JP2000080021A - Ultraviolet absorbing pigment for cosmetic and cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prepare an ultraviolet absorbing pigment for cosmetics, stable, having high dispersibility, having ultraviolet absorbing effect, and useful for foundation or the like sparingly affecting the skin and having a good feel by making pigment powder for cosmetics include and be covered with an organic ultraviolet absorbing compound through the medium of an organic polymer. SOLUTION: This ultraviolet absorbing pigment for cosmetics is prepared by making (A) pigment powder for cosmetics [pref. tabular inorganic pigment powder (e.g. sericite or the like) or globular pigment powder (e.g. globular silica or the like)] include and be covered with (C) (pref. <=20 wt.%) organic ultraviolet absorbing compound (e.g. 2-ethylhexyl p-methoxycinnamate or the like) through the medium of (B) (pref. <30 wt/%) organic polymer [e.g. poly(methyl methacrylate) or the like]. The pigment is e.g. prepared by dissolving the ingredient B in a solvent such as dichloromethane and then by dissolving the ingredient C in the solution, followed by dispersing the ingredient A in the resultant solution and then by evaporating the solvent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultraviolet-absorbing pigment for cosmetics used in makeup cosmetics such as foundation, eyeshadow, blusher and the like and basic cosmetics such as emulsions and creams, and for cosmetics. The present invention relates to a cosmetic containing an ultraviolet absorbing pigment.

[0002]

2. Description of the Related Art Conventionally, makeup cosmetics such as foundations, eye shadows, and blushers and basic cosmetics such as emulsions and creams have been used in order to improve the ultraviolet absorption, for example, fine titanium oxide, fine zinc oxide and the like. Or an organic ultraviolet absorbing compound or the like is directly mixed.

[0003]

However, these fine particles of titanium oxide and fine particles of zinc oxide have very high surface activity because they are very fine, and if they are used as they are, they easily aggregate to lower the ultraviolet absorption performance. And there is a problem that the feeling of use when blended into cosmetics is reduced. In addition, the fine particle titanium oxide and the fine particle zinc oxide have a problem that they cause deterioration of other organic substances in the cosmetic and cause rough skin.

Further, when an organic ultraviolet absorbing compound is directly blended into a cosmetic, it is very difficult for the organic ultraviolet absorbing compound to be uniformly dispersed in a molecular state in the cosmetic. There is a problem in that the organic ultraviolet absorbing compound does not exhibit the ultraviolet absorbing performance of the organic ultraviolet absorbing compound itself to the maximum because the organic ultraviolet absorbing compound exists locally.
In addition, the organic ultraviolet absorbing compound may come into direct contact with sebum, and there is a risk that the compound is eluted and absorbed by the sebum.

SUMMARY OF THE INVENTION The present invention has been made to solve such problems, and has a stable and high dispersibility, has an excellent ultraviolet absorbing effect, has a small effect on the skin, and has a good touch. It is an object of the present invention to provide an ultraviolet absorbing pigment for cosmetics and a cosmetic containing the ultraviolet absorbing pigment for cosmetics.

[0006]

Means for Solving the Problems and Functions / Effects In order to achieve the above-mentioned object, the cosmetic ultraviolet absorbing pigment according to the present invention is obtained by adding an organic polymer compound as a medium to a pigment powder for cosmetics. The present invention is characterized by including and covering a system ultraviolet absorbing compound.

In the present invention, the surface of the pigment powder for cosmetics is coated with an organic UV-absorbing compound dispersed and covered on a molecular level using an organic polymer compound as a medium. As described above, since the organic ultraviolet absorbing compound is present in a dispersed state, the surface activity is extremely low, and an effect of maximizing the ultraviolet absorbing performance of the organic ultraviolet absorbing compound itself is exhibited. Further, the organic ultraviolet absorbing compound is hardly eluted out of the pigment powder, and does not deteriorate other organic substances even when it is incorporated into cosmetics, and is eluted and absorbed by sebum. There is no effect on the skin, so that there is an effect that the safety is high.

In the present invention, the cosmetic pigment powder is preferably a plate-like inorganic pigment powder. The above-mentioned plate-like pigment powder is obtained by dispersing and covering an organic ultraviolet absorbing compound at the molecular level on the surface of a plate-like inorganic pigment powder often used in cosmetics that can provide a smooth feel as described above. This has the effect of obtaining an extremely high ultraviolet absorption performance without losing the smooth feel of the device.

In the present invention, the cosmetic pigment powder is preferably a spherical pigment powder. In this way, the surface of the spherical pigment powder often used in ordinary cosmetics is dispersed and covered with the organic ultraviolet absorbing compound at the molecular level to maximize the ultraviolet absorbing performance of the organic ultraviolet absorbing compound itself. And the surface activity is reduced. Therefore, even when blended in cosmetics, it is possible to obtain an excellent sunscreen effect with a good feel and because the organic ultraviolet absorbing compound is less likely to elute outside the pigment powder, Deterioration and absorption into sebum can be prevented, and there is an effect that the effect on the skin is small and the safety is high.

[0010] The cosmetic of the present invention is characterized by comprising the above-mentioned ultraviolet absorbing pigment for cosmetics.

According to the present invention, since the ultraviolet absorbing pigment for cosmetics to be blended itself has excellent dispersibility, the cosmetics containing the ultraviolet absorbing pigment for cosmetics can be used for such cosmetics. Higher dispersibility because the organic UV-absorbing compound can be uniformly dispersed in the molecular state, compared to a cosmetic pigment that is a mixture of a pigment powder for a cosmetic that becomes an UV-absorbing pigment and an organic UV-absorbing compound as it is. This has the effect of maximizing ultraviolet absorption performance. Furthermore, since the organic ultraviolet absorbing compound does not directly touch the sebum, it has an effect of little influence on the skin and high safety.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION In the ultraviolet absorbing pigment for cosmetics according to the present invention, titanium oxide, silica, calcium carbonate, zinc oxide, aluminum oxide, magnesium oxide, zirconium oxide,
Examples thereof include magnesium silicate, barium sulfate, red iron oxide, yellow iron oxide, and ultramarine blue. In particular, examples of plate-like inorganic pigment powders include mica, sericite, talc, kaolin, titanium-coated mica, and boron nitride. Examples of the spherical pigment powder include spherical silica, nylon powder, and spherical silicon resin powder.

The organic high molecular compound serving as the medium is, for example, a polymethyl methacrylate resin, an acrylic silicon copolymer resin, a polycarbonate resin, a polystyrene resin, an amorphous resin which can be easily dissolved in an appropriate solvent. Polyarylate resin and the like can be mentioned.

The organic ultraviolet absorbing compound contained and coated in the cosmetic pigment powder includes 2-hydroxy-4-methoxybenzophenone and 2-hydroxy-4-methoxybenzophenone as benzophenones.
5-sulfonic acid, 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid sodium salt, 2,2′-dihydroxy-4,4′-dimethoxybenzophenone,
Sodium 2,2'-dihydroxy-4,4'-dimethoxybenzophenone-5-sulfonate, 2,4-dihydroxybenzophenone, 2,2 ', 4,4'-tetrahydroxybenzophenone, and para-aminobenzoic acid Examples of the system include paraaminobenzoic acid, ethyl paraaminobenzoate, glyceryl paraaminobenzoate, amyl paradimethylaminobenzoate, ethyl paradihydroxypropylbenzoate, and the like.
2-ethylhexyl p-methoxycinnamate, 2-ethoxyethyl 4-methoxycinnamate, and the like, and salicylic acids include 2-ethylhexyl salicylate, phenyl salicylate, homomethyl salicylate, and others. As 2- (2-hydroxy-5-
Methylphenyl) benzotriazole, 4-tert-
Butyl-4'-methoxy-benzoylmethane, urocanic acid, ethyl urocanate, 2-ethylhexyl dimethoxybenzylidene dioxoimidazolidinepropionate and the like. Since these organic UV-absorbing compounds have different absorption wavelength ranges depending on the type, they may be selected as required, and in some cases, two or more types may be combined.

As a suitable solvent for dissolving the organic polymer compound, it is necessary that the organic ultraviolet absorbing compound can be dissolved at the same time. For example, methylene chloride, carbon tetrachloride, 1,1,1-trichloroethane, isopropyl alcohol , Butyl acetate and the like.

In the present invention, the organic polymer compound as a medium is added to the cosmetic pigment powder as a raw material in an amount of 5%.
Preferably up to 0% by weight, more preferably 30% by weight
Up to. When the amount of the organic polymer compound is 30% by weight or more with respect to the cosmetic pigment powder, the organic polymer compound itself precipitates to form an agglomerate, or is covered by the cosmetic pigment powder. This is because, even in this case, the particles tend to fuse with each other due to the organic compound and tend to have a poor feel, and when the content is 50% by weight or more, this state is remarkably caused.

Further, the organic ultraviolet absorbing compound is
It is preferably up to 50% by weight, more preferably 20% by weight, based on the cosmetic pigment powder as a raw material. When the amount of the organic ultraviolet absorbing compound exceeds 20% by weight based on the amount of the cosmetic pigment powder as a raw material, it is difficult to completely include the organic ultraviolet absorbing compound in the organic polymer compound as a medium.
If it exceeds 0% by weight, it will not be completely contained and will be present outside the coating organic polymer compound.

In the method for producing an ultraviolet absorbing pigment for cosmetics according to the present invention, an organic polymer compound as a medium is dissolved in an appropriate solvent so as to have a concentration of 1 to 10% by weight, and a cosmetic as a raw material is dissolved therein. The organic UV absorbing compound is simultaneously dissolved so as to have the desired UV absorbing performance for the pigment powder for use. The pigment powder for cosmetics, which is a raw material, is dispersed therein so as to have a target covering treatment amount. At this time, the volume of the solution in which the organic polymer compound and the organic ultraviolet absorbing compound are dissolved is equal to the bulk of the cosmetic pigment powder as a raw material. Next, the dispersion solution is stirred for a certain period of time, and the solution is completely evaporated by heating or reducing the pressure during the stirring. After being completely evaporated, it is pulverized, if necessary, to obtain the desired ultraviolet absorbing pigment for cosmetics.

In another production method, a pigment powder for cosmetics as a raw material is contained in a solution obtained by simultaneously dissolving an organic polymer compound and an organic ultraviolet absorbing compound. To prepare a slurry solution. By spraying the slurry solution by a spray drying method and instantaneously evaporating the solvent, a desired ultraviolet absorbing pigment for cosmetics can be obtained.

The ultraviolet absorbing pigment for cosmetics obtained in this manner is obtained by using an organic polymer compound in which an organic ultraviolet absorbing compound is dispersed and contained at the molecular level in a pigment powder for cosmetics as a raw material. As a result, it has excellent dispersibility, excellent feel, very low surface activity, and very high ultraviolet absorption performance.

The ultraviolet absorbing pigment for cosmetics according to the present invention can be, for example, treated with silicon, treated with perfluoroalkyldi (oxyethyl) amine phosphate (Japanese Patent Publication No. 5-86).
No. 984), surface treatment such as metal soap treatment and N-lauroyl-L-lysine treatment.

In cosmetics containing the ultraviolet absorbing pigment for cosmetics, oils, powders (pigments, pigments, resins), fluorine compounds, fluorine compounds, and the like usually used in addition to the ultraviolet absorbing pigment for cosmetics are used. Components such as a resin, a surfactant, a viscosity agent, a preservative, a fragrance, a humectant, a physiologically active component, a salt, a solvent, a chelating agent, a neutralizing agent, and a pH adjuster can be simultaneously added.

As the powder, for example, Red No. 104,
Dyes such as Red No. 201, Yellow No. 4, Blue No. 1 and Black No. 401, lake dyes such as Yellow No. 4 aluminum lake and Yellow No. 203 barium lake, nylon powder, silk powder, urethane powder, Teflon powder, silicon powder, Polymers such as cellulose powder and silicone elastomer, yellow iron oxide, red iron oxide, black iron oxide, chromium oxide, carbon black, colored pigments such as ultramarine blue and dark blue, white pigments such as titanium oxide and cerium oxide, talc,
Extender pigments such as mica, sericite and kaolin, pearl pigments such as mica titanium, metal salts such as barium sulfate, calcium carbonate, magnesium carbonate, aluminum silicate and magnesium silicate, inorganic powders such as silica and alumina, and fine particle oxidation Titanium, fine 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.

Examples of the oil agent include cetyl alcohol, isostearyl alcohol, lauryl alcohol,
Higher alcohols such as hexadecyl alcohol and octyldodecanol; fatty acids such as isostearic acid, undecylenic acid and oleic acid; polyhydric alcohols such as glycerin, sorbitol, ethylene glycol, propylene glycol and polyethylene glycol; myristyl myristate; hexyl laurate Decyl oleate, isopropyl myristate, hexyldecyl dimethyloctanoate, glyceryl monostearate, diethyl phthalate,
Esters such as ethylene glycol monostearate and octyl oxystearate; hydrocarbons such as liquid paraffin, vaseline and squalane; waxes such as lanolin, reduced lanolin and carnauba wax; mink oil, cocoa oil, coconut oil, balm kernel oil, camellia And oils, sesame oil, castor oil, olive oil and the like, and ethylene / α-olefin / co-oligomer. Also, methyl hydrogen polysiloxane, dimethyl polysiloxane, methyl phenyl polysiloxane, polyether-modified organopolysiloxane, fluoroalkyl / polyoxyalkylene co-modified organopolysiloxane, alkyl-modified organopolysiloxane, terminal-modified organopolysiloxane, fluorine-modified Silicon compounds such as organopolysiloxane, amodimethicone, amino-modified organopolysiloxane, silicon gel, acrylic silicon, trimethylsiloxysilicic acid, silicon RTV rubber, perfluoropolyether, pitch fluoride, fluorocarbon, fluoroalcohol, fluorinated silicone resin And the like.

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, LPG, fluorocarbon, N-methylpyrrolidone, fluoroalcohol, perfluoropolyether,
Alternative fluorocarbons, volatile silicones and the like can be mentioned.

Specific examples of cosmetics comprising the above-mentioned oils and the like in addition to the cosmetic composite pigments include, for example, foundations, white powders, eye shadows, eye liners,
Makeup cosmetics such as teak, lipstick, nail color,
Emulsions, creams, lotions, calamine lotions, sunscreens, suntans, after-shave lotions, pre-shape lotions, packs, cleansing ingredients, facial cleansers, basic cosmetics such as anti-acne cosmetics, hair colors, body powders, deodorants , Soaps, body shampoos, bath additives, perfumes and the like.

The amount of the ultraviolet absorbing pigment for cosmetics to be blended in the above-mentioned cosmetics is preferably 0.1 to 100% by weight, more preferably 1 to 60% by weight, based on the total amount of the cosmetics. % By weight. Further, the compounding amount of the ultraviolet ray protection component is preferably 0.1 to 50% by weight, and the compounding amount of the antioxidant is preferably 0.001 to 10% by weight.

Examples of the cosmetic formulation include two-layer, water-in-oil emulsion, oil-in-water emulsion, gel,
Conventionally known dosage forms such as spray, mousse, oily, and solid forms can be used. In particular, two-layer, water-in-oil emulsions and gels are preferred for sunscreen applications, and solid, solid emulsions, gels, water-in-oil emulsions and oil-in-water are preferred for foundation applications. Emulsions, oils, mousses and the like are preferred.

The UV-absorbing pigment for cosmetics of the present invention is not limited to the above-mentioned cosmetics, and may be, for example, resin, paint,
It can be used for ink, glass, fiber, paper, etc.

[0031]

EXAMPLES Next, specific production examples, examples and comparative examples of the ultraviolet absorbing pigment for cosmetics and the cosmetic according to the present invention will be described.

(Production Example 1) 2.5 parts by weight of polymethyl methacrylate (number average molecular weight 50,000) was added to 100 parts by weight.
It is completely dissolved in parts by weight of dichloromethane, and 2.5 parts by weight of 2-ethylhexyl p-methoxycinnamate is simultaneously dissolved in this solution, and 50 parts by weight of sericite is added to form a slurry. This slurry solution was put into a mixing / stirring dryer such as a Henschel mixer equipped with a jacketed (steam-heated) vacuum line and stirred for about 30 minutes.
And evaporate the solvent dichloromethane completely under a slight vacuum. Then, it was pulverized with an atomizer to obtain an ultraviolet-absorbing pigment for cosmetics in which p-methoxycinnamic acid-2-ethylhexyl was coated at the molecular level on the surface of sericite using polymethyl methacrylate as a medium.

(Production Example 2) 5 parts by weight of an acrylic silicone copolymer represented by the following chemical structural formula was completely dissolved in 500 parts by weight of 2-propanol, and 2.5 parts by weight of 4- Simultaneously dissolve tert-butyl-4'-methoxybenzoylmethane and 2-ethylhexyl p-methoxycinnamate. 50 parts by weight of sericite is dispersed in this solution to form a slurry. This slurry was sprayed with a spray drier under high pressure to instantaneously evaporate 2-propanol, thereby forming 4-tert-butyl-4'-methoxybenzoylmethane and p-methoxy on the sericite surface using an acrylic silicone copolymer as a medium. A UV-absorbing pigment for cosmetics was obtained, which was coated with 2-ethylhexyl cinnamate at the molecular level.

Embedded image

(Production Example 3) 10 parts by weight of the same acrylic silicone copolymer as that used in Production Example 2 is completely dissolved in 1000 parts by weight of 2-propanol. 5 parts by weight of 4-tert-butyl-
Dissolves simultaneously with 4'-methoxybenzoylmethane and 2-ethylhexyl p-methoxycinnamate. 50 parts by weight of spherical silica (average particle diameter: 8 μm) is dispersed in this solution to form a slurry. This slurry was prepared in the same manner as in Production Example 2 by using 4-tert-butyl-4′-methoxybenzoylmethane and p-methoxycinnamic acid-2-ethylhexyl on the spherical silica surface using an acrylic silicone copolymer as a medium. At the molecular level to obtain an ultraviolet absorbing pigment for cosmetics.

(Production Example 4) 2.5 parts by weight of polymethyl methacrylate (number average molecular weight 50,000) was added to 100 parts by weight.
Dissolve completely in parts by weight of acetone. 2.5
The parts by weight of 2-methoxyhexyl dimethoxybenzylideneoxoimidazolidine propionate are simultaneously dissolved.
50 parts by weight of talc are dispersed in this solution to form a slurry. This slurry solution was treated in the same manner as in Production Example 1 with a UV-absorbing pigment for cosmetics in which talc surface was coated with 2-ethylhexyl dimethoxybenzylideneoxoimidazolidine propionate at the molecular level using polymethyl methacrylate as a medium. Obtained.

Next, the ultraviolet-absorbing pigments prepared in Production Examples 1 to 4 were used in Examples 1 to 4, respectively.
The foundation was adjusted with the following composition.

(Examples 1 and 2) Silicon-treated titanium oxide 10.0 Production Example 1 or 2 (inclusion coated sericite) 65.4 Silicon-treated talc 10.0 Silicon-treated Bengala 0.3 Silicon-treated iron oxide yellow 1 4.5 Carbon black 0.4 Titanium black 0.4 Methylphenyl polysiloxane 2.0 Dimethyl polysiloxane (6 cs) 4.0 Dimethyl polysiloxane (20 cs) 3.0 Dimethyl polysiloxane (10,000 cs) 3.0 Total 100 .0

(Example 3) Silicon-treated sericite 27.0 Silicon-treated mica 12.5 Silicon-treated talc 38.7 Silicon-treated titanium oxide 9.0 Production Example 3 (including coated spherical silica) 5.0 Silicon-treated yellow Iron oxide 2.0 Silicon-treated red iron oxide 0.7 Silicon-treated black iron oxide 0.3 Dimethylpolysiloxane (20cs) 4.8 Total 100.0

Example 4 Siliconized Titanium Oxide 10.0 Production Example 1 (Included Coated Sericite) 65.4 Production Example 4 (Included Coated Talc) 10.0 Siliconized Bengala 0.3 Siliconized Yellow Oxidation Iron 1.5 Carbon black 0.4 Titanium black 0.4 Methyl phenyl polysiloxane 2.0 Dimethyl polysiloxane (6 cs) 4.0 Dimethyl polysiloxane (20 cs) 3.0 Dimethyl polysiloxane (10,000 cs) 3.0 Total 100.0

Next, the organic UV-absorbing compounds as raw materials of the UV-absorbing pigments prepared in the above-mentioned Production Examples 1 to 4 were used as they were in Comparative Examples 1 to 4, respectively. The foundation was adjusted with the following composition so as to obtain the desired composition.

(Comparative Example 1) Silicon-treated titanium oxide 10.0 Silicon-treated sericite 62.4 Silicon-treated talc 10.0 Silicon-treated Bengala 0.3 Silicon-treated yellow iron oxide 1.5 Carbon black 0.4 Titanium black 0 2.4 p-methoxycinnamic acid-2-ethylhexyl 3.0 methylphenylpolysiloxane 2.0 dimethylpolysiloxane (6 cs) 4.0 dimethylpolysiloxane (20 cs) 3.0 dimethylpolysiloxane (10,000) 0 Total 100.0

(Comparative Example 2) Silicon-treated titanium oxide 10.0 Silicon-treated sericite 60.0 Silicon-treated talc 10.0 Silicon-treated Bengala 0.3 Silicon-treated yellow iron oxide 1.5 Carbon black 0.4 Titanium black 0 2.4 4-tert-butyl-4'-methoxybenzoylmethane 2.7 p-methoxycinnamic acid-2-ethylhexyl 2.7 methylphenylpolysiloxane 2.0 dimethylpolysiloxane (6cs) 4.0 dimethylpolysiloxane ( 20cs) 3.0 Dimethylpolysiloxane (10,000) 3.0 Total 100.0

(Comparative Example 3) Silicon-treated sericite 27.0 Silicon-treated mica 12.5 Silicon-treated talc 38.7 Silicon-treated titanium oxide 9.0 Spherical silica 4.3 Silicon-treated yellow iron oxide 2.0 Silicon-treated red iron oxide 0.7 silicon-treated black iron oxide 0.3 4-tert-butyl-4′-methoxybenzoylmethane 0.35 p-methoxycinnamic acid-2-ethylhexyl 0.35 dimethylpolysiloxane (20 cs) 4.8 total 100 .0

(Comparative Example 4) Silicon-treated titanium oxide 10.0 Silicon-treated sericite 62.4 Silicon-treated talc 10.0 Silicon-treated Bengala 0.3 Silicon-treated yellow iron oxide 1.5 Carbon black 0.4 Titanium black 0 2.4 dimethoxybenzylideneoxoimidazolinediethylpropionate-2-ethylhexyl 3.0 methylphenylpolysiloxane 2.0 dimethylpolysiloxane (6 cs) 4.0 dimethylpolysiloxane (20 cs) 3.0 dimethylpolysiloxane (10,000) 3.0 Total 100.0

The ultraviolet absorbing performance of the ultraviolet absorbing pigments or foundations for cosmetics obtained in Production Examples 1-4, Examples 1-4 and Comparative Examples 1-4 was measured. The UV-absorbing pigment or foundation for cosmetics is uniformly applied to the adhesive surface of a scotch tape (manufactured by 3M) (application area is 15 mm × 25 mm),
Thereafter, the weight is measured. Then, a scotch tape on which nothing was applied was placed on the reference side, and a wavelength range of 2 was measured using a spectrophotometer U-bestU-570 manufactured by JASCO Corporation.
The absorption characteristics are measured at 90 to 450 μm, and the absorption performance is quantitatively calculated by dividing the obtained value by the weight and area in the measurement partial region. The absorption performance measured in this way is called a normalized absorbance, and the unit is abs / g / m
a m ^2.

FIG. 1 shows the ultraviolet absorption performance of the ultraviolet absorbing pigments for cosmetics manufactured in Production Examples 1-4, and FIG. 2 shows the ultraviolet absorption of the powder mixed as a foundation in Examples 1-4. FIG. 3 shows the ultraviolet absorption performance of the powders mixed as foundations in Comparative Examples 1 to 4, respectively. Further, Table 1 shows Production Examples 1 to
4, 320n in Examples 1-4 and Comparative Examples 1-4
m, the value of the normalized absorbance at 360 nm is shown.

[0047]

[Table 1]

As shown in FIG. 1, Production Example 1 has a high normalized absorbance in the wavelength range of about 300 to 330 nm which causes sunburn, and Production Examples 2 and 3 show wavelengths which cause sunburn. Manufacturing Example 4 has a high standardized absorbance in the range of about 300 to 330 nm and the wavelength of about 330 to 365 nm that causes skin cancer, and Production Example 4 has a high standardized absorbance in the range of about 330 to 365 nm that causes skin cancer. It is clear that the compound has an optical absorption.

As shown in FIGS. 2 and 3, Example 1 has a higher normalized absorbance in the wavelength range of about 300 to 330 nm which causes sunburn than the corresponding Comparative Example 1. Examples 2 and 3 correspond to the corresponding comparative examples 2 and 3.
Approximately 300-330nm wavelength that causes sunburn compared to
Range and wavelengths of about 330-36 that cause skin cancer
Example 4 has a high normalized absorbance in the range of 5 nm, and Example 4 has a wavelength of about 3
It is clear that it has a high normalized absorbance in the range of 30 to 365 nm.

When the foundations obtained in Examples 1 to 4 were used by a panel of 10 people under the hot summer sun, a superior sunburn preventing effect was obtained as compared with the corresponding foundations of Comparative Examples 1 to 4. Was.

As described above, the UV-absorbing pigments for cosmetics of Production Examples 1 to 4 exhibit an effect of having a low surface activity and excellent UV-absorbing performance because the organic compound is dispersed at the molecular level. ing. Furthermore, the cosmetics containing these UV absorbing pigments for cosmetics are more incomparable than the raw materials of the UV absorbing pigments for cosmetics, which are the raw materials of the pigments for cosmetics and the organic UV absorbing compounds. It has an extremely excellent ultraviolet absorbing performance and has an effect of obtaining an excellent sun protection effect.

[Brief description of the drawings]

FIG. 1 is a graph showing the ultraviolet absorbing performance of the ultraviolet absorbing pigment for cosmetics manufactured in Production Examples 1 to 4.

FIG. 2 is a graph showing the ultraviolet absorption performance of powder mixed as a foundation in Examples 1 to 4.

FIG. 3 is a graph showing the ultraviolet absorption performance of powders mixed as foundations in Comparative Examples 1 to 4.

Claims (4)

[Claims] 1. An ultraviolet-absorbing pigment for cosmetics, wherein the pigment powder for cosmetics is coated with an organic ultraviolet-absorbing compound by using an organic polymer compound as a medium. 2. The ultraviolet absorbing pigment for cosmetics according to claim 1, wherein the cosmetic pigment powder is a plate-like inorganic pigment powder. 3. The ultraviolet absorbing pigment for cosmetics according to claim 1, wherein the cosmetic pigment powder is a spherical pigment powder. 4. A cosmetic comprising the ultraviolet absorbent pigment for cosmetics according to claim 1.