JP2001097827A - Hair cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a stable hair cosmetic excellent in effects of impartment of pliability, smoothness, a moist feeling and a dry feeling to hair. SOLUTION: This hair cosmetic comprises (A) a cationic surfactant represented by the formula (1) (R1 denotes an 8-24C alkyl group or an 8-24C alkenyl group; R2 denotes a 1-5C alkylene group; R3, R4 and R5 denote each a 1-24C alkyl group, a 1-24C alkenyl group or a 1-24C hydroxyalkyl group; and X- denotes an anion) and (B) an amino-modified silicone. The pH of the hair cosmetic is <=4.5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention has good stability,
In addition, the present invention relates to a hair cosmetic excellent in the effects of imparting flexibility, smoothness, moist feeling, and dry feeling.

[0002]

2. Description of the Related Art A cation having a long-chain alkyl group such as stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, dicetyldimethylammonium chloride, etc. for imparting flexibility and smoothness to hair and protecting and styling the hair. Hair cosmetics containing a hydrophilic surfactant and an amino-modified silicone have been used. However, these hair cosmetics are not satisfactory in terms of storage stability, and in particular, hair cosmetics that do not have sufficient flexibility and smoothness at the time of rinsing and that can obtain higher effects are required. I have.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a hair cosmetic which has good stability and is excellent in imparting flexibility and smoothness.

[0004]

Means for Solving the Problems The present inventors have found that when a specific cationic surfactant (1) and an amino-modified silicone are used in combination, the stability is good and the flexibility is higher than before. It has been found that a hair cosmetic that can impart smoothness, a moist feeling and a dry feeling can be obtained.

The present invention relates to (A) a compound represented by the general formula (1):

[0006]

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(Where R¹Is a straight chain having 8 to 24 carbon atoms or
A branched alkyl or alkenyl group;^TwoIs charcoal
A linear or branched alkylene group having a prime number of 1 to 5;
^Three, R ^FourAnd R^FiveAre the same or different and have 1 to 24 carbon atoms
Linear or branched alkyl, alkenyl or hydrid
X represents a roxyalkyl group;^-Indicates an anion)
A cationic surfactant, and (B) an amino-modified
An object of the present invention is to provide a hair cosmetic containing a cone.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The cationic surfactant of the component (A) used in the present invention is represented by the general formula (1), wherein R ¹ has 12 to 22 carbon atoms. Especially 1 carbon
A linear or branched alkyl group or alkenyl group having 4 to 18 is preferable, and those having 16 carbon atoms are more preferable in terms of stability and performance. R ² is preferably an alkylene group having 1 to 3 carbon atoms, particularly a methylene group or an ethylene group. R ³ , R
⁴ and R ⁵ are preferably an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group, particularly preferably a methyl group, an ethyl group, a hydroxyethyl group or a hydroxypropyl group. X ^- include anions represented by the, Cl ^-, Br ^- halogen ion is preferable, such as, in particular Cl ^- is preferred.

Preferred specific examples of the cationic surfactant (1) include the following.

[0010]

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The cationic surfactant (1) of the component (A)
Can be used alone or in combination.
-15% by weight, especially 0.1-5% by weight, further 0.5-3%
It is preferable to mix by weight% in order to impart good stability and feel.

The amino-modified silicone of the component (B) used in the present invention includes, for example, those represented by the general formula (2).

[0013]

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R ⁹ and R ^{10 each} represent a hydrogen atom or a monovalent hydrocarbon group; c and d each represent an integer of 0 to 6; and Y ⁻ represents a halogen ion or an organic anion. Represents a group. a and b is an integer which depends on the molecular weight] in particular, wherein, R ⁶ is _{- (CH 2) 3 -NH- (} CH 2) 2 -NH
₂ , those having an average molecular weight of about 3000 to 100000 [Amodimethicone] are preferred.

The above-mentioned amino-modified silicone is preferably used as an aqueous emulsion. The aqueous emulsion can be prepared, for example, according to the method described in JP-B-56-38609 by using a cyclic diorganopolysiloxane and an organodiamine. It is obtained by emulsion polymerization of an alkoxysilane with a quaternary ammonium salt-based surfactant and water. When the amino-modified silicone is used as an aqueous emulsion, the amount of the amino-modified silicone contained in the aqueous emulsion is preferably 20 to 60% by weight, particularly preferably 30 to 50% by weight. As the amino-modified silicone aqueous emulsion,
Commercially available products such as SM8704C (manufactured by Dow Corning Silicone Toray Co., Ltd.) and DC939 (manufactured by Dow Corning) can be suitably used.

The amino-modified silicone of the component (B) comprises 1
Species or more can be used.
It is preferable to mix it in an amount of 0.05 to 5% by weight, particularly 0.1 to 3% by weight, in order to efficiently impart the feel unique to amino-modified silicone. The mixing ratio of the component (A) and the component (B) is (A) / (B) = 1/2 by weight ratio.
0 to 20/1, especially 1/10 to 10/1, further 1/3 to
5/1 is preferred in terms of stability.

The hair cosmetic composition of the present invention further comprises components used in ordinary hair cosmetic compositions, for example, cationic surfactants, anionic surfactants, and nonionic surfactants other than the component (A). And surfactants such as amphoteric surfactants; silicones, hydrocarbons, higher alcohols, lanolin derivatives, higher fatty acid esters, higher fatty acids, oils and fats, glycerin, betaine, humectants, cations other than component (B) Polymers, polysaccharides, polypeptides, pearling agents,
A solvent, a liquid crystal forming base, an aromatic sulfonic acid, a dye, a fragrance, a propellant, a chelating agent, a pH adjuster, an anti-dandruff agent and the like can be appropriately compounded.

The hair cosmetic of the present invention is produced by a conventional method, and it is preferable to adjust the pH to 4.5 or less, particularly to 3.0 to 4.0, because the stability is more excellent. To adjust the pH,
Organic acids such as citric acid and lactic acid, and inorganic acids can be used.
In addition, the hair cosmetic of the present invention can be in a desired form such as an aqueous solution, an ethanol solution, an emulsion, a suspension, a gel, a liquid crystal, a solid, or an aerosol, for example, a hair rinse, a hair conditioner, a hair treatment, a hair pack, It can be applied to hair cream, conditioning mousse, hair mousse, hair spray, shampoo, leave-on treatment and the like. In particular, it is suitable as a dosage form to be used after washing, such as a hair rinse, a hair conditioner, and a hair treatment.

[0019]

Industrial Applicability The hair cosmetic composition of the present invention has good stability and excellent effects of imparting flexibility, smoothness, moist feeling and dry feeling.

[0020]

EXAMPLES Example 1 Hair cosmetics (hair rinse, hair treatment) having the compositions shown in Tables 1 to 3 were produced, and the stability and performance when these were used were evaluated. The results are shown in Tables 1 to 3.

(Manufacturing method) (1) Manufacturing method 1: After the oil phase component is heated to 75 ° C and uniformly dissolved and dispersed, it is added to the aqueous phase component heated to 75 ° C with stirring. After sufficient stirring, the mixture was gradually cooled to 45 ° C. or lower while stirring, and an auxiliary component was added thereto and sufficiently stirred until the mixture became uniform to obtain a hair cosmetic.

(2) Production method 2: After the oil phase component is heated to 75 ° C. to uniformly dissolve and disperse, the aqueous phase component heated to 75 ° C. is added to the oil phase while stirring. After sufficient stirring, the mixture was gradually cooled to 45 ° C. or lower while stirring, and an auxiliary component was added thereto and sufficiently stirred until the mixture became uniform to obtain a hair cosmetic.

(Evaluation Method) (1) Stability: The condition when each hair cosmetic was put in a glass sample container and stored at 50 ° C. was visually evaluated according to the following criteria. ；: Uniformly dispersed after blending, no change in appearance even after storage for one month. Δ: Uniformly dispersed after mixing, but non-uniform and separated within 10 days after storage. X: A state in which the mixture is uneven and separated immediately after compounding.

(2) Performance: 20 g of hair (20 cm in length) of a Japanese woman who has not been subjected to chemical treatment such as cold perm
And washed with a commercially available shampoo mainly composed of an anionic surfactant (Ravinas Cotton Feel Shampoo, manufactured by Kao Corporation). Thereafter, 2.0 g of each hair cosmetic was uniformly applied, rinsed with running water at 40 ° C. for 30 seconds, and sufficiently dried using a dryer. In the above process, the flexibility and smoothness of the hair at the time of rinsing, and the moist feeling and the dry feeling after drying were sensory-evaluated by 10 expert panelists.
1 point for good points and 0 point for bad. 10
◎: Total score of 15 or more, ○: 6-14, ×: 5 or less
As shown.

[0025]

[Table 1]

[0026]

[Table 2]

[0027]

[Table 3]

* 1: HEC Daicel 850K (manufactured by Daicel Chemical Industries) * 2: Cosmall 168AR (manufactured by Nisshin Oil Co., Ltd.) * 3: KF-860 (manufactured by Shin-Etsu Chemical Co., Ltd.) * 4: SH200C-5000cs (manufactured by Toray Industries, Inc.) * 5: SM8704C (manufactured by Dow Corning Silicone Toray)

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4C083 AC012 AC072 AC122 AC182 AC302 AC352 AC582 AC691 AC692 AC712 AD152 AD161 AD162 AD282 BB06 BB53 CC33 CC39 DD23 DD27 EE06 4H003 AD04 AE06 BA12 DA02 EB04 EB08 EB09 EB37 FA22 FA28 FA21

Claims (2)

[Claims] (A) General formula (1)(Where R¹Is a linear or branched alkyl having 8 to 24 carbon atoms
A kill group or an alkenyl group;^TwoHas 1 to 5 carbon atoms
A linear or branched alkylene group;^Three, R ^Fouras well as
R^FiveAre the same or different and each have a straight or branched chain having 1 to 24 carbon atoms.
Branched alkyl, alkenyl or hydroxyalkyl
X represents^-Indicates a negative ion)
Surfactants and (B) amino-modified silicone
Having hair cosmetics. 2. The hair cosmetic according to claim 1, which has a pH of 4.5 or less.