KR102453365B1 - High internal phase water-in-oil type emulsified cosmetic composition - Google Patents

Abstract

The present invention relates to a high-resistance water-in-oil cosmetic composition, and more particularly, by using an emulsifier comprising a cross-linked polymer linked with a hydrophilic linkage and a branched polymer linked with a hydrophilic linker to facilitate impregnation into a carrier with low-viscosity properties. It relates to a cosmetic composition capable of maximizing a feeling of moisture while having a high moisture content, which is an aqueous phase part.

Description

High resistance water-in-oil cosmetic composition {HIGH INTERNAL PHASE WATER-IN-OIL TYPE EMULSIFIED COSMETIC COMPOSITION}

The present invention relates to a high internal phase water-in-oil cosmetic composition, and more particularly, to a low-viscosity, high-quality cosmetic composition comprising an emulsifier comprising a cross-linked polymer linked by a hydrophilic linking group and a branched polymer linked by a hydrophilic linking group, and to be easily impregnated into a carrier. It relates to a water-in-oil cosmetic composition.

In general, when emulsions are used in cosmetics, pharmaceuticals, and foods, they are divided into two types, one of which is an oil in water type (O/W) emulsion in which oil is dispersed in water in the form of small particles. and the other is a water in oil type (W/O) emulsion in which water is dispersed in oil.

Among them, in cosmetics used for the purpose of skin protection, etc., the water-in-oil cosmetic composition forms a strong oil film on the skin compared to the oil-in-water cosmetic composition to suppress evaporation of moisture from the skin, and continuously provides moisture and skin active substances for a long time. By delivering it, the skin protection effect is excellent. In addition, the water-in-oil cosmetic composition has superior water resistance compared to the water-in-water type, so its application range includes sunscreen products to protect the skin from UV rays in summer, baby creams to prevent diaper rash in infants, and hand creams to prevent excessive sebum loss. is very wide

However, the water-in-oil type emulsified cosmetic composition has many advantages in terms of water resistance, continuity of makeup, and skin protection effect because the trauma is oil, but has a heavy feeling of use, and has a thicker cosmetic film compared to oil-in-water emulsified cosmetic composition, and thus has poor skin permeability. The disadvantage of blocking breathing and damaging the skin has been raised. In addition, it has disadvantages in terms of economical aspects such as poor emulsion stability, high manufacturing cost or difficult manufacturing.

In general, in an emulsion, when the internal phase volume ratio exceeds 74%, the droplet does not maintain a spherical shape but becomes a polyhedron. The action of the droplets is limited in the case of this physical structure, and as a result, the emulsion exhibits a creamy appearance with high viscosity. Such emulsions are called high internal phase emulsions. The high inner phase emulsification is useful as a formulation for cosmetics and pharmaceuticals because various substances can be dissolved in a large inner phase.

However, the conventional high internal phase emulsification is not suitable for a supported formulation that absorbs moisture into a sponge, etc., which has recently been spotlighted, as it exhibits a creamy form with high viscosity. In addition, in order to prepare a high internal phase emulsion, a method of making an emulsion while slowly adding a large amount of an aqueous phase to a small amount of an oil phase may be used, which consumes a lot of time and effort.

In order to solve this problem, Korean Patent Registration No. 10-1428474 discloses a method of dividing the emulsification process into two steps to prepare a water-in-oil type emulsified cosmetic composition with a high internal phase. When the emulsion composition is prepared by the above method, there is an advantage in that time and effort in the manufacturing process can be reduced, but there is a problem in that the prepared high internal phase emulsion composition does not have a low viscosity enough to be supported on a sponge or the like.

Korean Patent Laid-Open Patent No. 2017-0027666, "High resistance to water-in-oil cosmetic composition" Republic of Korea Patent Publication No. 2015-0022617, "Cosmetic composition of high-resistance silicone heavy water (W/S) formulation with excellent stability"

Accordingly, the present inventors have found that while preparing a high-intensity water-in-oil cosmetic composition for high moisture content in order to solve the above problems, when a specific emulsifier is used, the cosmetic composition exhibits low viscosity characteristics so that it can be impregnated with a sponge, etc. The invention was completed.

Accordingly, an object of the present invention is to provide a water-in-oil type low-viscosity cosmetic composition comprising a water phase part, an oil phase part, and a powder part, wherein the oil phase part includes a silicone oil and an emulsifier having a hydrophilic bonding group, and the emulsifier is a crosslinking type connected by a hydrophilic bonding group. polymer; And to provide a high internal phase water-in-oil type low-viscosity cosmetic composition comprising a branched polymer linked by a hydrophilic bonding group.

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

In order to achieve the above object, the present invention

In the high internal phase water-in-oil type low-viscosity cosmetic composition comprising an aqueous phase part, an oil phase part and a powder part,

The oil phase includes silicone oil and an emulsifier having a hydrophilic bonding group,

The emulsifier is a cross-linked polymer linked to a hydrophilic linkage; and

There is provided a high internal phase water-in-oil type low-viscosity cosmetic composition comprising a branched polymer linked by a hydrophilic bonding group.

In one embodiment of the present invention,

The composition is based on 100% by weight of the total

50 to 80% by weight of the water phase;

10 to 40% by weight of the oil phase; and

It will contain 1 to 20% by weight of the powder part.

In one embodiment of the present invention, the cross-linked polymer linked to the hydrophilic bonding group is dimethicone/polyglyceryl-3 crosspolymer, lauryl dimethicone/polyglycerin-3 crosspolymer, and polyglyceryl-3/lauryl poly It is at least one selected from the group consisting of dimethylsiloxyethyldimethicone crosspolymer.

In one embodiment of the present invention, the branched polymer linked with the hydrophilic bonding group is polyglyceryl-3 disiloxane dimethicone, polyglyceryl-3 polydimethyldisiloxyethyl dimethicone, and laurylpolyglyceryl-3 poly It is at least one selected from the group consisting of dimethylsiloxyethyldimethicone.

In one embodiment of the present invention, the cross-linked polymer linked with the hydrophilic bonding group is characterized in that it is included in an amount of 1 to 10% by weight based on the total weight of the composition.

In one embodiment of the present invention, the branched polymer linked with the hydrophilic bonding group is characterized in that it is included in an amount of 0.1 to 1 wt% based on the total weight of the composition.

In one embodiment of the present invention, the silicone oil is dimethicone, trisiloxane, disiloxane, cyclopentasiloxane, cyclohexasiloxane, methyltrimethicone, caprylyl methicone, phenyltrimethicone, diphenyldimethicone, It is characterized in that at least one selected from the group consisting of diphenylsiloxyphenyltrimethicone and dimethiconol.

In one embodiment of the present invention, the silicone oil is characterized in that it is included in an amount of 10 to 40% by weight based on the total weight of the composition.

In one embodiment of the present invention, the aqueous phase part is characterized in that it comprises at least one selected from the group consisting of purified water, a moisturizing agent, an ion sequestrant, an emulsion stabilizer, a preservative and a fragrance.

In one embodiment of the present invention, the powder part titanium dioxide, zinc oxide, talc, iron oxide, methyl methacrylate cross polymer, mica, kaolin, sericite, alumina, barium sulfate, polymethyl methacrylate, organic pigment And it will include any one or more selected from the group consisting of natural pigments.

In one embodiment of the present invention, the cosmetic composition is characterized in that the viscosity is 10,000 to 30,000 cps (centipoise).

In addition, the present invention provides a water-in-oil type low-viscosity cosmetic composition for the high internal phase in order to achieve the above object; and

a carrier impregnated with the cosmetic composition;

It provides cosmetics comprising a.

In one embodiment of the present invention, the cosmetic is to further include an applicator for taking the cosmetic composition from a carrier impregnated with a high internal phase, water-in-oil type, low-viscosity cosmetic composition.

The high-resistance water-in-oil type low-viscosity cosmetic composition according to the present invention uses an emulsifier comprising a cross-linked polymer linked by a hydrophilic linking group and a branched polymer linked by a hydrophilic linking group to be impregnated into a carrier while having low-viscosity physical properties. It has the advantage of maximizing moisture feeling due to its high internal wound content.

1 is an image of an emulsion formed using dimethicone/polyglycerin-3-crosspolymer, which is a cross-linked polymer linked with a hydrophilic linkage as an emulsifier.
2 is an image of an emulsion formed using dimethicone/PEG-10/15 cross-polymer, which is a cross-linked polymer connected with a hydrophilic linker as an emulsifier.
3 is an image showing the result of improved dispersibility of the powder using lauryl polyglyceryl-3 polydimethylsiloxyethyl dimethicone, which is a branched polymer connected with a hydrophilic bonding group as an emulsifier.
4 is an image showing whether water drops are formed according to the moisture content of the water phase.

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

The terms or words used in the present specification and claims should not be construed as being limited to their ordinary or dictionary meanings, and the inventor may properly define the concept of the term in order to best describe his invention. Based on the principle that there is, it should be 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. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present invention, terms such as 'include' or 'have' designate the existence of features, numbers, steps, operations, components, parts, or a combination thereof described in the specification, but one or more other It is to be understood that this does not preclude the possibility of addition or presence of features or numbers, steps, operations, components, parts, or combinations thereof.

The present invention provides a high-resistance water-in-oil cosmetic composition having low-viscosity physical properties by using an emulsifier comprising a cross-linked polymer linked by a hydrophilic linking group and a branched polymer linked by a hydrophilic linking group.

The water-in-oil cosmetic composition of the high internal phase is usually 60 to 90% of the water-in-oil type emulsion, and forms a large ratio of the internal phase and increases the size of the emulsified particles. It has the property of being united as the components come out. It is also called a 'water burst' formulation because it looks like water droplets bursting out and forming with the naked eye, and it is a formulation that can increase psychological and aesthetic satisfaction for users.

In the present invention, 'high internal injury' refers to a case in which the moisture value measured after applying the cosmetic according to the present invention to the skin is sufficiently high and water drops can be formed.

Another object of the present invention is to provide a cosmetic composition that can be impregnated with a sponge or the like by stabilizing it by including a powder phase in the inner phase of the water-in-oil cosmetic composition and exhibiting low-viscosity properties.

However, from this, it is not meant to limit the cosmetic composition of the present invention only to a specific range, and the cosmetic composition of the specific range should be understood as an implementation means for carrying out the present invention more broadly.

The present invention provides a water-in-oil type low-viscosity cosmetic composition comprising a water phase part, an oil phase part and a powder part, wherein the oil phase part comprises a silicone oil and an emulsifier having a hydrophilic bonding group, and the emulsifier is a cross-linked polymer connected by a hydrophilic bonding group; and a branched polymer linked by a hydrophilic linkage group.

In addition, the cosmetic composition according to an embodiment of the present invention is not particularly limited in composition content, but the composition comprises 50 to 80% by weight of the aqueous phase with respect to 100% by weight of the total; 10 to 40% by weight of the oil phase; And 1 to 20% by weight of the powder portion may be a high internal phase water-in-oil type low viscosity cosmetic composition comprising.

Hereinafter, each key configuration exemplified in the manufacture of the present invention will be described in more detail.

paid part

An embodiment according to the present invention may include 10 to 40% by weight of the oil phase with respect to 100% by weight of the total cosmetic composition, preferably 25 to 35% by weight.

In addition, the oil phase according to the present invention may include a silicone oil and an emulsifier, and the emulsifier may include 3 to 10% by weight based on the total weight of the cosmetic composition. If the content of the emulsifier is less than 3% by weight, it is not possible to prepare a composition having excellent stability, and if it is more than 10% by weight, there is a problem of inhibiting the feeling of use of the cosmetic, so that it is appropriately adjusted within the above range.

The emulsifier according to the present invention may include a main emulsifier comprising a crosslinked polymer linked by a hydrophilic linkage and an auxiliary emulsifier comprising a branched polymer linked by a hydrophilic linkage.

In the case of the existing water-in-oil cosmetic composition, the emulsifier containing the cross-linked and branched polymers was used without distinction, but in the present invention, the main emulsifier is a cross-linked polymer connected with a hydrophilic linkage as the main emulsifier. By using it, it is possible to produce a cosmetic composition exhibiting physical properties of a low viscosity while making the cosmetic droplet of the high water-resistant phase more stable.

Therefore, an embodiment according to the present invention is a dimethicone/polyglyceryl-3 crosspolymer, lauryl dimethicone/polyglycerin-3 crosspolymer, and polyglyceryl-3 as a main emulsifier comprising a cross-linked polymer linked with a hydrophilic linkage group. It may be at least one selected from the group consisting of /lauryl polydimethylsiloxyethyldimethicone crosspolymer, preferably dimethicone/polyglyceryl-3 crosspolymer.

The cross-linked polymer linked to the hydrophilic bonding group included in the main emulsifier is preferably contained in an amount of 1 to 10% by weight in the total composition, and if the content is less than 1% by weight, the particles are not stable, and the content is 10% by weight If used in excess, the hardness may increase and the feeling of use may become stiff and wet, so it is appropriately used within the above range.

In principle, in the case of the high internal phase type, the particle itself exhibits swelling properties, so its movement is reduced, indicating high viscosity properties. However, in the case of dimethicone/polyglyceryl-3 crosspolymer, which is a main emulsifier including a crosslinked polymer linked with a hydrophilic linker, as an embodiment according to the present invention, unlike dimethicone/PEG-10/15 crosspolymer, etc., the hydrophilic linkage group Since phosphorus polyglyceryl is bulky compared to polyethylene glycol, it forms large and non-uniform droplets through unstable emulsification when used as an emulsifier. Therefore, the particles are not uniform, and the stability is reduced, and the physical properties of low viscosity are exhibited.

As can be seen from FIG. 1 , when dimethicone/polyglycerin-3 crosspolymer is used as the main emulsifier as the main emulsifier, a larger water drop emulsion is formed, and it can be seen that the water-popping feeling is excellent. On the other hand, when dimethicone/PEG-10/15 crosspolymer is used as an emulsifier, small and uniform water drops are formed, and it can be seen that there is little feeling of water bursting.

The auxiliary emulsifier according to an embodiment of the present invention may include a branched polymer linked by a hydrophilic linkage group, polyglyceryl-3 disiloxane dimethicone, polyglyceryl-3 polydimethyldisiloxyethyl dimethicone, and It may be at least one selected from the group consisting of lauryl polyglyceryl-3 polydimethylsiloxyethyl dimethicone, and preferably lauryl polyglyceryl-3 polydimethylsiloxyethyl dimethicone.

The branched polymer linked to the hydrophilic bonding group included in the auxiliary emulsifier is preferably used in an amount of 0.1 to 1% by weight in the total composition, and if the content is less than 0.1% by weight, the effect is insignificant, and exceeding 1% by weight When used, the so-called 'water-breaking' effect of the cosmetic composition with high resistance is reduced, and the auxiliary emulsifier itself also has emulsifying power, so that the particles are small and uniform, so that the physical properties of 'low viscosity' desired in the present invention cannot be realized in the above range. Use it appropriately.

The oil phase according to the present invention may additionally include silicone oil.

The silicone oil can be used in a conventional water-in-silicone emulsified cosmetic composition, and includes both volatile and non-volatile oils, dimethicone, trisiloxane, disiloxane, cyclopentasiloxane, cyclohexasiloxane, methyltrimethicone, Caprylyl methicone, phenyltrimethicone, diphenyldimethicone, diphenylsiloxyphenyltrimethicone and dimethiconol may be used, but is not limited thereto.

Non-volatile hydrocarbon oil with a lot of oiliness or heavy ester oil can be heavy and sticky when mainly used, whereas volatile silicone oil volatilizes quickly when the cosmetic composition is applied to the skin, so the feeling of use is very light, excellent spreadability, Advantages of usability such as spreadability may be provided. In addition, it can provide safety, excellent water resistance and moisturizing shielding effect.

The silicone oil may be included in an amount of 10 to 40% by weight, preferably 25 to 35% by weight, based on the total weight of the composition. When the content of the silicone oil is less than 10% by weight, the formulation is not stable, and when it exceeds 40% by weight, the amount of oil is too large, so that water tearing characteristic of water formulations among high-resistance silicone is not felt and when applied to the skin It can give a feeling of slippery use of oil, stuffiness, and delayed skin absorption, so use it appropriately within the above range.

The oil phase according to the present invention may additionally include a sunscreen.

The sunscreen used for the cosmetic composition of the present invention may be one that has been conventionally used for cosmetics, and is not particularly limited. For example, glyceryl PABA, dromethrizoletrisiloxane, dromethrazole, digalloyltrioleate, disodiumphenyldibenzimidazoletetracellonate, DA-methoxycinnamate, Lawson and dihydroxyacetone, 4-methylbenzylidene camphor, menthylanthranilate, benzophenone-3, benzophenone-4, benzophenone-8, butylmethoxydibenzoylmethane, bisethylhexyloxyphenolmethoxyphenyltri Azine, cinoxate, ethyldihydroxypropylfaba, octocrylene, ethylhexyldimethylfaba, ethylhexylmethoxycinnamate, ethylhexylsalicylate, ethylhexyltriazone, isoamyl p-methoxycinnamate, TEA -Salicylate, para-aminobenzoic acid (PABA), phenylbenzimidazolesulfonic acid, homosalate, diethylhexylbutamidotriazone, methylenebis-benzotriazolyltetramethylbutylphenol, terephthalyl Dendycamphor sulfonic acid and its salts, polysilicone-15, benzophenone-1, benzophenone-2, benzophenone-5, benzophenone-6, benzophenone-9, 3-benzylidene camphor, benzylidene camphor sulfonic acid , Butylparaaminobenzoic acid, camphor benzelkonium methocelate, diethylhexyl butamidotriazone, diisopropyl methylcinnamate, ethyldiisopropyl cinnamate, 2-ethylhexyldimethoxybenzylidinedioxoimidazolidinepro Cypionate, ethylparaaminobenzoic acid, ferulic acid, glyceryl ethylhexanoate dimethoxycinnamate, isopentyltrimethoxycinnamate trisiloxane, isopropylmethoxycinnamate, isopropylbenzylsalicylate, PEG-25 Fava, polyacrylamidomethyl benzylidene camphor, potassium phenylbenzimidazole sulfonate, sodium phenylbenzimidazole sulfonate and TEA-phenylbenzimidazole sulfonate may be used, and these may be used alone or in combination of two or more. Can be used.

The content of the sunscreen is preferably 5 to 10% by weight based on the total weight of the composition. If the content is less than 5% by weight, the UV blocking effect is insignificant, and if it exceeds 10% by weight, the stability of the emulsion is lowered and the feeling of use such as stickiness is adversely affected. to be.

The oil phase according to the present invention may additionally include a dispersing agent.

The dispersing agent used in the cosmetic composition of the present invention improves the stability of the largely formed high internal phase particles and has a role of leveling the powder phase, which will be described later, and is not particularly limited as long as it has been conventionally used in cosmetics.

For example, Polyhydroxystearic Acid, Acrylates/Ethylhexyl Acrylate/Dimethicone Methacrylate Copolymer and Vinylpyrrolidone/Hexadecene Copolymer /Hexadecene Copolymer) may be used, and preferably acrylate/ethylhexyl acrylate/dimethicone methacrylate copolymer may be used.

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

powder part

An embodiment according to the present invention may include 1 to 20% by weight of the powder with respect to 100% by weight of the total cosmetic composition, preferably 5 to 15% by weight.

If the powder portion is less than 1% by weight, it is difficult to expect a makeup effect such as a desired UV blocking function or coverage, and if it exceeds 20% by weight, there is a problem that it is not dispersed in the oil phase or the feeling of use is impaired. Adjust.

The powder according to an embodiment of the present invention means an aggregate of solid materials having a particle size of 1 mm or less, and the powder usable in the present invention is an extender pigment, a white pigment, a colored pigment, and a pearl luster commonly used in the cosmetic field. pigments, metal powders, organic powders, and the like.

The powder component may be applied to the skin and have functions such as color (tone) expression, brightness, three-dimensional effect, moisturizing effect, whitening improvement, anti-wrinkle, UV protection, anti-aging and pearl effect. Specifically, it is good if it can have functions such as uneven cover, wrinkle cover, makeup film lasting, and brightening.

Further, in order to increase water resistance and dispersibility, a raw material coated with alkylsilane, silica, mica, etc. may be used. For example, the powder used in the present invention may include, for example, extender pigments such as talc, mica, kaolin, sericite, calcium carbonate, alumina, magnesium carbonate, silicic anhydride and barium sulfate; white pigments such as titanium dioxide and zinc oxide; colored pigments such as red iron oxide, yellow iron oxide, black iron oxide, ultramarine blue, royal blue, chromium oxide and carbon black; organic pigments such as polymethyl methacrylate, polyurethane, nylon-6 and nylon-12; and at least one selected from the group consisting of pearlescent pigments and dimethicone/vinyldimethicone crosspolymer, vinyldimethicone/methiconesilsesquioxane crosspolymer, dimethicone/phenylvinyldimethicone crosspolymer; It is preferable to include at least one selected from the group consisting of silicone-modified powders such as lauryl dimethicone/vinyl dimethicone cross polymer and methyl methacrylate cross polymer, and at least one selected from the group consisting of organic and natural pigments. .

Prime Minister

An embodiment of the present invention may include 50 to 80% by weight of the aqueous phase with respect to 100% by weight of the total cosmetic composition, preferably 60 to 70% by weight.

If the content of the aqueous phase is less than 50% by weight, it is impossible to have a unique feeling of using water droplets, and if it is more than 80% by weight, an emulsifying formulation is not made or the stability is very unstable.

In the water phase according to the present invention, if necessary, solvents, stabilizers, foaming agents, fragrances, surfactants, purified water, humectants, ionic or non-ionic emulsion stabilizers, fillers, and ion sequestrants known in the art , chelating agents, preservatives, vitamins, blockers, humectants, essential oils, dyes, pigments, fragrances, hydrophilic or lipophilic actives, lipid vesicles or any other ingredient commonly used in cosmetics, common in the field of cosmetology or dermatology. It may contain adjuvants used as The adjuvant is introduced in an amount generally used in the field of cosmetology or dermatology. Cosmetic compositions according to embodiments of the present invention may further contain a skin absorption promoting material to increase the skin improvement effect. In this case, in addition to the composition, other ingredients may be arbitrarily selected and blended according to the formulation or purpose of use of other cosmetics.

In the above, the solvent may be distilled water, preferably deionized distilled water is used, and may be used to satisfy 55 to 75 wt% based on 100 wt% of the total weight.

In addition, as an embodiment of the present invention, the water receiving part may further include a moisturizing agent, and the moisturizing agent may be used without limitation as long as it has a moisturizing function of supplying or maintaining moisture to the skin. For example, vegetable oils, animal oils and oils such as Patent Publication No. 10-2014-0118504 can be used. In addition, the moisturizer may include a polyol, specifically butylene glycol, propanediol, dipropylene glycol, pentylene glycol, etc. It may include one or more polyols selected from the group. The humectant may be composed of a polyol or may be composed of a mixture of a polyol with other moisturizing ingredients (oils, etc.). When a polyol is used as a moisturizer, it provides excellent moisturizing effects such as moisturization, and at the same time has good compatibility with the powder component included in the cosmetic composition, thereby improving formulation stability of the emulsion.

In addition, the water-in-oil type low-viscosity cosmetic composition according to the present invention is a moisturizing agent and at least one polyol selected from the group consisting of glycerin, butylene glycol, propylene glycol, dipropylene glycol, pentylene glycol, hexylene glycol, polyethylene glycol and sorbitol. may contain more. The humectant may be contained in an amount of 0.1 to 20.0% by weight, preferably 0.5 to 10.0% by weight, in the total composition. When the content of the moisturizer is less than 0.1% by weight, a satisfactory moisturizing lasting power cannot be obtained, and when it exceeds 20% by weight, the feeling of use deteriorates due to a sticky and suffocating feeling when used.

In addition, in the above, the ion sequestrant is a kind of masking agent, which binds to a metal ion in an aqueous solution to form a soluble complex salt, and refers to a substance that exhibits the action of preventing the metal ion from causing precipitation by other reagents, in the present invention The sequestering agent that can be used may include, but is not limited to, ethylenediaminetetraacetic acid disodium, ethylenediaminetetraacetic acid tetrasodium, disodium EDTA, and the like.

In addition, the preservative refers to a substance that inhibits and reduces the growth of microorganisms in cosmetics to protect the product from bacterial or microbial contamination when using cosmetics. It may be a mixture of jolinone, phenoxyethanol, DMDMhydantoin, etc., but is not limited thereto.

high inner wound water-in-oil type cosmetics viscosity of the composition

Recently, cushion cosmetics in which cosmetics are loaded on sponges that are easy to carry and light in use are gaining popularity. In order for the cosmetic to be smoothly absorbed into the sponge, it must have at least a viscosity of 25,000 cps or less.

Accordingly, the cosmetic composition according to the embodiment of the present invention described above may exhibit low-viscosity physical properties by using a main emulsifier including a cross-linked polymer linked with a hydrophilic bonding group.

Therefore, the cosmetic composition according to the present invention may have a viscosity of 10,000 to 30,000 cps (centipoise), preferably 15,000 to 25,000 cps. If the viscosity is lower than 10,000 cps, the composition may flow out even if an impregnating agent such as an air cushion, which will be described later, is applied, making it difficult to secure physical stability. Since it is not possible, it is appropriately adjusted within the above range.

high inner wound water-in-oil type low viscosity cosmetics Cosmetics comprising the composition

In the cosmetic according to an embodiment of the present invention, the cosmetic composition is well filled and the cosmetic composition can be uniformly supported for a long period of time by supporting the high internal phase water-in-oil type low-viscosity cosmetic composition on a carrier such as a sponge. When taken, an appropriate amount of the cosmetic composition is discharged, and excellent durability can be maintained for a long period of time.

In addition, the cosmetic according to the embodiment of the present invention may further include an applicator for taking the cosmetic composition from the sponge carrier impregnated with the high internal phase, water-in-oil type, low-viscosity cosmetic composition. In addition, the cosmetic may further include a lower portion and a mirror capable of accommodating the cosmetic composition carrier, and may further include a container including an upper portion of the lid, generally a cosmetic container called pact, but limited thereto it's not going to be

In the context of the present invention, "carrier" means that it can support any material or component exemplified by the composition, and may also be expressed as "carrier", "impregnating material" or "carrier". In addition, the "carrier" may be used to discharge the material supported thereon to a separate applicator. The composition supported on the carrier may be delivered to the skin through, for example, an application means such as a hand, a puff, a tip, or a brush (also referred to as an applicator or an applicator).

In addition, in the present specification, "foam carrier" is a material that can support any material or component, for example, a composition, made of rubber, fiber or resin like a sponge, which can support and discharge the cosmetic composition. means that

Specifically, the foam is not particularly limited, but may be a natural foam or a synthetic foam, and the natural foam may be made of, for example, a material such as sponge or natural rubber, and the material of the synthetic foam is Synthetic resin, polyurethane, latex, acrylonitrile-butadiene rubber (NBR), butadiene rubber (BR), styrene-butadiene rubber (SBR), NR (Natural Rubber), chloroprene rubber (CR), butyl rubber (isoprene-isobutylene rubber) :IIR), isoprene rubber (IR), vulcanized ethylene-propylene rubber (EPR), polysulfide rubber, silicone rubber, fluororubber, urethane rubber, acrylic rubber (Acrylic rubber), EPDM (Ethylene propylene diene monomer) rubber, polyvinyl alcohol (PVA) and ethylene vinyl acetate (EVA), NR (Nitrile Rubber), etc. may be included.

In the present invention, the polyurethane foam, which is a type of the foam, is not particularly limited, but includes a polyether-based foamed urethane (with an ether polyol as the main base), a polyester-based foamed urethane, and a polycarbonate-based foamed urethane. and may specifically include polyether-based foamed urethane.

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

Hereinafter, the present invention will be described in more detail through examples. These examples are only for illustrating the present invention, and it will be apparent to those of ordinary skill in the art that the scope of the present invention is not to be construed as being limited by these examples.

Example One

A high-resistance water-in-oil type low-viscosity cosmetic according to the present invention was prepared with the raw materials and composition ratios shown in Table 1 below. First, the powder phase was put into the oil phase containing the main emulsifier and the auxiliary emulsifier at room temperature and stirred at high speed using T.K HOMOMIXER MARK II (manufactured by TOKUSHU KIKA) as a homomixer to evenly disperse the powder phase. Thereafter, a moisturizing agent, a sequestering agent, an emulsion stabilizer, and a preservative were dissolved in purified water as a solvent to prepare an aqueous phase, which was placed in the oil phase in which the powder phase was mixed, and stirred at low speed using the homomixer to prepare a high internal phase water-in-oil cosmetic. .

An example of a water-in-oil type low-viscosity cosmetic composition with high internal phase according to the present invention is presented in Table 1 below.

division function Raw material name Example 1 paid emollient
(Silicone Oil 1) Cyclopentasiloxane, Cyclohexasiloxane remaining amount emollient
(Silicone Oil 2) Phenyltrimethicone 7 sunscreen Ethylhexylmethoxycinnamate 7 main emulsifier Dimethicone/polyglycerin-3 cross polymer 5 auxiliary emulsifier Lauryl polyglyceryl-3 polydimethylsiloxyethyl dimethicone 0.5 dispersant Acrylate/ethylhexyl acrylate/dimethicone methacrylate copolymer 5 powder coloring agent Titanium dioxide / zinc oxide / iron oxide / methyl methacrylate cross polymer 10 Awards solvent Purified water 58 moisturizer glycerin 5 sequestering agent Disodium EDTA 0.05 emulsion stabilizer sodium chloride 0.8 preservative Phenoxyethanol 0.3

comparative example One

A cosmetic was prepared using the same composition as in Example 1 except that dimethicone/PEG-10/15 crosspolymer was used instead of methicone/polyglycerin-3 crosspolymer as the main emulsifier.

division function Raw material name Comparative Example 1 paid emollient
(Silicone Oil 1) Cyclopentasiloxane/Cyclohexasiloxane remaining amount emollient
(Silicone Oil 2) Phenyltrimethicone 7 sunscreen Ethylhexylmethoxycinnamate 7 main emulsifier dimethicone /PG-10/ 15Crosspolymer 5 auxiliary emulsifier Lauryl polyglyceryl-3 polydimethylsiloxyethyl dimethicone 0.5 dispersant Acrylate/ethylhexyl acrylate/dimethicone methacrylate copolymer 5 powder coloring agent Titanium dioxide / zinc oxide / iron oxide / methyl methacrylate cross polymer 10 Awards solvent Purified water 58 moisturizer glycerin 5 sequestering agent Disodium EDTA 0.05 emulsion stabilizer sodium chloride 0.8 preservative Phenoxyethanol 0.3

comparative example 2

A cosmetic was prepared in the same composition as in Example 1, except that lauryl polyglyceryl-3 polydimethylsiloxyethyl dimethicone was not used as an auxiliary emulsifier.

division function Raw material name Comparative Example 2 paid emollient
(Silicone Oil 1) Cyclopentasiloxane/Cyclohexasiloxane remaining amount emollient
(Silicone Oil 2) Phenyltrimethicone 7 sunscreen Ethylhexylmethoxycinnamate 7 main emulsifier Dimethicone/polyglycerin-3 cross polymer 5 auxiliary emulsifier Lauryl Polyglyceryl - 3-polydimethylsiloxyethyldimethicone 0 dispersant Acrylate/ethylhexyl acrylate/dimethicone methacrylate copolymer 5 powder coloring agent Titanium dioxide / zinc oxide / iron oxide / methyl methacrylate cross polymer 10 Awards solvent Purified water 58 moisturizer glycerin 5 sequestering agent Disodium EDTA 0.05 emulsion stabilizer sodium chloride 0.8 preservative Phenoxyethanol 0.3

Experimental Example 1 - Confirmation of water drop formation results according to the type of main emulsifier

The water drop image of the cosmetic prepared according to the composition of Example 1 and Comparative Example 1 was visually confirmed. As a result of comparing the dimethicone cross polymer combined with polyglycerin (Example 1) and polyethylene glycol (Comparative Example 1) as the main emulsifier, a larger water drop emulsion was produced when using a polyglycerin-based emulsifier as shown in FIG. It is formed and has excellent water-in-water feel and has a viscosity of 20,000 to 25,000 cps, which is more than half lower than the formed viscosity of 45,000 to 50,000 cps when a polyethylene glycol emulsifier is used, making it more suitable for a water-in-oil cosmetic composition with low viscosity And it was found.

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

In this Experimental Example 2, the cosmetic composition according to the content of 'lauryl polyglyceryl-3 polydimethylsiloxyethyl dimethicone' (trade name KF-6105 of ShinEtsu, Japan), which is an auxiliary emulsifier containing a branched polymer linked with a hydrophilic linkage group. Viscosity and water drop formation and dispersibility were checked. The viscosity according to the present invention was measured using a DV-2+ PRO viscometer from Brookfield Company at 30° C. under the conditions of #4 spindle and 12 rpm. In addition, the formation of water drops was visually confirmed by applying the cosmetic according to the present invention to the skin, and the dispersibility was also evaluated by relative visual evaluation of whether or not pigment bands were formed.

content 0% 0.30% 0.50% 0.70% One% viscosity 25150 25350 25750 30000 29650 drop formation O O O X X dispersibility Inadequate usually Great Great Great

As shown in Table 4, as the content of 'lauryl polyglyceryl-3 polydimethylsiloxyethyl dimethicone' containing a polyglycerin-based branched polymer as an auxiliary emulsifier increases, it can be seen that the dispersibility of the powder phase is improved. could 3 shows the dispersibility difference between Comparative Example 2, which is the case where the auxiliary emulsifier is not used, and Experimental Example 1, in which 0.5 wt% of the auxiliary emulsifier is used. could be confirmed with

However, when the content of the auxiliary emulsifier exceeds 0.5% by weight, water drops are not formed and the viscosity increases, so it can be seen that the content is not suitable as a cosmetic according to the present invention.

Experimental example 3 - Check the viscosity, moisture value, and water drop formation effect by internal phase content

In this Experimental Example 3, the viscosity of the cosmetic composition according to the purified water content of the aqueous phase (inner phase) and whether water drops were formed were confirmed. As the purified water content of the aqueous phase increased, the content of silicone oil 1 was decreased to control the contents of the aqueous phase and the oil phase.

Viscosity according to the present invention was measured under the same conditions as in Experimental Example 2, and the formation of water drops was also visually confirmed in the same manner as in Experimental Example 2.

The moisture value according to the present invention was measured immediately after applying the cosmetic with the content of purified water in the inner coat to the skin using 'Skin Touch' of Amorepacific, which is a moisture measuring device.

Water content 38% 43% 48% 53% 58% viscosity 1700 2950 4650 9050 25150 moisture value 63 88 96 99 99 drop formation X X X O O

As shown in Table 4 above, in the case of a cosmetic containing 43% or less of purified water, the moisture value was low, so it was not suitable as a cosmetic according to the present invention, and when it contained 48% of purified water, the moisture value was excellent, but As shown, it was not suitable because water drops were not generated. When the content of purified water was 53% or more, both the moisture value and the generation of water drops were excellent, but when the purified water content of the inner layer was 58% or more, it was found that the viscosity increased significantly.

Claims (13)

In the high internal phase water-in-oil type low-viscosity cosmetic composition comprising an aqueous phase part, an oil phase part and a powder part,
The oil phase includes silicone oil and an emulsifier having a hydrophilic bonding group,
The emulsifier is a cross-linked polymer linked to a hydrophilic linkage; and
It contains a branched polymer linked by a hydrophilic linkage,
The cross-linked polymer linked with the hydrophilic bonding group is dimethicone/polyglyceryl-3 crosspolymer, lauryl dimethicone/polyglycerin-3 crosspolymer, and polyglyceryl-3/lauryl polydimethylsiloxyethyldimethicone crosspolymer. Any one or more selected from the group consisting of,
The branched polymer connected with the hydrophilic bonding group is a group consisting of polyglyceryl-3 disiloxane dimethicone, polyglyceryl-3 polydimethyldisiloxyethyl dimethicone, and laurylpolyglyceryl-3 polydimethylsiloxyethyl dimethicone. Any one or more selected from
The cross-linked polymer linked with the hydrophilic bonding group is included in an amount of 1 to 10% by weight based on the total weight of the composition,
The high-resistance water-in-oil type low-viscosity cosmetic composition, characterized in that the branched polymer connected with the hydrophilic bonding group is included in an amount of 0.1 to 1% by weight based on the total weight of the composition.
According to claim 1,
The composition is based on 100% by weight of the total
50 to 80% by weight of the water phase;
10 to 40% by weight of the oil phase; and
High resistance water-in-oil type low-viscosity cosmetic composition comprising 1 to 20% by weight of the powder part.
delete delete delete delete According to claim 1,
The silicone oil is dimethicone, trisiloxane, disiloxane, cyclopentasiloxane, cyclohexasiloxane, methyltrimethicone, caprylylmethicone, phenyltrimethicone, diphenyldimethicone, diphenylsiloxyphenyltrimethicone and A high internal phase water-in-oil type low-viscosity cosmetic composition, characterized in that at least one selected from the group consisting of dimethiconol.
According to claim 1,
The silicone oil is included in an amount of 10 to 40% by weight based on the total weight of the composition.
According to claim 1,
The water-in-oil type low-viscosity cosmetic composition of the water-in-oil phase, characterized in that the water phase comprises at least one selected from the group consisting of purified water, a moisturizer, an ion sequestrant, an emulsion stabilizer, a preservative, and a fragrance.
According to claim 1,
The powder part is titanium dioxide, zinc oxide, talc, iron oxide, methyl methacrylate cross polymer, mica, kaolin, sericite, alumina, barium sulfate, polymethyl methacrylate, any one selected from the group consisting of organic pigments and natural pigments A high internal phase water-in-oil type low viscosity cosmetic composition comprising the above.
According to claim 1,
The cosmetic composition has a viscosity of 10,000 to 30,000 cps (centipoise).
Claims 1, 2, and any one of claims 7 to 11, wherein any one of the high internal phase water-in-oil type low-viscosity cosmetic composition; and
a carrier impregnated with the cosmetic composition;
Cosmetics containing.
13. The method of claim 12,
The cosmetic product further comprises an applicator for taking the cosmetic composition from a carrier impregnated with the high internal phase, water-in-oil type, low-viscosity cosmetic composition.

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