JPH03294212A - Solid oily cosmetic - Google Patents

Abstract

PURPOSE:To obtain the subject cosmetic having excellent transparency and feeling and giving excellent make-up by using a liquid oil for cosmetic, an oil-gelatinizing agent for the solidification of the liquid oil and a specific fine pigment powder derived from a water-soluble dye and an insolubilizing agent for the dye, as active components. CONSTITUTION:The objective cosmetic contains, as active components, (A) a liquid oil for cosmetic, (B) an oil-gelatinizing agent capable of solidifying the component A and (C) a fine pigment powder having an average particle diameter of <=0.1mum and produced by reacting a water-soluble dye with an insolubilizing agent for the dye in a W/O emulsion. The component A is e.g. avocado oil, liquid paraffin, etc., or their mixture and its amount is 50-99wt.%, preferably 70-95wt.% based on the cosmetic. The component B is e.g. 12- hydroxystearic acid and its amount is preferably 0.1-30wt.%. The component C is e.g. a combination of an acid dye and a basic polyaluminum salt.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a solid oil-based cosmetic that has excellent transparency and a good feel and finish when applied.

[Problems to be solved by conventional techniques and inventions] Conventionally,
Solid oil-based cosmetics are generally prepared by heating and melting a wax such as carnauba wax or paraffin wax in a cosmetic oil and then cooling and molding the resulting product, but such cosmetics have been opaque. On the other hand, in recent years, there has been a demand for the development of oil-based cosmetics that are highly transparent in terms of appearance characteristics or clarity of appearance color and coating color.

Such transparent cosmetics include resin lipsticks containing polyamide resin as a highly transparent base (Japanese Patent Publication No. 45-4
1318 and Japanese Patent Publication No. 52-7807) and cosmetics containing the oil-soluble gelling agent dibenzylidene sorbitol (Japanese Patent Publication No. 58-25644).

However, these transparent cosmetics have drawbacks such as separation of oil components and volatilization of volatile components due to changes over time, etc., and a feeling of heavy spread when used.

On the other hand, cosmetics prepared by adding pigments to a base consisting of 12-hydroxystearic acid and esters (Japanese Unexamined Patent Publication No. 63-119
No. 412) is known, but in this cosmetic, although the base is transparent, the pigment added is coarse and amorphous, so it cannot be called a transparent and colored cosmetic. Also, as a transparent colored cosmetic, 12
- Cosmetics containing an oil-soluble dye added to a transparent base consisting of hydroxystearic acid and oil (JP-A-1-16311)
However, since oil-soluble dyes that can be used in cosmetics are extremely limited, it has been difficult to obtain the rich color tones required for cosmetics.

Therefore, it has been desired to develop solid oil-based cosmetics that are rich in color, have excellent transparency, and are also comfortable to use.

[Means for Solving the Problems] Under such circumstances, the present inventor has conducted intensive research and has found that a specific pigment that can be transparently dispersed in a transparent base consisting of a liquid oil for cosmetics and a gelling agent. By adding
The present invention was completed by discovering that it is possible to obtain a solid oil-based cosmetic that does not have the above-mentioned drawbacks and has excellent transparency.

That is, the present invention comprises the following components (A), (B) and (C)
(1) Liquid oil for cosmetics (B) An oil gelling agent capable of solidifying component (4) (obtained by reacting a water-soluble dye and an insolubilizing agent for the water-soluble dye in a W/O emulsion) Average particle size 0.1
The object of the present invention is to provide a solid oil-based cosmetic characterized by containing microparticle pigments having a particle size of less than .mu.m.

The cosmetic liquid oil used in the present invention as component (1) is not particularly limited as long as it is a liquid oil normally used in cosmetics, etc., such as avocado oil, camellia oil, macadamia nut oil, etc.
Vegetable oils such as olive oil and jojoba oil; Fatty acids such as oleic acid and instearic acid; Alcohols such as hexadecyl alcohol and oleyl alcohol; Cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, and 2-octyldodecyl myristate. , neopentyl glycol di-2-ethylhexanoate, glycerol tri-2-ethylhexanoate, 2-octyldodecyl oleate, isopropyl myristate, glycerol triisostearate, glycerol tri-2-ethylhexanoate, Olay "JR-" 2-octyldodecyl, inpropyl myristate, glycerol triisostearate, 2
- Esters such as ethylhexylhexanoic acid diglyceride, dibaramethoxycinnamic acid-mono-2-ethylhexanoic acid glyceryl; dimethylpolysiloxane, methylhydrodienepolysiloxane, methylphenylpolysiloxane,
Silicone oil such as octamethylcyclotetrasiloxane;
Examples include liquid hydrocarbon oils such as liquid paraffin, squalene, and squalane. These liquid oils can be used alone or in combination of two or more.

Such component C) is contained in the cosmetic composition of the present invention in an amount of 50 to 99% by weight (
(hereinafter simply expressed in %), particularly preferably from 70 to 95%.

As an oil gelling agent capable of solidifying component (A) of component (B) used in the present invention, when added to liquid oil in a relatively small amount (normal/0% or less), it forms a three-dimensional network structure, There are no particular limitations as long as the substance can solidify (gel) this, but examples include higher fatty acid esters such as 12-hydroxystearic acid; dibenzylidene sorbitol;
Rheopar); dialkyl phosphate polyvalent metal salts such as dicetyl aluminum phosphate (e.g., described in Japanese Patent Publication No. 1-41122) and dialkyl phosphate polyaluminum salts (e.g., described in Japanese Patent Application Laid-open No. 1-193278); lauroylglutamic acid dibutylamide (e.g., Ajinomoto Co., Ltd.); .

GP-1); Examples include metal soaps such as aluminum stearate. These may be used alone or in combination of two or more. These oil gelling agents generally have low crystallinity, and the oil gel formed by these oil gelling agents has extremely high transparency. On the other hand, so-called wax (solid fat) also solidifies oil, but requires a relatively large amount to solidify, forms a house of cards structure, and gives a solid substance with low transparency.

Component (B) may be blended in an amount sufficient to solidify component (A), and may vary depending on the type of component (A) used and the hardness of the intended gel. It is preferable to mix it in an amount of about .1 to 30%, preferably about 0.2 to 0.0%.

The pigment as component (C) used in the present invention is a fine particle pigment with an average particle size of 0.1μ or less obtained by reacting a water-soluble dye and an insolubilizing agent for the water-soluble dye in a W/O emulsion. Examples of combinations of water-soluble dyes and insolubilizers used as raw materials for producing this pigment include acid dyes and basic polyaluminum salts, acid dyes and calcium/barium salts,
Divalent metal salts such as zirconium, basic dyes and tannic acid, basic dyes and complex acids such as phosphomolybdic acid and phosphotungstic acid, etc. Among these, based on the physical properties of the pigments produced, acid dyes and basic Particularly preferred are the combinations of polyaluminum salts and the combinations of basic dyes and complex acids.

The water-soluble dye used here is not particularly limited, but for example, legal dyes among acid dyes include Red No. 2,
Red No. 3, Red/O2, Red/O4, Red/O5, Red/O6, Yellow No. 4, Yellow No. 5, Green No. 3, Blue No. 1, Blue No. 2, Red No. 227, Red 230 No., red 2
No. 31, red No. 232, orange No. 205, orange No. 207,
Yellow No. 202, Yellow No. 203, Green No. 201, Green 20
No. 4, Green No. 205, Blue No. 205, Brown No. 201, Red No. 401, Red No. 502, Red No. 503, Red No. 504
No. 506, Orange No. 402, Yellow No. 402, Yellow No. 403, Yellow No. 406, Yellow No. 407, Green No. 402, Purple No. 401, Black No. 401, etc. Among general acid dyes, CI Acid Yellow 7. CI Acid Yellow TO1CI Acid Orange LCI Acid
Orange 8, CI Acid Orange 45, CI Acid Blue 1, CI Acid Bluff, CI Acid Blue 15, CI Acid Blue 59, CI Acid Blue/O3, CI Acid Red 1, CI Acid Red 14, CI Acid Red 26, CI Acid Examples include Violet 15, CI Acid Violet 49, [:I Acid Green 9, CI Acid Green 41, CI Acid Black 24, etc., and these can be used alone or in combination of two or more types.

In addition, among basic dyes, legal dyes include Red No. 213,
Common basic dyes include CI Basic Yellow 2, C
I Hesic Orange 14, CI Basic Red 1, CI Basic Red 12, CI Basic Violet 1%CI Basic Violet 3, C
I Basic Violet 14, CI Basic
Blue 1, CI Basic Blue 5, CI Basic
Bruf, CI Basic Blue 9, CI Basic Blue 26, CI Basic Green 1, CI Basic Green 4, CI Basic Brown 1, etc., and these can be used alone or in combination of two or more types.

Among the compounds used as insolubilizers, basic polyaluminum salts include, for example, the following formula % formula %) (wherein, X is C1, Br, I or [') I, C0D-
and m1n and l are 3 (indicating a positive integer of n=n+1). Among them, ■ is 14 or less, especially 1 to /O, and X is C1 or +; ICH, CO
Compounds that are O- are preferred. For example, ^1 (leaf) sC
l.

Particularly preferred are ^1 m (OH) sCl and the like.

To prepare the pigment of component (C), a water-soluble dye and an insolubilizing agent for the dye are reacted in the aqueous phase of a W/O emulsion prepared using a nonionic surfactant. good.

More specifically, the pigment of the present invention is produced by preparing a W/O emulsion with an oil component and a nonionic surfactant for each of an aqueous solution of a water-soluble dye and an aqueous solution of an insolubilizing agent thereof, and then mixing these two emulsions and reacting them. Alternatively, prepare an emulsion in advance with an aqueous solution of either the water-soluble dye or the insolubilizing agent, an oil, and a nonionic surfactant, and add an aqueous solution of the other of the insolubilizing agent or the water-soluble dye to react. After that, water is removed by heating etc., preferably a volatile organic solvent is added, fine particles n#4 are separated by centrifugation etc., further washed with the solvent, and the solvent is removed by distillation etc. It is prepared by

Nonionic surfactants used for the production of W/O emulsion include sorbitan fatty acid ester type surfactants, glycerin fatty acid ester type surfactants, and polyoxyethylene alkyl ether type surfactants (the number of moles of ethylene oxide added). 5 mol or less) lanolin fatty acid ester type surfactants, cholesralol ester type surfactants, alkyl glyceryl ether type surfactants, etc.
From the viewpoint of properties, alkyl glyceryl ethers are preferred. Oils include hydrocarbons such as liquid paraffin, rosefish wax, ceresin, and squalane; wax nuts such as beeswax, spermaceti wax, and carnauba wax; natural animal and vegetable oils such as olive oil, camellia oil, jojoba oil, and lanolin; silicone oil;
Examples include fatty acids, higher alcohols, and ester oils obtained by reacting these, with nonpolar oils such as liquid paraffin being particularly preferred.

The concentration of the solution of water-soluble dye and insolubilizing agent in the above reaction can be freely selected within the range of 1 to 50%, but in the case of emulsion preparation, 1 to 10% is preferable. In addition, it is desirable that the concentration of the aqueous solution of water-soluble dye and insolubilizing agent added to the emulsion be close to a saturated aqueous solution, and although it depends on the type of water-soluble dye and insolubilizing agent used, it is usually 1-/O
% is preferred. The oil ratio when preparing the emulsion is 1
It can be freely selected within the range of ~99%, but from the viewpoint of reactivity, it is preferably about /O~40%. Further, the ratio of surfactant can be freely selected within the range of 0.5 to 99%, but is preferably 2 to 70% from the viewpoint of system stability and reactivity. The reaction temperature is usually about room temperature to 90°C, and the water removal temperature after the reaction is preferably 120 to 200°C.

The pigment thus obtained has a spherical shape, has no variation due to shape factors, and has a low bulk density. By controlling the size of water droplets in the emulsion using a colloid mill type homogenizer or the like, the particle size can be adjusted to a desired average size of 0.1 μm or less. The particle size can also be controlled by changing the composition of the emulsion used, and fine particles can also be obtained using a W/O microemulsion. Moreover, the surface of the pigment has been treated with the nonionic surfactant used in preparing the emulsion.

The pigment for (C)tL obtained in this way is blended in the solid oil-based cosmetic of the present invention in an amount of 0.1 to 25%, particularly 1 to 10%, to improve the color density at the time of application and the appearance color of the product. It is preferable for the sake of balance.

The solid oil-based cosmetic of the present invention may be composed only of the above-mentioned essential ingredients, but may also include ingredients commonly used in cosmetics, such as water, preservatives, antibacterial agents, pigments, fragrances,
One or more types of ultraviolet absorbers, moisturizing ingredients, sequestering agents, medicinal agents, etc. can be blended within a range that does not impair the effects of the present invention.

The solid oil-based cosmetic of the present invention is produced by blending the above-mentioned components according to a conventional method. For example, a base gel is prepared by mixing components (A) and (B) by heating and dissolving them as necessary. Then, the component (0) is added to the base gel, dispersed uniformly, and allowed to solidify by cooling.The cosmetic composition of the present invention obtained in this way is not particularly limited, but it can be used as an eyeshadow eyeliner by taking advantage of its properties. , gamma eyebrow, foundation, habo-ko, lipstick, etc.

〔Effect of the invention〕

The cosmetic obtained by the present invention has a transparent base,
In addition, the pigment added to this is spherical in shape and is a fine particle, and its surface is covered with a surfactant, so it has good dispersibility in oil and is easily dispersed down to primary particles, making it possible to color the pigment. It has the property of maintaining transparency even if it is added for a long time. Furthermore, the combination of base and pigment in the present invention is as follows:
It is possible to prepare solid products with vivid and diverse colors, and it can be used not only in cosmetics but also in medicines, stationery, etc.

〔Example〕

Next, the present invention will be explained with reference to Examples, but the present invention is not limited thereto. In addition, all parts and percentages in the examples are based on weight unless otherwise specified.

Production Example of Spherical Fine Particle Pigment Production Example 1 2.0g of monoisostearyl glyceryl ether was added to 20.0g of liquid paraffin and heated to 80°C. Here, basic polyaluminum salt [^1- (DH) sc
l) 0.7g was dissolved in 71.8g of water, heated to 80°C, and gradually added while stirring to prepare a W/O emulsion. The particle size of the emulsion was adjusted to about 0.6μ by changing the clearance of the emulsion through a colloid mill type homogenizer. Add 0.5 g of Yellow No. 4 to the resulting emulsion and 5.0 g of water. The solution dissolved in Og was added and stirred. After heating to 150° C. to remove moisture, the residue was washed with n-hexane and dried under reduced pressure, and the pigment, which had become a yellow No. 4 basic polyaluminum salt, was recorded. The average particle size was 0.07 μm, as determined from the particle image in a transmission electron micrograph, and the shape was spherical and the particle size was uniform.

Production Example 2 8.0 g of monoisostearyl glyceryl ether was added to 16 g of liquid paraffin and heated to 80°C. Here, basic polyaluminum salt [^1 Baro H) = C1] Q, 5
A mixture of 60 g of water and 60 g of water heated to 80° C. was gradually added to the mixture with stirring to prepare a W/O solution. A solution of 0.4 g of Red No. 2 dissolved in 15 g of water was added to the resulting emulsion and stirred. After heating to 150° C. to remove moisture, the residue was washed with n-hexane and dried under reduced pressure to obtain a pigment in the form of a red No. 2 basic polyaluminum salt. This pigment is spherical,
Its average particle size is 0. /Oμ.

Production example 3 15 g of sorbitan sesquiolate in 5 g of liquid halafine
was added and heated to 80°C. Here, basic polyaluminum salt [8l g(DH)s(jl O, 5g in water 60
A W/O emulsion was prepared by gradually adding the mixture dissolved in 100 g and heated to 80° C. with stirring. A solution of 0.8 g of Blue No. 1 dissolved in 15 g of water was added to the obtained emulsion and stirred. After heating to 150° C. to remove moisture, the residue was washed with n-hexane and dried under reduced pressure to obtain a pigment in the form of a blue No. 1 basic polyaluminum salt. This pigment is spherical and its average particle size is 0.0B
, u.

Example 1 After adding 5 parts of 12-hydroxystearic acid to 90 parts of isostearic acid triglyceride and dissolving it by heating to 80 to 90°C, 5 parts of the spherical fine particle pigment of Production Example 1 was added and dispersed with a homomixer. do. After degassing, it was poured into a mold, cooled and solidified to obtain a solid colored cosmetic.

Comparative Example 1 124) 5 parts of Roxystearic acid was added to Isostearic acid triglyceride 90B and dissolved by heating to 80 to 90°C, then 5 parts of commercially available yellow No. 4 aluminum lake pigment was added and dispersed with a homomixer. do. After degassing, it was poured into a mold, cooled and solidified to obtain a solid colored cosmetic.

Comparative Example 2 5 parts of polyethylene wax was added to 90 parts of isostearic acid triglyceride and dissolved by heating to about 120° C., and then 5 parts of the spherical fine particle pigment of Production Example 1 was added and dispersed using a homomixer. After degassing, it was poured into a mold, cooled and solidified to obtain a solid colored cosmetic.

Comparative Example 3 After adding 5 parts of polyethylene wax to 90 parts of triglyceride isostearate and dissolving the mixture by heating to about 120° C., 5 parts of commercially available yellow No. 4 aluminum lake pigment were added and dispersed using a homomixer. After degassing, it was poured into a mold, cooled and solidified to obtain a solid colored cosmetic.

Test Example 1 The transparency of Example 1 and Comparative Examples 1 to 3 was evaluated by observing the appearance and using the following evaluation criteria. The results are shown in Table 1.

Evaluation criteria ○: Good transparency △7 Slightly poor transparency X: Poor transparency Below margin table 1 Evaluation example 1 0 Comparative example 1 △ Comparative example 2 After adding 5 parts of acid ester to 92 parts of liquid paraffin and dissolving it by heating to about 70 to 80°C, 2 parts of Production Example 20 spherical particle pigment and 0.0 parts of camphor were added.
5 parts and 0.5 parts of menthol were added and dispersed using a homomixer. After degassing, the mixture was cooled and solidified to obtain a pale red transparent jelly-like cosmetic.

The obtained cosmetic had high transparency and an excellent feel and finish upon application.

Example 3 Colored transparent lipstick: 12-hydroxystearic acid/Suwara 240 in O part
parts, 20 parts of oleic acid triglyceride, 20 parts of castor oil
1 part and 4.8 parts of vaseline were added and heated to about 70 to 80°C to dissolve, and then Production Example 20 Spherical Spherical Particle Pigment 4B,
Production Example/0.8 part of spherical fine particle pigment, Production Example 30 0.2 part of spherical particle pigment, 0.1 part of fragrance, and 0.0 part of tocopherol acetate. Add IB and mix using a homo mixer. After degassing, it was poured into a mold, cooled and solidified to obtain a transparent solid lipstick.

The obtained cosmetic was a pale red, highly transparent lipstick with excellent feel and finish when applied.

that's all

Claims (1)

[Claims] 1. The following components (A), (B) and (C) (A) Liquid oil for cosmetics (B) An oil gelling agent capable of solidifying component (A) (C) Water-soluble dye and the insolubilizing agent for the water-soluble dye, W/
A solid oil-based cosmetic comprising a fine particle pigment with an average particle diameter of 0.1 μm or less obtained by reacting in an O emulsion.