JPH0481562B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a W/O type emulsion foundation composition that is used while being stored (filled) in a compact inner tray and retaining its shape.

In more detail, it spreads lightly when applied to the skin, has good adhesion (no wrinkling or movement), is non-sticky, gives a very moist feel, and is poured into the middle plate (gold plate or resin plate) of the compact. The present invention relates to a W/O type emulsion foundation composition that can be easily stored in a compact form. Traditionally, commercially available foundations include emulsion type (O/W type or W/O type).
There are three types of foundation: powder (cake) type foundation, and oil-based type foundation, each of which has its own characteristics (advantages and disadvantages).
For example, emulsion type (O/W type or W/O type)
In the case of foundation, it is very refreshing to the touch, gives a dewy finish, and has excellent cosmetic effects, but on the other hand, the container format is limited to tubes or bottles. It has the disadvantage of being inferior in functionality (ease of use).

In addition, powder (case) type foundations are stamped into a metal plate and stored in a compact, so while they are very easy to use and highly functional, they feel bulky to the touch. (powdery)
It has the following drawbacks. Oil-based foundations are excellent in convenience and functionality because they are poured into a metal plate and stored compactly, but on the other hand, they have the disadvantage of being greasy and sticky. There is. Therefore, the advantages of these types,
As is clear from the summary of the disadvantages, if it is possible to make the emulsified foundation compact (pour it into a medium plate such as a metal plate or resin blood), it will be highly functional,
An ideal cosmetic product is expected to provide a beautiful makeup effect that is extremely refreshing and dewy to the touch. However, usually O/W type or W/O type emulsified foundation is used in a medium plate (gold plate, resin plate, etc.).
When poured into water, water immediately evaporates in O/W type emulsion foundations and water evaporates over time in W/O type emulsion foundations, resulting in abnormal appearance. Specifically, oil leakage due to the collapse of the emulsion, peeling from the periphery of the metal plate due to shrinkage of the contents (foundation composition), depression of the surface, cracking, etc. are still unsatisfactory. Previously known documents (JP-A-53-86045, JP-A-53-86045)
127841, JP 56-12608, JP 56-53608, JP 57-27735, and JP 53-105906) disclose W/O type emulsions; All type emulsions have various problems when they are poured into a compact medium plate (metal plate or resin plate) to form a product. For example, JP-A-53-
In 86045, the surface morphology was unstable (the surface did not harden and easily flowed out at high temperatures), and appearance abnormalities such as oil stains were observed. When the W/O type emulsions of JP-A No. 53-127841 and JP-A No. 56-53608 are poured into a metal plate or the like to make a product, they are oily or oily because the pigment content is small relative to the total weight. Peeling from the periphery of the inner plate (gold plate) due to shrinkage of the foundation composition was also observed, and it was found that the foundation composition was insufficient for this purpose. Also, special public official Sho 56-12608,
In the case of the W/O type emulsion disclosed in Japanese Patent Publication No. 57-27735, the emulsion may be destroyed due to the low emulsifying power of the emulsifier used or the water content is too high, resulting in cracks, oil smearing, and W/O type emulsions. This causes shrinkage of the emulsified composition. In addition, when the W/O type emulsion of JP-A-58-105906 is poured into a medium plate and made into a product,
After about half a year, the water evaporates, causing the W/O emulsion to solidify and partially collapse, which is insufficient.

As a result of intensive research aimed at improving the drawbacks of the prior art, the present inventors found that a water-in-oil type (W/O type) foundation composition having the configuration described below provides a very refreshing feel. Not only does it give a beautiful cosmetic effect, but when it is poured (accommodated) into a compact inner plate (gold plate, resin plate, etc.) and made into a compact form, it may cause the above-mentioned appearance abnormalities, such as oil smearing and peeling from the edges. The present invention was completed based on the discovery that no caving or cracking occurs.

The object of the present invention is to have a compact form, excellent functionality, and when applied to the skin, it spreads lightly, has good adhesion (no twisting or movement), is non-sticky, and is extremely durable. It is an object of the present invention to provide a water-in-oil type (W/O type) emulsified foundation composition that can give a soft and pleasant feel.

That is, the present invention contains a nonpolar oily substance, sorbitan oleate, maltitol, water, and a pigment as essential components, and the pigment has a cation exchange capacity of 30 milligram equivalents. /100g or less of talc, kaolin, mica,
At least one of titanium mica is 5 to 25% by weight
and titanium dioxide, red iron oxide, yellow iron oxide, and black iron oxide, and the total content of the pigments is 30 to 60% by weight, and is housed in a compact medium plate. This is a water-in-oil emulsion foundation composition.

The pigments used in the present invention include titanium dioxide, red iron oxide, yellow iron oxide, and black iron oxide as essential components, and talc, kaolin, mica, and mica titanium with a cation exchange capacity of 30 milligram equivalents/100 g or less. At least one is blended in a range of 5 to 25% by weight. The total content of these pigments is 30 to 60% by weight, preferably 35 to 55% by weight, based on the weight of the composition. Generally, water-in-oil type (W/
There is no example of such a high concentration of pigment being blended into an emulsion (type O). If a cation exchange capacity greater than 30 milligram equivalents/100g is used, it may impair the stabilization of the emulsion and cause pigment aggregation.
Seepage of oil, acceleration of water evaporation when poured into a medium dish, shrinkage and peeling of the foundation composition,
Causing depression, cracks, etc.

The cation exchange capacity used here is the amount of negative charge of a pigment that performs cation exchange expressed in terms of the amount of exchangeable cations retained per unit weight.
The measurement of cation exchange capacity in the present invention is carried out as follows using a column permeation method.

That is, absorbent cotton was packed at the bottom of a column chromatography tube (diameter 1.0-1.2 cm, length 30 cm), and paper milk was poured onto it to create a 5 mm thick overlayer, and the sample pigment was
Fill with a mixture of 0.2-0.5 g and about 1 g of quartz sand.

This column chromatography tube is permeated with 100 ml of 1N ammonium acetate solution over a period of 4 to 20 hours. then 80
After washing with 50 ml of ethyl alcohol to remove excess ammonium acetate, 100 ml of 10% saline solution was added.
Wash and exchange the ammonium ions with leaching solution. Transfer the leachate obtained in the receiver to a 200 ml volumetric flask, add water to make exactly 200 ml, and measure the ammonium ion content of that aliquot. Transfer a certain amount to a 50 ml Nessler tube, add 2 ml of Lotusel salt and 1 ml of Nessler's reagent, and make up to 50 ml with water.
Compare and quantify with a fixed amount of ammonia standard solution.

The non-polar oily substance used in the present invention is an oily substance that does not have a polar group, and is preferably, for example, liquid hydrocarbon, vaseline, microcrystalline wax, paraffin wax, or ceresine wax. However, it is not limited to these. These non-polar oily substances may be used alone or in an appropriate combination of two or more, and the content thereof is 20 to 70% by weight, preferably 30 to 50% by weight based on the weight of the composition.
Weight%. If it is less than 20% by weight, a stable emulsified composition (W/O type) will not be obtained, and if it is more than 70% by weight, the refreshing effect will tend to decrease. still,
When polar oily substances such as ester oils, fats and oils such as triglycerides, and waxes are blended, the stability of the emulsion decreases significantly, causing the W/O type emulsion to peel off from the inner plate or partially. Causing cavities, cracks, oil leaks, etc.

Sorbitan oleate used in the present invention includes monooleate, dioleate, and sesquioleate of sorbitan, and monooleate (monoester) and sesquioleate (sesquiester) are particularly preferred. They are used alone or in combination and their content is from 0.1 to 10% by weight, preferably from 1 to 5% by weight, based on the weight of the composition. If it is less than 0.1% by weight, the emulsion stability will decrease, and if it is more than 10% by weight, it will become sticky and the crispy effect will tend to decrease. When mixing maltitol, it is preferable to use it as an aqueous solution. The content of maltitol is 2 to 25% by weight based on the weight of the composition,
Preferably it is 3 to 15% by weight. If it is less than 2% by weight, emulsion stability, water retention, adhesion and moisturizing feeling when applied to the skin will decrease, and if it is more than 25% by weight, the light touch will decrease and a sticky feeling will occur. .

Water is usually added as an aqueous solution of maltitol, and the amount used is 2 to 40% by weight, preferably 5 to 20% by weight, based on the weight of the makeup. If it is less than 2% by weight, the light touch, moisturizing feeling, and refreshing feeling will be reduced when applied to the skin, and when poured into a medium dish, the above-mentioned appearance abnormalities, especially significant shrinkage of W/O type emulsion, will occur. It is prone to peeling, surface depression, cracking, etc.

The water-in-oil type (W/O type) emulsified foundation composition of the present invention can be produced by various methods. This is carried out by adding and mixing an aqueous maltitol solution to the mixture of substances and pigments under stirring. In this case, a water-soluble effective agent (active ingredient) may be dissolved in an aqueous maltitol solution and mixed.

Although the liquid temperature during stirring and mixing is not particularly limited, it is preferably 60 to 90°C, most preferably 70 to 85°C.
It is ℃. If the temperature during mixing is too low, uniformly dispersed wax or the like may precipitate, coarse oil particles are likely to be partially liberated, and pigment dispersion will be poor.
Furthermore, if the content is too high, the components may easily decompose, volatilize, or change in quality.

After mixing and emulsifying and dispersing, use a suitable filling machine to fill the mixture into compact medium plates (gold plates, resin plates, etc.).
Pour into a bowl, level the surface, and cool to room temperature. The W/O type emulsified foundation composition of the present invention forms a water-in-oil type homogeneous and stable emulsion system, and is poured into the inner tray (metal tray, resin tray, etc.) of the compact. Even after setting, it shows very good emulsion stability retention, and does not cause any abnormality in appearance even in the process where water evaporates little by little over time. Moreover, when in use, it is possible to use a conventional tube type or bottle type O/W.
Compared to mold or W/O type emulsion compositions, it is more convenient to carry and can be applied (makeup) with a simple touch, and has excellent functionality.Also, compared to other oil-based foundation compositions, It exhibits excellent characteristics such as unprecedented light spreadability, non-stickiness, moisturizing properties, and good adhesion to the skin, and its commercial value is extremely high. The mechanism of action of a W/O type emulsion foundation composition having such useful and remarkable functions and properties is to create an extremely stable W/O type emulsion composition by blending pigments at a very high concentration. The pigments used are titanium dioxide, red iron,
Pigments (i.e. talc,
This is due to the fact that at least one of kaolin (mica, mica, titanium, etc.) is used, a non-polar oil is used as the oily substance, and the combination of emulsifier and emulsifier is sorbitan oleate and maltitol. .

Examples of the present invention will be shown below. The parts shown in the examples mean parts by weight.

Example 1 In a homomixer, 3.0 parts of ceresin, 4.0 parts of solid paraffin, and 2.0 parts of microcrystalline wax.
part, liquid paraffin 15.8 parts, sorbitan sesquioleate 2.0 parts, titanium dioxide 20 parts, red iron oxide 1.0 parts
part, yellow iron oxide 1.5 parts, black iron oxide 0.2 parts, kaolin
17.3 parts (cation exchange capacity 6.7 milligram equivalents/
(100g), heat to 80℃ and stir to dissolve. This pigment dispersion was stirred at 80℃ into an aqueous solution (80℃) consisting of 8.0 parts of maltitol and 25.2 parts of water.
were added and mixed to emulsify, and when the temperature was lowered to 70°C, an appropriate amount of fragrance was added to obtain a W/O type emulsified foundation composition of the present invention.

Next, this was poured into a compact medium tray using a filling machine (approximately 70°C), the surface was leveled, and the mixture was cooled to room temperature. This W/O type emulsion foundation composition formed a very uniform and stable emulsion system even within the compact, and no abnormality was observed in the appearance even after one year had passed. Also, when using
It spreads very lightly, is not sticky, and is moisturizing.
It had good adhesion to the skin, was convenient to carry, and could easily be used to apply makeup with one touch. On the other hand, for comparison, emulsification was carried out in the same manner except that kaolin with a cation exchange capacity of 169.4 milligram equivalents/100 g was used instead of kaolin with a cation exchange capacity of 6.7 milligram equivalents/100 g in the formulation. At that time, significant agglomeration and syneresis of the pigment occurred, and no W/O emulsion was produced.

Example 2 In a homomixer, 1.0 part of ceresin, 1.0 part of solid paraffin, 5 parts of vaseline, 1.0 part of microcrystalline wax, 35 parts of liquid paraffin, 5 parts of sorbitan monooleate, 25 parts of titanium dioxide, 2.0 parts of red iron oxide, and yellow iron oxide. 6.0 parts, black iron oxide 0.4 parts, talc (cation exchange capacity 4.6 mg equivalent/100
g) Add 16.6 parts, heat to 80℃ and stir to dissolve. This pigment dispersion was emulsified by adding and mixing an aqueous solution (80°C) consisting of 4.0 parts of maltitol and 8.0 parts of water while stirring at 80°C, and when the temperature was lowered to 70°C, an appropriate amount of perfume was added. The obtained foundation composition forms a W/O type emulsion system. Next, this was poured into a compact medium tray using a filling machine (approximately 70°C), the surface was leveled, and the mixture was cooled to room temperature.

On the other hand, for comparison, a comparative W/O emulsion composition was obtained in the same manner except that isopropyl palmitylate, a polar oily substance, was used instead of liquid paraffin in the formulation.

Here, in order to investigate the stability (moisture retention ability, change in appearance) of the emulsified composition of the present invention and a comparative emulsified composition, they were poured into the inner dish of a compact container, stored at room temperature, and their weight changed. (decrease %) was calculated. As a result, the weight change of the emulsified composition of the present invention was 0.5% after 1 month, 0.8% after 3 months, and 1.0% after 6 months.
%, which was 1.5% after 1 year, whereas the comparative emulsified composition had 1.5% after 1 month, 3.5% after 3 months, 4.5% after 6 months, and 6.0% after 1 year. In other words, in the case of a comparative emulsion composition using isopropyl palmitate, a polar oily substance, as an oily substance, the emulsion stability was poor in a compact, and over time the emulsion composition of the present invention suffered from more severe water scattering (weight loss). This caused significant abnormalities in appearance. Specifically, oil bleeds from the surface, peeling from the edge of the inner plate due to shrinkage of the contents, caving in and cracking of the surface, etc., resulting in a significant decrease in commercial value. In comparison, the W/O type emulsified foundation composition of the present invention shows no abnormality in appearance even after one year, and also has a feeling of use: it spreads lightly when applied to the skin, and has good adhesion. , (no wrinkling or crumbling), non-sticky, and gave a very moist feel.

Example 3 In a homomixer, 1 part of ceresin, 1 part of solid paraffin, 5 parts of microcrystalline wax, 29 parts of liquid paraffin, and 1 part of sorbitan sesquioleate were added.
20 parts of titanium dioxide, 2 parts of red iron oxide, 3 parts of yellow iron oxide, 0.4 parts of black iron oxide, and 24.6 parts of mica titanium (cation exchange capacity is 2.5 milligram equivalents/100g) and heated to 80℃. Stir to dissolve. This pigment dispersion was emulsified by adding and mixing an aqueous solution (80°C) consisting of 8.0 parts of maltitol and 5.0 parts of water while stirring at 80°C. The obtained W/O type emulsion foundation composition of the present invention forms a very uniform and stable emulsion system, and even after one year, there is no appearance abnormality in the compact. When used, it spread very lightly, had a refreshing feel, and had excellent adhesion to the skin. On the other hand, a W/O emulsion composition obtained in the same manner except that 1.0 part of glycerol monooleate was used instead of 1.0 part of sorbitan sesquioleate in the formulation had poor emulsion stability. After one month, significant appearance abnormalities such as pigment aggregation, syneresis, and oil bleeding occurred.

Example 4 In a homomixer, 0.5 parts of Candelilla wax, 2.0 parts of solid paraffin, 4.0 parts of petrolatum, 14.5 parts of liquid paraffin, 4.0 parts of sorbitan sesquioleate,
Titanium dioxide 15 parts, red iron oxide 1.0 parts, yellow iron oxide 1.5 parts
1 part, 0.2 parts of black iron oxide, and 12.3 parts of mica (cation exchange capacity: 15.2 milligram equivalents/100 g) were heated to 80°C and dissolved with stirring. After adding and mixing this pigment dispersion with stirring at 80°C an aqueous solution (80°C) consisting of 20 parts of maltitol and 25 parts of water, the same procedure as in the present invention (Example 1) was carried out. A W/O emulsion foundation composition of the present invention was obtained. This W/O type emulsion foundation composition forms a very uniform and stable emulsion system, and
No abnormalities were observed in the appearance of the compact after many years. When in use, it spreads very lightly, is non-sticky, moisturizing, has good adhesion to the skin, is convenient to carry, and can be easily applied with one touch. On the other hand, a comparative W/O emulsion composition obtained by using maltose instead of maltitol in the formulation had poor emulsion stability, and after one month, the surface showed bumps and whitening (white fine particles). This caused a noticeable abnormality in appearance due to the powdery appearance and oil stains.

Comparative Example 1 In Example 1, kaolin (with a cation exchange capacity of 6.7 milligram equivalents/100 g) was used in the formulation.
A W/O emulsion composition was obtained in the same manner as in Example 1, except that 30.0 parts and 12.5 parts of water were used. However, this emulsified composition caused significant water dispersion over time, and the shrinkage of the emulsified composition caused external defects such as peeling from the edge of the inner dish, depression of the surface, and cracks, and it had no commercial value. .

Comparative Example 2 In Example 1, kaolin (with a cation exchange capacity of 6.7 milligram equivalents/100 g) was used in the formulation.
A W/O emulsion composition was obtained in the same manner as in Example 1, except that 3.0 parts of titanium dioxide and 34.3 parts of titanium dioxide were used. However, this emulsified composition contains a large amount of titanium dioxide, red iron oxide, yellow iron oxide, and black iron oxide, so when applied to the skin, it does not spread lightly, has little gloss, and does not have a moist feel. Therefore, its commercial value was extremely low.

Comparative Example 3 The same procedure as in Example 1 was carried out, except that the pigment composition in the formulation was maintained at the same ratio, the total pigment content was 63 parts based on the weight of the composition, and 2.2 parts of water was used. A W/O type emulsion composition was obtained. However, this emulsified composition had poor fluidity when poured into the inner tray of the compact (at about 70°C), and furthermore, the surface could not be leveled uniformly. In addition, the emulsion stability is poor, and the emulsion composition shrinks and solidifies after one month.
Its commercial value was extremely low.

Comparative Example 4 In Example 1, the pigment composition was maintained at the same ratio in the formulation, and the total pigment content was
A W/O emulsion composition was obtained in the same manner as in Example 1, except that 26 parts and 39.2 parts of water were used. However, this emulsified composition is poured into the inner tray of the compact, the surface is leveled, and the product is made into a product.The compact (inner tray) is then tilted (approximately 60 degrees from the horizontal) and left in a relatively high temperature place (45 ℃ for 6 hours), the surface became sagging. Further, as a result of a sensory test, the adhesiveness to the skin was poor, the product wrinkled, and its commercial value was extremely low.

Claims (1)

[Claims] 1 Contains a non-polar oily substance, sorbitan oleate, maltitol, water, and a pigment as essential components, and the pigment is:
5 to 25% by weight of at least one of talc, kaolin, mica, titanium mica with a cation exchange capacity of 30 milligram equivalents/100g or less (weight% is based on the weight of the composition, the same applies hereinafter), titanium dioxide, red iron oxide, yellow A water-in-oil type emulsion foundation composition housed in a compact inner tray, which is composed of iron oxide and black iron oxide, and the total content of the pigment is 30 to 60% by weight. thing. 2 The non-polar oily substance is 20 to 20% by weight of the composition.
The composition according to claim 1, containing 70% by weight. 3. The composition according to claim 1, wherein the non-polar oily substance is a liquid hydrocarbon, petrolatum, microcrystalline wax, paraffin, ceresin wax, or a combination thereof. 4. The composition according to claim 1, wherein the sorbitan oleate ester is contained in an amount of 0.1 to 10% by weight based on the weight of the composition. 5. The composition according to claim 1, wherein the sorbitan oleate is sorbitan monooleate, sorbitan sesquioleate, or a combination thereof. 6 Maltitol is 2 to 2% by weight of the composition
The composition according to claim 1, containing 25% by weight. 7. The composition according to claim 1, wherein water is contained in an amount of 2 to 40% by weight based on the weight of the composition.