KR102598347B1 - Oil in water type makeup cosmetic composition - Google Patents

Abstract

The present invention relates to an oil-in-water makeup cosmetic composition comprising an aqueous phase and an oil phase, wherein the aqueous phase includes an inorganic powder coated with a hydrophilic coating agent and polyurethane.

Description

{OIL IN WATER TYPE MAKEUP COSMETIC COMPOSITION}

The present invention relates to an oil-in-water makeup cosmetic composition.

Oil-in-water makeup cosmetics in which the oil phase, the inner phase, is dispersed in the water phase, which is a continuous phase, are preferred by consumers because of their excellent initial moisture and easy spreadability. However, they have the disadvantage of low durability and a dry finish after applying the cosmetics, so they are not widely used as makeup cosmetics. there is.

In the past, attempts were made to increase the oil content of oil-in-water cosmetic compositions using polyurethane-based thickeners, but additional emulsifiers or surfactants were required to stabilize the formulation, so there were limitations in increasing the oil content, especially In the case of makeup cosmetic compositions, there was a problem that the phases of the formulation were separated due to the colorant that was essentially contained therein.

In addition, conventional makeup cosmetics containing highly hydrophilic oil-in-water emulsifiers had the disadvantage of being easily removed by water or sweat, resulting in poor durability.

Therefore, there was a need for the development of an oil-in-water cosmetic composition that does not contain emulsifiers and surfactants, does not cause phase separation of the formulation due to colorants, and has excellent durability.

The present invention aims to provide a makeup cosmetic in a stable formulation that uses polyurethane as a thickener but does not require additional emulsifiers or surfactants, has a high oil content, and is stable.

The present invention provides an oil-in-water makeup cosmetic composition comprising an aqueous phase and an oil phase, wherein the aqueous phase includes an inorganic powder coated with a hydrophilic coating agent and polyurethane.

The oil-in-water makeup cosmetic composition according to the present invention contains polyurethane as a thickener in the water phase, does not require additional emulsifiers or surfactants, and has a high oil content, providing excellent initial moisture and good spreadability, while allowing cosmetic application. The post-finish feeling is not dry but has excellent durability, and the oil can increase shine and moisturizing power. In addition, phase separation due to colorants does not occur, so the stability of the formulation is excellent.

Hereinafter, the oil-in-water makeup cosmetic composition according to the present invention will be described in detail.

Unless otherwise specified, the names of compounds mentioned in this specification are INCI (International Nomenclature Cosmetic) listed in the International Cosmetic Ingredient Dictionary (ICID) published by the Cosmetic, Toiletry and Fragrance Association (CTFA). Ingredient) Name, and if the name does not exist among the INCI Names, it means a compound according to the IUPAC nomenclature established by the International Union of Pure and Applied Chemistry (IUPAC). If a compound according to the IUPAC nomenclature does not exist, it means a compound corresponding to the name of the compound commonly used in the technical field of the present invention.

In this specification, Oil in Water (O/W) type refers to an emulsion formulation in which the continuous phase is an aqueous phase and the dispersed phase is an oil phase.

As used herein, an emulsion formulation refers to a formulation in which a dispersed phase containing one or more liquid phases is dispersed in the form of droplets in a continuous phase containing one or more liquid phases.

Awards

In one embodiment according to the present invention, the water phase includes water, and the water phase includes a hydrophilic material that dissolves in water.

Coated with hydrophilic coating inorganic powder

The water phase according to the present invention includes an inorganic powder coated with a hydrophilic coating agent.

In one embodiment of the present invention, the hydrophilic coating agent contains at least one of silica and cellulose.

In one embodiment of the present invention, the content of the hydrophilic coating agent is 2% by weight to 15% by weight based on the total weight of the inorganic powder. If it is less than 2% by weight, the coating of the hydrophilic coating agent on the inorganic powder is not uniform overall, so the effect of the hydrophilic coating is insignificant, and if it is more than 15% by weight, the color development effect due to the inorganic powder is reduced, so more It has the disadvantage of requiring inorganic powder.

In one embodiment of the present invention, the content of the inorganic powder coated with the hydrophilic coating agent is 0.01% by weight to 10% by weight based on the total weight of the composition. If the content of the inorganic powder coated with the hydrophilic coating agent is less than 0.01% by weight, the coloring effect is insufficient and cannot function as a makeup cosmetic, and if it is more than 10% by weight, the stability of the formulation is reduced.

In one embodiment of the present invention, the inorganic powder coated with the hydrophilic coating agent can be manufactured by a method known in the art, and the method is not particularly limited. In general, a precursor capable of forming a hydrophilic coating layer after dispersing inorganic powder (for example, in the case of a silica layer, tetraethoxysilane is added and hydrolyzed by heat treatment for 1 to 6 hours at a temperature of 50 to 400 ° C. The surface of inorganic pigments can be treated with silica.

In one embodiment of the present invention, the inorganic powder is not particularly limited as long as it can produce color as a colorant.

In one embodiment of the present invention, the inorganic powder may be titanium oxide, yellow iron oxide, red iron oxide, or black iron oxide.

The inorganic powder includes titanium oxide and yellow, red, and black iron oxide, but is not limited thereto.

In one embodiment of the present invention, the average particle diameter of the inorganic powder is 200 nm to 600 nm. If the average particle diameter of the inorganic powder is less than 200 nm, the coloring effect is insignificant, and if it is more than 600 nm, the particle feel becomes rough and the feeling of use deteriorates.

Polyurethane

The water phase according to the invention comprises polyurethane.

In one embodiment of the present invention, the polyurethane is an ethoxylate-based urethane.

In one embodiment of the present invention, the ethoxylate-based urethane is an isophorone diisocyanate (IPDI)-based compound.

In one embodiment of the present invention, the isophorone diisocyanate-based compound is a compound represented by the following formula (1).

[Formula 1]

In the above formula (1), the total number of n in the formula (1) is 50 to 120, preferably 75 to 100, more preferably n is 75 or 100, and R is independently an alkyl group having 12 to 24 carbon atoms or 12 carbon atoms. It is an alkenyl group with 1 to 24 carbon atoms, preferably an alkyl group with 12 to 24 carbon atoms, and more preferably an alkyl group with 18 carbon atoms.

In one embodiment of the present invention, the isophorone diisocyanate-based compound is disteareth-75 IPDI (disteareth-75 IPDI) or disteareth-100 IPDI (disteareth-100 IPDI).

In one embodiment according to the present invention, the polyurethane is 0.1% by weight to 10% by weight based on the total weight of the composition. If it is less than 0.1% by weight, the effect as a thickener does not appear, and if it is more than 10% by weight, the hardness of the formulation increases, and the feeling of use, such as flowability and floating, deteriorates.

paid

In one embodiment according to the present invention, the oil phase includes oil, and the oil phase includes a lipophilic substance that dissolves in the oil.

oil

In this specification, “oil” refers to a substance in which all or part of the oil is separated from an aqueous phase containing water when mixed with water at room temperature and pressure. In the present invention, the oil is not particularly limited as long as it meets this definition and does not impair the effect intended by the present invention, but specific examples are described as follows.

In one embodiment of the present invention, the oil is at least one selected from the group consisting of hydrocarbon-based oil, ester-based oil, diester-based oil, triglyceride-based oil, carbonate-based oil, alcohol oil, and silicone-based oil. .

In one embodiment of the present invention, the hydrocarbon-based oil is any selected from the group consisting of squalene, hydrogenated polyisobutene, hydrogenated poly(C6-14 olefin), hydrogenated polydecene, paraffin, ceresin, and microcrystalline wax. There is more than one.

In one embodiment of the present invention, the ester oil is triethylhexanoin, cetyl ethylhexanoate, cetyl octanoate, cetyl isooctanoate, octyldodecyl myristate, isopropyl palmitate, and isopropyl myristate. State, Butylene Glycol Dicaprylate/Dicaprate, Tocopherol Acetate, Coco-Caprylate/Caprate, Jojoba Seed Oil, Dicaprylic Carbonate, Pentaerythrityl Tetraethylhexanoate and Pentaerythrityl Tetraisostearate. It is one or more selected from the group consisting of.

In one embodiment of the present invention, the diester oil is butylene glycol dicaprylate, dicaprate, diisostearyl maleate, di-C12-13 alkyl maleate, neopentyl glycol diheptanoate, tridecyl stear. It is at least one selected from the group consisting of late, nerpentyl glycol dicaprylate/dicaprate, tridecyl trimellitate, and dicaprylyl carbonate.

In one embodiment of the present invention, the carbonate-based oil is dialkyl carbonate.

In one embodiment of the present invention, the triglyceride-based oil is selected from the group consisting of caprylic/capric triglyceride, caprylic/capric/stearic triglyceride, triethyloctanoin, and tricaprylin. There is more than one thing that becomes.

In one embodiment of the present invention, the alcohol oil is selected from the group consisting of octyldodecanol, 2-butyloctanol, 2-hexyldecanol, 2-undecylpentadecanol, oleyl alcohol, and isostearyl alcohol. There is more than one selected.

In one embodiment of the present invention, the silicone oil is dimethicone, cyclomethicone, polydimethylsiloxane, methylphenylpolysiloxane, methylcyclopolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, It is at least one selected from the group consisting of tetradecamethylhexasiloxane and octamethyltrisiloxane.

In one embodiment of the present invention, the content of the oil is 0.01% by weight to 50% by weight based on the total weight of the composition. If the liquid content is less than 0.01% by weight, the moisturizing and glossy effects of the oil are insufficient, and if it is more than 50% by weight, the formulation is not stabilized with polyurethane alone without an additional emulsifier.

In one embodiment of the present invention, the formulation of the composition may be supported on, for example, a sponge.

The sponge may be a natural sponge or a synthetic sponge, and the natural sponge may be, for example, a sponge sponge, a natural rubber sponge, or the like. In addition, the synthetic sponge includes, for example, expanded urethane foam, butadiene rubber (BR), styrene-butadiene rubber (SBR), natural rubber (NR), 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. ), EPDM (Ethylene propylene diene monomer) rubber, polyvinyl alcohol (PVA), nitrile rubber, and ethylene vinyl acetate (EVA). When the composition is supported on a sponge, the dispersion stability is increased so that the water phase component and the oil phase component are not separated.

In addition, the composition according to the present invention may contain, in addition to the above-mentioned substances, other ingredients that can preferably have a synergistic effect on the main effect within the range that does not impair the main effect. Additionally, the composition according to the present invention may further include a humectant, emollient, ultraviolet absorber, preservative, disinfectant, antioxidant, pH adjuster, fragrance, cooling agent or antiperspirant. The mixing amount of the above components can be easily selected by a person skilled in the art within a range that does not impair the purpose and effect of the present invention.

Hereinafter, the present invention will be described in more detail through examples. However, these examples are only intended to specifically explain the present invention, and the scope of the present invention is not limited by these examples.

<Manufacturing example> Manufacturing of water-based makeup cosmetics

Examples 1 to 3 according to the steps described below according to the compositions shown in Tables 1 and 2 below. And the oil-in-water makeup cosmetics of Comparative Examples 1 to 4 were prepared.

ingredient Comparative Example 1 Comparative Example 2 Example 1 paid Butylene Glycol Dicaprylate/Dicaprate 5.00 10.00 10.00 di-C12-13 alkyl maleate 5.00 10.00 10.00 C12-15 alkyl benzoate 5.00 10.00 10.00 Phenyltrimethicone 3.00 5.00 5.00 Cyclopentasiloxane 3.00 5.00 5.00 Cetearyl alcohol 1.20 1.20 - Glyceryl Stearate 1.00 1.00 - PEG-100 Stearate 1.00 1.00 - Awards Titanium oxide coated with silica ^{1 )} 2.00 2.00 2.00 Red iron oxide coated with silica ^{2 )} 0.02 0.02 0.02 Purified water remaining amount remaining amount remaining amount glycerin 5.00 5.00 5.00 Butylene glycol 10.00 10.00 10.00 Phenoxyethanol Appropriate amount Appropriate amount Appropriate amount Disteares-100 IPDI - - 2.50 Polyacrylate-13, polyisobutene, polysorbate 20, sorbitan isostearate 1.00 1.00 -

1) Titanium oxide is coated using silica in an amount of 10% by weight based on the weight of titanium oxide / Sympholight WW (JGC C&C)

2) Silica was used in an amount of 12% by weight based on the weight of iron oxide to coat iron oxide / Sympholight RW (JGC C&C)

ingredient Comparative Example 3 Comparative Example 4 Example 2 Example 3 paid Butylene Glycol Dicaprylate/Dicaprate 10.00 10.00 10.00 10.00 di-C12-13 alkyl maleate 10.00 10.00 10.00 10.00 C12-15 alkyl benzoate 10.00 10.00 10.00 10.00 Phenyltrimethicone 5.00 5.00 5.00 5.00 Cyclopentasiloxane 5.00 5.00 5.00 5.00 Titanium oxide coated with alkylsilane ³⁾ 5.00 - - - Red iron oxide coated with alkylsilane ⁴ ) 0.05 - - - Awards titanium oxide - 5.00 - - red iron oxide - 0.05 - - Titanium oxide coated with silica ^{5 )} - - 5.00 - Red iron oxide coated with silica ^{6 )} - - 0.05 - Titanium oxide coated with cellulose ^{7 )} - - - 5.00 Red iron oxide coated with cellulose ^{8 )} - - - 0.05 Purified water remaining amount remaining amount remaining amount remaining amount glycerin 5.00 5.00 5.00 5.00 Butylene glycol 10.00 10.00 10.00 10.00 Phenoxyethanol Appropriate amount Appropriate amount Appropriate amount Appropriate amount Disteares-100 IPDI 2.50 2.50 2.50 2.50

3) Coating titanium oxide using alkylsilane in an amount of 2% by weight based on the weight of titanium oxide / OTS TiO2 CR-50 (Daito Kasei)

4) Coating iron oxide using alkylsilane in an amount of 2% by weight based on the weight of iron oxide / OTS-2 RED R-516L (Daito Kasei)

5) Titanium oxide was coated using silica in an amount of 10% by weight based on the weight of titanium oxide / Sympholight WW (JGC C&C)

6) Silica was used in an amount of 12% by weight based on the weight of iron oxide to coat iron oxide / Sympholight RW (JGC C&C)

7) Cellulose was used in an amount of 5% by weight based on the weight of titanium oxide to coat titanium oxide/C2-5 TiO2 CR-50 (Daito Kasei)

8) Cellulose was used in an amount of 5% by weight based on the weight of iron oxide to coat iron oxide / C2-5 RED R-516P (Daito Kasei)

① An oil dispersion was prepared by mixing the ingredients contained in the oil phase at 75°C according to the composition ratio in Table 1 above.

② In a separate container, an aqueous solution was prepared by mixing the components contained in the aqueous phase at 70°C, and the colorant was mixed and dispersed in the aqueous solution.

③ The oil phase dispersion of step ① was added to the aqueous solution of step ② and mixed by stirring with a homomixer.

④ After the cooling temperature was set to about 30°C, an oil-in-water makeup cosmetic composition was prepared by complete degassing.

< Test example 1> Comparison of formulation stability

In order to confirm the formulation stability of the makeup cosmetic composition according to the present invention, 10 g of each of the compositions of Examples 1 to 3 and Comparative Examples 1 to 4 were taken and placed in a low temperature constant temperature bath at 4°C, a constant temperature bath at 30°C, and a constant temperature bath at 45°C. After placing each sample in a high-temperature thermostat and a cycle chamber that circulates between -10°C and 45°C for 24 hours, changes in the formulation were observed to confirm stability according to Haga's standards, and the results are shown in Table 3 below.

(Stability evaluation criteria)

○: Stable with no deformation of the formulation.

△: A pigment band occurs within the formulation, and the dispersion stability of the formulation decreases.

X: The oil and water phases in the formulation are separated, making the formulation very unstable.

Test Items 4°C 30°C 45°C cycle Comparative Example 1 ○ ○ ○ ○ Comparative Example 2 △ △ X X Example 1 ○ ○ ○ ○ Comparative Example 3 X △ X X Comparative Example 4 △ △ △ △ Example 2 ○ ○ ○ ○ Example 3 ○ ○ △ ○

From Table 3, it can be seen that in the case of Comparative Example 2, the stability of the formulation was poor because a large amount of oil in the inner phase was not stably emulsified.

In Comparative Example 1, it can be confirmed that the formulation is stable even though the oil content is small, but in Example 1, which uses polyurethane as a thickener, it can be confirmed that stability is excellent even though it contains a high content of oil.

In addition, when comparing the stability of inorganic powder according to the type of coating agent, in the case of Comparative Example 3 using an inorganic powder coated with lipophilic alkylsilane, it was observed that the emulsification was separated immediately under harsh conditions, and the inorganic powder was not coated and thus had weak hydrophilicity. In Comparative Example 4, where the powder was dispersed in the water phase, the dispersion stability was reduced and a pigment band was observed. It can be seen that in Examples 1 to 3, in which inorganic powder coated with hydrophilic cellulose or silica is dispersed in the water phase, stability is excellent.

< Test example 2> Skin Moisturizing power evaluation

In order to determine the skin moisturizing power upon one application, the makeup cosmetic compositions of Example 1 and Comparative Example 1 were applied to the face and inner forearm of 20 adult women in their 20s and 30s, respectively, and then measured with a coniometer ( The amount of skin moisture was measured using a corneometer (CM820 courage Khazaka electronic GmbH, Germany). Before starting application, the skin moisture content was measured in advance using a coniometer under constant temperature and humidity conditions (24°C, 40% humidity) and used as a default value, and changes were measured immediately after application and after 4 hours and 8 hours. The results are shown in Table 4 below.

<Coniometer measurement method>

Principle: Moisturizing power is measured by measuring the amount of moisture present in the epidermis of the skin using a sensor and quantifying the amount of moisture to calculate the amount of moisture.

test substance Skin moisture content (%) Before application Immediately after application 1 hour later 4 hours later 8 hours later Example 1 58 71 69 69 67 Comparative Example 1 59 74 65 63 60

In Table 4, Comparative Example 1 showed a high moisture content immediately after application because the content of the aqueous phase component was higher, but it can be seen that the moisture content rapidly decreased after 1 hour, and the makeup cosmetic of Example 1 according to the present invention The composition has a high oil content, so it has an occlusive effect that prevents the applied aqueous component from evaporating, and it can be seen that the skin moisturizing effect lasts for more than 8 hours.

< Test example 3> Skin Moisturizing / Glossiness evaluation

A survey was conducted on 20 adult women in their 20s to 40s regarding the feeling of moisture and shine after applying the makeup cosmetic composition of Example 1 and Comparative Example 1, and the average value of the evaluated values (5-point scale) is shown in the table below. It is shown in 5.

I feel moisturized I can feel the shine. Example 1 4.2 4.8 Comparative Example 1 3.9 3.1 <Evaluation criteria>
5 points: Very effective.
4 points: It is slightly effective.
3 points: Average.
2 points: Almost ineffective.
1 point: No effect at all.

From Table 5, it can be seen that the makeup cosmetic composition of Example 1 according to the present invention stabilizes a high content of oil and exhibits excellent moisturization and gloss.

Claims (6)

A water-based makeup cosmetic composition containing an aqueous phase and an oil phase,
The water phase includes inorganic powder and polyurethane coated with a hydrophilic coating agent,
An oil-in-water makeup cosmetic composition, characterized in that the composition does not contain emulsifiers and surfactants. According to paragraph 1,
An oil-in-water makeup cosmetic composition wherein the hydrophilic coating agent contains at least one of silica and cellulose. According to paragraph 1,
The oil-in-water makeup cosmetic composition wherein the content of the hydrophilic coating agent is 2% to 15% by weight based on the total weight of the inorganic powder. According to paragraph 1,
The oil-in-water makeup cosmetic composition wherein the content of the inorganic powder coated with the hydrophilic coating agent is 0.01% by weight to 10% by weight based on the total weight of the composition. According to paragraph 1,
An oil-in-water makeup cosmetic composition wherein the polyurethane is an ethoxylate-based urethane. According to paragraph 1,
An oil-in-water makeup cosmetic composition wherein the polyurethane is 0.1% by weight to 10% by weight based on the total weight of the composition.