JPS628085B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a hair cosmetic that has excellent effects in imparting combability, smoothness, and moisturizing feel to hair. Normally, hair is covered with animal and vegetable oils such as hair creams and hair oils, as well as sebum secreted from the hair itself, but when hair is washed with soap or synthetic detergents, these oils and fats are removed more than necessary. Put it away. As a result, the hair after washing loses its smoothness, feels dry and stiff, and becomes difficult to comb, making it more likely to cause split ends and split ends. In order to eliminate such inconveniences, various hair cosmetics have been developed and used as hair treatment agents after hair washing. These hair cosmetics contain quaternary compounds such as dialkyldimethylammonium chloride and alkyltrimethylammonium chloride.
The main active ingredient is grade ammonium salt. There are two types of ammonium salts: those that are poorly soluble in water and those that are easily soluble in water.Therefore, correspondingly, there are two types of hair cosmetics: ``rinse type'' and ``non-rinse type.'' However, each type of use is different. In order to prevent hair from squeaking and tangling after washing, etc., and to improve the finish when dry, the above ammonium salt must be adsorbed to the hair. However, conventional hair cosmetics have problems with the release and adsorption properties of the ammonium salt, regardless of the form of use, and are not fully satisfactory. In particular, the combability, smoothness and moisturizing feel of the hair were unsatisfactory. In addition, various fiber treatment agents such as fiber softeners have been known, but fibers, especially animal fibers, have a chemical structure similar to hair, but a physical structure that is completely different from hair. Therefore, it is difficult to apply such fiber treatment agents to hair. The present invention was made under the above circumstances, and exhibits excellent combability, smoothness, and moisturizing feeling when applied to both rinsing type and non-rinsing type. The purpose is to provide hair cosmetics. That is, the hair cosmetic of the present invention contains 0.1 to 3% by weight of a quaternary ammonium salt represented by the following general formula () and 0.1 to 3% by weight of a quaternary ammonium salt represented by the following general formula (). It is characterized in that it is contained as an essential component, and the weight ratio of ()/() is more than 1.5/1 and less than 3/1. General formula (): (In the formula, R ₁ is an alkyl group having 20 to 22 carbon atoms,
R ₂ , R ₃ and R ₄ represent an alkyl group or hydroxyalkyl group having 1 to 3 carbon atoms, and X represents a halogen atom or an alkyl sulfate group having 1 or 2 carbon atoms in the alkyl group. ) General formula (): (In the formula, R ₅ and R ₆ are alkyl groups with 16 to 18 carbon atoms, R ₇ and R ₈ are alkyl groups with 1 to 3 carbon atoms or hydroxyalkyl groups, and X is a halogen atom or an alkyl group with 1 carbon number. or 2.) Hereinafter, the hair cosmetic of the present invention will be explained in more detail. The first essential component of the hair cosmetic of the present invention is a mono-C _20-22 alkyl quaternary ammonium salt represented by the following general formula (). General formula (): (In the formula, R ₁ is an alkyl group having 20 to 22 carbon atoms,
R ₂ , R ₃ and R ₄ represent an alkyl group or hydroxyalkyl group having 1 to 3 carbon atoms, and X represents a halogen atom or an alkyl sulfate group having 1 or 2 carbon atoms in the alkyl group. ) The blending amount of the first essential ingredient is 0.1 to 3.0% by weight, preferably 0.1 to 3.0% by weight based on the entire hair cosmetic.
It is 2.0% by weight. If it is less than 0.1% by weight, the effect of the present invention will not be exhibited, and if it exceeds 3.0% by weight, the hair will become sticky and heavy, which is not preferable. The following substances are representative examples of the first essential component. eicosyltrimethylammonium chloride,
Heneicosyltrimethylammonium chloride, docosyltrimethylammonium chloride,
docosyltrimethylammonium bromide, docosyltrimethylammonium chloride, docosyltrimethylammonium methyl sulfate. The second essential component of the hair cosmetic of the present invention is a diC _16-18 alkyl quaternary ammonium salt represented by the following general formula (). General formula (): (In the formula, R ₅ and R ₆ are alkyl groups with 16 to 18 carbon atoms, R ₇ and R ₈ are alkyl groups with 1 to 3 carbon atoms or hydroxyalkyl groups, and X is a halogen atom or an alkyl group with 1 carbon number. (or 2 alkyl sulfate group)) The amount of the second essential component is 0.1 to 3.0% by weight, preferably 0.1 to 3.0% by weight, based on the total hair cosmetic.
It is 2.0% by weight. If it is less than 0.1% by weight, the effect of the present invention will not be exhibited, and if it exceeds 3.0% by weight, the hair will become sticky and heavy, which is not preferable. Representative examples of the second essential component include the following substances. Dipalmityldimethylammonium chloride,
Distearyldimethylammonium chloride, di-hydrogenated tallow alkyldimethylammonium chloride, di-hydrogenated tallow alkyldimethylammonium bromide, di-hydrogenated tallow alkyldiethylammonium methylsulfate. In the hair cosmetic of the present invention, the weight ratio ()/() of the quaternary ammonium salt of the above general formula () to the quaternary ammonium salt of the general formula () is
must be in the range of more than 1.5/1 and less than 3/1.
Particularly preferably, ()/()=1.75/1 to 2.5/1
It is. ()/() or less than 1.5/1 or
If it exceeds 3/1, the smoothness of the hair will deteriorate, and the combability and moisturizing feeling will also deteriorate slightly, which is not preferable. The hair cosmetic of the present invention contains other optional ingredients,
It is possible to mix them within a range that does not affect the effects of the present invention. Such optional ingredients include the following substances. liquid paraffin, vaseline, solid paraffin,
Hydrocarbons such as squalane and olefin oligomers; esters such as isopropyl myristate, isopropyl palmitate, stearyl stearate, octyldodecyl myristate, octyldodecyl oleate and 2-ethylhexanoic acid triglyceride; cetanol, stearyl alcohol, behenyl alcohol and hexyldecanol, etc. higher alcohols; emulsifiers such as glyceryl monostearate, sorbitan monopalmitate, polyoxyethylene cetyl ether, polyoxyethylene stearate and polyoxyethylene sorbitan monolaurate; methylcellulose, hydroxyethylcellulose, hydroxypropylcellulose and cationized cellulose cellulose derivatives such as; thickeners such as natural polymers; humectants such as ethylene glycol, propylene glycol, 1,3-butylene glycol, glycerin and sorbitol; and other small amounts of ingredients such as solvents, disinfectants, and fragrances. . The hair cosmetic composition of the present invention can be used in various applications such as a hair rinse, a spray-type or dispenser-type hair conditioner, and a hair lotion. Next, Examples and Comparative Examples of the present invention will be shown to explain the effects of the present invention more specifically. Before explaining each example, the test method employed in each example will be explained. Test method: Apply 0.5g of the sample directly to a shampooed hair bundle (5g, 20cm) and spread it evenly by hand.
After drying in an atmosphere of 25°C and 65% RH, and leaving it for a day and night, 20 panelists sensory-evaluated the ``combability'', ``smoothness'' and ``moisture feeling'' of the hair strands. The evaluation criteria is a 5-level evaluation based on the evaluation obtained with a sample consisting of 1.0% by weight stearyltrimethylammonium chloride, 3% by weight cetyl alcohol, 10% by weight propylene glycol, and water (remainder). ◎: Good 〇: Slightly good △: Equal ×: Slightly inferior ××: Inferior Test Example 1 Nine types of hair cosmetics containing various quaternary ammonium salts were prepared and tested for their performance on hair. The results are shown in Table 1 below. In addition, the blending amount is weight % (the same applies to other test examples).

【table】

[Table] As is clear from Table 1, mono-C _20-22 alkyl quaternary ammonium salt and di-C _16-18 alkyl quaternary ammonium salt
Cosmetics containing quaternary ammonium salts other than the combination with quaternary ammonium salts (Example 1) (Comparative Example 1-
It can be seen that 8) does not satisfy all of the combability, smoothness, and moist feeling. Test Example 2 Nine types of hair cosmetics were prepared with various weight ratios of mono-C _20-22 alkyl quaternary ammonium salt and di-C _16-18 alkyl quaternary ammonium salt,
Their performance on hair was tested. The results are shown in Table 2 below.

【table】

[Table] As is clear from Table 2, the weight ratio of mono-C _20-22 alkyl quaternary ammonium salt to di-C _16-18 alkyl quaternary ammonium salt exceeds 1.5/1 and is 3/1.
Excellent smoothness when:
It can be seen that it exhibits combability and a moist feeling. Test Example 3 A hair rinse composition having the formulation shown in Table 3 below was manufactured, and its performance on hair was evaluated. Performance evaluation was performed on hair rinse composition 2 at 40°C.
A hair bundle (8.5 g, 20 cm) was immersed in 200 ml of the diluted solution for 5 seconds, rinsed twice with 200 ml of 40°C warm water for 30 seconds each, and dried.

[Table] As is clear from Table 3, the hair rinse composition of the present invention has superior smoothness, combability, and moisturizing properties compared to conventional hair rinse compositions. Test Example 4 A hair cream composition having the formulation shown in Table 4 below was manufactured, and its hair softening effect was evaluated.

[Table] The hair cream composition of the present invention had excellent combability, smoothness, and moisturizing effect not found in conventional hair creams.

Claims (1)

[Scope of Claims] 1 0.1 to 3% by weight of a quaternary ammonium salt represented by the following general formula () and 0.1 to 3% by weight of a quaternary ammonium salt represented by the following general formula () as essential components. 1. A hair cosmetic containing the following: and having a weight ratio of ()/() of more than 1.5/1 and less than 3/1. General formula (): (In the formula, R ₁ is an alkyl group having 20 to 22 carbon atoms,
R ₂ , R ₃ and R ₄ represent an alkyl group or hydroxyalkyl group having 1 to 3 carbon atoms, and X represents a halogen atom or an alkyl sulfate group having 1 or 2 carbon atoms in the alkyl group. ) General formula (): (In the formula, R ₅ and R ₆ are alkyl groups with 16 to 18 carbon atoms, R ₇ and R ₈ are alkyl groups with 1 to 3 carbon atoms or hydroxyalkyl groups, and X is a halogen atom or an alkyl group with 1 carbon number. or 2 alkyl sulfate group)