JP2714764B2 - Capsule-containing transparent cleansing cosmetic and method for producing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transparent cleansing cosmetic prepared by dispersing specific microcapsules containing at least an oily component in a non-aqueous or microaqueous gel, and a method for producing the same.

[0002]

2. Description of the Related Art Washing of various cosmetics, especially makeup cosmetics such as lipstick, eye shadow, foundation, etc.
Various types of cleansing cosmetics used for removing so-called makeup removers are commercially available, including cleansing oils, cleansing creams, and aqueous cleansing gels. Gel), oil-based cleansing gel, and the like. Among them, the gel type is preferred for its clean appearance and fresh feeling of use, and is attracting attention among cleansing cosmetics. Among the cleansing cosmetics, the oil-based gel type uses the gelling ability and liquid crystalline function of a surfactant, or emulsifies the inner phase and the outer phase according to the refractive index, and emulsifies it into a transparent state. The detergency is superior to that of an aqueous gel type prepared using the gelling ability of a water-soluble polymer, but is said to be inferior to that of a cleansing oil.

On the other hand, a solid, liquid or gaseous substance is uniformly coated with a thin film of a polymer substance such as gelatin or collagen, and the function of isolating or gradually releasing the inclusions from the external environment. There are soft capsules and microcapsules as material forms having the above, and some products using these have already been put to practical use in the fields of food, medicine, printing and the like. In these capsules, the inclusions are hermetically packaged by the coating, so that air oxidation, moisture absorption, and the like of the inclusions can be prevented, and the stability can be enhanced. In addition, low boiling points or volatile substances can be stably stored for a long period of time.

[0004] In the field of cosmetics and toiletries, products in a novel form incorporating such capsules have recently attracted attention, and are being applied to, for example, shampoos and makeup cosmetics. However, there are few products that contain capsules in basic cosmetics such as lotion or cream, and this has the problem that the polymer substance, which is the coating material of the capsules, gives a foreign-body sensation during use and remains on the skin. Because there is. In addition, the application to transparent non-aqueous or micro water-based cosmetics is also possible by blending capsules.
There has been a problem that the mixture system of the cosmetic ingredients becomes unstable and causes phase separation or turbidity, thereby impairing the beauty of the product.

[0005]

As described above, gel type cleansing cosmetics are suitable for consumer needs in terms of appearance, feeling of use, etc., but functionally require higher detergency. ing. Also, in the cosmetics field, new product forms incorporating capsules are attracting attention, and some products have been put into practical use.However, application to transparent non-aqueous or micro water-based cosmetics is achieved by blending capsules. However, there has been a problem that the mixed system becomes unstable, causing phase separation or turbidity. Therefore, an object of the present invention is to provide a capsule-containing transparent cleansing cosmetic composition in which capsules can be blended in a non-aqueous or micro-aqueous gel in a transparent state, and an improved cleansing effect. To develop a manufacturing method.

[0006]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to achieve the above-mentioned object, and as a result, by blending specific microcapsules in a non-aqueous or micro-aqueous gel, the conventional gel type cleansing has been achieved. The present inventors have found that a clear cleansing cosmetic having an enhanced cleansing effect as compared with a cosmetic can be obtained, and have completed the present invention. That is, the first of the gist of the present invention is a transparent cleansing cosmetic in which a water-soluble polyhydric alcohol-treated microcapsule containing at least an oil component is dispersed in a non-aqueous or microaqueous gel, and the second of the gist is An oily substance is mixed with a phase containing a water-soluble polyhydric alcohol and a hydrophilic nonionic surfactant to prepare a non-aqueous or finely water-based transparent gel, while enclosing an oily component and dipping in a water-soluble polyhydric alcohol. A method for producing a transparent cleansing cosmetic, characterized in that a prepared microcapsule is prepared and the capsule is dispersed in the gel.

First, the first aspect of the present invention will be described. The transparent cleansing cosmetic composition of the present invention comprises a non-aqueous or micro-aqueous gel and a microcapsule containing at least an oily component. The non-aqueous or micro-aqueous gel preferably contains a water-soluble polyhydric alcohol, a hydrophilic nonionic surfactant and an oily substance, and contains no water or about 10% by weight or less based on the whole gel. It refers to those containing up to 5% by weight of water. If the water content in the gel exceeds about 10% by weight, the viscosity of the gel decreases, and the microcapsules become difficult to be uniformly dispersed in the gel. The gel is a so-called mixed phase containing a water-soluble polyhydric alcohol, a hydrophilic nonionic surfactant and, if necessary, water and, if necessary, forms a gel state with an oily substance or the like. It is preferable to use a compound having a function that can be easily mixed with up cosmetics and the like and can be washed away with water.

The water-soluble polyhydric alcohol for forming the non-aqueous or microaqueous gel of the present invention includes propylene glycol, dipropylene glycol, polypropylene glycol (n = 3 to 10), 1,3-butylene glycol, ethylene Glycol, diethylene glycol, triethylene glycol, polyethylene glycol (n = 4
10), glycerin, diglycerin, polyglycerin (n = 3 to 15), erythritol, sorbitol, maltitol, xylitol, glucose, sucrose, etc., of which glycerin and / or 1,3- Butylene glycol.

The nonionic surfactants may be those used in ordinary cosmetics, pharmaceuticals or quasi-drugs, such as hexaglycerin mono-, di- or trilaurate,
Mono-, di- or triesters of polyglycerol having a degree of polymerization of 4 to 15, preferably 6 to 10 such as decaglycerin mono, di or tristearate and a fatty acid having 8 to 20 carbon atoms (hereinafter simply referred to as polyglycerin fatty acid ester) ), Mono- or diesters of glycerin with the fatty acids (glycerin fatty acid esters), mono-, sesqui- or di-esters of sorbitol or sorbitan with the fatty acids, monoesters of propylene glycol or dipropylene glycol with the fatty acids, the glycerin Fatty acid ester, ethylene oxide or propylene oxide adduct of sorbitan fatty acid ester and propylene glycol fatty acid ester, molecular weight of 100 to 2,000
Mono- or diesters of the above-mentioned fatty acids with polyethylene glycol or polypropylene glycol, polyoxyethylene alkyl ether having an alkyl group of 8 to 20 carbon atoms, polyoxypropylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene hydrogenated castor oil, etc. Can be given. Among them, it is necessary to use at least one having an HLB of 10 or more, and specifically, as polyglycerin fatty acid ester, decaglycerin monostearate, decaglycerin tristearate, decaglycerin monooleate, decaglycerin sesquioleate, Oleic acid esters are preferred as decaglycerin monolaurate, hexaglycerin monolaurate, tetraglycerin monolaurate, polyoxyethylene or polyoxypropylene addition hardened castor oil, polyoxyethylene or polyoxypropylene addition sorbitol fatty acid esters.

The oleaginous substances are low-viscosity animal and vegetable oils and fats, synthetic esters, higher aliphatic alcohols, hydrocarbons and silicones generally used in cosmetics, pharmaceuticals or quasi-drugs. The following can be given as specific examples. Animal and vegetable oils and fats (including waxes) include olive oil, safflower oil, sunflower oil, jojoba oil, orange roughy oil, grape seed oil, chamomile oil, macadamia nut oil, apricot kernel oil, corn oil, evening primrose oil, mink oil Olive oil and jojoba oil are preferred.

Synthetic esters include isopropyl myristate, isopropyl palmitate, 2-ethylhexyl isononate, isononyl isononate, methyl isostearate, tri-2-ethylhexanoic acid glyceride, and neopentyl glycol di-2-ethyl Hexanoate, pentaerythritol-tetra-2-ethylhexanoate, di-2-ethylhexyl succinate, di-2-ethylhexyl adipate, di-2-ethylhexyl sebacate, isodecyl isononane,
Isotridecyl isononate and the like can be exemplified. Of these, isopropyl myristate, isopropyl palmitate, isononyl isononate, and tri-2-ethylhexanoic acid glyceride are more preferable, and most preferable are isopropyl myristate and tri-2-yl. Ethylhexanoic acid glyceride.

The higher aliphatic alcohols include oleyl alcohol, 2-heptylundecanol, methyl-branched isostearyl alcohol, 2-octyldodecanol and the like, and preferably oleyl alcohol and methyl-branched isostearyl alcohol. The hydrocarbons include liquid paraffin, squalane, squalene, isoparaffin and the like, more preferably liquid paraffin, squalane, and most preferably liquid paraffin. Silicones include dimethylpolysiloxane, methylphenylpolysiloxane, polysiloxane modified with fatty acid or aliphatic alcohol, and more preferably dimethylpolysiloxane, methylphenylpolysiloxane, and most preferably dimethylpolysiloxane.

The amounts of the water-soluble polyhydric alcohol, the nonionic surfactant and the oily substance in the whole gel are set to satisfy the seemingly contradictory functions of enhancing the cleansing effect and facilitating the washing with water.
The water-soluble polyhydric alcohol is set at 10 to 60% by weight, more preferably 15 to 50% by weight, optimally 15 to 35% by weight, and the nonionic surfactant is set at 1 to 20% by weight, more preferably 1 to 20% by weight. 15% by weight, most preferably 5-10% by weight
And the content of the oily substance is preferably 30 to 90% by weight, preferably 50 to 80% by weight, and most preferably 60 to 80% by weight. If the combination ratio is other than this, the above function is not satisfied. The non-aqueous or micro-aqueous gel of the present invention may contain an antioxidant, a coloring agent, a fragrance, a preservative, and the like in addition to the above components, as long as the purpose of the present invention is not contradicted.

On the other hand, in the present invention, the microcapsules contain at least an oily component and are treated with a water-soluble polyhydric alcohol. Microcapsules are sodium alginate, agar, gelatin, carrageenan, gum arabic, carboxymethylcellulose, hydroxyethylcellulose, methylcellulose, carboxyvinyl polymer, (meth)
A film-forming material such as acrylic acid polymer, polyvinyl alcohol, collagen, soybean protein and the like, preferably agar and gelatin, most preferably agar or agar and glycerin (mixing weight ratio is 1% by weight aqueous solution of agar / glycerin = 100/1 to 20) ), A film is formed with this aqueous solution, and oily components and, where necessary, animal and plant extracts, fragrances, pigments, etc. are included therein. For example, those formed into seamless capsules, seamless capsules, so-called seamless capsules, etc. It is. The shape may be spherical, oblong, football, or the like, and the size can be appropriately selected from 0.1 to 5 mm. 1-3 mm in the microcapsule of the present invention
Is preferable. In the present invention, the microcapsule coating is further contacted (blended, coated, dipped, sprayed, etc.) with a water-soluble polyhydric alcohol, and the state is immersed and maintained for a required time, for example, 1 to 20 days. I do. By using such a microcapsule treated with a water-soluble polyhydric alcohol, the capsule can be blended in a non-aqueous or microaqueous gel in a transparent state.

The oil component contained in the microcapsules is preferably low in viscosity, since the cleansing cosmetic of the present invention is intended to exhibit a high cleansing effect, and the viscosity is 100 centipoise / 25 ° C. or less. , More preferably 60 centipoise / 25 ° C or less, and most preferably 1 to 40 centipoise / 25 ° C. As the low-viscosity oily component, those similar to the oily substances to be incorporated in the above-mentioned non-aqueous or micro-aqueous gel can be specifically exemplified. Among them, isopropyl myristate, isopropyl palmitate, isononyl isononate, Decyl isononate, isotridecyl isononate, tri-2-ethylhexanoic acid glyceride, liquid paraffin, squalane, and dimethylpolysiloxane are more preferred.

The plant and animal extracts include aloe extract, chamomile extract, gardenia extract, sage extract, assembly extract, thyme extract, chimpanzee extract, corn extract,
There are mugwort extract, lavender extract, lemon extract, orange extract and the like, and the fragrance and pigments may be known ones blended in ordinary cosmetics. The proportion of the oily component in the whole microcapsules is 30 to 70% by weight, more preferably 4 to 70% by weight.
It is 0 to 60% by weight, the proportion of animal and plant extracts is 5% by weight or less, and the amount of flavors and pigments is appropriate. The water-soluble polyhydric alcohol for treating the microcapsules may be the same as or different from the one mixed in the gel. However, in practice, glycerin and / or 1,3-butylene glycol are desirable. % Concentration, preferably 70%
An aqueous solution having a concentration of about 90% by weight may be brought into contact with the microcapsules.

Thus, the transparent cleansing cosmetic of the present invention is obtained by adding the above-mentioned microcapsules to the above-mentioned non-aqueous or micro-aqueous gel, mixing them gently and dispersing them. 1 to
It contains 20% by weight, preferably 2 to 10% by weight of microcapsules. The cleansing cosmetic of the present invention keeps a transparent state and is stable, and is applied to a makeup cosmetic or the like applied on the skin in the same manner as a conventional oil-based cleansing gel, massage-mixed, and efficiently washed with water. The cosmetic can be washed off together with the sebum component, the sweat component and the dirt substance.

Next, a method for producing a transparent cleansing cosmetic which is the second aspect of the present invention will be described. The method characterized in the present invention is to prepare a non-aqueous or micro-aqueous transparent gel by mixing an oily substance with a phase containing a water-soluble polyhydric alcohol and a hydrophilic nonionic surfactant, while enclosing at least the oily component. And then preparing microcapsules immersed in a water-soluble polyhydric alcohol, and dispersing the capsules in the gel.

The non-aqueous or slightly water-based transparent gel is prepared by adding the above-mentioned water-soluble polyhydric alcohol, hydrophilic non-ionic surfactant and, if necessary, a hydrophilic phase component such as water to a suitable container at about 70 ° C. The mixture is heated and dissolved, and the rotation speed is 1 using a stirrer such as a homomixer, a homogenizer, and a vacuum emulsifier.
A hydrophilic phase is prepared by mixing at 000-5000 rpm. Then, the oily substance is gradually added to the hydrophilic phase while continuing stirring at the same temperature, and cooled to 30 ° C. or lower to prepare a transparent non-aqueous or micro-aqueous transparent gel.

On the other hand, when the microcapsules are, for example, seamless capsules, capsules obtained by mixing agar, water and, if necessary, glycerin or the like into a uniform state using a double tube (for example, double cylindrical) orifice. An aqueous solution of the film-forming substance is connected so as to flow between the outer cylinder and the inner cylinder, and capsule inclusions in which at least the oily component is uniformly mixed with animal and plant extracts, flavors, and the like flow through the inner cylinder. The orifice tip is connected to a coagulating solution containing polyvalent metal ions such as calcium ions, magnesium ions, and aluminum ions or a fat or oil which exhibits a liquid state at room temperature (20 to 25 ° C.). A microcapsule having an inclusion is prepared by dropping on a triglyceride of a fatty acid in a chain. The microcapsules are then added to an aqueous solution of the water-soluble polyhydric alcohol, preferably 50-95% by weight, optimally 70-90% by weight, at room temperature for 1-20 days.
More preferably, after immersion for 5 to 15 days, the mixture is filtered to prepare water-soluble polyhydric alcohol-treated microcapsules. If the alcohol concentration in the water-soluble polyhydric alcohol aqueous solution exceeds 95% by weight, the microcapsules become too hard and brittle, and undesirably give a foreign-body sensation when used as a cleansing cosmetic. Conversely, if it is less than 50% by weight, it will be difficult to obtain a clear cleansing cosmetic.

Next, the non-aqueous or slightly water-based transparent gel is gently cooled at room temperature using a stirrer such as a propeller mixer, a paddle mixer, or a planetary mixer at a rotational speed of 10 rpm.
By adding and dispersing the water-soluble polyhydric alcohol-treated microcapsules while stirring at 100 rpm, the capsule-containing transparent cleansing cosmetic composition of the present invention can be obtained.

[0022]

EXAMPLES The present invention will be described in more detail with reference to the following Examples, but it should not be construed that the present invention is limited thereto. Example 1 First, a microwater-based gel was prepared using the components shown in Table 1.
That is, the hydrophilic phase component was heated to 70 ° C., and the hydrophobic phase component was gradually stirred while being stirred at 3000 rpm using a stirrer (trade name: vacuum emulsifier PVQ-3, manufactured by Mizuho Industry Co., Ltd.). Then, the mixture was cooled to 30 ° C. to obtain a finely water-based gel. This gel was stored in a temperature stability tester in which -10 ° C to 40 ° C was cycled for 1 hour in 24 hours, and the stability was examined. As a result, the gel was maintained in a transparent state without phase separation for 6 months or more.

On the other hand, microcapsules were prepared using the components shown in Table-2. Using a well-known double cylindrical orifice, the cylinder side is filled with uniformly dissolved inclusions, and the space between the cylinder and the outer cylinder is filled with an aqueous solution of a capsule film forming substance, and both are filled with medium-chain saturated fatty acids. The solution was dropped into triglyceride (trade name: ODO, manufactured by Nisshin Oil Co., Ltd.). The solid content was separated by filtration to prepare a spherical micro seamless capsule having a diameter of 2 mm containing an oily component. Next, this microcapsule
1% by weight in an aqueous solution of 1,3-butylene glycol at room temperature.
After immersion for 0 days, the mixture was filtered to obtain microcapsules treated with a water-soluble polyhydric alcohol.

The blending ratio was set so that the ratio of the microaqueous gel to the water-soluble polyhydric alcohol-treated microcapsules was 95: 5 (weight ratio), and a mixing machine (manufactured by Mizuho Industry Co., Ltd., trade name: vacuum emulsifier PVQ) (Type-3) at a rotation speed of 5 to 50 rpm, water-soluble polyhydric alcohol-treated microcapsules were added and dispersed in the microaqueous gel to prepare a capsule-containing transparent cleansing cosmetic composition of the present invention.

As a result of examining the storage stability using the above-mentioned temperature stability tester, it was found to remain transparent without turbidity for more than 6 months and to have no phase separation. In addition, when the condition of use was monitored by a professional panel of 10 people, it was less sticky and gave a fresher, fresher feel than commercially available oil-based cleansing gels, and there was no foreign body feeling due to the capsule formulation, and lipstick floating and cleansing power. Excellent and good washability with water.

[0026]

[Table 1] Note 1) Product name: KF-96, manufactured by Shin-Etsu Silicone Co., Ltd.

[0027]

[Table 2] 1) Nisshin Oil Co., Ltd., trade name: TIO 2) Nisshin Oil Co., Ltd., trade name: Sarakos 99

Example 2 In Example 1, a non-aqueous gel was prepared using the components shown in Table 3 instead of the components of the microaqueous gel (Table 1). Instead, a microcapsule (seamless capsule having a diameter of 1.5 mm) was prepared using the components shown in Table 4, and instead of immersing the microcapsule in a 70% by weight aqueous 1,3-butylene glycol solution, an 80% by weight aqueous glycerin solution was used. A capsule-containing transparent cleansing cosmetic composition of the present invention was prepared under the same conditions except that the cosmetic composition was immersed. This product had a storage stability by the temperature stability tester described in Example 1 of more than 6 months, was not cloudy, was transparent, and did not undergo phase separation. In addition, the feeling of use was a non-sticky, refreshing feel, no foreign body sensation due to the destruction of the blended capsule caused by massage, and was excellent in cleansing effect for makeup cosmetics and washing-off with water.

[0029]

[Table 3]

[0030]

[Table 4]

Example 3 A microaqueous gel was prepared using the components shown in Table 5 instead of the microaqueous gel components (Table 1) in Example 1, and the microcapsule components (Table 2) were used. Instead, microcapsules (seamless capsules having a diameter of 3 mm) were prepared using the components shown in Table 6, and 70% by weight of the microcapsules were prepared.
A capsule-containing transparent cleansing cosmetic of the present invention was prepared under the same conditions except that the cosmetic was immersed in a 90% by weight aqueous glycerin solution instead of immersed in a 1,3-butylene glycol aqueous solution. It was transparent without turbidity for more than 6 months with the temperature stability tester described in Example 1,
No phase separation was observed. In addition, the feeling of use was not sticky, had a refreshing feel, had no foreign body sensation due to the destruction of the blended capsule caused by massage, and was excellent in cleansing effect on makeup cosmetics and washing off with water.

[0032]

[Table 5]

[0033]

[Table 6]

Comparative Example 1 In Example 1, after the microcapsules were prepared, they were dispersed in a microaqueous gel without being immersed in a 70% by weight aqueous solution of 1,3-butylene glycol. The storage stability of this product was tested by the method described in Example 1. As a result, cloudiness began to be generated immediately after dispersion, and the whole was completely clouded the next day.

Comparative Example 2 In Example 1, the oily components (liquid paraffin,
A microcapsule containing only extracts was prepared without containing tri-2-ethylhexanoic acid glyceride and isononyl isononate. This was dispersed in the microaqueous gel in the same manner as in Example 1. This and Example 1
As a result of comparison with the cleansing cosmetic obtained in the above, the transparency and feel were almost the same, but the lipstick floating and the cleansing power of this comparative example were clearly inferior.

[0036]

EFFECTS OF THE INVENTION The capsule-containing transparent cleansing cosmetic composition of the present invention can blend microcapsules in a non-aqueous or microaqueous gel in a transparent state for a long period of time, thereby having a beautiful appearance and a fresh feeling of use. It has an excellent cleansing effect without impairment, and the capsule pieces resulting from the destruction of the blended capsules can be sufficiently washed away with water, so that there is no foreign substance sensation due to the remaining. Further, according to the method of the present invention, a capsule-containing transparent cleansing cosmetic can be easily produced.

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Claims (9)

(57) [Claims] 1. A transparent cleansing cosmetic comprising a water-soluble polyhydric alcohol-treated microcapsule containing at least an oily component dispersed in a non-aqueous or microaqueous gel. 2. The cosmetic according to claim 1, wherein the non-aqueous or micro-aqueous gel contains a water-soluble polyhydric alcohol, a hydrophilic nonionic surfactant and an oily substance. 3. The water-soluble polyhydric alcohol is glycerin and / or 1,3-butylene glycol, the hydrophilic nonionic surfactant is decaglycerin monostearate, and the oily substance is liquid paraffin and dimethylpolysiloxane. The cosmetic according to claim 1 or 2. 4. The oily component has a viscosity of 100 centipoise / 2.
The cosmetic according to any one of claims 1 to 3, which is a low-viscosity oily substance having a temperature of 5 ° C or lower. 5. The cosmetic according to claim 1, wherein the coating of the microcapsules comprises agar or agar, glycerin and water, and is brought into contact with an aqueous solution of a water-soluble polyhydric alcohol. 6. A non-aqueous or micro-aqueous transparent gel is prepared by mixing an oily substance with a phase containing a water-soluble polyhydric alcohol and a hydrophilic non-ionic surfactant. A method for producing a transparent cleansing cosmetic, comprising preparing a water-soluble polyhydric alcohol-treated microcapsule immersed in an aqueous solution of about 95% by weight of a water-soluble polyhydric alcohol, and dispersing the capsule in the gel. 7. The water-soluble polyhydric alcohol is glycerin and / or 1,3-butylene glycol, the hydrophilic nonionic surfactant is decaglycerin monostearate, and the oily substance is liquid paraffin and dimethylpolysiloxane. 7. The method according to claim 6, wherein 8. The oily component has a viscosity of 100 centipoise / 2.
8. The production method according to claim 6, wherein the substance is a low-viscosity oily substance having a temperature of 5 ° C. or lower. 9. The microcapsule coating of agar or agar and glycerin and water.
The production method according to any one of claims 1 to 4.