KR20210001354A - Oil in water type cream composition - Google Patents

Abstract

The present invention relates to a cosmetic composition comprising: an aqueous component; and a colorant, wherein the aqueous component consists of a film forming agent, a dispersing agent, a moisture evaporator and purified water, and has viscosity of 3000 cps or less. In addition, the cosmetic composition is capable of greatly improving the feeling of use and moisturizing power.

Description

Water-in-water cream formulation {OIL IN WATER TYPE CREAM COMPOSITION}

The present description relates to an oil-in-water cream formulation.

The oil formulation nourishes the skin and provides gloss and moisturizing power, but it is inconvenient to use because it does not have a refreshing feeling of moisture and its viscosity is low, so it flows down when applied to the face. Recently, in order to solve such inconveniences of customers, manufacturers have been studying water-in-water (O/W) compositions with a sense of moisture that stabilizes and contains high-content oil-soluble ingredients such as butter.

The easiest stabilization of a high content of oil-soluble components is to increase the viscosity of the aqueous phase by using a carbopol-based or acrylic thickener together with a surfactant. However, the oil-in-water composition prepared in this manner has a problem in that it is not differentiated from the conventional lotion or cream formulation from the viewpoint of the formulation, and it is difficult to exhibit the unique feeling and characteristics of the oil-soluble component.

Above all, since it contains a high content of oil-soluble ingredients, it is inevitable to be molded into a cream formulation, and such a cream formulation tends to increase in hardness over a long period of time, and thus there is a problem that the feeling of use decreases significantly as time passes. In particular, this aging problem rises with a higher tendency at low temperatures. Therefore, in cold seasons such as winter, cosmetics containing a high content of oil-soluble ingredients increase in hardness and harden over time, so that the feeling of use decreases and the moisturizing power also decreases. In order to solve the problem of increasing the hardness of the included oil-in-water cream formulation composition, many studies are still being conducted to this day.

One embodiment is to provide an oil-in-water cream formulation composition capable of preventing an increase in hardness even at low temperatures.

Another embodiment is to provide a cream formulation comprising the oil-in-water cream formulation composition.

According to one embodiment, a compound represented by the following formula (1), an emulsifier, butter, oil, and a water-soluble component are included, and the compound represented by the following formula (1) is an oil-in-water cream formulation comprising at least three times the amount of the emulsifier. to provide.

[Formula 1]

In Formula 1,

R ¹ and R ² are each independently a substituted or unsubstituted C11 to C20 alkyl group.

The compound represented by Formula 1 may be included in an amount of 3.5 times or more of the emulsifier content.

The compound represented by Formula 1 may be included in an amount of 3.8% to 4.6% by weight based on the total amount of the cosmetic composition.

The emulsifier may include glyceryl stearate, glyceryl stearate citrate, C14 to C22 alcohol, C12 to C20 alkyl glucoside, or a combination thereof.

The butter may be included in an amount of 20% to 30% by weight based on the total amount of the cosmetic composition.

The oil may include caprylic/capric triglyceride, octyldodecyl myristate, butylene glycol dicaprylate/dicaprate, or a combination thereof.

The water-soluble component may include a neutralizing agent, a polyol, a thickener, or a combination thereof.

The polyol may be a mixture of glycerin and butylene glycol.

According to another embodiment, there is provided a cream formulation comprising the medium-type cream formulation composition.

The oil-in-water cream formulation composition according to an embodiment can greatly improve the feeling of use and moisturizing power by alleviating the increase in hardness of the composition even though the oil-soluble component is contained in a high content by using a specific compound.

1 is a graph measuring the change in hardness over time of the oil-in-water cream formulation compositions according to Examples 1 to 6 and Comparative Examples 1 to 3.

Hereinafter, embodiments of the present invention will be described in detail so that those of ordinary skill in the art may easily implement the present invention. However, the present invention may be implemented in various different forms, and is not limited to the embodiments described herein.

In the present specification, when a portion such as a layer, a film, a region, or a plate is said to be “on” another portion, this includes not only the case where the other portion is “directly above” but also the case where there is another portion in the middle. Conversely, when one part is "directly above" another part, it means that there is no other part in the middle.

Unless otherwise defined herein, "combination" means mixing or copolymerization. In addition, "copolymerization" means block copolymerization or random copolymerization, and "copolymer" means block copolymer or random copolymer.

Hereinafter, an oil-in-water cream formulation composition according to an embodiment will be described.

The oil-in-water cream formulation composition according to an embodiment includes a compound represented by the following formula (1), an emulsifier, butter, oil, and a water-soluble component, but the compound represented by the following formula (1) is included in an amount of at least three times the amount of the emulsifier.

[Formula 1]

In Formula 1,

R ¹ and R ² are each independently a substituted or unsubstituted C11 to C20 alkyl group.

For example, R ¹ and R ² may each independently be a substituted or unsubstituted C15 to C20 alkyl group.

In general, a cosmetic composition containing a high content of oil-soluble ingredients such as butter has a high hardness, and despite its high hardness, the use of it is due to its high hardness, so that the cosmetic material remains on the skin when applying the cosmetic, thereby forming the moisturizing film of the skin as an emollient. Because it can be formed. However, in recent years, in the cosmetic industry, in line with the trend of increasing product size and feeling of use, cosmetic compositions with high hardness are increasingly being excluded from the market. Accordingly, the present inventors have come to develop a compound capable of reducing the hardness of a cream-formed oil-in-water composition containing a high content of oil-soluble components such as butter after a long study and a method of use thereof.

The reason for the high hardness of a cosmetic composition containing a high content of oil-soluble components is that crystals are formed due to partial coalescence between oil-soluble ingredients such as butter and coal used by the wax-based surfactant in the composition. This is because it gets bigger and bigger over time. In one embodiment, after identifying the cause of the aging problem, in order to solve this problem, the compound represented by Formula 1 is used together with an emulsifier, and the amount is limited to 3 to 9 times the amount of the emulsifier, and thus, low temperature, such as An oil-in-water type cream formulation that can prevent an increase in hardness even at temperatures of 4°C or less, for example -20°C to 4°C was completed. Since the compound represented by Chemical Formula 1 has a bulky structure, the interfacial film is maintained firmly, thereby preventing the coalescence between oil-soluble components such as butter, thereby reducing the rate of increase in hardness.

When the compound represented by Formula 1 is used together with the emulsifier in the above content range, the emulsion particles can be stabilized to prevent an increase in hardness of the composition.

For example, the compound represented by Formula 1 may be included in an amount of 3.5 times or more, such as 3.5 to 11.5 times, of the emulsifier content. When the compound represented by Formula 1 is included in the content range compared to the emulsifier content, the rate of increase in hardness of the composition over time is further slowed. Furthermore, while solving the problem of increasing the hardness, compatibility with various containers and the high moisturizing effect of oil-soluble components such as butter may not be impaired.

For example, the compound represented by Formula 1 may be included in an amount of 3.8% to 4.6% by weight, such as 3.9% to 4.6% by weight, based on the total amount of the cosmetic composition.

For example, the emulsifier may include glyceryl stearate, glyceryl stearate citrate, C14 to C22 alcohol, C12 to C20 alkyl glucoside, or a combination thereof. For example, the emulsifier may be a mixture of two or more selected from the group consisting of glyceryl stearate, glyceryl stearate citrate, C14 to C22 alcohol and C12 to C20 alkyl glucoside.

For example, the butter may be shea butter.

For example, the butter is 15% to 30% by weight, such as 15% to 25% by weight, such as 20% to 30% by weight, such as 20% to 25% by weight, for example, based on the total amount of the cosmetic composition , It may be included in 25% to 30% by weight.

For example, the oil may include caprylic/capric triglyceride, octyldodecyl myristate, butylene glycol dicaprylate/dicaprate, or a combination thereof.

For example, the water-soluble component may include a neutralizing agent, a polyol, a thickener, or a combination thereof.

The neutralizing agent may include tromethamine, and the like, and may neutralize the pH of the entire composition.

The polyol may be a mixture of glycerin and butylene glycol, but is not limited thereto.

The thickener may be a carbomer, but is not limited thereto.

The water-soluble component may further include purified water, and the purified water may be included in a balance, such as 10% to 90% by weight, such as 30% to 70% by weight, based on the total amount of the oil-in-water cream formulation composition. When the purified water is contained in an amount of less than 10% by weight of the total amount of the water-in-water type cream formulation, the feeling of use is deteriorated due to a small amount of water, and when the purified water is contained in excess of 90% by weight based on the total amount of the oil-in-water type cream formulation composition, The content of water is too high, causing a problem in the blending of other ingredients such as butter and oil.

In addition, the oil-in-water cream formulation composition according to an embodiment may contain an appropriate amount of auxiliary ingredients such as ethanol, extract, functional ingredient, colorant, fragrance, and preservative, which are commonly used in the manufacture of oil-in-water cosmetic. It may be contained in an amount of 0% to 90% by weight based on the total amount of the type cream formulation composition.

Another embodiment provides a cream formulation comprising the oil-in-water cream formulation composition.

The cosmetic has a cream formulation, and basic cosmetic compositions such as lotions, creams, and sunscreens; Cosmetic compositions for hair such as hair essences or hair treatments; It can be widely applied to other pharmaceuticals and quasi-drugs.

Hereinafter, the content of the present invention will be described in more detail through examples and comparative examples. These examples are only presented to understand the contents of the present invention, and the scope of the present invention is not limited to these examples and test examples, and modifications, substitutions, and insertions commonly known in the art can be performed. It can be, and this is also included in the scope of the present invention.

(Example)

Preparation Example: Preparation of an oil-in-water cream formulation

An oil-in-water type cream cosmetic composition was prepared according to the composition in Table 1 below. Specifically, after preparing an oil-in-water emulsion by mixing each raw material according to the composition in Table 1 below, degassing it, and applying a pressure of 3 cycles or more at 1,000 bar using M-110EH-30 Microfluidizer ^® Processor (Microfluidics) A final oil-in-water cream cosmetic composition was prepared.

(Unit: wt%) Example Comparative example One 2 3 4 5 6 One 2 3 Emulsifier GLYCERYL STEARATE 0.9 0.7 0.4 0.2 0.8 0.1 2.2 1.5 1.2 GLYCERYL STEARATE CITRATE 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 C14-22 ALCOHOLS 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 C12-20 ALKYL GLUCOSIDE 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Compound represented by Formula 1-1 (EVONIK) 3.8 4.0 4.3 4.5 3.9 4.6 2.5 3.2 3.5 oil CAPRYLIC/CAPRIC TRIGLYCERIDE 2 2 2 2 2 2 2 2 2 OCTYLDODECYL MYRISTATE 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 BUTYLENE GLYCOL DICAPRYLATE/DICAPRATE 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 butter Shea butter 25 25 25 25 25 25 25 25 25 Water (purified water) To 100 To 100 To 100 To 100 To 100 To 100 To 100 To 100 To 100 corrector Tromethamine 0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35 Polyol glycerine/ Butylene glycol 10 10 10 10 10 10 10 10 10 Thickener Carbomer 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 EDTA 2Na 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 antiseptic 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2

[Formula 1-1]

Test Example 1: Hardness

The hardness of the oil-in-water cream formulations of Examples 1 to 6 and Comparative Examples 1 to 3 prepared in the above Preparation Example was compared and evaluated over time, and the results are shown in Table 2 and FIG. .

(Unit: N) Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Comparative Example 1 Comparative Example 2 Comparative Example 3 Initial (right after manufacturing) 31 28 28 26 27 27 28 30 28 1 week elapsed 29 29 29 28 29 28 32 33 32 2 weeks elapsed 34 33 33 34 32 33 48 39 38 After 4 weeks 49 50 50 51 49 48 51 42 53 8 weeks elapsed 66 64 64 60 64 63 80 76 80 After 16 weeks 78 71 64 63 75 62 115 86 88 After 32 weeks 82 72 65 61 75 62 124 102 90

Test Example 2: Feeling

In order to evaluate the feeling of use of the oil-in-water cream formulations of Examples 1 to 6 and Comparative Examples 1 to 3 prepared in the above Preparation Example, 15 in-house panelists, each of the oil-in-water cream formulations After applying 1.5ml to the whole foil, the degree of feeling of use is quantified (any one from 1 to 10. The higher the number, the more severe the degree of the item. For example, the larger the number, the better the floating property of the composition, the thicker the feeling of thickness. It means that the moisturizing power is high), and the results are shown in Table 3 below.

Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Comparative Example 1 Comparative Example 2 Comparative Example 3 Floating 7 8 9 9 7 8 2 5 6 Thickness 6 7 7 8 6 8 3 5 6 Moisturizing power 7 8 8 9 7 8 6 6 6

As can be seen in Tables 2, 3, and 1, by adding the compound represented by Formula 1 in a specific content range or in a specific content ratio, even in a formulation containing a high content of shea butter, an interfacial film is formed firmly and stably. , It can be seen that it is possible to manufacture a soft, floating, high hardness cream by preventing coalescence between the butter particles. From this, it can be seen that the composition according to the embodiment is very suitable for use in the manufacture of a cream capable of maximizing the high moisturizing effect of shea butter.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the present invention defined in the following claims are also present. It belongs to the scope of the invention.

Claims (9)

Including a compound represented by the following formula (1), emulsifier, butter, oil and water-soluble components,
The compound represented by the following formula (1) is an oil-in-water cream formulation comprising at least three times the content of the emulsifier:
[Formula 1]

In Formula 1,
R ¹ and R ² are each independently a substituted or unsubstituted C11 to C20 alkyl group. In claim 1,
The compound represented by Formula 1 is an oil-in-water cream formulation comprising at least 3.5 times the content of the emulsifier. In claim 1,
The compound represented by Formula 1 is an oil-in-water cream formulation comprising 3.8% by weight to 4.6% by weight based on the total amount of the cosmetic composition. In claim 1,
The emulsifier is glyceryl stearate, glyceryl stearate citrate, C14 to C22 alcohol, C12 to C20 alkyl glucoside, or an oil-in-water cream formulation comprising a combination thereof. In claim 1,
The butter is an oil-in-water cream formulation comprising 20% to 30% by weight based on the total amount of the cosmetic composition. In claim 1,
The oil is caprylic/capric triglyceride, octyldodecyl myristate, butylene glycol dicaprylate/dicaprate, or a combination thereof. In claim 1,
The water-soluble component is an oil-in-water cream formulation comprising a neutralizing agent, a polyol, a thickener, or a combination thereof. In clause 7,
The polyol is a mixture of glycerin and butylene glycol, an oil-in-water cream formulation. A cream-formed cosmetic comprising the oil-in-water cream formulation of any one of claims 1 to 8.

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