JP7164298B2 - hair cosmetics - Google Patents

Description

The present invention relates to hair cosmetics, and more particularly to hair conditioning compositions.

In general, after shampooing, the hair becomes difficult to comb with fingers, so treatment with a hair conditioning composition such as a rinse is performed subsequently. Cationic surfactants are usually blended in hair conditioning compositions, because cationic surfactants are excellent in imparting softness and antistatic properties to hair.
Furthermore, the cationic surfactant contributes to the viscosity and elasticity of the hair cosmetic by forming a lamellar α-gel (rinse gel) together with the higher alcohol.

α-Gel is an aggregate consisting of a lamellar bilayer membrane formed by a linear higher alcohol and a hydrophilic surfactant in the presence of water. It is known that the higher alcohol and the surfactant are arranged regularly in the bilayer with a molecular ratio of 3:1 to form a hexagonal system (Shoji Fukushima, "Physical Chemistry of Cetyl Alcohol"). , Fragrance Journal, pp. 79-83, 1992).

The ability to form α-gel varies greatly depending on the type of surfactant. In general, surfactants with one long-chain alkyl group in one molecule (single-chain surfactant) have high α-gel-forming ability. . On the other hand, in a surfactant having a plurality of long-chain alkyl groups in one molecule (multi-chain type surfactant), the alkyl group becomes a steric hindrance, making it difficult to form an α-gel. Gels are known to have low stability over time.
Under these circumstances, a single-chain cationic surfactant is usually blended in hair cosmetics.

For example, Patent Document 1 discloses a hair conditioning composition containing specific amounts of a specific quaternary amine compound, a higher alcohol, a salicylic acid salt, an organic acid, and water. It has been shown to be excellent in goodness and hair feel (suppleness, smoothness, moistness). In addition, Patent Document 2 discloses a cationic surfactant containing a cationic surfactant, a higher alcohol, an aromatic acid, a highly polymerized amino-modified silicone, octyl palmitate or a hydrocarbon oil having a specific melting point, and water. A hair conditioning composition has been disclosed in which the molar ratio of higher alcohol to alcohol is in the range of 2.5 to 4.0, and has been shown to provide excellent hair softness during rinsing and after drying (Patent Document 2).
However, the effects of these conventional hair cosmetics still have room for improvement.

A hair cosmetic containing a double-chain cationic surfactant has also been produced. Patent Document 3 reports that an α-gel-like gel with high stability over time can be formed by blending a specific hydrophobically modified alkylcellulose with a dichain cationic surfactant and a higher alcohol. there is
However, the usability of hair cosmetics containing the gel has not been investigated.

JP 2010-241774 JP 2014-111574 JP 2007-112787

The present invention has been made in view of the above-mentioned problems of the prior art, and an object thereof is to provide a hair cosmetic composition which is more excellent in touch upon application and rinsing, and on hair after drying.

As a result of intensive studies to solve the above problems, the present inventors have found that a higher alcohol is blended with single-chain and double-chain cationic surfactants, and liquid moisturizing agents, liquid cosurfactants, and fragrances are added. By blending a group acid or a salt thereof, the hair cosmetic exhibits a rich feeling when applied, is excellent in the smoothness of the hair during rinsing, and is excellent in the effect of imparting suppleness, smoothness and moistness to the hair after drying. The present inventors have found that the material can be obtained, and have completed the present invention.

（式中、Ｒ^ａＣＯは、それぞれが同一であっても異なってもよく、炭素原子数が１０～２２で、二重結合を０～３個有する脂肪族アシル基を表し、ｐは１～３の整数を表す。Ｘは、ハロゲン原子、メトサルフェートもしくはメトホスフェートを表す。）

（式中、Ｒ^１及びＲ^２は、それぞれ独立に炭素原子数が１４～２２のアルキル基又はヒドロキシル基を表し、Ｒ^３及びＲ^４は、それぞれ独立に炭素原子数が１～３のアルキル基、ヒドロキシル基又はベンジル基を表し、Ｘは、ハロゲン原子又は炭素数１～２のアルキル硫酸基を表す。）。
［５］ 成分（ｅ）が、下記一般式（ＩＩＩ）及び（ＩＶ）で表される化合物からなる群から選ばれる１以上のコサーファクタントであることを特徴とする、前記［１］－［４］のいずれかに記載の毛髪化粧料：

（式中、Ｒ_１は炭素数８～１２のアルキル基、Ｒ_２及びＲ_３はそれぞれ独立して水素原子またはメチル基、Ｘは水素原子または脂肪酸残基、ｎは１～３の整数を示す。）

（式中、ｎは１～３の整数を示す。）。 That is, the present invention includes the following.
[1] (a) single-chain cationic surfactant (b) higher alcohol (c) liquid moisturizer (d) double-chain cationic surfactant (e) liquid cosurfactant (f) aromatic acid or its A hair cosmetic comprising salt.
[2] The hair according to [1] above, wherein the molar ratio [(b)/(a)] of component (b) to component (a) is in the range of 2.5 to 3.5. cosmetics.
[3] The hair cosmetic composition according to any one of [1] or [2] above, wherein the sum of components (a) and (b) is 6 to 10% by mass.
[4] Component (d) is one or more double-chain cationic surfactants selected from the group consisting of compounds represented by the following general formulas (I) and (II): The hair cosmetic according to any one of Items 1-3:

(wherein R ^a CO may be the same or different and represents an aliphatic acyl group having 10 to 22 carbon atoms and 0 to 3 double bonds; p is 1 to represents an integer of 3. X represents a halogen atom, methosulfate or methophosphate.)

(In the formula, R ¹ and R ² each independently represent an alkyl group having 14 to 22 carbon atoms or a hydroxyl group, and R ³ and R ⁴ each independently represent an alkyl group having 1 to 3 carbon atoms. , represents a hydroxyl group or a benzyl group, and X represents a halogen atom or an alkyl sulfate group having 1 to 2 carbon atoms.).
[5] Component (e) is one or more cosurfactants selected from the group consisting of compounds represented by the following general formulas (III) and (IV), [1] to [4] ] The hair cosmetic according to any one of:

(wherein R ₁ is an alkyl group having 8 to 12 carbon atoms, R ₂ and R ₃ are each independently a hydrogen atom or a methyl group, X is a hydrogen atom or a fatty acid residue, n is an integer of 1 to 3 .)

(In the formula, n represents an integer of 1 to 3).

According to the present invention, there is provided a hair cosmetic that gives a rich feeling when applied, is excellent in hair smoothness in rinsing, and is excellent in effects of imparting suppleness, slippery feeling and moist feeling to hair after drying.

Preferred embodiments of the present invention are described below.
(a) Single-chain cationic surfactant The single-chain cationic surfactant that can be used in the present invention is not particularly limited as long as it is commonly used in cosmetics. Alkyltrimethylammonium salts (e.g., behentrimonium ammonium chloride, stearyltrimethylammonium chloride, lauryltrimethylammonium chloride, etc.); alkylpyridinium salts (e.g., cetylpyridinium chloride, etc.); poly(N,N'-dimethyl-3 chloride) Alkylquaternary ammonium salts; Alkyldimethylbenzylammonium salts; Alkylisoquinolinium salts; POE-Alkylamines; Alkylamine salts; Polyamine fatty acid derivatives; ; benzethonium chloride and the like.

The long-chain alkyl group of component (a) according to the present invention preferably has 16 or more carbon atoms, more preferably 18 to 22 carbon atoms. The alkyl group may be linear or branched, preferably linear.

Examples of (a) single-chain cationic surfactants particularly suitable for the present invention include alkyltrimethylammonium salts, particularly preferably behentrimonium ammonium chloride and stearyltrimethylammonium chloride.

The blending amount of component (a) in the hair cosmetic composition of the present invention is 1.5-5.0% by mass, more preferably 1.75-4.5% by mass. If the content is less than 1.5% by mass, the rinse gel may become loose, and the feeling of application and stability may be impaired. Sometimes.

(b) Higher alcohol The higher alcohol that can be used in the present invention is not particularly limited as long as it is commonly used in cosmetics. cetanol), stearyl alcohol, behenyl alcohol, myristyl alcohol, oleyl alcohol, cetostearyl alcohol, hydrogenated rapeseed oil alcohol, etc.); decyltetradecinol, lanolin alcohol, cholesterol, phytosterol, hexyldodecanol, isostearyl alcohol, octyldodecanol, etc.).
Among them, straight chain alcohols having 16 or more carbon atoms are preferred, and straight chain alcohols having 16 to 22 carbon atoms such as cetanol, stearyl alcohol and behenyl alcohol are particularly preferably used.

The hair cosmetic composition according to the present invention can contain (b) a higher alcohol alone or in combination of two or more.

The amount of component (b) in the hair cosmetic composition of the present invention is in the range of 3 to 20% by mass based on the composition, although it depends on the amount of cationic surfactant (a). more preferably 3-8.5% by mass. If the blending amount of component (b) is less than 3% by mass, the rinse gel may become loose, and the feeling of application and stability may be impaired. may be felt.

In the present invention, the molar ratio of (b) higher alcohol to (a) cationic surfactant, that is, the value of "(b)/(a)" is 2.5 to 3.5, preferably 2.8. ~3.5, more preferably from 2.9 to 3.1. When the (b)/(a) value is less than 2.5, the rinse gel becomes loose, and the feeling of application and stability may be impaired. because it may be damaged.
In the present invention, the sum of components (a) and (b) is preferably 6 to 10% by mass, more preferably 7 to 10% by mass.

(c) Liquid moisturizing agent The liquid moisturizing agent that can be used in the present invention is commonly used in cosmetics and is liquid at normal temperature and normal pressure (1 atmospheric pressure, 25°C). Examples thereof include polyethylene glycol, propylene glycol, dipropylene glycol, isoprene glycol glycerin, 1,3-butylene glycol, sodium lactate, short-chain soluble collagen and the like.
Among these, dipropylene glycol, glycerin, and isoprene glycol can be particularly preferably used.

The hair cosmetic composition according to the present invention can contain (c) a liquid moisturizing agent alone or in combination of two or more.

The blending amount of component (c) in the hair cosmetic composition of the present invention is 10-40% by mass, preferably 15-30% by mass. If it is less than 10% by mass, the moist feeling and suppleness after drying may be impaired, and if it exceeds 40% by mass, the smoothness during rinsing may be impaired.

(d) Double-chain Cationic Surfactant The (d) double-chain cationic surfactant that can be used in the present invention may be one that is used in cosmetics. and one or more compounds selected from the group consisting of compounds represented by (II).

In formula (I), R ^a CO represents an aliphatic acyl group having 10 to 22 carbon atoms, preferably 12 to 16 carbon atoms, most preferably 12 carbon atoms and 0 to 3 double bonds. p represents a number from 0 to 3; However, when p is 0, the group -(CH2)p-OH becomes a methyl group. X represents a halogen compound, methosulfate or methphosphate.

Examples of the compound of general formula (I) that can be used in the present invention include dicocoylethylhydroxyethylmonium methosulfate, dipalmitoylethylhydroxyethylmonium methosulfate, distearylethylhydroxyethylmonium chloride and the like, but are preferred. is the halide or methosulfate of a coconut oil fatty acid ester quat. When the carbon chain length of the aliphatic acyl group represented by R ^a CO is long, the stability of the composition at low temperatures is poor.

In the formula, R ¹ and R ² each independently represent an alkyl group having 14 to 22 carbon atoms or a hydroxyl group. R ³ and R ⁴ each independently represent an alkyl group having 1 to 3 carbon atoms, a hydroxyl group or a benzyl group, preferably an alkyl group having 1 to 3 carbon atoms, more preferably a methyl group. X represents a halogen atom or an alkyl sulfate group having 1 to 2 carbon atoms, preferably a halogen atom, more preferably a chlorine atom.
Examples of the compound of general formula (II) that can be used in the present invention include distearyldimonium chloride and the like.

The blending amount of component (d) in the hair cosmetic composition of the present invention is 0.1-1% by mass, preferably 0.1-0.5% by mass. If the content is less than 0.1% by mass, the smooth feeling after drying may be impaired.

The hair cosmetic composition according to the present invention can contain (d) a two-chain cationic surfactant singly or in combination of two or more.

(e) Liquid cosurfactant The liquid cosurfactant that can be used in the present invention is commonly used in cosmetics and is a cosurfactant that is liquid at normal temperature and normal pressure (1 atmospheric pressure, 25°C). For example, one or more nonionic surfactants selected from the group consisting of compounds represented by the following general formulas (III) and (IV) can be used.

In formula (III) above, R ₁ is an alkyl group having 8 to 12 carbon atoms, preferably 10 to 11 carbon atoms, most preferably 11 carbon atoms. It may be straight chain or branched chain, preferably straight chain.
_R2 and R3 _each independently represent a hydrogen atom or a methyl group.
X is a hydrogen atom or a fatty acid residue. The fatty acid residue preferably has 10 to 11 carbon atoms, and may be linear or branched. X is most preferably a hydrogen atom.
n represents an integer of 1-3.

In the formula (IV), n represents an integer of 1-3.

In the present invention, examples of compounds represented by general formula (III) include propylene glycol laurate (PG laurate), polyethylene glycol laurate (eg, PEG-2 laurate), and general formula (IV). Examples of such compounds include oleth-2 and the like.
Among these, propylene glycol laurate, PEG-2 laurate, diethylene glycol laurate, and oleth-2 are preferred, and diethylene glycol laurate is particularly preferred.

Generally, rinse gels are difficult to form under conditions where the (b)/(a) value is low (specifically, 3.0 or less), but in the present invention, due to the action of component (e), (b)/(a) (a) It is considered that the formation of rinse gel is promoted even under conditions where the value is low.

The blending amount of component (e) in the hair cosmetic composition of the present invention is 0.1-1% by mass, preferably 0.2-0.8% by mass. If it is less than 0.1% by mass, the smoothness during rinsing and the smoothness after drying may be impaired. may be damaged.

(f) Aromatic acid or salt thereof The aromatic acid that can be used in the present invention is not particularly limited as long as it is commonly used in hair cosmetics. Examples include salicylic acid, benzoic acid, and phthalic acid. , aromatic carboxylic acids such as terephthalic acid; naphthalenesulfonic acids such as 1-naphthalenesulfonic acid, 2-naphthalenesulfonic acid, 1,5-naphthalenedisulfonic acid, 2,6-naphthalenedisulfonic acid, and 2,7-naphthalenedisulfonic acid benzenesulfonic acids such as benzenesulfonic acid, toluenesulfonic acid and xylenesulfonic acid;

Moreover, these aromatic acids may form salts, and examples of the salts include alkali metal salts such as sodium and potassium, alkaline earth metal salts such as calcium and magnesium, and the like.

Among these, aromatic carboxylic acids are preferred, salicylic acid and its salts (particularly preferably sodium salts), benzoic acid and its salts (particularly preferably sodium salts), and 3-methylsalicylic acid, 4-methylsalicylic acid, 5 - Salicylic acid derivatives such as methylsalicylic acid and salts thereof can be particularly preferably used.

The hair cosmetic composition according to the present invention can contain component (d) alone or in combination of two or more.

In the hair cosmetic composition of the present invention, component (d) can be blended within the range of 0.1-1% by mass, more preferably 0.1-0.5% by mass, and still more preferably 0.2- 0.4. If the blending amount of the component (d) is less than 0.1% by mass, the slippery feeling after drying may be impaired.

The hair cosmetic composition according to the present invention contains water as a site for forming a rinse gel. Ion-exchanged water, purified water, tap water, etc. can be used in the present invention.

In the hair cosmetic composition according to the present invention, in addition to the above components, various components that are commonly used in cosmetics, pharmaceuticals, etc. can be blended within a range that does not impair the effects of the present invention. Examples of such ingredients include general oils, powder ingredients, amphoteric surfactants, natural polymers, synthetic polymers, thickeners, ultraviolet absorbers, sequestering agents, pH adjusters, skin nutrients, Examples include vitamins, antioxidants, antioxidant aids, fragrances, and the like.

The hair cosmetic composition according to the present invention can be produced by a generally used method, and is not particularly limited. For example, it can be obtained by a conventional method such as stirring and mixing while sequentially adding ingredients to water heated to about 60 to 80° C. and cooling to room temperature.

Hair cosmetics according to the present invention can be suitably used as hair conditioning compositions such as hair rinses, hair conditioners, hair treatments, and hair packs. These hair conditioning compositions are preferably of the rinse-off type.

EXAMPLES The present invention will be described in more detail below with specific examples, but the present invention is not limited to the following examples. In addition, unless otherwise specified, the compounding amounts in the following examples and the like are represented by mass%.

Hair conditioners having the formulations shown in Tables 1 and 2 were produced according to standard methods, and a practical use test was conducted by a panel of five experts.
The items in the table were evaluated according to the following evaluation criteria. Results are shown in Tables 1 and 2.

(1) Rich feeling when applied ⊚: 4 or more and 5 or less panelists answered that they had a rich feeling.
○: 3 panelists answered that there was a rich feeling.
Δ: Two panelists answered that the product had a rich feeling.
x: Less than 1 panelist answered that there was a rich feeling.
In the present invention, it was judged to be excellent in the case of ⊚ or ◯.

(2) Smoothness of hair after rinsing ⊚: 4 or more and 5 or less panelists answered that the hair was smooth.
○: 3 panelists answered that it was smooth.
Δ: Two panelists answered that it was smooth.
x: 1 or less panelists answered that it was smooth.
In the present invention, it was judged to be excellent in the case of ⊚ or ◯.

(3) Suppleness of hair after drying ⊚: 4 or more and 5 or less panelists answered that the hair was supple.
○: 3 panelists answered that it was supple.
△: Two panelists answered that it was supple.
x: One or less panelists answered that it was supple.
In the present invention, it was judged to be excellent in the case of ⊚ or ◯.

(4) Smooth feeling of hair after drying ⊚: 4 or more and 5 or less panelists answered that hair was smooth.
◯: Three panelists answered that the skin was smooth.
Δ: Two panelists answered that the skin was smooth.
x: One panel or less answered that the skin was smooth.
In the present invention, it was judged to be excellent in the case of ⊚ or ◯.

(5) Moist feeling of hair after drying ⊚: 4 or more and 5 or less panelists answered that hair was moist.
○: 3 panelists answered that the skin was moist.
△: Two panelists answered that it was moist.
x: One panel or less answered that the skin was moist.
In the present invention, it was judged to be excellent in the case of ⊚ or ◯.

As shown in Tables 1 and 2, (a) single-chain cationic surfactant, (b) higher alcohol, (c) liquid moisturizer, (d) double-chain cationic surfactant, (e) A hair conditioning composition containing a liquid cosurfactant and (f) an aromatic acid or a salt thereof exhibits a rich feeling when applied, is excellent in the smoothness of the hair when rinsed, and gives suppleness, smoothness, and smoothness to the hair after drying. And it was excellent in the effect of imparting a moist feeling. In the test examples, among the five evaluations, the test examples with three or more evaluations marked with ⊙ and ◯ are superior.

Claims (1)

(a) 1.5 to 5.0% by mass of single-chain cationic surfactant
(b) 3 to 20% by mass of linear alcohol having 16 to 22 carbon atoms
(c) 10 to 40% by mass of liquid moisturizing agent
(d) 0.1 to 1% by mass of one or more double-chain cationic surfactants selected from the group consisting of general formula (I)

(wherein R ^a CO may be the same or different and represents an aliphatic acyl group having 10 to 22 carbon atoms and 0 to 3 double bonds; p is 1 to represents an integer of 3. X represents a halogen atom, methosulfate or methophosphate.)
(e) one or more liquid cosurfactants selected from the group consisting of general formula (III) 0. 1 to 1% by mass

(f) contains an aromatic acid or a salt thereof, the sum of components (a) and (b) is 6 to 10% by mass, and the molar ratio of component (b) to component (a) [(b)/(a )] is in the range of 2.5 to 3.5 .