JPS5973510A - Cosmetic - Google Patents

Abstract

PURPOSE:To provide a cosmetic having freely adjustable feeling to the skin, giving gradually changing feeling to the skin, and applicable uniformly, by compounding spherical soft resin capsules collapsible by compression and containing a component selected from skin emollient component, perfumery and drug component. CONSTITUTION:The objective cosmetic contains spherical soft resin capsules collapsible by compression and containing a component selected from a skin emollient (e.g. higher fatty acid, higher alcohol, wax, etc.), perfumery, and a drug component (e.g. vitamin). The capsule is made of a homopolymer or copolymer of (meth)acrylic acid (ester), vinyl acetate, vinyl chloride, ethylene, etc., and has a particle diameter of 1-100mum and a compressive (breakage) strength of 5- 50kg/cm<2>. It can be collapsed easily by the pressure with fingers, and turns from the dry feeling to the moistened feeling when the capsule contains a skin emollient. The cosmetic is especially suitable for make-up.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improved cosmetics, which include expanding the range of usability of makeup cosmetics, imparting continuous and different qualitative changes, and improving the uniformity of the paste. The purpose is to provide a new cosmetic that improves adhesion and prevents caking in powder products.

Conventionally, when considering makeup cosmetics, in order to produce cosmetics that are oriented to all nine senses in terms of ease of use and feel of makeup finish, it is inevitably necessary to increase the amount of oil. but,
If the amount of oil increases, powder products will feel wet and heavy, and if used in a puff,
Because the influence of the compression force when the powder is taken up with a puff, the powder's own weight, and the adhesion force of the oil agent increases,
Not only does it cause caking, making it difficult to use, but it also becomes difficult to stick to the puff. Furthermore, the oil coating the surface of the powder impairs the lubricity of the powder itself, causing uneven coating on the skin, making wrinkles and unevenness noticeable, and significantly impairing the makeup effect.

On the other hand, if the amount of oil added is reduced in order to compensate for the above-mentioned drawbacks, the surface characteristics of the powder will cause degreasing and dehydration reactions, which will cause discomfort such as dryness and dryness on the skin. In addition, the adhesion effect of the oil to the skin is weak, the powder floats, and the powder looks fluffy.Furthermore, fine lines and pores appear open, making the makeup look unattractive, and making up This also led to a decrease in the sustainability of the effect.

When it comes to foundations, in order to prevent changes in the feel of use, the combination of solid fat and liquid fat is often adjusted with a lance. It has poor adhesion, making it difficult to layer it, and it tends to become sticky and oily.Also, when it contains a lot of solid fat, it spreads hard and gives a waxy feel, making it difficult to layer. It is difficult to apply makeup with thick build-up and build-up, and requires a great deal of makeup technique.In addition, considering the stability of the foundation itself, there is a range of the feel of the foundation that can be adjusted by one's own effort. It was limited to a certain range.

As a result of intensive research to overcome these drawbacks, the present inventor found that cosmetics containing compression-disintegrating soft spherical resin capsules containing various ingredients are particularly suitable for makeup cosmetics. The present invention has been completed here.

The present invention is a cosmetic product that contains one or more compression-disintegrable soft spherical resin capsules containing one or more ingredients selected from skin softening ingredients, fragrances, and medicinal ingredients.

The term "compression-disintegrable soft spherical resin capsule" as used herein refers to a resin capsule that is constructed so that the resin film of the capsule is broken by the pressure of a finger or the like during the application of makeup, and the various ingredients contained therein are released.

The compression-disintegrable soft spherical resin capsules used in the present invention preferably have a particle size of about 1 to 100 μm. If the capsule particle size is too small, such as 1 μm, when used as a cosmetic, the expected tactile effects on the skin (smoothness, softness, ease of spreading) due to the soft spherical shape will not be achieved. Moreover, if it exceeds 100 .mu.m, a rough and strange feeling will be produced.Considering the particle size distribution during the production of resin capsules, the average particle diameter that satisfies the above particle size range of 1 to 100 .mu.m will be approximately 5 to 40 .mu.m. Moreover, the spherical shape in the capsule naturally includes not only a true spherical shape but also an ellipse and other similar spherical shapes.

Furthermore, the amount of compression-disintegrable soft spherical resin capsules encapsulating various ingredients in cosmetics varies depending on the intended product type, but a suitable range is 0.1 to 90 weight percent.

Moreover, the pressure resistance (rupture) strength of the compression-disintegrable soft spherical resin capsule in the encapsulated state is approximately 5 to 50 kg/-, and the flexibility is 5 to 30 kg/-. A pressure resistance lower than 5 kg/- is inappropriate when used in cosmetics because it is easily destroyed by external pressure or impact force during the equipment process.

On the other hand, if the pressure resistance exceeds 50 kg/cJ', the capsule will not be destroyed during the makeup operation, which is undesirable.

The amount of components contained in the compression-disintegrable soft spherical resin capsule is 10 to 95 percent by weight, preferably 50 to 95 percent by weight, based on the entire capsule. If the amount of capsules contained is less than 10 ζ-cents by weight, it is difficult to obtain an effect unless the total amount of capsules added to the cosmetic is significantly increased, which is disadvantageous in terms of economic cost. If the content exceeds 95% by weight, the strength of the capsule shell will drop significantly, making the membrane impractical from the viewpoint of pressure resistance.

When the material applied to the compression-disintegrable soft spherical resin capsule of the present invention contains skin softening ingredients, medicinal ingredients, fragrances, etc., the capsule membrane is sufficiently resistant to these inclusions in order to maintain their preservability. Select and use one that is non-transparent. Since it is necessary to add it to cosmetics, it is preferable that the capsule membrane does not contain monomers that may have harmful effects.

The compression-disintegrable resin capsule of the present invention is preferably non-quality in itself and transparent (light transmitting).
For example, acrylic acid, methacrylic acid, acrylic esters (methyl ester, ethyl ester, etc.), methacrylic acid esters (methyl ester, ethyl ester, etc.), vinyl acetate, vinyl chloride, vinylidene chloride, ethylene, styrene, divinylbenzene, ethylene glycol di A homopolymer or copolymer selected from 1 m or 2 or more methacrylates satisfies the above conditions. However, the materials are not necessarily limited to these materials as long as they satisfy the above conditions.

Next, the skin softening ingredients contained in the compression-disintegrable soft spherical resin capsules include higher fatty acids such as myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, linoleic acid, liluic acid, and isostearic acid, cetanol, Higher alcohols such as stearyl alcohol, oleyl alcohol, lanolin alcohol, waxes such as beeswax, carnauba wax, spermaceti wax, candelilla wax, liquid paraffin, squalane, microcrystalline wax, hydrocarbons such as petrolatum, malic acid Diisostearyl, isopropyl myristate, isopropyl palmitate, glycerin 2-ethylhexylate,
Examples include esters such as 2-octyldodecanol lactic acid, neopentyl glycol di-2-octyldodecyl diester, and diglycerin triisostearate.

In addition, medicinal ingredients include vitamins A, B2, etc., which are soluble in the skin softening ingredients. Examples include various vitamins such as D and E, and vitamin-like acting substances such as α-lipoic acid and ferulic acid. However, whether it is a skin softening ingredient, a medicinal ingredient, or a fragrance, any fatty acidic raw material that can be used in cosmetics is sufficient.
It is not limited to these.

The method itself for producing compression-disintegrable soft spherical resin capsules in the present invention involves combining the aforementioned monomers having polymerizable unsaturated bonds such as acrylic acid and styrene, various components to be included such as higher fatty acids, and a polymerization initiator. The monomers are mixed and dispersed in an aqueous medium containing an appropriate emulsifying and dispersing agent so as to form oil droplets having the desired particle size, and the monomers are polymerized. Target particle size, inclusion amount,
The pressure resistance strength is adjusted by selecting the type of monomer component, the ratio of the monomer component to the encapsulated component, the amount and type of emulsification dispersion aid, and the dispersion conditions.

The characteristics of the compressible disintegrating soft spherical resin capsules applied to the present invention will be described in detail below.First of all, within the same dosage form, the feeling of use (touch) varies greatly, and the width can be varied arbitrarily. It can be changed to

For example, in a smooth and fluid powder product,
When the capsule is broken down, the skin-softening ingredients contained in the capsule are exposed, resulting in a moist feeling when using the product. It is something that can be obtained inside. In this way, by incorporating various components or by blending two or more types of individual components, a wide variety of sensations can be obtained.

In addition, when applied to foundation, the ingredients contained in the capsule do not directly affect emulsification, so by incorporating skin softening ingredients into the capsule, for example,
Uses such as conventional foundations, which tend to spread harder due to changes in the amount of skin softening ingredients and skin moisturizing ingredients such as sugars, polyhydric alcohols, amino acids, water-soluble polymers, and lower organic acid salts. There is no change in sensation (touch),
You can expand the range of your sense of work.

Second, the compression-disintegrable soft spherical resin capsule does not feel like a foreign body to the touch after use, and does not visually remain on the skin at all. The reason for this is that the capsule has a spherical shape and is completely elastic, and has the property of being destroyed appropriately by external force during use on a desk. The microparticles of the destroyed shell become thin plate-shaped and adhere to the skin, and the capsule itself has high transparency (light transmittance) and has an affinity for oil. This is because the product does not give any residual p feeling at all.

Thirdly, even if the amount of skin softening ingredients such as oils in a powder product is substantially higher than the amount normally sold on the market, it is difficult to apply it to the puff or stick to the skin. Quality can be maintained and improved without causing deterioration of uniformity or caking phenomenon. In commercially available powder products, the surface of the powder is coated with oil, etc., but due to the increased amount of oil, a caking phenomenon occurs due to the weight of the coated powder itself and the adhesion force of the coated oil, causing the powder to dry. It is hard to adhere to the skin, and when applied to the skin, it is difficult to spread evenly, and the applied film adheres unevenly to the skin, significantly reducing the makeup effect. Powder products containing compression-disintegrable soft spherical resin capsules contain various ingredients such as oil agents within the capsule, so even if the amount of oil agent increases, there is no stickiness caused by oil agents and the product has high fluidity. The powder is light and spreads easily, creating a uniform coating on the desk and enhancing the makeup effect.

On the other hand, in powder products with a reduced amount of oil, when the capsule is destroyed, the exposed skin-softening ingredients become more compatible with the skin and also contribute to wetting the powder, improving the adhesion of the powder to the skin. This increases the longevity and adhesion of makeup, and eliminates all factors that reduce makeup effects such as white cast and fluffing.

Fourth, in aqueous, non-aqueous, dispersed, and emulsified cosmetics that contain medicinal ingredients such as fat-bath vitamins and vitamin-like substances, medicinal ingredients are incorporated into the PH of the system and cosmetics. However, by encapsulating such medicinal ingredients, the interaction with substances outside the shell can be cut off, which is effective in improving the stability of cosmetics over time. be.

Fifth, when a fragrance is encapsulated in a compression-disintegrable soft spherical resin capsule, it is destroyed appropriately by external force during use, which suppresses the drawbacks of conventional products in which the scent weakens and disappears over time. It has the effect of destroying the capsule and intensifying the scent.

Next, we will explain that the compression-disintegrable soft spherical resin capsules applied to the present invention have low pressure resistance [rupture 9 strength], a wide range of encapsulated amounts of oil, etc., and are excellent in terms of feel when used. Physical properties and sensory evaluation of soft spherical resin capsule alone (Table 1), and Examples (3) to (5) below
This is shown by a comparative evaluation (Table 2) based on a usage test between this product and a commercially available product. The evaluation of physical properties was based on the oil contained within the capsule (
In addition to measuring the amount of encapsulated squalane, the pressure resistance strength of the capsule was also measured.

[Measurement method of inclusion amount]

The non-encapsulated compression-disintegrable soft spherical resin capsule squalane was uniformly mixed and dispersed using a mercury, and the sample was placed on a magnetic white non-reflective plate measuring 3 x 3 cm. 03y'e Precisely weigh and apply to a uniform thickness, measure the total gloss level with a gloss meter (GS750), and calculate calibration a. Next, after cleaning with magnetic white non-reflective &'e ethyl alcohol, compressible collapsible soft spherical resin capsules containing squalane were placed on a 3 x 3 cm non-reflective plate. After RO and O3Y were accurately weighed and applied uniformly, the degree of gloss was measured using a gloss meter (GS750). The value was calculated as the average value of three times, and the inclusion amount was determined from the calibration curve.

[Measurement method of compressive strength]

A stainless steel cylinder with a diameter of 1:1#l is densely filled with compression-disintegrable soft spherical resin capsules.

While applying pressure little by little, on the other hand, using an optical microscope,
Check the point at which the capsule begins to break.

The point at which the capsule began to break was expressed as the pressure (breaking) strength.

Table 2: Long-term continuous use test for 4 months on 1100 women

Example 1 495 parts of methyl methacrylate (parts by weight, same below),
An oil phase consisting of 20 parts of methacrylic acid, 3000 parts of squalane, and 15 parts of diisopropyl peroxydicarbonate was prepared.

Next, a mixture of 6,300 parts of deionized water, 1,390 parts of a colloidal silica dispersion with a solid content of 20%, and 90 parts of a 10% water bath solution of a condensate of jetanolamine and adipic acid was adjusted to pH 3.5 with hydrochloric acid. Created.

Subsequently, the above oil phase and water phase were stirred at high speed for 60 seconds at 10.00 rpm to disperse the oil phase in the water phase, and then charged into a polymerization reactor No. 151 purged with nitrogen, and stirred at 30 rpm for 5 seconds.
The reaction was carried out at 5-60°C for 20 hours.

The product thus obtained was repeatedly passed through a centrifuge and washed with water to obtain a cake-like product with a moisture content of 32% and an average particle size of 19 μm.

This cake-like material was dried using a flash dryer, and the moisture content was 0.8.
% powdery compressible soft spherical resin capsules were obtained.

The content of squalane in this product was 84.8%, and the compressive strength was 12 to 15 KV/al.

Example 2 105 parts of methyl methacrylate (parts by weight, same below),
An oil phase consisting of 80 parts of styrene, 3200 parts of liquid paraffin, 100 parts of vitamin E, and 17 parts of azobisisobutyronitrile was prepared. Then, the same operation as in Example 1 was performed. However, the dispersion of the oil phase into the water phase is 10. OOOrp
m for 120 seconds. The resulting compression-disintegrable soft spherical resin capsules had a moisture content of 1.2%, an average particle size of 12 μm, and an encapsulated amount of 9
4.5%, and the compressive strength was 19-23 Kg/4.

Next, examples of the present invention will be shown. The blending ratio is in weight%.

Example 3 Face Powder C (mixed fragrance 0.3A-) was mixed with a Henschel mixer at low speed for 5 minutes, and then ground and mixed with a grinder.Then, this pulverized mixture was transferred to a Henschel mixer, and mixed at high speed at room temperature. After stirring by rotation, inject B'ffi and stir for 5 minutes, then inject C and stir for 3 minutes, then add D and mix and stir at low speed for 3 minutes, then take out Q and pass through the blower-shifter. Fill it into a container and use it as a product.

Example 4 Emulsified foundation 1 75 stearyl alcohol 0.6A
Heat at ℃ while stirring to disperse uniformly and keep warm.

Heat B to 80C and keep warm. The mixture is gradually added to the heated B'kA to emulsify it, and the emulsification temperature is maintained for a total of 10 minutes while stirring, and then the mixture is cooled to 45°C with stirring. At this time, C was heated to 1, continued stirring and cooling to 35°C, taken out, and filled into a container to obtain a product.

Example 5 Oil-based stick foundation BC mixed fragrance Heated to 0.2A'e70C, added f3f little by little without stirring to uniformly disperse, then added Bk and filled directly into a container while maintaining the temperature at 70°C. Thereafter, the product is left to cool.

Example 6 Cosmetic Cream - Liquid paraffin 20% by weight 1 stearic acid 5 beeswax 4 C (mixed fragrance 0.3A) was heated and dissolved at 70°C, dispersed with stirring, and heated and dissolved at 80°C while kept warm. Gradually add the mixture to B', which is a mixture, to emulsify it and hold at 750°C for 5 minutes. Then, when it has cooled to 40°C, add C and cool it to 30°C.Fill it into a container and obtain the cosmetic cream of the present invention. Ta.

Patent applicant Pola Chemical Industries, Ltd. Matsumoto Yushi Pharmaceutical Co., Ltd. Agent Patent attorney Asa Kato 67-

Claims (1)

[Scope of Claims] 1) A cosmetic product comprising one or more compression-disintegrable soft spherical resin capsules containing one or more ingredients selected from skin softening ingredients, fragrances, and medicinal ingredients. 2) The cosmetic composition according to claim 1, wherein the skin softening component is one or more selected from higher fatty acids, higher alcohols, waxes, hydrocarbons, and esters. 3) The cosmetic composition according to claim 1, wherein the medicinal ingredient is one or more selected from vitamins and vitamin-like active substances, which are skin softening ingredients according to claim 2. . 4) The compression-disintegrable resin capsule is a type selected from acrylic acid, methacrylic acid, acrylic ester, methacrylic ester, vinyl acetate, vinylidene chloride, vinylidene chloride, ethylene, divinylbenzene, and ethylene glycol dimethacrylate. The cosmetic according to claim 1, which is a homopolymer or copolymer as described above. 5) The cosmetic composition according to claim 1, wherein the compression-disintegrating soft spherical resin capsule has a pressure (breaking) strength of 5 to 50:9/-. 6) The cosmetic composition according to claim 1, wherein the amount of the ingredient encapsulated in the compression-disintegrable soft spherical resin capsule is 10 to 95 percent by weight of the entire capsule. 7) The cosmetic according to claim 1, wherein the cosmetic is a make-up cosmetic.