JPH0211507A - Hair cosmetic - Google Patents

Abstract

PURPOSE:To obtain a hair cosmetic capable of preventing damage of hair in drying and imparting moistness thereto by blending a cationic surfactant with a phosphoprotein hydrolyzate containing a phosphoric acid ester present in protein molecules or a derivative thereof with a higher alcohol. CONSTITUTION:A hair cosmetic (e.g., hair rinse, hair treatment, hair lotion or hair conditioner) containing a cationic surfactant (e.g., cetyltrimethylammonium chloride) with a phosphoprotein hydrolyzate containing a phosphoric acid ester present in protein molecules (e.g., hydrolyzate of cow's milk casein, egg yolk vitelline or egg white albumin) and a higher alcohol (especially cetyl, stearyl, behenyl alcohols, etc.). Since the above-mentioned cosmetic has high adsorption residual property on hair, effects thereof are not deteriorated by rinsing and sufficient effects can be obtained even in a small amount thereof blended.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to hair cosmetics such as hair rinses, hair treatments, hair lotions, and hair conditioners. The present invention relates to a hair cosmetic that is capable of preventing hair damage during hair drying, and that can provide a moist feeling without stickiness to the hair after drying.

[Problems to be solved by conventional techniques and inventions] In recent years,
BACKGROUND ART So-called blow brushing is a popular method among young women to dry and care for their hair after washing. Blow brushing is a method of brushing and styling hair while it is damp using a heat device such as a hand dryer or curl dryer.
Hair grows more easily when it is damp than when it is dry.
In addition, since it is easy to break, when hair is dried and groomed by blow brushing, hair damage such as hair breakage and hair splitting is likely to occur due to the resistance of the brush. Such hair damage is one of the causes of split ends and dry hair, which are sensually perceived as damage. In addition, the use of heat tools reduces the moisturizing properties of the hair, causing the hair to lose moisture and become more susceptible to damage. These disadvantages are particularly noticeable in hair that has been subjected to chemical treatments such as cold wave treatment and hair dye.

For this reason, in order to eliminate the above-mentioned disadvantages, quaternary ammonium salts such as dialkyldimethylammonium chloride and alkyltrimethylammonium chloride, higher alcohols, animal and vegetable oils, hydrocarbon oils,
Hair cosmetics have been proposed that contain highly moisturizing oils such as ester oils and highly slippery oils as active ingredients for preventing hair damage and imparting a moist feel to the hair.

However, when the above-mentioned hair cosmetics are made into products that require rinsing, they have poor adsorption and persistence on the hair, and a large amount of active ingredients must be blended in order to obtain the desired effect. However, there is a problem in that a small amount of the compound cannot provide sufficient hair damage prevention effect or moisturizing effect. Also, when using a large amount of oil like this,
Although the nature of oil can increase the moisturizing properties of hair and improve its moist feel, it leaves the hair with a sticky and heavy finish after drying, making it impossible to obtain the non-sticky, light moisturizing sensation that is preferred by young women.

On the other hand, in recent years, hair cosmetics have been proposed that use protein derivatives and various amino acids similar to the structural components of hair, as well as the above-mentioned oil. However, similar to the above, this hair cosmetic also has a problem in adsorption and persistence on hair when used as a product that requires rinsing, and a satisfactory effect cannot be obtained with a small amount.

The present invention has been made in view of the above circumstances, and can effectively prevent hair damage during blow brushing, can provide a moist feeling without stickiness to the hair, and even when rinsing is performed. The purpose of the present invention is to provide a hair cosmetic that does not reduce its effectiveness.

[Means and effects for solving the problem] In order to achieve the above object, the hair cosmetic of the present invention contains a cationic surfactant and a hydrolyzate of phosphoprotein in which a phosphate ester is present in the protein molecule or a derivative thereof. and a higher alcohol.

The hair cosmetic of the present invention uses the above three ingredients together as active ingredients to prevent damage to the hair during drying and to give a moist feeling to the hair after drying, thereby reducing the resistance to brushing when the hair is wet. At the same time, it is possible to suppress a decrease in the moisturizing properties of the hair due to the use of a heating tool, and therefore it is possible to satisfactorily prevent damage to the hair during blow brushing. Moreover, this makes it possible to give a moist feeling without stickiness to the hair after drying. The reason why such effects are obtained is not necessarily clear, but unlike the commonly used collagen and keratin, the protein hydrolyzate used in the present invention has a phosphate ester in the protein molecule, so it is difficult to use as a cationic surfactant. This is thought to be because complex salts are easily formed with hair, which increases the adsorption of the active ingredient to hair.

The present invention will be explained in more detail below.

As described above, the hair cosmetic of the present invention contains a cationic surfactant, a hydrolyzate of phosphoprotein in which a phosphate ester is present in the protein molecule or a derivative thereof, and a higher alcohol.

Here, the type of cationic surfactant that is the first essential component of the hair cosmetic of the present invention is not limited, but in particular, quaternary ammonium salts represented by the following maximum (1), or mono-N-long Examples include chain acyl basic amino acid lower alkyl ester salts, and one or two types of these can be suitably used.

[However, in the formula, R+ or R+, Rz has 10 to 10 carbon atoms.
24 alkyl group or alkenyl group, carbon number 10-24
hydroxyalkyl k or R (OC112C112)
. (However, R is an alkyl group having 10 to 24 carbon atoms or a hydroxyalkyl group having 10 to 24 carbon atoms, and n is 1 to 10
), and RZI R3, R4 or R,, R4 is an alkyl group having 1 to 3 carbon atoms, +CHCH20+T! 1(
However, m is a number from 1 to 5, R2 is H or CH3), a Hensyl group, or a cinnamyl group, and X is a halogen atom or an alkyl sulfate group having 1 or 2 carbon atoms.

] The quaternary ammonium salts represented by maximum (1) above include long-chain monoalkyl quaternary ammonium salts and long-chain dialkyl quaternary ammonium salts. In this case, this long chain alkyl group preferably has 10 to 10 carbon atoms.
24, more preferably 12 to 22. The number of carbon atoms in this alkyl group is an important factor; if the number of carbon atoms is less than 10, the ability to make hair soft and supple tends to decrease. Furthermore, when the number of carbon atoms exceeds 24, the hair becomes stiff and hard, and the ability to soften the hair tends to decrease. On the other hand, when the number of carbon atoms is in the range of 10 to 24, the hair cosmetic composition becomes moderately hydrophobic and has an increased affinity for the hair, and also has a moderate water retention property, so that it is suitable for the hair. Excellent ability to make it soft and supple. In addition, the anion constituting the quaternary ammonium salt represented by this formula (1) is a halogen atom or has 1 to 2 carbon atoms.
When the hair cosmetic composition is an alkyl sulfate group, the hair cosmetic composition has appropriate hydrophobicity and water retention.

Another example of the cationic surfactant which is the first essential component of the present invention is an N-long chain acyl basic amino acid lower alkyl ester salt. Examples of the basic amino acids constituting the mono-N-long chain acyl basic amino acid lower alkyl ester salt include natural amino acids such as ornithine, lysine, and arginine. Furthermore, for example α, γ
-Synthetic amino acids such as diaminobutyric acid can be used as well. These may be optically active or racemic.

Moreover, the acyl group is a saturated or unsaturated higher fatty acid residue having 8 to 22 carbon atoms. These may be natural or synthetic. For example, single higher fatty acid residues such as lauroyl, myristoyl, valmitoyl and stearoyl groups, as well as natural mixed higher fatty acid residues such as coconut oil higher fatty acid residues and tallow higher fatty acid residues, can be employed. Suitable lower alkyl ester components include methyl ester, ethyl ester, propyl ester, methyl ester, pentyl ester, hexyl ester, heptyl ester and octyl ester. Examples of the salt include inorganic acid salts such as hydrochloride or sulfate, or acetate, tartrate, citrate, p-toluenesulfonate, higher fatty acid salt, acidic amino acid salt or pyroglutamate. Organic acid salts such as the following can be employed. Among these, hydrochloride,
Preference is given to the L- or DL-pyrrolidone carboxylate salt and acidic amino acid salt forms.

The amount of the first essential component of the present invention is preferably 0.05 to 5% by weight based on the total hair cosmetic composition.

The second essential component of the hair cosmetic of the present invention is a hydrolyzate of phosphoprotein in which a phosphate ester is present in the protein molecule or a derivative thereof; are milk casein, egg yolk telin, egg albumin, non-thermocoagulated egg white described in JP-A-61-280413, ovalbumin as described in JP-A-58-41811, milk casein as described in JP-A-62-185100, Examples include polypeptides described in Japanese Patent Publication No. 61-59281. In the present invention, one or two of these protein hydrolysates and their derivatives are used.
More than one species can be suitably used. In this case, these hydrolysates can be those decomposed by a normal protein hydrolyzing method. Further, cation-modified derivatives, fatty acid condensation-modified derivatives, etc. of this hydrolyzate can also be used. It is preferable to use these protein hydrolysates or derivatives thereof having a phosphoric acid content of 0.1 to 10% (based on the protein hydrolyzate), and milk casein hydrolysates are particularly suitable.

The amount of the second essential component of the present invention is usually 0.05 to 5% by weight, preferably 0.1% by weight based on the entire hair cosmetic.
~3% by weight. If the amount is less than 0.05% by weight, the effect of the present invention will not be fully exhibited, and if it exceeds 5% by weight, the hair may have a sticky and heavy finish.

As the higher alcohol, which is the third essential component of the present invention, one or more linear higher alcohols having 12 to 24 carbonates are preferably used, especially cetyl alcohol, stearyl alcohol, and behenyl alcohol. , especially those with a weight ratio of 16 carbonates to 18 carbonates of 7:3.
It is preferable to use cetostearyl alcohol which is ˜3 nia.

The amount of the third essential component of the present invention is usually 0.5 to 10% by weight, preferably 1 to 5% by weight, based on the total hair cosmetic composition. If the amount is less than 0.5% by weight, the effect of the present invention may not be exhibited, and if it exceeds 10% by weight, the hair may become sticky and the finish may feel heavy.

The weight ratio of the first essential component, second essential component, and third essential component is preferably 1 to 3:2 to 6:3 to 9.

Depending on the type and purpose of use, the composition of the present invention may optionally contain other ingredients within a range that does not affect the effects of the present invention. , hair cream, hair lotion, etc. Such optional ingredients include:

i.e. hydrocarbons such as liquid paraffin, petrolatum, solid paraffin, squalane and olefin oligomers; isopropyl myristate, isopropyl palmitate,
Esters such as stearyl stearate, octyldodecyl myristate, octyldodecyl oleate, and 2-ethylhexanoic acid triglyceride; vegetable oils such as tupaki oil, olive oil, avocado oil, and versic oil; glyceryl fatty M ester, sorbitan fatty acid ester, polyoxyethylene Emulsifiers such as fatty acid esters, polyglycerol fatty acid esters, and polyoxyethylene sorbitan fatty acid esters; Cellulose derivatives such as methylcellulose, hydroxypropylulose, hydroxypropylcellulose, and cationized cellulose; Thickeners such as natural polymers; ethylene glycol, propylene Moisturizing agents such as glycol, 1,3-butylene glycol, glycerin and sorbitol; Pearl luster imparting agents such as polyethylene glycol, higher fatty acid ethanolamide, mica titanium and fish skin foil; other solvents, disinfectants, chelating agents,
These include ultraviolet absorbers, colorants, fragrances, etc., and one or more of these can be blended.

〔Effect of the invention〕

As explained above, the hair cosmetic of the present invention prevents damage to the hair during blow brushing performed using a heat tool such as a hair dryer after washing the hair, and leaves the hair moisturized without stickiness after drying. It is possible to give a finish with a soft feel, and since the active ingredient has a high adsorption and persistence on the hair, this effect does not decrease with rinsing, and a sufficient effect can be obtained even with a small amount. It is something that can be done.

EXAMPLES Hereinafter, the present invention will be specifically explained with reference to Examples and Comparative Examples, but the present invention is not limited to the following Examples. Before presenting the Examples and Comparative Examples, the test methods and sample preparation methods in the Examples and Comparative Examples will be described.

Hair strands that have been shampooed with Blow Bouching (cold wave treatment: Part 1)
10 minutes of liquid, 10 minutes of second liquid, hair, 10g.

Apply the sample (hair cosmetic) Ig directly to a 20 cm), spread it evenly over the entire hair strand with your hands, rinse lightly with 40°C warm water, and then brush 300 times with a hair dryer under hot air at 60°C. 5 minutes) and dry. After repeating this operation 10 times, 25℃, 65%RH
The hair tresses were left in a constant temperature and humidity room for 24 hours, and 10 judges sensory-evaluated the frizziness, which is a subjective factor for damage.

In this case, the evaluation obtained using a standard sample consisting of 1% cetyltrimethylammonium chloride, 3% by weight cetyl alcohol, 3% by weight propylene glycol, and water (the remainder) is used as the standard, and the comparison with this Judgment was made using the following 5-level evaluation criteria.

◎Good compared to the two-base ratio ○: Slightly better than the two-base ratio △: Same two-base ratio ×: Slightly inferior compared to the standard ××: Inferior compared to the standard Judgment was made using the same evaluation method and criteria as Nasu.

It was judged using the same evaluation method and evaluation criteria as the above-mentioned lack of dryness.

Each component that can be dissolved in an oil phase, such as a cationic surfactant, a higher alcohol, a protein hydrolyzate, an emulsifier, and propylene glycol, is heated and dissolved to form an oil phase.

Next, water-soluble substances (components that cannot be dissolved in the oil phase) are added to purified water, heated to 30-70°C, emulsified with a homomixer, cooled to room temperature while stirring with a paddle mixer, and prepared as a test sample. shall be. In addition, when adding fragrance, the cooling process (
30°C to 50°C).

[Examples 1 to 4. Comparative Examples 1 to 5] Nine types of hair cosmetics having the compositions shown in Table 1 were prepared and their performance was tested. The results are shown in the same table. In addition, the numbers in the table represent weight %.

As is clear from the results in Table 1, the compositions of Examples 1 to 4 containing the three essential ingredients all exhibited excellent properties such as no dryness, moist feeling, and no stickiness. In contrast, a composition containing no cationic surfactant, which is the first essential component of the present invention (Comparative Example 1), and a hydrated phosphoprotein containing a phosphate ester in the molecule, which is the second essential component. Compositions containing no decomposition products or consisting of other protein hydrolysates (Comparative Examples 2, 4 and 5), compositions containing no higher alcohol as the third essential component (Comparative Example 3)
) were unable to achieve the object of the present invention.

(Example 5) A hair treatment having the following composition was prepared by the above method, and its performance was evaluated in the same manner as in Examples 1 to 4 and Comparative Examples 1 to 10.

Distearyldimethylammonium chloride 2.0% by weight Stearyltrimethylammonium chloride 1.0 Cetostearyl alcohol *5 4.0% by weight protein hydrolyzate■ *62.0 Diglycerine diisostearate 1.0POE (
30) Hydrogenated castor oil 0.5 Mink oil 0.5 Glycerin
5.0 Green No. 3
Trace yellow No. 203 mixed fragrance 0.6 purified ice
Remaining 100, 0% by weight *5 Cetyl alcohol/scearyl alcohol = 1/
1 *6 This hair treatment, which is the same as protein hydrolyzate ■ in Table 1, showed good performance in terms of preventing dryness, moisturizing, and non-stickiness (no dryness, moist feeling, and non-stickiness) Also ◎).

[Example 6] A hair rinse with the following composition was prepared by the above method, and 1 to 4
．． The performance was evaluated in the same manner as Comparative Examples 1 to 10.

N-lauroyl ricarboxylate cetostearyl alcohol protein hydrolyzate *8 Sorbitan monooleate monomyristate isopropyl POE (5) Stearyl ether liquid paraffin (50 seconds) 1,3 Butylene glycol Red No. 106 Oxybenzone mixed fragrance Methyl paraben Purified water Dine methyl ester pyrrolidone 1.0% by weight *72.0 1.0 0.5 0.5 1.0 0.5 5.0 Trace amount 0, 1 0.4 0.2 Remaining 100.0% by weight Cetyl Alcohol/stearyl alcohol 7/3 Same as fluorescent white hydrolyzate ■ in Table 1 *7 *8 This hair rinse showed good performance in terms of preventing dryness, moisturizing, and non-stickiness (no dryness,
The moist feeling and non-stickiness are both ◎).

Claims (1)

[Claims] 1. A hair cosmetic containing a cationic surfactant, a hydrolyzate of phosphoprotein in which a phosphate ester is present in the protein molecule or a derivative thereof, and a higher alcohol.