JPH0449220A - Hair cosmetic - Google Patents

Abstract

PURPOSE:To obtain a hair cosmetic containing a guanidine derivative and a liquid oil content and capable of smoothing hair after drying with towel, improving combing property and further suppressing unkempt state of hair without making hair sticky after drying. CONSTITUTION:0.05-10wt.% at least one kind of compound selected from a guanidine derivative expressed by the formula (R'is 1-22C alkyl or alkenyl; A is 1-10C alkylene or alkenylene; (m) is 0 or 1; (n) is 1-5) and having an amide group in a molecule and salt thereof is blended with 0.1-10wt.% liquid oil content and further preferably a higher alcohol and, as necessary, proper amounts of other ingredients such as solvent, perfume, sterilizing agent, chelate, ultraviolet absorbing agent, etc., ordinarily used, and the blend is prepared to provide the objective product. The cosmetic is applicable as hair rinse, hair treatment, hair lotion, hair conditioner, etc.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to hair cosmetics such as hair rinses, hair treatments, hair lotions, hair conditioners, etc.
More specifically, the present invention relates to a hair cosmetic that smoothes the hair after towel drying, improves brushability, and prevents dry hair from becoming rough without making the hair sticky.

[Problems to be solved by conventional techniques and inventions] In recent years,
As women become more fashion conscious, there are more and more opportunities to damage their hair. For example, damage caused by heat tools such as a curl dryer, damage caused by chemical treatments such as cold waving or hair dye, and opportunity damage caused by brushing or combing. In terms of normal hair care activities, the use of heat tools, brushing, and combing are performed almost every day, and compared to chemical treatments, the frequency is much higher and is a major cause of hair damage. Especially when the hair contains water, for example after being towel-dried, the hair swells and the hydrogen bonds in the hair are broken, making it soft and easy to stretch. The hair becomes excessively damaged and in severe cases is even cut off. As a result, after drying the hair, the tips of the hair tend to feel dry, and split ends may occur.

Conventionally, as hair cosmetics to eliminate the above-mentioned disadvantages, hair cosmetics such as stearyldimethylammonium chloride and cetyltrimethylammonium chloride have been used.
Hair cosmetics have been proposed in which a grade ammonium salt and a higher alcohol such as cetyl alcohol, stearyl alcohol, or behenyl alcohol are used in combination as active ingredients for preventing hair damage and hair frizz. However, hair cosmetics containing these quaternary ammonium salts and higher alcohols as active ingredients have not been able to achieve satisfactory effects because they are not sufficiently adsorbed onto the hair.

Therefore, in order to improve the adsorption of these active ingredients, animal and vegetable oils, hydrocarbon oils, ester oils, protein decomposition products, and the like are generally used in combination with the quaternary ammonium salt and higher alcohol. However, these oils and protein decomposition products must be blended in large amounts in order to obtain the desired effect, and in the case of products that require rinsing, there is a problem in their persistence in the hair. In addition, due to their nature, these oils and protein decomposition products can give the hair a moist feel after drying and make it easier to manage, but on the other hand, they can leave the hair with a sticky and heavy finish after drying. There is a problem.

For this reason, there is a strong demand for hair cosmetics that can prevent damage to hair after towel drying, and can also suppress dryness without making hair sticky after drying.

The present invention was made in response to the above-mentioned needs, and an object of the present invention is to provide a hair cosmetic that has excellent brushability and smoothness after being towel-dried, and is free from dryness and stickiness after drying.

[Means and effects for solving the problem] As a result of intensive studies to achieve the above object, the present inventors have found the following general formula (1) (wherein R' is a branched chain having 1 to 22 carbon atoms). A is a linear or straight-chain alkyl group or alkenyl group, and A has 1 to 1 carbon atoms.
10 branched or linear alkylene groups or alkenylene groups, and m is O or 1. Moreover, n is an integer of 1-5. ) A liquid oil is combined with one or more selected from the guanidine derivatives having an amide group in the molecule and their salts, and more preferably, a higher alcohol is blended in addition to both of the above components. It has been found that by doing so, a hair cosmetic having all of the above effects can be obtained, and the above objects can be achieved.

That is, the present applicant has previously developed a hair cosmetic in which the active ingredient is highly adsorbed to the hair and imparts excellent flexibility and moisturizing properties to the hair, using the compound of general formula (1) as an active ingredient. The present inventors proposed a hair cosmetic (Japanese Patent Application No. 63-320075), but as a result of further investigation, the above general formula (1)
) and a liquid oil in combination, especially the compound of the general formula (
The combined use of the compound 1), liquid oil, and higher alcohol has a high effect of imparting smoothness to brushing and smoothing the hair after towel drying, and does not cause dryness or stickiness of the hair after drying. The inventors have discovered that it is possible to obtain a hair cosmetic that does not cause hair damage, and have thus come up with the present invention.

The present invention will be explained in more detail below.

The first essential component of the hair cosmetic of the present invention is expressed by the following general formula (
1) (However, in the formula, R1 is a branched or straight-chain alkyl group or alkenyl group having 1 to 22 carbon atoms, and A is a branched or straight-chain alkyl group or alkenyl group having 1 to 22 carbon atoms.
10 branched or linear alkylene groups or alkenylene groups, and m is 0 or 1. Moreover, n is an integer of 1-5. ) are guanidine derivatives with an amide group in the molecule and their salts.

Here, substituent R1 in formula (1) has 1 to 22 carbon atoms,
Preferably it is a 11-19 branched or straight-chain alkyl group or alkenyl group, for example CIIH! :l-+
ClJzs-+ Cl5H2? -I ClJzw-+
Cl5H31-IC, albs-, C, J3s-, (C
sH+7)zcH-, 4-CzHsClsHs. Groups such as -1 are preferred.

Further, substituent A has 1 to 10 carbon atoms, preferably 2 to 6 carbon atoms.
A branched or linear alkylene group or alkenylene group, such as a methylene group, ethylene group, propylene group, butylene group, pentylene group, hexylene group, isopropylene group, 2-pentenyl group, 2-ethylbutylene group, etc. m is 1 or 0.

Note that n is an integer of 1 to 5.

Furthermore, the guanidine derivative of formula (1) is usually formulated in the form of a salt, specifically inorganic acid salts such as hydrochloride, organic acids such as glycolate, acetate, citrate, and acidic amino acid salts. It can be used as a salt, but from the viewpoint of solubility in water, hydrochloride is preferable when using an inorganic acid salt, and glycolate is preferable when using an organic acid salt.

In this case, the guanidine derivative of formula (1) and its salt are:
One type may be blended alone, or two or more types may be used in combination.
In addition, the blending amount is not particularly limited, but the total amount is 0.0
It is preferably 5 to 10% (by weight, hereinafter the same), particularly 0.7 to 5%. If the amount is less than 0.05%, the effect of the present invention may not be sufficient, and if it exceeds 10%, it is not only economically disadvantageous, but also may result in a sticky and heavy finish.

As the liquid oil that is the second essential component of the present invention, for example, hydrocarbon oils, fatty acid ester oils (particularly branched fatty acid ester oils), animal and vegetable oils, etc. are suitably used.

Specific examples of such liquid oils include hydrocarbon oils such as vaseline, liquid paraffin, and squalane, isopropyl palmitate, isopropyl myristate, octyldodecyl myristate, octyldodecyl oleate,
-Fatty acid ester oils such as cetyl ethylhexanoate and neopentyl glycol 2-ethylhexanoate; animal and vegetable oils such as Kyonin oil, olive oil, rapeseed oil, jojoba oil, lanolin oil, mink oil, and camellia oil;

In addition, these may be used individually or in combination of 2 or more types.

The blending amount of these liquid oils is 0.
．． 1 to 10% is preferable, more preferably 0.5 to 5%
It is. If it is less than 0.1%, the effect of the present invention will not be exhibited;
If it exceeds 10%, stickiness or stiffness may occur.

The hair cosmetic of the present invention preferably contains a higher alcohol as a third component in addition to the above-mentioned 1.2 essential components. The third component higher alcohol is, for example, one or a mixture of two or more aliphatic alcohols having 12 to 24 carbon atoms, preferably 16 to 22 carbon atoms. More specifically, lauryl alcohol, myristyl alcohol, palmityl alcohol, stearyl alcohol, cetanol,
Examples include one or a mixture of two or more such as decanol.

The blending amount is not particularly limited, but it is 0.5% of the total composition.
~10%, especially 1-7% by weight is preferred.

If the amount is less than 0.5%, the effect of the present invention may not be sufficient, and if it exceeds 10%, the hair may become sticky.

Depending on the type and purpose of use, the hair cosmetics of the present invention may contain commonly used ingredients, such as solvents and fragrances, that are included in hair cosmetics such as hair rinses and hair treatments, to the extent that they do not affect the effects of the present invention. , bactericidal agents, pigments, chelating agents, ultraviolet absorbers, inorganic electrolytes, water-soluble polymers, etc. can be blended as optional ingredients.

〔Effect of the invention〕

The hair cosmetic of the present invention can smooth the hair after towel-drying, improve brushability, and suppress frizz without making the hair sticky after drying. Since the active ingredients are highly adsorbed and remain on the hair, such effects will not be reduced by rinsing, and sufficient effects can be obtained even with a small amount. Therefore, the hair cosmetic of the present invention is
For example, the above-mentioned effects are effectively exhibited in any state such as a homogeneous state, a non-uniform state, an emulsified state, etc., and whether it is prepared in a type that requires rinsing or a type that does not, the hair rinse agent, hair treatment,
It can be used for a variety of purposes, including dispenser-type hair conditioners and hair lotions.

〔Example〕

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 Examples below. Prior to each side, we will explain the test methods adopted by each side.

One gram of the sample was directly applied to a hair strand (10 g, 20 cm) that had been treated with Oldoi's shampoo and bush shampoo, and was spread evenly over the entire hair strand by hand. Twenty hair strands were dried with a towel until the moisture content was approximately 40%.

Regarding the smoothness of this hair bundle and brushability, 20
Sensory evaluation was performed by a qualified tester. The moist feeling of the hair bundle was evaluated using 1% by weight of a guanidine derivative salt of the following structural formula (a), 3% by weight of cetyl alcohol, and 10% by weight of a guanidine derivative salt having the following structural formula (a).
The evaluation is based on the evaluation obtained using a standard sample consisting of propylene glycol and water (remainder) in weight%, and is compared with the standard sample and judged using the following 5-level evaluation.

◎: Good compared to the standard O: Slightly better than the standard △: Equal to the standard ×: Slightly inferior to the standard , 20c+++) and spread it evenly over the entire hair bundle by hand. Next, after rinsing lightly with hot water at about 40° C., it was left to dry overnight in a constant temperature atmosphere of 25° C. and 65% relative humidity.

The lack of stickiness and lack of dryness of the hair bundle was sensory evaluated by 20 testers.

In this case, the same standard samples as in the case of non-stickiness of the hair bundle and brushability were evaluated in the same manner. <Examples 1 to 12, Comparative Examples 1 to 3> Hair cosmetics shown in Table 1 were prepared and their performance was evaluated. The results are shown in the same table.

As can be seen from the results in Table 1, guanidine derivative salt,
All of the compositions of Examples containing liquid oil exhibited excellent brushability, smoothness, and non-drying performance. In particular, Examples 5 and 6.1 containing higher alcohols
Nos. 1 and 12 showed even better performance.

On the other hand, none of the compositions (comparative examples) containing any of the above-mentioned essential components according to the present invention could achieve the object of the present invention.

<Example 13> A hair rinse composition having the following composition was prepared.

Guanidine derivative salt 0.8% fragrance
Fee 0.5 total 100. C% This composition was sensory evaluated by 10 women, and the smoothness after towel drying, the lack of dryness after brushing and drying, and the lack of stickiness were all evaluated to be excellent.

<Example 14> A hair treatment composition having the following composition was prepared.

Guanidine derivative salt 068% 2-ethylhexanoate cetyl sorbitan sesquiolate propylene glycol 1.0 1.0 7.0 Seranol/stearyl alcohol 5.0 (1:1 mixture by volume) Kyonin oil 2.0 〃Polyoxyethylene (5) Stearyl Ether 160〃 Propylene Glycol 7.0〃Fragrance
Charge 0.5N total
100.0% This composition was sensory evaluated by 10 women, and the smoothness after towel drying, the lack of dryness after brushing and drying, and the lack of stickiness were all evaluated as excellent.

<Example 15> A hair lotion composition having the following composition was prepared.

Guanidine derivative salt 1.0% This composition was sensory evaluated by 10 women, and the results were: smoothness of wet hair when applying the composition, no dryness after brushing and drying, and no stickiness. Both were rated as excellent.

Claims (1)

[Claims] 1. General formula (1) below ▲ Numerical formulas, chemical formulas, tables, etc. ▼ (1) (However, in the formula, R^1 is a branched or linear alkyl having 1 to 22 carbon atoms. group or alkenyl group, A has 1 carbon number
~10 branched or linear alkylene groups or alkenylene groups, and m is 0 or 1. Also, n is 1 to 5
is an integer. 1.) A hair cosmetic comprising one or more selected from guanidine derivatives having an amide group in the molecule and their salts represented by the formula (2) and a liquid oil in combination. 2. The hair cosmetic according to claim 1, which contains a higher alcohol.