JPS622562B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a press-finished cosmetic and a method for producing the same. More specifically, the present invention is characterized in that it contains as a colorant a polymerizable aluminum salt pigment obtained by reacting a water-soluble legally permitted pigment with a basic aluminum salt in the presence or absence of a fatty acid salt. This invention relates to pressed cosmetics. Press-finished cosmetics are cosmetics that are finished through a pressing process, such as cheek red, eye shadow, pressed powder, etc.; Dibrome Fluorescein (Red No. 201), Laked CBA (Red No. 204), Phthalocyanine Blue (Blue No. 404), Permanent Orange (Red No. 203), Permanent Red (Red No. 228),
Hansa Yellow (Yellow No. 401) etc. are widely used. Cosmetics colored with these colorants are generally used over long periods of time by being repeatedly applied to the skin on a daily basis, so the safety of these colorants must be carefully examined. In recent years, as the frequency of use of cosmetics has increased, several problems have been pointed out regarding the safety of ingredients, especially coloring agents. For example, the tar color mentioned above is a color that is prohibited for food use. and
There are concerns about risks such as mucosal damage and carcinogenicity. On the other hand, food coloring can be considered as a less toxic coloring agent, but since all of them are water-soluble, the coloring tends to transfer to areas other than the area where they are applied, making them unsuitable as coloring agents for press-finished cosmetics. Although these lake pigments are also known, they generally have the following drawbacks when used as colorants for finished cosmetics. (1) Although it is a lake, it remains slightly water-soluble, so the coloring of the finished cosmetic tends to transfer to areas other than the areas where it is applied. (2) The color is pale and the amount of finishing cosmetics (12~
30%), which impairs the feeling of use, and it is difficult to obtain various color tones by mixing colors, and it is hygroscopic and has a lot of residual moisture, so it cannot be uniformly dispersed in other powders. It is difficult to stabilize the color tone uniformly. Furthermore, when press-type cosmetics are produced, it is difficult to control the strength of the molded product and the brushability. That is, there remains a problem in moldability. (3) It has poor stability against light, and cosmetics are often used under direct sunlight during the day, leaving problems with fading and discoloration. Therefore, these lakes are also not used in finishing cosmetics. The present inventors focused on the above-mentioned problems and investigated a large number of organic and inorganic pigments in search of an ideal coloring agent for finishing cosmetics. Polymerizable aluminum salt pigments obtained by reacting water-soluble pigments with basic aluminum salts in the presence or absence of water not only solve the problems of toxicity, water solubility, and pale color, but also surprisingly can be used in lipsticks, etc. Unlike non-press finished cosmetics, this special rake has the non-hygroscopicity, low residual moisture, dispersibility, strength of molded products, and ease of brushing control required for press-finished cosmetics. It was found that the condition is satisfied by The basic aluminum salts used in the present invention are produced by a method such as Reference Example 1 or 2 described later. The basic aluminum salt obtained is Al _2+o
( _{OH ) 3o} It has a composition corresponding to the general formula (which changes depending on
=10, and the base with n=4 in Reference Example 2 is most preferred. The water-soluble legally permitted dyes used in the present invention are the first,
These are the dyes described in the 2nd and 3rd grooves. Examples include amaranth (red No. 2), phloxine B (red No. 104),
No.), Erythrosin (Red No. 3), Newcoccin (Red No. 102), Rose Bengal (Red No. 105), Acid Red (Red No. 106), Tartrazine (Yellow No. 4), Sunset Yellow FCF (Yellow No. 5), Fast Examples include Green FCF (Green No. 3), Brilliant Blue FCF (Blue No. 1), and Indigo Carmine (Blue No. 2). Among the legally permitted dyes,
Particularly suitable are the alkali salts of so-called edible acid dyes. One type of these dyes may be used alone, or two or more types may be used in combination. What should be noted is that when two or more legally permitted dyes are reacted simultaneously with basic aluminum salts, it is possible to diversify the colors of the colorants, and in that case, it is possible to mix two or more types of ordinary lakes. Since there is no reduction in brightness, separation of specific pigments, or sedimentation that occurs in finished cosmetics produced by the press method, it is possible to produce excellent press-type finished cosmetics with a homogeneous color tone, stable color, and high brightness. In order to further improve the dispersibility in the base material and improve production efficiency, an organic acid salt may be reacted with the polymerizable basic aluminum salt in an appropriate ratio at the same time as the colorant is produced. In this way, the moldability of the pressed finished cosmetic is further improved. The organic acid salt used here is preferably a fatty acid salt having 6 or more carbon atoms, and alkali salts such as stearic acid, palmitic acid, lauric acid, and lauryl sulfonic acid are particularly often used. The reaction is usually carried out at 0°C to 100°C, usually in an appropriate solvent (e.g. water), and for a relatively short period of time (usually 0.5°C).
It will be finished within about an hour. Specific production examples are described in Examples. The polymerizable aluminum salt dye thus produced is blended with a base by means known per se. As the base used for press-finished cosmetics, any conventionally used base can be conveniently employed. Specifically, as extender pigments such as talc, kaolin, and titanium dioxide, and as their binders.
Examples include polymers such as CMC soda and HPC, and/or oils and fats such as lanolin, isopropyl myristate, and glycerin monostearate. Although the blending ratio of the polymerizable aluminum salt dye and the base is not critical and cannot be generalized, it is usually about 0.2 to 1.5 parts by weight of the base to 1 part by weight of the polymerizable aluminum salt dye.
Parts by weight are used. In general, these components may be mixed together. The finished cosmetic of the present invention can be produced by pressing the thus obtained mixture according to a method known per se. The press-type finished cosmetics of the present invention can withstand long-term storage, have good color tone and color rendering, have a smooth feeling of use, do not transfer coloring to areas other than the areas where it is applied, and are less prone to fading or discoloration due to sunlight after application. The colorant is sufficiently dispersed and the molding does not collapse, making it ideal for use in press-finished cosmetics. Reference example 1 8.05g of aluminum chloride (AlCl ₃ 6H ₂ O)
Metallic aluminum 4.5 dissolved in 100ml water
Add g and heat to 100℃ for reaction. After the reaction becomes a homogeneous solution, the solution is heated at 100° C. for another 3 hours to fully polymerize the basic aluminum ions. Water is added to this to adjust the concentration to 1 to obtain a 0.1 mol/Al(OH) ₂ Cl (n=4) solution. Reference example 2 3.86g of aluminum chloride (AlCl ₃ 6H ₂ O) in 40
ml of water and add 2.2 g of metallic aluminum to it.
Add and heat to 100℃ for reaction. After the reaction becomes a homogeneous solution, the solution is heated at 100° C. for another 3 hours to fully polymerize the basic aluminum ions. Water is added to this to adjust the concentration to 1 to obtain a 0.1 mol/ _Al2 (OH) _5Cl (n=10) solution. Example 1 Apart from 400 ml of the solution of Reference Example 1, 8 g of Brilliant Blue FCF is dissolved in 400 ml of water. When a dye solution is added to a basic aluminum chloride solution with stirring and allowed to react at room temperature, uniform particles are precipitated. This precipitate was collected, washed with water, and dried to obtain 9.0 g of brilliant blue FCF aluminum lake, and this 8 g was thoroughly kneaded and dispersed with 15 g of talc. On the other hand, as a binder, 1.5 g of CMC soda, 7 g of sorbitol, 6 g of glycerin monostearate,
Melt and mix 17 g of lanolin, and knead this 12 g with a mixed dispersion of lake and talc. Furthermore, 13 g of talc, 55 g of titanium mica, and 0.1 g of fragrance were added to this mixture, thoroughly mixed, passed through a sieve, and press-molded into an aluminum container to obtain a blue eyelash dough. Example 2 200 ml of the solution of Reference Example 2 was heated to 70°C. Separately, 4g of newcoccin, 6g of sodium stearate
Dissolve g in 200ml of water and heat to 70℃. When a dye solution is added to a basic aluminum chloride solution while stirring and allowed to react, a precipitate of uniform viscosity is obtained.
This precipitate is collected, washed with water, and dried to obtain about 10 g of red Newkokushin aluminum lake. This 10
Thoroughly mix and disperse 4 g of isopropyl lanolate, 2 g of isopropyl myristate, and 10 g of titanium dioxide, and separately 3 g of kaolin, 5 g of calcium stearate, 3 g of corn starch, and 48 g of talc.
g, 0.1 g of fragrance are mixed in advance, and the above-mentioned colorant dispersion is thoroughly mixed with this, passed through a sieve, and then press-molded into an aluminum container to obtain a hot pink. Example 3 200 ml of the solution from Reference Example 2 was heated to about 70°C. Separately, 4 g of erythrosine, 6 g of tartrazine, 2 g of Sunset Yellow FCF, and Brilliant Blue.
Dissolve 0.2 g of FCF in 200 ml of water and heat to approximately 70°C. When a dye solution is added to a basic aluminum chloride solution while stirring and allowed to react, a precipitate of uniform viscosity is obtained. This precipitate is collected, washed with water, and dried to obtain about 7 g of a brown coloring agent, which is a mixture of the above-mentioned four types of pigments.
Thoroughly mix and disperse this 7g with 1g of lanolin, 1g of Span 80, 3g of Emalex 15, and 2g of titanium dioxide.Separately, 40g of talc, 8g of kaolin,
Mix 4g of zinc stearate and 0.1g of fragrance,
The above-mentioned colorant dispersion is thoroughly mixed with this, passed through a sieve, and then press-molded into an aluminum container to obtain a brown powder eye shadow. Comparison 1 The characteristics of the color tone, water solubility, dye concentration, and water content of the polymerizable aluminum salt dye used in the present invention are shown below.

【table】

[Table] Since the press-finished cosmetics of the present invention use water-insoluble polymerizable aluminum salt pigments, unlike cosmetics using the target products, the pigments will not be eluted by moisture such as sweat, and the pigments will not dissolve on the skin. There is no need to dye the fabric. In addition, the polymerizable aluminum salt pigment is a chemical combination of a water-soluble legally permitted pigment and a basic aluminum salt, and its color is several times stronger than that of the target product. Since aluminum salt is used, sufficient color can be obtained even with a small amount of coloring agent. In addition, as shown in the table above, the water content of polymerizable aluminum salt pigments is extremely low compared to the target lake, and furthermore, the concentration used as a finishing cosmetic is 0.5.
Since the amount is relatively small at ~20% by weight (usually 4-10% by weight), it is easy to disperse into the base material, and therefore the cosmetic composition of the present invention does not lose its shape and can be easily brushed. Comparison 2 In order to examine the stability of polymerizable aluminum salt dyes against light, several kinds of polymerizable aluminum salt dyes, their corresponding legally permitted dyes, and aluminum hydroxide lake were dispersed in an appropriate amount of oil and fat with titanium dioxide, and a paste was prepared. The table below shows changes in hue, brightness, and saturation when exposed to direct sunlight.

[Table] The polymerizable aluminum salt dye has better photostability than the target product. Generally, bases with n=10 are more stable than bases with n=4. It is durable enough to be used as a finishing cosmetic under direct sunlight. Therefore, the press-finished cosmetic composition of the present invention using a polymerizable aluminum salt pigment has better stability.

Claims (1)

[Claims] 1. A pressed cosmetic containing as a colorant a polymerizable aluminum salt pigment obtained by reacting a water-soluble legally permitted pigment with a basic aluminum salt in the presence or absence of a fatty acid salt.