JPS628101B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to hair cosmetics that have excellent effects in imparting 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 smoothness and moisturizing feel of the hair were still insufficient. 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 has been made under the above circumstances, and the present invention is a hair cosmetic that can impart an excellent moisturizing feeling and smoothness to hair when applied to both rinse-type and non-rinse types. The purpose is to provide That is, the hair cosmetic of the present invention has the following general formula ()
Quaternary ammonium salt represented by 0.1 to 3
% by weight, 0.1 to 3% by weight of a quaternary ammonium salt represented by the following general formula (), and 0.1 to 3.0% by weight of a compound represented by the following general formula ().
Contains as an essential component, and ()/()
The weight ratio of is 1/3 to 3/1. 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 (): R ₉ CONH (R ₁₀ CHCONHCHR ₁₀ ) _o COOM (where R ₉ is coconut fatty acid, R ₁₀ is various groups found in amino acids, M is sodium, potassium, triethanolamine salt, or hydrogen , and n is 2
Indicates the number of ~6. ) The amount of the quaternary ammonium salt, which is the first essential component represented by the above general formula (), is 0.1 to 3.0% by weight, preferably 0.1 to 3.0% by weight based on the total hair cosmetic composition.
0.1 to 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 the combability will be poor. 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 amount of the quaternary ammonium salt, which is the second essential component represented by the above general formula (), is 0.1 to 3.0% by weight, preferably 0.1 to 3.0% by weight based on the total hair cosmetic.
0.1 to 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 the combability will be poor. 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 2.5/1. ()/() is less than 1/3 or 3/1
If the amount exceeds 100%, the effects of the present invention cannot be obtained. The amount of the compound represented by the above-mentioned general formula () used as the third essential component in the present invention is 0.1 to 3.0% by weight, particularly preferably 0.5 to 2.0% by weight, based on the total hair cosmetic composition. If it is less than 0.1% by weight, the moisturized and smooth hair that is the effect of the present invention cannot be obtained, and if it exceeds 3.0% by weight,
Increases stickiness, which is not desirable. Further, in the compound of the above general formula (), n is 2 to 6,
Particularly preferred is 4, and a value within this range is necessary to obtain the effects of the present invention. This compound of general formula () is a condensate of a polypeptide and coconut fatty acid. 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 will be explained. Smoothness: 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 "smoothness" of the hair strands. The evaluation criteria is a five-step 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). be. ◎: Good 〇: Slightly good △: Equal ×: Slightly inferior ××: Inferior moisturizing feeling Apply 0.5 g of the sample directly to a shampooed hair bundle (5 g, 20 cm) and spread it evenly by hand.
The hair strands were dried in an atmosphere of 25°C and 65% RH, and after being left overnight, a panel of 20 people evaluated the moisturizing feeling of the hair strands. The evaluation criteria for moist feeling is 1.0% by weight stearyltrimethylammonium chloride, 3% by weight
This is a 5-level evaluation based on the evaluation obtained with a sample (Comparative Example 1) consisting of cetyl alcohol, 10% by weight of propylene glycol, and water (remainder). ◎: Good 〇: Slightly good △ Equal ×: Slightly inferior ××: Inferior Test example 1 19 types of hair cosmetics having the composition shown in Table 1 were prepared and their performance (moisturizing feeling and smoothness) was tested. . The results are shown in the same table. Note that the blending amount is in weight%. (Same for other test examples).

[Table] As is clear from Table 1, mono-C _16-18 alkyl quaternary ammonium salts (*1), mono-C _20-22 alkyl quaternary ammonium salts (*3), and compounds represented by the general formula (* 5) Compositions other than the composition of the present invention (Example 1) (Comparative Examples 1 to 18)
It can be seen that the firmness and smoothness are insufficient. Test Example 2 Eleven hair cosmetics shown in Table 2 were prepared and tested for performance. The results are shown in the same table.

[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 moisturizing feeling and smoothness. Test Example 3 Two types of hair rinse compositions having the formulation shown in Table 3 were manufactured and their performance was evaluated. Performance evaluation was performed after immersing a hair bundle (8.5 g, 20 cm) in 200 ml of a 2% diluted hair rinse composition at 40°C for 5 seconds, rinsing twice with 200 ml of warm water at 40°C for 30 seconds each, and drying. I did it.

[Table] As is clear from Table 3, the hair rinse composition of the present invention has superior smoothness and moisturizing feel compared to conventional products. Test Example 4 A hair cream composition having the formulation shown in Table 4 below was prepared and its performance was evaluated.

【table】

[Table] The hair cream composition of the present invention had an excellent moisturizing feeling and smoothness 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 0.1 to 3% by weight of a quaternary ammonium salt represented by the following general formula (); Contains 0.1 to 3.0% by weight of the compound represented by () as an essential component, and the weight ratio of ()/() is 1/3 to 3/1.
A hair cosmetic characterized by: 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 () R ₉ CONH (R ₁₀ CHCONHCHR ₁₀ ) _o COOM (where R ₉ is coconut fatty acid, R ₁₀ is various groups found in amino acids, M is sodium, potassium, triethanolamine salt, or hydrogen, and n is 2
Indicates the number of ~6. )