JP2000053537A - Hair cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prepare a hair cosmetic capable of imparting smooth feeling, softness and at the same time moist finishing feeling to hair, and having excellent antiseptic property by compounding a specific amidoamine compound and a specific glycol. SOLUTION: This hair cosmetic is prepared by compounded (A) an amidoamine of the formula: R1CONH(CH2)XN(R2)2 [R1 is a residue of a 13-23C higher fatty acid; R2 is a 1-4C alkyl; (x)=2-4] (e.g. stearic acid dimethylaminopropylamide) preferably in an amount of 0.1-7.0 wt.%, more preferably 0.5-5.0 wt.% and (B) a glycol of the formula (R3 and R4 are each H or a 1-4C alkyl; R3 and R4 can not be H at the same time) (e.g. 3-methyl-1,3- butanediol) preferably in an amount of 0.1-60.0 wt.%, more preferably 0.5-30.0 wt.%, furthermore preferably 1.0-10.0 wt.%.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel hair cosmetic, and more particularly, to a hair having a smooth feel and flexibility and a moist finish.
The present invention relates to a hair cosmetic having excellent antiseptic properties.

[0002]

2. Description of the Related Art Conventionally, in hair cosmetics, a hair cleansing agent such as a shampoo has an anionic surfactant as a main component. The oil which protects the hair surface is also removed at the same time, so that the flexibility and gloss of the hair are lost and combing may be poor. For the purpose of preventing such adverse effects, hair treatment compositions such as cationic hair rinses, hair treatments, and hair conditioners are widely used. However, there has been a problem in that the quaternary ammonium salt alone cannot impart sufficient smoothness and moistness to the hair. In recent years, it has been found that a specific amidoamine compound can impart smoothness and flexibility to hair, and hair cosmetics containing an amidoamine compound have been proposed (JP-A-9-71515, JP-A-9-71515). -71516,
JP-A-9-71517). However, even these hair cosmetics are still insufficient in giving a moist feeling to hair. It is desired that the use of preservatives be reduced as much as possible from the viewpoint of safety, but there is a problem that it is difficult to obtain sufficient preservative power with a small amount of preservatives.

[0003] The present invention has been made in view of the above-mentioned conventional problems, and imparts smooth feel and flexibility to hair, imparts a moist finish, and has excellent antiseptic properties. An object of the present invention is to provide a hair cosmetic.

[0004]

Means for Solving the Problems As a result of diligent research, the present inventors have found that when a specific glycol is used in combination with a specific amidoamine compound, a moist finish feeling can be imparted, and a better finish can be obtained than when only the amidoamine compound is used. It has been found that hair cosmetics having further improved smoothness and flexibility and having antiseptic properties can be obtained, and have completed the present invention.

That is, the present invention is a hair cosmetic comprising an amidoamine compound represented by the following general formula (1) and a glycol represented by the following general formula (2).

[0006]

Embedded image R ¹ CONH (CH ₂ ) × N (R ² ) ₂ (1)

(Wherein, R ¹ represents a residue of a higher fatty acid having 13 to 23 carbon atoms, R ² represents an alkyl group having 1 to 4 carbon atoms, and x represents an integer of 2 to 4). )

[0008]

Embedded image

Wherein R ³ and R ⁴ are each a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, which may be the same or different, provided that R ³ and R 4 are different from each other. ^Four
Are not hydrogen atoms. )

The amidoamine compound represented by the general formula (1) used in the present invention is, specifically,
Stearic acid diethylaminoethylamide, stearic acid dimethylaminoethylamide, palmitic acid diethylaminoethylamide, palmitic acid dimethylaminoethylamide, myristic acid diethylaminoethylamide,
Myristic acid dimethylaminoethylamide, behenic acid diethylaminoethylamide, behenic acid dimethylaminoethylamide, stearic acid diethylaminopropylamide, stearic acid dimethylaminopropamide,
Examples thereof include diethylaminopropylamide palmitate, dimethylaminopropylamide palmitate, diethylaminopropylamide myristate, dimethylaminopropylamide myristate, diethylaminopropylamide behenate, and dimethylaminopropylamide behenate. Of these, dimethylaminopropylamide stearate and diethylaminoethylamide stearate are preferably used. In the present invention, one or more of these amidoamine compounds can be arbitrarily used.

The amount of the amidoamine compound is preferably 0.1 to 7.0% by weight, more preferably 0.5 to 5.0% by weight, based on the total amount of the hair cosmetic.
If it is less than 0.1% by weight, sufficient smoothness and flexibility cannot be imparted to the hair, while if it exceeds 7.0% by weight, the hair may be sticky.

Further, the glycol represented by the general formula (2) used in the present invention is, for example, 3-methyl-1,3-butanediol, 2-methyl-2,4-glycol.
Pentanediol (hexylene glycol), 2-methyl-2,4-octanediol, 3-ethyl-1,3-
Butanediol, 2-methyl-2,4-hexanediol, 3-methyl-1,3-pentanediol, 3-methyl-1,3-hexanediol, 3-methyl-4-dimethyl-1,3-pentanediol , 3-methyl-1,3
-Heptanediol and the like, in particular, 3-methyl-1,3-butanediol, 2-methyl-2,4-
Pentanediol and 3-ethyl-1,3-butanediol are preferred. These glycols may be used alone or in combination of two or more.

In the hair cosmetic composition of the present invention, the content of the glycol represented by the general formula (2) is usually 0.1 to 60.0% by weight, preferably 0.5 to 5% by weight based on the total weight of the hair cosmetic composition.
It is selected in the range of 30.0% by weight, more preferably 1.0 to 10.0% by weight. If the amount is less than 0.1% by weight, the intended effect is not sufficiently exhibited, and 60.0% by weight.
Beyond that, stickiness is unavoidable.

The hair cosmetic composition of the present invention may further contain, in addition to the above-mentioned essential components, various additive components conventionally used in hair cosmetic compositions, as long as the object of the present invention is not impaired.
Can be blended. Examples of the additive component include anionic surfactants, cationic surfactants, nonionic surfactants, amphoteric surfactants, highly polymerized silicone compounds, organic acids such as citric acid, succinic acid, and malic acid, and salts thereof. , Amino acids such as glycine, alanine and lysine, vinyl-based anionic polymers, cationic polymers, acrylic-based amphoteric polymers, nonionic polymers, fungicides,
Examples include higher alcohols, hydrocarbons, natural oils and fats, ester oils, coloring agents, fragrances, solvents (eg, ethanol and carbitol derivatives), polyhydric alcohols other than the components of the present invention such as ethylene glycol and glycerin, and fatty acids.
One of these additives may be used alone, or two or more of them may be used in combination, or may be blended at an appropriate stage of hair cosmetic preparation.

The hair cosmetic composition of the present invention can be widely used, for example, as a hair treatment, shampoo, hair rinse, hair conditioner, styling foam and the like.

[0016]

Next, examples of the present invention will be described, but they do not limit the technical scope of the present invention. Unless otherwise specified, the blending amount is% by weight.

Examples 1 to 8 and Comparative Examples 1 to 3 Hair cosmetics were prepared by the usual methods according to the formulations shown in the following Tables 1 to 3, and when applied to hair, smoothness, flexibility and moistness of the hair were obtained. The feeling was judged according to the following criteria. Further, the preservative power of each sample was determined according to the following criteria. Table 1 shows the results.
To Table 3 below.

(1) Criteria for judging smoothness After using each sample for one week by a specialized panel of 20 women,
The smoothness of the hair during and after use (after drying) was organoleptically evaluated. A: More than 18 people answered that there was a feeling of smoothness. B: 14 to 17 persons answered that there was a smooth feeling. C: 8 to 13 persons answered that there was a smooth feeling. D: Not more than 7 respondents felt smooth.

(2) Judgment Criteria for Flexibility After each sample was used for one week by a specialized panel of 20 women,
The flexibility of the hair during and after use (after drying) was organoleptically evaluated. A: More than 18 people answered that they were flexible. B: 14 to 17 persons answered that they were flexible. C: 8 to 13 persons answered that they were flexible. D: Less than 7 respondents said they were flexible.

(3) Judgment criteria for moist feeling After using each sample for one week by a professional panel of 20 women,
The moist feeling of the hair during and after use (after drying) was organoleptically evaluated. A: More than 18 people answered that they felt moist. B: 14 to 17 people answered that they felt moist. C: 8 to 13 respondents felt moist. D: Not more than 7 respondents felt moist.

(4) Criteria for judging antiseptic power A sample is dispensed into five 50 ml sample tubes in 30 g portions.
One sample is inoculated with 10 ⁵ to 10 ⁶ cfu of bacteria per gram, and changes in the number of bacteria are observed until 2 weeks have elapsed. As the inoculum strain, the following five bacteria are used. Bacteria: three species of Pseudomonas aeruginosa, Escherichia coli, and Staphylococcus aureus Yeast: Candida fungi Mold: blue mold If not recognized, almost no effect was recognized, and the overall judgment was made as follows.

Judgment Criteria The results obtained were classified into the following four criteria. A: The effect is immediately recognized. (The number of bacteria decreases by 99% after one week in five strains.) ：: The effect is gradually recognized. (The bacterial count is reduced by 99% after 2 weeks in 5 strains.) Δ: Almost no effect is observed. (The number of bacteria does not decrease by 99% after 2 weeks with one or more strains.) ×: No effect is observed at all. (One or more strains do not achieve a 90% reduction in bacterial count after two weeks.)

[0023]

[Table 1] {Example 1 2 3 4 5}ジ エ チ ル Diethyl stearate aminoethylamide 0.4 − − 0.1 − Dimethyl stearate aminopropylamide 0.4 1.0 2.0 − 0.5 Cetanol 1.5 1.5 1.5 1.5 1.5 Behenyl alcohol 1.5 1.5 1.5 1.5 1.5 Glycerin-----3-methyl-1,3-butanediol 1.0 3.0 3.0 3.0 3.0 3-Methyl-1,3-hexanediol-----2-Methyl −2,4-hexanediol − − − − − 2-methyl-2,4-pentanediol − − − − − 1,3-butylene glycol − − − − − citric acid 0.5 0.5 0.8 0.1 0.3 methyl paraben 0.3 0.3 0.3 0.3 0.3 Purified water residue residue residue residue residue residue滑 ら か Smooth feeling A A A B A Flexibility A A A B A Moist feeling ○ ◎ ◎ ◎ ◎ Antiseptic power ○ ◎ ◎ ◎ ◎ ─────────────────────────────────

[0024]

[Table 2] {Example 6 7 8}ジ エ チ ル Diethyl stearate amino ethyl amide 0.5 0.3 1.0 Dimethyl stearate 0.5 0.5 0.2 Cetanol 1.5 1.5 1.5 Behenyl alcohol 1.5 1.5 1.5 Glycerin---3-Methyl-1,3-butane Diol---3-methyl-1,3-hexanediol 5.0--2-methyl-2,4-hexanediol-3.5-2-methyl-2,4-pentanediol--4.0 1,3-butylene glycol- − − Citric acid 0.5 0.4 0.4 Methyl paraben 0.3 0.3 0.3 Purified water Residue Residue Residual 滑 ら か Smoothness A A A Flexibility A A A Moist feeling ◎ ◎ ◎ Preservative power ◎ ◎ ◎ ───── ─────────────────────

[0025]

[Table 3] Comparative Example 1 2 3ジ エ チ ル Diethyl stearate aminoethylamide 0.3 1.0-Dimethyl stearate aminopropylamide-1.0-Cetanol 1.5 1.5 1.5 Behenyl alcohol 1.5 1.5 1.5 Glycerin 1.0-1.5 3-Methyl-1,3-butane Diol--3.0 3-Methyl-1,3-hexanediol---2-Methyl-2,4-hexanediol---2-Methyl-2,4-pentanediol---1,3-butylene glycol 3.0 3.0-Citric acid 0.3 1.0 0.2 Methyl paraben 0.3 0.3 0.3 Purified water Residue Residue Residue ────────────────────────── Smoothness B B B Flexibility B BB Moist feeling × × × Preservative power △ △ ○ ────── ────────────────────

Example 9 Rinse (1) Dimethylpolysiloxane 5.0% by weight (2) Cetostearyl alcohol 2.5 (3) Octyl palmitate 3.0 (4) Hydroxyethylcellulose 0.1 (5) Lecithin 5 (6) Peptides 0.1 (7) Polyoxyethylene stearyl ether 0.1 (8) Dimethylaminopropylamide stearate 1.0 (9) 3-Methyl-1,3-butanediol 6.0 (10 ) Methylparaben 0.5 (11) Citric acid 0.5 (12) Water residue (Preparation method) Add (8), (9), (10), (11) to (12), heat to 80 ° C, 1) to (7) are mixed and also heated to 80 ° C. These are mixed, homogenized, and then cooled.

[0027]

As described above, according to the present invention, by including a specific glycol and a specific amidoamine compound, the hair can be given a smooth feel and flexibility, and a moist finish can be imparted. In addition, a hair cosmetic having excellent preservative properties can be obtained.

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Yoshio Asaga 1050 Nippa-cho, Kohoku-ku, Yokohama, Kanagawa Prefecture Inside Shiseido Daiichi Research Center Co., Ltd. Inside Shiseido Daiichi Research Center Co., Ltd. (72) Inventor Kyoko Inaba 1050 Nippa-cho, Kohoku-ku, Yokohama, Kanagawa Prefecture F-term inside Shiseido Daiichi Research Center Co., Ltd. 4C083 AC102 AC111 AC112 AC182 AC302 AC352 AC482 AC641 AC642 AD162 AD282 AD412 AD572 CC33 CC38 CC39 EE21 EE28

Claims (2)

[Claims] 1. A hair cosmetic comprising an amidoamine compound represented by the following general formula (1) and a glycol represented by the following general formula (2). R ¹ CONH (CH ₂ ) × N (R ² ) ₂ (1) (wherein, R ¹ represents a residue of a higher fatty acid having 13 to 23 carbon atoms, and R ² represents a residue of 1 carbon atom. Represents an alkyl group of 4 to 4, and x represents an integer of 2 to 4.) (In the formula, each of R ³ and R ⁴ is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and
They may also be different. However, neither R ³ nor R ⁴ is a hydrogen atom. ) 2. The compounding amount of the amidoamine compound is 0.
The hair cosmetic according to claim 1, wherein the amount of the glycol is 1 to 7.0% by weight, and the amount of the glycol is 0.1 to 60.0% by weight.