JP3267508B2 - Silica / cerium oxide composite particles, method for producing the same, resin composition containing the same, and cosmetics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a silica-cerium oxide-based composite particle, a method for producing the same, and an extremely high transparency, stability, safety and high transparency obtained by blending the same. The present invention relates to a resin composition having a UV blocking effect and a cosmetic.

[0002]

2. Description of the Related Art Various measures have been taken for ultraviolet rays to deteriorate plastics. As one of them,
Various ultraviolet ray blocking agents called various organic ultraviolet ray absorbing agents and inorganic ultraviolet ray scattering agents have been developed, and the influence of ultraviolet rays has been reduced by adding these to plastics. Organic UV absorbers include salicylic acid-based, benzophenone-based, benzotriazole-based, and cyanoacrylate-based ones.Recently, however, problems such as insufficient heat resistance and weather resistance and the safety of decomposition products have been raised. ing. For the purpose of solving these problems, fine particles of titanium oxide and fine particle zinc oxide, which are inorganic ultraviolet scattering agents, have been developed. However, new problems such as dispersibility and catalytic action also arise.

[0003] Further, ultraviolet rays are known to have an adverse effect on living organisms. Ultraviolet rays in the UV-B region having a wavelength of 280 to 320 nm cause inflammation such as erythema vesicles on the skin and have a wavelength of 320 to 320 nm. Ultraviolet light in the UV-A region of 400 nm is known to promote melanin production and cause skin browning. As a countermeasure against such adverse effects of ultraviolet rays, various types of sunscreen cosmetics have been known. The UV blocking agents used in these cosmetics are roughly classified into UV absorbers such as cinnamic acid, benzophenone, and dibenzoylmethane, and UV scattering agents such as zinc oxide and titanium oxide. It can be divided into two types. However, these ultraviolet absorbers have problems such as insufficient absorption of ultraviolet light and unfavorable safety from being incorporated when used in large amounts. Furthermore, it has been difficult to increase the transparency of conventional UV scattering agents even if the dispersibility is improved, so that not only the feeling of use is deteriorated but also an unnatural cosmetic finish is caused. Was.

Recently, techniques using a cerium compound as an ultraviolet scattering agent as disclosed in JP-A-6-145645 and JP-A-7-207251 have been proposed. Attempting to do so raises issues with transparency, and these factors
The development of compatible technologies was desired.

[0005]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide silica-cerium oxide composite particles having a high ultraviolet blocking effect and having transparency. It is another object of the present invention to provide a resin composition which can obtain a high ultraviolet blocking effect by applying the silica / cerium oxide composite particles to resin compositions of various dosage forms. It is still another object of the present invention to provide a cosmetic composition which uses the silica / cerium oxide composite particles , has a high ultraviolet blocking effect, is excellent in safety, and has a good feeling in use.

[0006]

[SUMMARY OF Namely, the present invention is silica-cerium oxide composite, characterized in that it is obtained by compounding the amorphous silica of the SiO ₂ 5 to 60 wt% on the surface of cerium oxide particles A particle, a method for producing the same, a resin composition containing the same, and a cosmetic. Hereinafter, the present invention will be described in more detail.

[0007] Silica-cerium oxide composite particles of the present invention, as the SiO ₂ on the surface of cerium oxide particles 5-60
The composite particles are obtained by complexing amorphous silica of about 10% by weight. The composite particles are obtained by simultaneously adding a cerium salt solution and an alkaline solution to water having a liquid temperature of 60 ° C. or less and a pH of 5 or more. > Add the resulting cerium hydroxide slurry to above 80 ° C and add it to the sodium silicate solution and mineral acid solution while maintaining the pH above 9 to form a slurry of amorphous silica, washing with water and filtering after, it can be prepared by how to drying.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail. In order to produce the silica / cerium oxide composite particles of the present invention, first, it is necessary to form a cerium hydroxide slurry and silica. I. Preparation of cerium hydroxide slurry Dissolve cerium carbonate with an acid such as hydrochloric acid or nitric acid, or dissolve cerium chloride or cerium nitrate in water to prepare a cerium salt solution. The concentration of the cerium salt solution at this time may be appropriate, but a higher concentration is advantageous for the production of cerium hydroxide. Further, it is advantageous for the same reason that the pH of this solution is increased to such an extent that cerium hydroxide is not generated. Next, an aqueous solution of an alkali metal hydroxide such as sodium hydroxide or potassium hydroxide or an aqueous ammonia solution having a suitable concentration or an aqueous ammonia solution and a cerium salt solution are stirred with a liquid temperature of 60 ° C.
The hydroxide slurry is formed by dropping at an appropriate speed into water maintained at 5 or more. At this time, it is necessary to maintain the pH of the solution at 5 or more, preferably at 8 or more.

B. Production of amorphous silica A sodium silicate solution prepared by diluting a sodium silicate solution No. 3 with water and a solution obtained by diluting a mineral acid such as hydrochloric acid, nitric acid, and sulfuric acid with water are mixed with the above-mentioned hydroxide slurry at 80 ° C. Amorphous silica is formed by dropping at an appropriate speed onto the heated material. At this time, the liquid pH is maintained at 9 or more. The amount of sodium silicate dripped depends on the amount of C in the slurry.
obtained by conversion as SiO ₂ to eO _2, the proportion of
5-60% by weight is appropriate. It is important to keep the above-mentioned temperature and pH conditions in the reaction for forming amorphous silica, and if it is outside the above range, uniform silica / cerium oxide composite particles cannot be obtained. Subsequently, if the slurry is washed with water, filtered, dried and pulverized, the intended silica / cerium oxide composite particles are obtained.

FIG. 1 shows the results of measuring the light transmittance of various silica / cerium oxide composite particles obtained by the above method. The sample was a measurement blank without silica / cerium oxide composite particles, and the sample was SiO 2. ₂ Silica / cerium oxide composite particles containing 50% by weight, silica / cerium oxide composite particles containing 32% by weight of SiO _2, silica / cerium oxide composite particles containing 10% by weight of SiO ₂ are commercially available high-purity cerium oxide particles. . From this figure, CeO ₂ 100
If cerium oxide particles in the range of weight%, SiO ₂ 1
Compared to silica-cerium oxide composite particles containing 0-50 wt%, poor UV screening effect in the ultraviolet <br/> region of 290~320nm (UV-B), also 400~800n
It can be seen that the transparency in the visible region of m is also poor. By combining 5 to 60% by weight of silica as SiO _{2 with} cerium oxide in this manner, silica / cerium oxide having an excellent ultraviolet blocking effect in the region of 290 to 320 nm and transparency in the visible region of 400 to 800 nm is excellent. Composite particles can be obtained.

FIG. 2 shows silica containing 32% by weight of SiO ₂ .
FIG. 4 shows the results of measuring the light transmittance of a dried product of the cerium oxide composite particles and a product fired at 500 ° C., and the dried product has a slightly better ultraviolet blocking effect in the 290 to 400 nm region. FIG. 3 shows the results of measuring the light transmittance of various inorganic ultraviolet blocking agents. A is a sample without an ultraviolet blocking agent added, and B is a synthetic silica-based ultraviolet blocking agent (CeO _2).
24% by weight, 76% by weight of SiO ₂ ), and C is Si of the present invention.
Silica / cerium oxide composite particles containing 32% by weight of O ₂ , D
Is fine particle zinc oxide and E is fine particle titanium oxide.

FIG. 3 shows that the SiO _{2 of the} present invention is 32% by weight.
It can be seen that the silica-cerium oxide composite particles contained at the same time have a higher ultraviolet shielding effect and transparency in the visible region than other inorganic ultraviolet shielding agents. The above light transmittance is determined by adding 0.4 ml of castor oil to an amount of each sample at an addition ratio of 3.0% based on the solid content of the resin, dispersing the mixture with a Hoover muller (50 rotations × 2), and further clear lacquer. 6m
After adding and kneading the mixture, the solution is placed on a transparent quartz plate at 30 μm.
And a spectrophotometer (UV-22 manufactured by Shimadzu Corporation)
00) Measured.

Next, the resin composition and the cosmetic according to the present invention will be described. Generally, a resin composition is deteriorated by absorbing light in the ultraviolet region of sunlight. As UV protection therefor, silica-cerium oxide double of the present invention
Photodeterioration can be prevented or reduced by incorporating the composite particles into the resin composition. Further, it is possible to prevent or reduce the photodeterioration of the contents covered with the transparent resin composition due to ultraviolet rays.

The term "resin composition" as used herein refers to all resin compositions including synthetic resins and natural resins such as polyvinyl chloride, polypropylene and polycarbonate, as well as paints containing these resins.

Next, the cosmetic according to the present invention will be described. By blending the silica / cerium oxide composite particles described above, the cosmetic of the present invention can have transparency and an excellent ultraviolet blocking effect. As the dosage form of the cosmetic, it can be used for skin care cosmetics such as milky lotions and lotions, makeup cosmetics such as foundations and lipsticks, hair cosmetics and the like, and among them, sunscreen cosmetics are preferred. The blending amount is not particularly limited, but is preferably 0.
1 to 70% by weight.

[0016] When further blended into cosmetics, silica-cerium oxide composite particles having been subjected to surface treatment may be used.
Examples of the surface treatment include metal soap treatment, silicone treatment, dialkyl phosphoric acid treatment, treatment with a compound having a perfluoroalkyl group, amino acid treatment, lecithin treatment, collagen treatment and the like.

In the cosmetic according to the present invention, the effect is remarkable when combined with an ultraviolet absorber and / or an ultraviolet scattering agent. As the ultraviolet absorber, one or more selected from oxybenzone, octyl methoxycinnamate, and 4-tert-butyl-4'-methoxydibenzoylmethane are preferable. The blending amount of the ultraviolet absorber is not particularly limited, but is preferably 0.1 to 40% by weight. As the ultraviolet scattering agent, titanium oxide and / or zinc oxide are preferable, and more preferably, the average particle diameter is 0.1.
Fine particle titanium oxide and / or zinc oxide having a particle size of 05 μm or less. The blending amount of the ultraviolet light scattering agent is preferably from 0.1 to 50% by weight.

Further, the cosmetics of the present invention include components usually used in cosmetics, for example, powders, surfactants, oils, gelling agents, polymers, cosmetics, humectants, pigments, preservatives, fragrances. And the like can be used as long as the effects of the present invention are not impaired.

[0019]

【Example】

(Example 1) 488 g of cerium chloride CeCl ₃ is dissolved in water to prepare 3.3 liter of cerium chloride solution. Also, 237 g of sodium hydroxide NaOH is dissolved in water to prepare 3.3 liter of sodium hydroxide solution. 30
A cerium chloride solution and a sodium hydroxide solution are simultaneously added dropwise to 8.5 liters of water heated to ４０40 ° C. while stirring so that the pH of the reaction solution is 9 to 11 and the temperature is kept at 50 ° C. or lower. After completion of the dropwise addition, the mixture is stirred for 30 minutes to readjust the pH of the reaction solution to 5 or more. The resulting cerium hydroxide slurry is decanted and washed five times with water to prepare a cerium hydroxide slurry. Sodium silicate solution (SiO ₂ content 2
562 g (8.5% by weight) is dissolved in water to prepare 2 liter of sodium silicate solution. 75.8 g of 95% by weight sulfuric acid
Is diluted in water to prepare 2 liters of dilute sulfuric acid solution. While heating and stirring the cerium hydroxide slurry to 80 ° C. or higher,
A sodium silicate solution and a dilute sulfuric acid solution are mixed at a pH of 9
It is dropped simultaneously to keep the above. After completion of the dropping of both solutions, the mixture is stirred for 30 minutes and adjusted with diluted sulfuric acid so that the pH of the reaction solution becomes 7 to 8. This is filtered, washed with water, dried and pulverized to obtain SiO 2
To obtain a silica-cerium oxide composite particle ₂ 32 wt% content.

(Example 2) Silica containing 32% by weight of SiO ₂ obtained in Example 1
The cerium oxide composite particles were added to soft polyvinyl chloride at 0.0.
5,1. 0 and 2.0% by weight, and this was made into a sheet by a heating roll. The light transmittance of these sheets was measured with a spectrophotometer (UV-2200 manufactured by Shimadzu Corporation), and the results in FIG. 4 were obtained. a is a sample without an ultraviolet ray blocking agent , b ,
c and d are silica / oxidation containing 32% by weight of SiO ₂ of the present invention.
0.5% by weight, 1.0% by weight of cerium composite particles
%, 2.0 wt% added sheet thickness 0.23 nm
Met. From this figure, it can be seen that the silica / cerium oxide of the present invention
It was found that the higher the blending ratio of the composite particles , the higher the blocking effect in the ultraviolet region, but maintained high transparency in the visible region.

(Example 3) SiO ₂ obtained in Example 1
Using 32% by weight silica / cerium oxide composite particles, a cream foundation was produced by the following composition and preparation method. Composition: (1) Stearic acid 5.0% by weight (2) Lipophilic glyceryl monostearate 2.5 (3) Cetanol 1.5 (4) Isopropylene glycol monolaurate 2.5 (5) Liquid paraffin 8 0.0 (6) Isopropyl myristate 7.0 (7) Propyl parahydroxybenzoate 0.1 (8) Purified water 47.3 (9) Triethanolamine 1.2 (10) Sorbitol 3.0 (11) Paraoxybenzoate Methyl acid 0.2 (12) Titanium oxide 8.0 (13) Kaolin 5.0 (14) Silica / cerium oxide composite particles 3.0 (15) Bentonite 1.0 (16) Bengala 2.5 (17) Yellow Iron oxide 2.0 (18) Black iron oxide 0.2 Total 100.0% by weight

Preparation method: (12)-(14) and (16)-(18) are mixed well. B. Add (15) to (8) at 80 ° C. and swell well. Next, (9) to (11) are added and dissolved. The mixture of A is added to this and dissolved at 80 ° C. (aqueous phase). C. (1) to (7) are dissolved at 80 ° C. (oil phase). D. Add (oil phase) to (water phase) and emulsify. Then cool and stir to 35 ° C. The cream foundation obtained as described above had a transparent feeling, extended well, and had an excellent ultraviolet blocking effect.

(Production Example 1) 150 g of the silica / cerium oxide composite particles obtained in Example 1 and purified water 20 were placed in a flask.
Add 0 g and heat to 70 ° C. while mixing to form a slurry. To this, 150 g of purified water was added to 6 g of a perfluoroalkyl phosphate diethanolamine salt (manufactured by Asahi Glass Co., Ltd., trade name: Asahigard AG530) to form an emulsion, which was gradually added to the slurry.
After mixing for 1 hour, the liquid was acidified, washed, filtered and dried to obtain 154 g of silica-cerium oxide composite particles treated with a fluorine compound (hereinafter referred to as fluorine-treated composite particles).

(Production Example 2) 150 g of the silica / cerium oxide composite particles obtained in Example 1 and 150 g of isopropyl alcohol were added to a flask and mixed at 70 ° C.
Heat until After adding 3 g of methyl hydrogen polysiloxane (manufactured by Shin-Etsu Chemical Co., Ltd.) and mixing for 1 hour,
After heating under reduced pressure to remove isopropyl alcohol, there were obtained 152 g of silicone-treated silica / cerium oxide composite particles (hereinafter referred to as silicone-treated composite particles).

Example 4 Using the fluorinated composite particles obtained in Production Example 1, a sunscreen emulsion was produced by the following composition and preparation method. Composition: (1) Fluorine-treated composite particles 10.0% by weight (2) Microcrystalline wax 1.0 (3) Beeswax 2.0 (4) Squalane 10.0 (5) Methylpolysiloxane (10CS) 10.0 ( 6) Decamethylcyclopentacyclosiloxane 10.0 (7) Sorbitan sesquioleate 4.0 (8) Polyoxyethylene / methylpolysiloxane copolymer 1.0 (9) Oxybenzone 0.1 (10) 1, 3-butylene glycol 9.0 (11) Preservative appropriate amount (12) Remaining purified water (13) Perfume appropriate amount

Preparation method: (2) to (9) are heated and dissolved, and (1) is added to the mixture to bring the temperature to 70 ° C. B. (10) to (12) are heated and melted to 70 ° C., added to a, and emulsified and mixed. C. (2) After cooling, add (13) and mix to obtain a sunscreen emulsion.

Comparative Example 1 Comparative Example 1 was prepared in the same manner as in Example 4 except that (1) was replaced with fine particle titanium oxide. In Comparative Example 1, a natural finish feeling could not be obtained because the cosmetic film was bluish or white. On the other hand, Example 4 according to the present invention had a transparent feeling, had a good finish, and had an excellent ultraviolet blocking effect.

Example 5 Using the silicone-treated composite particles obtained in Production Example 2, a powder foundation was produced by the following composition and preparation method. Composition: (1) Silicone-treated talc 20.0% by weight (2) Silicone-treated mica Remaining (3) Silicone-treated titanium oxide 12.0 (4) Silicone-treated bengala 1.0 (5) Silicone-treated iron oxide yellow 3. 0 (6) Silicone-treated black iron oxide 0.1 (7) Silicone-treated composite particles 20.0 (8) Silicone-treated zinc oxide 1.0 (9) Squalane 5.0 (10) Glyceryl tri-2-ethylhexylate 0 (11) White petrolatum 1.0 (12) Preservative appropriate amount (13) Flavor appropriate amount

Preparation method: (1) to (8) are mixed with a Henschel mixer. B. (9) to (11), which were mixed by heating, were added to and mixed.
(12) and (13) are added. C. After pulverizing b, press molding is performed to obtain a powder foundation.

Comparative Example 2 Comparative Example 2 was prepared in the same manner as in Example 5, except that (7) was replaced with fine particle titanium oxide. In Comparative Example 2, a natural finish feeling could not be obtained because the cosmetic film was bluish or white. On the other hand, Example 5 according to the present invention was transparent, had a good finish, and was excellent in the ultraviolet ray blocking effect.

(Example 6) SiO ₂ obtained in Example 1
A lipstick was produced using the silica / cerium oxide composite particles containing 32% by weight according to the following composition and preparation method. Composition: (1) Ethylene propylene copolymer 9.0% by weight (2) Microcrystalline wax 5.0 (3) Candelilla wax 3.0 (4) Celesin wax 3.0 (5) Lanolin 10.0 (6) Castor oil 20.0 (7) Isocetyl octoate 26.9 (8) Red 201 No. 2.0 (9) Red 202 No. 1.0 (10) Orange 201 No. 0.1 (11) Silica / cerium oxide composite particles 20. 0

Preparation method: (8) to (11) are mixed and added to a part of (6),
This is mixed and dispersed with a roller. B. (1) to (5), the remainder of (6) and (7) are mixed, and after heating and dissolving, a is added and uniformly mixed. C. Fill the container with b and quench to obtain lipstick.

Comparative Example 3 In Example 6, (11)
Was prepared in the same manner as Comparative Example 3 except that the above was replaced with fine particle titanium oxide. In Comparative Example 3, the color was pale and unnatural,
A healthy lip finish could not be obtained. On the other hand, Example 6 according to the present invention had a transparent feeling, obtained a healthy coloration, and was excellent in an ultraviolet ray blocking effect.

(Example 7) SiO ₂ obtained in Example 1
White powder was produced using the silica / cerium oxide composite particles containing 32% by weight according to the following composition and preparation method. Composition: (1) Silica / cerium oxide composite particles 50.0% by weight (2) Talc 30.0 (3) Sericite 6.0 (4) Remaining kaolin (5) Titanium oxide 3.0 (6) Myristic acid Zinc 2.0 (7) Bengala 0.2 (8) Yellow iron oxide 0.8 (9) Squalane 2.0 (10) Octyl methoxycinnamate 2.0 (11) Preservatives proper amount (12) Fragrance proper amount

Preparation method: (1) to (8) are mixed. B. (9) to (12) are mixed, added to A, and mixed uniformly. C. After crushing b, press molding is performed to obtain a white powder.

Comparative Example 4 The same procedure as in Example 7 was repeated except that (1) was replaced with fine-grain titanium oxide. In Comparative Example 4, a natural finished feeling could not be obtained because the cosmetic film was bluish or white. On the other hand, Example 7 according to the present invention was transparent, had a good finish, and was excellent in the effect of blocking ultraviolet rays.

[0037]

The silica / cerium oxide composite particles of the present invention have excellent ultraviolet-B blocking effect in the ultraviolet-B region with high transparency in the visible region, and are safe and have high heat and chemical resistance. Are better. In addition, resin compositions and cosmetics containing the silica / cerium oxide composite particles of the present invention have excellent ultraviolet blocking effects and high transparency.

[Brief description of the drawings]

FIG. 1 is a curve diagram showing the relationship between light transmittance and wavelength of various silica / cerium oxide composite particles.

FIG. 2 is a curve diagram showing a relationship between light transmittance and wavelength of a dried product and a fired product of silica / cerium oxide composite particles.

FIG. 3 shows ultraviolet light of the silica / cerium oxide composite particles of the present invention.
FIG. 4 is a curve diagram illustrating a line blocking effect and transparency in a visible region.

FIG. 4 is a curve diagram showing light transmittance of a sheet obtained in Example 2 of the present invention.

[Explanation of symbols]

(FIGS. 1 and 2) 1. Sample without addition of ultraviolet ray blocking agent 2. Silica / cell oxide containing 50% by weight of SiO _{2 of the} present invention
Composite particles 3 Silica / ceric oxide containing 32% by weight of SiO _{2 of the} present invention
Composite particles 4 Silica / ceric oxide containing 10% by weight of SiO _{2 of the} present invention
Composite particles 5 Commercial cerium oxide sample 6 Silica / cell oxide containing 32% by weight of SiO _{2 of the} present invention
Composite particles (dry product) 7 Silica / cell oxide containing 32% by weight of SiO _{2 of the} present invention
Um composite particles (500 ° C. calcined product) (Fig. 3) A sunscreen agent not added Sample B synthetic silica-based UV blocker Sample C SiO ₂ 32 wt% containing silica oxide Seri of the present invention
Composite particle D Fine particle zinc oxide sample E Fine particle titanium oxide sample (Fig. 4) a Sample without UV-blocker b Silica / cell oxide containing 32% by weight of SiO _{2 of the} present invention
Sheet containing 0.5% by weight of composite oxide particles c Silica / cell oxide containing 32% by weight of SiO _{2 of the} present invention
Sheet containing 1.0% by weight of composite oxide particles d Silica / cell oxide containing 32% by weight of SiO _{2 of the} present invention
Sheet with 2.0% by weight of composite particles

────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. ⁷ Identification code FI C08K 9/02 C08K 9/02 C08L 101/00 C08L 101/00 (72) Inventor Nobuyoshi Yabe 48-18 Sakaemachi, Kita-ku, Tokyo Inside Kose Research Institute Co., Ltd. (72) Inventor Shigetada Momose 48-18 Sakaemachi, Kita-ku, Tokyo Inside Kose Research Institute Co., Ltd. (72) Inventor Kimitori Hirai 48-18 Sakaemachi, Kita-ku, Tokyo Kose Research Inc. In-house examiner Shinichi Naito (56) References JP-A-6-145645 (JP, A) JP-A-6-145026 (JP, A) JP-A-7-207251 (JP, A) JP-A 8-12961 ( JP, A) JP-A-8-104606 (JP, A) JP-A-8-67867 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61K ^7/ 00-7/48 C01B 33/12 C01F 17/00 C08K 3/22 C08K 3/36 C08K 9/02 C08L 101/00 W I / L (QUESTEL)

Claims (11)

(57) [Claims] 1. Silica / cerium oxide composite particles obtained by compounding amorphous silica of 5 to 60% by weight as SiO _{2 on} the surface of cerium oxide particles. 2. In water maintained at a temperature of 60 ° C. or lower and a pH of 5 or higher,
In addition cerium salt solution and the alkali simultaneously generates cerium hydroxide slurry, which for washing the composite compound slurry obtained by adding a silicate solution and a mineral acid, filtered, Drying
Method for producing a silica-cerium oxide composite particles, wherein to Rukoto. 3. A resin composition comprising the silica / cerium oxide composite particles according to claim 1. 4. A cosmetic comprising the silica / cerium oxide composite particles according to claim 1. 5. The silica / cerium oxide composite particles are further subjected to a surface treatment.
The cosmetic described. 6. The cosmetic according to claim 4, further comprising an ultraviolet absorber and / or an ultraviolet scattering agent. 7. The method according to claim 7, wherein the ultraviolet absorbent is oxybenzone, octyl methoxycinnamate, 4-tert-butyl-4′-.
The cosmetic according to claim 6, wherein the cosmetic is at least one selected from methoxydibenzoylmethane. 8. The content of the ultraviolet absorber is from 0.1 to 40.
The cosmetic according to any one of claims 6 and 7, wherein the cosmetic is (% by weight). 9. The cosmetic according to claim 6, wherein the ultraviolet scattering agent is titanium oxide and / or zinc oxide. 10. The content of the ultraviolet light scattering agent is 0.1 to 5
The cosmetic according to any one of claims 6 to 9, wherein the cosmetic is 0% by weight. 11. The cosmetic according to claim 4, which is a sunscreen cosmetic.