JPS628100B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention provides hair with combability, smoothness,
The present invention relates to a hair cosmetic that has excellent effects in imparting flexibility and moisturizing feeling. Normally, hair is covered with animal 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. It will be done. 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, flexibility and moisturizing feel of the hair were still unsatisfactory. In addition, various fiber treatment agents such as fiber softeners have been known, but although fibers, especially animal fibers, have a chemical structure similar to that of hair, their physical structure is completely different from that of hair. For,
Application of such fiber treatment agents to hair is difficult. The present invention was made under the above circumstances, and provides excellent combability, smoothness, flexibility, and moisturizing feeling to hair regardless of whether it is applied to rinsing type or non-rinsing type. The purpose of the present invention is to provide a hair cosmetic that exhibits performance that can be imparted to hair. 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 (), 0.1 to 3% by weight of a quaternary ammonium salt represented by the following general formula (), Contains as essential components a total amount of 0.5 to 4.0% by weight of two types of compounds represented by the following general formulas () and (), respectively, and the weight ratio of ()/() is 1/3 to 3/1, The weight ratio of ()/() is 2/8 to 8/2. General formula (): (In the formula, R ₁ is an alkyl group having 16 to 18 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 is an alkyl group having 20 to 22 carbon atoms,
R ₆ , R ₇ and R ₈ 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, a+b+c is 20 to 25) General formula () (In the formula, R is an alkyl group having 12 to 18 carbon atoms.) 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 _16-18 alkyl quaternary ammonium salt represented by the following general formula (). General formula (): (In the formula, R ₁ is an alkyl group having 16 to 18 carbon atoms,
R ₂ , R ₃ and R ₄ represent an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group, 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. palmityltrimethylammonium chloride,
Stearyltrimethylammonium chloride, hydrogenated tallow alkyltrimethylammonium chloride, hydrogenated tallow alkyltrimethylammonium bromide, hydrogenated tallow alkyltriethylammonium methyl sulfate. The second 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 ₅ is an alkyl group having 20 to 22 carbon atoms,
R ₆ , R ₇ and R ₈ 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 amount of the second 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. Representative examples of the second essential component include the following substances. eicosyltrimethylammonium chloride,
Heneicosyltrimethylammonium chloride, docosyltrimethylammonium chloride,
Docosyltrimethylammonium bromide, docosyltriethylammonium chloride, docosyltrimethylammonium methyl sulfate. 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 1/3 to 3/1.
Particularly preferably ()/()=1/2.5 to 2.5/
It is 1. If ()/() is less than 1/3 or exceeds 3/1, the effects of the present invention cannot be obtained, which is not preferable. The third essential component of the present invention is polyoxyethylene glyceryl monopyroglutamate monoisostearate represented by the following general formula (). General formula () (In the formula, a+b+c is 20 to 25) In the general formula (), a+b+c is 20 to 25.
25, and the effects of the present invention cannot be obtained outside this range. The fourth essential component of the present invention is expressed by the following general formula ()
It is a compound represented by General formula () (In the formula, R is an alkyl group having 12 to 18 carbon atoms.) In the general formula (), if the number of carbon atoms is less than 12 or more than 18, the effects of the present invention cannot be obtained. The weight ratio of the third and fourth essential components respectively represented by the general formulas () and () explained above is ()/()=2/8 to 8/2, preferably 4/6 to 6/4. and their total amount is 0.5 to 4.0 with respect to the entire hair cosmetic composition.
% by weight, preferably 1.0-3.0% by weight. If ()/() is less than 2/8, the combability and moisturizing feeling will be poor. If it exceeds 8/2, the softness will be significantly inferior. Furthermore, if the total amount of the third and fourth essential components is less than 0.5% by weight based on the entire hair cosmetic composition, smoothness and flexibility will be poor.
If it exceeds 4.0% by weight, it will become more sticky, heavier, and the smoothness will deteriorate. 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 minor components 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 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 overnight, 20 panelists sensory-evaluated the ``combability'', ``smoothness'', ``flexibility'', and ``moisture feeling'' of the hair strands. . The evaluation criteria is a 5-level evaluation based on the evaluation obtained with a sample (Comparative Example 1) consisting of 1.0% by weight stearyltrimethylammonium chloride, 3% by weight cetyl alcohol, 10% by weight propylene glycol, and water (balance). It is. ◎: Good 〇: Slightly good △: Equal ×: Slightly inferior ××: Inferior Test Example 1 28 types of hair cosmetics containing various quaternary ammonium salts and/or the third and fourth essential ingredients of the present invention and adjust the performance of those hairs (combability, smoothness, flexibility, moisturizing feeling)
was tested. The results are shown in Table 1. In addition, the blending amount is weight % (the same applies to other test examples).

【table】

【table】

[Table] As is clear from Table 1, the combination of mono-C _16-18 alkyl quaternary ammonium salt, mono-C _20-22 alkyl quaternary ammonium salt, compound () and compound () (Example 1 It can be seen that none of the formulations other than ) (Comparative Examples 1 to 27) had sufficient combability, smoothness, flexibility, and moisturizing feeling. Test Example 2 Seven types of hair cosmetics with different weight ratios of mono-C _16-18 alkyl quaternary ammonium salt and mono-C _20-22 alkyl quaternary ammonium salt were prepared, and their performance on hair was evaluated. was tested. The results are shown in Table 2 below.

[Table] As is clear from Table 2, when the weight ratio of mono-C _16-18 alkyl quaternary ammonium salt to mono-C _20-22 alkyl quaternary ammonium salt is 1/3 to 3/1 It can be seen that all of them exhibit excellent combability, smoothness, flexibility, and moisturizing feeling. Test Example 3 The type and amount of mono C _16-18 alkyl quaternary ammonium salt, mono C _20-22 alkyl quaternary ammonium salt, and the third and fourth essential components were changed.
Ten types of hair cosmetics were prepared and tested for their performance on hair. The results are shown in Table 3 below.
Shown below.

【table】

[Table] As is clear from Table 3, all the hair cosmetics in which the amounts and types of each essential ingredient of the present invention are varied within the range of the present invention exhibit excellent performance. Test Example 4 Two types of hair rinse compositions having the formulations shown in Table 4 below were manufactured and their performance was evaluated. Performance evaluation was performed using a 2% diluted solution of hair rinse composition at 40°C.
Soak a bundle of hair (8.5g, 20cm) in 200ml for 5 seconds,
The samples were rinsed twice with 200 ml of warm water at ℃ for 30 seconds each time and dried.

【table】

[Table] As is clear from Table 4, the hair rinse composition of the present invention has superior combability and
It can be seen that it has the properties of smoothness, flexibility, and moist feeling. Test Example 5 A hair cream composition having the formulation shown in Table 5 below was manufactured and its performance was evaluated.

【table】

[Table] The hair cream composition shown in Table 5 had excellent combability, smoothness, flexibility, and moisturizing properties that are 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 (), 0.1 to 3% by weight of a quaternary ammonium salt represented by the following general formula (), and each of the following general Contains a total amount of 0.5 to 4.0% by weight of two types of compounds represented by formulas () and () as essential components, and the weight ratio of ()/() is 1/3 to 3/1,
A hair cosmetic characterized in that the weight ratio of ( )/( ) is 2/8 to 8/2. General formula (): (In the formula, R ₁ is an alkyl group having 16 to 18 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 is an alkyl group having 20 to 22 carbon atoms,
R ₆ , R ₇ and R ₈ 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, a+b+c is 20 to 25) General formula () (In the formula, R is an alkyl group having 12 to 18 carbon atoms)