TW201929830A - High internal phase water-in-oil type emulsified cosmetic composition and cosmetic - Google Patents

Abstract

The present invention relates to a high internal phase water-in-oil type emulsified cosmetic composition and a cosmetic, and more specifically to a cosmetic composition that using an emulsifier including a crosslinked polymer linked by hydrophilic linking group and a branched polymer linked by hydrophilic linking group to have a low viscosity property, so as to be easily impregnated into a carrier. The cosmetic composition of present invention is capable of maximizing the feeling of moisture due to its high internal phase content in the aqueous phase portion.

Description

High internal phase water-in-oil emulsified cosmetic composition

The present invention relates to a high internal phase water-in-oil cosmetic composition. More specifically, it relates to a composition comprising a cross-linked polymer connected by a hydrophilic bonding group and a branch connected by a hydrophilic bonding group It is an emulsifier of chain polymer and a low viscosity, high internal phase water-in-oil cosmetic composition that can be easily impregnated into a carrier.

Generally, when the emulsified product is used in cosmetics, pharmaceuticals, food, etc., it is roughly divided into two forms, one of which is the state in which the oil is dispersed into water in the form of small particles, that is, the oil-in-water type (O / W, oil in water type) emulsifier, and the other is a water-in-oil type (W / O, water in oil type) emulsified state in which water is dispersed in oil.

Among them, in cosmetics for protecting the skin, etc., the water-in-oil cosmetic composition forms an oil film on the skin that is stronger than the oil-in-water cosmetic composition, inhibits the evaporation of moisture from the skin, and continuously transmits moisture and skin activity for a long time Substance, therefore excellent skin protection effect. In addition, the water resistance of cosmetic compositions in the form of water-in-oil is better than that of oil-in-water, so it is widely used in sunscreen products to protect the skin from ultraviolet rays in summer, baby cream to prevent diaper rash in children Hand cream to prevent excessive sebum loss.

However, the external phase of the emulsified cosmetic composition in the form of water-in-oil is oil, so it has many advantages in water resistance, makeup durability and skin protection effects. On the contrary, it has the following disadvantages: it has a heavy sense of use, cosmetic film It is thicker than the oil-in-water emulsified cosmetic composition and the permeability of the skin decreases, thereby hindering the skin's breathing and causing damage to the skin. In addition, the emulsion stability is poor, the preparation cost is high or it is difficult to prepare, etc. There are also economic disadvantages.

Generally, in an emulsion, if the internal phase volume ratio exceeds 74%, droplets (polydroplets) do not maintain a spherical shape. In the case of such a physical structure, the action of droplets is limited, and as a result, the emulsion exhibits a frost-like shape with high viscosity. The above-mentioned emulsion is called a high internal phase emulsion (High Internal Phase Emulsion). The high internal phase emulsion can dissolve various substances in a large internal phase, so it is effectively used as a dosage form for cosmetics and pharmaceuticals.

However, previous high internal phase emulsions exhibited a creamy shape with a high viscosity, and therefore are not suitable for a carrier dosage form that has recently attracted attention such as moisture absorption to sponges and the like. In addition, in order to prepare a high internal phase emulsion, a method of slowly adding a large amount of water phase to at least an amount of oil phase to prepare an emulsion may have a problem of consuming a large amount of time and effort.

In order to solve the above problems, Korean Registered Patent No. 10-1428474 discloses a method in which the emulsification process is divided into two steps to prepare a high internal phase water-in-oil emulsified cosmetic composition. In the case of preparing an emulsified composition by the above method, it has the advantage of reducing the time and effort in the preparation process. On the contrary, there is a degree that the prepared high internal phase emulsified composition cannot be supported to a degree such as sponge The problem of low viscosity.

[Prior Art Literature] [Patent Literature] Korean Published Patent No. 2017-0027666, "High internal phase water-in-oil cosmetic composition" Korean Published Patent No. 2015-0022617, "High internal phase water-in-silicon excellent in stability (W / S) Dosage form cosmetic composition "

[Problem to be solved by invention]

Therefore, the inventors of the present invention discovered the following circumstances to complete the present invention: in order to solve the above-mentioned problems, a high internal phase water-in-oil form cosmetic composition for high moisture retention is prepared, and a specific emulsifier is used At this time, the cosmetic composition exhibits low viscosity characteristics so that it can be impregnated into sponges and the like.

Therefore, an object of the present invention is to provide a high internal phase water-in-oil form low viscosity cosmetic composition, which includes an aqueous phase part, an oil phase part and a powder part, characterized in that the oil phase part includes silicone oil and has a hydrophilic bond A bonded emulsifier. The emulsifier includes a cross-linked polymer connected by a hydrophilic bonding group and a branched polymer connected by a hydrophilic bonding group.

Another object of the present invention is to provide a cosmetic comprising a high internal phase water-in-oil form low-viscosity cosmetic composition and a carrier impregnated with the aforementioned cosmetic composition.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a high internal phase water-in-oil low-viscosity cosmetic composition comprising an aqueous phase part, an oil phase part and a powder part, characterized in that the oil phase part includes silicone oil and has a hydrophilic bond A bonded emulsifier. The emulsifier includes a cross-linked polymer connected by a hydrophilic bonding group and a branched chain polymer connected by a hydrophilic bonding group.

In an embodiment of the present invention, with respect to 100% by weight of the overall composition, the above-mentioned composition includes 50% to 80% by weight of the water phase portion, 10% to 40% by weight of the oil phase portion, and 1% to 20% by weight Weight% powder part.

In an embodiment of the present invention, the cross-linked polymer connected by a hydrophilic bonding group is selected from polydimethylsiloxane / polyglycerin-3 cross-linked polymer, lauryl polydimethylsilicone Any one or more of the group consisting of oxane / polyglycerin-3 crosslinked polymer and polyglycerin-3 / lauryl polydimethylsiloxyethyl polydimethylsiloxane crosslinked polymer.

In an embodiment of the present invention, the branched polymer connected by a hydrophilic bonding group is selected from polyglycerin-3 disilaxane polydimethylsiloxane, polyglycerin-3 polydimethylsiloxane Any one or more of the group consisting of disilaoxyethyl polydimethylsiloxane and lauryl polyglycerin-3 polydimethylsiloxyethyl polydimethylsiloxane.

In an embodiment of the present invention, the above-mentioned high internal phase water-in-oil low viscosity cosmetic composition is characterized in that, relative to the total weight of the composition, it includes 1% to 10% by weight connected by a hydrophilic bonding group Of the aforementioned cross-linked polymers.

In an embodiment of the present invention, the above-mentioned low-viscosity cosmetic composition in a high internal phase water-in-oil form is characterized in that, relative to the total weight of the composition, it includes 0.1% to 1% by weight connected by a hydrophilic bonding group Of the aforementioned branched chain polymers.

In an embodiment of the present invention, the high internal phase water-in-oil low viscosity cosmetic composition is characterized in that the silicone oil is selected from the group consisting of polydimethylsiloxane, trisiloxane, disilaxane, Pentasiloxane, cyclohexasiloxane, methyl polytrimethylsiloxane, octyl polysiloxane, phenyl polytrimethylsiloxane, diphenyl polydimethylsiloxane, diphenyl Any one or more of the group consisting of trisiloxyphenyl polytrimethylsiloxane and polydimethylsiloxanol.

In an embodiment of the invention, the above-mentioned high internal phase water-in-oil low-viscosity cosmetic composition is characterized by comprising 10% to 40% by weight of the above-mentioned silicone oil relative to the total weight of the composition.

In an embodiment of the present invention, the above-mentioned high internal phase water-in-oil low viscosity cosmetic composition is characterized in that: the above-mentioned water phase portion includes a member selected from the group consisting of purified water, a humectant, an ion blocking agent, an emulsion stabilizer, and a preservative And any one of the ethnic groups composed of spices.

In an embodiment of the present invention, the high internal phase water-in-oil low viscosity cosmetic composition is characterized in that the powder part includes a cross-linked polymer selected from the group consisting of titanium dioxide, zinc oxide, talc, iron oxide, and methyl methacrylate. Any one or more of the group consisting of substances, mica, kaolin, sericite, alumina, barium sulfate, polymethyl methacrylate, organic pigments and natural pigments.

In an embodiment of the present invention, the high internal phase water-in-oil low viscosity cosmetic composition is characterized in that the viscosity of the cosmetic composition is 10,000 cps to 30,000 cps (centipoise).

In addition, in order to achieve the above object, the present invention provides a cosmetic comprising: the above-mentioned high internal phase water-in-oil form low-viscosity cosmetic composition; and a carrier to impregnate the above-mentioned cosmetic composition.

In an embodiment of the present invention, the above cosmetics further include an applicator for picking up the cosmetic composition from a carrier impregnated with a low-viscosity cosmetic composition in the form of a high internal phase water-in-oil.

[Effect of the invention]

The high internal phase water-in-oil form low-viscosity cosmetic composition of the present invention has the following advantages: emulsification using a cross-linked polymer connected by a hydrophilic bonding group and a branched chain polymer connected by a hydrophilic bonding group The agent has low viscosity and can be impregnated into the carrier, and the content of the internal phase as the water phase portion is high, which can maximize the sense of water.

Hereinafter, the present invention will be described in more detail.

The terms or words used in this specification and the patent application scope of the invention should not be limitedly interpreted as ordinary meanings or meanings in dictionaries. In order to explain their own inventions in the best way, the inventors should base themselves on appropriately defined terms The principle of the concept is interpreted as meaning and concept consistent with the technical idea of the present invention.

The terms used in the present invention are only used to describe specific embodiments, and are not intended to limit the present invention. As long as other meanings are not expressly expressed in the text, expressions in the singular include expressions in the plural. In the present invention, the terms "including" or "having" should be understood as indicating the existence of the features, numbers, steps, actions, constituent elements, parts, or combinations thereof described in the specification, and does not exclude one or more than one in advance The possibility of existence or additional possibility of other features, numbers, steps, actions, constituent elements, parts, or combinations thereof.

The present invention provides a high internal phase water-in-oil form having a low viscosity physical property using an emulsifier including a cross-linked polymer connected by a hydrophilic bonding group and a branched chain polymer connected by a hydrophilic bonding group Cosmetic composition.

High internal phase water-in-oil form cosmetic compositions generally form 60% to 90% of the water-in-oil form emulsion to form a large ratio of the internal phase and increase the size of the emulsified particles, thereby having the following characteristics: , For example, the force of rubbing by hand, etc., the water phase components constituting the internal phase flow out and unite. It can be observed with the naked eye that water droplets burst and condense, so it is called "water burst" dosage form, which is a dosage form that can increase the user's psychological satisfaction and aesthetic satisfaction.

In the present invention, the "high internal phase" refers to a case where the moisture value measured after applying the cosmetic of the present invention to the skin is sufficiently high and water droplets can be formed.

In addition, an object of the present invention is to provide a cosmetic composition in which the internal phase of the above-mentioned high internal phase water-in-oil cosmetic composition includes a powder phase and is stabilized to exhibit physical properties of low viscosity, whereby it can be impregnated into sponges and the like Thing.

However, it is not intended to limit the cosmetic composition of the present invention to a specific range by this, and the cosmetic composition in the specific range described above should only be understood as an implementation means for implementing the present invention more widely.

The invention provides a high internal phase water-in-oil form low-viscosity cosmetic composition, which includes an aqueous phase part, an oil phase part and a powder part, characterized in that the oil phase part includes silicone oil and an emulsifier having a hydrophilic bonding group The emulsifier includes a cross-linked polymer connected by a hydrophilic bonding group and a branched polymer connected by a hydrophilic bonding group.

In addition, the cosmetic composition of an embodiment of the present invention may be a high internal phase water-in-oil form low-viscosity cosmetic composition characterized by the following: the content of the composition is not particularly limited, but includes 100% by weight of the entire composition, including 50 to 80% by weight of the water phase portion, 10 to 40% by weight of the oil phase portion, and 1 to 20% by weight of the powder portion.

Hereinafter, each core structure exemplified in the preparation of the present invention will be described in more detail.

Oil Phase Department

An embodiment of the present invention may include 10% to 40% by weight, preferably 25% to 35% by weight of the oil phase portion relative to the entire 100% by weight of the cosmetic composition.

In addition, the oil phase portion of the present invention may include silicone oil and emulsifier, and may include 3% to 10% by weight of emulsifier relative to the weight of the entire cosmetic composition. If the content of the emulsifier is less than 3% by weight, a composition with excellent stability cannot be prepared, and when it exceeds 10% by weight, there is a problem that hinders the sense of use of cosmetics, so it is appropriately adjusted within the above range.

The emulsifier of the present invention may include: a main emulsifier, including a cross-linked polymer connected by a hydrophilic bonding group; and an auxiliary emulsifier, including a branched chain polymer connected by a hydrophilic bonding group.

The previous high internal phase water-in-oil cosmetic composition does not distinguish between the use of emulsifiers including the above-mentioned cross-linked polymers and branched-chain polymers, but in the present invention, it is distinguished to use cross-links connected by hydrophilic bonding groups. As a main emulsifier, a linked polymer can be used to prepare a cosmetic composition that stabilizes cosmetic droplets with a high internal water phase and exhibits physical properties of low viscosity.

Therefore, in an embodiment of the present invention, as the main emulsifier including a cross-linked polymer connected by a hydrophilic bonding group, it may be selected from cross-linked polymerization of polydimethylsiloxane / polyglycerin-3 It is composed of lauryl polydimethylsiloxane / polyglycerin-3 cross-linked polymer and polyglycerin-3 / lauryl polydimethylsiloxyethyl polydimethylsiloxane cross-linked polymer Any one or more of the groups of, preferably a polydimethylsiloxane / polyglycerin-3 cross-linked polymer.

It is preferred that the overall composition contains 1 to 10% by weight of the cross-linked polymer connected by a hydrophilic bonding group included in the above-mentioned main emulsifier. If the content is less than 1% by weight, the particles do not It is stable, and when the content exceeds 10% by weight, the feeling of use becomes dry and sticky due to the increase in hardness, so it is appropriately used within the above range.

In principle, in the case of high internal phase morphology, the particles themselves exhibit swelling properties, so the movement of the above particles is reduced to exhibit high viscosity physical properties. However, as an embodiment of the present invention, it is different from polydimethylsiloxane / PEG-10 / 15 crosslinked polymer, etc., as a main emulsifier including a crosslinked polymer connected by a hydrophilic bonding group Of polydimethylsiloxane / polyglycerin-3 cross-linked polymer, polyglycerol as a hydrophilic bonding group is larger than polyethylene glycol, so when it is used as an emulsifier, Unstable emulsification to form large and uneven droplets. Therefore, the particles are not uniform and their stability is reduced, thereby exhibiting physical properties of low viscosity.

As shown in FIG. 1, it can be seen that when a polydimethylsiloxane / polyglycerin-3 cross-linked polymer is used as the main emulsifier, an emulsion with a larger water drop is formed, and the sense of use of burst water is excellent. In contrast to this, it can be seen that when polydimethylsiloxane / PEG-10 / 15 cross-linked polymer is used as an emulsifier, small and uniform water droplets are formed and the sense of water burst is less.

The auxiliary emulsifier according to an embodiment of the present invention may include a branched-chain polymer connected by a hydrophilic bonding group, and may be selected from polyglycerin-3 disilaxane polydimethylsiloxane, polyglycerin-3 Any one or more of the groups consisting of polydimethyldisilaoxyethyl polydimethylsiloxane and lauryl polyglycerin-3 polydimethylsiloxyethyl polydimethylsiloxane, Preferably, it can be lauryl polyglycerin-3 polydimethylsiloxyethyl polydimethylsiloxane.

It is preferable to use 0.1 to 1% by weight of the auxiliary emulsifier, which is a branched chain polymer connected by a hydrophilic bonding group, in the entire composition. If the content is less than 0.1% by weight, the effect Very little, when used in excess of 1% by weight, the so-called "water burst" effect of the high internal phase cosmetic composition is reduced, and the auxiliary emulsifier itself also has emulsifying power, so the particles are small and uniform to be achieved The physical properties of "low viscosity" desired in the present invention are appropriately used within the above range.

The oil phase portion of the present invention may further include silicone oil.

The above-mentioned silicone oils can be used in ordinary water-in-silicone emulsified cosmetic compositions, including volatile oils and non-volatile oils. Dimethicone, trisiloxane, disilaxane, cyclopentasiloxane can be used Alkane, cyclohexasiloxane, methyl polytrimethylsiloxane, octyl polysiloxane, phenyl polytrimethylsiloxane, diphenyl polydimethylsiloxane, diphenylsiloxane Phenylphenyl polytrimethylsiloxane, polydimethylsiloxanol, etc., but not limited to this.

When mainly using non-volatile hydrocarbon oils or heavy ester oils with a lot of moisture, they will be thick and sticky. In contrast, volatile silicone oils quickly evaporate when the cosmetic composition is applied to the skin. And its use is very light and thin, which can provide the advantages of excellent applicability, ductility and other usability. In addition, it can provide safety, excellent water resistance and moisture shielding effect.

The above-mentioned silicone oil may be included with respect to the total weight of the composition from 10% by weight to 40% by weight, preferably from 25% by weight to 35% by weight. When the content of the above silicone oil is less than 10% by weight, the dosage form is unstable. When it exceeds 40% by weight, the amount of oil is too large to feel the unique water sensation of the high internal phase water-in-silicone dosage form. In the case of skin, it gives a sticky and slippery feeling of oil, a feeling of sulking, and a feeling of delayed skin absorption, so it is appropriately used within the above range.

The oil phase portion of the present invention may further include an ultraviolet blocking agent.

The ultraviolet blocker used in the cosmetic composition of the present invention is not particularly limited as long as it has been used in cosmetics. For example, glycerol PABA (Glyceryl PABA), cresol-triazole trisiloxane, cresol-triazole, digallate trioleate, phenyl dibenzimidazole tetrasulfonic acid disodium, DEA-methyl Oxycinnamate, a mixture of henna quinone and dihydroxyacetone, 4-methylbenzylidene camphor, menthyl anthranilate, benzophenone-3, benzophenone-4, diphenyl Methone-8, butylmethoxydibenzoylmethane, diethylhexyloxyphenol methoxyphenyl triazine, cinnoxyl, ethyl hydroxypropyl PABA, octocrylene, ethylhexyl dimethyl PABA , Ethylhexyl methoxycinnamate, ethylhexyl salicylate, ethylhexyl triazinone, isoamyl p-methoxycinnamate, TEA-salicylate, p-aminobenzoic acid (Para -Aminobenzoic Acid (PABA), phenylbenzimidazole sulfonic acid, humulide, diethylhexylbutyramide triazinone, methylene bis-benzotriazole tetramethylbutylphenol, p-phenylenedi Methylenedicamphorsulfonic acid and its salts, silicone-15, benzophenone-1, benzophenone-2, benzophenone-5, benzophenone-6, benzophenone -9, 3-benzylidene camphor, benzylidene camphorsulfonic acid, butyl-p-aminobenzoic acid, camphor benzalkonium ammonium methyl sulfate, diethylhexylbutyramide triazinone, diisopropyl Methyl cinnamate, diisopropyl ethyl cinnamate, ethylhexyl 2-dimethoxybenzylidene dioxoimidazolidinyl propionate, ethyl p-aminobenzoic acid, ferulic acid, glyceryl ethyl Hexanoate dimethoxycinnamate, isoamyl trimethoxycinnamate, trisiloxane, isopropyl methoxycinnamate, isopropylbenzyl salicylate, PEG-25 PABA, polypropylene Acylamine methylbenzylidene camphor, potassium phenylbenzimidazole sulfonate, sodium phenylbenzimidazole sulfonate, TEA-phenylbenzimidazole sulfonate, etc., which can be used alone or in combination of two or more use.

The content of the ultraviolet blocking agent is preferably 5 to 10% by weight relative to the total weight of the composition. When the content is less than 5% by weight, the ultraviolet blocking effect is very small. When it exceeds 10% by weight, the stability of the emulsion decreases and becomes sticky, etc., which adversely affects the feeling of use. The ultraviolet blocking effect is relatively It is also small and economical in terms of usage.

The oil phase portion of the present invention may further include a dispersant.

The dispersant used in the cosmetic composition of the present invention has the effect of improving the stability of the highly formed high internal phase particles and making the powder phase described below uniform, as long as it has been used in cosmetics, and is not particularly limited. .

For example, one selected from Polyhydroxystearic Acid, Acrylates / Ethylhexyl Acrylate / Polydimethylsiloxane Acrylate Copolymer (Acrylates / Ethylhexyl Acrylate / Dimethicone Methacrylate Copolymer) and Vinylpyrrole can be used Any one or more of Vinylpyrrolidone / Hexadecene Copolymer is preferably an acrylate / ethylhexyl acrylate / polydimethylsiloxane alkyl acrylate copolymer.

The content of the dispersant is preferably 1% to 5% by weight relative to the total weight of the composition, but it is not limited thereto.

Powder Department

An embodiment of the present invention may include 100% by weight of the entire cosmetic composition, including 1% to 20% by weight, preferably 5% to 15% by weight of the powder part.

When the powder part is less than 1% by weight, it is difficult to expect the desired cosmetic effect such as ultraviolet blocking function or concealing power. When it exceeds 20% by weight, there is a case where it does not disperse to the oil phase part or hinder the feeling of use The problem is therefore appropriately adjusted within the above range.

The powder of an embodiment of the present invention refers to an aggregate of solid substances having a particle size of 1 mm or less, and the powder that can be used in the present invention includes spreading pigments, white pigments, coloring pigments, and pearlescent pigments commonly used in the cosmetics field , Metal powder, organic powder, etc.

The powder component can be applied to the skin to provide functions such as hue (hue) expression, bright feeling, three-dimensional feeling, moisturizing effect, whitening improvement, anti-wrinkle, ultraviolet blocking, anti-aging and pearlescent feeling. Specifically, it suffices to be able to perform functions such as covering irregularities, covering wrinkles, long-lasting cosmetic film, and bright feeling.

Furthermore, in order to improve water resistance and dispersibility, raw materials coated with alkyl silane, silicon oxide, mica, etc. may also be used. For example, the powder used in the present invention preferably includes white pigments such as talc, mica, kaolin, sericite, calcium carbonate, alumina, magnesium carbonate anhydrous silicic acid, and barium sulfate, titanium dioxide, and zinc oxide. Pigments, red iron oxide, yellow iron oxide, black iron oxide, ultramarine, iron blue, chromium oxide, carbon black and other coloring pigments, polymethyl methacrylate, polyurethane, nylon-6 and nylon-12, etc. One or more of the group consisting of organic pigments and pearlescent pigments; selected from polydimethylsiloxane / vinyl polydimethylsiloxane cross-linked polymer, vinyl polydimethylsiloxane / polymethyl Siloxane-based silsesquioxane cross-linked polymer, polydimethylsiloxane / phenylvinyl polydimethylsiloxane cross-linked polymer, lauryl polydimethylsiloxane / vinyl One or more groups selected from silicone modified powders such as polydimethylsiloxane crosslinked polymers and methyl methacrylate crosslinked polymers; and any group selected from the group consisting of organic pigments and natural pigments More than one.

Water Department

An embodiment of the present invention may include 50% by weight to 80% by weight, preferably 60% by weight to 70% by weight of the water phase portion relative to the entire 100% by weight of the cosmetic composition.

When the content of the water phase part is less than 50% by weight, the unique use feeling of water droplet condensation cannot be obtained, and when it exceeds 80% by weight, the phenomenon that the emulsifier type cannot be prepared or the stability is very unstable occurs.

The aqueous phase portion of the present invention may contain solvents, stabilizers, foaming agents, fragrances, surfactants, purified water, humectants, ionic or non-ionic types known in the art as needed. Emulsion stabilizers, fillers, ion blocking agents, chelating agents, preservatives, vitamins, blocking agents, wetting agents, essential oils, dyes, pigments, fragrances, hydrophilic or lipophilic active agents, lipid vesicles or Auxiliaries commonly used in the field of cosmetics or dermatology for any other ingredients commonly used in cosmetics. The aforementioned auxiliary agent can be introduced in an amount commonly used in the field of cosmetics or dermatology. In order to increase the skin improvement effect, the cosmetic composition of the embodiment of the present invention may further contain a skin absorption promoting substance. At this time, other components other than the composition may be randomly selected and formulated according to the dosage form of other cosmetics, the purpose of use, and the like.

In the above, the solvent may be distilled water, preferably deionized distilled water, which can be used in such a way that it meets 55 to 75% by weight based on the total weight% (ie, 100% by weight).

In addition, as an embodiment of the present invention, the water phase portion may further include a moisturizing agent, and the moisturizing agent may be used without limitation as long as it can provide moisture to the skin or retain moisture and exhibit a moisturizing function. For example, vegetable oils, animal oils, and oils disclosed in Patent Publication No. 10-2014-0118504 can be used. In addition, the humectant may include a polyhydric alcohol, specifically, may include a group selected from the group consisting of butylene glycol, propanediol, dipropylene glycol, and pentylene glycol. More than one polyol. The above-mentioned moisturizing agent may include a polyhydric alcohol, or may include other moisturizing ingredients (oils, etc.) mixed with the polyhydric alcohol. In the case of using a polyhydric alcohol as a moisturizing agent, it can provide an excellent moisturizing effect such as a moisturizing feeling, and at the same time, it has good miscibility with the powder components included in the cosmetic composition and improves the stability of the formulation of the emulsion.

In addition, the high-internal-phase water-in-oil form low-viscosity cosmetic composition of the present invention may further contain a composition selected from the group consisting of glycerin, butylene glycol, 1,2-propanediol, dipropylene glycol, pentanediol, hexanediol, polyethylene glycol, and One or more polyhydric alcohols in the group consisting of sorbitol serves as a humectant. The above-mentioned humectant may be contained in the entire composition in a range of 0.1% by weight to 20.0% by weight, preferably 0.5% by weight to 10.0% by weight. When the content of the above-mentioned moisturizer is less than 0.1% by weight, satisfactory moisturizing staying power cannot be obtained, and when it exceeds 20% by weight, it feels sticky and sticky during use, so the feeling of use deteriorates .

In addition, in the above, the ion blocking agent is a kind of masking agent, which refers to a substance that plays a role in that it combines with metal ions in an aqueous solution to form a soluble salt, and the metal ions are not generated by other reagents. For precipitation, the ion blocking agent used in the present invention may be disodium edetate, tetrasodium edetate, disodium EDTA, etc., and is not limited thereto.

In addition, the above-mentioned preservative refers to a substance that functions to inhibit and reduce the growth of microorganisms in cosmetics, and to protect products from bacterial or microbial contamination when using cosmetics. The preservatives used in the present invention may be Benzoic acid, parabens, mixtures of methylchloroisothiazolinone, phenoxyethanol, DMDM hydantoin, and the like are not limited thereto.

Viscosity of high internal phase water-in-oil cosmetic composition

Recently, air-cushion cosmetics that contain cosmetics in sponges that are easy to make-up are popular because of their portability and lightness of use. In order for cosmetics to absorb moisture to such sponges smoothly, it is necessary to have physical properties with a viscosity of at least 25,000 cps.

Therefore, the cosmetic composition of the embodiment of the present invention as described above can exhibit physical properties of low viscosity using a main emulsifier including a cross-linked polymer connected by a hydrophilic bonding group.

Therefore, the viscosity of the cosmetic composition of the present invention may be 10,000 cps to 30,000 cps (centipoise), preferably 15,000 cps to 25,000 cps. When the viscosity is less than 10,000 cps, even if the impregnating materials such as the air cushion described below are applied, the composition will flow out, so it is difficult to ensure physical stability. When the viscosity is higher than 30,000 cps, the cosmetics cannot be carried on the sponge And other carriers, it is appropriately adjusted within the above range.

Cosmetics including low-viscosity cosmetic compositions in the form of high internal phase water-in-oil

In the above-mentioned cosmetics according to an embodiment of the present invention, the above-described high internal phase water-in-oil form low-viscosity cosmetic composition is supported on a carrier such as a sponge, thereby easily filling the cosmetic composition, and can uniformly support the cosmetic composition for a long time. When the cosmetic composition is taken, an appropriate amount of the cosmetic composition is discharged while maintaining excellent durability for a long time.

In addition, the cosmetics of the embodiments of the present invention may further include an applicator for picking up the cosmetic composition from a sponge carrier impregnated with the above-mentioned high internal phase water-in-oil low viscosity cosmetic composition. In addition, the cosmetics described above may further include a lower part that can hold the cosmetic composition carrier, a mirror, and the like, and may further include a container including an upper part of a lid, and a cosmetic container generally called powder, but is not limited thereto.

In the description of the present invention, "carrier" means any substance or component that can be enumerated as a composition, and can also be expressed as "support", "impregnation material", or "vehicle". In addition, the "carrier" may be a person for discharging the substance carried by it to another application tool. The composition carried on the above-mentioned carrier can be delivered to the skin by an application element (also called an application tool or applicator) such as a hand, puff, makeup stick, or brush.

In addition, in this specification, "foam carrier" is a material that can support any substance or component that can be enumerated as a composition. It is made of rubber, fiber, or resin like a sponge, which means that it can support and Discharges the cosmetic composition.

Specifically, the foam may be a natural foam or a synthetic foam, but is not particularly limited. The natural foam may include materials such as sponge and natural rubber, and the material of the synthetic foam may include Synthetic resin, polyurethane, latex, acrylonitrile-butadiene rubber (NBR), butadiene rubber (BR), styrene-butadiene rubber (SBR), natural rubber (NR) , Chloroprene rubber (CR), isoprene-isobutylene rubber (IIR), isoprene rubber (IR), vulcanized ethylene propylene rubber (EPR), polysulfide rubber (Polysulfide rubber), Silicone rubber, fluororubber, urethane rubber, acrylic rubber, Ethylene propylene diene monomer (EPDM), polyvinyl alcohol ( PVA), ethylene vinyl acetate (EVA) and nitrile rubber (Nitrile Rubber, NR), etc.

In the present invention, the polyurethane foam as one of the above foams may include polyether-based foamed urethane (based on an ether polyol-based substrate), polyester-based foam The urethane and polycarbonate-based foamed urethane may be specifically those including polyether-based foamed urethane, but are not particularly limited.

In addition, the polyether foaming urethane may include polyether dry foaming urethane and polyether wet foaming urethane, and the polyester foaming urethane The ester includes polyester-based dry foamed urethane and polyester-based wet foamed urethane. The polycarbonate-based foamed urethane includes polycarbonate-based dry foamed urethane Ester and polycarbonate wet foaming urethane.

Hereinafter, the present invention will be described in more detail by examples. Those with common knowledge in the industry should understand that these embodiments are only used to illustrate the present invention and are not to be construed as limiting the scope of the present invention to these embodiments.

Examples 1

The high-viscosity water-in-oil form low viscosity cosmetics of the present invention were prepared according to the raw materials and composition ratios described in Table 1 below. First, put the powder phase into the oil phase section including the main emulsifier and the auxiliary emulsifier at normal temperature, and use T.K HOMOMIXER MARK II (manufactured by TOKUSHU KIKA Co., Ltd.) as a homogenizer to stir at a high speed to uniformly disperse the powder phase. Thereafter, the moisturizing agent, ion blocking agent, emulsification stabilizer and preservative are dissolved in purified water as a solvent to prepare an aqueous phase portion, and the aqueous phase portion is put into the oil phase portion mixed with the powder phase, using the above The homogenizer stirs at a low speed to prepare high internal phase water-in-oil cosmetics.

According to the present invention, an example of a high-viscosity water-in-oil form low-viscosity cosmetic composition is shown in Table 1 below.

[Table 1]

Comparative example 1

Use polydimethylsiloxane / PEG-10 / 15 cross-linked polymer instead of polymethylsiloxane / polyglycerin-3 cross-linked polymer as the main emulsifier. Make up cosmetics with the same composition.

[Table 2]

Comparative example 2

A cosmetic composition was prepared according to the same composition as in Example 1 except that lauryl polyglycerin-3 polydimethylsiloxyethyl polydimethylsiloxane was not used as an auxiliary emulsifier.

[table 3]

Experimental Example 1 -Confirmation of the results of water droplet formation corresponding to the type of main emulsifier

The water droplet images of the cosmetics prepared according to the compositions of Example 1 and Comparative Example 1 described above were visually confirmed. Comparing polyglycerols (Example 1) as the main emulsifier with polydimethylsiloxane crosslinked polymers combined with polyethylene glycols (Comparative Example 1), the results show the following: Figure 1 , When using polyglycerol emulsifier, it forms an emulsion with larger water droplets, so that the use of burst water is excellent, and the viscosity is 20,000 cps to 25,000 cps, which is more than that when using polyethylene glycol emulsifier. The viscosity of 45,000 cps to 50,000 cps is more than half lower, so it is more suitable for high internal phase water-in-oil cosmetic compositions with low viscosity characteristics.

Experimental Example 2 -Confirmation of water droplet formation and dispersibility according to the content of the auxiliary emulsifier

In this Experimental Example 2, it was confirmed that the "lauryl polyglycerin-3 polydimethylsilyloxyethyl polydimethylsilicone" as an auxiliary emulsifier including a branched polymer connected by a hydrophilic bonding group The content of "oxane" (trade name KF-6105 of ShinEtsu Corporation in Japan) corresponds to the viscosity, the formation of water droplets, and the dispersibility of the cosmetic composition. The viscosity of the present invention was measured using a DV-2 + PRO viscometer from BROOKFIELD at 30 ° C under the conditions of # 4 spindle and 12 rpm. In addition, whether or not water droplets are formed is a phenomenon in which the cosmetic of the present invention is applied to the skin to confirm the condensation of the water droplets with the naked eye, and the dispersibility is also relatively evaluated with the naked eye to determine whether a pigment band of the cosmetic is formed.

[Table 4]

As shown in Table 4 above, it can be seen that the "lauryl polyglycerin-3 polydimethylsiloxyethyl polydimethylsiloxane" which includes polyglycerin branched polymers as auxiliary emulsifiers As the content increases, the dispersion of the powder phase increases. FIGS. 3A and 3B show a case where the auxiliary emulsifier is not used, that is, the difference in dispersibility between Comparative Example 2 and Experimental Example 1 using a 0.5% by weight auxiliary emulsifier. Comparative Example 2 has poor dispersibility and can be visually confirmed To produce a white band.

However, it can be seen that when the content of the auxiliary emulsifier exceeds 0.5% by weight, water droplets are not formed and the viscosity increases, which is therefore a content that is not suitable for the cosmetic of the present invention.

Experimental Example 3 -Confirmation of viscosity, moisture value and water droplet formation effect corresponding to each internal phase content

In this Experimental Example 3, it was confirmed whether the viscosity of the cosmetic composition corresponding to the purified water content of the water phase (internal phase) and the formation of water droplets. The content of the silicone oil 1 is reduced to adjust the content of the water phase portion and the oil phase portion in accordance with the degree of increase in the content of purified water in the water phase portion.

The viscosity of the present invention was measured under the same conditions as in Experimental Example 2 above, and the formation of water droplets was the same as in Experimental Example 2 in which the condensation of water droplets was visually confirmed.

Immediately after applying the cosmetics for adjusting the purified water content of the internal phase to the skin, the moisture value of the present invention was measured using the "skin tester" of Amore Corporation as a moisture measuring device.

[table 5]

As shown in Table 4 above, cosmetics containing 43% or less of purified water have a low moisture value and are not suitable for the cosmetics of the present invention. In the case of containing 48% of purified water, the moisture value is excellent, but as shown in FIG. 4A As shown in FIG. 4B, water droplets are not generated, which is not suitable. It can be seen that when the content of purified water is 53% or more, the moisture value and whether water droplets are generated are excellent, but when the purified water content of the internal phase is 58% or more, the viscosity greatly increases.

no

FIG. 1 is an image of an emulsion formed using polydimethylsiloxane / polyglycerin-3-crosslinked polymer as a crosslinked polymer connected by a hydrophilic bonding group as an emulsifier. FIG. 2 is an image of an emulsion formed using a polydimethylsiloxane / PEG-10 / 15 cross-linked polymer as a cross-linked polymer connected by a hydrophilic bonding group as an emulsifier. 3A and 3B are powders using lauryl polyglycerin-3 polydimethylsiloxyethyl polydimethylsiloxane as a branched polymer connected by a hydrophilic bonding group as an emulsifier The image of the result of improved dispersion. 4A and 4B are images showing whether water drops are formed according to the water content of the water phase.

Claims (13)

A low-viscosity cosmetic composition in the form of a high internal phase water-in-oil, including an aqueous phase part, an oil phase part and a powder part, wherein: the oil phase part includes silicone oil and an emulsifier having a hydrophilic bonding group, the emulsifier The agent includes a cross-linked polymer connected by a hydrophilic bonding group and a branched polymer connected by a hydrophilic bonding group. The high internal phase water-in-oil form low-viscosity cosmetic composition as described in item 1 of the patent application scope, wherein, relative to the overall 100% by weight of the composition, including: 50% to 80% by weight of the aqueous phase portion 10% to 40% by weight of the oil phase portion; and 1% to 20% by weight of the powder portion. The cosmetic composition of high internal phase water-in-oil form and low viscosity as described in item 1 of the scope of patent application, wherein the cross-linked polymer connected by a hydrophilic bonding group is selected from polydimethylsiloxane / Polyglycerin-3 cross-linked polymer, lauryl polydimethylsiloxane / polyglycerin-3 cross-linked polymer and polyglycerin-3 / lauryl polydimethylsiloxyethyl polydimethylsiloxane Any one or more of the groups composed of oxane crosslinked polymers. The high internal phase water-in-oil form low-viscosity cosmetic composition as described in item 1 of the patent application scope, wherein the branched-chain polymer connected by a hydrophilic bonding group is selected from polyglycerin-3 disiloxane Alkyl dimethicone, polyglycerin-3 polydimethyl disioxyethyl polydimethylsiloxane, and lauryl polyglycerin-3 polydimethylsiloxyethyl polydimethyl More than one of the ethnic groups composed of silicone. The high internal phase water-in-oil form low-viscosity cosmetic composition as described in item 1 of the patent application scope, wherein, relative to the total weight of the composition, 1% to 10% by weight of the hydrophilic bonding group is included Connected cross-linked polymers. The high internal phase water-in-oil form low-viscosity cosmetic composition as described in item 1 of the patent application scope, wherein, relative to the total weight of the composition, 0.1% to 1% by weight of the hydrophilic bonding group Linked branched polymer. The high internal phase water-in-oil form low-viscosity cosmetic composition as described in item 1 of the patent application scope, wherein the silicone oil is selected from the group consisting of polydimethylsiloxane, trisiloxane, disilaxane, Pentasiloxane, cyclohexasiloxane, methyl polytrimethylsiloxane, octyl polysiloxane, phenyl polytrimethylsiloxane, diphenyl polydimethylsiloxane, diphenyl Any one or more of the group consisting of trisiloxyphenyl polytrimethylsiloxane and polydimethylsiloxanol. The high internal phase water-in-oil form low-viscosity cosmetic composition as described in item 1 of the patent application scope, wherein the silicone oil is included in an amount of 10% to 40% by weight relative to the total weight of the composition. The high internal phase water-in-oil form low-viscosity cosmetic composition as described in item 1 of the scope of the patent application, wherein the aqueous phase portion includes selected from the group consisting of purified water, humectants, ion blocking agents, emulsion stabilizers, preservatives And any one of the ethnic groups composed of spices. The high internal phase water-in-oil form low-viscosity cosmetic composition as described in item 1 of the patent application scope, wherein the powder part comprises a cross-linked polymer selected from titanium dioxide, zinc oxide, talc, iron oxide, methyl methacrylate Any one or more of the group consisting of substances, mica, kaolin, sericite, alumina, barium sulfate, polymethyl methacrylate, organic pigments and natural pigments. The low-viscosity cosmetic composition in the form of a high internal phase water-in-oil as described in item 1 of the scope of the patent application, wherein the viscosity of the cosmetic composition is 10,000 cps to 30,000 cps. A cosmetic product, comprising: a high-viscosity water-in-oil form low-viscosity cosmetic composition as described in any one of claims 1 to 11; and a carrier to impregnate the cosmetic composition. The cosmetics as described in item 12 of the patent application scope further include: an application tool that picks up the cosmetic composition from the carrier impregnated with the cosmetic composition of the high internal phase water-in-oil form and low viscosity.