WO2015133382A1

WO2015133382A1 - Hair conditioner composition

Info

Publication number: WO2015133382A1
Application number: PCT/JP2015/055756
Authority: WO
Inventors: 幸治二宮
Original assignee: ライオン株式会社
Priority date: 2014-03-06
Filing date: 2015-02-27
Publication date: 2015-09-11
Also published as: JPWO2015133382A1; JP6396991B2

Abstract

Provided is a hair conditioner composition including (A) a cationic surfactant, (B) a straight-chain higher alcohol having 16 to 22 carbon atoms, (C) at least one type of a polyalcohol selected from glycerine, sorbitol, and propylene glycol, (D) a zinc pyrithione, and (E) an amino-modified silicone, the content of component (C) being 10 to 50 mass%, and mass ratio (D/C) of the content of component (D) to the content of component (C) being 0.006 to 0.4.

Description

Hair conditioner composition

The present invention relates to a hair conditioner composition.

In Southeast Asia, where the average temperature is 25 ° C or higher and the average relative humidity is about 70% throughout the year, a hot and humid climate is increasing. In recent years, the habit of using a hair conditioner in addition to shampoo is increasing. In such a high temperature and high humidity environment, there is a strong demand for providing a hair conditioner that can prevent hair from becoming heavier and keep the hair light while keeping the hair smooth. In the Southeast Asian hair care market, the proportion of products with anti-dandruff effects is still large, and the provision of hair conditioners with excellent anti-dandruff effects while maintaining the feeling of lightness and smoothness of hair is very strong. It has been demanded.

Until now, hair conditioners such as hair rinses and hair treatments, unlike detergents such as shampoos, have adsorbed and used feeling-imparting agents such as cationic surfactants, silicones, oils and higher alcohols on the hair. Thus, it is possible to give the hair a softness and oily feeling, and to give the hair smoothness and softness.
In addition, the occurrence of dandruff is considered to be caused by the growth of bacteria, and antibacterial agents such as pyridinethione salts represented by zinc pyrithione, benzalkonium chloride, and octopirox are used to suppress dandruff derived from the growth of these bacteria. Or a disinfectant (anti-dandruff agent) is used.
Numerous proposals have been made on hair conditioner compositions using such feeling-in-use imparting agents and anti-dandruff agents (see, for example, Patent Documents 1 to 16).

However, simply combining a conventional hair conditioner composition with a good feeling of use with a conventional anti-dandruff agent will reduce the storage stability of the hair conditioner composition, or it may be hot and humid like Southeast Asia. In this environment, the hairs stick together and feel heavy, the smoothness of the hair is impaired, and it is difficult to increase the persistence of pyrithione zinc, an antidandruff agent, on the skin. At present, improvement is strongly desired.

JP 2000-191450 A JP 2003-55167 A JP 2003-89624 A Japanese Patent Laid-Open No. 2003-201218 JP 2004-2261 A JP 2005-343859 A JP 2006-45126 A JP 2006-45127 A JP 2007-254356 A JP-A-4-112808 JP-A-5-221833 Japanese Patent Laid-Open No. 5-262624 JP 7-48232 A Japanese Patent Application Laid-Open No. 2012-176995 JP 2010-241775 A JP 2003-342131 A

This invention makes it a subject to solve the said various problems in the past and to achieve the following objectives. That is, the present invention exhibits good storage stability, combines lightness of hair in a high temperature and high humidity environment and smoothness of hair in a high temperature and high humidity environment, and increases the skin persistence of pyrithione zinc. An object of the present invention is to provide a hair conditioner composition having an excellent anti-dandruff effect.

As a result of intensive studies by the inventor in order to solve the above problems, (A) a cationic surfactant, (B) a straight chain and higher alcohol having 16 to 22 carbon atoms, (C) glycerin, sorbitol and propylene At least one polyhydric alcohol selected from glycol, (D) pyrithione zinc, and (E) an amino-modified silicone, wherein the content of the component (C) is 10% by mass to 50% by mass A hair conditioner composition having a mass ratio (D / C) of the content of the component (D) and the content of the component (C) of 0.006 to 0.4 is a synergistic effect of each component. It exhibits good storage stability, combines the lightness of hair in high-temperature and high-humidity environments and the smoothness of hair in high-temperature and high-humidity environments. Has a preventive effect I found out.

This invention is based on the said knowledge by this inventor, and as a means for solving the said subject, it is as follows.
<1> (A) at least one cationic surfactant selected from a compound represented by the following general formula (1) and a compound represented by the following general formula (2);

However, in the general formula (1), R ¹ represents an alkyl group, and X ⁻ represents a halogen ion.

In the general formula (2), R ² represents any of a linear or branched alkyl group having 11 to 27 carbon atoms and an alkenyl group. R ³ represents an alkyl group having 1 to 4 carbon atoms. k represents an integer of 2 to 4.
(B) a straight chain higher alcohol having 16 to 22 carbon atoms,
(C) at least one polyhydric alcohol selected from glycerin, sorbitol and propylene glycol;
(D) zinc pyrithione, and
(E) amino-modified silicone,
Containing
The content of the component (C) is 10% by mass to 50% by mass,
A hair conditioner composition having a mass ratio (D / C) of the content of the component (D) and the content of the component (C) of 0.006 to 0.4.
<2> The hair conditioner composition according to <1>, further including (F) dimethyl silicone having a kinematic viscosity at 25 ° C. of 4 million mm ² / s or more.
<3> The hair conditioner composition according to any one of <1> to <2>, wherein the content of component (D) is 0.25% by mass to 2% by mass.
<4> The hair conditioner composition according to any one of <1> to <3>, wherein the content of the component (A) is 1% by mass to 5% by mass.
<5> The hair conditioner composition according to any one of <1> to <4>, wherein the content of the component (B) is 1% by mass to 10% by mass.
<6> The hair conditioner composition according to any one of <1> to <5>, wherein the content of the component (E) is 0.1% by mass to 5% by mass.

According to the present invention, the conventional problems can be solved, the object can be achieved, the storage stability is good, the hair is light in a high-temperature and high-humidity environment, and the high-temperature and high-humidity environment. The hair conditioner composition which combines the smoothness of the hair underneath, increases the skin persistence of pyrithione zinc, and has an excellent anti-dandruff effect.

FIG. 1 is a photograph showing a state in which a cup is attached to the inner part of the forearm in order to measure the amount of pyrithione zinc remaining on the skin. FIG. 2 is a photograph showing a state where tape stripping is performed in the skin persistence test of pyrithione zinc.

(Hair conditioner composition)
The hair conditioner composition of the present invention comprises (A) a cationic surfactant, (B) a higher alcohol, (C) a polyhydric alcohol, (D) pyrithione zinc, and (E) an amino-modified silicone. (F) It is preferable to contain dimethyl silicone, and further contains other components as necessary.

<(A) Cationic surfactant>
The cationic surfactant of the component (A) improves the lightness of hair in a high-temperature and high-humidity environment, the smoothness of hair in a high-temperature and high-humidity environment, and the storage stability of the hair conditioner composition. To contain.
As the cationic surfactant of the component (A), at least one selected from a compound represented by the following general formula (1) and a compound represented by the following general formula (2) is used.

In the general formula (2), R ² represents any of a linear or branched alkyl group having 11 to 27 carbon atoms and an alkenyl group. R ³ represents an alkyl group having 1 to 4 carbon atoms. k represents an integer of 2 to 4.

R ¹ in the general formula (1) is preferably a linear or branched alkyl group having 12 to 28 carbon atoms, more preferably 16 to 24 carbon atoms, and still more preferably 18 to 22 carbon atoms. Among these, a linear alkyl group is particularly preferable.
X ⁻ in the general formula (1) represents a halogen ion, and examples thereof include a chlorine ion, a fluorine ion, and a bromine ion.

Examples of the cationic surfactant represented by the general formula (1) include cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, and behenyltrimethylammonium chloride. These may be used individually by 1 type and may use 2 or more types together. Among these, behenyltrimethylammonium chloride and stearyltrimethylammonium chloride are preferable from the viewpoint of lightness of hair in a high temperature and high humidity environment and storage stability.
Examples of the commercial product of behenyltrimethylammonium chloride include GENAMIN KDMP (manufactured by BASF).
As a commercial item of the said stearyl trimethyl ammonium chloride, ARCARD T800 (made by Lion Akzo Corporation) etc. are mentioned, for example.

R ² in the general formula (2) represents any of a linear or branched alkyl group having 11 to 27 carbon atoms and an alkenyl group, and the carbon number is preferably 15 to 23 and more preferably 21. .
R ³ in the general formula (2) is an alkyl group having 1 to 4 carbon atoms, preferably a methyl group or an ethyl group.

Examples of the amidoamine type surfactant represented by the general formula (2) include stearic acid diethylaminoethylamide, stearic acid dimethylaminoethylamide, palmitic acid diethylaminoethylamide, coconut oil fatty acid diethylaminopropylamide, palmitic acid dimethylamino. Ethylamide, myristic acid diethylaminoethylamide, myristic acid dimethylaminoethylamide, behenic acid diethylaminoethylamide, behenic acid dimethylaminoethylamide, stearic acid diethylaminopropylamide, stearic acid dimethylaminopropylamide, palmitic acid diethylaminopropylamide, palmitic acid Dimethylaminopropylamide, myristic acid diethylaminopropylamide, myristic acid dimethylaminopro Ruamido, behenic acid diethylaminopropylamide, like behenic acid dimethylaminopropylamide. These may be used individually by 1 type and may use 2 or more types together. Among these, dimethylaminopropylamide stearate and diethylaminoethylamide stearate are preferable from the viewpoint of lightness of hair in a high temperature and high humidity environment and storage stability.
As a commercial item of the said dimethylamino propyl amide stearate, kachinal MPAS (made by Toho Chemical Co., Ltd.) etc. are mentioned, for example.
Examples of the commercially available stearic acid diethylaminoethylamide include kachinal AEAS (manufactured by Toho Chemical Co., Ltd.).

The cationic surfactant as the component (A) is particularly preferably behenyltrimethylammonium chloride from the viewpoint of lightness of hair in a high-temperature and high-humidity environment and storage stability.

The content of the cationic surfactant of the component (A) is the lightness of the hair in a high-temperature and high-humidity environment and the smoothness of the hair in a high-temperature and high-humidity environment relative to the total amount of the hair conditioner composition. From the viewpoint of storage stability, 0.5% by mass to 10% by mass is preferable, and 1% by mass to 5% by mass is more preferable. When the content is less than 0.5% by mass, the lightness of hair in a high-temperature and high-humidity environment, the smoothness of hair in a high-temperature and high-humidity environment, and storage stability cannot be obtained. If the amount exceeds 10% by mass, the lightness of the hair in a high temperature and high humidity environment may be adversely affected.

<(B) Higher alcohol>
The higher alcohol of the component (B) is intended to improve the lightness of the hair in a high temperature and high humidity environment, the smoothness of the hair in a high temperature and high humidity environment, and the storage stability of the hair conditioner composition. Contained.
The higher alcohol as the component (B) is a straight chain, higher alcohol having 16 to 22 carbon atoms, and is represented by the following general formula (3).
R ⁴ —OH: General formula (3)
However, in the general formula (3), R ⁴ represents a linear alkyl group having 16 to 22 carbon atoms.
When the carbon number of R ⁴ is less than 16 and exceeds 22, the lightness of the hair under high temperature and high humidity and storage stability may not be obtained. Further, when R ⁴ is a branched, sometimes lightness of the hair in an environment of high temperature and high humidity, and storage stability can not be obtained.

Examples of the higher alcohol as the component (B) include cetyl alcohol, stearyl alcohol, cetostearyl alcohol, and behenyl alcohol. These may be used individually by 1 type and may use 2 or more types together. Among these, cetyl alcohol, cetostearyl alcohol, and stearyl alcohol are preferable from the viewpoint of lightness of hair in a high temperature and high humidity environment and storage stability.
As the higher alcohol of the component (B), a commercially available product can be used. Examples of the commercially available product include cetyl alcohol (Ranette 16), cetostearyl alcohol (Ranette 20), stearyl alcohol (Ranette 18), and behenyl alcohol. (Ranette 22) (both manufactured by BASF).
The content of the higher alcohol as the component (B) is the lightness of the hair in a high-temperature and high-humidity environment, the smoothness of the hair in a high-temperature and high-humidity environment, and storage relative to the total amount of the hair conditioner composition. From the viewpoint of stability, 0.5% by mass to 20% by mass is preferable, and 1% by mass to 10% by mass is more preferable. When the content is less than 0.5% by mass, the lightness of hair in a high-temperature and high-humidity environment, the smoothness of hair in a high-temperature and high-humidity environment, and storage stability cannot be obtained. If the amount exceeds 20% by mass, the lightness of the hair in a high temperature and high humidity environment may be adversely affected.

<Mass ratio (A / B)>
The mass ratio (A / B) between the content of the component (A) and the content of the component (B) is the lightness of the hair in a high-temperature and high-humidity environment and the hair in a high-temperature and high-humidity environment. From the viewpoint of smoothness and storage stability, 0.2 to 2 is preferable. If the mass ratio (A / B) is less than 0.2, it may adversely affect the smoothness of hair in a high-temperature and high-humidity environment, and storage stability may not be obtained. In such a case, the lightness of the hair in a high temperature and high humidity environment may be adversely affected, and storage stability may not be obtained.

<(C) Polyhydric alcohol>
The polyhydric alcohol as the component (C) is contained in order to increase the skin persistence of pyrithione zinc, improve the lightness of the hair in a high-temperature and high-humidity environment, and the storage stability of the hair conditioner composition. .
Examples of the polyhydric alcohol as the component (C) include glycerin, sorbitol, and propylene glycol. These may be used individually by 1 type and may use 2 or more types together. Among these, sorbitol is preferable from the viewpoint of the skin persistence of pyrithione zinc and the lightness of hair in a high-temperature and high-humidity environment.
The content of the polyhydric alcohol of the component (C) is based on the total amount of the hair conditioner composition from the viewpoint of the skin persistence of pyrithione zinc, the lightness of the hair in a high-temperature and high-humidity environment, and the storage stability. 10 mass% to 50 mass%, preferably 12 mass% to 30 mass%. If the content is less than 10% by mass, the skin persistence and storage stability of pyrithione zinc may not be obtained. If the content exceeds 50% by mass, the lightness of the hair in a high-temperature and high-humidity environment. May be adversely affected.

<(D) Zinc pyrithione>
The component (D), zinc pyrithione, is contained to improve the anti-dandruff effect, to lighten the hair in a high-temperature and high-humidity environment, and to give the hair smoothness in a high-temperature and high-humidity environment. .
The pyrithione zinc is sometimes referred to as pyridine-2-thiol-N-oxide zinc or bis [1-hydroxy-2 (H) -pyridinethionate] zinc.
The content of the component (D), pyrithione zinc, is the anti-dandruff effect, the smoothness of the hair in a high temperature and high humidity environment, and the hair in a high temperature and high humidity environment with respect to the total amount of the hair conditioner composition. From the viewpoint of lightness, 0.1% by mass to 5% by mass is preferable, and 0.25% by mass to 2% by mass is more preferable. If the content is less than 0.1% by mass, the anti-dandruff effect and the lightness of the hair in a high-temperature and high-humidity environment may be inferior. If the content exceeds 5% by mass, the environment is high-temperature and high-humidity. The smoothness of the hair underneath may be inferior.

<Mass ratio (D / C)>
The mass ratio (D / C) of the content of the component (D) and the content of the component (C) is the skin persistence of the pyrithione zinc, the smoothness of the hair in a high-temperature and high-humidity environment, and storage From the viewpoint of stability, it is 0.006 to 0.4, preferably 0.008 to 0.2. When the mass ratio (D / C) is less than 0.006, the skin persistence and storage stability of pyrithione zinc may not be obtained. The smoothness of the hair, the skin persistence of pyrithione zinc, and the storage stability may be reduced.

<(E) Amino-modified silicone>
The amino-modified silicone as the component (E) is contained for imparting smoothness of hair under a high temperature and high humidity environment and lightness of the hair under a high temperature and high humidity environment.
The amino-modified silicone as the component (E) is a polymer of organosiloxane having at least one aminoalkyl group in one molecule.
In the organosiloxane forming the amino-modified silicone polymer, those containing a methyl group as a functional group other than an aminoalkyl group are generally used. In addition, alkyl groups such as ethyl group and propyl group; alkenyl groups such as vinyl group and allyl group; aryl groups such as phenyl group and naphthyl group; cycloalkyl groups such as cyclohexyl group; hydroxy group, hydroxyalkyl group and oxyalkylene group Or a polyoxyalkylene group etc. can also be included.
The amino-modified silicone as the component (E) may be pre-emulsified with an emulsifier. There is no restriction | limiting in particular as an emulsifier and the emulsification method at the time of emulsifying the amino modified silicone of the said (E) component, According to the objective, it can select suitably.

Examples of the amino-modified silicone include dimethylsiloxane / methylaminopropylsiloxane (aminopropyldimethicone) represented by the following general formula (4), and aminoethylaminopropylmethylsiloxane / dimethyl represented by the following general formula (5). Siloxane copolymer (amodimethicone name, CTFA dictionary (described in US Cosmetic Ingredient Dictionary) 3rd edition), aminoethylaminopropylsiloxane / dimethylsiloxane copolymer (trimethylsilyl) represented by the following general formula (6) Amodimethicone), or amino-modified silicone emulsion obtained by adding at least one of methylpolysiloxane and water to these and emulsifying with a nonionic surfactant. These may be used individually by 1 type and may use 2 or more types together.

However, in the general formula (4), m and n are independent integers, m represents 1 to 20,000, and n represents 1 to 20,000.

However, in the general formula (5), m and n are independent integers, m represents 1 to 20,000, and n represents 1 to 20,000. a and b are independent integers, a represents 1 to 10, and b represents 1 to 10.

In the general formula (6), m and n are independent integers, m represents 1 to 20,000, and n represents 1 to 20,000. a and b are independent integers, a represents 1 to 10, and b represents 1 to 10.

Examples of the dimethylsiloxane / methylaminopropylsiloxane copolymer (aminopropyl dimethicone) represented by the general formula (4) include KF-8020 and X-52-2362 (both manufactured by Shin-Etsu Chemical Co., Ltd.). Is mentioned. These may be used individually by 1 type and may use 2 or more types together.

Examples of the aminoethylaminopropylmethylsiloxane / dimethylsiloxane copolymer represented by the general formula (5) (described in the third edition of the CTFA Dictionary (US Cosmetic Ingredient Dictionary) in the name of Amodimethicone) include SM- 8904C (manufactured by Toray Dow Corning Silicone Co., Ltd.), XF42-B892, XF42-C0330, XS65-C0032, XS65-C0726, SILSOFT 200 EF (all manufactured by Momentive Performance Materials Japan GK) Can be mentioned. These may be used individually by 1 type and may use 2 or more types together.

Examples of the aminoethylaminopropylsiloxane / dimethylsiloxane copolymer (trimethylsilylamodimethicone) represented by the general formula (6) include FZ-4671, FZ-4672, BY22-079, SF8452C, and SS-3551 (any of them). Also manufactured by Toray Dow Corning Silicone Co., Ltd.), KF-8004, KF-8015, KF-867S (all manufactured by Shin-Etsu Chemical Co., Ltd.), ADM1650, ADM-8101E, ADM-6057E (all Asahi Kasei Wacker Silicone shares) KS65-B4280, XS65-C1539, XS65-6413, XS65-B8124, KF42B1989 (all manufactured by Momentive Performance Materials Japan GK). These may be used individually by 1 type and may use 2 or more types together.
Among these, dimethylsiloxane and methylaminopropylsiloxane represented by the general formula (4) from the viewpoint of smoothness of hair under high temperature and high humidity environment and lightness of hair under high temperature and high humidity environment. SM-8904C corresponding to an emulsion of aminoethylaminopropylmethylsiloxane / dimethylsiloxane copolymer represented by the general formula (5), KF-8020 corresponding to the copolymer, X-52-2362, the general formula FZ-4671 and FZ-4672 corresponding to the emulsion of aminoethylaminopropylsiloxane / dimethylsiloxane copolymer represented by (6) are preferred.

The content of the amino-modified silicone of the component (E) is the smoothness of the hair in a high-temperature and high-humidity environment and the lightness of the hair in a high-temperature and high-humidity environment with respect to the total amount of the hair conditioner composition. From the viewpoint, 0.05 mass% to 10 mass% is preferable, and 0.1 mass% to 5 mass% is more preferable. When the content is less than 0.05% by mass, the effect of improving the smoothness of the hair in a high-temperature and high-humidity environment may not be sufficiently obtained. May adversely affect the lightness of the hair in the environment.

<(F) Dimethyl silicone>
The dimethyl silicone as the component (F) is contained for imparting smoothness of hair under a high temperature and high humidity environment and lightness of the hair under a high temperature and high humidity environment.
The kinematic viscosity at 25 ° C. of the dimethyl silicone as the component (F) is preferably 4 million mm ² / s or more.
The kinematic viscosity at 25 ° C. of the dimethyl silicone can be measured, for example, by the method shown below.
First, a toluene solution of dimethylsilicone having a concentration of 1 g / 100 mL is prepared, and a specific viscosity ηsp (25 ° C.) is obtained by the following formula (7). Next, the intrinsic viscosity [η] is obtained by substituting it into the Huggins relational expression shown in the following formula (8). As the Huggins constant, the one described in Nakamuta, Nikka, 77 588 [1956] is used. Next, the intrinsic viscosity [η] is represented by the following formula (9). Substituting it into the Kololov equation, the molecular weight M is determined.
Finally, the molecular weight M is expressed by A. J. et al. The kinematic viscosity η of dimethyl silicone can be obtained by substituting it into the Barry equation.
ηsp = (η / η ₀ ) −1 Formula (7)
ηsp = [η] + K ′ [η] ² Formula (8)
[Η] = 0.215 × 10 ⁻⁴ M ^0.65 Formula (9)
log η = 1.00 + 0.0123M ^0.5 ... Formula (10)
In the formula (7), η ₀ represents the viscosity of toluene, and η represents the viscosity of the solution.
The η ₀ and the η are measured in accordance with the Cosmetic Raw Material Standard General Test Method Viscosity Measurement Method No. 1.

As the dimethyl silicone of the component (F), a commercially available product can be used. As the commercially available product, for example, “SH200 Fluid 1,000,000CS manufactured by Toray Dow Corning Co., Ltd. (with a kinematic viscosity at 25 ° C. 10 million mm ² / s) ”,“ X-21-5615 (10 million mm ² / s / 4 million mm ² / s / 1000 mm ² / s = 15/15/70) ”manufactured by Shin-Etsu Chemical Co., Ltd., Or the dimethyl silicone emulsion etc. which added at least any one of dimethyl silicone and water to these, and emulsified with the nonionic surfactant etc. are mentioned. Examples of the dimethyl silicone emulsion include “BY22-083 (kinematic viscosity at 25 ° C .: 10 million mm ² / s)” manufactured by Toray Dow Corning Co., Ltd.

The content of the dimethyl silicone as the component (F) is based on the smoothness of the hair in a high temperature and high humidity environment and the lightness of the hair in a high temperature and high humidity environment with respect to the total amount of the hair conditioner composition. Therefore, 0.05 mass% to 5 mass% is preferable, and 0.1 mass% to 2 mass% is more preferable. When the content is less than 0.05% by mass, the smoothness of the hair in a high-temperature and high-humidity environment may be inferior. When the content exceeds 5% by mass, the hair in a high-temperature and high-humidity environment is inferior. Lightness may be adversely affected.

<Other ingredients>
In addition to the components (A) to (F), other components usually contained in the hair conditioner composition can be added to the hair conditioner composition of the present invention depending on the dosage form.
Examples of the other components include hydrocarbon oils, ester oils, waxes, higher alcohols other than the component (B), silicone oils other than the component (E) and the component (F), and components other than the component (A). Cationic surfactants, anionic surfactants, amphoteric surfactants, nonionic surfactants, semipolar surfactants, UV absorbers, water-soluble polymers, thickeners, other than the component (C) Aqueous components such as polyhydric alcohols, organic salts, sugars, lower alcohols, anti-dandruff agents other than the component (D), anti-inflammatory agents such as dipotassium glycyrrhizinate, parabens, preservatives such as caisson CG, ethylene glycol difatty acid Examples include pearlizing agents such as esters, emulsion agents, refreshing agents, cosmetic ingredients, powders, vitamins, pigments, and fragrances.
In addition, there is no restriction | limiting in particular as content of the said other component, According to the objective, it can select suitably in the range which does not inhibit the effect of this invention.

<Method for producing hair conditioner composition>
The hair conditioner composition of the present invention includes, for example, (A) a cationic surfactant, (B) a higher alcohol, (E) an amino-modified silicone, and (F) dimethyl silicone as necessary. The other water-insoluble components are dissolved by heating at 70 ° C. to 80 ° C. to prepare an oil phase.
Next, purified water previously heated to 70 ° C. is added to the oil phase and emulsified with a homomixer. This is cooled to 30 ° C. to 40 ° C., and the (C) polyhydric alcohol, (D) zinc pyrithione, and other water-soluble other components previously dissolved in purified water are added and stirred with a homomixer. It can be manufactured by mixing.

<PH>
The pH of the hair conditioner composition of the present invention is preferably adjusted to pH 2 to 8 by a pH adjuster, and more preferably 3 to 7. The pH can be measured at 25 ° C. using, for example, a pH meter (HM-30R, manufactured by Toa DKK Corporation).
Examples of the pH adjuster include inorganic acids such as hydrochloric acid, phosphoric acid, and boric acid, organic acids such as lactic acid, tartaric acid, citric acid, and glycolic acid, sodium hydroxide, potassium hydroxide, monoethanolamine, diethanolamine, and triethanolamine. Various amines such as ethanolamine, diisopropanolamine, triisopropanololamine, phosphates such as potassium hydrogen phosphate and sodium hydrogen phosphate, organic salts such as sodium citrate and sodium lactate, ammonium glycolate, etc. It is done.
There is no restriction | limiting in particular in content of the said pH adjuster, According to preset pH, it can select suitably.

<Viscosity>
The viscosity of the hair conditioner composition of the present invention is not particularly limited and may be appropriately selected depending on the intended purpose, but is preferably 1 Pa · s to 20 Pa · s at 25 ° C.
The viscosities are measured using, for example, a viscometer (BM viscometer, manufactured by TOKIMEC), The measurement can be performed under the condition of 25 ° C. after 30 seconds at 30 rpm with a 4-rotor.

<Container>
The hair conditioner composition can be used by filling a container. The container is not particularly limited and can be appropriately selected according to the purpose. For example, aluminum laminate tube, EVAL tube, aluminum tube, glass-deposited plastic tube tube, mechanical or differential pressure dispenser container, squeeze Examples include containers, laminate film containers, dropper containers, bottle containers, and pump-type containers.
Examples of the material of the laminate film include polyethylene, polyethylene terephthalate, polyester, biaxially stretched polypropylene, unstretched polypropylene, polyacrylonitrile, synthetic resin such as ethylene-vinyl acetate copolymer, paper, aluminum vapor-deposited plastic, and the like. . In addition, the laminate film generally has two or more layers, and generally 2 to 5 layers are preferred in consideration of strength, flexibility, weather resistance and the like.
The material of the bottle is appropriately selected from, for example, resins such as polyethylene, polypropylene, polyethylene terephthalate, polystyrene, polyvinyl chloride, ethylene-vinyl alcohol resin, acrylonitrile / styrene resin, ABS resin, polyamide, and glass. Further, the structure of the container is preferably a single layer or a layer structure of two or more layers.

<Application>
The hair conditioner composition of the present invention exhibits good storage stability, combines lightness of hair under a high temperature and high humidity environment and smoothness of the hair under a high temperature and high humidity environment. The anti-dandruff hair conditioner, the anti-dandruff hair conditioner, the anti-dandruff hair treatment and the like are preferable.

Hereinafter, the present invention will be specifically described with reference to examples of the present invention, but the present invention is not limited to these examples. In addition, content of each component shows a pure conversion value.

(Examples 1 to 51 and Comparative Examples 1 to 15)
According to the compositions shown in Tables 1 to 12 below, hair conditioner compositions for preventing dandruff were prepared by a conventional method. That is, first, (A) a cationic surfactant, (B) a higher alcohol, (E) an amino-modified silicone, and optionally (F) dimethyl silicone, and a water-insoluble common component are added at 70 ° C. to 80 ° C. The oily phase was prepared by heating and dissolving.
Next, purified water previously heated to 70 ° C. to 80 ° C. was added to the oil phase and emulsified with a homomixer. This is cooled to 30 ° C. to 40 ° C., and (C) polyhydric alcohol, (D) zinc pyrithione, and water-soluble common components previously dissolved in purified water are added to the emulsion and stirred with a homomixer. After mixing, the pH at 25 ° C. was adjusted to 3.5 with glycolic acid and ammonium glycolate, and anti-dandruff hair conditioner compositions of Examples 1 to 51 and Comparative Examples 1 to 15 were prepared. However, when the components (E) and (F) were emulsions, they were added after cooling to 30 ° C. to 40 ° C. instead of 70 ° C. to 80 ° C.
The viscosity at 25 ° C. (25 ° C.) in Examples 1 to 51 and Comparative Examples 1 to 15 was 2 Pa · s to 18 Pa · s.

Next, for the obtained hair conditioner compositions for preventing dandruff of Examples 1 to 51 and Comparative Examples 1 to 15, “lightness of hair”, high temperature and high temperature in a high temperature and high humidity environment as follows. “Hair smoothness”, “anti-dandruff effect”, “skin residue of pyrithione zinc”, and “storage stability” were evaluated in a humid environment. The results are shown in Tables 1 to 12.

<"Lightness of hair" and "Smoothness of hair">
A “female lightness” and “smoothness of hair” were evaluated by a panel of 20 women aged 25 to 40 as follows.
The hair of 20 female professional panels was thoroughly wetted with 40 ° C. warm water, 6 g of shampoo “Plant Monogatari” manufactured by Lion Co., Ltd. was applied, and after washing the shampoo was washed off with warm water of 40 ° C.
Thereafter, 6 g of each prepared hair conditioner composition for preventing dandruff was applied to the hair of the female panel, and then allowed to stand for 1 minute, and the hair conditioner composition was washed away with warm water of 40 ° C. After that, it was lightly towel-dried, entered a room of 70% RH at a temperature of 27 ° C., which reproduced the Southeast Asian climate, and naturally dried for 3 hours. The process from shampooing to natural drying was repeated once a day for 6 days. On the seventh day, after washing with the shampoo and the hair conditioner composition for preventing dandruff, the hair was lightly towel-dried, entered a room of 70% RH at a temperature of 27 ° C., and naturally dried for 3 hours. After natural drying, the “lightness of hair” and the “smoothness of hair” were evaluated in a room at 27 ° C. and 70% RH.
Here, the “lightness of the hair” means a state in which the hair after shampooing does not harden as a bundle and the hairs are separated one by one.
The “smoothness of hair” means a state in which a finger passes smoothly when the hair is rubbed with a finger with little friction on the hair surface after washing.

Evaluation was performed according to the following criteria from the number of respondents who answered that “lightness of hair” was good among the 20 female specialist panels.
[Evaluation criteria for “lightness of hair”]
◎: 16 or more of 20 people ◎ ~ ○: 13 to 15 of 20 people or less ○: 11 to 12 of 20 people △: 6 to 20 of 20 people or less ×: 5 of 20 people Less than

Evaluation was performed according to the following criteria from the number of respondents who answered that the “smoothness of hair” was good among the 20 female specialist panels.
[Evaluation criteria for "smoothness of hair"]
◎: 16 or more of 20 people ◎ ~ ○: 13 to 15 of 20 people or less ○: 11 to 12 of 20 people △: 6 to 20 of 20 people or less ×: 5 of 20 people Less than

<Anti-dandruff effect>
The “anti-dandruff effect” was evaluated by a panel of 30 women aged 40 to 60 as follows.
The hair of 30 female professional panels was thoroughly wetted with 40 ° C. warm water, 6 g of shampoo “Plant Monogatari” manufactured by Lion Co., Ltd. was applied, and after washing the shampoo was washed off with warm water of 40 ° C.
Thereafter, 6 g of each prepared anti-dandruff hair conditioner composition was applied, allowed to stand for 1 minute, and washed out with warm water at 40 ° C. Then, it was lightly towel-dried and allowed to dry naturally. The “dandruff prevention effect” after repeating the steps from washing the shampoo to natural drying once a day for 7 days was evaluated.
Based on the number of female respondents who answered that the “dandruff prevention effect” was good, the following criteria were used.
〔Evaluation criteria〕
◎: 25 or more in 30 people ◎ ~ ○: 19 to 24 in 30 people ○: 10 to 18 in 30 people △: 1 to 9 in 30 people ×: 0 in 30 people

<Skin residue of pyrithione zinc>
Evaluation of “skin persistence of pyrithione zinc” was performed by three test subjects of 25 to 35 years old as follows.
As shown in FIG. 1, three cup shake cups 1 each having a circular shape with a mouth of the cup having a diameter of 2 cm are provided on the inner side of the forearm of three men aged 25 to 35 (one for each arm). The cup shake cup 1 was attached with tape at intervals from the joint toward the fist direction. In addition, 2 in FIG. 1 represents the circular cup process part of diameter 2cm.
10 mL of 40 ° C. warm water was added to the cup to sufficiently wet the skin, and then the warm water in the cup was discarded. Next, 10 mL of shampoo ("Plant Story" manufactured by Lion Co., Ltd.) diluted 10-fold with warm water at 40 ° C was added to the cup and left for 2 minutes, and then the shampoo solution in the cup was discarded.
Further, 10 mL of 40 ° C. warm water was added to the cup and washed, then the warm water was discarded, and 10 mL of each anti-dandruff conditioner composition solution diluted 10 times with 40 ° C. warm water was added to the cup and left for 5 minutes. Later, the solution in the cup was discarded.
Thereafter, 10 mL of 40 ° C. warm water was added into the cup, and after washing, the warm water in the cup was discarded, the cup was removed from the inner side of the forearm, a tissue was placed on the cup processing unit 2 and lightly moistened. .
After drying, the circular cup processing part 2 having a diameter of 2 cm is divided into a right semicircle part 2b and a left semicircle part 2a by a straight line 3 drawn in the fist direction from the shoulder, and the right semicircle part 2b has an area of 1 cm ^2. A semicircular tape (D-Squame D100, manufactured by Cuderm) was applied (see FIG. 2), and tape stripping was performed to recover an initial amount of pyrithione zinc. In order to recover pyrithione zinc from the left semicircular portion 2a after standing at high temperature and high humidity, care should be taken not to stick the tape to the left semicircular portion 2a.
Then, it was made to rest for 30 minutes in a room with a temperature of 40 ° C. and 75% RH. After 30 minutes, it was dried out of a room of 75% RH at a temperature of 40 ° C.
A semicircular tape having an area of 1 cm ² was applied to the left semicircular portion 2a of the cup processing section, and tape stripping was performed again to recover the pyrithione zinc after 30 minutes. The above process was performed at a total of 18 locations for 3 locations on one arm, 6 locations on both arms, and 3 subjects.
The obtained semicircular tape is immersed in 5% by mass of nitric acid to extract pyrithione zinc, and the extract is subjected to an ICP emission spectrophotometer (Optima 5300 DV, manufactured by Perkin Elmer) to determine the amount of zinc contained in pyrithione zinc. The measured value was defined as the amount of zinc pyrithione recovered by the semicircular tape.
The skin persistence of pyrithione zinc was calculated from the following formula from the amount after 30 minutes in the room at 40 ° C. and 75% RH and the initial amount, and the average value of 18 measured values was obtained. Skin persistence of pyrithione zinc was evaluated.
[a formula]
Skin persistence (%) = [(Pyrithione zinc amount after standing for 30 minutes in a room of 75% RH at 40 ° C.) / (Initial pyrithione zinc amount)] × 100
〔Evaluation criteria〕
◎: Skin persistence is 90% or more ◎ to ○: Skin persistence is 75% or more and less than 90% ○: Skin persistence is 60% or more and less than 75% △: Skin persistence is 40% or more and less than 60% ×: Skin Persistence less than 40%

<Storage stability>
50 g of each of the prepared anti-dandruff hair conditioner compositions was filled into a 50 g polyethylene translucent upright container (mouth inner diameter 30 mm, manufactured by Teio Scientific Co., Ltd., CR-50). Thereafter, the lid of the upright container is closed, the upright container is stored at 50 ° C. for one month, and each dandruff-preventing hair conditioner composition in the upright container is visually observed after one month has passed. The “storage stability” was evaluated according to the following criteria.
〔Evaluation criteria〕
◎: Not separated ○: Not separated △: Slightly separated ×: Separated

* The value in () of the component (E) in Table 1 represents the solid content concentration, that is, the amount (mass%) of amino-modified silicone in the raw material (the same applies hereinafter).

* Values in the table 10 of the F component () is the kinematic viscosity 4 million ^mm 2 / s or more concentration, i.e., the amount of dimethyl silicone kinematic viscosity at 25 ° C. in the feed is 4 million ^mm 2 / s or more (Mass%) (hereinafter the same).

Details of each component in Examples and Comparative Examples are as described in Table 13 below.

The hair conditioner composition of the present invention exhibits good storage stability, combines the lightness of hair in a high temperature and high humidity environment and the smoothness of hair in a high temperature and high humidity environment. For example, it is suitable for use in washing-type anti-dandruff hair rinses, anti-dandruff hair conditioners, anti-dandruff hair treatments, and the like.

1 Cup for cup shake 2 Cup processing part 2a Left semicircle part 2b Right semicircle part 3 Straight line

Claims

(A) at least one cationic surfactant selected from a compound represented by the following general formula (1) and a compound represented by the following general formula (2):
<General formula (1)>

However, in the general formula (1), R 1 represents an alkyl group, and X − represents a halogen ion.
<General formula (2)>

In the general formula (2), R 2 represents any of a linear or branched alkyl group having 11 to 27 carbon atoms and an alkenyl group. R 3 represents an alkyl group having 1 to 4 carbon atoms. k represents an integer of 2 to 4.
(B) a straight chain higher alcohol having 16 to 22 carbon atoms,
(C) at least one polyhydric alcohol selected from glycerin, sorbitol and propylene glycol;
(D) zinc pyrithione, and
(E) amino-modified silicone,
Containing
The content of the component (C) is 10% by mass to 50% by mass,
A hair conditioner composition, wherein a mass ratio (D / C) of the content of the component (D) and the content of the component (C) is 0.006 to 0.4.
The hair conditioner composition according to claim 1, further comprising (F) dimethyl silicone having a kinematic viscosity at 25 ° C of 4 million mm 2 / s or more.
3. The hair conditioner composition according to claim 1, wherein the content of the component (D) is 0.25% by mass to 2% by mass.
The hair conditioner composition according to any one of claims 1 to 3, wherein the content of the component (A) is 1% by mass to 5% by mass.
The hair conditioner composition according to any one of claims 1 to 4, wherein the content of the component (B) is 1% by mass to 10% by mass.
The hair conditioner composition according to any one of claims 1 to 5, wherein the content of the component (E) is 0.1 mass% to 5 mass%.