JPH09286711A - Hair cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a cosmetic excellent in effect imparting natural gloss to hair, not sticking, improving to neaten hair, capable of preventing and repairing damage of hair and useful for hair rinse, treatment, etc., by blending specific compounds in specific amounts. SOLUTION: This hair cosmetic is obtained by blending 0.01-10wt.% water- insoluble polymer fine particles (component A) having >=0.2μm and <1μm average particle diameter with 0.001-20wt.% cationic compound (component B). The component A includes fine particles of a polymer such as a silicone resin, an alkyl methcrylate polymer and the component B includes a quaternary ammonium salt, a poly(dimethyldiryl ammonium halide) type cationic polymer, a copolemter type cationic polymer of a dimethyldiallylammonium halide and an acrylamide.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair cosmetic composition which has an excellent effect of imparting natural gloss to hair, improves the cohesiveness of hair, and can prevent and repair damage to hair. About.

[0002]

2. Description of the Related Art Hair cosmetics are strongly required to have properties such as imparting luster to hair and improving hair cohesion. Conventionally, in order to impart gloss to hair, a styling agent containing an oil agent or a polymer has been used, and a method of coating the hair with an oil agent or a polymer to increase the light reflection intensity has been performed. However, in this method, the reflected light of the completely covered portion may be very high, exhibiting an intensity several times that of the original hair, and may be felt unnatural in appearance. In addition, the coating may be incomplete and the agent may adhere in a lump, but in that case the reflected light will rather decrease, and in any case, the texture will differ from the original gloss of the hair, resulting in an unnatural appearance turn into. In addition, there was also a problem in terms of feel and appearance, such as stickiness, hair bundles, and a dirty appearance due to the oil agent or polymer film.

In order to improve the cohesiveness of the hair, a method of blending an oil agent or silicone with a shampoo, a hair rinse, a treatment, a styling agent, etc. and adsorbing them onto the hair has been used. There was a problem that the feeling became bad, such as the whole being sticky.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a hair cosmetic which is excellent in imparting natural luster to hair and can improve the cohesiveness of hair. .

[0005]

Under such circumstances, as a result of intensive studies by the present inventors, a hair cosmetic containing specific water-insoluble polymer fine particles and a cationic compound was found to have a natural luster to the hair. The present invention has been completed based on the finding that it is possible to improve the hair cohesion without sticking the hair, as well as being excellent in the effect of imparting hair.

[0006] Each hair fiber is covered with a layer of cuticle-shaped scaly cells which are superposed in a plate shape. This cuticle usually overlaps 5 to 10 layers of human hair, but the outermost layer is partially exposed to the outside. Out of the exposed portions, the outer peripheral portion of the cuticle cell forms an angle almost perpendicular to the hair axis.
Hereinafter, this portion is referred to as an edge. Also, except for the outer periphery, it makes a gentle angle of about 5 ° to the hair axis,
Hereinafter, this portion is referred to as a cuticle flat portion. Most of the exposed area is the cuticle flat portion.

The present inventor can selectively adsorb many of the particles to the edge portion of the cuticle when the hair is treated with a hair cosmetic containing fine particles having an appropriate particle size and surface potential. I found that. At this time, by incorporating a cationic compound such as a cationic surfactant or a cationic polymer in the hair cosmetic composition, the surface potential of the particles can be controlled within an appropriate range, and the squeaky feeling and hair caused by the incorporation of the particles, hair. It is possible to suppress the feeling of becoming hard and to maintain a good feeling of use as a hair cosmetic composition.

Further, the height of the edge portion (0.2 to 1 μm
The use of fine particles having a particle size comparable to that of the above) can reduce the steep angle of the edge portion by adsorbing the fine particles to the edge, improve the smoothness of the hair fiber, and achieve an improvement in gloss and cohesion. I found it. In this case, the luster does not cover the entire hair like oil or polymer, but the cuticle flat part that occupies most of the surface area of the hair is left as it is, only the angle of the edge part is relaxed, so the hair The intensity of the reflected light when irradiated with light is not increased to an unnatural level, and the original natural gloss of the intended hair can be obtained. In addition, there is no drawback in the conventional glossing technique in which the touch is deteriorated due to film formation and the hair sticks into a bundle.

That is, the present invention comprises the following components (A) and (B): (A) 0.001 to 10% by weight of water-insoluble polymer fine particles having an average particle size of 0.2 μm or more and less than 1 μm, (B) cationic A hair cosmetic containing 0.001 to 20% by weight of a compound is provided.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Examples of the water-insoluble polymer particles of the component (A) used in the present invention include, for example, silicone resin, methacrylic acid alkyl ester polymer, acrylic acid alkyl ester polymer, styrene-divinylbenzene copolymer. And fine particles of polymers such as copolymers of these with a polymerizable monomer capable of polymerizing and chitosan-methacrylic acid copolymers.

Of these, silicone resins include:
A water-insoluble silicone resin having a structure cross-linked three-dimensionally by a siloxane bond can be used. For example, Tospearl manufactured by Toshiba Silicone, KMP59 manufactured by Shin-Etsu Chemical Co., Ltd.
0, and commercially available products such as Toray Dow Corning's Trefill R.

Further, the alkyl methacrylate constituting the alkyl methacrylate polymer includes
Methyl methacrylate, ethyl methacrylate, propyl methacrylate, n-butyl methacrylate, n-methacrylate
-Hexyl, n-octyl methacrylate, 2-ethylhexyl methacrylate, n-lauryl methacrylate and the like. Similarly, as the alkyl acrylate constituting the alkyl acrylate polymer, methyl acrylate, ethyl acrylate, propyl acrylate, n-butyl acrylate, n-hexyl acrylate,
Examples thereof include n-octyl acrylate, 2-ethylhexyl acrylate, and n-lauryl acrylate. As the methacrylic acid alkyl ester polymer, polymethyl methacrylate, polyethyl methacrylate and the like are preferable,
Particularly, polymethyl methacrylate is preferred. As the alkyl acrylate polymer, polymethyl acrylate, polyethyl acrylate, and the like are preferable.

These water-insoluble polymer fine particles need to have an average particle size of not less than 0.2 μm and less than 1 μm, preferably from 0.3 to 0.9 μm. 0.2 μm
If it is less than 1 μm, a sufficient smoothness-improving effect cannot be obtained, and if it is 1 μm or more, the number of fine particles adsorbed on the hair decreases, the smoothness cannot be improved, and the hair cannot have sufficient gloss and cohesion.

The shape of the fine particles is not particularly limited, and may be spherical, amorphous, flat, plate-like, and the structure thereof may be hollow structure, porous structure or the like. Further, fine particles which have been subjected to a chemical treatment for imparting surface modification or porosity, or a chemical treatment for imparting oil absorbing ability or water absorbing ability can also be used.

These fine particles may be used alone or in combination of two or more.

In the hair cosmetic composition of the present invention, these water-insoluble polymer fine particles are contained in an amount of 0.001-10 in the total composition.
% By weight, preferably 0.01 to 5% by weight.
If the content is less than 0.001% by weight, a sufficient effect cannot be obtained.
When the amount is more than the weight%, it is not preferable because the blemishes and the hardness appear and the feel of the hair deteriorates.

Examples of the cationic compound as the component (B) used in the present invention include cationic surfactants and cationic polymers.

Examples of the cationic surfactant include quaternary ammonium salts represented by the following general formulas (1) and (2).

[0019]

Embedded image

Where R¹, R^Two, R^ThreeAnd R^FourHorse
Wherein at least one is an alkoxy having 8 to 28 carbon atoms in total.
Group, alkenyloxy group, alkanoylamino group or
Alkyl group optionally substituted by lucenoylamino group
Or, it represents an alkenyl group, and the balance is benzyl group or carbon.
Represents an alkyl group or a hydroxyalkyl group of Formulas 1 to 5
Then X ^-Represents a halogen ion or an organic anion)

[0021]

[Chemical 6]

(In the formula, at least one of R ¹ and R ² is an alkyl group which may be substituted with an alkoxy group having 8 to 28 carbon atoms, an alkenyloxy group, an alkanoylamino group or an alkenoylamino group. Or a alkenyl group, the rest is a benzyl group, an alkyl group having 1 to 5 carbon atoms or a hydroxyalkyl group, R ⁵ and R ⁶ are alkylene groups having 2 to 3 carbon atoms, and X ⁻ is a halogen ion or an organic group. Represents an anion, and r represents an integer of 1 to 20)

Among these cationic surfactants, the quaternary ammonium salt represented by the general formula (1) is particularly preferable, and the preferable one of the general formula (1) is, for example, the following general formula (3). ) To (5).

[0024]

Embedded image

[0025]

Embedded image

Of these, the branched quaternary ammonium salt represented by the general formula (3) usually has, for example, 8 to 8 carbon atoms.
The compound is synthesized using 16 oxo alcohols as raw materials, and examples thereof include a dialkyl dimethyl ammonium salt, a dialkyl methyl hydroxyethyl ammonium salt, and a dialkyl methyl benzyl ammonium salt having an alkyl group derived from the oxo alcohol. In the present invention, the branching rate of R ^{7 in} the formula (3) is usually 10 to 100%, and particularly 1
It is preferably from 0 to 50%. Although those total number of carbon atoms in R ⁷ is 8-16 are used, preferably those having a certain distribution, it is preferable in particular with a distribution shown below.

[0027]

TABLE 1 C ₈ ~C _11: 5% or less _{C 12: 10~35% C 13:} 15~40% C 14: 20~45% C 15: 5~30% C 16: 5% or less

Specific examples of such a branched quaternary ammonium salt include dialkyldimethylammonium chloride having an alkyl group having 8 to 16 carbon atoms and a branching rate of 10 to 50%.

Further, the fourth branch represented by the general formula (4)
The quaternary ammonium salt is usually a Guerbet alcohol having 8 to 28 carbon atoms.

[0030]

Embedded image

Among the branched quaternary ammonium salts, preferred are, for example, alkyl trimethyl ammonium salts having an alkyl group derived from Guerbet alcohol, alkyl dimethyl benzyl ammonium salts, dialkyl dimethyl ammonium salts, dialkyl methyl hydroxyethyl ammonium salts. , Dialkylmethylbenzyl ammonium salt and the like. Among them, particularly preferred are, for example, 2-decyltetradecyltrimethylammonium chloride, 2-dodecylhexadecyltrimethylammonium chloride, di-2
-Hexyldecyldimethylammonium chloride, di-
2-octyldodecyldimethylammonium chloride and the like can be mentioned.

As the methyl-branched quaternary ammonium salt represented by the general formula (5), those in which the sum of s and t is 15 are preferable.

Further, the general formulas (1), (2), (3),
Specific examples of X ⁻ which is a counter ion of the quaternary ammonium salt represented by (4) and (5) include chlorine, iodine,
Halogen ions such as bromine; and organic anions such as methosulfate, ethosulfate, methophosphate, and ethophosphate.

Examples of the cationic polymer include cationized cellulose derivative, cationized starch, cationized guar gum derivative, diallyl quaternary ammonium salt / acrylamide copolymer, quaternized polyvinylpyrrolidone derivative, polyglycol-polyamine condensate. Etc. can be mentioned. Specifically, the following general formula (6) or (7)

[0035]

Embedded image

(In the formula, R ¹⁴ and R ¹⁵ represent a hydrogen atom or a methyl group, X represents a halogen atom, and a represents 150 to 6).
A poly (dimethyldiallylammonium halide) type cationic polymer represented by the following general formula (8) or (9):

[0037]

Embedded image

(In the formula, R ¹⁶ and R ¹⁷ represent a hydrogen atom or a methyl group, X represents a halogen atom, and b + c is 150.
A copolymer of dimethyldiallylammonium halide and acrylamide represented by the following formula: quaternary nitrogen-containing cellulose ether; condensation product of taroylamine obtained from polyethylene glycol, epichlorohydrin, propyleneamine and tallow fatty acid A condensation product of cocoylamine obtained from polyethylene glycol, epichlorohydrin, propyleneamine and coconut oil fatty acid; and a cationized product of a vinylpyrrolidone-dimethylaminoethyl methacrylate copolymer.

These cationic compounds may be used alone or in combination.
More than one species may be used in combination, with 0.1% being present in the total composition.
001 to 20% by weight, preferably 0.005 to 15% by weight. If it is less than 0.001% by weight, a sufficient effect cannot be obtained, and if it exceeds 20% by weight, the feeling such as stickiness becomes poor.

In the hair cosmetic composition of the present invention, in addition to the above-mentioned components, components used in ordinary hair cosmetic compositions, for example, oils such as hydrocarbons, higher alcohols, esters and silicone oils; glycerin, propylene glycol, 1, Moisturizers such as 3-butylene glycol and polyethylene glycol;
Surfactants such as anionic surfactants, nonionic surfactants and amphoteric surfactants; medicinal agents such as anti-dandruff agents and vitamins; preservatives such as parabens; thickeners such as water-soluble polymers;
Coloring agents such as dyes and pigments; pearlizing agents such as glycol esters; other chelating agents, various compounded fragrances, and the like can be appropriately compounded as long as the effects of the present invention are not impaired.

The hair cosmetic composition of the present invention can be produced according to a usual method, and can be used as a hair rinse agent, a hair conditioner, a hair treatment, a rinse-in shampoo and the like.

[0042]

EFFECT OF THE INVENTION The hair cosmetic composition of the present invention imparts a natural luster to the hair by adsorbing the water-insoluble polymer fine particles to the cuticle edge portion of the hair selectively, and is good without stickiness. The feeling of cohesion of the hair can be improved with a natural feel. Further, by preliminarily absorbing the oil agent or the like into the fine particles, the oil agent or the like can be adsorbed only to the cuticle edge which is easily damaged, and the damage repair effect can be efficiently exhibited.

[0043]

EXAMPLES Next, the present invention will be further described with reference to examples, but the present invention is not limited to these examples.

Example 1 Hair rinse agents having the compositions shown in Tables 2 to 4 were produced by a conventional method, and their gloss improving effect and cohesion improving effect were evaluated.
The results are shown in Tables 2 to 4.

(Evaluation method) The hair of the monitor was divided in half, and a hair rinse agent containing fine particles was applied to one side and a hair rinse agent without fine particles (Comparative Product 1) was applied to the other side, and the hair after rinsing and drying was improved in luster. The effect and cohesion improving effect were visually evaluated by 10 persons for each monitor and evaluated according to the following criteria. ⊚: 1 compared to hair rinse agent without fine particles (Comparative Product 1)
All 0 people evaluated that they were effective. ：: 7 compared to hair rinse agent without fine particles (Comparative product 1)
９9 people evaluated it as effective. Δ: 4 compared to hair rinse agent without fine particles (Comparative product 1)
６6 people evaluated it as effective. ×: 3 compared to hair rinse agent without fine particles (Comparative product 1)
Less than people evaluated it as effective.

[0046]

[Table 2]

[0047]

[Table 3]

[0048]

[Table 4]

Example 2 A hair cosmetic composition having the composition shown in Table 5 was produced by a conventional method, and this was sprayed on a hair bundle, and the gloss after air drying was evaluated by an evaluator 10
It was visually evaluated by name.

[0050]

[Table 5]

9 out of 10 evaluators were the product 5 of the present invention,
It was evaluated that the hair bundles sprayed with the product 6 of the present invention were superior in gloss strength and gloss preference to those of the comparative product.

Claims (3)

[Claims] 1. The following components (A) and (B): (A) 0.001 to 10% by weight of water-insoluble polymer fine particles having an average particle size of 0.2 μm or more and less than 1 μm, (B) a cationic compound 0.001 Hair cosmetics containing ~ 20% by weight. 2. The water-insoluble polymer fine particles of the component (A) are silicone resin, methacrylic acid alkyl ester polymer, acrylic acid alkyl ester polymer, styrene-
The hair cosmetic composition according to claim 1, which is a fine particle of a polymer selected from a divinylbenzene copolymer, a copolymer of a polymerizable monomer capable of polymerizing these, and a chitosan-methacrylic acid copolymer. 3. The cationic compound of component (B) is
General formula (1) or (2)(Where R¹, R^Two, R^ThreeAnd R^FourAt least of
One is an alkenyl group having 8 to 28 carbon atoms in total.
Xy, alkanoylamino or alkenoylamino
Optionally substituted alkyl group or alkenyl
Is a benzyl group, the remainder is a benzyl group, and an alkyl group having 1 to 5 carbon atoms.
Group or hydroxyalkyl group, X ^-Is halogen
Indicates an ion or organic anion)(Where R¹And R^TwoOf which at least one is total carbon
Number 8 to 28 alkoxy group, alkenyloxy group, ar
Substituted with a canoylamino group or an alkenoylamino group
Represents an optionally substituted alkyl group or alkenyl group,
The rest is a benzyl group, an alkyl group having 1 to 5 carbon atoms, or a hydrate.
Roxyalkyl group, R^FiveAnd R⁶Has 2 to 3 carbon atoms
Represents an alkylene group of^-Is a halogen ion or organic
Represents an anion, r represents an integer of 1 to 20)
A quaternary ammonium salt; the following general formula (6) or
(7) [Chemical Formula 3](Where R¹⁴And R^FifteenRepresents a hydrogen atom or a methyl group,
X represents a halogen atom, and a represents a number of 150 to 6200.
Poly (dimethyldiallylammonium) represented by
Muhalide) type cationic polymer; the following general formula (8)
Or (9)(Where R¹⁶And R¹⁷Represents a hydrogen atom or a methyl group,
X represents a halogen atom, and b + c is 150 to 9000.
Dimethyldiallylammonium represented by
Halide / acrylamide copolymer type cationic poly
Mer; quaternary nitrogen-containing cellulose ether; polyethylene
Glycol, epichlorohydrin, propyleneamine
Condensation of Taroylamine Obtained from Fatty Acid and Beef Fatty Acid
Thing; polyethylene glycol, epichlorohydrin,
Cocoyl obtained from ropyleneamine and coconut oil fatty acid
Condensation products of amines; or vinylpyrrolidone-dimethyl
Aminoethylmethacrylate copolymer cationized product
The hair cosmetic composition according to claim 1 or 2.