JP2002187821A - Hair cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hair cosmetic capable of imparting the hair with good conditioning effect without bringing about adverse effects including greasiness, and having a high in sustainability of the conditioning effect as well. SOLUTION: This hair cosmetic contains at least one ingredient selected from an acylcarnitine of the formula(1) (wherein, R is a 12-23C straight-chain or branched-chain alkyl or alkenyl) and salts thereof and at least one ingredient selected from 10-26C aliphatic alcohols.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cosmetic for hair which can impart an excellent conditioning effect to hair and which has excellent durability. More specifically, one or more selected from acylcarnitines having an acyl group having a specific chain length and salts thereof,
The present invention relates to a hair cosmetic comprising one or more selected from 0 to 26 aliphatic alcohols.

[0002]

2. Description of the Related Art In hair cosmetics, various conditioning agents are used to impart conditioning effects such as good smoothness, moist feeling and combability to hair. Examples of such conditioning agents include cationic polymer compounds such as cationized cellulose, cationic surfactants such as alkyltrimethylammonium chloride and dialkyldimethylammonium chloride, hydrocarbons, higher aliphatic alcohols, esters, and the like.
Oily components such as silicone oils have been used.

[0003] However, the cationic polymer compound and the cationic surfactant described above are not sufficiently adsorbed to the hair, are easily detached from the hair by rinsing or the like, and do not have sufficient durability of the conditioning effect. . In order to compensate for such a drawback, a combination of a cationic surfactant and an auxiliary component such as a higher aliphatic alcohol is used, but a gel having a layered structure formed by the cationic surfactant and the higher aliphatic alcohol is also used. Due to the interaction between the hydroxyl group of the higher aliphatic alcohol and the charged part of the quaternary ammonium, the adsorption power of the gel itself to the hair is weak,
The durability of the conditioning effect is not sufficient.

On the other hand, when an oily component is used, problems may occur, such as stickiness and difficulty in cleaning hair.

[0005]

SUMMARY OF THE INVENTION Accordingly, in the present invention, a hair cosmetic which is capable of imparting an excellent conditioning effect to hair without causing adverse effects such as stickiness or the like, and which is also excellent in durability of the conditioning effect. The purpose was to get a fee.

[0006]

As a result of various studies to solve the above-mentioned problems, one or more selected from the acylcarnitines represented by the formula (1) and salts thereof are combined with one having 10 to 26 carbon atoms. It has been found that by adding one or more selected from aliphatic alcohols in combination, a conditioning effect and a remarkable improvement in its sustainability can be obtained, and the present invention has been completed.

Embedded image (In the formula, R is a linear or branched alkyl group or alkenyl group having 12 to 23 carbon atoms.)

[0007] Cosmetic products for hair containing acylcarnitine have already been published in German Patent Application No. 1961.
No. 8671, and the use of dodecanoylcarnitine in combination with cetanol is also described. However, according to the present invention, the use of acylcarnitine having an acyl group having a specific chain length in combination with an aliphatic alcohol is also disclosed. The above effect is not suggested at all.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, as shown in the formula (1), acylcarnitine having 13 to 24 carbon atoms and having a linear or branched saturated or unsaturated acyl group; And its salts.

Embedded image (In the formula, R is a linear or branched alkyl group or alkenyl group having 12 to 23 carbon atoms.)

The acylcarnitines include O-tridecanoylcarnitine, O-tetradecanoylcarnitine, O-pentadecanoylcarnitine, O-hexadecanoylcarnitine, O-heptadecanoylcarnitine, O-octadecanoylcarnitine. , O-nondecanoylcarnitine, O-eicosanoylcarnitine, O-docosanoylcarnitine, O-tetracosanoylcarnitine, O-14-methylpentadecanoylcarnitine, O-2-heptylundecanoylcarnitine, O- 4-tetradecenoylcarnitine, O-
5-tetradecenoylcarnitine, O-9-tetradecenoylcarnitine, O-2-hexadecenoylcarnitine, O-cis-
7-hexadecenoylcarnitine, O-cis-9-hexadecenoylcarnitine, O-trans-9-hexadecenoylcarnitine, O-cis-6-octadecenoylcarnitine, O-trans-6-
Octadecenoylcarnitine, O-cis-9-octadecenoylcarnitine, O-trans-9-octadecenoylcarnitine, O-trans-11-octadecenoylcarnitine, O-cis-1
1-eicosenoylcarnitine, O-trans-11-eicosenoylcarnitine, O-cis-13-docosenoylcarnitine, O
-trans-13-docosenoylcarnitine, O-cis-15-tetracosenoylcarnitine, O-trans-15-tetracosenoylcarnitine, O-cis-9, cis-12-octadecadienoylcarnitine, O- trans-9, trans-12-octadecadienoylcarnitine, O-cis-9, cis-12, cis-15-octadecatrienoylcarnitine, O-5,8,11,14-eicosatetraenoylcarnitine, etc. And any of D-form, L-form and DL-form may be used.

[0010] The long-chain acylcarnitine used in the present invention as described above is characterized by the low solubility of carnitine in organic solvents and the low reactivity of the secondary hydroxyl group of carnitine. -Baumann
Although it is difficult to synthesize by a general esterification method such as a method or a transesterification reaction with long-chain fatty acid methyl, carnitine is dissolved in trichloroacetic acid and reacted with an acid chloride in the solution. Thus, a good yield can be obtained.

The acyl carnitine salts usable in the present invention include inorganic salts such as hydrochlorides, glycolates, acetates, lactates, pyrrolidone carboxylate, and the like.
Organic acid salts such as citrate, aspartate and glutamate can be mentioned. In consideration of solubility in an aqueous base, it is preferable to use a hydrochloride or an acetate.

In the hair cosmetic composition according to the present invention, one or more of the above-mentioned acylcarnitines and salts thereof are selected and blended. The compounding amount based on the total amount of the hair cosmetic is preferably 0.1 to 8.0% by weight.
If the amount is less than 0.1% by weight, a sufficient conditioning effect cannot be imparted. If the amount exceeds 8.0% by weight, a sticky feeling or a finished feeling may occur, which is not preferable. A particularly preferred blending amount is 0.7 to 5.0% by weight.

Next, in the cosmetic for hair according to the present invention, one selected from the above acylcarnitines and salts thereof.
As the aliphatic alcohol having 10 to 26 carbon atoms used in combination with the species or two or more species, any of linear and branched saturated aliphatic alcohols and unsaturated aliphatic alcohols can be used. It is preferable to use a primary alcohol.

Examples of the aliphatic alcohol include decanol, undecanol, dodecanol, tetradecanol, hexadecanol, octadecanol, eicosanol, docosanol, tetracosanol, hexacosanol, 2-hexyldecanol, 2-octyldodecanol, 9-octadecenol and the like are used, and one or more kinds are selected from these and used.

The amount of one or more of the above-mentioned aliphatic alcohols to be added to the total amount of the hair cosmetic composition according to the present invention is preferably 0.2 to 10.0% by weight.
If the amount is less than 0.2% by weight, a sufficient conditioning effect cannot be imparted. If the amount exceeds 10.0% by weight, a sticky feeling or a finished feeling may occur, which is not preferable. A particularly preferred blending amount is 2.0 to 8.0% by weight.

The cosmetic for hair according to the present invention mainly takes an emulsified dosage form, and is used for hair shampoo, hair rinse,
It can be provided as a hair treatment or the like.

The hair cosmetic composition according to the present invention contains oily components such as lower alcohols, other surfactants, hydrocarbon oils, ester oils, animal and vegetable oils, and silicone oils, as long as the characteristics of the present invention are not impaired. Humectants such as glycerin, propylene glycol, 1,3-butylene glycol, and polyethylene glycol; amino acids such as glycine; protein hydrolysates such as elastin, keratin, and collagen; and modified products thereof; cationized cellulose; Cationic polymer compounds such as polyglycol-polyamine condensates, anti-dandruff agents such as pyridoxine hydrochloride, salicylic acid, and zinc pyrithione; hop extracts, assembly extracts, capsicum tincture, hair growth components such as camphor; Fungicides such as photosensitizers,
Raw materials and additive components generally used for hair cosmetics, such as a pH adjuster, a bactericidal / antifungal agent, an antioxidant, an ultraviolet absorber, a chelating agent, a coloring agent, and a fragrance, can be contained.

[0018]

EXAMPLES Further, the features of the present invention will be described in detail with reference to examples.

The formulations of the hair rinses according to Examples 1 to 7 of the present invention are shown in Table 1 together with the formulations of Comparative Examples 1 to 7. The blending amounts in Table 1 are represented by weight%. These are prepared by mixing and heat-dissolving the component A in Table 1 to 70 ° C., adding it to the component B previously mixed, dissolved and heated to 70 ° C., emulsifying with a homomixer, and then cooling.

[0020]

[Table 1]

With respect to Examples 1 to 7 and Comparative Examples 1 to 7 of the present invention shown in Table 1, the conditioning effect on heat-damaged hair was evaluated. First, 20
5 g of hair bundles each having a length of 5 cm were dried under reduced pressure at 80 ° C. for 5 hours to obtain heat-damaged hairs, which were shampooed.
Apply 5 g each and spread evenly, 25 ° C, humidity 6
It was left still overnight at 5%. Then, the combability of the hair,
Sensory evaluation was performed for smoothness, moist feeling and flexibility. The organoleptic evaluation was as follows: “非常; very good”, “○; slightly good”, “同: comparable to that of heat-damaged hair that had only been shampooed and left standing overnight under the same conditions as above. Yes, ”and“ ×; bad ”. The results are shown in Table 2.

[0022]

[Table 2]

As is evident from Table 2, all the heat-damaged hairs to which the examples of the present invention have been applied are better than the heat-damaged hairs to which none has been applied in all items including combability. Was evaluated. In contrast, O-hexadecanoyl-DL-carnitine hydrochloride or
When O-octadecanoyl-DL-carnitine hydrochloride or Comparative Example 1 to Comparative Example 3 containing stearyltrimethylammonium chloride but not containing aliphatic alcohol was applied, the state of heat-damaged hair in each item Not improved, containing aliphatic alcohol, but O-hexadecanoyl-DL-carnitine hydrochloride, O-octadecanoyl-D
When Comparative Examples 4 and 5 containing neither L-carnitine hydrochloride nor stearyltrimethylammonium chloride were applied, deterioration of the hair condition was observed in all items. Further, when Comparative Examples 6 and 7 containing stearyltrimethylammonium chloride and an aliphatic alcohol were applied, a considerable conditioning effect was observed, but the results were not as good as when the respective examples were applied. Was enough.

Next, the formulation of another embodiment of the present invention will be described.

Example 8 Rinse-integrated shampoo (1) Hexadecanol 3.5 (% by weight) (2) Coconut oil fatty acid diethanolamide 4.0 (3) Dimethylpolysiloxane 0.5 (4) 2− Lauryl-N-carboxymethyl-N- 10.0 hydroxyethylimidazolinium betaine (5) O-tetradecanoyl-DL-carnitine acetate 6.0 (6) N-lauroyl-N-methyl-β-alanine sodium 1.0 (7) Stearyltrimethylammonium chloride 2.0 (8) Sodium benzoate 0.1 (9) Purified water 72.8 (10) Fragrance 0.1 Production method: Oil phase components of (1) to (3) , Heat and dissolve at 70 ° C
And On the other hand, the aqueous phase components (4) to (9)
The mixture is heated to 0 ° C., and the oil phase component is added thereto and emulsified by a homomixer. After cooling, add (10) at 40 ° C and mix.

Example 9 Hair rinse (1) Hexadecanol 2.0 (% by weight) (2) Octadecanol 2.0 (3) Jojoba oil 0.5 (4) Glyceryl monostearate 0 (5) Cetyl 2-ethylhexanoate 1.5 (6) O-octadecanoyl-DL-carnitine hydrochloride 1.5 (7) 1,3-butylene glycol 7.0 (8) Methyl paraoxybenzoate 0 .1 (9) Purified water 84.3 (10) Fragrance 0.1 Production method: The oil phase components (1) to (5) are mixed, heated and dissolved, and
And On the other hand, the aqueous phase components (6) to (9)
The mixture is heated to 0 ° C., and the oil phase component is added thereto and emulsified by a homomixer. After cooling, add (10) at 40 ° C and mix.

Example 10 Hair Treatment (1) Liquid paraffin 15.0 (% by weight) (2) Vaseline 10.0 (3) Beeswax 2.0 (4) Octadecanol 3.0 (5) Docosanol 2 0.0 (6) O-hexadecanoyl-DL-carnitine hydrochloride 2.5 (7) O-docosanoyl-DL-carnitine hydrochloride 0.5 (8) Glycerin 5.0 (9) Carboxyvinyl polymer 0.1 (10) Xanthan gum 0.1 (11) Disodium ethylenediaminetetraacetate 0.1 (12) Methyl parahydroxybenzoate 0.1 (13) Purified water 54.5 (14) 1.0% by weight aqueous sodium hydroxide solution 0 (15) Fragrance 0.1 Production method: Mix and heat dissolve the oil phase components of (1) to (5),
And On the other hand, the aqueous phase components (6) to (13) are mixed and dissolved, heated to 70 ° C., and the oil phase component is added thereto and emulsified by a homomixer. After cooling, add (14) and (15) at 30 ° C and mix.

With respect to the above-mentioned Examples 8 to 10, a use test was conducted using 20 female panelists as one group. In this case, Comparative Example 8, Comparative Example 10, Comparative Example 12 in which all of the acylcarnitine salts contained in each Example were replaced with stearyltrimethylammonium chloride, and Comparative Example 9 in which all of the aliphatic alcohols were replaced with squalane. , Comparative Example 11 and Comparative Example 13 were simultaneously tested.

In the use test, each sample of each of Examples 8 to 10 and Comparative Examples 8 to 13 was blindly used by each group, and after use, the hair had combability, smoothness, and moist feeling. , Rustiness, stickiness and continuity of the conditioning effect were evaluated by sensory evaluation. The evaluation results were scored according to the evaluation criteria shown in Table 3, and the average value of 20 persons was calculated and shown in Table 4.

[0030]

[Table 3]

[0031]

[Table 4]

As is evident from Table 4, in the group using the example of the present invention, almost all good or good evaluations were obtained for the above evaluation items in all the groups. On the other hand, each sample use group of Comparative Example 8, Comparative Example 10, and Comparative Example 12 in which the acylcarnitine salt was replaced with stearyltrimethylammonium chloride, and Comparative Example 9, Comparative Example 11, in which the aliphatic alcohol was replaced with squalane In each sample use group of Example 13, the evaluation of each evaluation item was lower than that of the corresponding Example use group. In particular, in the groups using Comparative Examples 11 and 13, considerable stickiness was recognized.

[0033]

As described above in detail, according to the present invention, an excellent conditioning effect can be imparted to hair without causing any adverse effects such as stickiness and the like, and the conditioning effect for hair is also excellent. Cosmetics could be obtained.

Continued on front page F-term (reference) 4C083 AA082 AA122 AB032 AB052 AC012 AC022 AC071 AC072 AC122 AC312 AC352 AC392 AC482 AC532 AC642 AC662 AC691 AC692 AC712 AD092 AD152 AD352 CC33 CC38 CC39 DD23 EE06 EE28

Claims (1)

[Claims] 1. One or two or more selected from the acylcarnitines represented by the formula (1) and salts thereof, and one having 1 carbon atom.
A hair cosmetic comprising one or more selected from 0 to 26 aliphatic alcohols. Embedded image (In the formula, R is a linear or branched alkyl group or alkenyl group having 12 to 23 carbon atoms.)