JP2000038322A - Agent for cuticle care - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an agent for cuticle care capable of suppressing removal of cuticle and swelling by combining a cationic surfactant and an organic acid in a specific condition. SOLUTION: This agent includes the combination of (A) the cationic surfactant and (B) the organic acid or its salt and the aqueous solution including 1 mM of each component exhibits surface tension <=40 mN/m at 27±0.5 deg.C. Preferably, the component (A) is a tertiary ammonium chloride (e.g.; distearyldimethylammoniumchloride or the like) expressed by the formula (at least one of R1 to R4 is an 8 to 35C alkoxy, alkenyloxy, alkanoylamine or the like and the rest are each benzyl, an 1 to 5C alkyl or the like; Z is a halogen ion or an organic anion), the component (B) is a carboxylic acid or its salt, sulfonic acid or its salt and this agent includes (C) an oily medicine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a cuticle care agent for suppressing peeling and swelling of a cuticle.

[0002]

2. Description of the Related Art Cationic surfactants are indispensable components for improving the feel of hair, but on the other hand, they cause a cuticle peeling phenomenon (hereinafter referred to as "lift-up") and swelling, resulting in a hair surface. In some cases, causing a decrease in gloss and the like.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a cuticle care agent which suppresses the lift-up and swelling of a cuticle.

[0004]

That is, the present invention provides:
Component (A) is a combination of (A) a cationic surfactant and (B) an organic acid or a salt thereof in which the surface tension at 27 ± 0.5 ° C. of an aqueous solution containing 1 mM is 40 mN / m or less. And (B) a cuticle care agent.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The cationic surfactant of the component (A) used in the present invention is not particularly limited as long as it is used in ordinary hair cosmetics. For example, the following general formula (1)

[0006]

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(Wherein at least one of R ¹ , R ² , R ³ and R ⁴ is substituted with an alkoxy group, alkenyloxy group, alkanoylamino group or alkenoylamino group having a total of 8 to 35 carbon atoms) Represents an alkyl group or an alkenyl group or an aliphatic acyloxy (polyethoxy) ethyl group which may be a benzyl group, an alkyl group having 1 to 5 carbon atoms or a hydroxyalkyl group, or a polyoxyethylene group having a total added mole number of 10 or less. , And Z ^- represents a halogen ion or an organic anion).

Among these cationic surfactants, preferred are, for example, distearyldimethylammonium chloride, stearyltrimethylammonium chloride, capryltrimethylammonium chloride, myristyltrimethylammonium chloride,
Cetyltrimethylammonium chloride, behenyltrimethylammonium chloride, lauryltrimethylammonium chloride, N-stearyl-N, N, N
-Tri (polyoxyethylene) ammonium chloride (total of 3 mol addition), cetylbenzyldimethylammonium chloride, cetyltriethylammonium bromide, distearyldimethylammonium chloride, etc., as well as the following general formulas (2) to (4) Branched quaternary ammonium salt, quaternary ammonium represented by the general formula (5)
Secondary ammonium salts.

[0009]

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[0010]

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[0011]

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(Wherein, R ¹³ and R ¹⁴ represent an alkyl or alkenyl group having 8 to 22 carbon atoms which may be substituted with a hydroxyl group, and R ¹⁵ and R ¹⁶ represent an alkyl group having 1 to 3 carbon atoms) or _{- (CH 2 CH 2 O)} g H (g is a number of 1 to 6) indicates, e and f represents a number of 0 to 5, Z ^- represents a halogen ion or an organic anion)

[0013] Note that these Z is a counterion of the quaternary ammonium salt ^- Specific examples of chlorine, iodine, halogen ion such as bromine; methosulfate, ethosulfate, methemoglobin phosphate, organic such as ethoxy phosphate Anions. Further, an anion of the organic acid of the component (B) may be used.

Among these, the branched quaternary ammonium salt represented by the general formula (2) is, for example, usually a compound having 8 carbon atoms.
And oxo alcohols having an alkyl group derived from oxo alcohols, such as dialkyldimethylammonium salts, dialkylmethylhydroxyethylammonium salts, and dialkylmethylbenzylammonium salts. . In the present invention, those having a branching ratio of R ⁵ of the formula (2) of usually 10 to 100% are used.
It is preferably from 0 to 50%. Although those total number of carbon atoms of R ⁵ is 8 to 16 are used, preferably those having a certain distribution, particularly those having a distribution described below preferred.

C _{8 to} C ₁₁ : 5% or less C ₁₂ : 10 to 35% C ₁₃ : 15 to 40% C ₁₄ : 20 to 45% C ₁₅ : 5 to 30% C ₁₆ : 5% or less

A specific example of such a branched quaternary ammonium salt is dialkyldimethylammonium chloride having an alkyl group having 8 to 16 carbon atoms and a branching ratio of 10 to 50%.

Further, the fourth branch represented by the general formula (3)
The quaternary ammonium salt is usually a Guerbet alcohol having 8 to 28 carbon atoms.

[0018]

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Among the branched quaternary ammonium salts,
Preferred examples include an alkyltrimethylammonium salt having an alkyl group derived from Guerbet alcohol, an alkyldimethylbenzylammonium salt, a dialkyldimethylammonium salt, a dialkylmethylhydroxyethylammonium salt, and a dialkylmethylbenzylammonium salt. Further, among these, particularly preferred are, for example, 2-decyltetradecyltrimethylammonium chloride, 2-dodecylhexadecyltrimethylammonium chloride,
Examples thereof include di-2-hexyldecyldimethylammonium chloride and di-2-octyldodecyldimethylammonium chloride.

The quaternary ammonium salts represented by the general formula (5) include, for example, WO93 / 10748, WO9
2/06899, WO94 / 16677 and the like. In particular, in the formula (5), R ¹³ and R
¹⁴ is an oleyl group or an alkyl group having 12 to 18 carbon atoms,
Preferably, R ¹⁵ is a methyl group, R ¹⁶ is —CH ₂ CH ₂ OH, and e and f are 0.

The cationic surfactant of the component (A) comprises 1
Species or more can be used.
%, Preferably 0.1 to 10% by weight, more preferably 0.5 to 5% by weight, because a sufficient effect can be obtained and the feeling in use is good.

The organic acid of the component (B) used in the present invention includes, for example, carboxylic acid, sulfonic acid, phosphoric acid and the like. Specifically, for example, a carboxylic acid such as salicylic acid;
Examples thereof include sulfonic acids such as 1-naphthalenesulfonic acid, 2-naphthalenesulfonic acid, oxybenzonesulfonic acid, and guaiazulenesulfonic acid.

Examples of the salt of an organic acid include alkali metal salts such as sodium and potassium, and alkaline earth metal salts such as calcium and magnesium. As the component (B), sodium 1-naphthalenesulfonate, sodium 2-naphthalenesulfonate, sodium guaiazulenesulfonate, oxybenzonesulfonic acid and salicylic acid are particularly preferred, and sodium 2-naphthalenesulfonate is most preferred.

One or more organic acids or salts thereof of the component (B) can be used, and the total composition is 0.01 to 10% by weight, preferably 0.05 to 5% by weight, more preferably 0.1 to 3% by weight. It is preferable to mix by weight% since a sufficient effect can be obtained. Component (B) may be incorporated into the composition as an acid or salt, or may be included in the composition as a counter ion of a cationic surfactant.

In the present invention, the components (A) and (B)
Has a surface tension at 27 ± 0.5 ° C. of 40 mN / m or less, preferably 39 to 20 mN /
m, particularly preferably 38 to 25 mN / m, component (A)
And (B). This surface tension is 40mN
With a combination exceeding / m, the lift-up and swelling of the cuticle cannot be suppressed. In the present invention, the surface tension is a value measured using a surface tensiometer utilizing a ring method (a method described in Chemical Handbook (Revised 4th Edition) Basic Edition II-73).

The cuticle care agent of the present invention can further contain an oil agent as component (C), which is preferable because it can impart a good feel to hair. The oil agent is not particularly limited as long as it is used for ordinary hair cosmetics, and is, for example, a saturated or unsaturated alcohol having 12 to 30 carbon atoms; an ether of the alcohol and a polyhydric alcohol; Esters of fatty acids with fatty acids having 1 to 11 carbon atoms; saturated or unsaturated fatty acids having 12 to 30 carbon atoms; esters of the fatty acids with monohydric or polyhydric alcohols; amides of the fatty acids with amines; Sterols; squalene; phospholipids; glycolipids; animal and vegetable fats and oils; hydrocarbons; mono-, di- or triglycerides composed of saturated or unsaturated fatty acids having 12 to 30 carbon atoms.

Of these, aliphatic alcohols represented by the following general formula (6), fatty acids represented by the following general formula (7), and glycerides represented by the following general formula (8) are particularly preferable.

[0028]

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Where R¹⁷Is an alk having 12 to 22 carbon atoms
R or alkenyl group;¹⁸Has 11 to 21 carbon atoms
Represents an alkyl group or an alkenyl group. In the formula (8), R
¹⁹, R ²⁰And R^{twenty one}At least one of them has 11 to 11 carbon atoms.
Carbonyl having 21 alkyl or alkenyl groups
Represents a group, and the remainder represents a hydrogen atom. )

One or more oil agents of component (C) can be used, and 0.01 to 30% by weight, especially 0.1 to 30% by weight in the whole composition.
It is preferred that the compounding amount be from 0.05 to 20% by weight, and more preferably from 0.1 to 10% by weight, since a sufficient effect can be obtained and the feeling in use is good.

The cuticle care agent of the present invention further includes components used in ordinary cosmetics, for example, other surfactants such as anionic surfactants, amphoteric surfactants and nonionic surfactants, and anions. Polymers, nonionic polymers, cationic polymers, alcohols, powders,
Functional beads / capsules, metal chelators, antioxidants, viscosity modifiers, preservatives, plant and animal extracts, anti-inflammatory agents, bactericides, anti-dandruff agents, antioxidants, pearlizing agents, ultraviolet absorbers, pH adjustment Agents, dyes, fragrances, and the like can be appropriately added as necessary within a range that does not impair the effects of the present invention.

The cuticle care agent of the present invention can be produced by mixing the respective components, and the form is not particularly limited. For example, it can be in the form of a liquid, a gel, a cream, an aerosol, or the like.

Further, the cuticle care agent of the present invention comprises:
It is preferably pH 2-10, especially pH 3-8. In order to obtain a preferable pH, the pH may be adjusted by adding an acid or an alkali.

[0034]

The cuticle care agent of the present invention can suppress the lift-up and swelling of the cuticle due to the cationic surfactant.

[0035]

Example 1 An aqueous solution containing 1 mM each of a cationic surfactant and an organic acid or a salt thereof shown in Tables 1 and 2 was prepared, and a surface tensiometer (Model: KRUSS, manufactured by KRUSS: K-
Using 14), the surface tension was measured at 27 ± 0.5 ° C.
The results are shown in Tables 1 and 2.

[0036]

[Table 1]

[0037]

[Table 2]

Example 2 The components shown in Tables 3 and 4 were mixed to produce a cuticle care agent, and the effect of suppressing the lift-up when using these was evaluated. The results are shown in Tables 3 and 4.

(Evaluation method) (1) Lift-up inhibitory effect: 1 g of each cuticle care agent was applied to 10 g of untreated hair of a Japanese woman, rinsed and dried, and then subjected to laser microscope VF-7510 (manufactured by Keyence Corporation). The hair was observed at 20 ° C. and 65% RH. The surface shape and roughness of the hair were measured, and among the 100 points of the irregularities randomly extracted (the irregularities represent the steps of one cuticle), the points where the steps of the irregularities were 0.7 μm or more were counted. The lift-up rate was calculated in accordance with the calculation formula shown in (1), and was represented by the following criteria.

[0040]

(Equation 1)

A: Lift-up rate: 0 to 1%. ；: Lift-up rate 2 to 5%. Δ: Lift-up rate 6 to 10%. ×: Lift-up rate 11% or more.

[0042]

[Table 3]

[0043]

[Table 4]

Example 3 A cuticle care treatment having the composition shown in Table 5 was produced.

[0045]

[Table 5]

Example 4 A cuticle care shampoo having the composition shown in Table 6 was produced.

[0047]

[Table 6]

Example 5 A cuticle care gel having the composition shown in Table 7 was produced.

[0049]

[Table 7]

Example 6 A cuticle care cream having the composition shown in Table 8 was produced.

[0051]

[Table 8]

The cuticle care agents obtained in Examples 3 to 6 were all excellent in the effects of suppressing the lift-up and swelling of the cuticle.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Yoshihisa Kitano 2-1-3 Bunka, Sumida-ku, Tokyo Inside Kao Corporation Research Laboratory (72) Yuji Ishino 2-1-3 Bunka, Sumida-ku, Tokyo Kao Nagoya Sato, Inventor (72) Inventor Naoki 2-1-3, Bunka, Sumida-ku, Tokyo F-term (reference) 4K083 AA122 AB282 AC012 AC071 AC072 AC122 AC152 AC172 AC231 AC241 AC242 AC302 AC352 AC421 AC422 AC432 AC472 AC482 AC642 AC691 AC692 AC712 AC791 AC792 AC852 AD132 AD152 AD282 BB06 BB11 CC33 CC38 DD31 DD41 EE28 EE29

Claims (5)

[Claims] 1. A cationic surfactant (A) and (B)
Of an aqueous solution containing 1 mM each of an organic acid or a salt thereof.
A cuticle care agent containing the components (A) and (B) in a combination having a surface tension at 7 ± 0.5 ° C. of 40 mN / m or less. 2. The method according to claim 1, wherein the cationic surfactant of the component (A) is
General formula (1) (In the formula, at least one of R ¹ , R ² , R ³ and R ⁴ may be substituted with an alkoxy group, alkenyloxy group, alkanoylamino group or alkenoylamino group having a total of 8 to 35 carbon atoms. A good alkyl group or an alkenyl group or an aliphatic acyloxy (polyethoxy) ethyl group, and the remainder is a benzyl group, an alkyl group or a hydroxyalkyl group having 1 to 5 carbon atoms, or a polyoxyethylene group having a total added mole number of 10 or less, The cuticle care agent according to claim 1, wherein Z ^- is a quaternary ammonium salt represented by the following formula: 3. The cuticle care agent according to claim 1, wherein the organic acid or a salt thereof of the component (B) is a carboxylic acid or a salt thereof, or a sulfonic acid or a salt thereof. 4. The composition according to claim 1, further comprising (C) an oil agent.
3. The cuticle care agent according to any one of 3. 5. The oil agent of the component (C) is represented by the general formula (6).
Aliphatic alcohol represented by the general formula (7)
Fatty acids and glycerides represented by general formula (8)(Where R¹⁷Is an alkyl group having 12 to 22 carbon atoms or alk
Represents a phenyl group;¹⁸Is an alkyl group having 11 to 21 carbon atoms
Or an alkenyl group. In the formula (8), R¹⁹, R ²⁰as well as
R^{twenty one}At least one of which is an alkyl having 11 to 21 carbon atoms;
A carbonyl group having a carbonyl group or an alkenyl group;
The remainder indicates a hydrogen atom. )
4. The cuticle care agent according to 4.