Hair cosmetic

Abstract

To provide a hair cosmetic having improved hair-style-fixing effect and a hair treatment method.SOLUTION: [1] A hair cosmetic comprises (A) at least one anionic polymer selected from a crosslinked poly(acrylic acid) and an acrylate / (C10-C30)alkyl acrylate crosspolymer, (B) an anionic surfactant, and (C) a cationic polymer having a cellulose skeleton. [2] A hair treatment method comprises a step in which the hair cosmetic is applied to hair and a step in which the hair to which the hair cosmetic has been applied is rinsed with water.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a hair cosmetic and a hair treatment method.

Background Art

[0002] In recent years, hair cosmetics have been increasingly expected to have a conditioning effect that can impart smoothness, softness, and cohesion to hair. Techniques for imparting smoothness, softness, and cohesion to hair by blending cationic polymers and anionic polymers have already been reported.

[0003] For example, Patent Document 1 describes that a hair treatment agent containing (A) a cationic polysaccharide, (B) a specific crosslinked cationic polymer, (C) a fatty acid or its salt, and (D) a cationic surfactant can make hair less likely to tangle, suppress stickiness during rinsing, impart smoothness to hair, and maintain the cohesion and smoothness of hair until the next hair wash.

[0004] Patent Document 2 describes that a hair cleaning composition containing (A) an anionic surfactant, (B) a crosslinked cationic polymer, hydrophobic cationized hydroxyethyl cellulose, and water is excellent in preventing hair from becoming loose during rinsing, being non-tangled, non-grating, and rich, and can dry wet hair after hair washing in a short time.

[0005] Patent Document 3 describes a hair cleaning composition containing component (A): an anionic surfactant, component (B): a cationic polymer, component (C): a polymer containing a specific structural unit, and water, wherein the mass ratio ((B) / (C)) of the content of component (B) to the content of component (C) in the hair cleaning composition is in a specific range, and the hair cleaning composition is less likely to have bedhead and imparts favorable cohesion, smoothness, and softness to the touch to the hair.

Prior Art Documents

Patent Documents

[0006] Patent Document 1 Japanese Unexamined Patent Application Publication No. 2017-210413 Patent Document 2 Japanese Unexamined Patent Application Publication No. 2017-88516 Patent Document 3 Japanese Unexamined Patent Application Publication No. 2017-137254 Summary of the Invention Problems to be Solved by the Invention

[0007] In recent years, hair cosmetics have been provided with new functions such as suppressing hair curls and imparting a hair unity. However, the technology for controlling the shape of the hair itself has not been established. Therefore, there is a demand for a function of bundling hair to give a certain shape and fixing that shape, for example, a function of bundling curly hair or other curly hair and fixing it in a straight shape or fixing it in a bundled wave shape. The hair cosmetics in Patent Documents 1 to 3 above had room for improvement in terms of the hair shape fixing power. The present invention relates to a hair cosmetic and a hair treatment method with improved hair shape fixing power. Means for Solving the Problems

[0008] The present inventors have found that a hair cosmetic containing (A) at least one anionic polymer selected from a crosslinked polyacrylic acid and an (acrylates / acrylic acid alkyl (C10-30)) copolymer, (B) an anionic surfactant, and (C) a cationic polymer having a cellulose backbone can improve the hair shape fixing power, and have completed the present invention.

[0009] That is, the present invention relates to the following [1] and [2]. [1] A hair cosmetic containing the following components (A) to (C). (A) At least one anionic polymer selected from a crosslinked polyacrylic acid and an (acrylates / acrylic acid alkyl (C10-30)) copolymer (B) Anionic surfactant (C) Cationic polymer having a cellulose backbone [2] A hair treatment method comprising a step of applying the hair cosmetic according to [1] to hair and a step of rinsing the hair to which the hair cosmetic has been applied with water. [Advantages of the Invention]

[0010] According to the present invention, it is possible to provide a hair cosmetic and a hair treatment method with improved hair shape fixing power. [Brief Description of the Drawings]

[0011]

Figure 1

[0012] [Hair Cosmetic] The hair cosmetic of the present invention contains the following components (A) to (C). (A) At least one anionic polymer selected from crosslinked polyacrylic acid and (acrylates / acrylic acid alkyl (C10-30)) crosspolymer (B) Anionic surfactant (C) Cationic polymer having a cellulose backbone In the present invention, "containing component X" shall be regarded as synonymous with "being formulated with component X".

[0013] The hair cosmetic composition of the present invention can improve the shape fixing power for fixing the shape of the bundled hair while tying hair into a certain shape, and therefore can be suitably applied, particularly when styling unruly hair such as curled hair into a straight or neat wavy shape, since it can reduce the time and effort required and can maintain the created shape for a long time. FIG. 1 is a diagram for explaining fixation of hair shape, and shows a photograph of a hair bundle hung with its upper end fixed, viewed from the front. (a) shows an untreated evaluation hair bundle, and (b) shows the untreated evaluation hair bundle of (a) after it has been treated with the hair cosmetic product of the present invention, straightened with a ring comb, and completely dried with a hair dryer. That is, in the present invention, "hair shape fixing power" refers to the power to strongly fix the shape of, for example, curled hair as shown in Fig. 1(a) by bundling it into a straight shape as shown in Fig. 1(b), and maintaining the shape even after drying. Note that in the present invention, "fixing the hair shape" refers to a state in which hairs are bound together and the hair bundle is fixed in a certain shape, which is different from "tidy hair" which refers to a state in which the hair line is beautiful and not disturbed from the top to the tip.

[0014] The reason why the hair cosmetic composition of the present invention having the above-mentioned composition exhibits the effects of the present invention is presumed to be as follows. The hair cosmetic composition of the present invention contains, as component (A), at least one anionic polymer selected from crosslinked polyacrylic acid and (acrylates / C10-30 alkyl acrylate) crosspolymer, as component (B) an anionic surfactant, and as component (C) a cationic polymer having a cellulose skeleton. Component (A) which is an anionic polymer, component (B) which is an anionic surfactant, and component (C) which is a cationic polymer can form a complex gel through interaction with each other. When rinsing the hair to which the hair cosmetic of the present invention is applied, the component (B), which is an excessive anionic surfactant, is washed away, and the complex gel is deposited on the hair surface, and it is considered that a complex gel film having adhesiveness is formed on the hair surface. It is considered that the hair on which the complex gel film having adhesiveness is formed is fixed in shape by the complex gel film causing the hairs to bind to each other and support each other. Here, since the component (C) has excellent adhesiveness to hair, it is likely to be adsorbed uniformly over the entire hair. Further, since the above components (A) and (C) have excellent water retention, the binding force of the complex gel film can be improved. Therefore, the hair cosmetic of the present invention can uniformly form a film with good binding force over the entire hair by combining the components (A) to (C). Thus, it is considered that the hair fixing force for fixing the shape of the bundled hair can be improved while bundling the hair and imparting a certain shape.

[0015] Examples of the embodiment of the hair cosmetic of the present invention include hair cleaning agents such as hair shampoos, hair rinses, hair conditioners, hair treatments, hair packs, hair styling agents, and the like. Among these, from the viewpoint of more effectively exhibiting the effects of the present invention, those used after shampooing are preferred, and those used in a mode of being rinsed after getting used to the hair are more preferred. From such a viewpoint, as the hair cosmetic of the present invention, a hair rinse, a hair conditioner, a hair treatment, a hair pack or a hair styling agent is preferred. The dosage form of the hair cosmetic of the present invention can be any dosage form such as liquid, foamy, paste-like, cream-like, etc. Among these, from the viewpoints of ease of use and the like, it is preferably liquid, paste-like or cream-like, and more preferably liquid.

[0016] <Component (A): Anionic polymer> The hair cosmetic of the present invention contains at least one anionic polymer selected from crosslinked polyacrylic acid and (acrylates / acrylic acid alkyl (C10-30)) cross polymer as the component (A). Component (A) is more preferably crosslinked polyacrylic acid.

[0017] As the crosslinked polyacrylic acid, carboxyvinyl polymer, that is, carbomer in INCI name, is preferable. Carbomer is a polymer of acrylic acid crosslinked with pentaerythrityl allyl ether, sucrose allyl ether or propylene allyl ether. Component (A) forms a complex gel by interacting with component (C), which is a cationic polymer having cationicity. The water retention improvement effect of the hair by the complex gel and the effect of binding the hairs together can improve the hair shape fixing power. (Acrylates / C10-30 Alkyl Acrylate Cross Polymer) is a copolymer of one or more monomers composed of acrylic acid, methacrylic acid or their simple esters and alkyl acrylate (C10-30) crosslinked with allyl ether of sucrose or allyl ether of pentaerythritol, and its INCI name is Acrylates / C10-30 Alkyl Acrylate Cross Polymer.

[0018] The anionic polymer of component (A) is preferably a polymer of acrylic acid. Also, the content of the structural unit derived from alkyl methacrylate in the anionic polymer of component (A) is preferably 5% by mass or less, more preferably 1% by mass or less, still more preferably 0.5% by mass or less, still more preferably 0.1% by mass or less, and it is still more preferable that the anionic polymer of component (A) does not contain alkyl methacrylate as a constituent monomer. Therefore, in an aqueous medium, the hair shape fixing power can be further improved by the interaction with component (C) compared with a polymer containing alkyl methacrylate, which is less hydrophilic than acrylic acid, as a monomer structural unit. Also, the polymer of component (A) is preferably crosslinked. Since component (A) is a crosslinked polymer, the water retention improvement effect of the hair is high and the hair shape fixing power can be further improved.

[0019] Examples of commercially available carbomers include Carbopol (registered trademark; hereinafter, the notation will be omitted) 980, Carbopol 981 (both manufactured by Lubrizol Corporation), etc. Examples of commercially available (acrylates / alkyl acrylates (C10-30)) crosspolymers include Carbopol ETD 2020 (manufactured by Lubrizol Corporation), etc.

[0020] Component (A) may be used alone or in combination of two or more.

[0021] From the viewpoint of further improving the hair shape fixing power, the content of component (A) in the hair cosmetic of the present invention is preferably 0.01% by mass or more, more preferably 0.03% by mass or more, still more preferably 0.05% by mass or more, still more preferably 0.08% by mass or more, still more preferably 0.10% by mass or more, still more preferably 0.20% by mass or more. From the same viewpoint, it is preferably 5.0% by mass or less, more preferably 3.0% by mass or less, still more preferably 1.0% by mass or less, still more preferably 0.80% by mass or less. Considering these viewpoints comprehensively, the content of component (A) in the hair cosmetic of the present invention is preferably 0.01% by mass or more and 5.0% by mass or less, more preferably 0.03% by mass or more and 3.0% by mass or less, still more preferably 0.05% by mass or more and 1.0% by mass or less, still more preferably 0.08% by mass or more and 0.80% by mass or less, still more preferably 0.10% by mass or more and 0.80% by mass or less, still more preferably 0.20% by mass or more and 0.80% by mass or less.

[0022] <Component (B): Anionic surfactant> The hair cosmetic of the present invention contains an anionic surfactant as component (B). Examples of the anionic surfactant include polyoxyethylene alkyl ether sulfate, alkylbenzene sulfonate, α-olefin sulfonate, internal olefin sulfonate, alkyl or alkenyl sulfate, alkyl sulfonate, saturated or unsaturated fatty acid salt, alkyl or alkenyl ether carboxylate, α-sulfo fatty acid salt, N-acyl amino acid salt, phosphoric acid mono- or diester salt, sulfosuccinic acid ester salt, etc., and one or more of these can be used.

[0023] From the viewpoints of detergency, good foaming property, feel of foam, formulation stability, and availability, etc., component (B) preferably contains at least one selected from the group consisting of α-olefin sulfonate, internal olefin sulfonate, and polyoxyethylene alkyl ether sulfate, and more preferably contains polyoxyethylene alkyl ether sulfate. Examples of the polyoxyethylene alkyl ether sulfate include compounds represented by the following formula (I). R 1 -O-(CH2CH2O) p -SO3Y (I) In formula (I), R 1 represents a linear or branched alkyl group having 8 or more and 22 or less carbon atoms. p represents the average number of added moles and is a number of 0.25 or more and 20 or less. Y represents an alkali metal, alkaline earth metal, ammonium, alkanolamine, or basic amino acid.

[0024] R 1 The number of carbon atoms of the linear or branched alkyl group in R is preferably 8 or more and 18 or less, more preferably 10 or more and 18 or less, from the viewpoints of detergency, good foaming property, feel of foam, formulation stability, and availability. R in formula (I) 1Specific examples thereof include a 2-ethylhexyl group, an n-octyl group, a nonyl group, an n-decyl group, an isodecyl group, an undecyl group, an n-dodecyl group, a lauryl group, a tridecyl group, a myristyl group, a pentadecyl group, a palmityl group, a heptadecyl group, a stearyl group, an isostearyl group, a nonadecyl group, an icosyl group, a henicosyl group, and a docosyl group. Among these, R 1 is preferably a linear alkyl group, more preferably one or more selected from the group consisting of an n-octyl group, an n-decyl group, a lauryl group, a myristyl group, a cetyl group, and a stearyl group, still more preferably one or more selected from the group consisting of an n-decyl group, a lauryl group, a myristyl group, a cetyl group, and a stearyl group, and still more preferably a lauryl group. Furthermore, R 1 may be an alkyl group derived from a plurality of fatty acids contained in natural products such as coconut oil, palm oil, palm kernel oil, soybean oil, rapeseed oil, beef tallow, lard, or fish oil. In this case, the compound represented by the formula (I) is obtained as a mixture of a plurality of compounds having different alkyl groups.

[0025] In the formula (I), p represents the average number of added moles and is a number of 0.25 or more and 20 or less. From the viewpoints of detergency, foamability, feel of foam, formulation stability, and availability, p is preferably 0.5 or more, preferably 15 or less, more preferably 10 or less, and still more preferably 5 or less. In the formula (I), Y represents an alkali metal, an alkaline earth metal, ammonium, an alkanolamine, or a basic amino acid, and is preferably an alkali metal or ammonium. As the alkali metal, lithium, sodium, or potassium is preferable. Ammonium may be alkylammonium or alkanolammonium. From the viewpoints of detergency, foamability, feel of foam, formulation stability, and availability, Y is preferably one or more selected from the group consisting of sodium, potassium, and ammonium, more preferably one or more selected from the group consisting of sodium and ammonium.

[0026] Specific examples of the polyoxyethylene alkyl ether sulfate represented by the formula (I) include sodium lauryl sulfate, ammonium lauryl sulfate, etc., in which the average number of moles p of added oxyethylene groups is 0.25 to 20, preferably 0.5 to 15, more preferably 0.5 to 10, and still more preferably 1 to 5. Specific examples of sodium lauryl sulfate include "Emal 227HP", "Emal 125HP", etc. manufactured by Kao Corporation, and specific examples of ammonium lauryl sulfate include "Emal 170S-A" etc. manufactured by Kao Corporation.

[0027] From the viewpoints of detergency, good foaming property, foam feel, formulation stability, and availability, the number of carbon atoms of the α-olefin sulfonate is preferably 8 or more and 22 or less, more preferably 8 or more and 18 or less, and still more preferably 10 or more and 18 or less. Examples of the counter ion of the α-olefin sulfonic acid constituting the α-olefin sulfonate include alkali metal ions such as sodium ions and potassium ions; alkaline earth metal ions such as calcium ions and magnesium ions; ammonium ions; alkanolammonium having 1 to 3 alkanol groups having 2 or 3 carbon atoms (for example, monoethanolammonium, diethanolammonium, triethanolammonium, triisopropanolammonium, etc.). From the viewpoints of detergency, good foaming property, foam feel, formulation stability, and availability, the counter ion of the α-olefin sulfonic acid is preferably one or more selected from the group consisting of sodium, potassium, and ammonium, and more preferably sodium. Specific examples of the α-olefin sulfonate include sodium sulfonate of α-olefin having preferably 8 or more and 22 or less carbon atoms, more preferably 10 or more and 18 or less carbon atoms.

[0028] The internal olefin sulfonate can be obtained, for example, by sulfonating, neutralizing, and hydrolyzing an internal olefin in which the double bond is in the interior (at the 2nd position or higher) of the olefin chain. The number of carbon atoms of the internal olefin sulfonate is preferably 8 or more and 22 or less, more preferably 8 or more and 18 or less, still more preferably 10 or more and 18 or less, from the viewpoints of detergency, foamability, foam feel, formulation stability, and availability. The internal olefin of the internal olefin sulfonate is an olefin having a double bond inside the olefin chain, and in a broad sense, it includes the case where a trace amount of a so-called α-olefin having the double bond at the 1-position of the carbon chain is contained. When the internal olefin is sulfonated, β-sultone is quantitatively produced, and a part of the β-sultone is changed to γ-sultone and olefin sulfonic acid, and further these are converted to hydroxyalkane sulfonate and internal olefin sulfonate by the neutralization and hydrolysis steps. Here, the hydroxy group of the obtained hydroxyalkane sulfonate is inside the alkane chain, and the double bond of the internal olefin sulfonate is inside the olefin chain. Examples of the counter ion of the internal olefin sulfonic acid constituting the internal olefin sulfonate include alkali metal ions such as sodium ion and potassium ion; alkaline earth metal ions such as calcium ion and magnesium ion; ammonium ion; alkanolammonium having 1 to 3 alkanol groups having 2 or 3 carbon atoms (for example, monoethanolammonium, diethanolammonium, triethanolammonium, triisopropanolammonium, etc.). The counter ion of the internal olefin sulfonic acid is preferably one or more selected from the group consisting of sodium, potassium, and ammonium, more preferably sodium, from the viewpoints of detergency, foamability, foam feel, formulation stability, and availability.

[0029] Examples of anionic surfactants other than α-olefin sulfonates, internal olefin sulfonates, and polyoxyethylene alkyl ether sulfates include alkylbenzene sulfonates, alkyl or alkenyl sulfates, alkyl sulfonates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, α-sulfo fatty acid salts, N-acyl amino acid salts, phosphate mono- or diester salts, sulfosuccinic acid ester salts, etc. One or more of these can be used. The hydrocarbon groups such as alkyl groups and alkenyl groups, or the constituent fatty acids of the above anionic surfactants other than α-olefin sulfonates, internal olefin sulfonates, and polyoxyethylene alkyl ether sulfates preferably have 8 to 22 carbon atoms, more preferably 8 to 18 carbon atoms, still more preferably 10 to 18 carbon atoms.

[0030] Examples of the counter ions of the anionic groups of the above anionic surfactants other than α-olefin sulfonates, internal olefin sulfonates, and polyoxyethylene alkyl ether sulfates include alkali metal ions such as sodium ions and potassium ions; alkaline earth metal ions such as calcium ions and magnesium ions; ammonium ions; alkanolammonium having 1 to 3 alkanol groups with 2 or 3 carbon atoms (for example, monoethanolammonium, diethanolammonium, triethanolammonium, triisopropanolammonium, etc.).

[0031] Among the above, as anionic surfactants other than polyoxyethylene alkyl ether sulfates, from the viewpoints of detergency, good foaming property, foam feel, formulation stability, and availability, one or more selected from the group consisting of alkyl sulfates, α-olefin sulfonates, internal olefin sulfonates, N-acyl amino acid salts, and alkyl ether carboxylates are preferred. Examples of the alkyl sulfate include sodium lauryl sulfate. Examples of the alkyl ether carboxylate include polyoxyethylene alkyl ether acetates such as sodium laureth acetate. Examples of the N-acyl amino acid salt include cocoalanine salt.

[0032] Component (B) may be used alone or in combination of two or more.

[0033] From the viewpoint of further improving the hair shape fixing power, the content of component (B) in the hair cosmetic of the present invention is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, still more preferably 0.3% by mass or more, still more preferably 0.4% by mass or more, still more preferably 0.5% by mass or more. From the same viewpoint, it is preferably 10% by mass or less, more preferably 8.0% by mass or less, still more preferably 7.0% by mass or less. Considering these viewpoints comprehensively, the content of component (B) in the hair cosmetic of the present invention is preferably 0.1% by mass or more and 10% by mass or less, more preferably 0.2% by mass or more and 8.0% by mass or less, still more preferably 0.3% by mass or more and 7.0% by mass or less, still more preferably 0.4% by mass or more and 7.0% by mass or less, still more preferably 0.5% by mass or more and 7.0% by mass or less.

[0034] <Component (C): Cationic polymer having a cellulose backbone> The hair cosmetic of the present invention contains a cationic polymer having a cellulose backbone as component (C). In the present invention, the "cationic polymer having a cellulose backbone" means a polymer having a cationic group and a cellulose backbone and having an overall cationic charge. The cationic group means a cationic group or a group that can be ionized to become a cationic group. For example, it means a quaternary ammonium group or a tertiary amino group that can be converted into a tertiary amino group by adding a proton.

[0035] Examples of the cationic polymer having a cellulose backbone include cationized cellulose derivatives, specifically, one or more selected from the group consisting of cationized cellulose, cationized hydroxyethyl cellulose, cationized hydroxypropyl cellulose, and cationized carboxymethyl cellulose. Among these, from the viewpoint of forming the composite gel film, cationized hydroxyethyl cellulose is preferred.

[0036] In addition, from the viewpoint of further improving the hair shape fixing power, the cationic polymer having a cellulose backbone preferably contains a hydrophobic cationized cellulose. Examples of the hydrophobic cationized cellulose of component (C) include hydrophobic cationized hydroxyethyl cellulose and hydrophobic cationized hydroxypropyl cellulose, and hydrophobic cationized hydroxyethyl cellulose is preferred.

[0037] From the viewpoint of further improving the hair shape fixing power, the hydrophobic cationized hydroxyethyl cellulose preferably has a main chain derived from anhydroglucose represented by the following formula (3), and the average molar number of cationized ethyleneoxy groups per anhydroglucose unit is 0.01 to 3.0, and the average molar number of ethyleneoxy groups is 0.5 to 4.0.

[0038] [Chemical formula] In formula (3), R 7 , R 8 and R 9 each independently represent a substituent having a cationized ethyleneoxy group and an ethyleneoxy group represented by the following formula (4), and n represents the average degree of polymerization of anhydroglucose and represents a number from 50 to 5000.

[0039] R 7 , R 8 and R 9 in formula (3) are groups represented by formula (4), and may be the same or different. Also, n R's7 , n Rs 8 , n Rs 9 may be the same or different from each other.

[0040] [Chemical formula]

[0041] In formula (4), Y 2 and Y 3 One of them represents a hydrogen atom, and the other represents a cationic group represented by the following formula (5). p is the number of ethyleneoxy groups contained in formula (4), and q is the number of cationized ethyleneoxy groups (-CH(Y 2 )-CH(Y 3 )-O-), and each is 0 or a positive integer. When neither p nor q is 0, the addition order of the cationized ethyleneoxy group and the ethyleneoxy group is not limited. Further, when p and / or q is 2 or more, it may be either a block bond or a random bond. When there are a plurality of substituents represented by formula (4) in the molecule, the values of p and q may be different between the substituents, but at least one of them has q of 1 or more.

[0042] [Chemical formula] In formula (5), R 10 ~R 12 each independently represents a linear or branched alkyl group having 1 to 18 carbon atoms, and X - represents an anionic group. However, at least one of the Rs 12 present in the molecule is a linear or branched alkyl group having 8 to 18 carbon atoms.

[0043] In formula (5), examples of R 10 ~R 12 include a methyl group, an ethyl group, an n-propyl group, an n-butyl group, an n-octyl group, an n-decyl group, an n-dodecyl group, an n-tetradecyl group, an n-hexadecyl group, and an n-octadecyl group. R 10and R 11 Examples of R include a methyl group, an ethyl group, an n-propyl group, an n-butyl group, an n-octyl group, an n-decyl group, and an n-dodecyl group, with a methyl group being preferred and a methyl group being more preferred. R 12 Examples of R include a methyl group, an n-octyl group, an n-decyl group, and an n-dodecyl group, with a methyl group and an n-dodecyl group being preferred and a methyl group and an n-dodecyl group being more preferred.

[0044] In formula (5), X - is an anionic group that is a counter ion of ammonium, and specific examples thereof include an alkyl sulfate ion, a sulfate ion, a phosphate ion, an alkyl carbonate ion, and a halide ion. Among these, from the viewpoint of ease of production, a halide ion is preferred. Examples of the halide ion include a fluoride ion, a chloride ion, a bromide ion, and an iodide ion. From the viewpoints of water solubility and chemical stability of component (C), a chloride ion and a bromide ion are preferred, and a chloride ion is more preferred.

[0045] As component (C), commercially available polymers can also be used. Examples of the cationic polymer having a cellulose skeleton include a polymer of a quaternary ammonium salt obtained by adding trimethylammonium-substituted epoxide and lauryldimethylammonium-substituted epoxide to hydroxyethyl cellulose (INCI name: Polyquaternium-67), a polymer of a quaternary ammonium salt obtained by adding glycidyltrimethylammonium chloride to hydroxyethyl cellulose (INCI name: Polyquaternium-10), a polymer of a quaternary ammonium salt obtained by addition polymerization of glycidyl lauryldimethylammonium chloride to hydroxyethyl cellulose (INCI name: Polyquaternium-24), a polymer of a quaternary ammonium salt obtained by adding coconut oil alkyldimethylammonium-substituted epoxide to hydroxyethyl cellulose (INCI name: Polyquaternium-72), "Kachisero L-150" manufactured by Kao Corporation, and the like. Among these, at least one selected from Polyquaternium-67 and Polyquaternium-10 is preferred, and Polyquaternium-67 is more preferred.

[0046] From the viewpoint of further improving the power to fix the hair shape, the component (C) preferably contains both of the following components (C1) and (C2). (C1) The hydrophobic cationized hydroxyethyl cellulose (C2) A cationic polymer having a cellulose skeleton other than (C1)

[0047] As component (C2), cationized hydroxyethyl cellulose other than component (C1) is preferred, and a polymer of quaternary ammonium salt obtained by adding glycidyl trimethylammonium chloride to hydroxyethyl cellulose (INCI name: Polyquaternium-10) is more preferred. Also, as component (C1) to be combined with component (C2), a polymer of quaternary ammonium salt obtained by adding trimethylammonium-substituted epoxide and lauryldimethylammonium-substituted epoxide to hydroxyethyl cellulose (INCI name: Polyquaternium-67) is preferred. The reason why component (C) containing both components (C1) and (C2) is able to further improve the hair shape fixing power is not clear, but is presumed to be as follows. Component (C2) forms a highly viscous gel and has excellent adhesion to hair, so it is easy to be uniformly adsorbed to the entire hair. On the other hand, component (C1) forms a low-viscosity gel with excellent water retention, so it is easy to cover the entire hair with a complex gel film, and the binding power can be further improved. Therefore, it is considered that the hair cosmetic composition of the present invention, in which component (C) contains both components (C1) and (C2), can form a film with good binding power more uniformly over the entire hair, and can further improve the shape fixing power for fixing the shape of the bundled hair.

[0048] In the hair cosmetic of the present invention, the mass ratio of component (C2) to component (C1) ((C2) / (C1)) is preferably 0.20 or more, more preferably 0.30 or more, still more preferably 0.40 or more, still more preferably 0.50 or more, still more preferably 0.70 or more, still more preferably 0.80 or more from the viewpoint of further improving the hair shape fixing power. From the same viewpoint, it is preferably 2.5 or less, more preferably 2.0 or less, still more preferably 1.5 or less, still more preferably 1.2 or less. Considering these viewpoints comprehensively, the mass ratio of component (C2) to component (C1) ((C2) / (C1)) is preferably 0.20 or more and 2.5 or less, more preferably 0.30 or more and 2.0 or less, still more preferably 0.40 or more and 1.5 or less, still more preferably 0.50 or more and 1.2 or less, still more preferably 0.70 or more and 1.2 or less, still more preferably 0.80 or more and 1.2 or less.

[0049] Component (C) may be used alone or in combination of two or more.

[0050] The content of component (C) in the hair cosmetic of the present invention is preferably 0.05% by mass or more, more preferably 0.10% by mass or more, still more preferably 0.30% by mass or more, still more preferably 0.40% by mass or more, still more preferably 0.50% by mass or more from the viewpoint of further improving the hair shape fixing power. From the same viewpoint, it is preferably 10.0% by mass or less, more preferably 5.0% by mass or less, still more preferably 3.0% by mass or less, still more preferably 2.0% by mass or less, still more preferably 1.5% by mass or less, still more preferably 1.2% by mass or less, still more preferably 0.90% by mass or less. Considering these viewpoints comprehensively, the content of component (C) in the hair cosmetic of the present invention is preferably 0.05% by mass or more and 10.0% by mass or less, more preferably 0.10% by mass or more and 5.0% by mass or less, still more preferably 0.30% by mass or more and 3.0% by mass or less, still more preferably 0.40% by mass or more and 2.0% by mass or less, still more preferably 0.50% by mass or more and 1.5% by mass or less, still more preferably 0.50% by mass or more and 1.2% by mass or less, still more preferably 0.50% by mass or more and 0.90% by mass or less.

[0051] In the hair cosmetic of the present invention, the mass ratio ((A) / (B)) of component (A) to component (B) is preferably 0.01 or more, more preferably 0.03 or more, still more preferably 0.04 or more, still more preferably 0.05 or more, still more preferably 0.06 or more, from the viewpoint of further improving the hair shape fixing power, and preferably 2.0 or less, more preferably 1.5 or less, still more preferably 1.2 or less, from the same viewpoint. Considering these viewpoints comprehensively, the mass ratio ((A) / (B)) of component (A) to component (B) is preferably 0.01 or more and 2.0 or less, more preferably 0.03 or more and 1.5 or less, still more preferably 0.04 or more and 1.2 or less, still more preferably 0.05 or more and 1.2 or less, still more preferably 0.06 or more and 1.2 or less.

[0052] In the hair cosmetic of the present invention, the mass ratio ((A) / (C)) of component (A) to component (C) is preferably 0.05 or more, more preferably 0.10 or more, still more preferably 0.20 or more, still more preferably 0.30 or more, still more preferably 0.40 or more, from the viewpoint of further improving the hair shape fixing power, and preferably 2.5 or less, more preferably 2.0 or less, still more preferably 1.5 or less, still more preferably 1.2 or less, still more preferably 1.0 or less, from the same viewpoint. Considering these viewpoints comprehensively, the mass ratio ((A) / (C)) of component (A) to component (C) is preferably 0.05 or more and 2.5 or less, more preferably 0.10 or more and 2.0 or less, still more preferably 0.20 or more and 1.5 or less, still more preferably 0.30 or more and 1.2 or less, still more preferably 0.40 or more and 1.0 or less.

[0053] From the perspective of further improving the hair shape fixing power, the total content of components (A) to (C) in the hair cosmetic of the present invention is preferably 0.5% by mass or more, more preferably 1.0% by mass or more, still more preferably 1.2% by mass or more, still more preferably 1.5% by mass or more, and is preferably 25% by mass or less, more preferably 20% by mass or less, still more preferably 15% by mass or less, still more preferably 12% by mass or less, still more preferably 10% by mass or less, still more preferably 8.0% by mass or less. Considering these perspectives comprehensively, the total content of components (A) to (C) in the hair cosmetic of the present invention is preferably 0.5% by mass or more and 25% by mass or less, more preferably 1.0% by mass or more and 20% by mass or less, still more preferably 1.2% by mass or more and 15% by mass or less, still more preferably 1.5% by mass or more and 12% by mass or less, still more preferably 1.5% by mass or more and 10% by mass or less, still more preferably 1.5% by mass or more and 8.0% by mass or less.

[0054] <Other components> In the hair cosmetic of the present invention, an aqueous medium can be contained from the viewpoints of handleability and facilitating the exertion of the action effects of components (A) to (C) according to its aspect, dosage form, etc. Examples of the aqueous medium include water, lower alcohols such as ethanol and isopropyl alcohol; lower molecular weight diols and triols having 6 or less carbon atoms such as 1,3-butylene glycol, glycerin, ethylene glycol, propylene glycol, and dipropylene glycol. Among these, they may be used alone or in combination of two or more. Among these, it is preferable to contain water as the aqueous medium. From the perspective of adjusting the hair cosmetic to an appropriate concentration and viscosity, the content of the aqueous medium in the hair cosmetic of the present invention is preferably 60% by mass or more, more preferably 65% by mass or more, still more preferably 70% by mass or more, and even more preferably 75% by mass or more. From the same perspective, it is preferably 99% by mass or less, more preferably 98% by mass or less, still more preferably 97% by mass or less, and even more preferably 96% by mass or less. Considering these perspectives comprehensively, the content of the aqueous medium in the hair cosmetic of the present invention is preferably 60% by mass or more and 99% by mass or less, more preferably 65% by mass or more and 98% by mass or less, still more preferably 70% by mass or more and 97% by mass or less, and even more preferably 75% by mass or more and 96% by mass or less.

[0055] In addition, the hair cosmetic of the present invention may appropriately contain other components as long as the object of the present invention is not impaired. Examples of such components include nonionic surfactants, amphoteric surfactants, and other components commonly blended in hair cosmetics, such as pH adjusters, aromatic alcohols, antioxidants, oils, polymers other than components (A) to (C), anti-dandruff agents, vitamin agents, bactericides, anti-inflammatory agents, preservatives, chelating agents, moisturizers, ceramides, colorants, polar solvent extracts of eucalyptus, proteins obtained from shells or pearls having nacre or their hydrolysates, honey, royal jelly, proteins obtained from silk or their hydrolysates, protein-containing extracts obtained from seeds of leguminous plants, carrot extracts, rice germ extracts, hibiscus extracts, aloe extracts, lotus extracts, pomegranate extracts, rose extracts, chamomile extracts, licorice extracts, shell ginger leaf extracts, chlorella extracts and other extracts, pearlescent agents, fragrances, pigments, ultraviolet absorbers, shea butter, rose water, orange oil, eucalyptus oil, organic acids, etc.

[0056] The pH of the hair cosmetic of the present invention is not particularly limited as long as it is within a range generally usable as a hair cosmetic. However, from the viewpoint of suppressing damage to the hair and scalp and facilitating the effects of the present invention, by adding an acid or a base, it is preferably adjusted to 3.0 or more, more preferably 4.0 or more, still more preferably 5.0 or more, and preferably 10.0 or less, more preferably 9.0 or less, still more preferably 8.0 or less. Considering these viewpoints comprehensively, the pH of the hair cosmetic of the present invention is preferably 3.0 or more and 10.0 or less, more preferably 4.0 or more and 9.0 or less, still more preferably 5.0 or more and 8.0 or less.

[0057] <Manufacturing method> The hair cosmetic of the present invention can be manufactured by a conventional method. For example, it can be manufactured by blending components (A) to (C) and, if necessary, other components and mixing them using a known stirring device or the like.

[0058] [Hair treatment method] The hair treatment method of the present invention includes a step of applying the above hair cosmetic of the present invention to the hair. Examples of the method of applying the hair cosmetic to the hair include methods such as applying, spraying or casting it on the hair, or immersing the hair in the hair cosmetic. The hair to which it is applied may be dry or wet, and preferably, after detangling the hair with a brush or a comb, it is washed and in a wet state. The application of the hair cosmetic may be done by hand, rubbing it in, or may be done using a brush or a comb or the like. Also, the hair to which the hair cosmetic is applied may be all of the hair or a part of it. The application amount of the hair cosmetic to the hair is the bath ratio (mass of the hair cosmetic / mass of the hair to which it is applied) with respect to the mass of the hair to which it is applied, preferably 0.01 or more, more preferably 0.03 or more, still more preferably 0.05 or more, still more preferably 0.08 or more, and preferably 20 or less, more preferably 15 or less, still more preferably 10 or less, still more preferably 5 or less, still more preferably 1 or less, still more preferably 0.5 or less. Considering these viewpoints comprehensively, the application amount of the hair cosmetic to the hair is the bath ratio (mass of the hair cosmetic / mass of the hair to which it is applied) with respect to the mass of the hair to which it is applied, preferably 0.01 or more and 20 or less, more preferably 0.03 or more and 15 or less, still more preferably 0.05 or more and 10 or less, still more preferably 0.08 or more and 5 or less, still more preferably 0.08 or more and 1 or less, still more preferably 0.08 or more and 0.5 or less.

[0059] After the above step, it is preferable to go through the step of rinsing the hair to which the hair cosmetic has been applied with water. In this case, in order to allow the hair cosmetic to fully penetrate into the hair, it is preferable to rinse with water after thoroughly working the hair cosmetic into the entire hair. The application time is preferably 15 seconds or more, more preferably 30 seconds or more, and preferably 5 minutes or less, more preferably 3 minutes or less. Considering these viewpoints comprehensively, the application time is preferably 15 seconds or more and 5 minutes or less, more preferably 30 seconds or more and 3 minutes or less. The step of rinsing with water only needs to be able to remove the excessive hair cosmetic on the hair surface, and the rinsing time with water is preferably 5 seconds or more and 3 minutes or less. The temperature of the water may be such that it does not impose a burden on the body, preferably 15°C or more and 50°C or less, more preferably 25°C or more and 45°C or less.

[0060] The hair after washing with water is dried by natural drying with a towel or the like, or forced drying using a dryer or the like. By using the hair cosmetic of the present invention to treat hair, particularly frizzy hair, in the manner described above, the hair can be bundled to give a certain shape, and the shape-fixing force for fixing the shape of the bundled hair can be improved. Therefore, particularly in styling frizzy hair, the time and effort required can be reduced, and it can be preferably applied.

[0061] Hereinafter, regarding the above-described embodiments, preferred embodiments of the hair cosmetic of the present invention will be further disclosed.

[0062] <1> A hair cosmetic containing the following components (A) to (C). (A) At least one anionic polymer selected from crosslinked polyacrylic acid and (acrylates / acrylic acid alkyl (C10-30)) cross polymer (B) An anionic surfactant (C) A cationic polymer having a cellulose backbone

[0063] <2> The hair cosmetic according to <1>, wherein the component (A) preferably contains crosslinked polyacrylic acid, and more preferably contains a polymer of acrylic acid crosslinked with pentaerythrityl allyl ether, sucrose allyl ether, or propylene allyl ether, i.e., carboxyvinyl polymer. <3>The component (B) preferably contains at least one selected from polyoxyethylene alkyl ether sulfates, alkylbenzene sulfonates, α-olefin sulfonates, internal olefin sulfonates, alkyl or alkenyl sulfates, alkyl sulfonates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, α-sulfo fatty acid salts, N-acyl amino acid salts, phosphoric acid mono- or diester salts, and sulfosuccinic acid ester salts; more preferably contains at least one selected from the group consisting of α-olefin sulfonates, internal olefin sulfonates, and polyoxyethylene alkyl ether sulfates; still more preferably contains polyoxyethylene alkyl ether sulfate; still more preferably contains polyoxyethylene alkyl ether sulfate represented by the following formula (I); still more preferably contains at least one selected from sodium lauryl sulfate and ammonium lauryl sulfate, the hair cosmetic according to <1> or <2>. R 1 -O-(CH2CH2O) p -SO3Y (I) In formula (I), R 1 represents a linear or branched alkyl group having 8 to 22 carbon atoms. p represents the average number of added moles and is a number from 0.25 to 20. Y represents an alkali metal, an alkaline earth metal, ammonium, an alkanolamine, or a basic amino acid. <4>The component (C) preferably contains a cationized cellulose derivative; more preferably contains at least one selected from cationized cellulose, cationized hydroxyethyl cellulose, cationized hydroxypropyl cellulose, and cationized carboxymethyl cellulose; still more preferably contains cationized hydroxyethyl cellulose, the hair cosmetic according to any one of <1> to <3>. <5> The component (C) preferably contains a hydrophobic cationized cellulose, more preferably contains at least one selected from hydrophobic cationized hydroxyethyl cellulose and hydrophobic cationized hydroxypropyl cellulose, still more preferably contains hydrophobic cationized hydroxyethyl cellulose, and still more preferably has a main chain derived from anhydroglucose represented by the formula (3), and the average number of moles of cationized ethyleneoxy groups per anhydroglucose unit is 0.01 to 3.0, and the average number of moles of ethyleneoxy groups is 0.5 to 4.0. The hair cosmetic according to any one of <1> to <4>, which contains hydrophobic cationized hydroxyethyl cellulose. <6> The component (C) preferably contains at least one selected from a polymer of a quaternary ammonium salt obtained by addition reaction of trimethylammonium-substituted epoxide and lauryldimethylammonium-substituted epoxide to hydroxyethyl cellulose (INCI name: Polyquaternium-67), a polymer of a quaternary ammonium salt obtained by adding glycidyltrimethylammonium chloride to hydroxyethyl cellulose (INCI name: Polyquaternium-10), a polymer of a quaternary ammonium salt obtained by addition polymerization of glycidyl lauryldimethylammonium chloride to hydroxyethyl cellulose (INCI name: Polyquaternium-24), and a polymer of a quaternary ammonium salt obtained by addition reaction of coconut oil alkyldimethylammonium-substituted epoxide to hydroxyethyl cellulose (INCI name: Polyquaternium-72), more preferably contains at least one selected from Polyquaternium-67 and Polyquaternium-10, and still more preferably contains Polyquaternium-67. The hair cosmetic according to any one of <1> to <5>. <7> The hair cosmetic according to any one of <1> to <6>, wherein the component (C) contains both of the following components (C1) and (C2). (C1) The hydrophobic cationized hydroxyethyl cellulose (C2) A cationic polymer having a cellulose skeleton other than (C1) <8>The component (C2) preferably contains a cationized hydroxyethyl cellulose other than the component (C1), more preferably a polymer of a quaternary ammonium salt (INCI name: Polyquaternium-10) obtained by adding glycidyltrimethylammonium chloride to hydroxyethyl cellulose, The hair cosmetic according to <7>. <9>The component (C1) contains a polymer of a quaternary ammonium salt (INCI name: Polyquaternium-67) obtained by an addition reaction of lauryldimethylammonium-substituted epoxide, The hair cosmetic according to <7> or <8>. <10>The mass ratio ((C2) / (C1)) of the component (C2) to the component (C1) is preferably 0.20 or more, more preferably 0.30 or more, still more preferably 0.40 or more, still more preferably 0.50 or more, still more preferably 0.70 or more, still more preferably 0.80 or more, and preferably 2.5 or less, more preferably 2.0 or less, still more preferably 1.5 or less, still more preferably 1.2 or less, The hair cosmetic according to any one of <7> to <9>. <11>The mass ratio ((A) / (B)) of the component (A) to the component (B) is preferably 0.01 or more, more preferably 0.03 or more, still more preferably 0.04 or more, still more preferably 0.05 or more, still more preferably 0.06 or more, and preferably 2.0 or less, more preferably 1.5 or less, still more preferably 1.2 or less, The hair cosmetic according to any one of <1> to <10>. <12>The mass ratio ((A) / (C)) of the component (A) to the component (C) is preferably 0.05 or more, more preferably 0.10 or more, still more preferably 0.20 or more, still more preferably 0.30 or more, still more preferably 0.40 or more, and preferably 2.5 or less, more preferably 2.0 or less, still more preferably 1.5 or less, still more preferably 1.2 or less, still more preferably 1.0 or less, The hair cosmetic according to any one of <1> to <11>. <13> The total content of the components (A) to (C) is preferably 0.5% by mass or more, more preferably 1.0% by mass or more, still more preferably 1.2% by mass or more, still more preferably 1.5% by mass or more, and preferably 25% by mass or less, more preferably 20% by mass or less, still more preferably 15% by mass or less, still more preferably 12% by mass or less, still more preferably 10% by mass or less, still more preferably 8.0% by mass or less, and is the hair cosmetic according to any one of <1> to <12>. <14> The content of the component (A) is preferably 0.01% by mass or more, more preferably 0.03% by mass or more, still more preferably 0.05% by mass or more, still more preferably 0.08% by mass or more, still more preferably 0.10% by mass or more, still more preferably 0.20% by mass or more, and preferably 5.0% by mass or less, more preferably 3.0% by mass or less, still more preferably 1.0% by mass or less, still more preferably 0.80% by mass or less, and is the hair cosmetic according to any one of <1> to <13>. <15> The content of the component (B) is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, still more preferably 0.3% by mass or more, still more preferably 0.4% by mass or more, still more preferably 0.5% by mass or more, and preferably 10% by mass or less, more preferably 8.0% by mass or less, still more preferably 7.0% by mass or less, and is the hair cosmetic according to any one of <1> to <14>. <16> The content of the component (C) is preferably 0.05% by mass or more, more preferably 0.10% by mass or more, still more preferably 0.30% by mass or more, still more preferably 0.40% by mass or more, still more preferably 0.50% by mass or more, and preferably 10.0% by mass or less, more preferably 5.0% by mass or less, still more preferably 3.0% by mass or less, still more preferably 2.0% by mass or less, still more preferably 1.5% by mass or less, still more preferably 1.2% by mass or less, still more preferably 0.90% by mass or less, and is the hair cosmetic according to any one of <1> to <15>. <17> The pH of the hair cosmetic is preferably 3.0 or higher, more preferably 4.0 or higher, still more preferably 5.0 or higher, and preferably 10.0 or lower, more preferably 9.0 or lower, still more preferably 8.0 or lower, and is the hair cosmetic according to any one of <1> to <16>. <18> The hair cosmetic according to any one of <1> to <17>, containing an aqueous medium. <19> The hair cosmetic according to <18>, wherein the aqueous medium preferably contains at least one selected from water, ethanol, isopropyl alcohol, 1,3-butylene glycol, glycerin, ethylene glycol, propylene glycol, and dipropylene glycol, and more preferably contains water. <20> The hair cosmetic according to <18> or <19>, wherein the content of the aqueous medium is preferably 60% by mass or higher, more preferably 65% by mass or higher, still more preferably 70% by mass or higher, still more preferably 75% by mass or higher, and preferably 99% by mass or lower, more preferably 98% by mass or lower, still more preferably 97% by mass or lower, still more preferably 96% by mass or lower. <21> The hair cosmetic according to any one of <1> to <20> is preferably a hair shampoo, hair rinse, hair conditioner, hair treatment, hair pack, or hair styling agent, and more preferably a hair rinse, hair conditioner, hair treatment, hair pack, or hair styling agent. <22> The hair cosmetic according to any one of <1> to <21> is preferably in a liquid, foamy, paste, or cream form, more preferably in a liquid, paste, or cream form, and still more preferably in a liquid form. <23> A hair treatment method having a step of applying the hair cosmetic according to any one of <1> to <22> to the hair and a step of rinsing the hair to which the hair cosmetic has been applied with water. <24> Use of the hair cosmetic according to any one of <1> to <22> for fixing the shape of the hair. <25> A method for fixing the shape of the hair by applying the hair cosmetic according to any one of <1> to <22>.

Example

[0064] [Examples 2~10、12~16 、 Reference Example 1, 11, Comparative Examples 1 to 3] Hair cosmetics having the compositions of the respective examples and comparative examples shown in Tables 1 to 3 below were prepared, and using hair bundles for evaluation, the shape fixing power of these hair cosmetics on hair was evaluated. The evaluation results are shown in Tables 1 to 3, respectively.

[0065] <Method for Blending Hair Cosmetics> Components (C1) and (C2) dissolved or uniformly dispersed in water, an appropriate amount of water, and component (B) were each placed in a beaker, and these components were uniformly mixed at 80°C. To the resulting mixture, component (A) uniformly dispersed in water was added, cooled to room temperature, and uniformly mixed. The pH was adjusted to 6 using a pH adjuster (sodium hydroxide) to obtain hair cosmetics, respectively.

[0066] <Evaluation of Shape Fixing Power of Hair> Curly hair bundles with a mass of 2 g and a length of 35 cm were washed with a plain shampoo having the composition shown below and thoroughly rinsed with warm water (35 - 40°C). Then, 0.2 g of the hair cosmetics having the compositions of the respective examples , each reference example, and comparative examples was applied to this hair bundle and allowed to soak in for 1 minute. Then, the hair bundle to which the hair cosmetics were applied was rinsed with warm water (35 - 40°C) for 30 seconds. Thereafter, the hair bundle was straightened with a ring comb and towel-dried, and then completely dried with a dryer equipped with a diffuser to obtain hair bundles for evaluation, respectively. The length of the obtained hair bundles for evaluation and the bundle width at a point 20 cm from the root of the hair bundle were measured, respectively, to evaluate the shape fixing power of the hair. The fixing power in the width direction of the hair bundle was evaluated by the bundle width (cm). The fixing power in the length direction of the hair bundle was evaluated by Δ length (cm) = (the length of the hair bundle when stretched before treatment) - (the length of the hair bundle after treatment). The smaller the bundle width and Δ length, the better the shape fixing power of the hair bundle. Here, the "length of the hair bundle when stretched before treatment" is the length when the curly hair bundle before treatment is gently stretched by hand to make the curled hair bundle straight.

[0067] (Composition of Plain Shampoo) [Unit: mass%] Sodium polyoxyethylene (2.5) lauryl ether sulfate 15.5 Diethanolamine laurate 2.3 Disodium edetate 0.15 Sodium benzoate 0.5 Sodium chloride 0.8 Phosphoric acid appropriate amount (pH adjustment) Fragrance trace amount (less than 0.5) Methylparaben trace amount (less than 0.5) water balance (pH 7.0) Total 100

[0068]

Table 1

[0069] The annotations *1 to 6 in Table 1 are shown below. Note that the mass% in Table 1 is the amount of active ingredient. *1 Manufactured by Lubrizol Corporation, Carbopol 980 *2 Manufactured by Lubrizol Corporation, Carbopol ETD 2020 *3 Manufactured by Kao Corporation, Sofcare SA-37W *4 Manufactured by Kao Corporation, Emal 170S-A (active ingredient amount 70 mass%) *5 Manufactured by Dow Chemical Company, Softcat SL-100 *6 Manufactured by Kao Corporation, Poi's C-150L

[0070]

Table 2

[0071] The annotations *1 to 4 in Table 2 are shown below. Note that the mass% in Table 2 is the amount of active ingredient. *1 Manufactured by Lubrizol Corporation, Carbopol 980 *2 Manufactured by Kao Corporation, Emal 170S-A (active ingredient content: 70% by mass) *3 Manufactured by The Dow Chemical Company, Softcat SL-100 *4 Manufactured by Kao Corporation, Poi's C-150L

[0072]

Table 3

[0073] The annotations of *1 to *8 in Table 3 are shown below. Note that the mass % in Table 3 is the active ingredient content. *1 Manufactured by Lubrizol Corporation, Carbopol 980 *2 Manufactured by Kao Corporation, Emal 170S-A (active ingredient content: 70% by mass) *3 Manufactured by STEPAN COMPANY, Bio-Terge AS-40 (active ingredient content: 40% by mass) *4 Production Example 2 *5 Production Example 1 *6 Manufactured by Ajinomoto Health Supply Co., Ltd., Amylite ACS-12 (active ingredient content: 30% by mass) *7 Manufactured by The Dow Chemical Company, Softcat SL-100 *8 Manufactured by Kao Corporation, Poi's C-150L

[0074] [Measurement methods for various physical properties] (i) Measurement method for the double bond position of the raw material olefin The double bond position of the raw material olefin was measured by gas chromatography (hereinafter abbreviated as GC). Specifically, after reacting dimethyldisulfide with the raw material olefin to form a dithiolated derivative, each component was separated by GC. As a result, the double bond position of the raw material olefin was determined from the respective peak areas. The apparatus and analysis conditions used for the measurement are as follows. GC apparatus (product name: HP6890, manufactured by HEWLETT PACKARD), column (product name: Ultra-Alloy-1HT capillary column 30m × 250μm × 0.15μm, manufactured by Frontier Lab Co., Ltd.), detector (hydrogen flame ionization detector (FID)), injection temperature 300°C, detector temperature 350°C, He flow rate 4.6 mL / min

[0075] (ii) Method for measuring the content according to the sulfonic acid group bonding position of sodium internal olefin sulfonate Regarding sodium internal olefin sulfonate to which a sulfonic acid group is bonded, the content of each sodium internal olefin sulfonate according to the sulfonic acid group bonding position was measured by high performance liquid chromatography / mass spectrometer (HPLC-MS). Specifically, the hydroxy form to which a sulfonic acid group is bonded was separated by high performance liquid chromatography (HPLC), and each was identified by applying it to a mass spectrometer (MS). As a result, the content of each was determined from the HPLC-MS peak area. The apparatus and conditions used for the measurement were as follows. HPLC apparatus "LD20ASXR" (manufactured by Shimadzu Corporation), column "ODS Hypersil (registered trademark)" (4.6 × 250 mm, particle size: 3μm, manufactured by Thermo Fisher Scientific), sample preparation (diluted 1000-fold with methanol), eluent A (water added with 10 mM ammonium acetate), eluent B (methacrylonitrile / water = 95 / 5 (v / v) solution added with 10 mM ammonium acetate), gradient (0 min (A / B = 60 / 40) → 15.1 - 20 min (30 / 70) → 20.1 - 30 min (60 / 40)), MS apparatus "LCMS-2020" (manufactured by Shimadzu Corporation), ESI detection (anion detection m / z: 321.10 (component (A) with 16 or 18 carbon atoms)), column temperature (40°C), flow rate (0.5 mL / min), injection volume (5 μL)

[0076] (iii) Method for measuring the mass ratio of hydroxy form / olefin form The mass ratio of the hydroxy form to the olefin form of sodium internal olefin sulfonate was measured by HPLC-MS. Specifically, the hydroxy form and the olefin form were separated by HPLC and then identified by subjecting each to MS. As a result, the respective ratios were determined from the HPLC-MS peak areas. The apparatus and conditions used for the measurement were as follows. HPLC apparatus (trade name: Agilent Technologies 1100, manufactured by Agilent Technologies), column (trade name: L-column ODS 4.6×150 mm, manufactured by the Chemical Substances Evaluation and Research Institute, Inc.), sample preparation (diluted 1000-fold with methanol), eluent A (water added with 10 mM ammonium acetate), eluent B (methanol added with 10 mM ammonium acetate), gradient (0 min (A / B = 30 / 70%) → 10 min (30 / 70%) → 55 min (0 / 100%) → 65 min (0 / 100%) → 66 min (30 / 70%) → 75 min (30 / 70%)), MS apparatus (trade name: Agilent Technologies 1100MS SL (G1946D)), MS detection (anion detection m / z60 - 1600, UV240 nm)

[0077] (iv) Method for measuring the content of raw material olefin The content of unreacted raw material olefin in sodium internal olefin sulfonate was measured by GC. Specifically, ethanol and petroleum ether were added to an aqueous solution of sodium internal olefin sulfonate, followed by extraction to obtain olefin in the petroleum ether phase. As a result, the raw material olefin was quantified from the GC peak area. The apparatus and analysis conditions used for the measurement were as follows. GC apparatus (trade name: Agilent Technologies 6850, manufactured by Agilent Technologies), column (trade name: Ultra-Alloy-1HT capillary column 15 m×250 μm×0.15 μm, manufactured by Frontier Lab Co., Ltd.), detector (hydrogen flame ionization detector (FID)), injection temperature 300°C, detector temperature 350°C, He flow rate 3.8 mL / min

[0078] (v) Method for measuring the content of inorganic compounds The content of the inorganic compound was measured by potentiometric titration or neutralization titration. Specifically, the content of Na2SO4 was quantified by determining the content of sulfate ion (SO4 2- ) by potentiometric titration. Also, the content of NaOH was quantified by neutralization titration with dilute hydrochloric acid.

[0079] (Production Example 1) [Production of Sodium Internal Olefin Sulfonate (DBP: 4.2)] 7000 g (28.9 mol) of 1-hexadecanol (product name: Calcohol 6098, manufactured by Kao Corporation) and 350 g (5% by mass based on the raw material alcohol) of γ-alumina (manufactured by STREM Chemicals, Inc.) as a solid acid catalyst were charged into a flask equipped with a stirrer. While stirring, nitrogen (7000 mL / min) was passed through the system at 280 °C for 8 hours for the reaction. The alcohol conversion rate after the reaction was 100%. The obtained crude alkene internal olefin was transferred to a distillation flask and distilled at 136 - 160 °C / 4.0 mmHg to obtain a raw material olefin a1 with a carbon number of 16 and an olefin purity of 100%. The double bond distribution of the obtained raw material olefin a1 was 1.8% by mass at the C1 position, 21.8% by mass at the C2 position, 18.7% by mass at the C3 position, 18.6% by mass at the C4 position, 14.3% by mass at the C5 position, 11.4% by mass at the C6 position, and the total of the C7 and 8 positions was 13.6% by mass, and the average double bond position was 4.17. The obtained raw material olefin was put into a thin-film sulfonation reactor having a jacket on the outside, and a sulfonation reaction was carried out using sulfur trioxide gas under the condition of passing cooling water at 10 °C through the jacket outside the reactor. The molar ratio of SO3 / internal olefin during the sulfonation reaction was set to 1.01. The obtained sulfonated product was mixed with an aqueous alkali solution prepared with 1.04 molar times the amount of sodium hydroxide (alkali agent) relative to the theoretical acid value, and neutralized at 30 °C for 1 hour by a continuous method. The obtained neutralized product was heated in an autoclave at 170 °C for 1 hour for hydrolysis to obtain sodium internal olefin sulfonate 1 with a carbon number of 16. The content of the raw material olefin contained in the obtained sodium internal olefin sulfonate 1 with a carbon number of 16 was 0.4% by mass, and the inorganic compound was 0.39% by mass.

[0080] (Production Example 2) [Production of Sodium Internal Olefin Sulfonate (DBP: 3.6)] Except that the reaction time was changed to 6 hours, in the same manner as in Production Example 1, a raw material olefin 2 having 16 carbon atoms with an olefin purity of 100% was obtained. The double bond distribution of the obtained raw material olefin 2 was 2.4% by mass at the C1 position, 31.8% by mass at the C2 position, 23.7% by mass at the C3 position, 16.9% by mass at the C4 position, 10.3% by mass at the C5 position, 7.1% by mass at the C6 position, and the total of the C7 and C8 positions was 7.9% by mass, and the average double bond position was 3.58. Except that the obtained raw material olefin 2 was used, in the same manner as in Production Example 1, sodium internal olefin sulfonate 2 having 16 carbon atoms was obtained. The content of the raw material olefin contained in the obtained sodium internal olefin sulfonate A4 having 16 carbon atoms was 0.4% by mass, and the inorganic compound was 0.42% by mass.

[0081] From Tables 1 to 3, in the evaluation of the shape fixing power of the hair cosmetic of this example, the bundle width and Δ length were small, and the shape fixing power of the hair bundle was improved. That is, according to the hair cosmetic of the present invention, it is possible to improve the shape fixing power for fixing the shape of the bundled hair while bundling the hair to give a certain shape. In particular, it can be understood that curly hair and other frizzy hair can be bundled and fixed in a straight shape.

Claims

1. The following components (A) to (C): (A) At least one anionic polymer selected from crosslinked polyacrylic acid and (acrylates / alkyl acrylates (C10-30)) cross polymer (B) An anionic surfactant (C) A cationic polymer having a cellulose backbone A hair cosmetic containing the same, The mass ratio ((A) / (B)) of the component (A) to the component (B) is 0.04 or more and 1.2 or less, A hair cosmetic in which the mass ratio ((A) / (C)) of the component (A) to the component (C) is 0.10 or more and 1.2 or less.

2. The hair cosmetic according to claim 1, wherein the component (C) contains both the following components (C1) and (C2). (C1) Hydrophobic cationized hydroxyethyl cellulose (C2) A cationic polymer having a cellulose backbone other than the above (C1)

3. The hair cosmetic according to claim 2, wherein the mass ratio ((C2) / (C1)) of the component (C2) to the component (C1) is 0.20 or more and 2.5 or less.

4. The hair cosmetic according to any one of claims 1 to 3, wherein the content of the component (A) is 0.01% by mass or more and 5.0% by mass or less.

5. The hair cosmetic according to any one of claims 1 to 4, wherein the content of the component (B) is 0.1% by mass or more and 10% by mass or less.

6. The hair cosmetic according to any one of claims 1 to 5, wherein the content of the component (C) is 0.05% by mass or more and 10.0% by mass or less.

7. A hair treatment method comprising a step of applying the hair cosmetic according to any one of claims 1 to 6 to hair, and a step of rinsing the hair to which the hair cosmetic has been applied with water.

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