JPS628103B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a hair cosmetic that has excellent effects in imparting combability 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 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 excellent combability and moisturizing feeling to hair when applied to both rinsing type and non-rinsing type. The purpose is to provide That is, the hair cosmetic of the present invention contains 0.1 to 3 quaternary ammonium salts represented by the following general formula ().
Weight% and compound represented by the following general formula ()
Contains 0.1 to 3% by weight and a higher alcohol having 16 to 22 carbon atoms as essential components, and ()/
() (weight ratio) is 1/3 to 3/1, () +
()/Higher alcohol (weight ratio) is 1/2.5~
It is characterized by being 1/6. 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 is an alkyl group having 15 to 21 carbon atoms, and X is a halogen atom, a hydroxyl group, or an alkyl sulfate group in which the alkyl group has 1 or 2 carbon atoms.) The amount of the quaternary ammonium salt, which is 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.
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 compounding amount of the second essential component represented by the above general formula () is based on the total amount of the hair cosmetic.
0.1 to 3.0% by weight, preferably 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. Palmitoylcholine, stearoylcholine, eikolylcholine, docosoilcholine, hydrogenated beef tallow alkaroylcholine, hydrogenated rapeseed oil, alkaroylcholine, palmitoylcholine chloride, stearoylcholine chloride, eicosoilcholine chloride, docosoilcholine chloride, hydrogenated Beef tallow alkaloylcholine chloride, hydrogenated rapeseed oil alkaloylcholine chloride, hydrogenated beef tallow alkaloylcholine bromide, hydrogenated rapeseed oil alkaloylcholine bromide, hydrogenated beef tallow alkaroylcholine methyl sulfate, hydrogenated rapeseed oil alkaloylcholine methyl Sulfate. What is particularly important about the second essential component of the present invention is that R in the above general formula () is a _C15-21 alkyl group, and if it is less than _C15 , water solubility increases. The feeling of being hydrated deteriorates significantly. In addition, when _C22 is exceeded, hydrophobicity increases, so
The moist feeling increases and stickiness occurs, which is undesirable. Stearoylcholine chloride, which is an example of the second essential component of the present invention Industrially, for example, stearic acid is heated to high temperature (approximately
180℃), dimethylethanolamine was added dropwise into this to obtain stearoyldimethylethanolamine, and then after removing water under reduced pressure,
Obtained by quaternization using methylene chloride. 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 to 1.5/1
It is. ()/() is less than 1/3,
Or, if it exceeds 3/1, the effects of the present invention cannot be obtained. The third essential ingredient of the hair cosmetic of the present invention is:
It is a higher alcohol with 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
A higher alcohol mixture with a weight ratio of 3/1 to 1/1, a C ₁₆ /C ₁₈ /C ₂₂ (weight ratio) of 6/2/
A mixture of higher alcohols having a ratio of 1 to 4/3/2 is preferred. In the hair cosmetic of the present invention, the weight ratio of the total amount of the quaternary ammonium salt () and the compound () to the higher alcohol must be within the range of 1/2.5 to 1/6. A particularly preferable range is 1/
It is 2.5 to 1/4. If the content of ()+()/higher alcohol is less than 1/6, the moist feel and smoothness will be poor, and if it exceeds 1/2.5, the combability and softness will be poor. 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; 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 0.5g of the sample directly to a shampoo-treated hair bundle (5g, 20cm), spread it evenly by hand, dry it in an atmosphere of 25℃ and 65%RH, and leave it overnight. The combability and moisturizing feeling were sensory evaluated by 20 panelists. The evaluation was performed on a five-point scale based on the evaluation obtained with a sample (Comparative Example 1) consisting of 1.0% by weight stearyltrimethylammonium chloride, 5.0% by weight propylene glycol, and water (remainder). ◎: Good 〇: Slightly good △: (Standard) equivalent ×: Slightly inferior ××: Inferior Test example 1 Sixteen types of hair cosmetics having the compositions shown in Table 1 were prepared, and their performance (combability and A feeling of warmth) was tested. The results are shown in the same table. In addition,
The blending amount is in weight% (the same applies to other test examples).

[Table] As is clear from Table 1, combinations other than those of mono C ₁₈ alkyl quaternary ammonium salt (*1), C ₁₈ alkaroylcholine chloride (*4) and higher alcohol (*5) (Example 1) It can be seen that all of the compositions (Comparative Examples 1 to 15) have insufficient combability and moisturizing feeling. Test Example 2 7 with different weight ratios of mono C ₁₈ alkyl quaternary ammonium salt and C ₁₈ alkaloylcholine chloride
We prepared various hair cosmetics and tested their performance. The results are shown in Table 2.

【table】

[Table] As is clear from Table 2, when the weight ratio of mono C ₁₈ alkyl quaternary ammonium salt to C ₁₈ alkaloylcholine chloride is 1/3 to 3/1, both exhibit excellent performance. I understand. Test Example 3 Five types of hair cosmetics were prepared with varying weight ratios of cationic components (mono C ₁₈ alkyl quaternary ammonium and C ₁₈ alkyl choline chloride) and higher alcohol, and their performance was tested. The results are shown in Table 3 below.

[Table] As is clear from Table 3, cation components (mono-
It can be seen that when the weight ratio of C ₁₈ alkyl quaternary ammonium salt and C ₁₈ alkaloylcholine chloride to higher alcohol is 1/6 to 1/2.5, both exhibit excellent performance. Test Example 4 Three types of hair cosmetics were prepared using alkaroylcholine chlorides with different fatty acid carbon chain lengths instead of _C18 alkaloylcholine chloride, and their performance was tested. The results are shown in Table 4.

【table】

[Table] As is clear from Table 4, the composition (Comparative Example 20) in which the fatty acid residue of compound () is outside the range of the present invention (Examples 10 and 11) has poor combability and moist feeling. It turns out that it is insufficient. Test Example 5 A hair rinse composition having the composition shown in Table 5 below was manufactured and its performance was evaluated. Performance evaluation is
Hair (8.5 g, 20 cm) was immersed in 200 ml of a 20% diluted hair rinse composition at 40°C for 5 seconds, and then soaked at 40°C.
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 5, the hair rinse composition of the present invention has better combability and moisturizing feel than conventional hair rinse compositions. Test Example 6 A hair cream composition having the formulation shown in Table 6 below was manufactured and its performance was evaluated.

[Table] The hair cream composition of the present invention had excellent combability and the effect of imparting a damp feeling, which conventional hair creams do not have.

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 compound represented by the following general formula (), and a compound having 16 to 16 carbon atoms.
Contains 22 higher alcohols as essential ingredients,
and ()/() (weight ratio) is 1/3 to 3/1
A hair cosmetic characterized in that ()+()/higher alcohol (weight ratio) is 1/2.5 to 1/6. 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 represents an alkyl group having 15 to 21 carbon atoms, and X represents a halogen atom, a hydroxyl group, or an alkyl sulfate group whose alkyl group has 1 or 2 carbon atoms.)