JPH11222420A - Cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain cosmetic that has high ultraviolet-screening effect with excellent application sense and excellent retention of cosmetic effect and is resistant to whitening on bathing by using a specific powder and an ultraviolet- shielding component but no surfactant. SOLUTION: This cosmetic includes (A) an organosiloxane elastomer spherical powder particles, namely spherical elastic powder particles of three-dimensionally crosslinked polymer bearing organosiloxane skeletons preferably in an amount of 0.3-70 wt.%, more preferably 1-30 wt.%, (B) an ultraviolet screening component, preferably in an amount of 0.1-50 wt.%, more preferably 0.5-30 wt.%, (C) when necessary, other powders (pigments, colorants, resins), finishing oil, fluorine compounds, resins, antioxidants, thickeners, preservatives and the like so that it may substantially not contains any surfactant. In a preferred embodiment, the component A has a primary particle size of 0.1-20 μm on the average. As a component B, an inorganic one may be used such as microfine particles of titanium oxide or an organic one may be used such as 2-ethylhexyl p- methoxycinnamate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cosmetic which has an excellent feel when used and a long lasting cosmetic effect, which is hardly whitened when bathed in a water bath and which has an ultraviolet protective effect.

[0002]

2. Description of the Related Art In order to protect skin from ultraviolet rays of sunlight, organic and inorganic ultraviolet protection components are often blended as components for cosmetics such as sunscreens and foundations. However, the above-mentioned products were not always satisfactory in the feel at the time of use due to the fact that they contained an ultraviolet protection component. Also, due to outdoor activities such as water bathing, the makeup coating may become white or run off, and there is a problem with the persistence and appearance of the makeup effect. Has been done, but has not been satisfactory.

[0003]

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has an excellent feel when used, a long lasting cosmetic effect, hardly whitens in a water bath, and an ultraviolet protection. The purpose is to obtain a cosmetic having an effect.

[0004]

Means for Solving the Problems The present inventors have conducted intensive studies in view of these problems, and as a result, it has been found that one of the causes of the whitening phenomenon in a water bath is a surfactant, particularly a lipophilic surfactant. And, even if the surfactant was excluded, it was found that the formulation could be made with the organosiloxane elastomer spherical powder. That is, the present invention resides in a cosmetic comprising an organosiloxane elastomer spherical powder, an ultraviolet ray protective component, and substantially no surfactant.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The organosiloxane elastomer spherical powder in the present invention is a spherical elastic powder composed of a three-dimensionally crosslinked polymer having an organosiloxane skeleton. And Corning Silicone's Trefill E-505C, Trefill E-506C, Trefill E-507, and the like.
The organosiloxane elastomer spherical powder may contain silicone oil such as dimethylpolysiloxane and methylphenylfolisiloxane in the particles. The average primary particle diameter of the organosiloxane elastomer spherical powder is preferably in the range of 0.1 to 20 μm in order to exhibit the effects of the present invention. The surface of the organosiloxane elastomer spherical powder is treated with, for example, silicone treatment, silicone resin treatment, silane treatment, inorganic oxide treatment, metal soap, resin treatment, adhesive treatment, fluorine compound treatment, N-acylated lysine treatment, mechano Surface treatment such as chemical treatment may be performed.

The organosiloxane elastomer spherical powder used in the present invention can be used as a silicone elastomer spherical powder kneaded paste which has been previously kneaded or wet-pulverized to improve the feel of cosmetics. This is preferable because a more uniform coating film can be formed and the texture and wrinkles can be more concealed. For example, the organosiloxane elastomer spherical powder may be converted into a paste using a kneading device or a wet pulverizing device in advance with a volatile oil agent and / or a non-volatile oil agent.

Examples of volatile oils include cyclic silicones, low molecular weight linear silicones, light liquid isoparaffins, next-generation fluorocarbons, perfluoropolyethers, alcohols, petroleum ethers, terpenes, and the like.
Examples of the non-volatile oil agent include liquid, solid, and paste at room temperature, which is not a problem as long as it is a conventionally known raw material. Examples thereof include silicone oil, ester oil, polar oil, oil and fat, and fluorine-based oil. Is mentioned. Further, those which are used by dissolving them in another oil agent such as trimethylsiloxysilicic acid can also be used. Of these, silicone oils such as cyclic silicone, low-molecular linear silicone, dimethylpolysiloxane and methylphenylpolysiloxane are particularly excellent in compatibility with the organosiloxane elastomer spherical powder, and a paste with higher transparency can be obtained.

When the organosiloxane elastomer spherical powder is changed into a paste using a kneading apparatus or a wet pulverizing apparatus, a roll mill, an extruder (a continuous extrusion kneading apparatus), a bead mill, a sand mill, a micros (Nara Machinery Works) It is preferable to use a wet-medium pulverizing device such as extruder or roll mill.

The mixing ratio (weight ratio) of the organosiloxane elastomer spherical powder used in the present invention and the above oil agent is preferably in the range of 3:97 to 80:20, particularly preferably 25:75 to 60. : 40. When the mixing ratio of the organosiloxane elastomer spherical powder is 3
If the amount is less than 80% by weight, it is difficult to obtain the effect of the elastomer, and if it exceeds 80% by weight, the effect of kneading may not be obtained.

The ultraviolet ray protective component used in the present invention is an inorganic or organic ultraviolet ray protective component. Inorganic UV protection components include titanium oxide, particulate titanium oxide, zinc oxide, particulate zinc oxide, plate-like zinc oxide, flaky zinc oxide, alumina-treated particulate titanium oxide, silica-treated particulate titanium oxide, and silicon carbide. Yes, the surface is conventionally known various surface treatments, for example, silicone treatment,
Silane treatment, silica treatment, fluorine compound treatment, oil agent treatment, metal soap treatment, wax treatment, N-acylated lysine treatment, water-soluble polymer compound treatment, resin treatment, metal oxide treatment, plasma treatment, mechanochemical treatment, viscosity It does not matter whether or not the agent treatment is performed. In particular, as the inorganic UV protection component, fine particle titanium oxide and fine particle zinc oxide are preferable, and more preferably, the surface thereof is subjected to a silicone treatment, a silane treatment, an alumina treatment, and a silica treatment. Best to achieve.

Examples of organic UV protection components include, for example, 2-ethylhexyl paramethoxycinnamate, 2-ethylhexyl paradimethylaminobenzoate, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy Benzophenone-5-sulfuric acid, 2,2'-
Dihydroxy-4-methoxybenzophenone, p-methoxyhydrocinnamic acid diethanolamine salt, paraaminobenzoic acid (hereinafter abbreviated as PABA), homomenthyl salicylate, methyl-O-aminobenzoate, 2-ethylhexyl-2-cyano-3,3- Diphenyl acrylate, octyl dimethyl PABA, octyl methoxycinnamate, octyl salicylate, 2-phenyl-benzimidazole-5-sulfate, triethanolamine salicylate, 3- (4-methylbenzylidene) camphor, 2,4
-Dihydroxybenzophenine, 2,2 ', 4,4'-
Tetrahydroxybenzophenone, 2,2′-dihydroxy-4,4′-dimethoxybenzophenone, 2-hydroxy-4-N-octoxybenzophenone, 4-isopropyldibenzoylmethane, butylmethoxydibenzoylmethane, 4- (3,4 -Dimethoxyphenylmethylene) -2,5-dioxo-1-imidazolidine 2-ethylhexyl propionate and polymer derivatives thereof;
Silane derivatives and the like. When these organic UV protection components are used in combination with an inorganic UV protection component, they are effective in improving the UV protection ability of the product.

In order to achieve the present invention, the proportion of the organosiloxane elastomer spherical powder in the cosmetic of the present invention is in the range of 0.3 to 70% by weight based on the total amount of the cosmetic. Preferably, more preferably 1 to
It is in the range of 30% by weight.

The ratio of blending the ultraviolet ray protective component is preferably in the range of 0.1 to 50% by weight based on the total amount of the cosmetic, in order to achieve the present invention, and more preferably 0.5. ３０30% by weight.

The cosmetic of the present invention contains a surfactant which is a component having surface activity such as an anionic surfactant, a cationic surfactant, a nonionic surfactant, and an amphoteric surfactant. Substantially not included. The term "substantially free of a surfactant" refers to a cosmetic that does not contain a surfactant such as an emulsifier, a dispersant, a solubilizer, and a liposome-forming agent. In the present invention, a component having the ability to surface-treat a powder, change its surface activity, and change the powder surface to hydrophilic or hydrophobic, is used as a surfactant as long as it is used for powder surface treatment. Does not correspond. Examples of the surfactant include a synthetic surfactant and a natural surfactant, such as a fatty acid salt, a glycerin monoalkyl ester monosulfate, a protein / fatty acid condensate, an alkyl sulfate, a POE alkyl ether sulfate, Monoalkyl sulfosuccinates, α-olefin sulfonates, anionic surfactants such as polyether-modified silicones,
Cationic surfactants such as amine salt type and quaternary ammonium salt type, nonionic surfactants such as POE alkyl ether, polyalkylene oxide, alkanolamide and amine oxide, amphoteric type such as imidazoline type, alkyl betaine type and sulfobetaine type Surfactants and the like.

In the present invention, as components other than the organosiloxane elastomer spherical powder and the ultraviolet protection component, powders (pigments, pigments, resins) or oils usually used in cosmetics,
Fluorine compounds, resins, antioxidants, thickeners, preservatives, fragrances,
Components such as a humectant, a physiologically active component, salts, a solvent, a chelating agent, a neutralizing agent, and a pH adjuster can be simultaneously added.

Examples of the powder include dyes such as Red No. 104, Red No. 201, Yellow No. 4, Blue No. 1 and Black No. 401, lake dyes such as Yellow No. 4 Al Lake, Yellow No. 203 Ba Lake, nylon Powder, silk powder,
Urethane powder, Teflon powder, silicone powder, polymethylsilsesquioxane, cellulose powder, chitin, chitosan, polymers such as calcium alginate, yellow iron oxide, red iron oxide, black iron oxide, chromium oxide, carbon black, ultramarine, Colored pigments such as dark blue, white pigments such as titanium oxide and cerium oxide, extender pigments such as talc, mica, sericite and kaolin, pearl pigments such as mica titanium, barium sulfate, calcium carbonate, magnesium carbonate, aluminum silicate, magnesium silicate And inorganic powders such as silica and alumina, fine iron oxide particles, bentonite, smectite, and boron nitride. The shape and size of these powders are not particularly limited.

The above-mentioned powder may be subjected to various conventionally known surface treatments, for example, silicone treatment, silane treatment, fluorine compound treatment, oil treatment, metal soap treatment, wax treatment, N
-An acylated lysine treatment, a water-soluble polymer compound treatment, a resin treatment, a metal oxide treatment, a plasma treatment, a mechanochemical treatment, a tackifier treatment or the like may or may not be performed.

Examples of oils include higher alcohols such as cetyl alcohol, isostearyl alcohol, lauryl alcohol, hexadecyl alcohol, octyl dodecanol, fatty acids such as isostearic acid, undecylenic acid and oleic acid, glycerin, sorbitol, ethylene glycol, and the like. Polyhydric alcohols such as propylene glycol and polyethylene glycol, myristyl myristate, hexyl laurate, decyl oleate, isopropyl myristate, hexyldecyl dimethyloctanoate, glyceryl monostearate, glyceryl diethyl phthalate,
Esters such as ethylene glycol monostearate and octyl oxystearate, hydrocarbons such as liquid paraffin, petrolatum, squalane, waxes such as lanolin, reduced lanolin, carnauba wax, mink oil, cocoa butter,
Fats and oils such as coconut oil, palm kernel oil, camellia oil, sesame oil, castor oil, and olive oil, and ethylene / α-olefin / co-oligomers.

Examples of other types of oils include, for example, dimethylpolysiloxane, methylhydrogenpolysiloxane, methylphenylpolysiloxane, alkyl-modified organopolysiloxane, terminal-modified organopolysiloxane, fluorine-modified organopolysiloxane, Examples include silicone compounds such as amodimethicone, amino-modified organopolysiloxane, silicone gel, acrylic silicone, trimethylsiloxysilicic acid, and silicone RTV rubber; and fluorine compounds such as perfluoropolyether, pitch fluoride, fluorocarbon, and fluoroalcohol.

Of these, silicone resins such as a fluorine-modified organopolysiloxane resin, trimethylsiloxysilicic acid, and acrylic silicone graft copolymer are preferred because the feel when using the cosmetic and the durability of the cosmetic effect are further improved.

The silicone resin is a solid or paste-like compound at 25 ° C. and is a water-insoluble substance. Trimethylsiloxysilicic acid, which is generally called MQ resin or MDQ resin, is disclosed in -1
And fluorinated organopolysiloxane resins having a fluorinated alkyl chain described in, for example, US Pat. No. 2431 and acrylic silicone graft copolymers. These silicone resins are used in a state of being dissolved in a solvent such as cyclic silicone. Is preferred. When a silicone resin is added to the cosmetic of the present invention, the amount is preferably 0.1 to 40% by weight, more preferably 0.5 to 10% by weight, based on the total amount of the cosmetic.

Examples of the solvent include purified water, ethanol, light liquid isoparaffin, lower alcohol, ethers, LPG, fluorocarbon, N-methylpyrrolidone, fluoroalcohol, perfluoropolyether,
Next-generation chlorofluorocarbon, volatile silicone and the like can be mentioned.

In the cosmetic of the present invention, it is preferable to use an antioxidant in combination in order to prevent deterioration of other components due to photocatalytic activity such as zinc oxide powder. Examples of the antioxidant include: For example, tocopherols, SOD, phenols, terpenes, butylhydroxytoluene,
Vitamin C, vitamin E, catechins, glucose, hyaluronic acid, β-carotene, tetrahydrocurcumin,
Conventionally known substances such as tea extract, sesame extract, anthocyanins, and plant antioxidants such as glycosides can be used.

Examples of the cosmetics of the present invention include makeup cosmetics such as foundation, white powder, eyeshadow, eyeliner, teak, lipstick, and the like, and basic cosmetics such as calamine lotion, sunscreen agent, makeup base material and the like. However, among them, a sunscreen agent, a makeup base material, and a foundation are most suitable because the effects of the present invention can be maximized.

The dosage form of the cosmetic of the present invention may be a two-layer,
Conventionally known dosage forms such as gel, spray, mousse, oil, and solid forms can be used. In particular, in the case of a sunscreen agent, as described above, by using an oil agent such as a volatile silicone such as a cyclic silicone or a low-molecular-weight linear silicone, the organosiloxane elastomer spherical powder is paste-like or gel-like. A gel-like material in which an inorganic ultraviolet protection component or the like is physically dispersed in the system is preferable.

[0026]

The present invention will be described in detail below with reference to examples and comparative examples. In addition, methods for evaluating various properties of the cosmetics of Examples and Comparative Examples are described below.

(1) Sensory Property Test The feel at the time of application of the product was examined by 10 professional inspectors.
5 if the respondents answered that the feel was smooth and good
On the other hand, when the respondents answered that the feel was poor or the spread was poor, the score was 0, and the score was evaluated on a 4-point scale. The total score of each panelist was used as the evaluation result. Therefore, the higher the score,
This indicates that the evaluation is high.

(2) Sustainability of Cosmetic After using the cosmetics of Examples and Comparative Examples, a commercially available lasting type foundation is applied thereon.
The long-lasting makeup was evaluated. The evaluation was performed according to the sensory characteristic test (1). Therefore, the higher the score, the higher the evaluation.

(3) Evaluation of whitening during bathing The cosmetics of the examples and comparative examples were used by 10 professional inspectors, and were allowed to work freely in a pool. I checked if it felt noticeable. 5 points when the whiteness is not conspicuous, and 0 points when the whiteness is conspicuous.
The evaluation results were based on the total score of each panelist. Therefore, the higher the score, the higher the evaluation.

(4) UV Protection Effect The UV protection effect of the prototype (cosmetic) was evaluated using six specialized panelists. During the day, tennis was played outdoors, and the state of sunburn was evaluated according to the evaluation criteria shown in Table 1. The evaluation result was the sum of the scores of all panelists. Therefore, the higher the score, the higher the UV protection effect.

[0031]

[Table 1]

In the following, formulation examples of the present invention are shown. Trebule E-507 grade manufactured by Dow Corning Toray Silicone Co., Ltd. was used as the organosiloxane elastomer spherical powder. As the silicone paste, one obtained by kneading 40 parts by weight of Trefil E-507 and 60 parts by weight of methylphenylpolysiloxane using a biaxial extruder was used. As the ultraviolet ray protective component, fine particle titanium oxide was obtained by treating silica-alumina-treated spherical titanium oxide having a diameter of 17 nm with octylsilane, and fine-particle zinc oxide was prepared by converting silica-treated fine particle zinc oxide having a diameter of 30 nm into methylhydrogen polystyrene. Those treated with siloxane were used. As silicone resin,
A 50 wt% cyclic silicone pentamer solution of trifluoropropyl-modified MQ resin was used. The unit in the formulation is% by weight.

Examples 1 and 2 A sunscreen was prepared according to the following formulation.

[0034]

[Table 2]

After the component A of Example 1 was roughly mixed, the mixture was wetted using a wet grinding device Micros (manufactured by Nara Machinery Works).
The pulverization was performed at 1000 rpm for 10 minutes. Then, after roughly mixing the pulverized product and the component B,
For 5 minutes, and filled in a container to obtain a product. Further, in Example 2, a product was prepared and prepared in the same manner as in Example 1 except that the component B was not blended.

Comparative Example 1 A sunscreen was prepared according to the following formulation. In addition, polyether-modified silicone (KF-6017 manufactured by Shin-Etsu Chemical Co., Ltd.) was used as a surfactant.

[0037]

[Table 3]

After the component A is roughly mixed, the mixture is subjected to 1000 rpm using a wet grinding device Micros (manufactured by Nara Kikai Seisakusho).
For 10 minutes. Then, after the pulverized product and the component B were roughly mixed, pulverized at 500 rpm for 5 minutes and filled into a container to obtain a product.

Example 3 A makeup base was prepared according to the following formulation without the use of an organic UV protection component. The fine particle titanium oxide dispersion was prepared by mixing 50 parts by weight of fine particle titanium oxide with cyclic silicone (5 parts).
50 parts by weight using a bead mill and slurried.

[0040]

[Table 4]

After mixing the components with a homomixer, the mixture was filled in a container to obtain a product.

Comparative Example 2 A cosmetic base material was prepared according to the following formulation. Incidentally, the same fine particle titanium oxide dispersion as in Example 2 was used.

[0043]

[Table 5]

The components were mixed by a homomixer and filled in a container to obtain a product.

Table 6 shows the evaluation results of each of the examples and comparative examples.

[0046]

[Table 6]

From the results shown in Table 6, it was found that each of the examples of the present invention had better performance for each evaluation item than each of the comparative examples.

[0048]

As described above, the cosmetic of the present invention, which contains an organosiloxane elastomer spherical powder and an ultraviolet ray-protecting component and contains substantially no surfactant, has a good feel and a long lasting cosmetic effect. It is clear that it has excellent whitening prevention effect and ultraviolet protection effect when bathing.

Claims (2)

[Claims] 1. A cosmetic comprising an organosiloxane elastomer spherical powder and an ultraviolet protection component, and substantially free of a surfactant. 2. An organosiloxane elastomer spherical powder, an ultraviolet protection component, and a silicone resin,
Cosmetics characterized by substantially not containing a surfactant.