JP2022171305A - Hair cosmetic - Google Patents

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

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

In recent years, hair cosmetics are increasingly expected to have a conditioning effect that can impart smoothness, softness, manageability, and the like to the hair. Techniques for imparting smoothness, softness, manageability, etc. to hair by blending cationic polymers and anionic polymers have already been reported.

For example, Patent Document 1 describes a hair treatment agent containing (A) a cationic polysaccharide, (B) a specific crosslinked cationic polymer, (C) a fatty acid or a salt thereof, and (D) a cationic surfactant. However, in addition to making it difficult for the hair to become prone to sleepiness, it is possible to suppress stickiness during rinsing, impart smoothness to the hair, and maintain the unity and smoothness of the hair until the next shampooing. Have been described.

Patent Document 2 discloses that a hair cleansing composition containing (A) an anionic surfactant, (B) a crosslinked cationic polymer, a hydrophobic cationized hydroxyethyl cellulose, and water prevents hair from falling apart during rinsing. It is described that it is easy to use, does not get tangled, does not feel squeaky, has excellent richness, and can dry wet hair after shampooing in a short time.

Patent Document 3 discloses a hair cleanser composition containing component (A): anionic surfactant, component (B): cationic polymer, component (C): polymer containing specific structural units, and water. wherein the mass ratio ((B)/(C)) of the content of component (B) to the content of component (C) in the hair cleansing composition is within a specific range. The product is described as giving the hair a smoothness and softness that is desirable in terms of manageability and feel, while making it difficult for the hair to develop a habit in bed.

JP 2017-210413 A JP 2017-88516 A JP 2017-137254 A

Hair cosmetics in recent years are endowed with new functions such as suppressing hair curls and imparting manageability to the hair, but a technique for controlling the hair shape itself has not been established. Therefore, it has the function of fixing the shape while bundling the hair to give it a certain shape. There is a demand for functions that The hair cosmetics disclosed in Patent Documents 1 to 3 have room for improvement in terms of the ability to fix the shape of hair.
TECHNICAL FIELD The present invention relates to a hair cosmetic and a hair treatment method with improved hair shape-fixing power.

The present inventors have found that (A) at least one anionic polymer selected from crosslinked polyacrylic acid and (acrylates/alkyl acrylate (C10-30)) crosspolymers, (B) an anionic surfactant, and (C) A hair cosmetic containing a cationic polymer having a cellulose skeleton can improve the ability to fix the shape of hair, and completed the present invention.

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 crosslinked polyacrylic acid and (acrylates/alkyl acrylate (C10-30)) crosspolymer (B) anionic surfactant (C) cationic having a cellulose skeleton Polymer [2] A method for treating hair, comprising the steps of: applying the hair cosmetic composition according to [1] above to hair; and rinsing the hair to which the hair cosmetic composition has been applied.

ADVANTAGE OF THE INVENTION According to this invention, the hair cosmetics and hair treatment method with which the shape fixation power of hair improved can be provided.

FIG. 10 is a diagram for explaining the shape fixation of hair, and shows a photograph of a state in which the upper end of a hair bundle is fixed and hung, as seen from the front, and (a) shows an untreated hair bundle for evaluation. (b) shows a state in which the untreated hair tress for evaluation in (a) was treated with the hair cosmetic of the present invention, straightened with a ring comb, and completely dried with a dryer.

[Hair cosmetics]
The hair cosmetic composition of the present invention contains the following components (A) to (C).
(A) at least one anionic polymer selected from crosslinked polyacrylic acid and (acrylates/alkyl acrylate (C10-30)) crosspolymer (B) anionic surfactant (C) cationic having a cellulose skeleton Polymer In the present invention, "containing the component X" is regarded as having the same meaning as "containing the component X".

According to the hair cosmetic composition of the present invention, it is possible to improve the shape-fixing force for fixing the shape of the bundled hair while bundling the hair to impart a certain shape. For this reason, it is possible to reduce the time and effort required when styling curly hair or other peculiar hair into a straight shape or a curly wavy shape, and to maintain the created shape for a long time. , can be suitably applied.
FIG. 1 is a diagram for explaining the fixation of the shape of hair, and shows a photograph of a state in which the upper end of the hair bundle is fixed and hung, and (a) is an untreated evaluation. (b) shows a state in which the untreated hair bundle for evaluation in (a) was treated with the hair cosmetic of the present invention, straightened with a ring comb, and completely dried with a dryer. ing.
That is, in the present invention, the "shape fixing power of hair" means, for example, that curly hair as shown in FIG. It is a force that strongly fixes the shape so that the shape is maintained even after drying. In the present invention, "fixing the shape of hair" means a state in which hairs are bound together and a bundle of hair is fixed in a fixed shape, and the hair line is beautifully disordered from the top to the tip. This is a different state from the "hair clump," which means a state in which the hair is not straightened.

The reason why the effect of the present invention is exhibited by the hair cosmetic composition of the present invention having the above constitution is presumed as follows.
The hair cosmetic composition of the present invention comprises at least one anionic polymer selected from crosslinked polyacrylic acid and (acrylates/alkyl acrylate (C10-30)) crosspolymer as component (A), and an anion as component (B). It contains a cationic polymer having a cellulose skeleton as a surfactant and component (C).
Component (A), which is an anionic polymer, component (B), which is an anionic surfactant, and component (C), which is a cationic polymer, can interact to form a composite gel.
Then, when the hair to which the hair cosmetic composition of the present invention is applied is rinsed, the excess anionic surfactant component (B) is washed away, and the composite gel is deposited on the hair surface and bound to the hair surface. It is thought that a composite gel film having properties is formed.
It is believed that the hair on which a composite gel film having binding properties is formed is fixed in shape by binding the hairs to each other and supporting each other by the composite gel film.
Here, since the component (C) has excellent adhesion to the hair, it tends to be uniformly adsorbed on the entire hair. Furthermore, since the components (A) and (C) are excellent in water retention, the binding force of the composite gel film can be improved.
Therefore, in the hair cosmetic composition of the present invention, by combining the components (A) to (C), it is possible to uniformly form a film with good binding strength over the entire hair, and thus the hair can be bundled and given a certain shape. At the same time, it is thought that the shape-fixing force for fixing the shape of the bundled hair can be improved.

Examples of the hair cosmetics of the present invention include hair cleansers such as hair shampoos, hair rinses, hair conditioners, hair treatments, hair packs, and hair styling agents. Among these, from the viewpoint of further exhibiting the effect of the present invention, the one that is used after washing the hair is preferable, and the one that is used after being applied to the hair and then rinsed is more preferable. From this point of view, the hair cosmetic of the present invention is preferably a hair rinse, hair conditioner, hair treatment, hair pack or hair styling agent.
The dosage form of the hair cosmetic composition of the present invention can be, for example, any dosage form such as liquid, foam, paste or cream. Among these, liquid, paste or cream is preferable, and liquid is more preferable, from the viewpoint of ease of use.

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

As crosslinked polyacrylic acid, carboxyvinyl polymers, ie carbomers by the INCI name, are preferred. Carbomer is a polymer of acrylic acid crosslinked with pentaerythyl allyl ether, sucrose allyl ether or propylene allyl ether.
Component (A) forms a composite gel through interaction with component (C), which is a cationic polymer having cationic properties. The ability to fix the shape of hair can be improved due to the effect of improving water retention of hair and the effect of binding hair together by the composite gel.
(Acrylates/alkyl acrylate (C10-30)) crosspolymer is a copolymer of one or more monomers consisting of acrylic acid, methacrylic acid or their simple esters and an alkyl acrylate (C10-30) It is crosslinked with an ether or an allyl ether of pentaerythritol and has the INCI name Acrylates/C10-30 Alkyl Acrylate Cross Polymer.

The anionic polymer of component (A) is preferably a polymer of acrylic acid. The content of structural units 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, and 0.5% by mass or less. is more preferably 0.1% by mass or less, and the anionic polymer of component (A) further preferably does not contain alkyl methacrylate as a constituent monomer. Therefore, it is possible to further improve the ability to fix the shape of hair in an aqueous medium by interacting with the component (C) compared to a polymer containing alkyl methacrylate, which is less hydrophilic than acrylic acid, as a monomer structural unit. can be done.
Further, the polymer of component (A) is preferably of a crosslinked type. When the component (A) is a crosslinked polymer, the effect of improving the water retention of the hair is high, and the ability to fix the shape of the hair can be further improved.

Commercially available carbomers include, for example, Carbopol (registered trademark; hereinafter abbreviated) 980 and Carbopol 981 (manufactured by Lubrizol Co., Ltd.). Examples of commercial products of the (acrylates/alkyl acrylate (C10-30)) crosspolymer include Carbopol ETD2020 (manufactured by Lubrizol Co., Ltd.).

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

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, and further preferably 0.03% by mass or more, from the viewpoint of further improving the shape-fixing power of hair. It is preferably 0.05% by mass or more, more preferably 0.08% by mass or more, still more preferably 0.10% by mass or more, and still more preferably 0.20% by mass or more. It is 0% by mass or less, more preferably 3.0% by mass or less, still more preferably 1.0% by mass or less, and even more preferably 0.80% by mass or less. Taking these points together, the content of component (A) in the hair cosmetic composition 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, more preferably 0.05% by mass or more and 1.0% by mass or less, 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, more preferably 0.20 mass % or more and 0.80 mass % or less.

<Component (B): anionic surfactant>
The hair cosmetic composition of the present invention contains an anionic surfactant as component (B).
Anionic surfactants include polyoxyethylene alkyl ether sulfates, alkylbenzenesulfonates, α-olefinsulfonates, internal olefinsulfonates, alkyl or alkenyl sulfates, alkylsulfonates, 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, sulfosuccinic acid ester salts and the like, and one or more of these may be used. can.

Component (B) is selected from α-olefin sulfonates, internal olefin sulfonates, and polyoxyethylene alkyl ether sulfates from the viewpoints of detergency, good foamability, foam feel, formulation stability, and availability. It preferably contains at least one selected from the group consisting of, and more preferably contains polyoxyethylene alkyl ether sulfate.
Polyoxyethylene alkyl ether sulfates include compounds represented by the following formula (I).
R ¹ —O—(CH ₂ CH ₂ O) _p —SO ₃ Y (I)
In formula (I), R ¹ represents a linear or branched alkyl group having 8 to 22 carbon atoms. p indicates 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.

The number of carbon atoms in the linear or branched alkyl group in R ¹ is preferably 8 or more and 18 or less, more preferably 8 or less and 18 or less, from the viewpoints of detergency, good foaming, foam feel, blending stability, and availability. It is 10 or more and 18 or less.
Specific examples of R ¹ in formula (I) include 2-ethylhexyl group, n-octyl group, nonyl group, n-decyl group, isodecyl group, undecyl group, n-dodecyl group, lauryl group, tridecyl group and myristyl group. , pentadecyl, palmityl, heptadecyl, stearyl, isostearyl, nonadecyl, icosyl, henicosyl, and docosyl. Among these, R ¹ is preferably a linear alkyl group, more preferably one selected from the group consisting of n-octyl group, n-decyl group, lauryl group, myristyl group, cetyl group, and stearyl group. More preferably, one or more selected from the group consisting of n-decyl group, lauryl group, myristyl group, cetyl group and stearyl group, more preferably lauryl group.
Furthermore, R ¹ may be an alkyl group derived from multiple 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 formula (I) is obtained as a mixture of a plurality of compounds having different alkyl groups.

p in the formula (I) 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, good foamability, foam feel, 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. be.
Y in formula (I) represents an alkali metal, alkaline earth metal, ammonium, alkanolamine or basic amino acid, preferably alkali metal or ammonium.
Preferred alkali metals are lithium, sodium, or potassium. Ammonium may be alkylammonium or alkanolammonium.
Y is preferably one or more selected from the group consisting of sodium, potassium, and ammonium, more preferably sodium and ammonium, from the viewpoints of detergency, good foamability, foam feel, formulation stability, and availability. It is one or more selected from the group consisting of

Specific examples of the polyoxyethylene alkyl ether sulfate represented by the formula (I) have an average addition mole number p of oxyethylene groups of 0.25 to 20, preferably 0.5 to 15, more preferably 0. .5 to 10, more preferably 1 to 5, sodium laureth sulfate, ammonium laureth sulfate, and the like.
Specific examples of sodium laureth sulfate include "Emal 227HP" and "Emal 125HP" manufactured by Kao Corporation, and specific examples of ammonium laureth sulfate include "Emal 170S-A" manufactured by Kao Corporation.

The number of carbon atoms in the α-olefin sulfonate is preferably 8 or more and 22 or less, more preferably 8 or more and 18 carbon atoms, from the viewpoints of detergency, foamability, foam feel, blending stability, and availability. Below, it is more preferably 10 or more and 18 or less carbon atoms.
Examples of the counter ion of the α-olefinsulfonic acid constituting the α-olefinsulfonate include alkali metal ions such as sodium ion and potassium ion; alkaline earth metal ions such as calcium ion and magnesium ion; ammonium ion; or alkanolammonium having 1 to 3 alkanol groups of 3 (eg, monoethanolammonium, diethanolammonium, triethanolammonium, triisopropanolammonium, etc.).
The counter ion of the α-olefin sulfonic acid is preferably one or more selected from the group consisting of sodium, potassium, and ammonium, from the viewpoints of detergency, good foamability, feel of foam, formulation stability, and availability. Sodium is more preferred.
Specific examples of α-olefin sulfonates include sodium sulfonates of α-olefins having preferably 8 or more and 22 or less carbon atoms, more preferably 10 or more and 18 or less carbon atoms.

The internal olefin sulfonate can be obtained, for example, by sulfonating, neutralizing, and hydrolyzing an internal olefin having a double bond inside the olefin chain (2 or more positions).
The number of carbon atoms in the internal olefin sulfonate is preferably 8 or more and 22 or less, more preferably 8 or more and 18 or less, from the viewpoints of detergency, foamability, feel of foam, formulation stability, and availability. and more preferably 10 or more and 18 or less carbon atoms.
The internal olefin of the internal olefin sulfonate is an olefin having a double bond inside the olefin chain, and the position of the double bond is present at the 1st position of the carbon chain, so-called α-olefin When it contains a trace amount It has a broader meaning including
Sulfonation of internal olefins produces β-sultones quantitatively, part of which converts to γ-sultones and olefinsulfonic acids, which are further converted into hydroxyalkanes by the steps of neutralization and hydrolysis. Sulfonate and converted to internal olefin sulfonate. Here, the hydroxy group of the resulting hydroxyalkanesulfonate is inside the alkane chain and the double bond of the internal olefinsulfonate is inside the olefin chain.
Counter ions of the internal olefinsulfonic acid constituting the internal olefinsulfonate include alkali metal ions such as sodium ion and potassium ion; alkaline earth metal ions such as calcium ion and magnesium ion; ammonium ion; (eg, monoethanolammonium, diethanolammonium, triethanolammonium, triisopropanolammonium, etc.) having 1 to 3 alkanol groups.
The counter ion of the internal olefin sulfonic acid is preferably one or more selected from the group consisting of sodium, potassium, and ammonium, from the viewpoints of detergency, good foamability, foam feel, formulation stability, and availability. Sodium is preferred.

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-acylamino acid salts, phosphoric acid mono- or diester salts, sulfosuccinic acid ester salts, etc., one or more of these can be used.
Hydrocarbon groups such as alkyl groups and alkenyl groups possessed by the above anionic surfactants other than α-olefin sulfonates, internal olefin sulfonates and polyoxyethylene alkyl ether sulfates, or constituent fatty acids preferably have a carbon number of 8 or more and 22 or less, more preferably 8 or more and 18 or less carbon atoms, and still more preferably 10 or more and 18 or less carbon atoms.

Counter ions for 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; calcium; alkaline earth metal ions such as ions and magnesium ions; ammonium ions; mentioned.

Among the above, anionic surfactants other than polyoxyethylene alkyl ether sulfates include alkyl sulfates and α-olefins from the viewpoints of detergency, good foaming, foam feel, formulation stability, and availability. One or more selected from the group consisting of sulfonates, internal olefin sulfonates, N-acylamino acid salts and alkyl ether carboxylates are preferred.
Examples of the alkyl sulfate include sodium lauryl sulfate and the like. Alkyl ether carboxylates include polyoxyethylene alkyl ether acetates such as sodium laureth acetate. Examples of N-acylamino acid salts include cocoyl alanine salts and the like.

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

The content of component (B) in the hair cosmetic composition of the present invention is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, and further preferably 0.2% by mass or more, from the viewpoint of further improving the shape-fixing power of hair. It is preferably 0.3% by mass or more, more preferably 0.4% by mass or more, still more preferably 0.5% by mass or more, and from the same viewpoint, preferably 10% by mass or less, more preferably 8.0% by mass. % or less, more preferably 7.0 mass % or less. Taking these points together, 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, more preferably 0.3 mass % or more and 7.0 mass % or less, more preferably 0.4 mass % or more and 7.0 mass % or less, still more preferably 0.5 mass % or more and 7.0 mass % or less is.

<Component (C): Cationic polymer having a cellulose skeleton>
The hair cosmetic composition of the present invention contains a cationic polymer having a cellulose skeleton as component (C).
In the present invention, "a cationic polymer having a cellulose skeleton" means a polymer having a cationic group and a cellulose skeleton and having a cationic charge as a whole. In addition, the cationic group refers to a cationic group, or a group that can be ionized to become a cationic group, for example, a quaternary ammonium group, or a 3 means a tertiary amino group.

Cationic polymers having a cellulose backbone include cationized cellulose derivatives, specifically 1 selected from the group consisting of cationized cellulose, cationized hydroxyethyl cellulose, cationized hydroxypropyl cellulose, and cationized carboxymethyl cellulose species or more. Among these, cationized hydroxyethyl cellulose is preferable from the viewpoint of forming a composite gel film.

In addition, the cationic polymer having a cellulose skeleton preferably contains hydrophobic cationized cellulose from the viewpoint of further improving the shape-fixing power of hair.
Hydrophobic cationized cellulose of component (C) includes hydrophobic cationized hydroxyethyl cellulose and hydrophobic cationized hydroxypropyl cellulose, and hydrophobic cationized hydroxyethyl cellulose is preferred.

The hydrophobic cationized hydroxyethyl cellulose preferably has an anhydroglucose-derived main chain represented by the following formula (3) from the viewpoint of further improving the shape-fixing power of hair, and the anhydroglucose The average number of moles of cationized ethyleneoxy groups per glucose unit is from 0.01 to 3.0, and the average number of moles of ethyleneoxy groups is from 0.5 to 4.0.

式（３）中、Ｒ^７、Ｒ^８及びＲ^９は、それぞれ独立に下記式（４）で表されるカチオン化エチレンオキシ基とエチレンオキシ基を有する置換基を示し、ｎはアンヒドログルコースの平均重合度であって５０～５０００の数を示す。

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), n is anhydroglucose It is an average degree of polymerization and indicates a number from 50 to 5,000.

R ⁷ , R ⁸ and R ⁹ in formula (3) are groups represented by formula (4) and may be the same or different. In addition, n R ⁷ s, n R ⁸ s, and n R ^9s may be the same or different.

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

式（５）中、Ｒ^１０～Ｒ^１２はそれぞれ独立に炭素数１～１８の直鎖又は分岐鎖のアルキル基を示し、Ｘ^－はアニオン性基を示す。ただし、分子内に存在するＲ^１２のうち少なくとも１つは炭素数８～１８の直鎖又は分岐鎖のアルキル基である。

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

In formula (5), R ¹⁰ to R ¹² are methyl group, ethyl group, n-propyl group, n-butyl group, n-octyl group, n-decyl group, n-dodecyl group, n-tetradecyl group, Examples include n-hexadecyl group and n-octadecyl group. R ¹⁰ and R ¹¹ are preferably methyl group, ethyl group, n-propyl group, n-butyl group, n-octyl group, n-decyl group and n-dodecyl group, more preferably methyl group. R ¹² is preferably a methyl group, an n-octyl group, an n-decyl group or an n-dodecyl group, more preferably a methyl group or an n-dodecyl group.

In formula (5), X 1 ^- is an anionic group which is a counterion of ammonium, and specific examples thereof include alkyl sulfate ions, sulfate ions, phosphate ions, alkyl carbonate ions, and halide ions. Among these, halide ions are preferred from the viewpoint of ease of production. Examples of halide ions include fluoride ions, chloride ions, bromide ions and iodide ions. From the viewpoint of the water solubility and chemical stability of component (C), chloride ions and bromide ions are preferred. Chloride ions are more preferred.

Commercially available polymers can also be used as component (C). Examples of the cationic polymer having a cellulose skeleton include a quaternary ammonium salt polymer (INCI name: Polyquaternium-67) obtained by addition reaction of trimethylammonium-substituted epoxide and lauryldimethylammonium-substituted epoxide to hydroxyethyl cellulose, and hydroxyethyl cellulose. A quaternary ammonium salt polymer obtained by adding glycidyltrimethylammonium chloride (INCI name: Polyquaternium-10), a quaternary ammonium salt polymer obtained by addition polymerization of glycidyllauryldimethylammonium chloride to hydroxyethyl cellulose (INCI Name: Polyquaternium-24), polymer of quaternary ammonium salt obtained by addition reaction of coconut oil alkyldimethylammonium-substituted epoxide to hydroxyethyl cellulose (INCI name: Polyquaternium-72), "Caticello L-150" manufactured by Kao Corporation etc.
Among these, at least one selected from polyquaternium-67 and polyquaternium-10 is preferred, and polyquaternium-67 is more preferred.

The component (C) preferably contains both the following components (C1) and (C2) from the viewpoint of further improving the shape fixing power of the hair.
(C1) the hydrophobic cationized hydroxyethyl cellulose (C2) a cationic polymer having a cellulose skeleton other than (C1)

Component (C2) is preferably a cationized hydroxyethyl cellulose other than component (C1), and more preferably a quaternary ammonium salt polymer (INCI name: Polyquaternium-10) obtained by adding glycidyltrimethylammonium chloride to hydroxyethyl cellulose. preferable. Further, as the component (C1) to be combined with the component (C2), a quaternary ammonium salt polymer (INCI name: Polyquaternium-67 ) is preferred.
Although it is not clear why component (C) contains both components (C1) and (C2), the ability to fix the shape of hair can be further improved, but it is speculated as follows.
Component (C2) forms a highly viscous gel and is excellent in adhesion to hair, so that it is easily uniformly adsorbed on the entire hair. On the other hand, the component (C1) forms a low-viscosity gel with excellent water retention, so that the entire hair can be easily coated with the composite gel film, and the binding force can be further improved. Therefore, in the hair cosmetic composition of the present invention, since the component (C) contains both the components (C1) and (C2), it is possible to more uniformly form a film with good binding power over the entire hair. It is considered that the shape fixing force for fixing the shape can be further improved.

In the hair cosmetic composition of the present invention, the mass ratio of component (C2) to component (C1) ((C2)/(C1)) is preferably 0.20 or more from the viewpoint of further improving the shape fixing power of hair. , 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 same viewpoint, preferably It is 2.5 or less, more preferably 2.0 or less, still more preferably 1.5 or less, still more preferably 1.2 or less. Taking these viewpoints together, 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 2.5. 0 or less, more preferably 0.40 or more and 1.5 or less, 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 is.

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

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, and further preferably 0.10% by mass or more, from the viewpoint of further improving the shape-fixing power of hair. It is preferably 0.30% by mass or more, more preferably 0.40% by mass or more, still more preferably 0.50% by mass or more, and from the same viewpoint, preferably 10.0% by mass or less, more preferably 5. 0% by mass or less, more preferably 3.0% by mass or less, still more preferably 2.0% by mass or less, even more preferably 1.5% by mass or less, even more preferably 1.2% by mass or less, still more preferably 0.5% by mass or less. It is 90% by mass or less. Taking these points together, 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 more5. 0% by mass or less, more preferably 0.30% by mass or more and 3.0% by mass or less, 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 %, more preferably 0.50% by mass or more and 1.2% by mass or less, more preferably 0.50% by mass or more and 0.90% by mass or less.

In the hair cosmetic composition of the present invention, the mass ratio of component (A) to component (B) ((A)/(B)) is preferably 0.01 or more from the viewpoint of further improving the shape fixing power of hair. , 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 from the same viewpoint, preferably 2.0 or less, more preferably It is 1.5 or less, more preferably 1.2 or less. Considering these viewpoints together, the mass ratio of component (A) to component (B) ((A)/(B)) is preferably 0.01 or more and 2.0 or less, more preferably 0.03 or more and 1.0. 5 or less, 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.

In the hair cosmetic composition of the present invention, the mass ratio of component (A) to component (C) ((A)/(C)) is preferably 0.05 or more from the viewpoint of further improving the shape fixing power of hair. , 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 from the same viewpoint, preferably 2.5 or less, more preferably It is 2.0 or less, more preferably 1.5 or less, still more preferably 1.2 or less, still more preferably 1.0 or less. Taking these viewpoints together, the mass ratio of component (A) to component (C) ((A)/(C)) is preferably 0.05 or more and 2.5 or less, more preferably 0.10 or more and 2.5. It is 0 or less, 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.

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, from the viewpoint of further improving the shape-fixing power of hair. % by mass or more, more preferably 1.2% by mass or more, 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 , more preferably 12% by mass or less, more preferably 10% by mass or less, and still more preferably 8.0% by mass or less. Taking these points together, the total content of components (A) to (C) in the hair cosmetic composition of the present invention is preferably 0.5% by mass or more and 25% by mass or less, more preferably 1.0% by mass. 20 mass% or less, more preferably 1.2 mass% or more and 15 mass% or less, still more preferably 1.5 mass% or more and 12 mass% or less, still more preferably 1.5 mass% or more and 10 mass% or less, still more preferably is 1.5% by mass or more and 8.0% by mass or less.

<Other ingredients>
The hair cosmetic composition of the present invention contains an aqueous medium, depending on its mode and dosage form, from the viewpoint of ease of handling and the action and effect of the components (A) to (C). be able to.
Examples of the aqueous medium include water, lower alcohols such as ethanol and isopropyl alcohol; low-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. mentioned. Among these, one type may be used alone, or two or more types may be used in combination. Among these, water is preferably included as the aqueous medium.
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, and still more preferably 70% by mass, from the viewpoint of adjusting the hair cosmetic to an appropriate concentration and viscosity. % or more, more preferably 75 mass % or more, and from the same viewpoint, preferably 99 mass % or less, more preferably 98 mass % or less, still more preferably 97 mass % or less, and still more preferably 96 mass % or less. . Taking these points together, 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, and still more preferably 70% by mass. % or more and 97 mass % or less, more preferably 75 mass % or more and 96 mass % or less.

In addition, the hair cosmetic composition of the present invention may contain other ingredients as appropriate within a range that does not impair the object of the present invention. Such components include, for example, nonionic surfactants, amphoteric surfactants, pH adjusters, aromatic alcohols, antioxidants, oil agents, and component (A), which are components normally blended in hair cosmetics. ~ Polymers other than (C), anti-dandruff agents, vitamins, bactericides, anti-inflammatory agents, preservatives, chelating agents, moisturizing agents, ceramides, coloring agents, eucalyptus polar solvent extracts, mother-of-pearl shells or Proteins obtained from pearls or hydrolysates thereof, honey, royal jelly, proteins obtained from silk or hydrolysates thereof, protein-containing extracts obtained from legume seeds, panax ginseng extract, rice germ extract, fucus extract extracts, aloe extract, lotus extract, pomegranate extract, rose extract, chamomilla extract, licorice extract, alpinia extract, chlorella extract, pearlizing agent, fragrance, pigment, UV absorber , shea butter, rose water, orange oil, eucalyptus oil, organic acids, and the like.

The pH of the hair cosmetic composition of the present invention is not particularly limited as long as it is within a range that can be generally used as a hair cosmetic composition. From the point of view, the addition of an acid or base is preferably 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, More preferably, it is adjusted to 8.0 or less. Taking these points together, the pH of the hair cosmetic composition 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, and still more preferably 5.0 or more and 8.0. It is below.

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

[Hair treatment method]
The hair treatment method of the present invention has a step of applying the above hair cosmetic of the present invention to the hair.
Methods for applying the hair cosmetic to the hair include, for example, coating, spraying or casting the hair, and immersing the hair in the hair cosmetic. The hair to be applied may be dry or wet, preferably after being combed with a brush, comb or the like and then washed and wet. The hair cosmetic may be applied by hand or by rubbing, or by using a brush, comb, or the like. Moreover, the hair to which the hair cosmetic is applied may be all or part of the hair.
The amount of the hair cosmetic applied to the hair is preferably 0.01 or more, more preferably 0.03 or more, and still more preferably 0.03 or more, as a bath ratio to the weight of the applied hair (mass of the hair cosmetic/mass of the applied hair). is 0.05 or more, more preferably 0.08 or more, and is 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. Taking these points together, the amount of the hair cosmetic applied to the hair is preferably 0.01 or more and 20 or less, preferably 0.01 or more and 20 or less, in terms of a bath ratio to the weight of the hair to be applied (mass of hair cosmetic/mass of hair to be applied). Preferably 0.03 to 15, more preferably 0.05 to 10, more preferably 0.08 to 5, still more preferably 0.08 to 1, still more preferably 0.08 to 0.5 is.

After the above step, it is preferable to perform a step of rinsing the hair to which the hair cosmetic has been applied with water. In this case, it is preferable to rinse the hair with water after applying the hair cosmetic to the entire hair in order to allow the hair cosmetic to be sufficiently applied to the hair. The application time is preferably 15 seconds or longer, more preferably 30 seconds or longer, and preferably 5 minutes or shorter, more preferably 3 minutes or shorter. Considering these viewpoints together, the coating 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 is sufficient as long as the excess hair cosmetic on the surface of the hair can be removed, and the time for rinsing 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 burden the body, preferably 15°C or higher and 50°C or lower, more preferably 25°C or higher and 45°C or lower.

After washing with water, the hair is dried naturally by towel drying or the like, or by forced drying using a dryer or the like.
By treating hair, particularly curly hair, with the hair cosmetic of the present invention as described above, the hair can be bundled into a fixed shape and the shape of the bundled hair can be fixed. It is possible to improve the shape fixing force for Therefore, in particular, it is possible to reduce the time and effort required for styling curly hair, and it can be suitably applied.

Preferred aspects of the hair cosmetic of the present invention are further disclosed below with respect to the above-described embodiments.

<1> A hair cosmetic containing the following components (A) to (C).
(A) at least one anionic polymer selected from crosslinked polyacrylic acid and (acrylates/alkyl acrylate (C10-30)) crosspolymer (B) anionic surfactant (C) cationic having a cellulose skeleton polymer

<2> The component (A) preferably contains a crosslinked polyacrylic acid, more preferably a carboxyvinyl polymer, that is, a polymer of acrylic acid crosslinked with pentaerythyl allyl ether, sucrose allyl ether or propylene allyl ether. , the hair cosmetic according to <1>.
<3> Component (B) is preferably polyoxyethylene alkyl ether sulfate, alkylbenzene sulfonate, α-olefin sulfonate, internal olefin sulfonate, alkyl or alkenyl sulfate, alkyl sulfonate, saturated or at least one selected from 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 At least one selected from the group consisting of α-olefin sulfonates, internal olefin sulfonates and polyoxyethylene alkyl ether sulfates, more preferably polyoxyethylene alkyl ether sulfates, more preferably the following formula The hair cosmetic composition according to <1> or <2>, which contains the polyoxyethylene alkyl ether sulfate represented by (I), and more preferably contains at least one selected from sodium laureth sulfate and ammonium laureth sulfate.
R ¹ —O—(CH ₂ CH ₂ O) _p —SO ₃ Y (I)
In formula (I), R ¹ represents a linear or branched alkyl group having 8 to 22 carbon atoms. p indicates 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.
<4> The component (C) preferably contains a cationized cellulose derivative, and more preferably contains at least one selected from cationized cellulose, cationized hydroxyethyl cellulose, cationized hydroxypropyl cellulose, and cationized carboxymethyl cellulose. , and more preferably cationized hydroxyethyl cellulose, according to any one of <1> to <3>.
<5> The component (C) preferably contains hydrophobic cationized cellulose, more preferably contains at least one selected from hydrophobic cationized hydroxyethyl cellulose and hydrophobic cationized hydroxypropyl cellulose, still more preferably hydrophobic cationized hydroxyethyl cellulose, 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 The hair according to any one of <1> to <4>, comprising a hydrophobic cationized hydroxyethyl cellulose having an average molar number of ethyleneoxy groups of 0.01 to 3.0 and an average number of moles of ethyleneoxy groups of 0.5 to 4.0. cosmetics.
<6> The component (C) is preferably a quaternary ammonium salt polymer (INCI name: Polyquaternium-67) obtained by addition reaction of trimethylammonium-substituted epoxide and lauryldimethylammonium-substituted epoxide to hydroxyethyl cellulose, hydroxyethyl cellulose. A quaternary ammonium salt polymer (INCI name: Polyquaternium-10) obtained by adding glycidyltrimethylammonium chloride to hydroxyethylcellulose, a quaternary ammonium salt polymer obtained by addition polymerization of glycidyllauryldimethylammonium chloride to hydroxyethyl cellulose ( INCI name: Polyquaternium-24), and a quaternary ammonium salt polymer (INCI name: Polyquaternium-72) obtained by addition reaction of coconut oil alkyldimethylammonium-substituted epoxide to hydroxyethyl cellulose. , more preferably at least one selected from polyquaternium-67 and polyquaternium-10, more preferably polyquaternium-67, 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 the following components (C1) and (C2).
(C1) the hydrophobic cationized hydroxyethyl cellulose (C2) a cationic polymer having a cellulose skeleton other than the (C1) <8> the component (C2) is preferably a cationized hydroxyethyl cellulose other than the component (C1) and more preferably a quaternary ammonium salt polymer (INCI name: Polyquaternium-10) obtained by adding glycidyltrimethylammonium chloride to hydroxyethyl cellulose.
<9> The component (C1) according to <7> or <8>, wherein the component (C1) contains a quaternary ammonium salt polymer (INCI name: Polyquaternium-67) obtained by addition reaction of a lauryldimethylammonium-substituted epoxide. Hair cosmetics.
<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, and still more preferably 0.40 or more. , more preferably 0.50 or more, 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 The hair cosmetic according to any one of <7> to <9>, more preferably 1.2 or less.
<11> The mass ratio of component (A) to component (B) ((A)/(B)) is preferably 0.01 or more, more preferably 0.03 or more, and still more preferably 0.04 or more. , More preferably 0.05 or more, 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 <1> ~ The hair cosmetic according to any one of <10>.
<12> The mass ratio of component (A) to component (C) ((A)/(C)) is preferably 0.05 or more, more preferably 0.10 or more, and still more preferably 0.20 or more. , more preferably 0.30 or more, 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 The hair cosmetic according to any one of <1> to <11>, more preferably 1.0 or less.
<13> The total content of 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, and still more preferably 1.5% by mass or more, and preferably 25% by mass or less, more preferably 20% by mass or less, even more preferably 15% by mass or less, even more preferably 12% by mass or less, further preferably 10% by mass or less, The hair cosmetic composition according to any one of <1> to <12>, which is more preferably 8.0% by mass or less.
<14> The content of 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, and still more preferably 0.08% by mass. Above, more preferably 0.10% by mass or more, 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. The hair cosmetic according to any one of <1> to <13>, which is 0% by mass or less, more preferably 0.80% by mass or less.
<15> The content of 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, and still more preferably 0.4% by mass. <1> to <14> The hair cosmetic according to any one of items 14>.
<16> The content of 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, and still more preferably 0.40% by mass. Above, more preferably 0.50 mass % or more, and preferably 10.0 mass % or less, more preferably 5.0 mass % or less, still more preferably 3.0 mass % or less, still more preferably 2. 0% by mass or less, more preferably 1.5% by mass or less, more preferably 1.2% by mass or less, and still more preferably 0.90% by mass or less, according to any one of <1> to <15> Hair cosmetics.
<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. , and more preferably 8.0 or less, the hair cosmetic according to any one of <1> to <16>.
<18> The hair cosmetic according to any one of <1> to <17>, which contains an aqueous medium.
<19> 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, more preferably water. , the hair cosmetic according to <18>.
<20> The content of the aqueous medium is preferably 60% by mass or more, more preferably 65% by mass or more, still more preferably 70% by mass or more, still more preferably 75% by mass or more, and preferably 99% by mass. % or less, more preferably 98 mass % or less, still more preferably 97 mass % or less, still more preferably 96 mass % or less, the hair cosmetic composition according to <18> or <19>.
<21> Preferably hair shampoo, hair rinse, hair conditioner, hair treatment, hair pack or hair styling agent, more preferably hair rinse, hair conditioner, hair treatment, hair pack or hair styling agent <1> to <20>.
<22> Any of <1> to <21> is preferably liquid, foamy, paste-like or creamy, more preferably liquid, paste-like or creamy, still more preferably liquid Crab hair cosmetic.
<23> A hair treatment method comprising the steps of: applying the hair cosmetic composition according to any one of <1> to <22> to the hair; and rinsing the hair to which the hair cosmetic composition is applied.
<24> Use of the hair cosmetic composition according to any one of <1> to <22> for fixing the shape of hair.
<25> A method for fixing the shape of hair, comprising applying the hair cosmetic composition according to any one of <1> to <22>.

[Examples 1 to 16, Comparative Examples 1 to 3]
Hair cosmetics having compositions of Examples and Comparative Examples shown in Tables 1 to 3 below were prepared, and evaluation of hair shape fixing power of these hair cosmetics was performed using hair tresses for evaluation. Evaluation results are shown in Tables 1 to 3, respectively.

<Method of blending hair cosmetics>
Components (C1) and (C2) dissolved or uniformly dispersed in water, appropriate amounts of water, and component (B) were placed in a beaker, and these components were uniformly mixed at 80°C. Component (A) uniformly dispersed in water is added to the resulting mixture, cooled to room temperature and uniformly mixed, pH is adjusted to 6 using a pH adjuster (sodium hydroxide), and the hair cosmetic is prepared. Got each.

<Evaluation of shape fixing power of hair>
A curly hair tress weighing 2 g and having a length of 35 cm was washed with a plain shampoo having the composition shown below and thoroughly rinsed with warm water (35-40° C.). Next, 0.2 g of the hair cosmetic having the composition shown in each example and each comparative example was applied to the hair tress and allowed to blend for 1 minute. Then, the hair tress to which the hair cosmetic was applied was rinsed with warm water (35-40° C.) for 30 seconds. Thereafter, the tresses were straightened with a ring comb, dried with a towel, and completely dried with a dryer equipped with a diffuser to obtain tresses for evaluation.
The length of the obtained hair bundle for evaluation and the bundle width at a point of 20 cm from the root of the hair bundle were measured to evaluate the shape fixing power of the hair. The fixing force in the width direction of the hair bundle was evaluated by the bundle width (cm). The fixing force in the lengthwise direction of the hair bundle was evaluated by Δ length (cm)=(length of hair bundle when stretched before treatment)−(length of hair bundle after treatment). It means that the smaller the bundle width and the Δ length, the better the shape-fixing force 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 lightly stretched by hand and the curled hair bundle is straightened.

(Composition of plain shampoo)
[Unit: % by mass]
Polyoxyethylene (2.5) sodium lauryl ether sulfate 15.5
Lauric acid diethanolamide 2.3
Disodium edetate 0.15
Sodium benzoate 0.5
sodium chloride 0.8
Phosphoric acid appropriate amount (pH adjustment)
Perfume Trace amount (less than 0.5)
Methylparaben trace amount (less than 0.5)
water balance
(pH 7.0) Total 100

The annotations of *1 to 6 in Table 1 are shown below. In addition, mass % in Table 1 is the amount of active ingredients.
*1 Carbopol 980 manufactured by Lubrizol Co., Ltd.
*2 Carbopol ETD2020 manufactured by Lubrizol Co., Ltd.
*3 Made by Kao Corporation, Softcare SA-37W
* 4 Emar 170S-A manufactured by Kao Corporation (active ingredient amount 70% by mass)
*5 Softcat SL-100 manufactured by Dow Chemical Co., Ltd.
*6 Poise C-150L manufactured by Kao Corporation

Annotations of *1 to 4 in Table 2 are shown below. In addition, the mass % in Table 2 is the amount of active ingredients.
*1 Carbopol 980 manufactured by Lubrizol Co., Ltd.
* 2 Emar 170S-A manufactured by Kao Corporation (active ingredient amount 70% by mass)
*3 Softcat SL-100 manufactured by Dow Chemical Co., Ltd.
*4 Poise C-150L manufactured by Kao Corporation

Annotations of *1 to 8 in Table 3 are shown below. In addition, mass % in Table 3 is the amount of active ingredients.
*1 Carbopol 980 manufactured by Lubrizol Co., Ltd.
* 2 Emar 170S-A manufactured by Kao Corporation (active ingredient amount 70% by mass)
* 3 Made by STEPAN COMPANY, Bio-Terge AS-40 (active ingredient amount 40% by mass)
*4 Manufacturing example 2
*5 Manufacturing example 1
* 6 Amilite ACS-12 (active ingredient amount 30% by mass) manufactured by Ajinomoto Healthy Supply Co., Ltd.
*7 Softcat SL-100 manufactured by Dow Chemical Co., Ltd.
*8 Poise C-150L manufactured by Kao Corporation

[Methods for measuring various physical properties]
(i) Method for Measuring Double Bond Position of Raw Olefin The double bond position of the raw olefin was measured by gas chromatography (hereinafter abbreviated as GC). Specifically, the starting olefin was reacted with dimethyl disulfide to obtain a dithio derivative, and then each component was separated by GC. As a result, the double bond position of the raw material olefin was obtained from each peak area.
The apparatus and analysis conditions used for measurement are as follows. GC apparatus (trade name: HP6890, manufactured by HEWLETT PACKARD), column (trade name: Ultra-Alloy-1HT capillary column 30 m × 250 μm × 0.15 μm, manufactured by Frontier Lab Co., Ltd.), detector (hydrogen flame ion detector ( FID)), injection temperature 300°C, detector temperature 350°C, He flow rate 4.6 mL/min

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

(iii) Measurement method of mass ratio of hydroxy form/olefin form The mass ratio of hydroxy form/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 identified by subjecting them to MS. As a result, each ratio was obtained from the HPLC-MS peak area.
The equipment and conditions used for the measurements are as follows. HPLC device (trade name: Agilent Technologies 1100, manufactured by Agilent Technologies), column (trade name: L-column ODS 4.6 × 150 mm, manufactured by Chemicals Evaluation and Research Institute), sample preparation (1000-fold dilution with methanol), Eluent A (10 mM ammonium acetate added water), eluent B (10 mM ammonium acetate added methanol), gradient (0 min (A/B = 30/70%) → 10 min (30/70%) → 55 min ( 0/100%) → 65 minutes (0/100%) → 66 minutes (30/70%) → 75 minutes (30/70%)), MS equipment (trade name: Agilent Technologies 1100MS SL (G1946D)), MS Detection (anion detection m/z60-1600, UV240nm)

(iv) Method for measuring content of starting olefin The content of unreacted starting 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 an 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 measurement are as follows. GC device (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 Labs), detector (flame ion detection device (FID)), injection temperature 300 ° C., detector temperature 350 ° C., He flow rate 3.8 mL / min

(v) Method for measuring the content of inorganic compounds The content of inorganic compounds was measured by potentiometric titration or neutralization titration. Specifically, the content of Na ₂ SO ₄ was quantified by determining the sulfate group (SO ₄ ²⁻ ) by potentiometric titration. In addition, the content of NaOH was quantified by neutralization titration with dilute hydrochloric acid.

(Production example 1)
[Production of sodium internal olefin sulfonate (DBP: 4.2)]
In a flask equipped with a stirrer, 7000 g (28.9 mol) of 1-hexadecanol (product name: Calcol 6098, manufactured by Kao Corporation) and 350 g of γ-alumina (manufactured by STREM Chemicals, Inc.) as a solid acid catalyst (raw material alcohol 5% by mass relative to the total amount) was added, and the reaction was carried out for 8 hours under stirring at 280° C. while circulating nitrogen (7000 mL/min) in the system. The alcohol conversion rate after completion of the reaction was 100%. The obtained crude alkene internal olefin was transferred to a distillation flask and distilled at 136 to 160° C./4.0 mmHg to obtain raw material olefin a1 having 16 carbon atoms and olefin purity of 100%. The double bond distribution of the obtained raw material olefin a1 was 1.8% by mass at C1, 21.8% by mass at C2, 18.7% by mass at C3, 18.6% by mass at C4, and 14.3% at C5. % by mass, 11.4% by mass at C6-position, 13.6% by mass in total at C7 and 8-positions, and the average double bond position was 4.17.
The raw material olefin thus obtained is placed in a thin-film sulfonation reactor having an external jacket, and the sulfonation reaction is carried out using sulfur trioxide gas under the condition that cooling water at 10°C is passed through the outer jacket of the reactor. rice field. The SO ₃ /internal olefin molar ratio during the sulfonation reaction was set at 1.01. The resulting sulfonated product was mixed with an alkaline aqueous solution prepared with 1.04 moles of sodium hydroxide (alkaline agent) relative to the theoretical acid value, and neutralized at 30° C. for 1 hour by a continuous method. The resulting neutralized product was hydrolyzed by heating in an autoclave at 170° C. for 1 hour to obtain sodium internal olefin sulfonate 1 having 16 carbon atoms. The content of raw material olefin contained in the obtained sodium internal olefin sulfonate 1 having 16 carbon atoms was 0.4% by mass, and the content of inorganic compounds was 0.39% by mass.

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

From Tables 1 to 3, in the evaluation of the hair bundle shape-fixing power, the hair cosmetics of this example had small bundle width and Δ length, and improved hair bundle shape-fixing power. That is, according to the hair cosmetic composition of the present invention, it is possible to improve the shape-fixing force for fixing the shape of the bundled hair while bundling the hair to impart a certain shape. It can be understood that curly hair such as hair can be bundled and fixed in a straight shape.

Claims (9)

A hair cosmetic containing the following components (A) to (C).
(A) at least one anionic polymer selected from crosslinked polyacrylic acid and (acrylates/alkyl acrylate (C10-30)) crosspolymer (B) anionic surfactant (C) cationic having a cellulose skeleton polymer 2. The hair cosmetic according to claim 1, wherein said component (C) contains both of the following components (C1) and (C2).
(C1) Hydrophobic cationized hydroxyethyl cellulose (C2) Cationic polymer having a cellulose skeleton other than (C1) The hair cosmetic according to claim 2, wherein the mass ratio ((C2)/(C1)) of said component (C2) to said component (C1) is 0.20 or more and 2.5 or less. The hair cosmetic composition according to any one of claims 1 to 3, wherein the content of component (A) is 0.01% by mass or more and 5.0% by mass or less. The hair cosmetic composition according to any one of claims 1 to 4, wherein the content of component (B) is 0.1% by mass or more and 10% by mass or less. The hair cosmetic composition according to any one of claims 1 to 5, wherein the content of component (C) is 0.05% by mass or more and 10.0% by mass or less. The hair cosmetic composition according to any one of claims 1 to 6, wherein the mass ratio ((A)/(B)) of said component (A) to said component (B) is 0.01 or more and 2.0 or less. The hair cosmetic composition according to any one of claims 1 to 7, wherein the mass ratio ((A)/(C)) of said component (A) to said component (C) is 0.05 or more and 2.5 or less. A hair treatment method comprising the steps of: applying the hair cosmetic composition according to any one of claims 1 to 8 to hair; and rinsing the hair to which the hair cosmetic composition has been applied.

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