JPH1171242A - Agent for treating hair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a treating agent capable of being nonviscously coated, imparting a moist and flexible touch to hair, and inhibiting the peeling and fuzzing of cuticles by compounding the fine emulsion of a waxy substance, a specific cationic surfactant and a silicone oil. SOLUTION: This treating agent comprises (A) 0.01-20 wt.% of the fine emulsion of a waxy substance (a paraffin wax or the like), (B) 0.01-3 wt.% of a cationic surfactant of formula I [R1 is a 8-22C (hydroxy)alkyl; R2 and R3 are each a 1-3C (hydroxy)alkyl or benzyl; R4 is the same as R1 or R2 ; X1 is a halogen, a l-3C alkyl group-containing monoalkyl sulfate group] or formula II [two or three of R5 -R7 are each a 8-20C alkyl, and the other is methyl or (hydroxy) ethyl; (n) is 3-10; X2 is a halogen, methyl sulfate group, ethyl sulfate group] and (C) 0.1-20 wt.% of a silicone oil (polyoxyethylene.methylpolysiloxane copolymer or the like).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention suppresses fluffing of cuticles that cause damage to hair that has been easily damaged by chemical treatments such as perm, bleach, and hair coloring, and improves the feel to the touch. Water-based hair treatment composition.

[0002]

BACKGROUND OF THE INVENTION Hair is heavily damaged by everyday hair care and makeup procedures. In particular, in hair washing, the surface active agent such as a shampoo dissolves even the sebum and hair constituent proteins of the hair, resulting in a rough or rugged feel, and furthermore, an extremely glossy loss.・
It is known to visually perceive the damage. On the other hand, in recent years, cold perm,
The frequency of use of hair coloring, hair bleaching and the like has increased, and chemical treatment with drugs has also promoted the elution of structural proteins of hair and structural changes, which has spurred damage. Hand dryers used as means for drying wet hair are also a major cause of hair damage, resulting in structural changes due to heat, resulting in reduced strength and reduced water retention. In addition, physical irritation caused by brushing also promotes cuticle fluffing / separation, tearing and breaking of hair on the hair surface.

[0003] Conventionally, as means for protecting hair from such damages, for example, brushing or the like is performed by using a cationic component represented by a quaternary ammonium salt and an oil in combination to smooth the surface of the hair. In general, a method for reducing the damage caused by the damage is used. In this case, as a method for imparting a stronger coating effect to the hair, a method using a highly polymerized methylsiloxane or a method using a solid wax-like substance (Japanese Patent Application Laid-Open Nos.
JP-A-230616) has been proposed.

[0004] However, these methods are insufficient in the effect of suppressing damage to more damaged hair, and have a problem in touch such that the coated hair feels sticky or rough.

The present invention overcomes the drawbacks of the conventional hair treating agent, and can be applied well without causing stickiness or stiffness, and at the same time, the cuticle which is a cause of hair damage. An object of the present invention is to provide a hair treatment agent capable of suppressing moisture, giving a moist and supple feel.

[0006]

Means for Solving the Problems and Embodiments of the Invention The present inventors have conducted various studies in order to develop a hair treatment agent having the above-mentioned preferable characteristics. By using a specific cationic surfactant in combination with silicone oil, it can be applied without stickiness, giving a moist and supple feel to hair and a cuticle that directly causes damage. It has been found that peeling and fluffing can be suppressed, and the present invention has been completed.

Accordingly, the present invention comprises (A) a microemulsion of a waxy substance, (B) a cationic surfactant represented by the following general formula (1) or (2), and (C) a silicone oil. A hair treatment agent characterized by comprising:

[0008]

Embedded image (However, R ₁ represents an alkyl group or hydroxyalkyl group having 8 to 22 carbon atoms, R ₂ and R ₃ each represent an alkyl group having 1 to 3 carbon atoms, a hydroxyalkyl group having 1 to 3 carbon atoms or a benzyl group, R ₄ represents the same substituent as R ₁ or R _2. X ₁ represents a halogen atom or a monoalkyl sulfate group having an alkyl group having 1 to 3 carbon atoms, and among R ₅ , R ₆ , and R ₇ Two or three are an alkyl group having 8 to 20 carbon atoms, the rest is a methyl group, an ethyl group or a hydroxyethyl group, n is an integer of 3 to 10, X ₂ is a halogen atom, a methyl sulfate group or an ethyl sulfate group. .)

Hereinafter, the present invention will be described in more detail. The hair treatment composition of the present invention uses a microemulsion of a waxy substance as the component (A).

[0010] The waxy substance used in the present invention preferably has a melting point of 40 to 90 ° C, and specifically includes paraffin wax, canderia wax, carnauba wax, hydrogenated jojoba wax, wood wax, beeswax, whale wax and the like. And
These waxy substances may be used alone or in combination of two or more.

In the present invention, in particular, water is used as a continuous phase,
An emulsion obtained by emulsifying the waxy substance in water in advance using a surfactant is used, whereby the waxy substance can be uniformly blended in the treatment agent, and the effects of the present invention are effectively exhibited. You. The surfactant used for emulsification may be cationic, anionic, nonionic, or amphoteric surfactant, as long as the waxy substance can be emulsified in water,
Particularly, cationic and nonionic surfactants are preferred.

It is preferable that the average particle size of the emulsion of the waxy substance is 500 nm or less, particularly 100 to 400 nm, from the viewpoint of effectively achieving the object of the present invention. In addition, the content of the waxy substance in the emulsion is 1 to 4
It can be 0% by weight.

The amount of the emulsion of the component (A) is not particularly limited, but is preferably 0.01 to 20% by weight, more preferably 0.05 to 20% by weight, based on the whole hair treatment composition.
-10% by weight, preferably 0.0
If it is less than 1% by weight, the effects of the present invention are hardly exhibited, and
If the content is more than the weight percentage, there may be a case where the feel of the hair feels inconvenient, such as irritability or stiffness.

The component (B) of the present invention is a cationic surfactant, and the one represented by the following general formula (1) or (2) is used.

[0015]

Embedded image

Here, in the general formula (1), R ₁ is an alkyl group or hydroxyalkyl group having 8 to 22 carbon atoms, preferably 12 to 22 carbon atoms, and R ₂ and R ₃ are each a carbon atom having 1 to 22 carbon atoms.
3 represents an alkyl group, a hydroxyalkyl group having 1 to 3 carbon atoms or a benzyl group, and R ₄ represents the same substituent as R ₁ or R ₂ . X ₁ represents a halogen atom or a monoalkyl sulfate group having an alkyl group having 1 to 3 carbon atoms. In the above general formula (2), two or three of R ₅ , R ₆ , and R ₇
One is an alkyl group having 8 to 20 carbon atoms, preferably 12 to 22 carbon atoms, the rest is a methyl group, an ethyl group or a hydroxyethyl group, n is an integer of 3 to 10, X ₂ is a halogen atom, a methyl sulfate group or an ethyl sulfate group. Represents a group. The alkyl group may be linear or branched.

The compounds of the above formula (1) include cetyltrimethylammonium chloride, cetostearyltrimethylammonium chloride, stearyltrimethylammonium chloride, eicosyltrimethylammonium chloride, behenyltrimethylammonium chloride, eicosyldimethylammonium chloride and stearylbenzylammonium chloride. , Behenyldimethylbenzylammonium chloride and the like. Examples of the compound of the formula (2) include distearyl polyethenoxymethyl ammonium halide, dipalmityl polyethenoxyethyl ammonium halide, dipalmityl polyethenoxy hydroxyethyl ammonium halide, tristearyl polyethenoxy ammonium halide, and distearyl polyethenoxy ammonium halide. Stearyl polyethenoxyethyl ammonium ethyl sulfate and the like can be mentioned.

The above-mentioned component (B) can be used alone or in combination of two or more. The compounding amount is preferably 0.01 to 3% by weight, especially 0.01 to 1.5% by weight of the whole hair treatment agent, and if the compounding amount is less than 0.01% by weight, the hair is supple. In addition, the moist feeling may be inferior, the effect of preventing fluffing may not be sufficiently exhibited, and if it exceeds 3% by weight, the hair may be sticky.

The component (C) of the present invention is a silicone oil. As the silicone oil, one selected from an oil-in-water emulsion of a polyether-modified silicone having an HLB of 7 or more and a water-insoluble silicone oil is preferably used. . Specific examples of the polyether-modified silicone having an HLB of 7 or more include a polyoxyethylene / methylpolysiloxane copolymer and a poly (oxyethylene / oxypropylene) / methylpolysiloxane copolymer. Ethylene (5-20) methylpolysiloxane copolymer is preferred. The polyether-modified silicone is a product name such as KF6000 series from Shin-Etsu Chemical Co., Ltd., and SH3 from Dow Corning Toray.
It is commercially available under a trade name such as 700 series and can be easily obtained. An oil-in-water emulsion of a water-insoluble silicone oil is an oil-in-water emulsion obtained by emulsifying a hydrophobic silicone oil which is basically insoluble in water with a surfactant. An oil-in-water emulsion can be used, and for example, those commercially available as BY22-000 series from Dow Corning Toray can be used. One of these silicone oils may be used alone or in combination of two or more. The amount of the silicone oil may be appropriately selected, but is usually 0.1 to 20% by weight, preferably 0 to 20% by weight, based on the total amount of the hair treatment agent. It is blended in a range of 0.5 to 10% by weight. If the content is less than 0.1% by weight, the intended effect cannot be sufficiently exerted.
If it exceeds 0% by weight, stickiness may be exhibited and the film forming ability of the film forming polymer compound may be impaired, which may affect the hair styling effect.

The hair treatment composition of the present invention includes the above (A) to
In addition to the essential component (C), various additives conventionally used in hair treatment agents can be blended as required within a range that does not impair the object of the present invention.

Examples of the additional components include anionic surfactants, nonionic surfactants, amphoteric surfactants, polymer compounds, organic acids such as citric acid and succinic acid and salts thereof, glycine and alanine. Such as amino acids, fungicides, ultraviolet absorbers, higher alcohols, hydrocarbons, ester oils,
Examples include coloring agents, fragrances, solvents such as water, and fatty acids.
These additives may be used alone or in combination of two or more. The blending method is not particularly limited, and it can be blended at an appropriate stage of preparing the hair treatment agent.

The hair treatment composition of the present invention can be used in a wide variety of applications because it can be made into, for example, a liquid, foam, spray, gel or cream. In this case, the hair treatment agent of the present invention is suitable as a hair treatment, and is particularly preferably used as a hair treatment of a type that does not wash away.

[0023]

Industrial Applicability The hair treatment composition of the present invention suppresses fluffiness of cuticles and improves the supple and moist feel.

[0024]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited to the following Examples. In addition,% in each component is% by weight.

[Example 1, Comparative Examples 1 to 3] Hair treatment agents as shown in Table 1 were prepared, and the effect of the cuticle to prevent fluffing was evaluated as "presence or absence of fluff", and the good touch was evaluated as "non-stickiness" and "moist feeling". ", Respectively. Table 1 shows the results.

Here, a method for evaluating the effect of the cuticle to prevent fluffing will be described. As described above, the hair is weakened not only in the surface but also in the internal structure by the chemical treatment such as cold perm, hair coloring, and hair bleaching. This further promotes the occurrence of cuticle peeling, tearing, and breaking of hair on the hair surface due to thermal and physical forces such as a hand dryer, blow and brushing performed for the purpose of drying and setting.

The present inventors have studied a method for evaluating the effect of preventing hair fuzz of a hair bundle that has suffered damage from fluffing / peeling, tearing, or breaking of cuticles. In this case, the brushing treatment under hot air similar to the actual hair and makeup operation had poor reproducibility of the effect and was unsuitable as an evaluation method. Therefore, as a result of intensive studies on the evaluation method, we established a simple and highly reproducible evaluation method in which the hair is given a strong physical force of freeze-drying and the state after the treatment is observed with a scanning electron microscope. did. In normal hair ¹⁾ , fluffiness of cuticles is small even after freeze-drying, but hair treated with a commercial cold perm agent and structurally damaged ²⁾ can show many fluffiness of cuticles. This was confirmed to be appropriate as a method for evaluating the effect of preventing hair from fluffing of damaged hair. 1): 12-year-old woman, no experience of cold perm, hair color and hair bleach. Cut 10cm from the scalp of the back of the head and use a 30cm part. 2) The hair of 1) was treated with a commercially available cold perm agent (25).
° C, 5 minutes).

Evaluation criteria for fluffiness of cuticle The damaged hair 2) (30 cm, 5 g) was treated with a shampoo rinse. Next, 0.2 g of the sample was directly applied, and after sufficient combing was performed, ten professional evaluators visually evaluated by the following method. 3 points: almost no fluff is observed 2 points: slightly fuzz is observed 1 point: evaluation criteria for moist feeling that remarkably fuzz is seen A hair bundle (30 cm, 5 g) treated with shampoo and rinse in the same manner as above. Then, 0.2 g of the sample was directly applied, and after sufficient combing, the sensory evaluation was carried out by 10 expert evaluators according to the following criteria. 3 points: considerably moist compared to the uncoated hair bundle 2 points: slightly moist compared to the uncoated hair bundle 1 point: almost the same non- stick evaluation criteria as the uncoated hair bundle Similarly, 0.2 g of a sample was directly applied to a hair bundle (30 cm, 5 g) treated with a shampoo and a rinse, and sufficiently combed, and then subjected to a sensory evaluation by ten professional evaluators according to the following criteria. 3 points: almost the same as the hair bundle without sample applied 2 points: slightly sticky compared to the hair bundle without sample applied 1 point: considerably sticky compared to the hair bundle without sample applied

For each sample evaluated according to the above criteria, a weighted average of the evaluation points was obtained and indicated by symbols according to the following criteria. ：: Average point is 2.5 or more ：: Average point is 2.0 or more and less than 2.5 Δ: Average point is 1.5 or more and less than 2.0 ×: Average point is less than 1.5

[0030]

[Table 1] 3): Carnauba wax 5 parts, polyoxyethylene (15
EO) 7 parts of lauryl ether and 88 parts of purified water are emulsified at 90 ° C. (average particle diameter: 100 nm) 4): KF6011 HLB: 14.5 (Polyoxyethylene methyl polysiloxane copolymer manufactured by Shin-Etsu Chemical Co., Ltd.)

Example 2 Hair Treatment Wax Emulsion B ⁵⁾ 5.0% Polyether-Modified Silicone B ⁶⁾ 0.8 Stearyltrimethylammonium Chloride 0.6 Birch Extract 1.0 Sorbit Solution 1.0 Polyoxyethylene Hardened castor oil 0.5 Citric acid 0.1 Dihydroxybenzophenone 0.1 Methyl paraben 0.1 Fragrance 0.1 Ethanol 20.0 Purified water Balance 100.0% 5): Carnauba wax 10 parts, polyoxyethylene (30) cetyl 5 parts of ether and 85 parts of purified water are emulsified at 90 ° C. (average particle diameter 200 nm) 6): SH3771 HLB: 13 (manufactured by Dow Corning Toray)

Example 3 Hair Treatment Wax Emulsion C ⁷⁾ 4.0% Polyether-Modified Silicone C ⁸⁾ 0.8 Stearyl Trimethylammonium Chloride 0.6 Birch Extract 1.0 Sorbit Solution 1.0 Polyoxyethylene Hardened castor oil 0.5 Sodium citrate 0.1 Dihydroxybenzophenone 0.1 Methylparaben 0.1 Fragrance 0.1 Ethanol 20.0 Purified water Balance 100.0% Above stock solution: 99.5% N ₂ gas: 0. 5% 100.0% 7): Emulsify 10 parts of canderia wax, 10 parts of polyoxyethylene (25) glyceryl monopyroglutamate and monoisostearate, and 80 parts of purified water at 90 ° C. (average particle diameter 200 nm) 8): KF6012 HLB: 7 (manufactured by Shin-Etsu Chemical Co., Ltd., poly (oxyethylene / oxypropyl) ) Methylpolysiloxane copolymer)

Example 4 Hair Treatment Carboxyvinyl Polymer 0.8% Triethanolamine 0.8 Wax Emulsion A 2.0 Polyether-Modified Silicone A 4.0 Stearyltrimethylammonium Chloride 0.3 Birch Extract 1.0 Sorbit liquid 1.0 Polyoxyethylene hydrogenated castor oil 0.5 Sodium citrate 0.1 Dihydroxybenzophenone 0.1 Methyl paraben 0.1 Fragrance 0.1 Caramel 0.09 Ethanol 20.0 Purified water Balance 100.0%

Claims (1)

[Claims] (A) a microemulsion of a waxy substance, (B)
Cationic surfactant represented by the following general formula (1) or (2) (However, R ₁ represents an alkyl group or hydroxyalkyl group having 8 to 22 carbon atoms, R ₂ and R ₃ each represent an alkyl group having 1 to 3 carbon atoms, a hydroxyalkyl group having 1 to 3 carbon atoms or a benzyl group, R ₄ represents the same substituent as R ₁ or R _2. X ₁ represents a halogen atom or a monoalkyl sulfate group having an alkyl group having 1 to 3 carbon atoms.) (However, two or three of R ₅ , R ₆ and R ₇ are an alkyl group having 8 to 20 carbon atoms, the rest is a methyl group, an ethyl group or a hydroxyethyl group, n is an integer of 3 to 10, X is ₂ represents a halogen atom, a methyl sulfate group or an ethyl sulfate group.) And (C) a silicone oil.