JP2008088147A - Cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cosmetic material having flowability and excellent in dispersion stability of dispersed particles. <P>SOLUTION: (1) The cosmetic material comprises a water soluble polymer, a hectorite-based inorganic thickener and a film-forming polymer emulsion. (2) The cosmetic material (1) described above in which the water soluble polymer is xanthan gum is provided. (3) The cosmetic materials (1) and (2) described above with which the hectorite-based inorganic thickener is blended in 0.01-5 wt.% are also provided. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a colorant, powder and cosmetics excellent in dispersion stability of granules, and particularly to an eyeliner liquid and a mascara liquid in which a pigment is blended.

  Various colorants, powders, and granules (hereinafter referred to as dispersed particles) are blended in the cosmetic. Since the specific gravity of these dispersed particles is different from that of water, oil, ethanol or the like as a dispersion medium, it is very difficult to stably disperse.

  Conventionally, in cosmetics having such a dispersion system, a polymer thickener is added, or a viscosity is expressed by gelation of a surfactant, etc., and the viscosity suppresses aggregation, floating or sedimentation of dispersed particles. Alternatively, a method has been used in which stirring spheres are placed in the dispersion and redispersion is attempted by stirring during use.

  As a method of using viscosity for stable dispersion of dispersed particles, a method of adding a polymer thickener such as carboxyvinyl polymer, carboxymethyl cellulose, xanthan gum, alginate, anionic surface activity such as polyoxyethylene alkyl ether sulfate For example, a method using a viscosity developed by a combination of an agent and an amphoteric surfactant such as an alkylamide betaine has been used. However, there is a limit to stable dispersion due to viscosity, and unless the dispersion has a high viscosity that shows almost no fluidity, it is inevitable that the dispersed particles will aggregate, float and settle after a long period of time. It was very difficult to obtain cosmetics that are liquid and stable dispersions exhibiting properties.

  In addition, the method of re-dispersing by stirring when using a stirring ball in the dispersion liquid imposes various restrictions on the container filled with the cosmetic, and for the user, the container The operation of shaking and distributing was really unusable.

  This invention is made | formed under the above situations, and makes it a subject to provide the cosmetics which have fluidity | liquidity and are excellent in the dispersion stability of a dispersed particle.

  The present invention is (1) a cosmetic comprising a water-soluble polymer, a hectorite inorganic thickener, and a film-forming polymer emulsion.

  The present invention is also the cosmetic according to (1) above, wherein (2) the water-soluble polymer is xanthan gum.

  The present invention is also the cosmetic according to the above (1) and (2), wherein the blending amount of (3) hectorite inorganic thickener is 0.01 to 5% by weight.

  According to the present invention, by combining a water-soluble polymer, a hectorite inorganic thickener, and a film-forming polymer emulsion in combination, dispersion work is facilitated during production, and a predetermined viscosity is present during storage. A cosmetic which maintains a stable dispersion and loses its structural viscosity during use and exhibits fluidity can be obtained. Therefore, for example, when the cosmetic of the present invention is applied to an eyeliner liquid, the pigment does not settle during storage, and thus a stable color tone is maintained, and when used, it has fluidity due to shearing force during use. Since it becomes an eyeliner liquid, the liquid comes out quickly without stagnation and becomes excellent in usability.

  Hereinafter, the present invention will be described in detail. The cosmetic of the present invention contains a water-soluble polymer, a hectorite inorganic thickener, and a film-forming polymer emulsion.

  In the cosmetic of the present invention, the viscosity developed by the combination of the water-soluble polymer and the hectorite inorganic thickener is important. With the viscosity of the water-soluble polymer alone, long-term dispersion stability is not ensured as in the case of conventional dispersion systems, and in the case of an eyeliner liquid containing a pigment, the pigment will settle.

  The cosmetic of the present invention utilizes the thixotropic viscosity of a hectorite-based inorganic thickener by combining a water-soluble polymer with a hectorite-based inorganic thickener. This thixotropic property is such that the cosmetic composition of the present invention stably suspends and disperses dispersed particles due to its structural viscosity when stored at rest, and rapidly develops fluidity due to shear stress during use. Have. At this time, if the hectorite inorganic thickener alone is used, the dispersed particles will aggregate, float, and settle until the structural viscosity is re-emerged. The combined use of molecules is essential.

  Examples of the water-soluble polymer used in the cosmetic of the present invention include quince seed gum, carrageenan, xanthan gum, curdlan, gelatin, hydroxyethyl cellulose, carboxymethyl cellulose, alginate, polyvinyl alcohol, carboxyvinyl polymer, and the like. Alternatively, two or more types are blended, but xanthan gum is particularly preferable because of its strong viscosity and being hardly affected by other coexisting components. As the xanthan gum, those marketed under the trade name “Echo Gum” of Dainippon Sumitomo Pharma Co., Ltd. can be used.

  The amount of the water-soluble polymer varies depending on the type, and is not particularly limited, but the amount of the water-soluble polymer that exhibits a viscosity that temporarily disperses and stabilizes the dispersed particles until the hectorite inorganic thickener again exhibits structural viscosity. Formulation is required. In the case of an eyeliner solution using xanthan gum, it is in the range of 0.05 to 1.0% by weight.

  The hectorite inorganic thickener used in the cosmetic of the present invention may be either a natural product or a synthetic product, but the synthetic product is preferable because it is less colored and excellent in transparency. As the synthetic hectorite-based inorganic thickener, those commercially available under the trade name “Laponite” of Wilber Ellis Co., Ltd. can be used.

  The blending amount of the hectorite inorganic thickener is 0.01 to 5% by weight. If the amount is less than 0.01% by weight, sufficient thixotropy cannot be obtained, and if it exceeds 5% by weight, the entire system gels and loses fluidity. Depending on the combination with the water-soluble polymer used in combination, 0.1 to 1% by weight is particularly preferable.

  The cosmetic of the present invention also contains a film-forming polymer emulsion. This film-forming polymer emulsion is used to fix pigments on the skin in makeup cosmetics, but a further important role in the present invention is to disperse dispersed particles such as pigments in a dispersion medium during production. The surfactant in the emulsion becomes a dispersant when dispersed in the emulsion. It is considered that this surfactant prevents aggregation of the dispersed particles and works synergistically with the thixotropic viscosity of the hectorite inorganic thickener to form a stable dispersion. At this time, the type of the surfactant is not particularly limited, and functions sufficiently as a dispersant when contained in the film-forming polymer emulsion. Accordingly, the film-forming polymer emulsion has film-forming properties and is not particularly limited as long as it has an emulsion system containing a surfactant, but it is resistant to sweat, tears and sebum and is easy to wash off. preferable. Examples include homopolymer emulsions, copolymer emulsions, acrylic styrene polymer emulsions, vinyl acetate polymer emulsions, polyvinyl pyrrolidone polymer emulsions, and silicone polymer emulsions of acrylic acid, methacrylic acid and their alkyl esters, one or two of which Although the above is mix | blended, an acrylic acid polymer emulsion is preferable from the intensity | strength of a film | membrane, and transparency.

  The blending amount of the film-forming polymer emulsion is not particularly limited depending on the kind and the usability target, but is preferably 1 to 20% by weight as the solid content. When the amount is less than 1% by weight, the function as a dispersant is not exhibited, and the force for fixing the pigment or the like is not sufficient. If it exceeds 20% by weight, the fixing force is too strong, and the usability is not preferable.

  In addition to the above components, the cosmetic of the present invention may contain other components that are usually used in cosmetics depending on the purpose. The following components are exemplified as such other components, and one or two or more types are blended and manufactured according to a conventional method.

  The following can be mentioned as an oil-based component. Olive oil, camellia oil, macadamia nut oil, castor oil, avocado oil, wheat germ oil, safflower oil, moringa oil, cottonseed oil, soybean oil, tea seed oil, sunflower oil, evening primrose oil, palm oil, palm oil, palm kernel oil, Fats and oils such as beef tallow, horse fat, cacao butter and owl, carnauba wax, candelilla wax, jojoba oil, beeswax, lanolin and other waxes, liquid paraffin, paraffin, petrolatum, ceresin, microcrystalline wax, squalane and other hydrocarbons, Higher fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, behenic acid, oleic acid, linoleic acid, linolenic acid, cetyl alcohol, stearyl alcohol, isostearyl alcohol, 2-octyldodecanol, batyl alcohol, Lanolin alcohol, cholesterol Alcohol, higher alcohols such as phytosterol, isopropyl myristate, 2-octyldodecyl myristate, cetyl octanoate, cetyl 2-ethylhexanoate, pentaerythritol tetraester, diisostearyl malate, triethyl citrate, cholesteryl stearate, Esters such as phytostearyl isostearate, ethoxydiglycol behenate, ethoxydiglycol oleate, coconut oil fatty acid butylene glycol, methylpolysiloxane, methylphenylpolysiloxane, cyclic dimethylsilicone oil, alkyl-modified silicone, amino-modified silicone, Silicone such as three-dimensional network structure silicone and silicone rubber.

  The following can be mentioned as a polyhydric alcohol. Glycerin, diglycerin, propylene glycol, dipropylene glycol, 1,3-butylene glycol, diethylene glycol, polyethylene glycol, ethoxydiglycol, heptanediol, octanediol and the like.

  The following can be mentioned as saccharides. Sorbitol, mannitol, sucrose, lactose, xylitol, maltitol, trehalose, etc.

  The following can be mentioned as surfactant. Higher fatty acid soap, alkylbenzene sulfonate, alkyl sulfate, POE alkyl ether sulfate, acyl N-methyl taurate, alkyl ether phosphate, N-acyl amino acid salt, α-olefin sulfonate, POE alkyl ether Anionic surfactant such as carboxylate, cationic surfactant such as alkyltrimethylammonium chloride, dialkyldimethylammonium chloride, benzalkonium chloride, alkyldimethylaminoacetic acid betaine, alkylamidopropyldimethylaminoacetic acid betaine, 2-alkyl -Amphoteric surfactants such as -N-carboxymethyl-N-hydroxyethylimidazolinium betaine, glyceryl monofatty acid ester, sorbitol monofatty acid ester, sorbitan monofatty acid ester Sugar fatty acid esters, POE alkyl ethers, POE alkyl phenyl ethers, alkanolamides, ethylene oxide-propylene oxide block copolymer, POE hardened castor oil derivatives, nonionic surfactants such as alkyl amine oxides.

  Examples of the colorant, powder, and granule include the following. Inorganic pigments such as black iron oxide, red iron oxide, yellow iron oxide, ultramarine, carbon black, pearl pigments, organic pigments, tar pigments, natural pigments, talc, kaolin, mica, magnesium aluminum silicate, silicic anhydride, oxidation Granules made of inorganic powders such as titanium, mica titanium, zinc white and zeolite, organic powders such as nylon powder, polyethylene powder, cellulose powder and silk powder, nylon, polyethylene, cellulose, wax, fatty acid ester and natural products.

  The following can be mentioned as animal and plant extracts. Mucopolysaccharides such as sodium hyaluronate and chondroitin sulfate, animal extracts such as chitin / chitosan, collagen, elastin, and peptides, aloe extract, prunus extract, nettle extract, chamomile extract, licorice extract, walnut seed extract, shikon extract, birch Extract, Achillea millefolium extract, Pepper extract, Tea extract, Toki extract, Garlic extract, Carrot extract, Hamamelis extract, Hinokithiol, Loquat leaf extract, Beech tree bud extract, Loofah extract, Safflower extract, Willow extract, Caper extract , Plant extracts such as citrus nectar extract, peach leaf extract, eucalyptus extract, rose water, etc.

  Examples of the bactericidal / preservative include the following. Benzoic acid, sodium benzoate, salicylic acid, sorbic acid, paraoxybenzoic acid ester (ethyl paraben, butyl paraben, etc.), trichlorocarbanilide, phenoxyethanol, hexachlorophene, benzalkonium chloride, chlorhexidine, zinc pyrithione, triclosan and the like.

  The following can be mentioned as antioxidant. Gallic acid ester, sodium bisulfite, etc. Examples of the antioxidant assistant include the following. Phosphoric acid, citric acid, maleic acid, malonic acid, succinic acid, fumaric acid, kephalin, phytic acid, EDTA, etc.

  Examples of the metal sequestering agent include the following. Edetate, hydroxyethanediphosphonic acid, phosphoric acid, citric acid, succinic acid, phytic acid, etc.

  The following can be mentioned as a ultraviolet absorber. Benzophenone derivatives such as 2-hydroxy-4-methoxybenzophenone and 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid, paraaminobenzoic acid derivatives such as paraaminobenzoic acid and octylparadimethylaminobenzoate, octyl paramethoxycinnamate, diparamethoxy Methoxycinnamic acid derivatives such as mono-2-ethylhexanoic acid glyceryl cinnamate, salicylic acid derivatives such as octyl salicylate, urocanic acid and the like.

  The following can be mentioned as a pH adjuster. Sodium hydroxide, potassium hydroxide, sodium carbonate, aqueous ammonia, monoethanolamine, triethanolamine, alkali agents such as 2-amino-2-methyl-1-propanolamine, and acids such as citric acid and phosphoric acid.

  The following can be mentioned as various chemical | medical agents. Whitening agents such as arbutin, kojic acid, vitamin C, assembly extract, gamma-oryzanol, capsicum tincture, nicotinic acid benzyl ester, estradiol, ethinyl estradiol, pantothenic acid, photosensitizer 301 and other hair-growing agents, β-glycyrrhetic acid, Glycyrrhizic acid derivatives, allantoin, ε-aminocaproic acid, zinc oxide, aluminum sulfate, tannic acid, lactic acid, menthol, corticosteroids, antihistamines, and other rough skin prevention agents, sulfur, salicylic acid, resorcin, benzalkonium chloride, halocarban, etc. Anti-acne agents, chlorohydroxyaluminum, aluminum chloride, antiperspirants such as zinc oxide, vitamin A and its derivatives, vitamin B6 hydrochloride, vitamin B6 tripalmitate, vitamin B6 dioctanoate, vitamin B2 and its derivatives, vitamin B such as vitamin B12, vitamin B15 and its derivatives, ascorbic acid, ascorbic acid phosphate ester (salt), vitamin C such as ascorbic acid dipalmitate, α-tocopherol, β-tocopherol, γ -Vitamin E such as tocopherol, vitamin E acetate, vitamin E nicotinate, vitamins such as vitamin D, vitamin H, pantothenic acid, panthetin, glycine, alanine, valine, leucine, serine, threonine, phenylalanine, tyrosine, aspartic acid Amino acids such as asparagine, glutamine, taurine, arginine, histidine and their hydrochlorides.

  The cosmetic dosage form of the present invention can be developed into viscous liquid or emulsified eyeliner, mascara, nail enamel, hair color and the like.

  Next, the present invention will be described more specifically with reference to examples. In addition, this invention is not limited only to these Examples. Unless otherwise specified, the blending amount is expressed in weight%.

<Examples 1 and 2 and Comparative Example Eyeliner Solution>
An eyeliner solution having the formulation shown in Table 1 below was prepared by a conventional method.

  The viscosities of the eyeliner liquids of Example 1 and Comparative Example 1 are shown in FIG. The viscosity was measured at 30 ° C. using a Bismetron VGA-1 viscometer manufactured by Shibaura System.

  In FIG. 1, as the rotational speed of the measurement conditions of the viscometer is increased, that is, as the shearing force is increased, the viscosity decreases sharply in Example 1, whereas no comparison is made with no hectorite inorganic thickener. In the example, it is gradually decreasing. This indicates that Example 1 has a thixotropic viscosity and increases fluidity by shearing force.

  Next, Table 2 shows the dispersion stability when the eyeliner solutions of Example 1 and Comparative Example 1 were stored at room temperature and 52 ° C.

表２において、実施例１が格段に分散安定性に優れていることが判る。

In Table 2, it can be seen that Example 1 is remarkably excellent in dispersion stability.

<Example 3 Mascara liquid>
Black iron oxide 10.0
Xanthan gum (* 1) 0.1
Synthetic hectorite (* 2) 0.2
Alkyl acrylate copolymer emulsion 15.0
1,3-Putylene glycol 3.0
Metal sequestering agent appropriate amount Preservative appropriate amount purified water to 100

    FIG. 1 shows the viscosity measurement results of the eyeliner liquids of Example 1 and Comparative Example. As the rotational speed of the viscometer is increased, that is, as the shearing force is increased, the viscosity in Example 1 rapidly decreases, whereas it gradually decreases in the comparative example in which no hectorite inorganic thickener is blended. Yes. This indicates that Example 1 has a thixotropic viscosity and increases fluidity by shearing force.

Claims (3)

  A cosmetic comprising a water-soluble polymer, a hectorite inorganic thickener, and a film-forming polymer emulsion.   The cosmetic according to claim 1, wherein the water-soluble polymer is xanthan gum.   The cosmetic according to claim 1 or 2, wherein the amount of the hectorite inorganic thickener is 0.01 to 5% by weight.

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