JPH11158036A - Cosmetic and makeup - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a cosmetic presenting nice appearance without making skin texture and wrinkles noticeable, by formulating a specific highly cohesive titanium oxide and silicone elastomer spherical powder. SOLUTION: This cosmetic is obtained by formulating (A) pref. 0.5-50 wt.% of highly cohesive titanium oxide with anatase crystal form, having a primary particle size of 0.001-0.15 μm and a secondary particle size of 0.6-2.0 μm and (B) pref. 0.3-70 wt.% of silicone elastomer spherical powder (three-dimensionally crosslinked-type silicone powder aggregate with the primary particle of spherical shape, e.g. Torayfil E-507). By the way, use of the component B as a kneaded paste prepared by being subjected to kneading treatment beforehand improves touch feeling, forms a uniform coating film, and further improves texture/ wrinkle-hiding effect.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cosmetic that gives a beautiful appearance by hiding skin texture and wrinkles by blending titanium oxide having a transparent white color and spherical particles of a silicone elastomer. The present invention relates to a cosmetic method for giving an appearance.

[0002]

2. Description of the Related Art Conventionally, titanium oxide used in cosmetics is a pigment-grade titanium oxide (primary particle size 0.15 to 0.3 μm) for concealment as a white pigment, and ultrafine particles for protection against ultraviolet rays. Titanium oxide (primary particle size 0.01 to
(0.05 μm). Under these circumstances, according to Japanese Patent Application Laid-Open No. 9-221411, a titanium oxide having a primary particle diameter in a range between 0.10 μm and 0.14 μm or less in the intermediate region between pigment-grade titanium oxide and ultrafine titanium oxide ( Hereafter, it is disclosed that titanium oxide having an intermediate particle size) has an appropriate finish and a natural hiding power. When a reproduction experiment is performed by the method described in the publication, the white beauty of titanium oxide is
Although it is superior to conventional pigment-grade titanium oxide, it is bluish, though not as high as ultrafine titanium oxide, and there is a limit to its frequent use as a hiding material. For this reason, by coloring the intermediate-grain titanium oxide to yellow, the titanium oxide loses its bluish color and can form a natural skin color.

On the other hand, as proposed in Japanese Patent Application Laid-Open No. Hei 9-71509, it is known that a cosmetic containing a silicone elastomer spherical powder has a matting effect and an effect of hiding wrinkles. This is an effect that optically blurs fine irregularities on the skin, but since silicone elastomer spherical powder alone does not have the effect of hiding skin problems such as spots, it is generally used with silicone elastomer spherical powder. And a pigment having a hiding power.

[0004]

When the optical properties of the concealing pigment exceed the effects of the silicone elastomer spherical powder, there is a problem that the texture and wrinkles become conspicuous. Required the development of suitable hiding pigments. On the other hand, when conventional titanium oxide was used as the hiding pigment, there were some problems such as noticeable texture and wrinkles and bluish whiteness, and the optical characteristics were not suitable.

[0005]

The present inventors have conducted intensive studies to solve these problems, and as a result, have found that the primary particle diameter is 0.001 to 0.15 μm and the secondary particle diameter is 0.6 to 0.6 μm.
It has been found that an anatase-type titanium oxide having a thickness of 2.0 μm gives a natural and appropriate white color without coloring, and has an ultraviolet protection ability. The present inventors have found that a cosmetic in which the titanium oxide and the silicone elastomer spherical powder are blended together shows a beautiful coating color without any noticeable texture and wrinkles, and completed the present invention. Furthermore, when a white cosmetic was produced without adding a coloring agent other than white, it was found that a more beautiful finish could be obtained, particularly as a makeup base material or a correction material. That is, according to the present invention, the primary particle diameter is 0.1.
001-0.15 μm, and the secondary particle diameter is 0.6-2.
It is a cosmetic comprising 0 μm, a strongly cohesive titanium oxide having an anatase crystal form, and a silicone elastomer spherical powder.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The strongly cohesive titanium oxide used in the present invention has a primary particle diameter of 0.001 to 0.15 μm, a secondary particle diameter of 0.6 to 2.0 μm, and a crystal form of anatase. Is a strongly cohesive titanium oxide. The strongly cohesive titanium oxide is one which is not easily disintegrated into primary particles even when mechanically dispersed under the conditions usually used industrially, and most of the particles remain as secondary particles. Since the light scattering ability is determined by the state dispersed in the medium, that is, the secondary particle diameter, when the secondary particle diameter is in the above range, a sense of transparency to visible light occurs, and like the ultrafine titanium oxide. Since blue light is not scattered preferentially, a natural color tone without bluish tinge is given. Furthermore, the specific surface area is large in accordance with the primary particle diameter, even though it is strongly cohesive, so that the ultraviolet ray absorbing ability is considerably higher than when the secondary particle diameter is almost the same and the primary particle diameter is large.

In the present invention, the primary particle size is determined by the following method. First, 0.5 g of powder is pulverized for 10 minutes with an Ishikawa stirring stirrer (manufactured by Ishikawa Plant), and a transmission electron micrograph is taken. From that photo,
The primary particle diameter is measured with a Particle Analyzer (manufactured by Carl Zeiss Co., Ltd.), and the calculated weight average diameter is defined as the primary particle diameter. Next, regarding the secondary particle size, this is achieved by dispersing the powder in water and using a laser diffraction /
It is represented by the median diameter measured by a scattering type particle size distribution device LA-910. Here, in order to disperse the powder in water, sodium hexametaphosphate is dissolved in ion-exchanged water to form a 1.0% aqueous solution.
g and 17.0 g of powder into 40 g of 0.5 mm zircon beads
Together with a 140 cc glass mayonnaise bottle and a paint shaker dispersion for 5 minutes before measurement. In addition, even when the secondary particle diameter of the pigment titanium oxide or the ultrafine titanium oxide is obtained by this method, the secondary particle diameter is not always the same as the primary particle diameter, and the value of the agglomerated particles may be obtained. Only two or three particle diameters are agglomerated, which is 0.5 μm or less.

The particle size is determined by the above method. The strongly cohesive titanium oxide used in the present invention has a primary particle size of 0.001 to 0.15 μm, preferably 0.01 to 0.15 μm.
1 μm and a secondary particle diameter of 0.6 to 2.0 μm. When the primary particle size exceeds the above range, it is difficult to obtain a highly cohesive titanium oxide, and the ultraviolet absorbing ability is reduced. When the primary particle diameter is less than 0.001 μm, the crystallinity of titanium oxide is deteriorated, and the original physical properties of titanium oxide are impaired. On the other hand, if the secondary particle diameter is less than 0.6 μm, it has the same concealing property as the pigmented titanium oxide, and the appropriate transparency and natural feeling of the strongly cohesive titanium oxide cannot be obtained. Further, those having a secondary particle size of more than 2.0 μm are substantially difficult to obtain, and are liable to be broken and hardly to have strong cohesiveness.

The above is a general description of the characteristics of the strongly cohesive titanium oxide used in the present invention. An index that expresses this characteristic more specifically and simply will be described. That is, the strongly cohesive titanium oxide used in the present invention, when a titanium oxide-containing coating film is prepared by the following method and measured with a color difference meter,
The L value is 35 to 50, and the b value is -10 to 0.

[Method of Making Titanium Oxide-Containing Coating Film and Measuring Coating Color] Ink-making adjustment method <Mill base>-Using 140 cc glass mayonnaise bottle-Titanium oxide sample 10.0 g Veccosol J-524-IM-60 (*) 12.0 g Solvent (4/1 = xylol / n-butanol) 0 g 0.5 mm zircon beads 60.0 g Paint shaker dispersed for 10 minutes <stabilization> Mill base 34.0 g Beccosol J-524-IM-60 12.0 g Paint shaker 5 minute dispersed <let down> Stabilized product 2.3 g Beccosol J -524-IM-60 16.9 g 20% NC clear lacquer 23.2 g DBP (di-n-butyl phthalate) 1.1 g Cellosolve acetate 0.8 g Paint shaker 5 minutes dispersion. (*) Alkyd varnish manufactured by Dainippon Ink and Chemicals, Inc. (**) 20% NC clear lacquer 1 / 2RSNC (75% IPA wet) 26.7% by weight Xylol 12.2% by weight n-butanol 9. 8% by weight Ethyl acetate 25.6% by weight Butyl acetate 6.5% by weight MIBK 19.2% by weight << Coating constant >> Alkyd / NC / DBP = 9/4/1 P / B = 3 PHR

2. Coating film preparation and coating color measurement method After coating (8 μm film thickness after drying) on a morest chart paper with an applicator, the color on the black background of the coating film obtained by natural drying is measured with a color difference meter (SM manufactured by Suga Test Instruments Co., Ltd.). The color is measured with a color computer SM-5).

Compared with other materials by this method, pigment titanium oxide generally has a large hiding power and a high whiteness, so that the L value exceeds 50, and ultrafine titanium oxide has a blue light. The b value becomes less than -10 due to scattering.

The strongly cohesive titanium oxide used in the present invention has at least one kind selected from the group consisting of Al, Si, Zr, Ti and Zn on the surface of the particles for the purpose of suppressing solid catalyst activity and photocatalytic activity. The hydrated oxide and / or oxide may be coated, and simultaneously with these treatments,
Or alone, at least one selected from the group consisting of silicone compounds, silanes, metal soaps, fluorine compounds, water-soluble polymer compounds, N-acylated lysine, polyols, acrylic resins, methacrylic resins, styrene resins, urethane resins, and the like. Organic substances may be coated. By these surface treatments, improvement of wettability, impartation of sebum resistance, and improvement of dispersibility can be appropriately performed. Among them, silicone compounds such as methylhydrogenpolysiloxane, trimethylsiloxysilicic acid, fluoroalkyl / polyoxyalkylene co-modified silicone, silanes such as octyltriethoxysilane, metal soaps such as zinc stearate, perfluoroalkylphosphoric acid Diethanolamine salts, Teflon, fluorine compounds such as perfluoroalkylsilane, deoxyribonucleic acid, water-soluble polymer compounds such as hyaluronic acid, those treated with N-acylated lysine such as N-lauroyl lysine, It is particularly preferable because the above characteristics are characteristic.

As a method for producing the strongly cohesive titanium oxide used in the present invention, for example, the following two-stage method can be used. A step of heating and hydrolyzing the aqueous solution of titanyl sulfate in the presence of a nucleus A step of calcining the hydrolysis product at a temperature of 600 to 900 ° C. Titanyl sulfate as a starting material is usually produced by reacting ilmenite ore with sulfuric acid. be able to. This is called digestion in the titanium oxide industry, but not limited to ilmenite ore, for example, hydrous titanium oxide may be digested. After diluting this product with water and removing impurities as necessary, hydrolysis is performed by heating. At this time, nuclei, which are microcrystals of titanium oxide, are added for the purpose of accelerating the hydrolysis reaction and adjusting the particle size and crystallinity. The hydrolysis product thus obtained is filtered, washed if necessary, and then calcined at 600 to 900 ° C. If the sintering temperature is lower than this range, the primary particle diameter becomes small but does not cause strong aggregation. Conversely, if the sintering temperature is high, the primary particle diameter becomes too large and the titanium oxide of the present invention cannot be obtained. After this, if necessary, crush,
After sizing, Al, Si, Zr, Ti,
A hydrated oxide and / or oxide such as Zn may be coated.

It is considered that the fact that the titanium oxide used in the present invention is strongly cohesive is mainly derived from the above-mentioned production method. Although the details of the mechanism of the strong cohesion are not always clear, there is a state where the surface energy becomes very large at the stage of crystal growth in the hydrolysis or baking step, and it is considered that the particles are strongly aggregated at that time. .

The silicone elastomer spherical powder used in the present invention is a three-dimensionally crosslinked silicone powder,
It refers to an aggregate of powder whose primary particle shape is spherical. Specifically, trefill E-505C, trefill E-506, trefill E-507 and the like manufactured by Toray Vu Corning Silicone Co., Ltd. correspond thereto, and trefil E-507 in which measures against odor and the like are taken is most preferable. still,
Most of the primary particles of these powders fall within a range of 0.1 to 20 μm as a primary particle diameter.

The silicone elastomer spherical powder used in the present invention may be a conventionally known surface treatment such as silicone treatment, silicone resin treatment, silane treatment, inorganic oxide treatment, resin treatment, adhesive treatment, fluorine compound treatment, mechanochemical treatment. A surface treatment such as a treatment may or may not be performed.

The silicone 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 uniform coating film can be formed and the texture and wrinkles can be more concealed. For example, a method in which a silicone elastomer spherical powder is 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 is mentioned. Examples of volatile oil agents 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, particularly preferred are silicone oils and ester oils such as cyclic silicone, dimethylpolysiloxane, polyether-modified silicone, perfluoroalkyl / polyoxyalkylene co-modified silicone, and silicone resin because of their excellent compatibility with silicone elastomer spherical powder. . When combined with silicone oil, a paste with higher transparency can be obtained.

When the silicone elastomer spherical powder is changed into a paste using a kneading apparatus or a wet pulverizing apparatus, a roll mill, an extruder (continuous extrusion kneading apparatus), a bead mill, a sand mill, a micros (manufactured by Nara Machinery Co., Ltd.) ) Is preferable, but a multi-axial extruder is most preferable when a volatile solvent or non-liquid oil is used, and when a non-volatile oil is used, the crushing strength is high. To a roll mill.

The mixing ratio (weight ratio) of the silicone elastomer spherical powder used in the present invention and the above oil agent is as follows:
The ratio is preferably in the range of 3:97 to 80:20, particularly preferably 25:75 to 60:40. If the mixing ratio of the silicone elastomer spherical powder is less than 3% by weight, it is difficult to obtain the effect of the elastomer, and if it exceeds 80% by weight, the effect of kneading is difficult to obtain.

The proportion of the highly cohesive titanium oxide and the silicone elastomer spherical powder in the cosmetic of the present invention is 0.5 to 50% by weight based on the total amount of the cosmetic. Preferably, the silicone elastomer spherical powder is in the range of 0.3 to 70% by weight, more preferably 1 to 30% by weight of strongly cohesive titanium oxide and 1 to 30% by weight of the silicone elastomer spherical powder.
Range.

In the cosmetic of the present invention, in addition to the above-mentioned strongly cohesive titanium oxide, powders (pigments, pigments, resins), oils, fluorine compounds, resins, surfactants and the like which are usually used in cosmetics
UV protection agents, antioxidants, thickeners, preservatives, fragrances, humectants, biologically active ingredients, salts, solvents, chelating agents, neutralizing agents,
Components such as 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, cellulose powder, polymers such as chitin, chitosan, calcium alginate, yellow iron oxide, red iron oxide,
Colored pigments such as black iron oxide, chromium oxide, carbon black, ultramarine and navy 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 ,
Metal salts such as calcium carbonate, magnesium carbonate, aluminum silicate and magnesium silicate; inorganic powders such as silica and alumina; fine titanium oxide and fine zinc oxide;
Examples thereof include particle iron oxide, alumina-treated fine particle titanium oxide, silica-treated fine particle titanium oxide, bentonite, and smectite. The shape and size of these powders are not particularly limited. Of these, the use of a combination of strongly cohesive titanium oxide and an inorganic UV protection component such as fine particle titanium oxide and fine particle zinc oxide is preferred from the viewpoint of improving the UV protection effect.

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, 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 forms of oils include dimethylpolysiloxane, methylhydrogenpolysiloxane, methylphenylpolysiloxane, polyether-modified organopolysiloxane, and fluoroalkyl / polyoxyalkylene co-modified organopolysiloxane. , Alkyl-modified organopolysiloxane, terminal-modified organopolysiloxane, fluorine-modified organopolysiloxane, amodimethicone, amino-modified organopolysiloxane, silicone compound such as silicone gel, acrylic silicone, trimethylsiloxysilicic acid, silicone RTV rubber, silicone compound such as perfluoropolyether And fluorine compounds such as pitch fluoride, fluorocarbon, fluoroalcohol and fluorinated silicone resin.

As the surfactant, for example, an anionic surfactant, a cationic surfactant, a nonionic surfactant, and a betaine surfactant can be used.

As the solvent, purified water, ethanol, light liquid isoparaffin, lower alcohol, ethers, L
Examples include PG, fluorocarbon, N-methylpyrrolidone, fluoroalcohol, perfluoropolyether, CFC substitute, volatile silicone, and the like.

Examples of the UV absorber which is an organic UV protective agent include, for example, paramethoxycinnamic acid 2
-Ethylhexyl, 2-ethylhexyl paradimethylaminobenzoate, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfate, 2,2'-dihydroxy-4-methoxybenzophenone, p-methoxyhydro Cinnamic acid diethanolamine salt, para-aminobenzoic acid (hereinafter abbreviated as PABA), homomenthyl salicylate, methyl-O-aminobenzoate, 2-ethylhexyl-2-cyano-3,
3-diphenyl acrylate, octyl dimethyl PAB
A, octyl methoxycinnamate, octyl salicylate,
2-phenyl-benzimidazole-5-sulfuric acid, triethanolamine salicylate, 3- (4-methylbenzylidene) camphor, 2,4-dihydroxybenzophenine, 2,2 ′, 4,4′-tetrahydroxybenzophenone, , 2'-Dihydroxy-4,4'-dimethoxybenzophenone, 2-hydroxy-4-N-octoxybenzophenone, 4-isopropyldibenzoylmethane, butylmethoxydibenzoylmethane, 4- (3,4
-Dimethoxyphenylmethylene) -2,5-dioxo-
2-ethylhexyl 1-imidazolidinepropionate,
These polymer derivatives are exemplified. When these ultraviolet absorbers are used in combination with strongly cohesive titanium oxide or an inorganic ultraviolet protective component, they are effective in improving the ultraviolet protective ability of the product.

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, tea extract, sesame extract, anthocyanin, glycoside Conventionally known substances such as plant-based antioxidants such as the body can be used.

Examples of the cosmetics of the present invention include makeup cosmetics such as foundation, white powder, eyeshadow, eyeliner, cheek, lipstick, nail color, emulsions, creams, lotions, calamine lotions, sunscreens, cosmetic bases , Amendment, suntan, after shave lotion, pre-shave lotion, pack, cleansing, facial cleanser, anti-acne cosmetics and other basic cosmetics, hair color, body powder, deodorant, soap, body shampoo, bath salt, perfume, etc. Is mentioned.

The dosage form of the cosmetic of the present invention may be a two-layer,
Conventionally known dosage forms such as a water-in-oil emulsion, an oil-in-water emulsion, a gel, a spray, a mousse, an oil, and a solid can be used. In particular, solids, solid emulsions, gels, water-in-oil emulsions, oil-in-water emulsions, oils, mousses, and the like are preferable as foundation applications.

As the cosmetic of the present invention, a cosmetic having a white appearance, particularly a makeup cosmetic such as a foundation, a makeup base material, and a correction material, without using a coloring agent other than white, exhibits its effect. It is suitable for the case. White cosmetics and the like generally have the effect of correcting the skin color and making the foundation look brighter when used as a makeup base material, but the strongly cohesive titanium oxide and silicone elastomer spherical powder used in the present invention are used. White cosmetics by combination
When used as a makeup base, the effect can be enhanced. In addition, when using the white cosmetics according to the combination of the present invention in combination with other foundations, besides being able to match the foundation color to the skin color of the user, the attachment of the foundation itself is improved, The effect of improving the durability of the makeup can be provided.

That is, as a preferred cosmetic method of the present invention, after using the white cosmetic of the present invention as a makeup base,
A method of performing makeup such as foundation, eyeshadow, teak, filter color, blush, and white powder, and a method of mixing the foundation with the white cosmetic of the present invention at the time of use and using it according to the skin color of the user. .

[0035]

The present invention will be described below in more detail with reference to production examples and examples. In addition, the above-mentioned method was used for the evaluation method of the production example. The cosmetics were evaluated according to the following methods and criteria.

[Evaluation of Sensory Characteristics] The sensory characteristics of the trial product (cosmetics) were evaluated using 20 specialized panelists. Evaluation items were three items: "whether texture and wrinkles are not conspicuous";"whether the appearance is natural and beautiful"; and "whether the feel is excellent". +5 points for "texture and wrinkles are not noticeable", "feels natural and beautiful in appearance", and "excellent feel"
"Skin and wrinkles are conspicuous", "Messy" and "Touch is bad" were assigned 0 points, and the score was evaluated on a four-point scale, and the total score of all members was used as the evaluation result. Therefore, the higher the score, the higher the evaluation.

Production Example 1 (Strongly Cohesive Titanium Oxide) A nucleus obtained by neutralizing titanium tetrachloride with caustic soda was added to an aqueous solution of titanyl sulfate (200 g / l as TiO ₂ ) obtained by digestion of ilmenite ore. After that, the mixture was hydrolyzed by heating at 110 ° C. for 3 hours to obtain an aqueous suspension containing hydrous titanium oxide. This aqueous suspension was filtered and sufficiently washed. The obtained washed cake is 700
By calcining at ℃ for 3 hours, titanium oxide was obtained. (Surface treatment) The titanium oxide was made into an aqueous slurry of 200 g / l, and aluminum sulfate and sodium hydroxide were added to coat the surface of the titanium oxide with hydrous aluminum hydroxide. The surface treatment amount was 5.0% by weight based on TiO _{2 in} terms of Al ₂ O ₃ . Thereafter, the slurry was filtered and washed, and the obtained washed cake was dried at 120 ° C. for 24 hours, and pulverized to obtain an anatase-type strongly cohesive titanium oxide of the present invention.

The highly cohesive titanium oxide of Production Example 1, commercially available ultrafine titanium oxide (rutile type) (sample A), pigment grade titanium oxide (anatase type) (sample B), pigment grade titanium oxide (rutile type) Table 1 shows the results of evaluation of the sample C) and the titanium oxide (rutile type) having an intermediate particle size (sample D). The crystal form of each sample was measured using a powder X-ray diffraction method, and the transmittance was determined by coating each sample with the above-mentioned method, then coating the sample on a cellulose triacetate film, and using a spectrophotometer (Shimadzu Corporation) UV-2200A, with an integrating sphere), and the transmittance at 300 nm was measured. Also,
Sample D was used by synthesizing a sample having a specific surface area of 12.7 m ² / g.

[0039]

[Table 1]

From Table 1, it can be seen that the strongly cohesive titanium oxide used in the present invention has a lower L value of the coating film, that is, a lower hiding power, as compared with the existing pigment-grade titanium oxide (samples B and C). It turns out that the shielding ability is high. In addition, the b value of the coating film is higher than that of ultrafine titanium oxide (sample A),
That is, it turns out that there is little blueness. Further, it can be seen that the concealing power is low and the bluish color is small compared with titanium oxide having an intermediate particle size (sample D).

Example 1 (White oily cosmetic) The strongly cohesive titanium oxide and silicone elastomer spherical powder of Production Example 1 (Trefil E-507 manufactured by Dow Corning Toray Silicone Co., Ltd.) were used to obtain white color according to the formulation in Table 2. An oily cosmetic was prepared.

[0042]

[Table 2]

After the components shown in Table 2 were roughly mixed, they were kneaded and pulverized at 1,300 rpm for 10 minutes using Micros (manufactured by Nara Machinery Co., Ltd.). Further, scraping and rough mixing were performed, and this operation was repeated three times in total, and the obtained solution was filled in a container to obtain a product.

Comparative Example 1 (White oil-based cosmetic) Example 1 was repeated except that the ultrafine titanium oxide (sample A) was blended in place of the strongly cohesive titanium oxide of Example 1.
A product was obtained in the same manner as described above.

Comparative Example 2 (White oily cosmetic) A product was obtained in the same manner as in Example 1 except that the pigment-grade titanium oxide (Sample C) was used instead of the strongly cohesive titanium oxide of Example 1. .

Comparative Example 3 (White oil-based cosmetic) Example 1 was repeated except that the above-mentioned intermediate particle size titanium oxide (sample D) was used instead of the strongly cohesive titanium oxide of Example 1.
A product was obtained in the same manner as described above.

Comparative Example 4 (White oil-based cosmetic) Example 1 was repeated except that silicone-treated sericite was used instead of the silicone elastomer spherical powder of Example 1.
A product was obtained in the same manner as described above.

Example 2 (Foundation) A foundation was prepared according to the formulation shown in Table 3 using the highly cohesive titanium oxide and silicone elastomer spherical powder (Trefle E-507 manufactured by Dow Corning Toray Silicone Co., Ltd.) of Production Example 1. . However, for the silicone elastomer spherical powder, a paste having a mixing ratio (weight ratio) of the silicone elastomer spherical powder and tri (caprylic / capric acid) glycerin of 50:50 was prepared using a roll mill in advance, and the paste-like silicone elastomer was prepared. It was compounded as. The silicone treatment of the strongly cohesive titanium oxide includes methyl hydrogen polysiloxane 3
A weight% heat treatment was performed.

[0049]

[Table 3]

After the components shown in Table 3 were roughly mixed, they were mixed using a roll mill and filled in a container to obtain a product.

Example 3 (Cosmetic Method) After preparing the skin with a lotion, the white oil-based cosmetic of Example 1 was used as a makeup base, and then a commercially available 2-way sebum-resistant powder foundation was used.

Example 4 (Cosmetic Method) After preparing the skin with a lotion, the white oil-based cosmetic of Example 1 and a commercially available Liquid Foundation (W / O type) are mixed with the back of the hand so as to match the skin color of the user. The combined one was used.

Comparative Example 5 (Cosmetic Method) After preparing the skin with a lotion, the white oily cosmetic of Comparative Example 1 was used as a makeup base, and then a commercially available 2-way type sebum-resistant powder foundation was used.

Comparative Example 6 (Cosmetic Method) After preparing the skin with a lotion, the white oil-based cosmetic of Comparative Example 2 was used as a makeup base, and then a commercially available 2-way sebum-resistant powder foundation was used.

Comparative Example 7 (Cosmetic Method) After preparing the skin with a lotion, the white oil-based cosmetic of Comparative Example 3 was used as a makeup base, and then a commercially available 2-way sebum-resistant powder foundation was used.

Comparative Example 8 (Cosmetic Method) After preparing the skin with a lotion, the white oil-based cosmetic of Comparative Example 4 was used as a makeup base, and then a commercially available 2-way sebum-resistant powder foundation was used.

Table 4 shows the evaluation results of Examples 1 and 2 and Comparative Examples 1 to 4 of the cosmetic. Table 5 shows the evaluation results for each makeup method.

[0058]

[Table 4]

[0059]

[Table 5]

From Table 4, it was found that Examples 1 and 2 of the present invention were notable in terms of texture and wrinkles, had a beautiful appearance and were excellent in feel. On the other hand, the cosmetic of Comparative Example 1 in which the silicone elastomer spherical powder and the conventional ultrafine titanium oxide were blended exhibited paleness and appeared to be poorly colored, and the cosmetic of Comparative Example 2 in which pigment-grade titanium oxide was blended. The cosmetics of Comparative Example 3 containing titanium oxide having an intermediate particle diameter were remarkable in texture and wrinkles, but the evaluation was slightly poor due to the cause of bluish whiteness in the cosmetic of Comparative Example 3. Furthermore, in the case of Comparative Example 4 in which only the strongly cohesive titanium oxide was blended without blending the silicone elastomer spherical powder, a strong oily feeling was generated, and the evaluation was poor in all items.

From Table 5, it can be seen that the cosmetic methods of Examples 3 and 4 of the present invention have a beautiful appearance and excellent feel without any noticeable texture and wrinkles. In particular, by using the white cosmetic of the present invention as a makeup base, it is possible to obtain a natural and beautiful cosmetic finish, and by mixing the white cosmetic of the present invention with a foundation, it is possible to match the skin tone of one's own skin. It was confirmed that a cosmetic finish without discomfort was obtained and that the cosmetic effect was excellent in persistence. On the other hand, it can be seen that the evaluation is poor in the case where the conventional cosmetics containing ultrafine titanium oxide or pigment grade titanium oxide are used. Furthermore, in the case of using a cosmetic using titanium oxide having an intermediate particle size, the overall evaluation was high as described above, but the appearance was somewhat uncomfortable. In addition, when only the highly cohesive titanium oxide was blended without blending the silicone elastomer spherical powder, the oily feeling was too strong and the evaluation was poor.

[0062]

As described above, the cosmetic of the present invention, which comprises a highly cohesive titanium oxide and a silicone elastomer spherical powder, has a beautiful appearance and feel without any noticeable skin texture and wrinkles. ing. Furthermore, the cosmetic method using the cosmetic of the present invention can easily provide a natural and beautiful cosmetic finish.

Claims (6)

[Claims] (1) a primary particle diameter of 0.001 to 0.15 μm;
A cosmetic composition comprising a highly cohesive titanium oxide having a m and secondary particle diameter of 0.6 to 2.0 μm and a crystal form of anatase, and a silicone elastomer spherical powder. 2. The primary particle size is 0.001 to 0.15 μm.
m, a secondary particle diameter of 0.6 to 2.0 μm, a cosmetic composition comprising a strongly cohesive titanium oxide having an anatase crystal form and a silicone elastomer spherical powder kneading paste. 3. The primary particle size is 0.001 to 0.15 μm.
m, and the secondary particle diameter is 0.6 to 2.0 μm, and the crystal form is a mixture of strongly cohesive titanium oxide having anatase and a silicone elastomer spherical powder, and the appearance color is white. Cosmetics. 4. The method according to claim 1, wherein when the titanium oxide is used as a coating film,
The cosmetic according to any one of claims 1 to 3, which is a highly cohesive titanium oxide having a value of 35 to 50 and a b value of -10 to 0. 5. A cosmetic method comprising using the cosmetic according to claim 3 as a makeup base and then using a foundation. 6. A cosmetic method comprising using the cosmetic according to claim 3 and a foundation at the time of use.