JP3318371B2 - Hair cosmetics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a novel hair cosmetic, and more particularly, to a novel hair cosmetic comprising a specific asymmetric quaternary ammonium salt or amine salt and a compound selected from urea and guanidine salts. The present invention relates to hair cosmetics such as a hair rinse, a hair conditioner, and a hair treatment, which have excellent properties, long lasting flexibility, and also have an excellent hardening effect on hard hair.

[0002]

2. Description of the Related Art Conventionally, in hair cosmetics, mono- or di-linear long-chain alkyl quaternary ammonium salts or mono- or di-branched long-chain alkyl quaternary ammonium salts have been used in order to improve the feel of the hair. And other surfactants. Also,
In recent years, various compounds have been used in combination with such a quaternary ammonium salt for the purpose of obtaining a better feel. That is, in order to impart smoothness to hair, various silicone derivatives may be used in combination (for example, see JP-A-1-11-1).
In order to impart good flexibility and moist feeling, oils and fats such as higher alcohols, glycerides, and liquid paraffin are used to soften hard and stiff hair and improve cohesiveness of hair. In order to improve the quality, fats and oils having a heavier feel are used in combination (for example, JP-A-61-267505).

[0003]

However, these conventional hair cosmetics have the drawback that the hair feels, that is, the moist feeling and smoothness which are conditioning effects are excellent, but the flexibility is insufficient. Was. The conventional method is to reduce the surface tension by imparting hydrophobic molecules to the hair surface to impart a soft feel to the hair, and these materials remaining on the hair surface come into contact over time in daily life. In addition, it is difficult to maintain the effect of softness continuously because the hair falls off due to the action of hair washing or the like. Hard hair often has poor cohesion due to the high elasticity of the hair,
With conventional superficial measures, it has been difficult to satisfy consumer demands. For this reason, there has been a demand for the development of a hair cosmetic that hardens hard hair continuously and improves the unity of the hair.

[0004]

Under these circumstances, the present inventors have conducted intensive studies in order to solve the above-mentioned problems, and as a result, a specific quaternary ammonium salt or amine salt as a cationic surfactant has By using a guanidine salt in combination, the hair, especially the stiff hair, maintains its softness continuously,
In addition, the present inventors have found that a hair cosmetic excellent in the effect of improving the unity of hair can be obtained, and completed the present invention.

That is, the present invention provides the following components (A) and (B) (A)

[0006]

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[Wherein, R ¹ represents a branched alkyl group having 8 to 28 carbon atoms, R ² represents a linear alkyl group or alkenyl group having 8 to 22 carbon atoms, and R ³ and R ⁴ represent Same or different, and represents an alkyl group having 1 to 4 carbon atoms or a hydrogen atom (however, unless both R ³ and R ⁴ are hydrogen atoms), and X is a halogen atom or an alkyl having 1 to 4 carbon atoms. Asymmetric quaternary ammonium salt or amine salt (hereinafter referred to as "asymmetric ammonium salt") represented by the formula:
The present invention provides a hair cosmetic selected from a hair rinse, a hair conditioner, and a hair treatment, which contains (B) a guanidine salt in an amount of 3 to 20% by weight.

The asymmetric ammonium salt of the component (A) in the present invention is a compound obtained according to a known method using a branched alcohol and a straight-chain amine as starting materials (JP-A-62-149648).

In the formula (1), the branched alkyl group represented by R ¹ is a group derived from a branched alcohol as a raw material, and specific examples thereof include 2- (3-methylhexyl) -7-
Derived from Guerbet alcohols or oxo alcohols such as methyl-1-decyl, 2- (1-methyl-3,3-dimethylbutyl) -5-methyl-7,7-dimethyloctyl, 2-hexyl-1-decyl And the like. Here, the Guerbet-type alcohol is generally represented by the following general formula (3)

[0010]

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Wherein n represents an integer of 1 to 14; The oxo-method alcohol is a general term for alcohols obtained by the oxo process using α-olefins as a raw material or alcohols obtained using the same as a raw material, for example, represented by the following general formula (4) or (5). Alcohol.

[0012]

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[In the formula (4), R ⁸ represents an alkyl group having 1 to 5 carbon atoms, and R ⁹ represents an alkyl group having 5 to 10 carbon atoms. However, the total number of carbon atoms of R ⁸ and R ⁹ is 10 to 11]

Specific examples of the alcohol which is a raw material for leading these alkyl groups include fine oxocols 140, 1600, 180 and 180 manufactured by Nissan Chemical Industries, Ltd.
N, 1800, 2000, 2600, decanol, tridecanol, manufactured by Mitsubishi Kasei Kogyo Co., Ltd., Diamond Doll 18
G, Methyl Ester 871 or 87, manufactured by Mitsubishi Yuka Co., Ltd., Dovanol 23-1, Exxon Chemical Co., Ltd., EXXAL18, EXXXAL20, Emery Co., Ltd. Isostearyl alcohol and the like can be mentioned.

Examples of the alkyl group represented by R ² include dodecyl, octadecyl and docosyl. Examples of the alkenyl group include cis-9-octadecenyl and cis-9-cis-12-octadecadienyl. , Cis-9-cis-12-cis-15-octadecatrienyl and the like. Examples of the alkyl group represented by R ³ and R ⁴ include a methyl group, an ethyl group, a trimethyl group, a propyl group, and a butyl group. And the like.

Further, among the counter ions of the asymmetric ammonium salts represented by X, halogen ions include chlorine, bromine and iodine, and alkyl sulfates include metsulfate and ethosulfate.

Preferred examples of the asymmetric ammonium salt of the component (A) in the present invention include N-2- (3-methylhexyl) -7-methyl-1-decyl-N-dodecyl-
N, N-dimethylammonium chloride, N-2-
(3-methylhexyl) -7-methyl-1-decyl-N
-Octyl-N, N-dimethylammonium chloride, N-2-hexyl-1-decyl-N-dodecyl-
Examples thereof include N, N-dimethylammonium chloride and those represented by the following general formula (6).

[0018]

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[In the formula, R ⁸ and R ⁹ have the same meanings as described above.] These compounds, when used as a hair rinsing agent, are excellent in flexibility, especially when the hair is dry.

In the present invention, the asymmetric ammonium salts of the component (A) can be used alone or in combination of two or more, and the total amount thereof is 0.01% in the total composition.
-20% by weight (hereinafter simply indicated as%), particularly 0.05-1
It is preferably set to 0%.

In the cosmetic of the present invention, a quaternary ammonium salt other than the above-mentioned component (A), for example, acetyltrimethylammonium chloride, stearyltrimethylammonium chloride, 2-dodecylhexadecyltrimethylammonium chloride, or a compound represented by the following general formula: Those represented by (7) can be used in combination.

[0022]

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[Wherein R ¹⁰ and R ¹¹ are the same or different and each represent an alkyl group having 8 to 16 carbon atoms and a branching ratio of 10 to 50%.] A quaternary ammonium salt other than the component (A) is used. When used, the amount is 0.05 to 0.05% in the total composition.
Preferably it is 20%.

Further, among the component (B) in the present invention,
Specific examples of guanidine salts include guanidine hydrochloride,
Inorganic acid salts such as sulfates, carbonates, phosphates, and nitrates; and organic acid salts such as acetates and citrates.

The amount of the guanidine salt of the component (B) is preferably 3 to 20% of the total composition.

The hair cosmetic composition of the present invention is further blended with an organic solvent [component (C)] represented by the following general formula (2) to promote the penetration of the hair cosmetic composition into the hair. The effect of the invention can be improved.

[0027]

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[0028] wherein, R ⁵ is a hydrogen atom, a lower alkyl group or a group ^{R 6 -Bz-R 7 - (} R 6 is a hydrogen atom, a methyl group or a methoxy group, R ⁷ represents a bond or a carbon 1 -3 represents a saturated or unsaturated divalent hydrocarbon group, Bz represents a p-phenylene group), Y and Z are the same or different and represent a hydrogen atom or a hydroxyl group, and p, q and r represent Each represents an integer of 0 to 5. Where p = q = r = 0 and Z
Is a hydrogen atom)

Specific examples of the organic solvent as the component (C) include:
Glycerin, 1,3-butylene glycol, propylene glycol, dipropylene glycol, ethylene glycol, diethylene glycol, diethylene glycol monoethyl ether, isopropyl alcohol, ethyl alcohol, benzyl alcohol, 2-benzyloxyethanol and the like, among which glycerin, Propylene glycol, 2-benzyloxyethanol and the like are preferred.

The hair cosmetic composition of the present invention contains higher alcohols having a linear or branched alkyl or alkenyl group, lanolin and lanolin derivatives, as long as the effects of the present invention are not impaired. Fats and oils such as esters, liquid paraffin, various silicone derivatives, long-chain amidoamines having alkyl or alkenyl groups, anti-dandruff agents, medicinal agents such as vitamins, preservatives such as parabens, thickening of water-soluble polymers and the like Agents, coloring agents such as dyes and pigments, conditioning agents such as cationic polymers, pearlizing agents such as glycol esters, hair setting polymers such as acrylic resin liquids, and various compounded fragrances.

The pH of the hair cosmetic composition of the present invention can be adjusted with an inorganic acid such as phosphoric acid and hydrochloric acid; an inorganic alkali such as sodium hydroxide; and an organic alkali such as triethanolamine, if necessary. , The pH in this case is 5%
It is preferable that the pH of the aqueous solution be 3 to 9.

The hair cosmetic composition of the present invention is prepared according to a conventional method, for example, by adding the above-mentioned components (A), (B) and, if necessary, component (C) and other optional components to heated water, and cooling while stirring. Can be prepared. Also, as the dosage form, an aqueous solution, an ethanol solution,
It can be in various forms such as emulsion, suspension, gel, liquid crystal, solid, aerosol and the like.

[0033]

Industrial Applicability The hair cosmetic composition of the present invention not only has a good feeling in use, but also gives the hair, especially hard hair, continuous softness and has excellent hair cohesion.

[0034]

Next, the present invention will be described with reference to examples, but the present invention is not limited to these examples. The test method used in this example is as follows.

(1) Sensory evaluation 25 g of thick hair (about 90 μm) of a Japanese woman who has not been subjected to beauty treatment such as cold perm until now (length: 1)
5 cm) was bundled and washed twice with shampoo. Then, 2.5 g of the agent was uniformly applied to the hair bundle and left for 10 minutes.
Subsequently, the plate was rinsed with running water for 30 seconds, dried with a towel, and then dried with a dryer. The hair bundle was evaluated for its softness, smoothness, and low degree of oiliness by feeling, and for hair clumps, visually, according to the following criteria. Flexibility: ；; very soft. ；: Soft. Δ: Neither hard nor soft. ×: Hard. Smoothness: ；; ○: Yes. Δ: Neither can be said. ×: No. Oiliness: ；; very little ；: Little. Δ: Neither can be said. ×: Many. Hair tie: A; very good. ○: Good. Δ: Neither can be said. ×; (2) Persistence of flexibility The hair bundle used for the evaluation of (1) was left for 24 hours in a thermo-hygrostat at 20 ° C. and 65% RH, and then subjected to sensory evaluation again as in (1). .

Example 1 A hair rinsing agent having the composition shown in Table 1 was prepared, and its rinsing performance was examined. Table 2 shows the results.

[0037]

[Table 1]

[0038]

[Table 2]

[0039]

[0040]

[0041]

[0042]

Example 2 A hair treatment composition having the composition shown in Table 3 was prepared. These imparted good flexibility to the hair.

[0044]

[Table 3]

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-267505 (JP, A) JP-A-56-22715 (JP, A) JP-A-63-222110 (JP, A) (58) Investigation Field (Int.Cl. ⁷ , DB name) A61K ⁷ /06-7/155

Claims (2)

(57) [Claims] 1. The following components (A) and (B): (A) the following general formula (1): [In the formula, R ¹ represents a branched alkyl group having 8 to 28 carbon atoms, R ² represents a linear alkyl group or alkenyl group having 8 to 22 carbon atoms, and R ³ and R ⁴ are the same or different. Represents an alkyl group having 1 to 4 carbon atoms or a hydrogen atom (provided that R
³ and unless both R ⁴ is hydrogen atom), X is one or quaternary ammonium salts or amine salts of asymmetric represented by an alkyl sulfate of 1 to 4 halogen atoms or C] A hair cosmetic selected from a hair rinse, a hair conditioner and a hair treatment, comprising 0.01 to 20% by weight or more of (B) a guanidine salt in an amount of 3 to 20% by weight. 2. The following component (C): (C) the following general formula (2): Wherein R ⁵ is a hydrogen atom, a lower alkyl group or a group R ⁶ -B
z-R ⁷ - (R ⁶ is a hydrogen atom, a methyl group or a methoxy group, R ⁷ represents a divalent hydrocarbon group having a saturated or unsaturated bond or a 1 to 3 carbon atoms, Bz is p- Y and Z are the same or different and each represents a hydrogen atom or a hydroxyl group, and p, q and r each represent an integer of 0 to 5. Provided that p = q = r = 0 and Z is not a hydrogen atom].