula (1), and a compound (I) that is detected during a retention time of 10 to 17 minutes in gas chromatography using petroleum ether in accordance with JIS K8593. A surfactant composition wherein the ratio of the peak area of ​​compound (I) to the peak area of ​​petroleum ether measured by the gas chromatography is 0.02 to 50%. R １ -CH(OH)-CH ２ -OCH ２ COOM １ (1) [In general formula (1), R １ represents an alkyl group with 8 to 12 carbon atoms, M １ [This represents a hydrogen atom, a sodium atom, a potassium atom, or triethanolammonium.]

2. A detergent comprising the surfactant composition described in claim 1.

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