JPH1072324A - Hair cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prepare a hair cosmetic that has excellent effects of giving natural luster to hair, makes hair in a cluster easier to be groomed, and can prevent hair from damaging or remedy damaged hair by compounding a specific kind of particulates. SOLUTION: This hair cosmetic contains water-insoluble cationic particulates of average particle size of 0.2μm or more and smaller than 1μm, preferably in a quantity of 0.001-10wt.% based on the total weight of the whole composition of the cosmetic, the water-insoluble cationic particulates being preferably water- insoluble polymer particulates or inorganic particulates which are coated with a cationic compound. Furthermore the water-insoluble polymer particulates are preferably a silicone resin, acrylic alkyl ester polymer, methacrylic alkyl ester polymer, styrene polymer, etc., and the cationic compound is preferably a surfactant, etc. This hair cosmetic develops its effects on hair by adsorption of the water-insoluble cationic particulates onto cuticle edges of hair.

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, the present inventors have conducted intensive studies to solve the above-mentioned problems.

[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 inventor of the present invention has found that when water-insoluble fine particles having a particle size substantially equal to the height (0.2 to 1 μm) of the edge portion are adsorbed on the edge portion, the sharpness of the edge portion is increased. It has been found that the angle is relaxed, the smoothness of the hair fiber is improved, and gloss is imparted. Also, instead of covering the entire hair with an oil agent and a polymer as in a conventional styling agent, the cuticle flat portion, which makes up most of the surface area of the hair, is left as it is, and the fine particles are adsorbed only on the edge portion to make the relevant hair fine. It has been found that by relaxing the angle, natural gloss can be imparted without increasing the intensity of the reflected light when the hair is irradiated with light to an unnatural level. Furthermore, it has been found that by using cationic fine particles as the fine particles, the feeling of squeaking and the feeling of hardening of the hair caused by the blending of the normal particles can be suppressed, and the feeling of use as a hair cosmetic can be kept good.

[0008] That is, the present invention provides an average particle size of 0.2 µm
An object of the present invention is to provide a hair cosmetic containing water-insoluble cationic fine particles having a particle size of less than 1 μm.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Examples of the water-insoluble cationic fine particles used in the present invention include water-insoluble cationic polymer fine particles and fine particles in which the surfaces of water-insoluble polymer fine particles or inorganic fine particles are coated with a cationic compound.

The water-insoluble cationic polymer fine particles include a cationic group such as a primary, secondary or tertiary amino group on at least a part of the main chain or side chain of the polymer.
Polymer fine particles having a quaternary ammonium group or the like can be used. Specific examples include an amine-added acrylic resin.

The water-insoluble polymer fine particles in the water-insoluble polymer fine particles or the fine particles in which the surfaces of the inorganic fine particles are coated with a cationic compound include, for example, a polymer of a silicone resin or an alkyl acrylate or a polymerizable monomer polymerizable therewith. , A copolymer of an alkyl methacrylate or a polymerizable monomer copolymerizable therewith, a polymer of styrene or a copolymer of a polymerizable monomer copolymerizable therewith, and chitosan-methacrylic acid Fine particles of a polymer such as an acid copolymer may be used.

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.

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.

The monomers polymerizable with the alkyl acrylate or the alkyl methacrylate include:
For example, styrene and the like can be mentioned, and a preferable copolymer thereof is, for example, a styrene-butyl methacrylate copolymer. Examples of the monomer capable of polymerizing with styrene include divinylbenzene and the like, and preferable copolymers thereof include a styrene-divinylbenzene copolymer and the like.

Further, examples of the inorganic fine particles include fine particles of titanium oxide, silica, alumina, iron oxide, zinc oxide, chromium oxide, mica and the like.

The surface of these fine particles can be coated with a cationic compound by a usual surface treatment. Here, examples of the cationic compound used for the surface treatment include a cationic surfactant, a cationic polymer, and the like.

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

[0018]

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(Wherein 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 an alkenyl group, the remainder being benzyl, carbon
Represents an alkyl group or a hydroxyalkyl group of Formulas 1 to 5
Then X ^-Represents a halogen ion or an organic anion)

[0020]

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(Wherein at least one of R ¹ and R ² is an alkyl group which may be substituted by an alkoxy group, alkenyloxy group, alkanoylamino group or alkenoylamino group having a total of 8 to 28 carbon atoms) or an alkenyl group, the remainder represents a benzyl group, alkyl group or hydroxyalkyl group having 1 to 5 carbon atoms, R ⁵ and R ⁶ represents an alkylene group having 2 to 3 carbon atoms, X ^- is a halogen ion or an organic Represents an anion, and r represents an integer of 1 to 20)

Among these cationic surfactants, quaternary ammonium salts represented by the above-mentioned general formula (1) are particularly preferable, and further preferable ones of the general formula (1) are, for example, the following general formula (3) ) To (5).

[0023]

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[0024]

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Of these, the branched quaternary ammonium salts represented by the general formula (3) are, for example, usually those having 8 to 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, those having a branching ratio of R ^{7 in} the formula (3) of usually 10 to 100% are used.
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.

C _{8 to} C ₁₁ : 5% or less, C ₁₂ : 10 to 35%, C ₁₃ : 15 to 40%, C ₁₄ : 20 to 45%, C ₁₅ : 5 to 30%, C ₁₆ : 5% Less than.

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 ratio 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.

[0029]

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Of the branched quaternary ammonium salts, preferred are, for example, alkyltrimethylammonium salts having an alkyl group derived from Guerbet alcohol, alkyldimethylbenzylammonium salts, dialkyldimethylammonium salts, dialkylmethylhydroxyethylammonium salts And dialkylmethylbenzylammonium salts. 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 a cationized cellulose derivative, a cationized starch, a cationized guar gum derivative, a diallyl quaternary ammonium salt / acrylamide copolymer, a quaternized polyvinyl pyrrolidone derivative, and a polyglycol-polyamine condensate. And the like. Specifically, the following general formula (6) or (7)

[0034]

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(Wherein, 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):

[0036]

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(Wherein, R ¹⁶ and R ¹⁷ represent a hydrogen atom or a methyl group, X represents a halogen atom, and b + c represents 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.

The surface treatment with these cationic compounds is preferably carried out, for example, by treating the fine particles and these cationic compounds in a weight ratio of 1/20 to 20/1.

These water-insoluble cationic 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 any one of a spherical shape, an irregular shape, a flat shape, and a plate shape, and the structure may be any of a hollow structure, a porous shape, and the like. Further, fine particles which have been subjected to a chemical treatment for imparting porosity or a chemical treatment for imparting oil absorbing ability or water absorbing ability can also be used.

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

In the hair cosmetic composition of the present invention, these water-insoluble cationic fine particles are preferably contained in an amount of 0.001 to 10% by weight in the total composition from the viewpoints of exhibiting the gloss imparting effect and preventing the occurrence of creaking, hardness and the like. , More preferably 0.01 to
5% by weight is blended.

The hair cosmetic composition of the present invention includes, in addition to the above-mentioned components, components used in ordinary hair cosmetics, such as oils such as hydrocarbons, higher alcohols, esters, and silicone oils; glycerin, propylene glycol, Humectants 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 of the present invention can be produced according to a usual method, and can be used as a hair rinse, a hair conditioner, a hair treatment, a rinse-in shampoo and the like.

[0045]

According to the hair cosmetic composition of the present invention, the water-insoluble cationic fine particles to be incorporated selectively adsorb to the cuticle edge of the hair, thereby giving the hair a natural luster and good without stickiness of the hair. 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.

[0046]

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 A rinse was prepared according to the following components and amounts.

[0048]

[Table 1] (% by weight) Hydroxyethyl cellulose 12 2. Polyoxypropylene polyoxyethylene alkyl ether phosphoric acid 1 3. Polyoxyethylene alkyl ether 3 4. Polyoxyethylene hydrogenated castor oil 0.55. 5. Stearyl trimethyl ammonium chloride 1 Liquid paraffin 0.5 7. Propylene glycol 15 8. Ethanol 5 9. Sodium hydroxide 0.1 10. Ion-exchanged water 65.9 11. Cation-treated polymethyl methacrylate fine particle dispersion ^{* 1} 7.0

* 1: 10 g of fine particles of polymethyl methacrylate ^{* 2} were added to 60 g of a 0.2% aqueous solution of stearyltrimethylammonium chloride and dispersed by stirring. * 2: Polymethylmethacrylate fine particles (manufactured by Soken Chemical Co., Ltd., MP-5000 sphere, average particle size 0.4 μm)

After heating and mixing components 1, 3 to 7, and 10 at 70 ° C., and cooling to 50 ° C., components 2, 8, 9, and 11 were added, and the mixture was cooled with stirring.

Examples 2 and 3 Rinses were prepared according to the following components and amounts.

[0052]

Table 2 (% by weight) Example 2 Example 3 Hydroxyethyl cellulose 1 1 2. 2. Polyoxypropylene polyoxyethylene alkyl ether phosphoric acid 111 Polyoxyethylene alkyl ether 33 4 Polyoxyethylene hydrogenated castor oil 0.5 0.5 5. 5. Stearyl trimethylammonium chloride Liquid paraffin 0.5 0.5 7. Propylene glycol 15 15 8. Ethanol 55 9. Sodium hydroxide 0.1 0.1 10. Styrene methacrylic acid copolymer fine particles ^{* 3} 1.0-11. Polymethyl methacrylate fine particles ^* 4-1.0 Ion exchange water Balance Balance

* 3: MP-5500 positively charged particles (+450 μc / g) spherical 0.4 μm, manufactured by Soken Chemical Co., Ltd. * 4: MP-2701 positively charged particles (+500 μc / g) spherical, manufactured by Soken Chemical Co., Ltd. 4 μm

Example 4 A spray was prepared by mixing the following components.

[Table 3] (% by weight) Cation-treated styrene-divinylbenzene-alkyl acrylate copolymer dispersion ^{* 5} 1.5 2. Ethanol 5.0 3. Appropriate amount of fragrance Dye appropriate amount5. Ion exchange water balance

* 5: 0.16 g of a styrene-divinylbenzene-acrylic acid copolymer ^{* 6} was added to 50 g of a 0.16% aqueous solution of stearyltrimethylammonium chloride ^* , and dispersed by stirring. * 6: Mitsui Toatsu Chemical Co., Ltd., Muticle 110C (irregular, particle size 1.0 μm)

Example 5 A spray was prepared by mixing the following components.

Table 4 (% by weight) 1. Aqueous dispersion of cation-treated TiO ₂ ^{* 7} 25 Appropriate amount of flavor 3. Dye appropriate amount 4. Aminoethylaminopropylsiloxane / dimethylsiloxane copolymer emulsion ^{* 10} 0.25 5. Ion exchange water balance

* 7: Cellcoat L-200 ^{* 8} 0.3% a
q. 0.02 g of TiO ₂ ^{* 9} was added to 50 g and dispersed by stirring. * 8: polyquaternium-4 manufactured by National Starch Co., Ltd. * 9: TiO ₂ spherical particles manufactured by Hokuko Chemical Industry Co., Ltd.
6 μm * 10: SM8 manufactured by Dow Corning Toray Silicone Co., Ltd.
702C

Example 6 A spray was prepared by mixing the following components.

Table 5 (% by weight) 1. Aqueous dispersion of cation-treated TiO ₂ ^{* 11} 25 Appropriate amount of flavor 3. Dye appropriate amount 4. 4. Diethylene glycol monoethyl ether 20 Ion exchange water balance

* 11: Guff coat 734 ^{* 12} 3% aq.10
0.12 g of TiO ₂ ^{* 9} was added to 0 g and dispersed by stirring. * 12: polyquaternium-11 manufactured by ISP

Comparative Example 1 Preparation was performed by adding ion-exchanged water in place of the component 11 in Example 1.

Comparative Example 2 Preparation was made by adding ion-exchanged water instead of component 1 of Example 4.

Comparative Example 3 Cell coat L-200 was used in place of component 1 of Example 5.
Prepared using 0.3% aq.

Comparative Example 4 Guff coat 7343 3% a instead of component 1 of Example 6
q.

Test Example 1 The hair cosmetics obtained in the above Examples and Comparative Examples were used by a female monitor, and 10 monitors visually evaluated the gloss improving effect and the cohesive effect for each monitor. The evaluations were compared with Examples 1, 2, and 3 and Comparative Example 1, Example 4 and Comparative Example 2, Example 5 and Comparative Example 3, and Example 6 and Comparative Example 4, and evaluated according to the following criteria.

◎: All 10 persons evaluated that the examples were more effective than the comparative examples. Good: 7 to 9 out of 10 persons evaluated that the examples were more effective than the comparative examples. B: 4 to 6 out of 10 persons evaluated that the examples were more effective than the comparative examples. C: Three or less out of ten evaluated that the examples were more effective than the comparative examples.

[0066]

[Table 6]

Claims (3)

[Claims] 1. A hair cosmetic containing water-insoluble cationic fine particles having an average particle size of 0.2 μm or more and less than 1 μm. 2. The hair cosmetic according to claim 1, wherein the water-insoluble cationic fine particles are water-insoluble cationic polymer fine particles, or fine particles in which the surfaces of water-insoluble polymer fine particles or inorganic fine particles are coated with a cationic compound. 3. A water-insoluble polymer fine particle comprising a silicone resin, a polymer of an alkyl acrylate or a copolymer with a polymerizable monomer polymerizable therewith, a polymer of an alkyl methacrylate or a polymerizable with the polymer The hair cosmetic according to claim 2, wherein the cosmetic is a fine particle of a polymer selected from a copolymer with a hydrophilic monomer, a styrene polymer or a copolymer with a polymerizable monomer that can be polymerized therewith, and a chitosan-methacrylic acid copolymer. .