JPS628104B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a hair cosmetic that has excellent effects in imparting combability and flexibility 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 and flexibility 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 provides a hair cosmetic that can impart excellent combability and flexibility to hair when applied to both rinsing and non-rinsing types. The purpose is to That is, the hair cosmetic of the present invention contains 0.1 to 3 quaternary ammonium salts represented by the following general formula ().
% by weight, 0.1 to 3% by weight of a quaternary ammonium salt represented by the following general formula (), and a higher alcohol as essential components, and ()/
() (weight ratio) is 1/3 to 3/1, () +
()/Higher alcohol (weight ratio) is 1/22~
It is characterized by being 1/11. 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. ) 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-mentioned 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. The third essential component of the hair cosmetic of the present invention is a higher alcohol, preferably a higher alcohol having a chain length of _C16-22 . Specific examples of such higher alcohols include saturated monohydric alcohols such as hexadecanol (cetyl alcohol), heptadecanol, octadecanol (stearyl alcohol), eicosyldecanol, docosyldecanol, and other fatty alcohols. There are family alcohols. More preferably, C ₁₆ /C ₁₈ (weight ratio) is 3/
Higher alcohol mixture, C ₁₆ /
A higher alcohol mixture having a C ₁₈ /C ₂₂ (weight ratio) of 6/2/1 to 4/3/2 is preferable. In the hair cosmetic of the present invention, the weight ratio of the total amount of the quaternary ammonium salts () and () to the higher alcohol must be within the range of 1/22 to 1/11. A particularly preferable range is 1/2.5~
It is 1/8. If the ratio of ()+()/higher alcohol is less than 1/11, the flexibility will be extremely poor, and if it exceeds 1/22, the combability and smoothness will be poor. It is possible to incorporate other optional ingredients into the hair cosmetic of the present invention 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; glyceryl monostearate, sorbitan monopalmitate Emulsifiers such as , polyoxyethylene cetyl ether, polyoxyethylene stearate, and polyoxyethylene sorbitan monolaurate; Cellulose derivatives such as methyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, and cationized cellulose; Thickeners of natural polymers, etc. moisturizers 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, the effects of the present invention will be explained more specifically using various test examples showing examples of the present invention and comparative examples. Before explaining the test examples, the test method will be explained. Test method: Apply 0.5 g of sample directly to a shampoo-treated hair bundle (5 g, 20 cm), spread it evenly by hand, dry in an atmosphere of 25°C and 65% RH, and comb the hair bundle after leaving it overnight. A sensory evaluation was conducted by 20 panelists regarding the ease of passing through the hair and the flexibility of the hair. The evaluation was based on a 5-level evaluation based on the evaluation obtained with a sample (Comparative Example 1) consisting of 1.0% by weight stearyltrimethylammonium chloride, 3.0% by weight cetyl alcohol, 10% by weight propylene glycol, and water (remainder). I did it. ◎: Very good 〇: Slightly good △: (Standard) equivalent ×: Slightly inferior ××: Inferior Test example 1 19 types of hair cosmetics containing various combinations of the 4 types of quaternary ammonium salts shown in Table 1 were prepared. and tested their performance (combability, flexibility). The results are shown in the same table. In addition, the blending amount is weight % (the same applies to other test examples).

[Table] As is clear from Table 1, hair cosmetics containing mono-C _16-18 cation A and mono-C _20-22 cation C, which are the first and second essential ingredients of the present invention (Examples 1 and 2) ) all exhibit excellent combability and flexibility, but hair cosmetics other than these (Comparative Examples 1 to 17) are found to have insufficient combability and flexibility. Test example 2 The type and amount of quaternary ammonium salt were varied.
We prepared 11 types of hair cosmetics and tested their performance. The results are shown in Table 2.

[Table] As is clear from Table 2, 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.
and the weight ratio of the total monoalkyl quaternary ammonium salt to the higher alcohol is 1/22 ~
It can be seen that when the ratio is 1/11 (Examples 3 to 11), all exhibit excellent combability and flexibility. 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 better combability and flexibility than conventional ones. Test Example 4 A hair cream composition having the composition shown in Table 4 below was prepared and its performance was evaluated.

【table】

[Table] The hair cream composition of the present invention had excellent combability and flexibility 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 ()
Contains and higher alcohol as essential ingredients,
and ()/() (weight ratio) is 1/3 to 3/1
A hair cosmetic characterized in that ()+()/higher alcohol (weight ratio) is 1/22 to 1/11. 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. )