JP2013032326A - Hair cosmetic composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To impart smoothness and settlement to hair, to maintain the effect until immediately before next day's shampoo, impart no sticky feeling to the hair after conditioning, impart cooling feeling, and to provide a comfortable feeling.SOLUTION: This hair cosmetic composition includes a component A, component B, and component C. The component A is polyamine of a weight-average molecular weight Mw of 1,000-50,000. The component B is a fatty acid selected from terminal branched fatty acid (B-1) represented by formula (1) and mixed fatty acid (B-2) of 14-22C straight-chain fatty acid and isostearic acid (mixing ratio (mass) is 0.25-4.0). In the formula, Rshows a methyl group or ethyl group, and n shows an integer of 9-17. The component C is a cationic or anionic surfactant.

Description

  The present invention relates to a hair cosmetic composition.

  Patent Document 1 describes a styling that provides a hair surface with a moisture-proof barrier that is water-resistant and cannot be transferred such as pigments, in order to prevent hair from becoming untidy by absorbing water in a high-humidity environment. Disclosed is a styling treatment composition containing at least one polyamine, at least one acid, at least one water-insoluble component, at least one film former, and a solvent. In Cited Document 1, when such a composition is applied to hair, it is water resistant, prevents shrinkage under high humidity, combs after shampooing, curl retention under high humidity, etc. It is described that it exhibits an excellent effect.

European Patent Application No. 2067467

  In recent years, conditioning agents are expected to have a conditioning effect that imparts a smooth and light feel to hair. However, in patent document 1, examination from such a viewpoint is not made.

  In addition, techniques for imparting smoothness and cohesion to hair only with polycations or fatty acids have already been reported, but they are not durable and the feeling of smoothness and cohesion falls before the next day's shampoo. Furthermore, the conditioning effect can be enhanced by adding a large amount of polycation or fatty acid. However, in this case, the hair feels sticky, the hair is difficult to align, and a heavy feel remains.

  When the hair does not feel sticky, it is possible to realize lightness because each hair is easy to loosen, and since the hair is more easily aligned, it feels cool when touched by hand, It has been found by the present inventors that the feeling is pleasant.

  Therefore, the present inventors use hair cosmetics in which a specific polycation, polyamine, and a specific fatty acid are combined to impart smoothness and unity to the hair, and the effect is maintained until immediately before shampooing the next day. I found out that I can make it. In addition, such hair cosmetics do not give a feeling of stickiness to the hair, make it easy to separate each hair, realize lightness, and make the hair easy to align, giving a cool feeling. The present invention was completed by finding that a pleasant touch can be obtained.

The present invention is a hair cosmetic composition comprising component A, component B and component C;
Component A: polyamine having a weight average molecular weight Mw of 1000 to 50000,
Component B: a terminally branched fatty acid (B-1) represented by the following formula (1) or a mixed fatty acid of 14 to 22 linear fatty acid and isostearic acid (mixing ratio (mass) is 0.25 to 4) 0.0) Fatty acid selected from (B-2)

(In the formula, R ¹ represents a methyl group or an ethyl group, and n represents an integer of 9 to 17).
Component C: Cationic or anionic surfactant.

The present invention is a hair treatment composition comprising component A, component B and component C;
Component A: polyamine having a weight average molecular weight Mw of 1000 to 50000,
Component B: a terminally branched fatty acid (B-1) represented by the following formula (1) or a mixed fatty acid of 14 to 22 linear fatty acid and isostearic acid (mixing ratio (mass) is 0.25 to 4) 0.0) Fatty acid selected from (B-2)

(In the formula, R ¹ represents a methyl group or an ethyl group, and n represents an integer of 9 to 17).
Component C: Cationic or anionic surfactant.

Further, the present invention provides a hair cosmetic composition containing component A, component B, and component C to hair,
After the step, rinsing the hair with water;
Is a method for treating hair.

  The present invention imparts smoothness and cohesion to the hair, can maintain the effect until just before the next day's shampooing, does not give the hair a sticky feeling after the conditioning treatment, gives a cool feeling, and provides a comfortable feel. can get.

  Hereinafter, the present invention will be described based on preferred embodiments thereof.

The present invention relates to a hair cosmetic composition comprising component A, component B and component C;
Component A: polyamine having a weight average molecular weight Mw of 1000 to 50000,
Component B: Terminally branched fatty acid (B-1) represented by the following formula (1), and mixed fatty acid of 14 to 22 linear fatty acid and isostearic acid (mixing ratio (mass) is 0.25 to 4. 0) Fatty acids selected from (B-2)

(In the formula, R ¹ represents a methyl group or an ethyl group, and n represents an integer of 9 to 17).
Component C: Cationic or anionic surfactant.
Moreover, the hair cosmetic composition of this invention can also be used as a hair treatment agent composition, for example.

  The polyamine of component A preferably has a weight average molecular weight of 1000 to 50000, more preferably 2000 to 30000, most preferably from the viewpoint of maintaining the smoothness and cohesion of the hair and providing no stickiness. Preferably it is 3000-20000. In addition, a weight average molecular weight is measured by well-known measuring methods, such as a gel permeation chromatography (GPC), As an example of a measuring apparatus, Tosoh HLC-8220 series etc. are mentioned.

  Examples of such polyamines include polyallylamine, polyvinylamine, polyethyleneimine, polylysine, and polymers of (meth) acrylic acid derivatives containing an amino group in the molecule.

  Polyallylamine can be obtained as an aqueous solution. Examples of commercially available polyallylamine include, for example, “PAA-01”, “PAA-03”, “PAA-05”, “PAA-10”, “PAA-10C”, “PAA-15C”, “PAA-15C”, “ PAA-25 "and the like. Polyallylamine can also be synthesized by a known method such as the method described in JP-A-60-106801.

  A commercially available product can be used as the polyvinylamine. As a commercial item of polyvinylamine, for example, Lupamine series manufactured by BASF and the like can be mentioned. Polyvinylamine can be produced by the methods described in JP2003-147007 and JP2006-257287.

  A commercially available product can be used as the polyethyleneimine. Examples of commercially available polyethyleneimine include Epomin SP006, 018, and P1000 manufactured by Nippon Shokubai Co., Ltd.

  A commercially available product can be used as polylysine. Examples of commercially available polylysine include ε-polylysine 25% aqueous solution manufactured by Chisso Corporation.

  A polymer of a (meth) acrylic acid derivative containing an amino group in the molecule (hereinafter also referred to as an amino group-containing acrylic acid polymer) is a polymer containing a monomer represented by the following formula (2).

(R ² and R ³ are the same or different and are a hydrogen atom or a methyl group; R ⁴ and R ⁵ are the same or different, and are linear or branched alkyl groups having 1 to 30 carbon atoms. Z is an NH group or an oxygen atom; l is an integer of 2 to 5.)

  Specific examples of the monomer represented by the above formula include dimethylaminoethyl methacrylate, dimethylaminoethyl acrylate, diethylaminoethyl methacrylate, diethylaminoethyl acrylate, dimethylaminopropyl methacrylate, dimethylaminopropyl acrylate, and dimethylaminopropyl methacrylamide, dimethylaminopropyl. Examples include acrylamide and mixtures thereof, preferably dimethylaminopropyl methacrylamide, dimethylaminopropyl acrylamide, and mixtures thereof.

  The amino group-containing acrylic acid polymer may be a homopolymer obtained by polymerizing the monomer of the formula (2), or may be a copolymer copolymerized with the monomer exemplified below. Examples of the monomer to be copolymerized include acrylamide, methacrylamide, diacetone acrylamide, acrylamide and methacrylamide in which nitrogen is substituted with lower alkyl (1 to 6 carbon atoms), acrylic acid or methacrylic acid or an ester thereof, for example, vinyl. Examples include vinyl lactams such as pyrrolidone or vinyl caprolactam, and vinyl ester derivatives.

  The copolymerization ratio of the monomer of the above formula (2) in the amino group-containing acrylic polymer of the present invention is 60 to 100 mol%, preferably 80 to 100 mol%, more preferably 90 to 100 mol% in all monomers. .

  The amino group-containing acrylic acid polymer can be obtained by radical polymerization of a monomer-containing solution according to a conventional method in the presence of a chain transfer agent such as amine, thiol or alcohol.

Among the polyamines, polyallylamine is preferable from the viewpoint of sustaining the effect of imparting smoothness and unity to the hair.
In addition, in the hair cosmetic composition, the polyamine of component A is 0.001 to 10.0% by mass from the viewpoint of imparting smoothness and persistence of the effect of imparting unity and not giving a sticky feeling. It is preferably included at 0.01 to 5.0 mass%, more preferably 0.02 to 5.0 mass%.

  The fatty acid of component B is a terminally branched fatty acid (B-1) represented by the following formula (1) and a mixed fatty acid of 14 to 22 linear fatty acid and isostearic acid (mixing ratio (mass) is 0.25). To 4.0) (B-2).

In the formula, R ¹ represents a methyl group or an ethyl group, and n represents an integer of 9 to 17.

  Specific examples of the terminal branched fatty acid (B-1) include 20-methylheneicosanoic acid, 19-methylheneicosanoic acid, 19-methyleicosanoic acid, 18-methyleicosanoic acid, 18-methylnonadecanoic acid, 17 -Methylnonadecanoic acid, 17-methyloctadecanoic acid, 16-methyloctadecanoic acid, 16-methylheptadecanoic acid, 15-methylheptadecanoic acid, 15-methylhexadecanoic acid, 14-methylhexadecanoic acid, 14-methylpentadecanoic acid, 13- Examples include methylpentadecanoic acid, 13-methyltetradecanoic acid, 12-methyltetradecanoic acid, 12-methyltridecanoic acid, and 11-methyltridecanoic acid. An extract from lanolin, that is, a lanolin fatty acid can also be used.

  Examples of the linear fatty acid having 14 to 22 carbon atoms constituting the mixed fatty acid (B-2) include saturated or unsaturated fatty acids, and saturated fatty acids are preferred from the viewpoint of easy alignment of hair. From the viewpoints of friction after hair drying and unity, the number of carbon atoms is preferably 14 or more, more preferably 16 or more, more preferably 22 or less, and further preferably 20 or less, and more preferably stearic acid having 18 carbons.

  Examples of isostearic acid constituting the mixed fatty acid (B-2) include multi-branched isostearic acid and isostearic acid represented by the following formula (3).

(In the formula, the sum of a, b and c is a + b + c = 15, and b is a branched saturated fatty acid of 1.)

Isostearic acid is a branched fatty acid described in, for example, “Cosmetic Raw Material Standards 2nd Edition Commentary I (1984) Yakuji Nipposha” P.87 (C) Isostearic Acid, the methyl group is a side chain, and the position is specified. Although not described, it is described as a C18 fatty acid obtained by hydrogenating an unsaturated side chain fatty acid by-produced when synthesizing dimer acid from oleic acid.
Such fatty acids can also be used in the present invention.

  Examples of the multi-branched isostearic acid include isostearic acid, isostearic acid N, and isostearic acid T manufactured by NOF. Examples of isostearic acid represented by the formula (3) include isostearic acid EX manufactured by Higher Alcohol Industry. Is mentioned.

  In the mixed fatty acid (B-2), the mixing ratio (mass) of the linear fatty acid and isostearic acid is 0.25 to 4.0 from the viewpoint of imparting smoothness to the hair. Moreover, it is preferable that it is 0.67-1.5.

Moreover, in the hair cosmetic composition, the fatty acid of component B is contained at 0.001 to 10.0% by mass, preferably 0.01 to 5.0% by mass, and 0.02 to 5%. More preferably, it is contained at 0.0 mass%.
Furthermore, it is naturally possible to use (B-1) and (B-2) in combination.

The content ratio (component A / component B) in the composition of component A and component B of the present invention is preferably 1/2, from the viewpoint of imparting smoothness and unity to the hair and giving a cool and comfortable feel. Although it can be used at 9 to 9/1 (mass ratio), it is more preferably 1/3 to 3/1, still more preferably 1/2 to 2/1.
Moreover, the content ratio (component A / component B) in the composition of component A and component B is the component A from the viewpoint of efficiently and continuously imparting smoothness and unity to the hair and giving a cool and comfortable feel. the ratio of the moles _{M B} of the carboxyl group of the number of moles _{M a} and component B of the amino groups is preferably 1.0 / 4.0 to 4.0 / 1.0, 2.0 / 1.0 to 1. 0 / 2.0 is more preferable.

As component C, a cationic or anionic surfactant can be used.
Here, when the hair cosmetic composition of the present invention is used as a conditioner, it is preferable to contain a cationic surfactant as Component C.

  Examples of the cationic surfactant that can be used here include amines of the following formula (4), such as hydroxy ether alkyl amines, ether amines or alkyl amido amines, and quaternary ammonium salts.

  The tertiary amine compound represented by the general formula (4) is shown below.

(In the formula, R ¹¹ may be separated by a functional group represented by —OCO— or —COO— having a total carbon number of 8 to 35, and / or linear or optionally substituted with —OH; A branched alkyl group, an alkenyl group, or an aliphatic acyloxy (polyethoxy) ethyl group, wherein R ¹² and R ¹³ are alkyl groups having 1 to 22 carbon atoms or hydroxyalkyl groups, or poly having a total number of added moles of 10 or less; Indicates an oxyethylene group.)

  The tertiary amine compound that can be used as the component (C) preferably contains one or more of the following tertiary amine compounds (i) to (iii).

(I) Hydroxy ether alkylamine For example, the compound represented by the following general formula (5) is mentioned.

(In the formula, R ¹⁷ represents a linear or branched alkyl group or alkenyl group having 6 to 24 carbon atoms, and R ¹⁸ and R ¹⁹ represent an alkyl group having 1 to 6 carbon atoms or — (AO) _f H ( AO represents an alkyleneoxy group having 2 to 4 carbon atoms, f represents a number of 1 to 6, and f AOs may be the same or different, and the arrangement thereof is arbitrary. Indicates the number.)

  Specific examples include hexadecyloxy (2-hydroxypropyl) dimethylamine and octadecyloxy (2-hydroxypropyl) dimethylamine.

(Ii) Etheramine Examples include compounds represented by the following general formula (6).

(In the formula, R ²⁰ represents a linear or branched alkyl group or alkenyl group having 6 to 24 carbon atoms, and R ²¹ and R ²² represent an alkyl group having 1 to 6 carbon atoms or — (AO) _g H ( AO represents an alkyleneoxy group having 2 to 4 carbon atoms, g represents a number of 1 to 6, and g AOs may be the same or different, and the arrangement thereof is arbitrary).
Specific examples include dimethyl-3-hexadecyloxypropylamine and dimethyl-3-octadecyloxypropylamine.

(Iii) Alkylamidoamines Examples include compounds represented by the following general formula (7).

(In the formula, R ²³ represents a linear or branched alkyl group or alkenyl group having 11 to ²³ carbon atoms, R ²⁴ and R ²⁵ represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and m represents 2) Indicates the number of ~ 4.)
Specific examples include (3- (dimethylamino) propyl) docosanamide and (3- (dimethylamino) propyl) stearamide.

  Examples of the quaternary ammonium salt include a quaternary ammonium salt represented by the following general formula (8).

(In the formula, R ³¹ and R ³² represent a hydrogen atom, an alkyl group having 1 to 28 carbon atoms, or a benzyl group. R ³³ and R ³⁴ represent an alkyl group having 1 to 5 carbon atoms or a hydroxyalkyl group, or a (hydroxy) alkyl group having a polyoxyethylene having an addition mole number of 10 or less, and An ⁻ is a negative group. Indicates ions.)

Here, when R ³¹ or R ³² is an alkyl group, those having 16 to 24 carbon atoms, particularly those having 22 carbon atoms are preferable, and a linear alkyl group is preferable. Examples of An ⁻ include halide ions such as chloride ions and bromide ions, and organic anions such as ethyl sulfate ions and methyl carbonate ions. Halide ions, particularly chloride ions are preferable.

The quaternary ammonium salts, mono-long-chain (carbon number of R ³¹ is from 8 to 28 carbon atoms for R ³² is 1 to 6) quaternary ammonium salts are preferred, specifically, behenyl trimethyl ammonium chloride, stearyl Examples include trimethylammonium chloride, cetyltrimethylammonium chloride, and aralkyltrimethylammonium chloride. Among them, behenyltrimethylammonium chloride and stearyltrimethylammonium chloride are preferable.

  The quaternary ammonium salt also includes an ether type quaternary ammonium salt represented by the general formula (9).

(In the formula, R ⁴¹ represents a linear or branched alkyl group or alkenyl group having 6 to 24 carbon atoms, and R ^{42 to} R ⁴⁴ represent an alkyl group having 1 to 6 carbon atoms, a benzyl group, or — (DO ) _F H (D represents an alkylene group having 2 to 4 carbon atoms, f represents an average added mole number of 1 to 6, f D may be the same or different, and the arrangement thereof is arbitrary.) An ⁻ represents an anion.

Here, R ⁴¹ preferably has 12 to 22 carbon atoms and more preferably 16 to 18 carbon atoms, and a linear alkyl group is preferred. R ^{42 to} R ⁴⁴ are preferably an alkyl group having 1 to 6 carbon atoms and — (CH ₂ CH ₂ O) _k H, and the alkyl group having 1 to 6 carbon atoms is preferably a methyl group or an ethyl group, more preferably a methyl group. Preferably, — (CH ₂ CH ₂ O) _k H is preferably one in which k is 1 to 3, particularly 1. In particular, any one of R ^{42 to} R ⁴⁴ is preferably a methyl group or an ethyl group, and more preferably a methyl group. As An ^{−, the same} as those listed above are preferable.
Examples of ether type quaternary ammonium salts include stearoxypropyltrimethylammonium chloride.

The preferred tertiary amine compound used as the cationic surfactant is (ii) ether amine or (iii) alkylamidoamine from the viewpoint of smoothness at the time of applying the hair cosmetic composition of the present invention to the hair and rinsing. preferable.
Among them, (ii) ether amine is preferable, dimethyl-3-hexadecyloxypropylamine and dimethyl-3-octadecyloxypropylamine are preferable, and dimethyl-3-octadecyloxypropylamine is more preferable.

  The cationic surfactant of component (C) can be used alone or in combination of two or more, and is 0.01 to 20% by weight, particularly 0.1 to 20% by weight in the hair cosmetic composition of the present invention. When it is blended in an amount of 10% by weight, and further 0.5 to 5% by weight, the feeling in use is good and preferable.

  Moreover, when using the hair cosmetic composition of this invention for a washing | cleaning agent, the anionic surfactant which is C component is contained.

  Specific examples of such anionic surfactants include sulfuric acid-based, sulfonic acid-based, and carboxylic acid-based surfactants. Examples of the sulfuric acid type include alkyl sulfates, polyoxyalkylene alkyl ether sulfates, and polyoxyalkylene alkenyl ether sulfates. Examples of the sulfonic acid-based compounds include sulfosuccinic acid alkyl ester salts, polyoxyalkylene sulfosuccinic acid alkyl ester salts, alkane sulfonic acid salts, and the like. Examples of the carboxylic acid-based compounds include higher fatty acid salts and alkyl ether carboxylates. Of these, polyoxyalkylene alkyl ether sulfates and alkyl sulfates are preferred, and those represented by the following general formula (10) or (11) are particularly preferred.

R ¹⁰ O (CH ₂ CH ₂ O) _p SO ₃ M (10)
R ¹⁰ OSO ₃ M (11)
(In the formula, R ¹⁰ represents an alkyl group or alkenyl group having an average carbon number of 10 to 18, M represents a cation derived from an alkali metal, alkaline earth metal, ammonium, alkanolamine, or basic amino acid; Indicates the number of 5.)

Among these, R ¹⁰ in the above general formula (9) is an alkyl group having an average carbon number of 12 to 14, and p is 0.5 to 2 from the viewpoint of achieving both quick foaming during hair washing and a good foam feel. Polyoxyethylene alkyl ether sulfates which are 0 and M is ammonium or sodium are preferred.

  The anionic surfactant of component (C) can be used alone or in combination of two or more kinds, and the content thereof is from the point of foaming at the time of washing the hair, liquidity at the time of use, detergency In the hair cosmetic composition of the present invention, 1 to 30% by mass is preferable, 5 to 25% by mass, and further 8 to 20% by mass is more preferable.

  In the present invention, a specific polyamine as component A, a specific terminal branched fatty acid as component B-1 or a specific mixed fatty acid as component B-2, and a cationic or anionic surfactant as component C When used in combination, the synergistic effect of these components gives the hair smoothness and unity. Furthermore, the synergistic action of the A component and the B component can maintain the effect until just before the next day's shampooing, and it does not give the hair a sticky feeling after the conditioning treatment, giving a cool feeling and obtaining a pleasant feel. Inferred. This is presumed that the water repellency of the B component is efficiently exhibited on the hair surface by binding to the hair surface in a state where the amino group of the component A and the carboxyl group of the component B are bonded by electrostatic interaction. ing.

The hair cosmetic composition of the present invention can be produced by a usual method.
For example, a hair conditioner can be manufactured by the following method. Ion exchange water, acids, and a cationic or anionic surfactant are added as an aqueous phase and heated while stirring. Thereafter, an aliphatic amine is dissolved in an oil phase containing a higher alcohol, a polyamine, and a fatty acid, and then added to the aqueous phase, followed by stirring to emulsify. The hair conditioner base material or shampoo base material is obtained by cooling with stirring.

  The hair cosmetic composition of the present invention uses water or a surfactant during production to obtain a simple fluid composition, but can also be used as a hair treatment agent comprising Component A and Component B.

  In addition to the components described above, components used in the normal cosmetic field can be added to the hair cosmetic composition of the present invention depending on the purpose. Examples of such optional components include solubilizers, surfactants, diluents, organic solvents, touch improvers, hair repair agents, chelating agents, thickeners, preservatives, antioxidants, moisturizers, ultraviolet rays. An absorbent, a pH adjuster, a fragrance | flavor, etc. are mentioned.

The hair cosmetic composition of the present invention also provides a method for treating hair using it. That is, a method for treating hair comprising a step of applying the hair cosmetic composition of the present invention to hair and then a step of rinsing the hair with water is provided.
In the step of applying to hair, the present hair treatment composition is applied to dry or moist hair. The application may be performed by hand or via a tool such as a brush. Thereafter, the composition is swallowed with hands and tools to penetrate the interior or surface of the hair. The time is within 15 minutes, preferably 30 seconds to 5 minutes. The hair is then rinsed with water. Water temperature should just be the temperature which does not become a burden on a body, and 15 to 50 degreeC, Preferably 25 to 45 degreeC is preferable. Rinsing time of 5 seconds to 3 minutes is sufficient.

<Weight average molecular weight measurement (GPC analysis)>
The weight average molecular weights of various polymers obtained in the following synthesis examples were measured by GPC (gel permeation chromatography) under the following conditions.
Column: TSKgel G400PWXL, G2500PWXL made by TOSO
Detector: RI
Column temperature: 40 ° C
_{Eluent: 0.15M Na2SO4, 1% CH 3} COOH / water standard: pullulan

<Polymer Production Example 1>
A glass reactor equipped with a thermometer, a stirrer, a nitrogen inlet tube and a reflux condenser was charged with 5.0 g of dimethylaminopropylacrylamide, 100 g of isopropyl alcohol, and 2,2′-azobis (2,4-dimethylvaleronitrile) V—. 65 mg (manufactured by Wako Pure Chemical Industries, Ltd.) 78 mg was added, mixed under a nitrogen atmosphere, and heated to 80 ° C. Thereto, 35.0 g of dimethylaminopropylacrylamide was added dropwise at a rate of 0.30 g / min. At the same time, 550 mg of V-65 dissolved in 22.0 g of isopropyl alcohol was added dropwise at a rate of 0.18 g / min. . After completion of dropping, the mixture was kept at 80 ° C. for 2 hours and then cooled to room temperature. The solution containing the polymer was concentrated with a rotary evaporator, and 100 g of distilled water was added to the resulting concentrate to dissolve it again. It was put into a dialysis membrane (Spectrum Laboratories, MWCO = 1000), dialyzed in distilled water for 3 days, and dried to obtain a target polymer, polydimethylaminoacrylamide.
As a result of GPC measurement of the obtained polymer, the weight average molecular weight was 4,200.

<Polymer Production Example 2>
In Polymer Production Example 1, instead of dimethylaminopropylacrylamide, a mixture of 35.0 g of dimethylaminopropylacrylamide and 5.0 g of vinylpyrrolidone in advance was used. Among them, 5.0 g was charged in a 500 ml separable flask in advance, and the remaining 35.0 g was dropped according to Production Example 1 to obtain a dimethylaminopropylacrylamide-vinylpyrrolidone copolymer as a target polymer.
As a result of GPC measurement of the obtained polymer, the weight average molecular weight was 4,800.

<Polymer Production Example 3>
In Polymer Production Example 1, instead of dimethylaminopropylacrylamide, 36.0 g of dimethylaminopropylacrylamide, 1.0 g of ethyl acrylate, 1.0 g of tert-butylacrylamide, and 2.0 g of methoxypolyethylene glycol # 400 methacrylate were mixed in advance. A thing was used. Of these, 5.0 g was charged in advance into a 500 ml separable flask, and the remaining 35.0 g was dropped according to Production Example 1 to obtain the desired polymer.
As a result of GPC measurement of the obtained polymer, the weight average molecular weight was 6000.

(Examples 1-19 and Comparative Examples 1-9)
Hair cosmetics shown in Tables 1 to 3 were prepared by a conventional method and evaluated by the following evaluation methods. The result is shown. For example, the hair conditioner of Example 1 can be manufactured by the following method. In a 300 ml beaker, 167.8 g of ion exchange water and 1.38 g of Musashino lactic acid 90 were added as an aqueous phase, and heated to 55 ° C. with stirring with a propeller. Thereafter, 4.90 g of Farmin DM E-80, 11.16 g of stearyl alcohol (Calcoal 8098: manufactured by Kao Corporation), 1.86 g of DPG-RF (same as above), polyallylamine (PAA-03: manufactured by Nittobo Co., Ltd.) An oil phase composed of 00 g and 1.00 g of 18-methyleicosanoic acid was uniformly dissolved at 80 ° C., then added to the aqueous phase, and stirred for 10 minutes at 300 rpm to emulsify. Let cool to 35 ° C. or lower while stirring at 300 rpm to obtain a hair conditioner.

(Evaluation method 1)
The hair of a Japanese woman that had been treated once with straight perm and twice with bleach was treated as damaged hair, and each of the 20 panelists (length 15 to 20 cm, average diameter 80 μm) was treated by five panelists as follows. Sensory evaluation was performed.
After applying 2g of the conditioner shown in each of Tables 1 to 3 to the hair bundle washed with 2g of the standard shampoo of the following formulation, and fully acclimatizing the whole hair, it is about 30 seconds under running water of about 40 ° C. After rinsing, towel drying was performed, and drying was sufficiently performed with a dryer. Evaluation was performed in four stages after drying for one day (24 hours). Evaluation was performed by five panelists, and the integrated value of the evaluation points was obtained.

・ Standard shampoo formulation (pH 7.0)
25% polyoxyethylene (2.5) lauryl ether sulfate sodium salt
62.0% by mass
Lauric acid diethanolamide 2.3% by mass
Edetate disodium 0.15% by mass
Sodium benzoate 0.5% by mass
Sodium chloride 0.8 mass%
75% phosphoric acid appropriate amount Fragrance, methylparaben appropriate amount Purified water remaining

(Evaluation criteria)
(1) Smoothness after 1 day 4: Very smooth 3: Smooth 2: Not very smooth 1: Not smooth

(2) Ease of hair grouping after 1 day 4: Very easy to unite 3: Easy to unite 2: Not easy to unite 1: Not easy to unite

(3) Cool feeling when touching hair after 1 day 4: Very cool 3: Cool 2: Not very cool 1: Not cool

(4) Ease of aligning hair after the lapse of one day 4: Very easy to align hair 3: Easy to align hair 2: Not easy to align hair 1: Not easy to align hair

(Evaluation method 2)
The hair of a Japanese woman that has been treated once with straight perm and twice with bleach is treated as damaged hair, and each 20 g (15 to 20 cm in length, average diameter 80 μm) of hair bundle is used with 2 g of standard shampoo having the above composition. 2g of the conditioner shown in Table 2 is applied to the washed hair bundle, and after fully acclimatizing the entire hair, it is rinsed under running water of about 40 ° C for about 30 seconds, then towel-dried and dried thoroughly with a dryer. I let you. The amount of heat transfer (qmax) shown below for dry hair was repeatedly measured 10 times, and the average value thereof was evaluated as a cool feeling.
Using a KEF-F7 finger robot thermolab (manufactured by Kato Tech Co., Ltd.) as a measuring machine, the measurement site (sensor) was brought into contact with the hair bundle, and the heat transfer amount qmax (mW / cm ² ) at that time was measured.
The amount of heat transfer was measured as follows.
H. Tanamachi, Temperature as a moisture cue in haptics on hair, Int. J. et al. Cos. Sci. , 2011. 33. According to the method described in 25-36, in a 20 ° C. and 40% RH environment, a temperature sensor unit covered with silicone rubber of KEF-F7 finger robot thermolab (manufactured by Kato Tech Co., Ltd.) on a hair bundle of about 20 g. It was warmed to 36 ° C., which was the same as the body temperature, and contacted. The heat of the temperature sensor moves to the hair bundle at the time of contact, and the heat transfer rate q is measured from the change in the heat signal at that time, and the peak value qmax is calculated. The larger the value, the higher the heat transfer speed, and the easier it is to get a cool feeling.

  As a reference example, the hair bundle of 20 g of damaged hair prepared in the above evaluation method 2 was towel-dried on the hair bundle washed with 2 g of the above standard shampoo, and dried sufficiently with a dryer. The amount of movement qmax was measured as described above.

Claims (5)

Hair cosmetic composition comprising component A, component B and component C;
Component A: polyamine having a weight average molecular weight Mw of 1000 to 50000,
Component B: Terminally branched fatty acid (B-1) represented by the following formula (1), and mixed fatty acid of 14 to 22 linear fatty acid and isostearic acid (mixing ratio (mass) is 0.25 to 4. 0) Fatty acids selected from (B-2)

(In the formula, R ¹ represents a methyl group or an ethyl group, and n represents an integer of 9 to 17).
Component C: Cationic or anionic surfactant.   The hair cosmetic composition according to claim 1, wherein the polyamine of component A is polyallylamine.   The hair cosmetic composition according to claim 1 or 2, wherein the molar ratio between the number of moles of amino group of component A and the number of moles of carboxyl group of component B is 1.0 / 4.0 to 4.0 / 1.0. .   The hair cosmetic composition according to any one of claims 1 to 3, wherein the cationic surfactant in Component C is a tertiary amine compound or a salt thereof, or a quaternary ammonium. Applying the hair cosmetic composition according to any one of claims 1 to 4 to the hair;
After the step, rinsing the hair with water;
A method of treating hair comprising: