KR20230072179A - Oil-in-water type cosmetic composition with surfactant and emulsifier-free - Google Patents

Abstract

The present invention relates to an oil-in-water cosmetic composition that does not contain a surfactant and an emulsifier, comprising: an oil phase comprising at least one selected from the group consisting of an oil and a gelling agent; And it relates to an oil-in-water cosmetic composition comprising an aqueous phase containing at least one selected from the group consisting of polyvinyl alcohol (PVA) and purified water. The oil-in-water cosmetic composition provided in the present invention contains oil particles including oil phase and water phase components, thereby improving aesthetics, and maintaining the stability of emulsified particles even though it does not contain surfactants and emulsifiers to be combined with other oils. While preventing this, the hardness is low, so when applied to the skin, it can maximize the overall feeling of use, including spreadability and absorption. In addition, since it does not contain surfactants and emulsifiers, irritation to the skin can be minimized.

Description

Surfactant and emulsifier free water-in-water cosmetic composition {OIL-IN-WATER TYPE COSMETIC COMPOSITION WITH SURFACTANT AND EMULSIFIER-FREE}

The present invention relates to a surfactant and emulsifier-free oil-in-water cosmetic composition, and more particularly, by containing oil particles including oil phase and aqueous phase components, the stability of emulsified particles is maintained even though they do not contain surfactants and emulsifiers, It relates to an oil-in-water cosmetic composition that can gently permeate oil particles when applied to the skin while improving aesthetics.

Cosmetics have a function of protecting the skin from external factors such as ultraviolet rays and environmental pollution and delaying aging. Most cosmetics exist in a state in which an aqueous phase is dispersed in an oil phase or an oil phase is dispersed in an aqueous phase. At this time, in order to maintain a stable dispersion state, the use of an emulsifier (surfactant) is essential.

An emulsifier is a molecule having an amphiphilic structure composed of a hydrophilic group having affinity for water and a hydrophobic group having affinity for oil. The emulsifier is located at the interface between the oil phase and the water phase to lower the interfacial tension and forms an oil/water interface film at the phase boundary to prevent the particles from uniting with each other.

Emulsifiers can be classified by various properties such as use, performance, chemical structure, etc., and are generally divided into ionic and nonionic depending on the property of dissociation in water. Ionic emulsifiers that dissociate when dissolved in water are further divided into anionic, cationic, and amphoteric emulsifiers. A representative example of an anion is soap, which is a fatty acid salt, and a representative example of cation is a quaternary ammonium compound. In addition, nonionic emulsifiers that do not dissociate into ions when dissolved in water have hydrophilic parts such as glycerol, polyglycerol, sorbitan, polyoxyethylene glycol, etc., and have ester bonds or ether bonds with lipophilic parts such as fatty acids and fatty alcohols. there is.

Many commercially available emulsifiers are used with safety approval, but nevertheless, emulsifiers cause interfacial action in skin cells to destroy the phospholipid layer, so they can cause skin irritation or cause allergies. When the lipid layer is lost, the protective barrier is weakened and skin permeability increases. The barrier with increased permeability easily loses moisture, resulting in dull and dry skin. In addition, penetration of foreign substances becomes easy, causing sensitive skin reactions such as allergies.

However, if the surfactant and emulsifier are not included, the hardness of the oil-in-water type oil particles is lowered, and the size of the oil particles may increase due to a high possibility of combining with other oil particles other than the desired oil.

Therefore, it is an oil-in-water cosmetic that can improve the visual aesthetics while maintaining the stability of oil particles even though it does not contain a separate surfactant and emulsifier, and can maximize the overall feeling of use including spreadability and absorption while minimizing irritation to the skin when applied. There is a need for the composition.

In the field of cosmetics, capsules are mainly used to prevent spoilage of specific ingredients. In general, in the field of cosmetics, cosmetics have been developed by processing the capsule itself separately from cosmetics and compositions and then mixing it with the cosmetic composition. There is a problem in that the residue of the post-capsule remains on the skin, causing the user to feel uncomfortable. Therefore, it is necessary to develop a cosmetic composition containing stable capsules that can be maintained uniformly even when the cosmetic is stored for a long time while the capsule is automatically formed in the cosmetic without a separate capsule manufacturing process.

In the present invention, a cosmetic composition containing oil particles was prepared in the form of dispersing the oil phase in the aqueous phase without a separate capsule manufacturing process, and the effect of maintaining the stability of the emulsified particles even without containing a surfactant and an emulsifier was tested and the present invention has been completed.

One object of the present invention is to contain oil particles including oil phase and aqueous phase components, so that the stability of emulsified particles is maintained even though they do not contain surfactants and emulsifiers, and the oil particles permeate gently when applied to the skin while improving aesthetics. It relates to an oil-in-water cosmetic composition that can be used.

However, the technical problem to be achieved by the present invention is not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

According to one embodiment of the present invention, in the oil-in-water cosmetic composition that does not contain a surfactant and an emulsifier, an oil phase containing 80 to 99% by weight of oil and 1 to 20% by weight of a gelling agent; And a surfactant and emulsifier-free oil-in-water cosmetic composition comprising an aqueous phase containing at least one selected from the group consisting of polyvinyl alcohol (PVA) and purified water is provided.

In the present invention, the oil may be a surfactant- and emulsifier-free oil-in-water cosmetic composition containing general oil and silicone oil.

In the present invention, the aqueous phase further includes a carbomer, 0.1 to 0.5% by weight of the carbomer; 0.1 to 2% by weight of the PVA; And it may be a surfactant and emulsifier-free oil-in-water cosmetic composition containing purified water as the balance.

In the present invention, the gelling agent is DPEH (dextrin palmitate ethylhexanoate, dextrin palmitate ethylhexanoate), DM (dextrin myristate, dextrin myristate), polyacrylate, dextrin and fatty acid esters, glycerol and fatty acid esters, polyamide And it may be a surfactant and emulsifier-free oil-in-water cosmetic composition comprising at least one selected from the group glutamide.

The oil-in-water cosmetic composition provided in the present invention contains oil particles including oil phase and aqueous phase components, thereby improving aesthetics, and maintaining the stability of emulsified particles even though they do not contain surfactants and emulsifiers, preventing them from being combined with other oils. It has a low hardness while preventing it, and when applied to the skin, it can maximize the overall feeling of use, including spreadability and absorption.

1 shows a schematic diagram of an apparatus used in the production of the present invention.
Figure 2 shows images of formulations formed according to Examples 1 to 4 of the present invention.
3 to 6 are specific images under a microscope (X40) of formulations formed according to Examples 1 to 4 of the present invention.
7 shows images of formulations formed according to Comparative Examples 1 to 4 of the present invention.
8 to 11 are specific images of the formulations formed according to Comparative Examples 1 to 4 of the present invention with a microscope (X40).

Hereinafter, an example will be described in detail for a more detailed explanation. However, the following examples are illustrative, and the scope of the present invention is not limited thereto.

According to one embodiment of the present invention, an oil phase containing at least one selected from the group consisting of general oil, silicone oil and gelling agent; And it relates to an oil-in-water cosmetic composition comprising an aqueous phase containing at least one selected from the group consisting of carbomer, polyvinyl alcohol (PVA), and purified water.

The term 'in-water type' in this specification refers to an emulsion in which oil droplets are dispersed in water, and is also referred to as an o/w type emulsion, and representative examples include milk, mayonnaise, and varnish cream. It is also the counterpart of 'water-in-oil type' emulsion, which means an emulsion or emulsified product in which water is dispersed as fine particles in oil and is in an emulsified state.

The common oil may serve to change, dissolve, or suspend the physical properties of other substances. Suitable common oils include natural oils such as coconut oil; hydrocarbons such as mineral oil and hydrogenated polyisobutene; fatty alcohols such as octyldodecanol; esters such as C12-C15 alkyl benzoates; diesters such as propylene dipelargonate; and triesters, such as glyceryl trioctanoate.

The normal oil component may also be a mixture of oils of different viscosities.

Examples of low viscosity oils are isotridecyl isononanoate, PEG-4 diheptanoate, isostearyl neopentanoate, tridecyl neopentanoate, cetyl octanoate, cetyl palmitate, cetyl Ricinoleate, Cetyl Stearate, Cetyl Myristate, Cocodicaprylate/Caprate, Decyl Isostearate, Isodecyl Olate, Isodecyl Neopentanoate, Isohexyl Neopentanoate, Octyl Palmitate, Dioctyl Malate, tridecyl octanoate, myristyl myristate, octyldodecanol, or a mixture of octyldodecanols, acetylated lanolin alcohol, cetyl acetate, isododecanol, polyglyceryl 3-diisostearate, or mixtures thereof.

High viscosity oils include castor oil, lanolin and lanolin derivatives, triisocetyl citrate, sorbitan sesquioleate, C6-18 triglycerides, caprylic/capric/triglycerides, coconut oil, corn oil, cottonseed oil, glyceryl triacetyl Hydroxysterate, Glyceryl Triacetyl Ricinolate, Glyceryl Trioctanoate, Hydrogenated Castor Oil, Linseed Oil, Mink Oil, Olive Oil, Palm Oil, Rapeseed Oil, Soybean Oil, Sunflower Seed oil, tallow, tricaprine, trihydroxystearin, triisostearin, trilaurine, trilinolein, trimyristin, triolein, tripalmitin, tristearin, walnut oil, wheat germ oil germ oil), cholesterol, or mixtures thereof. Mineral oils, such as liquid paraffin or liquefied petroleum, animal oils, such as perhydrosqualene or arara oil, or optionally sweet almonds, among other optional non-silicone fatty substances; Mention may be made of vegetable oils such as calophyllum, palm, castor, avocado, jojoba, olive or cereal germ oil. In addition, esters of lanolinic acid, oleic acid, lauric acid, stearic acid or myristic acid, for example alcohols such as oleyl alcohol, linoleyl or linolenyl alcohol, isostearyl alcohol or octyldodecanol; or acetylglycerides, octanoates, decanoates or ricinolates of alcohols or polyalcohols.

The silicone oil includes at least one selected from the group consisting of phenyl trimethione, dimethicone, cyclomethicone, polydimethylsiloxane, and silicone gum. It may be a silicone oil or silicone oil mixture, but phenyltrimethicone may be suitably used in terms of improving the percutaneous absorption and feeling of use of the water-in-water cosmetic composition.

In the present invention, the oil phase may include 75 to 99% by weight and 80 to 95% by weight of the general oil and the silicone oil, and suitably in terms of improving transdermal absorption and soft feeling of use of the oil-in-water cosmetic composition It may be an oil-in-water cosmetic composition containing 80 to 90% by weight, but is not limited thereto.

The oil phase may include 40 to 60% by weight, 40 to 55% by weight of the general oil, and preferably 40 to 50% by weight in terms of forming soft oil particles of the water-in-water cosmetic composition. It may be a type cosmetic composition, but is not limited thereto.

The oil phase may include 30 to 60% by weight, 30 to 55% by weight of the silicone oil, and preferably 30 to 50% by weight in terms of improving the percutaneous absorption and soft feeling of the oil-in-water cosmetic composition It may be an oil-in-water cosmetic composition, but is not limited thereto.

In the present invention, the oil phase may include 0.1 to 25% by weight and 5 to 20% by weight of the gelling agent, while lowering the hardness of the particle surface of the oil to prevent coalescence with other oil particles and other than silicone oil In terms of gelling only the oil of, it may be suitably an oil-in-water cosmetic composition containing 10 to 20% by weight, but is not limited thereto.

The gelling agent maintains the stability of the oil particles, and gelates only oil other than silicone oil to form oil particles to improve a feeling of use and aesthetics. However, if it is out of the above range, the strength of the oil particles is significantly low or high, and the feeling of use and aesthetic feeling when applied to the skin may be deteriorated.

In the present invention, the aqueous phase may include 0.01 to 0.5% by weight, 0.1 to 0.5% by weight of the carbomer, and preferably 0.1 to 0.3% by weight in terms of maintaining the stability of the water-in-water cosmetic composition. It may be a type cosmetic composition, but is not limited thereto.

The carbomer is an anionic polymer, in which an acidic polymer compound is mainly polymerized with acrylic acid, and has an effect of maintaining stability by increasing the viscosity of the disclosed oil-in-water cosmetic composition, and when the cosmetic is out of the above range, a feeling of use when the cosmetic is applied to the skin. And aesthetics may be deteriorated.

In the present invention, the aqueous phase may include 0.01 to 2% by weight, 0.1 to 2% by weight of polyvinyl alcohol (PVA), increase the emulsifying power of the oil-in-water cosmetic composition, and between particles during the manufacturing process of the water-in-water cosmetic composition. In terms of preventing coalescence, it may be suitably an oil-in-water cosmetic composition containing 0.1 to 1% by weight, but is not limited thereto.

The PVA (polyvinyl alcohol) is a water-soluble material, and when dispersed in water, it forms a colloidal liquid and has excellent dispersion stability. When mixing with the carbomer and water-soluble silicone used in the present invention, the hardness of the surface of the oil particles becomes too low as the content of the gelling agent decreases, resulting in a problem of coalescence between the particles, but the dispersibility and Emulsification also contributes to improvement. However, when it is out of the above range, the water resistance is reduced, and the feeling of use and aesthetic feeling when applied to the skin may be deteriorated.

In the present invention, the aqueous phase may further include 0.001 to 0.7% by weight, 0.01 to 0.6% by weight of water-soluble silicone, and in terms of improving adhesion when applied to the skin, water-in-water cosmetics containing 0.1 to 0.5% by weight are suitable. It may be a composition, but is not limited thereto.

The water-soluble silicone has a wax-like property at room temperature, has excellent compatibility with water, and can serve to increase adhesion to the skin by increasing water, amodimethicone, dimethicone / vinyl It may be an oil-in-water cosmetic composition containing at least one selected from the group consisting of Dimethicone Crosspolymer and BIS-PEG-18 Methyl Ether Dimethyl Silane. In terms of increasing the emulsifying power of the oil-in-water cosmetic composition, it may be suitably an oil-in-water cosmetic composition containing amodimethicone, but is not limited thereto.

In the present invention, the aqueous phase may be an oil-in-water cosmetic composition containing the balance of purified water.

The type of solvent that can be further added to the water-in-water cosmetic composition is not particularly limited, and for example, water, saline, DMSO, or a combination thereof may be used, but preferably purified water may be used. In addition, whitening agents, moisturizing agents, vitamins, sunscreens, perfumes, dyes, antibiotics, antibacterial agents, and antifungal agents may be included as necessary.

In the present invention, the gelling agent is DPEH (dextrin palmitate ethylhexanoate, dextrin palmitate ethylhexanoate), DM (dextrin myristate, dextrin myristate), polyacrylate, dextrin and fatty acid esters, glycerol and fatty acid esters, polyamide And it may contain at least one selected from the glutamide group, and in terms of maintaining the stability of the oily particles and forming oil particles by gelling only oils other than silicone oil, DPEH (dextrin palmitate ethylhexanoate, dextrin) It may be an oil-in-water cosmetic composition comprising palmite ethylhexanoate), DM (dextrin myristate, dextrin myristate), but is not limited thereto.

The polyamide may use a commercially available raw material oleocraft (oleocraft), and the glutamide is dibutyl ethlhexanoyl glutamide (dibutylethylhexanoylglutamide) and dibutyl lauroyl glutamide (dibutyllauroylglutamide). A commercially available raw material indiogel containing may be used.

In the present invention, the oil-in-water cosmetic composition may be characterized in that it does not contain a surfactant and an emulsifier.

Since the oil-in-water cosmetic composition does not contain a surfactant and an emulsifier, it is suitable to use the carbomer as a thickener, and the stability and application power of the formulation cannot be increased outside the scope of the present invention. In addition, the water-in-water cosmetic composition does not cause problems such as skin trouble due to the use of surfactants and emulsifiers.

In the present invention, the water-in-water cosmetic composition may take the form of a solution, emulsion, viscous mixture, and the like, and may include lotion, nutrient lotion, nutrient essence, massage cream, beauty bath water additive, body lotion, body milk, bath oil, baby Oil, baby powder, shower gel, shower cream, sunscreen lotion, sunscreen cream, suntan cream, skin lotion, skin cream, sun protection cosmetics, foundation, makeup base, BB cream, skin cover, concealer, lipstick, lip gloss , Lip balm, face powder, two-way cake, eyeshadow, eyeliner, mascara, cheek color, eyebrow pencils, cleansing milk, depilatory agent (for makeup), face and body lotion, face and body cream, skin whitening cream, hand Lotion, hair lotion, cosmetic cream, jasmine oil, bath soap, water soap, beauty soap, shampoo, hand sanitizer (hand cleaner), medicated soap (non-medical use), cream soap, facial wash, body cleanser, scalp cleanser, hair rinse , cosmetic soap, tooth whitening gel, toothpaste, and the like. To this end, the oil-in-water cosmetic composition may further include a solvent commonly used in the preparation of a cosmetic composition, or an appropriate carrier, excipient, or diluent within a range that does not impair the purpose and effect of the oil-in-water cosmetic composition of the present invention. .

The water-in-water cosmetic composition may include components that are widely known and used by experts in the field as necessary, as a conventional optional component for formulation of each formulation, while maintaining basic physical properties and quality in addition to the above-described composition.

In addition, as functional ingredients that can effectively act on the skin while improving affinity with the skin within a range that does not impair the purpose and effect of the water-in-water cosmetic composition of the present invention, a sunscreen component, a whitening component, a wrinkle functional component, and an antioxidant Ingredients, moisturizing ingredients, antibacterial ingredients, etc., which are widely known and used by experts in the art, may be used.

In addition, the water-in-water cosmetic composition of the present invention is a film emulsifying device for preparing microemulsion of Korean Patent Publication No. 10-1868854 or a membrane emulsifying device for producing coarse particles having a circulation tank of Korean Patent Publication No. 10-1932005. (drop) can be formed.

Hereinafter, the present invention will be described in more detail through examples. These examples are only for explaining the present invention in more detail, and it will be apparent to those skilled in the art that the scope of the present invention is not limited by these examples according to the gist of the present invention. .

Example

manufacturing example

While maintaining the overall temperature of the apparatus shown in FIG. 1 at 70 to 90 ° C., the DP TANK is filled with an oil phase and the CP TANK with an aqueous phase 1, and then the DP TANK is pressurized with nitrogen or compressed air. The oil phase (oil) in the DP TANK is discharged to the water phase in the CP TANK through the pores of the membrane connected to the inside of the CP TANK, forming oil drops of a certain size. Alkaline solutions such as arginine, toromethamine, NaOH, etc.) are added to CP TANK to thicken the carbomer to maintain and stabilize the dispersion of oil drops.

Efficacy evaluation according to content range of oil phase and aqueous phase

ingredient Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Paid
(g) Phenyl Trimethicone 35 35 35 21 0 0 3 6 MCT OIL 28 - 14 17.5 27 - 12 10.5 jojoba oil - 28 14 17.5 - 27 12 10.5 DPEH 7 7 7 14 3 3 3 3 award 1
(g) Purified water 229.63 229.63 229.63 229.63 230.98 230.98 229.63 229.63 propanediol 13.5 13.5 13.5 13.5 13.5 13.5 13.5 13.5 1,2-hexanediol 5.4 5.4 5.4 5.4 5.4 5.4 5.4 5.4 1,3-butylene glycol 13.5 13.5 13.5 13.5 13.5 13.5 13.5 13.5 carbomer 0.54 0.54 0.54 0.54 0.54 0.54 0.54 0.54 PVA 1.35 1.35 1.35 1.35 0 0 1.35 1.35 EDTA 0.14 0.14 0.14 0.14 0.14 0.14 0.14 0.14 award 2
(g) Purified water 5.4 5.4 5.4 5.4 5.4 5.4 5.4 5.4 arginine 0.54 0.54 0.54 0.54 0.54 0.54 0.54 0.54

As shown in Table 1, after preparing the oil-in-water cosmetic composition containing each component of Examples 1 to 4 and Comparative Examples 1 to 4 according to the above Preparation Example, particle state and feeling of use were evaluated and Table 2 below shown in

Specifically, the particle state of the water-in-water cosmetic composition prepared with the composition of Table 1 was visually observed for the degree of particle formation, ◎ is the formation of very stable particles, ○ is the formation of stable particles, and △ is the formation of non-uniform particles. , X indicates that the particle is destroyed. In addition, the feeling of use was expressed by evaluating the strength of the oil particles on a scale of 1 to 5. When applied on the back of the hand, 1 is soft enough to hardly feel the particle, 2 is soft with stable particle feel, 3 is normal, 4 is hard, The degree of spread on the skin when applied several times with a very hard particle feeling is indicated as 5.

result Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Particle State (Appearance) ○ ○ ○ ◎ X X X △ Feeling of use (strength) 2 2 2 5 One One One One

As shown in Table 2 and FIGS. 2 to 11, it can be seen that in Examples 1 to 4, the particle state is stably formed and the feeling of use is 2 or more, and in Comparative Examples 1 to 4, the particle state is not stable overall, It was confirmed that the feeling of use was all 1.

Specifically, in Examples 1 to 3, the content of phenyltrimethicone, a silicone oil, was fixed at 50% by weight of the oil phase, the gelling agent DPEH was fixed at 10% by weight of the oil phase, and the aqueous phase 1 and 2 were fixed at the same content and only the type of oil included in the oil phase was changed. Example 4 is a case in which the content of the silicone oil is lowered to 30% by weight of the oil phase and the content of the gelling agent is increased to 20% by weight of the oil phase compared to Examples 1 to 3.

Referring to Table 2 and FIGS. 2 to 6, regardless of the type of gelling oil, MCT OIL and jojoba oil, it can be seen that particles can be stably produced in the case of oil that can be thickened, and as the ratio of the gelling agent increases, It was found that the uniformity and strength of the oil particles increased and the feeling of use improved as the ratio of silicone oil increased. Accordingly, when it was suitably included in the ratio of the oil phase according to the present invention, it was found that the oil particles were uniformly formed to a size larger than the desired size, improving aesthetics and providing excellent feeling of use.

In Comparative Examples 1 and 2, silicone oil and PVA are not added, regardless of the type of oil included in the oil phase, the strength of the oil particles is weak, so they are destroyed into very small particles in the CP TANK discharge step, and the particle size was found to be non-uniform.

In Comparative Example 3, when 10% by weight of the oil phase and PVA were added to the silicone oil, the oil particles were formed, but as time passed, the number of united particles increased and floated toward the water surface, indicating that the particle size was non-uniform. I was able to confirm.

In Comparative Example 4, when 20% by weight of the oil phase and PVA were added to the silicone oil, it was confirmed that the oil particles could be formed, but the particle size was non-uniform and commercialization was impossible.

Referring to Table 2 and FIGS. 7 to 11, it can be seen that when the ratio of silicone oil and PVA is out of the range of the present invention, oil particles are united or formed non-uniformly, resulting in problems that are difficult to manufacture as an oil-in-water cosmetic composition. there was. Accordingly, when the silicone oil and PVA are added in the ratio according to the present invention, it was confirmed that the oil particles are not united and formed uniformly during the manufacturing process of the cosmetic composition.

Therefore, in the case of manufacturing with the mixing ratio of the present invention, it is possible to manufacture an oil-in-water cosmetic composition with improved aesthetics with invisible particles by forming uniform particles without oil particles uniting with each other, and all oil particles are soft and excellent It was confirmed that there is a critical significance for producing a cosmetic composition with a sense of use.

Claims (4)

In the water-in-water cosmetic composition containing no surfactant and emulsifier,
An oil phase comprising 80 to 99% by weight of oil and 1 to 20% by weight of a gelling agent; and
A surfactant and emulsifier-free oil-in-water cosmetic composition comprising an aqueous phase containing at least one selected from the group consisting of PVA (polyvinyl alcohol) and purified water. According to claim 1,
The oil is a surfactant and emulsifier-free oil-in-water cosmetic composition containing general oil and silicone oil. According to claim 1,
The aqueous phase further includes a carbomer,
The aqueous phase is 0.1 to 0.5% by weight of the carbomer; 0.1 to 2% by weight of the PVA; And a surfactant and emulsifier-free oil-in-water cosmetic composition comprising purified water as the balance. According to claim 1,
The gelling agent comprises at least one selected from the group consisting of dextrin palmitate ethylhexanoate (DPEH), dextrin myristate (DM), polyacrylate, dextrin and fatty acid esters, glycerol and fatty acid esters, polyamide, and glutamide. Surfactant and emulsifier-free oil-in-water cosmetic composition to be.

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