JP2000191473A - Hair cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a hair cosmetic capable of adsorbing a pigment on hair in an aqueous liquid and providing a high coloring effect by use in rinsing and washing by making the cosmetic include a pigment, a surfactant and a polymer having a glass transition temperature equal to or lower than a fixed value. SOLUTION: This cosmetic comprises (A) preferably 0.01-10 wt.%, more preferably 0.1-3 (in the whole composition) of a pigment such as carbon black or lake dye, (B) preferably 0.05-30 wt.%, more preferably 0.5-5 wt.% of a surfactant such as a cationic surfactant or an alkyl saccharide-based surfactant, (C) preferably 0.01-10 wt.%, more preferably 0.3-3 wt.% of a polymer having <=100 deg.C glass transition temperature such as a polyacrylic ester and preferably further (D) preferably 0.05-20 wt.%, more preferably 0.5-10 wt.% of an oil agent such as a natural wax and is used by rinsing and washing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair cosmetic in which a pigment is efficiently adsorbed to hair in an aqueous liquid and a high coloring effect is obtained.

[0002]

2. Description of the Related Art There are known hair cosmetics containing a pigment for coloring hair and a surfactant for dispersing the pigment. In order to obtain the coloring effect of the pigment, a certain amount of adhesion is required on the hair. However, in the case of a dosage form that is used by rinsing, most of the dosage is washed away, and the effect cannot be sufficiently obtained. In order to increase the amount of the pigment attached to the hair, a method of blending it in a large amount in hair cosmetics can be considered, but this is disadvantageous in cost.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a hair cosmetic composition in which a pigment is efficiently adsorbed to hair in an aqueous liquid and a high coloring effect is obtained.

[0004]

Means for Solving the Problems The present inventors have found that if a specific polymer is used in combination with a pigment and a surfactant, the pigment can be efficiently adsorbed on the hair even if it is used by rinsing, and the coloring is performed. It has been found that a highly effective hair cosmetic can be obtained.

That is, the present invention relates to (A) a pigment, (B)
An object of the present invention is to provide a hair cosmetic composition containing a surfactant and (C) a polymer having a glass transition temperature of 100 ° C. or lower and used by rinsing.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION As the pigment of the component (A) used in the present invention, for example, inorganic pigments such as carbon black, talc, kaolin, mica, mica titanium, red iron oxide, magnesium silicate, titanium oxide, red 202, red 20
No. 4, Red No. 205, Red No. 206, Red No. 219, Red No. 228, Red No. 404, Yellow No. 205, Yellow 401
And water-insoluble pigments such as organic pigments such as No. 401, No. 401 and Blue No. 404; Red No. 505, Red No. 501, Red No. 225, Yellow No. 404, Yellow No. 405, Yellow No. 204
No., Orange No. 403, Blue No. 403, Green 202
Oil-soluble dyes such as No. No. 201 and purple No. 201; vat dyes such as Red No. 226, Blue No. 204 and Blue No. 201; and lake dyes obtained by laked various acidic dyes with aluminum or barium.

[0007] One or more of these pigments can be used.
From 5 to 5% by weight, and more preferably from 0.1 to 3% by weight, from the viewpoint of coloring property and cost.

The surfactant of the component (B) used in the present invention is not particularly limited as long as it can disperse the pigment of the component (A). Examples of the surfactant include anionic, cationic, amphoteric and nonionic surfactants. Either is acceptable. Specifically, for example, anionic salts such as alkyl ether sulfate, alkyl sulfate, olefin sulfonate, higher fatty acid salt, ether carboxylate, N-acyl amino acid, phosphate, sulfosuccinate, amide ether sulfate and the like. Surfactants; amphoteric surfactants such as amide amino acid type, carbobetaine type, amidobetaine type, sulfobetaine type, amidosulfobetaine type, imidazolinium betaine type, amino acid type, phosphobetaine type and phosphate ester type;
Polyoxyalkylene alkyl ether, fatty acid glycerin ester, fatty acid glycol ester, higher fatty acid sucrose ester, higher fatty acid sorbitan ester, polyglycerin fatty acid ester, higher fatty acid alkanolamide, polyoxyethylene hydrogenated castor oil, polyoxyalkylene sorbitan fatty acid ester, poly Nonionic surfactants such as oxyethylene sorbite fatty acid ester, alkyl saccharide surfactant, alkylamine oxide, silicone surfactant; quaternary such as alkyltrimethylammonium chloride, dialkyldimethylammonium chloride and benzalkonium chloride And cationic surfactants such as ammonium salts.

Of these, cationic surfactants, alkyl saccharide-based surfactants, and nonionic surfactants are preferred, and cationic surfactants are particularly preferred.

One or more surfactants of component (B) can be used, and 0.05 to 30% by weight, preferably 0.1 to 10% by weight, more preferably 0.5 to 5% by weight in the total composition. % Is preferable in terms of coloring property and feeling.

The polymer of the component (C) used in the present invention is:
Glass transition temperature (T _g ) of 100 ° C. or less, preferably −
It needs to be 150 to 50 ° C. T _g is 100
When the temperature exceeds ℃, the pigment cannot be efficiently adsorbed on the hair. Examples of such a polymer include methyl acrylate, hydroxyethyl acrylate, polyethylene glycol monoacrylate, glycidyl acrylate, methyl methacrylate, hydroxypropyl methacrylate, polyethylene glycol monomethacrylate, methacrylamide, N, N-dimethylacrylamide, and acetic acid. Vinyl, crotonic acid, etc .; unsaturated carboxylic acid monomers such as acrylic acid, methacrylic acid, itaconic acid, maleic acid; styrene sulfonic acid, 2-acrylamide-2
Organic acids having a reactive vinyl group such as unsaturated sulfonic acid monomers such as methylpropane sulfonic acid and vinyl sulfonic acid; unsaturated phosphoric acid monomers such as vinyl phosphate and bis (methacryloxyethyl) phosphate; Examples thereof include an alkali metal salt such as sodium and potassium, an ammonium salt, and the like); for example, styrene, divinylbenzene; butyl acrylate, 2-ethylhexyl acrylate, cyclohexyl acrylate, lauryl acrylate, Acrylic esters such as myristyl acrylate, stearyl acrylate, and behenyl acrylate; butyl methacrylate;
Methacrylates such as 2-ethylhexyl methacrylate, cyclohexyl methacrylate, lauryl methacrylate, myristyl methacrylate, stearyl methacrylate, and behenyl methacrylate; fluorine-based monomers such as trifluoroethyl methacrylate; hydrophobicity such as silicone macromonomer And a polymer obtained by polymerizing or copolymerizing at least one selected from hydrophilic monomers and the like.

As the polymer of the component (C), polyacrylic esters and polymethacrylic esters are preferable, and particularly, 2-ethylhexyl polymethacrylate, 2-ethylhexyl polyacrylate, lauryl polymethacrylate, lauryl polyacrylate. , Poly (stearyl methacrylate) and poly (butyl methacrylate) are preferred.

One or more kinds of the polymer of the component (C) can be used, and 0.01 to 10% by weight, particularly 0.1 to 5% by weight, further 0.3 to 3% by weight in the total composition. Is preferable in terms of coloring performance and feel.

The hair cosmetic composition of the present invention can further contain (D) an oil agent, which can further enhance the adsorptivity of the pigment to the hair. Such oils may be solid or liquid at normal temperature, and include natural waxes such as petroleum wax, animal and vegetable waxes and natural wax processed products such as hydrides thereof, Fischer-Tropsch wax, polyethylene wax and the like. Waxes; liquid paraffin,
Hydrocarbons such as isoparaffin and squalane; esters such as isopropyl myristate, cetyl octanoate, octyldodecyl myristate, and diisopropyl adipate; higher alcohols such as cetanol and stearyl alcohol; olive oil, jojoba oil, camellia oil, cottonseed oil, and mink And natural animal and vegetable oils such as oils.

One or more of these oil agents can be used, and 0.05 to 20% by weight, especially 0.1 to
It is preferable to add 15% by weight, more preferably 0.5 to 10% by weight, in view of coloring property and feeling.

In the hair cosmetic composition of the present invention, besides the above-mentioned components, pharmaceutically active agents such as antidandruff agents, bactericides, vitamins and the like;
Polyols such as glycerin and propylene glycol;
Preservatives such as parabens; thickeners such as water-soluble polymers; silicones, ultraviolet absorbers, plant extracts, astringents, fragrances, and the like can be appropriately added 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 is applied as a dosage form to be rinsed and used, for example, a hair rinse, a hair treatment, a hair conditioner, a hair pack, a hair shampoo and the like.

[0018]

INDUSTRIAL APPLICABILITY In the hair cosmetic composition of the present invention, a pigment is efficiently adsorbed to hair in an aqueous liquid, and a high coloring effect is obtained.

[0019]

Example 1 A hair rinse having the composition shown in Table 1 was produced by a conventional method, and its hair coloring effect was evaluated. The results are shown in Table 1.

(Evaluation method) A hair bundle of 1 g of goat hair was shampooed, 0.2 g of each hair rinse was applied, uniformly spread with a finger, immediately rinsed thoroughly with warm water, and dried. The color was measured with a color difference meter CR-300 manufactured by Minolta Co., Ltd., and the color difference (ΔE) was obtained from the color of the original goat hair, and evaluated according to the following criteria. The larger the value of ΔE, the higher the coloring effect. A: ΔE is 30 or more. ；: ΔE is 20 or more and less than 30. Δ: ΔE is 10 or more and less than 20. ×: ΔE is less than 10.

[0021]

[Table 1]

Example 2 A hair shampoo having the composition shown in Table 2 was produced by a conventional method. The hair coloring effect when shampooing was performed using 0.2 g of the obtained hair shampoo was evaluated in the same manner as in Example 1. The results are shown in Table 2.

[0023]

[Table 2]

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Osamu Tachizawa, Inventor 2-1-3 Bunka, Sumida-ku, Tokyo F-term in Kao Corporation Research Laboratories 4C083 AB012 AC022 AC072 AC122 AC422 AC472 AC642 AC692 AC782 AC932 AD092 BB01 BB11 BB21 CC31 CC38 CC39 DD27 EE07 EE26

Claims (2)

[Claims] 1. A hair cosmetic which contains (A) a pigment, (B) a surfactant and (C) a polymer having a glass transition temperature of 100 ° C. or lower, and is used by rinsing. 2. The hair cosmetic according to claim 1, further comprising (D) an oil agent.