JP2013018721A - Emulsified composition for hair treatment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an emulsified composition for hair treatment for hair modification capable of improving setting property of hair without generating unnatural touch caused by a residual component on the surface of hair and a hair damage caused by chemical treatment, and to provide a method for utilizing the composition.SOLUTION: This emulsified composition for hair treatment contains following components A, B, C1, and C2; component A: an L-ascorbic acid compound in which 8-32C acyl group is substituted on 6 position, component B: an inorganic acid, an organic acid or a salt thereof in which the first acid dissociation constant pKin the water is 2-4, component C1: an aromatic alcohol in which the octanol-water partition coefficient ClogP is 1-2, and component C2: diol in which the octanol-water partition coefficient ClogP is -1 to 0.

Description

  The present invention relates to an emulsified composition for treating hair.

  Realizing the ideal style is the biggest concern for consumers. Moreover, it is ideal that the desired hairstyle can be freely arranged according to the TPO. In order to realize such needs, there has been proposed a technique for modifying hair so that it can be shaped reversibly and as desired, such as straight and curl.

  Hair is given a new shape by recombining the hydrogen bonds existing in it using water, heat, and the weight (tension) during styling, and then wetted with water to restore the original shape. It has a property (set property) that can give a reversible shape such as returning. However, in order for ordinary consumers who do not have special beauty techniques to arrange their hair freely into a desired hairstyle, the setability of natural hair is insufficient. Therefore, there has been proposed a technique for improving the setting of natural hair and improving the hair so that it can be easily arranged freely.

  As a hair modification technique for improving such setability, a technique for modifying hair by using chemical treatment such as reduction and / or oxidation (Patent Documents 1 and 2), sugar, amino acid, Examples include a technique for modifying by infiltrating an enzyme (Patent Documents 3 to 4) and a technique for modifying a film forming or sticking polymer by adhering to the hair surface (Patent Documents 5 to 6).

JP 2006-232791 A JP 2007-505819 A JP 2007-131581 A JP 2009-108085 A JP 2000-86463 A JP 2010-126521 A

  However, in the conventional technical level, a hair modification technique for improving the setability of the hair without damaging hair while maintaining the feel of natural hair has not yet been found. Accordingly, the present invention provides an emulsified composition for treating hair that can improve hair setting without causing unnatural touch due to residual components on the hair surface and hair damage due to chemical treatment, and use of the composition. Provide a method.

The present invention provides an emulsified composition for treating hair comprising the following components A, B, C1, and C2:
Component A: L-ascorbic acid compound in which an acyl group having 8 to 32 carbon atoms is substituted at the 6-position,
Component B: Inorganic acid or organic acid having a primary acid dissociation constant pKa _{1 in} water of 2 to 4, or a salt thereof,
Component C1: relates to an aromatic alcohol having an octanol / water partition coefficient ClogP of 1 to 2, and Component C2: a diol having an octanol / water partition coefficient ClogP of -1 to 0.

By modifying the interior of the hair using the emulsified composition for hair treatment according to the present invention, it is possible to improve the setability of the hair without causing unnatural touch due to residual components on the hair surface and hair damage due to chemical treatment. it can.
Further, the hair care method according to the present invention can freely arrange one's own hair into a desired hairstyle even for ordinary consumers who do not have special beauty techniques.

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

The present invention relates to an emulsified composition for hair treatment comprising the following components A, B, C1, and C2;
Component A: L-ascorbic acid compound in which an acyl group having 8 to 32 carbon atoms is substituted at the 6-position,
Component B: Inorganic acid or organic acid having a primary acid dissociation constant pKa _{1 in} water of 2 to 4, or a salt thereof,
Component C1: aromatic alcohol having an octanol / water partition coefficient ClogP of 1 to 2, and component C2: a diol having an octanol / water partition coefficient ClogP of −1 to 0.
Hereinafter, each component will be described in detail.

  Component A of the present invention is an L-ascorbic acid compound in which an acyl group having 8 to 32 carbon atoms is substituted at the 6-position, specifically, ascorbyl 6-caprylate, ascorbyl 6-caprate, 6-laurin Ascorbyl acid, 6-ascorbyl palmitate, 6-ascorbyl stearate, 6-oleic acid ascorbyl, 6-linoleic acid ascorbyl, 6-linolenic acid ascorbyl, 6-arachidic acid ascorbyl, 6-behenic acid ascorbyl, 6-lignoseric acid ascorbyl , Ascorbyl 6-hexacosanoate, ascorbyl 6-octacosanoate, ascorbyl 6-triacontanoate, and ascorbyl 6-dotriacontanoate.

  From the viewpoints of improving hair setting properties and compatibility with hair treatment emulsion compositions (emulsion structure stability, composition coloration over time), 6-ascorbyl palmitate, 6-ascorbyl stearate, 6 -Ascorbyl arachidate, ascorbyl 6-behenate, ascorbyl 6-lignocerate, ascorbyl 6-hexacosanoate, ascorbyl 6-octacosanoate, ascorbyl 6-triacontanoate, ascorbyl 6-dotriacontanoate, preferably 22 to 22 carbon atoms An L-ascorbic acid compound substituted with 26 acyl groups is more preferred. Specific examples include 6-behenic acid ascorbyl, 6-lignoceric acid ascorbyl, and 6-hexacosanoic acid ascorbyl.

  Component A may be used alone or in admixture of two or more from the viewpoint of the effect of improving hair setability and the stability of the composition, and preferably in the composition. 0.01 to 5.0% by mass, more preferably 0.03 to 4.0% by mass, and still more preferably 0.05 to 3.0% by mass.

Component B of the present invention is an inorganic acid or organic acid having a primary acid dissociation constant pKa ₁ in water of 2.0 to 4.0, or a salt thereof. Specifically, phosphoric acid (pKa) is used as the inorganic acid. ₁ = 2.12) and organic acids include glycolic acid (3.88), lactic acid (3.86), malic acid (3.46), tartaric acid (3.04), and citric acid (3.15). It is done. From the viewpoint of improving the hair setting property, the feel of the hair after modification, and the stability of the composition, phosphoric acid (salt) or an organic acid having a pKa ₁ of 3.3 to 3.9 or those More preferred are glycolic acid, lactic acid, malic acid or their salts.

Examples of the salt of component B of the present invention include alkali metal salts, alkaline earth metal salts, ammonium salts, and salts of organic amine compounds.
Component B may be used alone or in admixture of two or more in the composition from the viewpoint of improving the hair setability and the stability of the emulsified composition for treating hair. Is preferably 0.01 to 5.0% by mass, more preferably 0.03 to 4.0% by mass, and still more preferably 0.05 to 3.0% by mass.

  The component C1 of the present invention uses an aromatic alcohol having an octanol / water partition coefficient ClogP of 1 to 2. Here, ClogP refers to a calculated value of the octanol-water-partition coefficient (logP) defined by the following equation, which is a measure representing the distribution of substances between the octanol phase and the aqueous phase, An example is described in Vol. 71, No. 6 (1971).

log P = log ([substance] _octanol / [substance] _water )

[In the above formula, [substance] _octanol indicates the molar concentration of the substance in the 1-octanol phase, and [substance] _water indicates the molar concentration of the substance in the _aqueous phase. ]

  Specifically, from the viewpoint of the effect of improving the hair setting property based on the permeability of component A to hair, benzyl alcohol (ClogP = 1.1), phenoxyethanol (1 .2), 2-benzyloxyethanol (1.2) is used.

  On the other hand, the component C2 has a ClogP of -1 to 0 from the viewpoint of the effect of improving the hair setability based on the dispersibility of the aromatic alcohol having components A and ClogP of 1 to 2 in the emulsion composition for hair treatment. Propylene glycol (-0.92), dipropylene glycol (-0.69), 1,3-butanediol (-0.29) are used as the diol.

  The aromatic alcohol of component C1 and the diol of component C2 are each used alone or in combination of two or more from the viewpoint of the effect of improving hair setability and the stability of the emulsion composition for hair treatment. May be. From the above two viewpoints, it is more preferable to use benzyl alcohol and dipropylene glycol, benzyl alcohol and 1,3-butanediol, or benzyl alcohol and propylene glycol in combination.

About component C1, Preferably it is 0.05-5.0 mass% in this composition, More preferably, it is 0.1-4.0 mass%, More preferably, it is 0.2-3.0 mass%, About C2, Preferably it is 0.1-10.0 mass% in this composition, More preferably, it is 0.2-7.5 mass%, More preferably, 0.3-5.0 mass% is mix | blended. .
The content ratio (C1 / C2, mass ratio) of the components C1 and C2 is preferably 1/1 to 1/20, more preferably 1 / 1.5-1 to 1 from the viewpoint of promoting the function of each component. / 16.

  In the present invention, a specific L-ascorbic acid compound as component A, a specific inorganic acid or organic acid or a salt thereof as component B, an aromatic alcohol exhibiting a specific partition coefficient, and an aromatic alcohol of component C1 Is used in combination with specific diols having different partition coefficients, and the setability is improved by the synergistic effect of these components.

  Here, the component A interacts with the hair to enhance the setting property, the component B enhances the interaction between the component A and the hair, and the components C1 and C2 improve the selectivity of the penetration site. The effect was considered, and the excellent effect of the present invention was recognized by the composition of these components.

  Furthermore, in the present invention, Component D is selected from the group consisting of ether amines, amidoamines, and quaternary ammonium salts from the viewpoint of the effect of improving the setting properties of the hair based on the dispersibility of Component A in the emulsified composition for treating hair. One or two or more cationic surfactants may be used in the emulsified composition for hair treatment.

  The ether amine is represented by the following general formula (1).

In [Equation (1), R ¹ represents a linear or branched alkyl or alkenyl group having 6 to 24 carbon atoms, R ² and R ³ are the same or different alkyl group having 1 to 6 carbon atoms or A group-(AO) _m H (A represents an alkylene group having 2 to 4 carbon atoms, m represents a number of 1 to 6, m m may be the same or different, and the arrangement thereof is arbitrary) . ]

  Preferable specific examples of the ether amine of the present invention include N, N-dimethyl-3-hexadecyloxypropylamine and N, N-dimethyl-3-octadecyloxypropylamine.

  Amidoamine is represented by the following general formula (2).

[In the formula (2), R ⁴ represents a linear or branched alkyl group having 17 to 21 carbon atoms, two R ⁵ represent the same alkyl group having 1 to 4 carbon atoms, and n represents 2 to 2 The number 4 is shown. ]

  Preferred examples of the amidoamine of the present invention include stearic acid dimethylaminoethylamide, stearic acid dimethylaminopropylamide, stearic acid diethylaminoethylamide, stearic acid diethylaminopropylamide, stearic acid dipropylaminoethylamide, stearic acid dipropylaminopropyl. Examples include amide, behenic acid dimethylaminopropylamide, and behenic acid diethylaminopropylamide, and stearic acid dimethylaminopropylamide, stearic acid diethylaminoethylamide, behenic acid dimethylaminopropylamide, and behenic acid diethylaminopropylamide are more preferable.

  The quaternary ammonium salt is represented by the following general formula (3).

[Wherein R ⁶ represents a linear or branched alkyl group or alkenyl group having 12 to 24 carbon atoms, and X ⁻ represents an anion. ]

Specific preferred examples of the quaternary ammonium salt of the present invention include lauryltrimethylammonium salt, palmityltrimethylammonium salt, stearyltrimethylammonium salt, oleyltrimethylammonium salt, aralkyltrimethylammonium salt, behenyltrimethylammonium salt, and the like. Stearyl trimethyl ammonium salt and behenyl trimethyl ammonium salt are more preferable. In addition, as the anion X ⁻ , halide ions such as chloride ion and bromide ion; inorganic and organic anions such as methosulfate ion, ethosulfate ion, methophosphate ion, ethophosphate ion, methocarbonate ion, etc. Halide ions are preferable, and chloride ions are more preferable.

  In the present invention, an aliphatic alcohol having 12 to 24 carbon atoms may be used as the component E. Preferable specific examples of the aliphatic alcohol of the present invention may be linear or branched, saturated or unsaturated aliphatic alcohols, preferably those having 14 to 22 carbon atoms, and more preferably 16 to 16 carbon atoms. What is 22 is preferable. Specific examples include lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, aralkyl alcohol, hexyl decanol, isostearyl alcohol, oleyl alcohol, 2-octyldodecanol and the like. Of these, stearyl alcohol, cetyl alcohol, and behenyl alcohol are preferred from the viewpoint of the effect of improving the hair setting properties based on the dispersibility of component A in the emulsified hair treatment composition. These can be used alone or in combination of two or more.

  The pH of the emulsified composition for hair treatment of the present invention is a value measured after 10-fold dilution with water. From the viewpoint of maintaining the penetration of component A into hair and enhancing the interaction between hair and component A, pH 2 0.0-6.0 is preferable, pH 2.5-5.0 is more preferable, and pH 3.0-4.0 is still more preferable. The pH of the composition is such that the inorganic acid or organic acid of component B and their alkali metal, alkaline earth metal, ammonium, or organic amine salt are mixed, or the inorganic acid or organic acid of component B and the alkaline agent Can be prepared by mixing.

  The form of the emulsified composition for hair treatment of the present invention can be appropriately selected from liquid form, paste form, cream form, wax form and the like, but as a diluent depending on the form, from the viewpoint of stability of the composition, water or lower Those using the alcohol are preferred.

  In order to formulate the emulsified composition for hair treatment of the present invention, in addition to the components described above, components used in the normal cosmetic field can be added depending on the purpose. Examples of such optional components include a touch improver, a hair repair agent, a chelating agent, a thickener, an antiseptic, an antioxidant, a moisturizer, an ultraviolet absorber, and a fragrance.

  The emulsified composition for hair treatment of the present invention can care for hair while being heated with a heating device.

  The present invention provides a hair care method in which a hair treatment emulsified composition is applied to a part or the whole of the hair, and then the hair in a state of being rinsed off (rinse off) or not rinsed away (leave on) is heated, etc. This is a method for caring for hair, which includes the step of styling hair while heating.

  In addition, the heating temperature by a heating instrument is 60 degreeC or more and less than 100 degreeC. Specific examples of preferable heating devices of the present invention include hair dryers and hot curlers. Moreover, the same effect is acquired by setting heating temperature to less than 100 degreeC also in the heating appliance whose normal heating temperature is 100 degreeC or more.

  Next, the present invention will be described more specifically with reference to examples and comparative examples. Setability is the ease of shaping each individual is born based on the recombination of hydrogen bonds present in the hair. The effect of the present invention was confirmed by examining how much the set property was improved by the compositions shown in the examples and comparative examples. The outline is as follows. First, the hair treatment compositions of the examples and comparative examples are prepared according to the formulation in Table 1, and the hair is treated according to the hair treatment method and the set property evaluation method / determination criteria described later, thereby improving the set property. Table 2 shows the determination results.

<Hair treatment method and set property evaluation method>
(1) First, a non-chemically treated hair (straight hair) of a Japanese woman is used to create an evaluation tres having a length (L ₀ ) of 20 cm and a mass of 0.1 g.
(2) Each Example and Comparative Example shown in Table 1 is applied to the above-mentioned tres at a ratio of 1: 2, left at room temperature for 15 minutes, and rinsed with water for 30 seconds.
(3) Leave at room temperature and relative humidity 65% for a day and night.
(4) Wrap the aforementioned tres around a curler with a diameter of 26 mm heated to 75 ° C., hold for 10 seconds, and then quickly remove the tres from the curler.
(5) After cooling for 10 seconds, the tres was hung, the length (L) from the upper end to the lower end was measured, and the wave efficiency was determined according to Equation 1. Here, the natural setting property of the non-chemically treated hair of the Japanese woman used this time (setting property without any treatment) was 35%.

[Formula 1]
Wave efficiency after processing (%) = [L ₀ −L] / L ₀ × 100 (Formula 1)

<Criteria>
From the natural setability (35%) and the setability after the treatment determined by the above-described method, the improvement rate of the setability was obtained according to Equation 2.
The higher the numerical value, the better the improvement in setability. In general, if it is less than 10%, it is difficult to recognize the improvement effect.

[Formula 2]
Improvement rate of setability (%) = wave efficiency after processing−35 (Formula 2)

  In addition, Comparative Example 1 is a configuration (base) of B to E that does not contain Component A. In Comparative Example 2, L-ascorbic acid, which is a similar skeleton of Component A, is added to the above base. . Moreover, all the compounding quantities of the following Table 3-5 are the mass%.

Example 3: Hair conditioner

* 1: BRS-661C Kao Corporation
* 2: SH200C Toray Dow Corning Co., Ltd.

  A suitable amount of hair conditioner prepared according to Example 3 is applied to the shampooed hair and rinsed. Dry the hair after towel drying with a dryer whose heating temperature is 75 ° C (temperature of hot air at the outlet of the dryer), and then set the hair (no swell, good flow of hair, no floating / hairy hair) and As a result of investigating the touch (non-paddy, smoothness), it was confirmed that the hairstyle was firmly organized and calmed, and the hair damage feeling was suppressed.

Example 4: Leave-on treatment

* 3: Silicone SM8704C Toray Dow Corning Co., Ltd.

  After applying a suitable amount (about 3g) of the leave-on treatment prepared in accordance with Example 4 to wet hair, the hair mass after drying the hair with a hair dryer (no swell, good flow of hair, floating hair As a result of investigating the texture and the touch (no padding, smoothness), it was confirmed that the hairstyle was firmly organized and that the hair damage feeling was suppressed.

Example 5: Sleeping water

  After spraying the bedclothing water adjusted according to Example 5 onto the bedclothes and getting used to it, it was confirmed that the bedclothes could be easily repaired as a result of adjusting the hair with a hair dryer.

Claims (8)

An emulsified composition for treating hair comprising the following components A, B, C1, and C2:
Component A: L-ascorbic acid compound in which an acyl group having 8 to 32 carbon atoms is substituted at the 6-position,
Component B: Inorganic acid or organic acid having a primary acid dissociation constant pKa _{1 in} water of 2 to 4, or a salt thereof,
Component C1: an aromatic alcohol having an octanol / water partition coefficient ClogP of 1-2, and
Component C2: A diol having an octanol / water partition coefficient ClogP of −1 to 0. The emulsified composition for hair treatment according to claim 1, wherein Component B is phosphoric acid or an organic acid having a pKa ₁ of 3.3 to 3.9 or a salt thereof.   Component C1 is at least one selected from the group consisting of benzyl alcohol, phenoxyethanol and 2-benzyloxyethanol, and Component C2 is from the group consisting of propylene glycol, dipropylene glycol and 1,3-butanediol. The emulsified composition for hair treatment according to claim 1 or 2, wherein the emulsified composition is at least one or more selected.   The emulsified composition for hair treatment according to any one of claims 1 to 3, comprising at least one cationic surfactant selected from the group consisting of component D: amidoamine, etheramine, and quaternary ammonium salt.   Component E: The emulsified composition for hair treatment as described in any one of Claims 1 thru | or 4 containing a C12 thru | or C24 aliphatic alcohol.   The emulsified composition for hair treatment according to any one of claims 1 to 5, wherein the pH of the composition is 2.0 to 6.0.   The step of applying the emulsified composition for hair treatment according to any one of claims 1 to 6 to a part or the whole of the hair, and then the hair in a state of being rinsed off (rinse off) or not rinsed away (leave on). A method for caring for hair, which includes a step of styling hair while heating.   The hair care method according to claim 7, wherein the heating temperature is 60 ° C or higher and lower than 100 ° C.