JPH0362686B2 - - 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 "moisture feeling" 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, synthetic detergents, etc., these oil and fat components are removed more than necessary.
As a result, the hair after washing loses its smoothness, becomes dry and hard, 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 ammonium salts such as dialkyldimethylammonium chloride and alkyltrimethylammonium chloride as the main active ingredient. There are two types of ammonium salts: those that are poorly soluble in water and those that are easily soluble in water.Therefore, hair cosmetics are divided into ``rinsing type'' and ``non-rinsing type''. This makes their usage patterns 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. but,
Conventional hair cosmetics, no matter how they are used,
There were problems with the releasability and adsorption of the ammonium salt, and it could not be said to be satisfactory. 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. Furthermore, with the recent trend towards natural products, there has been a growing trend to seek safer products. An object of the present invention is to provide a hair cosmetic that has excellent effects in imparting "combability,""smoothness," and "moisture feel" to hair. The object of the present invention is to provide a hair cosmetic containing 0.1 to 10% by weight of mono-N-long chain acyl basic amino acid lower alkyl ester salt and 0.1 to 10% by weight of natural oil or amino acid. achieved by. Hereinafter, the hair cosmetic of the present invention will be explained in more detail. The lower alkyl ester salt of a mono-N-long chain acyl basic amino acid, which is the first essential component of the hair cosmetic of the present invention, is prepared using basic amino acids such as ornithine, lysine, and arginine as raw materials, for example, It can be easily produced by the method described in No. 11926 or Japanese Patent Publication No. 43-9529. In addition, as the basic amino acid component of the mono-N-long chain acyl basic amino acid lower alkyl ester salt, in addition to natural amino acids such as ornithine, lysine, and arginine, synthetic amino acids such as α,γ-diaminobutyric acid can also be used. . These may be optical bodies or racemic bodies. The acyl group of the mono N-long chain acyl basic amino acid lower alkyl ester salt is a saturated or unsaturated natural or synthetic fatty acid residue having 8 to 22 carbon atoms, such as lauroyl group, myristoyl group, palmitoyl group, stearoyl group. In addition to single fatty acid residues such as these, it may also be natural mixed fatty acid residues such as coconut oil fatty acid residues and beef tallow fatty acid residues. The lower alkyl ester component of the mono N-long chain acyl basic amino tri-lower alkyl ester salt includes methyl ester, ethyl ester, propyl ester, butyl ester, pentyl ester,
Hexyl esters, heptyl esters, octyl esters are suitable. Salts of mono N-long chain acyl basic amino acid lower alkyl esters include inorganic acid salts such as hydrochloride, sulfate, or for example acetate, tartrate, citrate, p-toluenesulfonate, fatty acid Salts, acidic amino acid salts, organic acid salts such as pyrrolidone carboxylates are used. Among these, acidic amino acid salts, hydrochloride, and L and DL
-Pyrrolidone carboxylic acid salts are preferred. The amount of the mono N-long chain acyl basic amino acid lower alkyl ester salt added to the hair cosmetic is 0.1 to 10% by weight, preferably 0.2 to 5% by weight. Examples of the natural oil that is one of the second essential ingredients of the present invention include apricot kernel oil,
Pristane, squalane, mink oil, egg yolk oil, olive oil, grapeseed oil, wheat germ oil, almond oil, camellia oil, jojoba oil, sunflower oil,
Soybean oil, sasanqua oil, corn oil, linseed oil, avocado oil, higher fatty acids and mixtures thereof can be used. Among these, mink oil, soybean oil, egg yolk oil, squalane, camellia oil, stearin oil, jojoba oil, sasanqua oil,
Linseed oil and avocado oil are preferred. Examples of the other amino acid as the second essential component of the present invention include glycine, valine, isoleucine, serine, threonine, phenylalanine,
Examples include tryptophan, cysteine, proline, aspartic acid, histidine glutamate, arginine, lysine, etc. Preferred amino acids are acidic or neutral amino acids such as glycine, isoleucine, proline, histidine, and cysteine. These amino acids can be used in the L or DL form. It is possible to use one or more of these. In addition to free amino acids, alkali metal salts such as sodium salts, alkaline earth metal salts such as magnesium salts, or inorganic acid salts such as hydrochloric acid are preferably used as these amino acids. The blending amount of these natural oils or amino acids is 0.1 to 10% by weight, preferably 0.1 to 5% by weight, based on the total hair cosmetic composition of the present invention. In addition to the above-mentioned essential ingredients, the cosmetic of the present invention may contain the following quality ingredients within a range that does not affect the effects of the present invention. That is, optional components include hydrocarbons such as liquid paraffin, vaseline, solid paraffin, and olefin oligomer; isopropyl myristate, isopropyl palmitate, stearyl stearate, octyldodecyl myristate, octyldodecyl oleate, and 2-ethylhexanoic acid. Esters such as triglyceride; Emulsifiers such as polyoxyethylene cetyl ether, polyoxyethylene stearate, and polyoxyethylene sorbitan monolaurate; benzalkonium chloride, cetyltrimethylammonium chloride, cetostearyltrimethylammonium chloride, stearyltrimethylammonium chloride, Cationic surfactants such as behenyltrimethylammonium chloride and distearyldimethylammonium chloride; N-(2-hydroxyethyl)-N-[bis(2-carboxyethyl)aminoethyl] laurylamide disodium salt, 2-cocoyl-N −
Amphoteric surfactants such as carboxymethyl-N-hydroxyethylimidazolium betaine; anionic surfactants such as higher alcohol sulfates, alcohol ether sulfates, α-olefin sulfonates; lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, etc. Higher alcohols; higher fatty acids such as palmitic acid, stearic acid, and behenic acid; humectants such as ethylene glycol, propylene glycol, 1,3-butylene glycol, glycerin, and sorbitol; and other small amounts of ingredients such as solvents, preservatives, and fragrances. It is. The hair cosmetic composition of the present invention can be used in the form of various hair treatment agents such as a hair rinse, a spray-type or dispenser-type hair conditioner, and a hair lotion. The hair cosmetic of the present invention provides excellent combing smoothness and moisturizing feeling to the hair, whether it is applied to either the "rinsing type" or the "non-rinsing type". 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 adopted in each example will be explained. Test method: Apply 0.5g of sample directly to a shampooed hair bundle (5g, 20cm), 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 feel'' of the hair tresses. The evaluation is a 5-level evaluation based on the evaluation obtained using a sample consisting of 1.0% by weight stearyltrimethylammonium chloride, 3% by weight cetyl alcohol, 10% by weight propylene glycol, and water (the balance). Five-point evaluation ◎: Good ○: Fairly good △: (Basic) Equal ×: Slightly inferior XX: Inferior In each example, all blending amounts are shown in weight %. Test Example 1 Thirty-two types of hair cosmetics having the compositions shown in Tables 1 and 2 were prepared and their performance was tested. The results are shown in the same table.

【table】

[Table] As is clear from Table 1, Comparative Example 1
- Comparative Example 2 does not contain both long-chain acyl basic amino acid lower alkyl ester salt and natural oil; Comparative Example 2 does not contain natural oil;
Since No. 9 does not contain a mono-N-long chain acyl basic amino acid lower alkyl ester salt, it cannot impart excellent combability and moisturizing feeling to the hair. In contrast, Examples 1 to 1 of the present invention
7 indicates an excellent effect.

【table】

[Table] As is clear from Table 2, Comparative Example 10 has mono-N
-Comparative Example 11 does not contain both the long chain acyl basic amino acid lower alkyl ester salt and the amino acid, so Comparative Example 12 does not contain the amino acid.
Since No. 14 does not contain a mono-N-long chain acyl basic amino acid lower alkyl ester salt, it does not exhibit satisfactory effects on imparting "combability", "smoothness" and "moist feeling". In contrast, Examples 8 to 13 of the present invention show satisfactory effects. Test Example 2 Eight types of hair cosmetics containing varying amounts of mono-N-long chain acyl basic amino acid lower alkyl ester salt and amino acid were prepared and tested for performance.
The results are shown in Table 3.

[Table] As is clear from Table 3, comparative examples in which the blending amount of mono N-long chain acyl basic amino acid lower alkyl ester salt and amino acid is outside the range of the present invention.
10, 11, 12 and 13 cannot achieve the purpose of the present invention. Example 20 Hair treatment compositions shown in Table 4 were prepared and their performance evaluated.

【table】

[Table] This hair treatment agent has excellent "combability", "smoothness" and "moisture feeling" on the hair.
The effect of the addition was shown. Examples 21 and 22 Hair cream compositions having the compositions shown in Tables 5 and 6 were prepared and their performance was evaluated.

【table】

【table】

[Table] The hair cream composition of this invention has superior "combability" and "smoothness" compared to conventional hair creams.
It also showed the effect of imparting a "moist feeling". Example 23 Ezoar type hair conditioner having the composition shown in Table 7 was manufactured and its performance was evaluated.

[Table] This hair conditioner exhibited excellent ``combability'', ``smoothness'', and ``moisture feeling'' effects not found in conventional hair conditioners.

Claims (1)

[Claims] 1. A hair cosmetic containing 0.1 to 10% by weight of a mono-N-long chain acyl basic amino acid lower alkyl ester salt and 0.1 to 10% by weight of one or more natural oils or amino acids.