Hair washing agent composition

Abstract

To provide a hair washing agent composition that has a viscosity suitable for use as a washing agent, ensures stability under low temperatures, and allows foam to spread over a wide area during hair washing.SOLUTION: A hair washing agent composition contains: a component (A) which is a surfactant represented by formula (1); a component (B) which is an anionic surfactant other than the component (A); a component (C) which is an amphoteric surfactant; a component (D) which is a compound represented by formula (2); a component (E) which is a compound represented by formula (3) or a salt thereof; and water. Based on the entire hair washing agent composition, a content of the component (A) is 0.1 to 10 mass%, a content of the component (B) is 1 to 20 mass%, a content of the component (C) is 1 to 20 mass%, a content of the component (D) is 0.1 to 5 mass%, and a content of the component (E) is 0.001 to 1.0 mass%. A mass ratio of (A) / (B) is from 0.1 to 0.9, a mass ratio of {(A)+(B)} / (C) is from 0.2 to 4, and a mass ratio of (A) / (E) is from 15 to 300.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a hair cleansing composition.

Background Art

[0002] In recent years, hair cleansing agents containing amino acid-based surfactants have increased in number due to their moderate detergency and low irritation. One of the widely cited problems with hair cleansing agents containing this amino acid-based surfactant is that it is difficult to achieve a viscosity suitable for use of the cleansing agent. In response to this problem, for example, Patent Document 1 discloses a hair shampoo composition containing a taurine salt of N-acylmethyltaurine and an alkylene oxide derivative. The hair shampoo composition of Patent Document 1 has a viscosity suitable for use that stays on the hand.

[0003] On the other hand, in recent years, more attention has been paid to the appearance of hair cleansing agents, and transparent ones are demanded. Although the hair shampoo composition of Patent Document 1 has an appropriate viscosity, it may be inferior in maintaining the transparency of the appearance.

[0004] In contrast, for example, Patent Document 2 discloses a cleansing agent composition containing an N-long-chain aliphatic acyl amino acid or a salt thereof, a polyol monofatty acid ester, a hydrophobic modification of a long-chain PEG, and an aliphatic alkanolamide. The cleansing agent composition of Patent Document 2 exhibits a viscosity suitable for use and shows a transparent appearance under room temperature conditions. However, the cleansing agent composition of Patent Document 2 may not be able to maintain transparency in winter. That is, the cleansing agent composition of Patent Document 2 may be inferior in transparency at low temperatures (low-temperature stability).

[0005] Also, for people with hair longer than shoulder length, in order to obtain a comfortable cleaning feeling, it is necessary to use a large amount of hair cleaning agent. One of the reasons is that the hair cleaning agent foams immediately at the place where it adheres to the hair, and it is impossible to spread the hair cleaning agent, resulting in less hair cleaning agent available for foaming in other places. Although the cleaning agent composition of Patent Document 2 has a viscosity suitable for use as a cleaning agent, when it adheres to wet hair and is diluted more than when it is formulated, it foams immediately, and the foam may not reach from the roots to the tips of long hair in some cases.

[0006] Therefore, there is a need for a hair cleaning agent composition that has a viscosity suitable for use as a cleaning agent, has low-temperature stability that can maintain a transparent appearance even at low temperatures in winter, and allows the foam to reach a wide range during hair washing.

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0008] An object of the present invention is to provide a hair cleaning agent composition that has a viscosity suitable for use as a cleaning agent, has low-temperature stability that can maintain a transparent appearance even at low temperatures in winter, and allows the foam to reach a wide range during hair washing. In this specification, the "hair cleaning agent composition" means a cleaning agent composition used for washing hair.

Means for Solving the Problems

[0009] As a result of intensive studies by the present inventor, it has been found that the above object can be achieved by combining the following components (A) to (E) in a specific mass ratio.

[0010] The present invention based on the above findings is as follows. [1] The following components (A) to (E): (A) Formula (1):

[0011]

Chemical formula

[0012] (In the formula, R 1 CO represents an aliphatic acyl group having 8 to 22 carbon atoms, R 2 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, M n+ represents an alkali metal ion, an alkaline earth metal ion, an ammonium ion, or an organic ammonium ion, n represents 1 or 2.) a surfactant represented by (B) an anionic surfactant other than component (A), (C) an amphoteric surfactant, (D) Formula (2):

[0013]

Chemical formula

[0014] (In the formula, R 3 CO represents an aliphatic acyl group having 8 to 14 carbon atoms, BO represents an oxybutylene group, m represents a number from 1 to 2.) a compound represented by (E) Formula (3):

[0015]

Chemical formula

[0016] (In the formula, R 4 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.) a compound represented by or a salt thereof, and Water A hair cleansing composition containing With respect to the entire hair cleansing composition, the content of component (A) is 0.1 to 10% by mass, the content of component (B) is 1 to 20% by mass, the content of component (C) is 1 to 20% by mass, the content of component (D) is 0.1 to 5% by mass, and the content of component (E) is 0.001 to 1.0% by mass. The mass ratio of (content of component (A)) / (content of component (B)) is 0.1 to 0.9. The mass ratio of (total content of component (A) and component (B)) / (content of component (C)) is 0.2 to 4, and The mass ratio of (content of component (A)) / (content of component (E)) is 15 to 300. A hair cleansing composition.

Advantages of the Invention

[0017] The hair cleansing composition of the present invention (hereinafter sometimes simply referred to as "cleansing composition") has a viscosity suitable for use as a cleansing agent, has low-temperature stability capable of maintaining a transparent appearance even at low temperatures in winter, and has the effect of allowing foam to reach a wide range during hair washing.

Modes for Carrying Out the Invention

[0018] Hereinafter, embodiments of the present invention will be described. However, the present invention is not limited to the embodiments described in this specification and can be variously modified without departing from the gist of the present invention. In this specification, a numerical range defined using "~" includes the numerical values at both ends (upper limit and lower limit) of "~". For example, "2~5" represents "2 or more and 5 or less".

[0019] The cleansing composition of the present invention contains components (A) to (E) and water. Each component in the cleansing composition of the present invention may be used alone or in combination of two or more. For example, when there are two or more components (A), the "content of component (A)" means the "total content of two or more components (A)". The "content of component (B)" and the like have the same meaning as the "content of component (A)".

[0020] 〔Component (A)〕 Component (A) is a surfactant represented by the following formula (1).

[0021]

Chemical formula

[0022] Hereinafter, the definitions of the symbols in formula (1) will be described in order. R in formula (1) 1 CO represents an aliphatic acyl group having 8 to 22 carbon atoms, preferably an aliphatic acyl group having 8 to 18 carbon atoms. In the present specification, the "aliphatic acyl group (RCO)" means an acyl group derived from a fatty acid (aliphatic carboxylic acid). In the present specification, the acyl group may be either linear or branched.

[0023] Examples of the aliphatic acyl group having 8 to 22 carbon atoms include an octanoyl group, a decanoyl group, a lauroyl group, a myristoyl group, a palmitoyl group, a stearoyl group, an oleoyl group, a behenoyl group, and the like. Further, the aliphatic acyl group having 8 to 22 carbon atoms may be an acyl group derived from mixed fatty acids. Examples of the acyl group derived from mixed fatty acids include a coconut oil fatty acid acyl group and a palm kernel oil fatty acid acyl group.

[0024] R 1 CO is preferably a lauroyl group, a myristoyl group, a coconut oil fatty acid acyl group, or a palm kernel oil fatty acid acyl group, more preferably a lauroyl group, a coconut oil fatty acid acyl group, or a palm kernel oil fatty acid acyl group, and still more preferably a lauroyl group or a coconut oil fatty acid acyl group.

[0025] R in formula (1) 2 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms. In the present specification, the alkyl group may be either linear or branched. Examples of the alkyl group having 1 to 4 carbon atoms include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an iso-butyl group, a tert-butyl group, and the like.

[0026] R 2 is preferably a hydrogen atom, a methyl group, or an ethyl group, more preferably a hydrogen atom or a methyl group.

[0027] M in formula (1) n+ represents an alkali metal ion, an alkaline earth metal ion, an ammonium ion, or an organic ammonium ion. n represents 1 or 2, preferably 1. In this specification, "ammonium ion" means N + H4, and "organic ammonium ion" means N + R4 (in the above formula, one of the four Rs represents an organic group, and the remaining three represent a hydrogen atom or an organic group).

[0028] Examples of the alkali metal ion include a sodium ion and a potassium ion. Examples of the alkaline earth metal ion include a magnesium ion and a calcium ion. Examples of the organic ammonium ion include a monoethanolammonium ion, a diethanolammonium ion, and a triethanolammonium ion.

[0029] M n+ is preferably a sodium ion, a potassium ion, or a triethanolammonium ion, more preferably a sodium ion or a triethanolammonium ion, and still more preferably a sodium ion.

[0030] Component (A) is preferably at least one selected from the group consisting of sodium N-lauroyl-β-alaninate, sodium N-coconut fatty acid acyl-β-alaninate, sodium N-lauroyl-N-methyl-β-alaninate, N-lauroyl-N-methyl-β-alanine triethanolamine, sodium N-coconut fatty acid acyl-N-methyl-β-alaninate, and sodium N-lauroyl-N-ethyl-β-alaninate, More preferably, it is at least one selected from the group consisting of sodium N-coconut oil fatty acid acyl-β-alanine, sodium N-lauroyl-N-methyl-β-alanine, N-lauroyl-N-methyl-β-alanine triethanolamine, and sodium N-coconut oil fatty acid acyl-N-methyl-β-alanine, Even more preferably, it is sodium N-coconut oil fatty acid acyl-β-alanine, sodium N-lauroyl-N-methyl-β-alanine, or N-lauroyl-N-methyl-β-alanine triethanolamine.

[0031] The content of component (A) in the entire detergent composition of the present invention is 0.1 to 10% by mass, preferably 0.5 to 8% by mass, and more preferably 1 to 6% by mass. When the content of component (A) is too small, the viscosity of the detergent composition may become too low, or the range where the foam reaches during hair washing may be narrow. When the content of component (A) is too large, the viscosity of the detergent composition may become too high, or its low-temperature stability may be poor.

[0032] [Component (B)] Component (B) is an anionic surfactant other than component (A). Examples of the anionic surfactant other than component (A) include alkyl sulfate salts, polyoxyethylene alkyl ether sulfates, alkyl amide ether sulfates, polyoxyethylene amide ether sulfates, polyoxyethylene alkyl ether acetates, alkyl phosphates, polyoxyethylene alkyl ether phosphates, α-olefin sulfonates, higher fatty acid salts, N-acyl amino acid salts other than component (A), N-acyl isethionates, N-acyl methyl taurates, N-acyl polypeptide salts, alkyl sulfosuccinates, and the like. Among these, alkyl sulfate salts, polyoxyethylene alkyl ether sulfates, polyoxyethylene alkyl ether acetates, α-olefin sulfonates, N-acyl methyl taurates, and N-acyl amino acid salts other than component (A) are preferred.

[0033] The number of carbon atoms in the alkyl group and acyl group that an anionic surfactant other than component (A) may have is preferably 10 to 18, more preferably 12 to 14. The alkyl group or the acyl group may be an alkyl group or an acyl group derived from mixed fatty acids. Examples of the alkyl group derived from mixed fatty acids include coconut oil alkyl group, palm kernel oil alkyl group, etc. Examples of the acyl group derived from mixed fatty acids include coconut oil fatty acid acyl group, palm kernel oil fatty acid acyl group, etc.

[0034] Examples of the counter ion that an anionic surfactant other than component (A) may have include alkali metal ions, alkaline earth metal ions, ammonium ions, organic ammonium ions, etc.

[0035] Component (B) is Preferably at least one selected from the group consisting of sodium polyoxyethylene (3) lauryl ether sulfate, sodium N-coconut oil fatty acid acyl-N-methyl taurate, sodium N-coconut oil fatty acid acyl-N-methyl taurine taurate, and sodium N-coconut oil fatty acid acyl glutamate, More preferably at least one selected from the group consisting of sodium polyoxyethylene (3) lauryl ether sulfate, sodium N-coconut oil fatty acid acyl-N-methyl taurate, and sodium N-coconut oil fatty acid acyl glutamate, Even more preferably sodium polyoxyethylene (3) lauryl ether sulfate, sodium N-coconut oil fatty acid acyl-N-methyl taurate, or sodium N-coconut oil fatty acid acyl glutamate.

[0036] The content of component (B) in the whole detergent composition of the present invention is 1 to 20% by mass, preferably 3 to 15% by mass, more preferably 5 to 10% by mass. When the content of component (B) is too small, the range where the foam reaches during hair washing may be narrow. When the content of component (B) is too large, the viscosity of the detergent composition may become unsuitable for use, or its low-temperature stability may be poor.

[0037] Component (C) Component (C) is an amphoteric surfactant. Examples of the amphoteric surfactant include alkyl betaine, alkyl amide betaine, alkyl hydroxy sulfobetaine, alkyl amide hydroxy sulfobetaine, alkyl carboxymethyl hydroxyethyl imidazolinium betaine, alkyl amide hydroxyethyl amino acid type amphoteric surfactant, alkyl iminodiacetate, and the like.

[0038] The amphoteric surfactant usually has a cationic group containing a nitrogen atom. Examples of the acyl group bonded to the nitrogen atom in the cationic group include acyl groups derived from fatty acids having 8 to 18 carbon atoms. Examples of the fatty acid include saturated fatty acids such as caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, and isostearic acid; unsaturated fatty acids such as palmitoleic acid, oleic acid, elaidic acid, linoleic acid, and linolenic acid; and coconut oil fatty acid, palm kernel oil fatty acid, beef tallow fatty acid, hydrogenated beef tallow fatty acid, and the like, which are mixtures of these. The fatty acid forming the acyl group is preferably lauric acid, myristic acid, palmitic acid, oleic acid, coconut oil fatty acid, or palm kernel oil fatty acid, and more preferably lauric acid, coconut oil fatty acid, or palm kernel oil fatty acid.

[0039] The amphoteric surfactant usually has a cationic group containing a nitrogen atom. Examples of the aliphatic hydrocarbon group bonded to the nitrogen atom in the cationic group include aliphatic hydrocarbon groups having 8 to 18 carbon atoms. Examples of the aliphatic hydrocarbon group include octyl group, decyl group, lauryl group, myristyl group, palmityl group, stearyl group, oleyl group, and the like. The aliphatic hydrocarbon group may be a mixed alkyl group derived from mixed fatty acids. Examples of the mixed alkyl group include coconut oil alkyl group, palm kernel oil alkyl group, beef tallow alkyl group, and the like. The aliphatic hydrocarbon group is preferably lauryl group, myristyl group, palmityl group, coconut oil alkyl group, or palm kernel oil alkyl group, and more preferably lauryl group, coconut oil alkyl group, or palm kernel oil alkyl group.

[0040] Component (C) is preferably at least one selected from the group consisting of lauryl betaine, coconut fatty acid amide propyl betaine, palm kernel fatty acid amide propyl betaine, lauryl hydroxysulfobetaine, and sodium cocoamphoacetate, more preferably at least one selected from the group consisting of coconut fatty acid amide propyl betaine and lauryl hydroxysulfobetaine, even more preferably coconut fatty acid amide propyl betaine or lauryl hydroxysulfobetaine.

[0041] The content of component (C) relative to the entire detergent composition of the present invention is 1 to 20% by mass, preferably 3 to 15% by mass, more preferably 5 to 10% by mass. If the content of component (C) is too low, the viscosity of the detergent composition may become too low or its low-temperature stability may be poor, and the range where the foam reaches during hair washing may be narrow. If the content of component (C) is too high, the viscosity of the detergent composition may become too high.

[0042] 〔Component (D)〕 Component (D) is a compound represented by the following formula (2).

[0043]

Chemical formula

[0044] Hereinafter, the definitions of the symbols in formula (2) will be described in order. R in formula (2) 3 CO represents an aliphatic acyl group having 8 to 14 carbon atoms. Examples of the aliphatic acyl group having 8 to 14 carbon atoms include an octanoyl group, a decanoyl group, a lauroyl group, and a myristoyl group.

[0045] R 3CO is preferably an octanoyl group, a decanoyl group, a lauroyl group, or a myristoyl group, more preferably a decanoyl group, a lauroyl group, or a myristoyl group, and even more preferably a lauroyl group or a myristoyl group.

[0046] BO in formula (2) represents an oxybutylene group and is a group derived from 1,2-butylene oxide.

[0047] In formula (2), m is a number from 1 to 2. m corresponds to the average number of moles of added 1,2-butylene oxide and is the number of oxybutylene groups, which is actually an average value. Therefore, m may be a decimal. m is preferably from 1 to 1.8, and more preferably from 1 to 1.4.

[0048] Component (D) is preferably at least one selected from the group consisting of monobutylene glycol caprylate, monobutylene glycol caprate, monobutylene glycol laurate, monobutylene glycol myristate, dibutylene glycol caprate, dibutylene glycol laurate, and dibutylene glycol myristate, more preferably at least one selected from the group consisting of monobutylene glycol caprate, monobutylene glycol laurate, monobutylene glycol myristate, dibutylene glycol caprate, dibutylene glycol laurate, and dibutylene glycol myristate, even more preferably monobutylene glycol laurate, or a mixture of monobutylene glycol myristate and dibutylene glycol myristate.

[0049] The content of component (D) in the entire detergent composition of the present invention is 0.1 to 5% by mass, preferably 0.3 to 3% by mass, more preferably 0.5 to 2.5% by mass. When the content of component (D) is too small, the viscosity of the detergent composition may become too low, or the range where the foam reaches during hair washing may be narrow. When the content of component (D) is too large, component (D) may separate as an oil component, and the viscosity of the detergent composition may become too low, or its low-temperature stability may be poor.

[0050] 〔Component (E)〕 Component (E) is a compound represented by the following formula (3) or a salt thereof.

[0051]

Chemical formula

[0052] R in formula (3) 4 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms. Examples of the alkyl group having 1 to 4 carbon atoms include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an iso-butyl group, and a tert-butyl group. R 4 is preferably a hydrogen atom, a methyl group, or an ethyl group, more preferably a methyl group.

[0053] Examples of the salt of the compound of the above formula (3) include a sodium salt, a potassium salt, a magnesium salt, a calcium salt, a monoethanolamine salt, a diethanolamine salt, a triethanolamine salt, a hydrochloride salt, a sulfate salt, a citrate salt, a malate salt, and a lactate salt, but are not limited thereto. Among these, a sodium salt, a potassium salt, a triethanolamine salt, a hydrochloride salt, a citrate salt, a malate salt, and a lactate salt are preferred, and a sodium salt, a citrate salt, a malate salt, and a lactate salt are more preferred.

[0054] Component (E) is Preferably, it is at least one selected from the group consisting of β-alanine, N-methyl-β-alanine, N-ethyl-β-alanine, and N-tert-butyl-β-alanine, More preferably, it is at least one selected from the group consisting of N-methyl-β-alanine and N-ethyl-β-alanine, Even more preferably, it is N-methyl-β-alanine.

[0055] The content of component (E) in the detergent composition of the present invention is 0.001 to 1.0% by mass, preferably 0.002 to 0.6% by mass, more preferably 0.003 to 0.3% by mass. When the content of component (E) is too small, the low-temperature stability of the detergent composition may be poor, and the range where the foam reaches during hair washing may be narrow. When the content of component (E) is too large, the viscosity of the detergent composition may become too low, and the range where the foam reaches during hair washing may be narrow.

[0056] [(mass ratio of (content of component (A)) / (content of component (B))] The mass ratio of (content of component (A)) / (content of component (B)) (hereinafter sometimes referred to as "(A) / (B) mass ratio") in the detergent composition of the present invention is 0.1 to 0.9, preferably 0.2 to 0.8, more preferably 0.3 to 0.7. When the (A) / (B) mass ratio is too small, the viscosity of the detergent composition may not be suitable for use, and the range where the foam reaches during hair washing may be narrow. When the (A) / (B) mass ratio is too large, the viscosity of the detergent composition may become too high, or its low-temperature stability may be poor.

[0057] [(mass ratio of (total content of component (A) and content of component (B)) / (content of component (C))] In the detergent composition of the present invention, the mass ratio of (the total content of component (A) and the content of component (B)) / (the content of component (C)) (hereinafter sometimes referred to as "the mass ratio of {(A)+(B)} / (C)") is 0.2 to 4, preferably 0.3 to 3, more preferably 0.6 to 2. When the mass ratio of {(A)+(B)} / (C) is too small, the viscosity of the detergent composition may become too low, or the range where the foam reaches during hair washing may be narrow. When the mass ratio of {(A)+(B)} / (C) is too large, the viscosity of the detergent composition may become too low, its low-temperature stability may be poor, or the range where the foam reaches during hair washing may be narrow.

[0058] In the detergent composition of the present invention, the mass ratio of (the content of component (A)) / (the content of component (E)) (hereinafter sometimes referred to as "the mass ratio of (A) / (E)") is 15 to 300, preferably 25 to 150, more preferably 60 to 150. When the mass ratio of (A) / (E) is too small, the viscosity of the detergent composition may become too low, or the range where the foam reaches during hair washing may be narrow. When the mass ratio of (A) / (E) is too large, the low-temperature stability of the detergent composition may be poor, or the range where the foam reaches during hair washing may be narrow.

[0059] The detergent composition of the present invention contains water in addition to components (A) to (E). Examples of the water include purified water such as distilled water and ion-exchanged water, and tap water. Among these, purified water such as distilled water and ion-exchanged water is preferred.

[0060] The content of water in the entire detergent composition of the present invention is preferably 56 to 97% by mass, more preferably 60 to 92% by mass, still more preferably 70 to 87% by mass.

[0061] The detergent composition of the present invention may contain optional components other than components (A) to (E) and water (sometimes referred to as "other components" in this specification) as long as the effects of the present invention are not impaired. ​​​

[0062] Examples of other components include the following. Vegetable oils and animal fats; Hydrocarbon oils such as squalane, liquid paraffin, and hydrogenated polyisobutene; Higher alcohols such as cetyl alcohol, stearyl alcohol, and cetostearyl alcohol; Silicones such as cyclic silicone, dimethylpolysiloxane, and amino-modified polysiloxane; Ester oils such as 2-ethylhexyl palmitate, glyceryl tri(caprylate / caprate), and isopropyl myristate; Cationic surfactants such as stearyltrimethylammonium chloride, benzalkonium chloride, and cocoyl arginine ethyl PCA; Nonionic surfactants other than component (D) such as polyoxyethylene alkyl ether, polyglycerin fatty acid ester, polyoxyethylene glycerin fatty acid ester, fatty acid alkanolamide (e.g., lauric acid diethanolamide), and fatty acid alkylene glycol ester; Water-soluble polymers such as hydroxyethyl cellulose, polyethylene glycol, polyvinyl alcohol, carboxyvinyl polymer, cationized cellulose, cationized guar gum, and homopolymers or copolymers of dialkyldiallylammonium chloride (e.g., copolymer of diallyldimethylammonium chloride and acrylamide); Solvents such as ethanol, propylene glycol, and glycerin; pH adjusters such as sodium hydroxide, potassium hydroxide, monoethanolamine, triethanolamine, hydrochloric acid, sulfuric acid, citric acid, succinic acid, malic acid, lactic acid, and tartaric acid; Antioxidants such as tocopherol; Polysaccharides, amino acids, peptides, preservatives, fragrances, and coloring agents.

[0063] The content of other components relative to the entire detergent composition of the present invention is preferably 20% by mass or less, more preferably 0.3 to 15% by mass, and still more preferably 1.3 to 10% by mass. In addition, the total content of components (A) to (E) and water relative to the entire detergent composition of the present invention is preferably 80% by mass or more, more preferably 85 to 99.7% by mass, and still more preferably 90 to 98.7% by mass.

[0064] Among other components, nonionic surfactants are preferred. As the nonionic surfactant, fatty acid alkanolamides (for example, lauric acid diethanolamide) are preferred. When using a nonionic surfactant, its content relative to the entire detergent composition of the present invention is preferably 0.1 to 5% by mass, more preferably 0.5 to 3% by mass.

[0065] Among other components, water-soluble polymers are preferred. As the water-soluble polymer, cationized cellulose and homopolymers or copolymers of dialkyldiallylammonium chloride (for example, copolymers of diallyldimethylammonium chloride and acrylamide) are preferred. When using a water-soluble polymer, its content relative to the entire detergent composition of the present invention is preferably 0.1 to 1.5% by mass, more preferably 0.3 to 0.7% by mass.

[0066] Among other components, pH adjusters are preferred. As the pH adjuster, citric acid, malic acid, and lactic acid are preferred, and citric acid and lactic acid are more preferred. When using a pH adjuster, its content relative to the entire detergent composition of the present invention is preferably 0.05 to 5% by mass, more preferably 0.1 to 3% by mass, and still more preferably 0.5 to 2% by mass.

[0067] The pH of the detergent composition of the present invention at 25°C is not particularly limited, but is preferably 4.5 to 8.0, more preferably 5.0 to 7.5, and still more preferably 5.5 to 7.0. The pH of the detergent composition in this specification is the value measured by JIS Z8802 using a pH meter.

[0068] The detergent composition of the present invention can be produced according to a known method. For example, by mixing the above components (A) to (E), water, and optionally other components, heating if necessary, and stirring, the detergent composition of the present invention can be obtained.

Examples

[0069] Hereinafter, the present invention will be specifically described with reference to Examples and Comparative Examples, but the present invention is not limited to these Examples at all.

[0070] The components (A) to (E) used in the following Examples and the like are as follows. <Component (A)> (A-1) Sodium N-lauroyl-N-methyl-β-alaninate (R in formula (1) 1 CO = lauroyl group, R 2 = methyl group, M n+ = sodium ion, n = 1) (A-2) N-lauroyl-N-methyl-β-alanine triethanolamine (R in formula (1) 1 CO = lauroyl group, R 2 = methyl group, M n+ = triethanolammonium ion, n = 1) (A-3) Sodium N-coconut fatty acid acyl-β-alaninate (R in formula (1) 1 CO = coconut fatty acid acyl group, R 2 = hydrogen atom, M n+ = sodium ion, n = 1)

[0071] <Component (B)> (B-1) Sodium N-coconut fatty acid acyl-N-methyltaurine (B-2) Sodium N-coconut fatty acid acylglutamate (B-3) Sodium polyoxyethylene (3) lauryl ether sulfate

[0072] <Component (C)> (C-1) Coconut fatty acid amidopropyl betaine (C-2) Lauryl hydroxysulfobetaine

[0073] <Component (D)> (D-1) Monobutylene glycol laurate (R in formula (2) 3 CO = lauroyl group, m = 1.0) (D-2) Mixture of monobutylene glycol myristate and dibutylene glycol myristate (R in formula (2) 3 CO = myristoyl group, m = 1.1) (D-3) Mixture of monobutylene glycol caprate and dibutylene glycol caprate (R in formula (2) 3 CO = decanoyl group, m = 1.6)

[0074] <Component (E)> (E-1) N-Methyl-β-alanine (R in formula (3) 4 = methyl group) (E-2) N-Ethyl-β-alanine (R in formula (3) 4 = ethyl group)

[0075] [Examples 1 to 16 and Comparative Examples 1 to 11] <Preparation of Detergent Composition> Each component was sequentially added to purified water in the amounts shown in Tables 1-1 to 2-2, mixed, and uniformly dissolved to prepare the detergent compositions of Examples 1 to 16 and Comparative Examples 1 to 11.

[0076] For the obtained detergent compositions, evaluation was performed on viscosity, foaming area, and low-temperature stability as described in the following (1) to (3). The pH of the detergent compositions in Tables 1-1 to 2-2 is the pH at 25 °C of the detergent compositions with the component amounts shown in Tables 1-1 to 2-2 without dilution with water. The results are shown in Tables 1-1 to 2-2.

[0077] <Evaluation of Detergent Composition> (1) Viscosity The viscosity of the obtained detergent composition was measured at 25°C using a B-type viscometer ("TV-20" manufactured by Toki Sangyo Co., Ltd.) with rotors No. 2 to 4 at a speed of 12 rpm or 30 rpm. Based on the measured viscosity (mPa·s, 25°C), the viscosity of the detergent composition was evaluated according to the following criteria. The cases where the evaluation was "◎" and "○" were regarded as passing. <Evaluation Criteria> ◎: Viscosity is 2,000 mPa·s or more and less than 10,000 mPa·s ○: Viscosity is 1,000 mPa·s or more and less than 2,000 mPa·s, or 10,000 mPa·s or more and less than 20,000 mPa·s △: Viscosity is less than 1,000 mPa·s ×: Viscosity is 20,000 mPa·s or more

[0078] (2) Foaming Area Hair (human black hair (aligned at the roots), manufactured by Bureaulex Co., Ltd., product number: BS-B3A, 10 g, 30 cm) was washed with 2 g of an aqueous solution of 25% by mass of sodium polyoxyethylene lauryl ether sulfate, rinsed thoroughly with tap water at 40°C, and hair with dirt removed was prepared. Take 0.1 g of the obtained detergent composition in one hand, further rinse the hair with dirt removed thoroughly with tap water at 40°C, and place 10 cm from the root on the hand with the detergent composition while the hair is still wet. Note that the remaining 20 cm of the hair protrudes from the hand. Then, use the other hand to foam the hair for 10 seconds, slide the hair on the hand with the detergent composition, and shampoo the hair for 10 seconds in the same way for the part of the hair from 10 to 20 cm from the root. Finally, slide the hair so that the part from 20 to 30 cm from the root is on the hand with the detergent composition, and shampoo the hair for 10 seconds again. Based on the amount of foaming up to the hair tip, the foaming area of the detergent composition was evaluated according to the following criteria. The cases where the evaluation was "◎" and "○" were regarded as passing. <Evaluation Criteria> ◎: All three parts showed an equal amount of foaming ○: The amount of foaming was equal from 0 to 10 cm and from 10 to 20 cm from the root, and foaming was also confirmed at 20 to 30 cm △: Almost no foaming occurred at 20 - 30 cm from the root ×: Almost no foaming occurred at 10 - 20 cm and 20 - 30 cm from the root

[0079] (3) Low - temperature stability The obtained detergent composition was sealed in a transparent glass container and stored at 0 °C or 5 °C for 1 month respectively, and its appearance was observed. Based on the observed appearance, the low - temperature stability of the detergent composition was evaluated according to the following criteria. The case where the evaluation was "○" was regarded as passing. <Evaluation criteria> ○: No change in appearance at both 0 °C and 5 °C △: No change in appearance at 5 °C, but the detergent composition changed to a cloudy state at 0 °C ×: The detergent composition changed to a cloudy state at both 0 °C and 5 °C

[0080]

Table 1 - 1

[0081]

Table 1 - 2

[0082]

Table 2 - 1

[0083]

Table 2 - 2

[0084] The detergent compositions of Examples 1 - 16 all had good viscosity, foaming area, and low - temperature stability. On the other hand, since the detergent composition of Comparative Example 1 did not contain component (A), its viscosity was low and the foaming area was also narrow. Since the detergent composition of Comparative Example 2 does not contain component (B), the foaming area was narrow and the low-temperature stability was also insufficient.

[0085] Since the detergent composition of Comparative Example 3 does not contain component (C), the viscosity was low, the foaming area was narrow, and the low-temperature stability was also insufficient. Since the detergent composition of Comparative Example 4 does not contain component (D), the viscosity was low and the foaming area was also narrow. Since the detergent composition of Comparative Example 5 contains more than 5% by mass of component (D), the viscosity was low and the low-temperature stability was also poor.

[0086] Since the detergent composition of Comparative Example 6 does not contain component (E), the foaming area was narrow and the low-temperature stability was also insufficient. Since the detergent composition of Comparative Example 7 contains more than 1.0% by mass of component (E) and the mass ratio of (A) / (E) is less than 15, the viscosity was low and the foaming area was also narrow. Since the detergent composition of Comparative Example 8 has a mass ratio of (A) / (B) of less than 0.1, the viscosity was low and the foaming area was also narrow.

[0087] Since the detergent composition of Comparative Example 9 has a mass ratio of (A) / (B) greater than 0.9, the viscosity was high and the low-temperature stability was also insufficient. Since the detergent composition of Comparative Example 10 has a mass ratio of {(A)+(B)} / (C) of less than 0.2, the viscosity was low and the foaming area was also narrow. Since the hair detergent composition of Comparative Example 11 has a mass ratio of {(A)+(B)} / (C) greater than 4, the viscosity was low, the foaming area was narrow, and the low-temperature stability was also insufficient.

[0088] <Formulation Examples 1 and 2> Furthermore, Formulation Examples 1 and 2 of the detergent composition of the present invention are shown below.

[0089] [Table 3]

[0090] Note that the mass ratio of (A) / (B) in the detergent composition of Formulation Example 1 is 0.6, the mass ratio of {(A)+(B)} / (C) is 1.5, and the mass ratio of (A) / (E) is 70.

[0091]

Table 4

[0092] Note that the mass ratio of (A) / (B) in the detergent composition of Formulation Example 2 is 0.4, the mass ratio of {(A)+(B)} / (C) is 1.5, and the mass ratio of (A) / (E) is 63.

[0093] When the evaluations (1) to (3) above were also carried out on the detergent compositions of Formulation Examples 1 and 2, since these had an appropriate viscosity, a wide range where the foam reached during hair washing, and good low-temperature stability, the effects of the present invention were recognized.

Industrial Applicability

[0094] The detergent composition of the present invention has a viscosity suitable for use as a detergent, has low-temperature stability that can maintain a transparent appearance even at low temperatures in winter, and the foam reaches a wide range during hair washing, so it is easy to use and can give a comfortable washing feeling with a small amount.

Claims

【Claim 1】 The following components (A) to (E): (A) Formula (1): 【Chemical Formula 1】 (wherein, R １ CO represents an aliphatic acyl group having 8 to 22 carbon atoms, R ２ represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, M ｎ＋ represents an alkali metal ion, an alkaline earth metal ion, an ammonium ion, or an organic ammonium ion, and n represents 1 or 2.) The surfactant represented by, (B) An anionic surfactant other than component (A), (C) Amphoteric surfactant, (D) Formula (2): 【Chemical Formula 2】 (In the formula, R ３ CO represents an aliphatic acyl group having 8 to 14 carbon atoms, BO represents an oxybutylene group, m represents a number from 1 to 2.) The compound represented by, (E) Formula (3): [Chemical Formula 3] (wherein, R ４ represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.) The compound represented by or a salt thereof, and water A hair cleansing composition containing, With respect to the entire hair cleansing composition, the content of component (A) is 0.1 to 10% by mass, the content of component (B) is 1 to 20% by mass, the content of component (C) is 1 to 20% by mass, the content of component (D) is 0.1 to 5% by mass, and the content of component (E) is 0.001 to 1.0% by mass, The mass ratio of (content of component (A)) / (content of component (B)) is 0.1 to 0.9, The mass ratio of (total content of component (A) and component (B)) / (content of component (C)) is 0.2 to 4, and A hair cleansing composition in which the mass ratio of (content of component (A)) / (content of component (E)) is 15 to 300.

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