JPH11349430A - Oily solid cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an oily solid cosmetic having excellent makeup persistence and excellent touch and giving natural uniform finishes without unnaturally whitening skins when coated on the skins, by compounding a specific modified organopolysiloxane and a composite powder comprising an inorganic white pigment and a highly oil-absorbing powder. SOLUTION: This cosmetic contains (A) 0.1-50 wt.% of a composite powder comprising an inorganic white pigment and a highly oil-absorbing powder and (B) 0.1-50 wt.% of one or more kinds of compounds selected from modified organopolysiloxanes of formula I R<1> -R<12> are each a 1-40C alkyl, a group of formula II or a group of formula III [R<13> is H or a 1-32C alkyl; R<14> and R<15> are each H or a 1-32C hydrocarbon; (w) and (z) are each 1-18]; (l), (m), (n), (x) and (y) are each such a number that the content of the group of formula II or III is 1-50 wt.% on the average). The oil-absorbing amount of the component A is preferably 30-300 ml/100 g. Preferably, the refractive index nD<25> of the highly oil-absorbing powder in the component A is 1.4-2.0.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a natural and uniform finish without unnatural whitening when applied to the skin, and has excellent cosmetic durability and feeling of use. It relates to an oily solid cosmetic.

[0002]

BACKGROUND OF THE INVENTION Make-up cosmetics such as lipsticks, foundations and nail enamels usually include titanium oxide, for the purpose of improving the appearance of the product and the brightness of the applied finish.
An inorganic white pigment such as zinc oxide is blended. However, these inorganic white pigments are liable to agglomerate during production, tend to cause uneven coating when applied to the skin, are difficult to apply uniformly, or are unnaturally white in application color with respect to appearance color. There is a point.

[0003] Further, makeup cosmetics are required to have a long lasting cosmetic effect, and in particular, those which do not discolor due to sweat, sebum, meals and the like. As a method for preventing discoloration, a method of combining a volatile oil and a resin (Japanese Patent Application Laid-Open No. 62-298511, Japanese Patent Application Laid-Open No. 8-225
432), a method of blending a modified siloxane (JP-A-5-178722, JP-A-6-305933, JP-A-7-25728, JP-A-9-871).
No. 57), but none of them can suppress the aggregation of the pigment remaining on the skin, causing dullness over time,
There was a drawback that the coating color did not last.

Further, as means for improving the surface condition and dispersibility of inorganic white pigments in oily solid cosmetics, metal soaps, higher fatty acids, silica, alumina, siloxane,
Although surface treatment of pigments with a fluorine-based polymer, an amino acid derivative or the like is known, there was no effect of improving dispersibility to suppress unnatural whiteness of the coating color. For example, by using a pigment in which the surface of titanium oxide is coated with a silica layer,
Method for controlling whiteness during coating (Japanese Patent Laid-Open No. 63-44510)
Japanese Patent Application Laid-Open No. H11-157, 1991, did not show any improvement in the dispersibility of the inorganic white pigment at the time of production, and it was necessary to use it together with a dispersant and a pigment surface treatment.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a natural and uniform finish without unnatural whitening of the appearance color when applied to the skin, and to have a long lasting makeup. And to provide an oily solid cosmetic having excellent feeling upon use.

[0006]

Means for Solving the Problems The present inventor has developed a method for producing a primary inorganic white pigment by using a composite powder comprising an inorganic white pigment and a highly oil-absorbing powder in combination with a modified organopolysiloxane having a specific structure. The dispersibility in oil-based solid cosmetics can be increased without causing aggregation of particles, so that there is no adverse effect such as whitening of pigments on rough skin areas or wrinkles and unevenness, and matching of application color and appearance Becomes possible,
Furthermore, they have found that an oily solid cosmetic having excellent cosmetic durability and feeling of use can be obtained.

That is, the present invention provides a composite powder comprising the following components (A) and (B): (A) an inorganic white pigment and a highly oil-absorbing powder.
0.1 to 50% by weight, (B) the following general formula (1)

[0008]

Embedded image

Wherein R ^{1 to} R ¹² are the same or different,
A linear, branched or cyclic alkyl group, alkenyl group or fluoroalkyl group having 1 to 40 carbon atoms, or the following general formula (2) or (3)

[0010]

Embedded image-(CH ₂ ) _w O (C ₂ H ₄ O) _x (C ₃ H ₆ O) _y R ¹³ (2)-(CH ₂ ) _z OCH ₂ CH (OR ¹⁴ ) CH ₂ (OR ¹⁵ ) (3)

Wherein R ¹³ is a hydrogen atom, having 1 to 32 carbon atoms.
And R ¹⁴ and R ¹⁵ are the same or different and represent a hydrogen atom or a linear or branched hydrocarbon group having 1 to 32 carbon atoms, w and z represent a number of 1 to 18 Represents a group represented by However, R ^{1 to} R ¹²
At least one of which represents a group (2) or (3);
l, m, n, x, and y represent numbers at which the content of the group (2) or (3) in the molecule is 1 to 50% by weight on average. Here, the l, m and n siloxane units may be bonded in a block shape or in a random shape. One or more selected from the modified organopolysiloxanes represented by formula (1): 0.1 to 50% by weight.

[0012]

DETAILED DESCRIPTION OF THE INVENTION The component (A) used in the present invention is a composite powder comprising an inorganic white pigment and a highly oil-absorbing powder.
The form of the composite is not particularly limited, but it is preferable that the highly oil-absorbing powder contains an inorganic white pigment. Also,
The shape of the composite powder of the component (A) is preferably spherical from the viewpoint of feeling of use of the oily solid cosmetic.

Such a composite powder exhibits good dispersibility in an oily solid cosmetic and exhibits an appropriate oil absorption so as not to deteriorate the feel due to a decrease in the amount of oil in the oily solid cosmetic. desirable. That is, it is preferably 30 to 300 ml / 100 g, more preferably 50 to 200 ml / 100 g, and still more preferably 80 to 200 ml / 100 g according to the measurement method according to JIS K5101.

The highly oil-absorbing powder is not particularly limited as long as it has a certain amount of oil absorption when a complex is formed with the inorganic white powder, and examples thereof include microbead silica gel (manufactured by Fuji Devison) and Suns Silica such as Fair (produced by Asahi Glass Co., Ltd.) and Toksil (produced by Tokuyama Soda Co.), cross-linkable silicone such as trefill (produced by Toray), SP-500
Nylon such as (manufactured by Toray Industries, Inc.), PMMA such as Techpolymer MBT (manufactured by Sekisui Chemical Co., Ltd.), and Microsphere (manufactured by Matsumoto Yushi Co., Ltd.) can be used. The shape of the highly oil-absorbing powder is not particularly limited, but may be spherical, particularly having a particle size of 0.5 to 0.5.
It is preferably a spherical shape of 50 μm.

The refractive index nD ²⁵ of the highly oil-absorbing powder is 1.4 to
2.0 is preferred, and 1.4 to 1.8 is particularly preferred.
When the ratio is 1.4 or less, the refractive index difference at the interface between the oil agent and the highly oil-absorbing powder is large, and the interface of the highly oil-absorbing powder in the oil agent becomes opaque. is there. Even at 2.0 or more, the refractive index difference at the interface between the oil agent and the highly oil-absorbing powder becomes large, and the composite powder interface becomes opaque in the oil agent, and the difference in the refractive index between the highly oil-absorbing powder portion and the white pigment interface. , The highly oil-absorbing powder itself becomes white in the oil agent, and the effect of improving the dispersibility of the white pigment cannot be sufficiently obtained. As a method for evaluating the refractive index of the highly oil-absorbing powder portion of the composite powder, various composites having a known refractive index are impregnated with the composite powder, and the interface between the composite powder and the oil is determined under an optical microscope. When it becomes unclear, the refractive index of the oil agent can be the refractive index of the highly oil-absorbing powder portion.

On the other hand, the inorganic white pigment constituting the component (A) is not particularly limited as long as it is generally used in cosmetics, and titanium oxide, zinc oxide, aluminum oxide,
Barium sulfate, zirconium oxide, or the like can be used. Although the particle size of the inorganic white pigment is not particularly limited, the primary particle size of the component (A) in the composite powder is 0.03 from the viewpoint of uniform dispersibility in the composite powder and function as a white pigment. ~
It is preferably 0.5 μm.

The component (A) is a composite powder comprising an inorganic white pigment and a highly oil-absorbing powder, but the method for preparing such a powder is not particularly limited. For example, a method of immersing a highly oil-absorbing powder in a dispersion containing an inorganic white pigment or a solution that is a raw material of the inorganic white pigment, followed by drying, and applying the dispersion or solution to the surface of a highly oil-absorbing powder such as silica. And a method of dispersing an inorganic white pigment having an appropriate particle size in the raw material at the stage of producing a highly oil-absorbing powder (US Pat. No. 4,132,5).
60). As the titanium oxide-containing silica prepared by such a method, for example, Sunsphere ST3
(Manufactured by Asahi Glass Co., Ltd.) and S-IT (manufactured by Toray Industries, Inc.) are commercially available.
00IT (manufactured by Toray Industries, Inc.). The obtained powder may be used as it is, or may be used after performing washing, treatment with an acidic / basic substance, oxidation / reduction treatment, calcination, etc., if necessary.

Further, the composite powder of the component (A) may be subjected to a conventional surface treatment such as metal soap, higher fatty acid, surfactant, silica, alumina, titanium oxide, zirconia,
Surface treatment with silicon nitride, siloxane, polysiloxane and derivatives thereof, fluorine-based polymers, amino acid derivatives, proteins such as fibroin, resins, acrylic polymers, clay minerals and the like can also be performed.

The inorganic white pigment constituting the component (A) is preferably in a weight ratio of 1/20 to 1/1 with respect to the highly oil-absorbing powder.
2, more preferably 3/20 to 9/20. 1/2
If it is 0 or less, the brightness required as a white pigment is not sufficient, and 1
If the ratio is more than / 2, when applied to the skin, the applied color tends to become unnaturally white with respect to uneven coating and appearance color.

The compounding amount of the composite powder of the component (A) is 0.1 to 50% by weight, preferably 1 to 30% by weight in the whole composition. If the content is less than 0.1% by weight, a sufficient effect cannot be obtained.
If the content exceeds% by weight, the feeling of use is reduced.

Component (B) Modified Organopolysiloxane
Is a polyether modified represented by the general formula (1) or
Glyceryl ether-modified organopolysiloxane
You. R ¹~ R¹²In the definition, a straight-chain having 1 to 40 carbon atoms, branched
Chain or cyclic alkyl, alkenyl or fluoro
As the alkyl group, an alkyl group having 1 to 24 carbon atoms is preferable.
And a methyl group is particularly preferred.

In the general formula (2), R ¹³ is preferably a hydrogen atom or an alkyl group having 1 to 24 carbon atoms, particularly preferably a hydrogen atom.

In the general formulas (2) and (3), R ¹⁴ and R ¹⁵
Examples of the linear or branched hydrocarbon group having 1 to 32 carbon atoms include methyl, ethyl, propyl, butyl, pentyl, hexyl, octyl, decyl, dodecyl, tetradecyl, hexadecyl, octadecyl, eicosyl, doeicosyl, tetra Linear alkyl groups such as eicosyl, hexaeicosyl, octaeicosyl, and triacontyl;
Examples thereof include branched alkyl groups such as isopropyl, sec-butyl, tert-butyl, neopentyl, 1-ethylpropyl, and 1-heptyldecyl. R ¹⁴ and R ¹⁵ are preferably a hydrogen atom or a hydrocarbon group having 1 to 5 carbon atoms, particularly preferably a hydrogen atom.

Further, l, m, n, x and y represent numbers at which the content of the polyoxyalkylene group (2) or the alkyl glyceryl ether group (3) in the molecule is 1 to 50% by weight on average. However, l, m and n are preferably in the range of 0 to 2000 in view of the availability of the raw material organopolysiloxane, operability at the time of production, and the like, and x and y are preferably 0 to 50. Preferably, it is particularly preferably 0 to 20.

The modified organopolysiloxane of the component (B) in the present invention must have a polyoxyalkylene group (2) or alkyl glyceryl ether group (3) content of 1 to 50% by weight in the molecule. If the content is outside this range, it will not be possible to obtain long-lasting makeup and good feeling of use.

Preferred examples of the modified organopolysiloxane of the component (B) include KF945 (manufactured by Shin-Etsu Silicone), SH3775E (manufactured by Dow Silicone Toray),
L-7500 (manufactured by Nippon Unicar), TSF4446
(Manufactured by Toshiba Silicone Co., Ltd.) and JP-A-6-30593
No. 3, the alkyl glyceryl ether-modified organopolysiloxane described in JP-A-8-27274, the polyoxyalkylene / alkyl glyceryl ether-modified organopolysiloxane described in JP-A-8-27274, and the perfluoroalkyl / alkyl glyceryl ether described in JP-A-9-249518 Modified organopolysiloxane and the like can be mentioned.

The weight average molecular weight of the modified organopolysiloxane of the component (B) is preferably from 300 to 20,000,
Particularly, 500 to 10,000 is preferable.

Such a modified organopolysiloxane of the component (B) is disclosed in JP-A-6-305933 and JP-A-8-305933.
It can be produced according to the method described in JP-A-27274 and JP-A-9-249518.

One or more modified organopolysiloxanes of the component (B) in the present invention can be used alone or in combination in an amount of 0.1 to 50% by weight, especially 1 to 20% by weight in the total composition. It is preferred to be in the range of weight%. If the amount is less than 0.1% by weight, the color holding effect is not sufficient, and
If it exceeds 0% by weight, the feeling of application is deteriorated.

The oily solid cosmetic of the present invention contains, in addition to the above essential components, components to be blended with ordinary cosmetics, such as surfactants, oils, silicone oils, perfluoropolyethers, humectants, and film-forming agents. , Oil gelling agent, UV absorber,
Inorganic metal salts, organic metal salts, alcohols, chelating agents, pH adjusters, preservatives, antioxidants, thickeners, medicinal ingredients, other pigments, water, fragrances, etc., within a range that does not impair the effects of the present invention. Can be appropriately blended.

The oily solid cosmetic of the present invention can be used as a foundation, lipstick, lip balm, eyeshadow, eyeliner and the like.

[0032]

The oil-based solid cosmetic of the present invention has a bright appearance color, does not become unnaturally white when applied to the skin, has a natural and uniform finish, It does not cause dullness, and is excellent in persistence of makeup and feeling of use.

[0033]

EXAMPLES Next, the present invention will be further described with reference to examples, but the present invention is not limited to these examples.

Examples 1 to 6, Comparative Examples 1 to 4 Lipsticks having the compositions shown in Tables 1 to 3 were produced by a conventional method, and their appearance color, coating color, feeling of use, and durability of makeup were evaluated.

(Evaluation Method) (1) Appearance Color The brightness of the appearance color of each lipstick was evaluated by visual evaluation of 10 professional panels according to the following criteria. ◎: Sufficiently bright and high saturation ○: Sufficiently bright but low saturation △: Insufficient brightness but high saturation ×: Insufficient both brightness and vividness

(2) Good balance between appearance color and application color The good balance between appearance color and application color of each lipstick was evaluated by the following criteria based on an evaluation of actual use by 10 professional panels. ：: When the same brightness and vividness as the appearance color are applied. ○: When the same brightness as the appearance color is applied, but lacks vividness. Δ: Both the appearance color and the application color are dark. ×: Compared with the appearance color. Coating color is bright and lacks vividness

(3) Feeling of Use Ten expert panelists sensory-evaluated “naturalness”, “unevenness”, “dullness” and “feel” when each lipstick was actually used. Was evaluated according to the following criteria. ◎: 9 or more out of 10 evaluated as good ：: 7 to 8 evaluated as good Δ: 4 to 6 evaluated as good ×: 3 or less evaluated as good

(4) Sustainability of Makeup Ten expert panelists sensory-evaluate “makeup lasting” and “dullness” when each lipstick is actually used.
Evaluation was made according to the following criteria. ◎: 9 or more out of 10 evaluated as good ：: 7 to 8 evaluated as good Δ: 4 to 6 evaluated as good ×: 3 or less evaluated as good

[0039]

[Table 1]

[0040]

[Table 2]

[0041]

[Table 3]

* 1: Polywax 500, manufactured by PETROLITE (mp: 88 ° C.) * 2: Polywax 850, manufactured by PETROLITE (mp: 107)
* 3: CP-7, manufactured by PETROLITE (mp: 96 ° C) * 4: In the general formula (1), l + n = 50 to 100, m = 1
5, R ^{1 to} R ⁵ , R ^{7 to} R ¹² = CH ₃ , and R ⁶ shown in the formula (2) are w = 3, x = 7 to 15, y = 0, R ¹³ = H, weight average molecular weight 8000 * 5: In the general formula (1), l = 60, m = 1 to 3, n = 2
6, R ^{1 to} R ⁵ , R ⁷ , R ^{9 to} R ¹² = CH ₃ , and R ⁶ represents w = 3, x = 7 to 15, y = 1 to 3, R ¹³ shown in the formula (2).
= CH ₃ and R ⁸ are represented by the following formula (3): z = 3, R ¹⁴ , R ¹⁵ =
H, weight average molecular weight 6700 * 6: In the general formula (1), l + m = 60, n = 2 to 6, R ¹
To R ⁷ , R ^{9 to} R ¹² = CH ₃ , and R ⁸ is z = 1
1, R ¹⁴ , R ¹⁵ = H, weight average molecular weight 5800 * 7: Ab11 WAX 9801, manufactured by TH.GOLDSCHMIDT * 8: KF995, manufactured by Shin-Etsu Silicone * 9: KF7312J, manufactured by Shin-Etsu Silicone * 10: AEROSIL 200, * 11: ST-3, manufactured by Asahi Glass Co., Ltd. (particle size 3μm, oil absorption 150ml / 10
0g, refractive index nD ²⁵ of the highly oil-absorbing powder part: 1.48 (as interface refractive index)) * 12: SP-500IT, manufactured by Toray Industries (particle size 5μm, oil absorption 55ml / 1)
00g, refractive index nD ²⁵ of highly oil-absorbing powder part: 1.48 (as interface refractive index)) * 13: Porous silica (Sunsphere H-31, manufactured by Asahi Glass Co., Ltd.)
(Refractive index nD ²⁵ : 1.48) is impregnated with a 10% aqueous solution of zirconium nitrate, dried at 100 ° C., and further calcined in an air stream at 550 ° C. for 6 hours (particle size: 3 μm, oil absorption: 120).
* 14: An aqueous dispersion containing 20% of zinc oxide and 2% of a nonionic dispersant is treated with a sand mill for 6 hours, and the resulting slurry is made of Matsumoto Yushi Microsphere-M (refractive index nD ^25). ： 1.4
8) impregnated and dried at 80 ° C (particle size 5μm, oil absorption 80ml / 100g) * 15: CR-50, manufactured by Ishihara Sangyo (particle size 0.25μm, oil absorption 18m)
l / 100g) * 16: MT-600B, manufactured by Teikoku Kakosha Co., Ltd. (particle size 0.06μm, oil absorption 2)
0ml / 100g)

Claims (5)

[Claims] 1. A composite powder comprising the following components (A) and (B): (A) an inorganic white pigment and a highly oil-absorbing powder.
0.1 to 50% by weight, (B) the following general formula (1) Wherein R ^{1 to} R ¹² are the same or different and have 1 to 4 carbon atoms.
0 linear, branched or cyclic alkyl, alkenyl or fluoroalkyl group or the following general formula (2)
Or (3) embedded image-(CH ₂ ) _w O (C ₂ H ₄ O) _x (C ₃ H ₆ O) _y R ¹³ (2)-(CH ₂ ) _z OCH ₂ CH (OR ¹⁴ ) CH ₂ (OR ¹⁵ ) (3) (wherein, R ¹³ represents a hydrogen atom, an alkyl group having 1 to 32 carbon atoms or a phenyl group, and R ¹⁴ and R ¹⁵ are the same or different and each represent a hydrogen atom or 1 to 32 carbon atoms. And w and z each represent a number of 1 to 18). However, at least one of R ^{1 to} R ¹² represents a group (2) or (3), and l, m, n,
x and y each represent a number at which the content of the group (2) or (3) in the molecule is 1 to 50% by weight on average. Here, the l, m and n siloxane units may be bonded in a block shape or in a random shape. ]
An oily solid cosmetic comprising 0.1 to 50% by weight of one or more selected from the modified organopolysiloxanes represented by the formula: 2. The composite powder of component (A) has an oil absorption of 30 to 30.
2. The oily solid cosmetic according to claim 1, wherein the amount is 300 ml / 100 g. 3. The oil-based solid cosmetic according to claim 1, wherein the high oil-absorbing powder constituting the component (A) has a refractive index nD ²⁵ of 1.4 to 2.0. 4. The method according to claim 1, wherein the inorganic white pigment constituting the component (A) is at least one selected from titanium oxide, zinc oxide, zirconium oxide, aluminum oxide, barium sulfate and boron nitride. An oil-based solid cosmetic according to any one of the preceding claims. 5. The oiliness according to claim 1, wherein the weight ratio of the inorganic white pigment constituting the component (A) to the highly oil-absorbing powder is 1/20 to 1/2. Solid cosmetics.