KR102843392B1 - Cosmetic composition and detergent using the same - Google Patents

Abstract

A cosmetic composition comprising a fatty acid, a cationic polymer, a viscosity modifier, a surfactant and a pH modifier, wherein the fatty acid comprises palmitic acid, lauric acid and myristic acid, wherein the palmitic acid is contained in a smaller amount than the lauric acid, the lauric acid is contained in a smaller amount than the myristic acid, and the palmitic acid is contained in a smaller amount than half the amount of the myristic acid, and a detergent manufactured using the same are provided.

Description

Cosmetic composition and detergent using the same {COSMETIC COMPOSITION AND DETERGENT USING THE SAME}

The present invention relates to a cosmetic composition and a cleansing agent manufactured using the same.

The skin generally possesses a defense mechanism that effectively protects against various stimuli it encounters. A prime example is the stratum corneum, the outermost layer of the skin. While effectively blocking external irritants and harmful substances, it also collects various contaminants generated internally, such as sweat and sebum, as well as external dust and dead skin cells, which adhere to the skin's surface in various forms. To remove these contaminants, many cleansing products are used, including foam cleansers, facial cleansers, body cleansers, and body washes. These cleansing products utilize anionic surfactants to remove various contaminants from the skin's surface. However, most cleansing products containing anionic surfactants remove not only contaminants but also substances that protect the skin. Furthermore, while anionic surfactants, such as fatty acid salts, offer excellent cleansing power, their high pH levels can cause skin to feel tight after cleansing.

Additionally, these surfactants are not very irritating to people with normal skin, but they can be very irritating to people with skin conditions such as atopic dermatitis or acne, so their use is limited.

Therefore, attempts have been made to make detergents using only small amounts of anionic surfactants or using only relatively less irritating nonionic surfactants, but detergents using only small amounts of anionic surfactants have significantly reduced cleaning power, and detergents using only nonionic surfactants have significantly reduced foaming power, making them very poor performers as human body cleansers.

Accordingly, in order to realize high foaming properties of a detergent composition using only nonionic surfactants, an alkaline soap-type detergent was developed and is still in use today.

However, cleansing cosmetic compositions with excellent foaming power (regardless of surfactant type) often have a soap-like texture, which can cause skin dryness due to a sticky feeling. Furthermore, their high pH (alkalinity) can cause skin tightness.

Accordingly, after extensive research, the inventors of the present invention have solved the problems of existing soap formulations, such as the sticky feeling and the resulting skin dryness and tightness, by changing the composition of fatty acids, and have developed a cleansing cosmetic composition that can simultaneously implement excellent high-foaming power by using surfactants and viscosity modifiers.

One embodiment is to provide a cleansing cosmetic composition having excellent usability and foaming power.

Another embodiment is to provide a cleansing agent prepared using the above cosmetic composition.

According to one embodiment, a cosmetic composition is provided, which comprises a fatty acid, a cationic polymer, a viscosity modifier, a surfactant, and a pH modifier, wherein the fatty acid comprises palmitic acid, lauric acid, and myristic acid, wherein the palmitic acid is included in a smaller amount than the lauric acid, the lauric acid is included in a smaller amount than the myristic acid, and the palmitic acid is included in a smaller amount than half the amount of the myristic acid.

The above fatty acids may be composed of palmitic acid, lauric acid and myristic acid.

The above fatty acid may be included in an amount of 10% to 20% by weight based on the total amount of the cosmetic composition.

The cationic polymer may comprise polyquaternium-7.

The cationic polymer may further comprise guar hydroxypropyltrimonium chloride.

The above guar hydroxypropyltrimonium chloride and polyquaternium-7 may be included in a weight ratio of 1:2 to 1:6.

The cationic polymer may be included in an amount of 0.5 wt% to 5 wt% based on the total amount of the cosmetic composition.

The above surfactant may include at least one selected from the group consisting of sulfate compounds, sulfosuccinate compounds, or combinations thereof.

The above surfactant may be included in an amount of 10% to 20% by weight based on the total amount of the cosmetic composition.

The viscosity modifier may include lauryl hydroxyl sultaine, disodium cocodiamphoacetate, or a combination thereof.

The viscosity modifier may be included in an amount of 3 wt% to 8 wt% based on the total amount of the cosmetic composition.

The above pH adjusting agent may include KOH.

The pH of the above cosmetic composition may be 9 to 10.

The above cosmetic composition may be a cleanser cosmetic composition.

The above cleanser cosmetic composition may be a facial cleanser cosmetic composition or a body cleanser cosmetic composition.

According to another embodiment, a cleansing agent manufactured using the cosmetic composition is provided.

A cosmetic composition according to one embodiment comprises a fatty acid of a specific composition, a cationic polymer, a viscosity modifier, a surfactant, and a pH modifier, and has excellent cleansing and foaming power, and does not cause skin tightness despite a high pH, so that it has an excellent feeling of use and can provide sufficient moisture to the skin.

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

When a layer, film, region, plate, or other part is referred to herein as being "on top of" another part, this includes not only cases where it is "directly on top of" the other part, but also cases where there are other parts in between. Conversely, when a part is referred to as being "directly on top of" another part, it means that there are no other parts in between.

A cosmetic composition according to an embodiment of the present invention is described below.

Most cleansing cosmetic compositions have a perception that high foaming power is essential for good cleansing power, and thus, market preference inevitably varies depending on whether high foaming power is achieved. However, to date, improving the foaming power of cleansing cosmetic compositions has required that the formulation of the cleanser be limited to a soap formulation and have a high pH for formulation formation, which has been problematic. In the case of soap-type cleansers, although the foaming power itself is excellent, the high pH can cause side effects such as skin tightness, and because it causes a dry feeling, it is very irritating to the skin, and after use, moisture is lost from the skin, making it feel as if there is no moisturizing effect at all.

That is, most of the meat foam cleansers available to date have high pH levels, which inevitably causes side effects such as skin tightness, and the problem of strong skin irritation when used has not been resolved.

Accordingly, in order to solve the above-mentioned side effects or problems, there have been various attempts to add large amounts of polymers and oils to the composition, but in this case, the cleaning power or foaming power is reduced, and the problem arises that all the advantages of conventional foaming detergents are lost.

Developing a cleanser that doesn't cause side effects like skin tightness, is mildly irritating, and simultaneously delivers high foaming power is challenging. High foaming power and formulation require a high pH, but high pH levels can easily lead to a rough feeling with side effects like skin tightness. Therefore, the current reality for cleanser manufacturers is to either sacrifice some level of foaming power to focus on a smoother feel or, conversely, maximize foaming power to mask the rough feeling.

After extensive research on a meat foaming cleanser with a soft feel, the inventors of the present invention have confirmed that a cleanser with both excellent feel and foaming power can be realized by limiting the fatty acids constituting the cosmetic composition to a specific composition, and have developed a cosmetic composition according to one embodiment.

A cosmetic composition according to one embodiment comprises a fatty acid, a cationic polymer, a viscosity modifier, a surfactant and a pH modifier, wherein the fatty acid comprises palmitic acid, lauric acid and myristic acid, wherein the palmitic acid is included in an amount less than the lauric acid, the lauric acid is included in an amount less than the myristic acid, and the palmitic acid is included in an amount less than half the amount of the myristic acid.

For example, the fatty acids may be composed of palmitic acid, lauric acid, and myristic acid.

Since the above three types of fatty acids have the above composition, the cosmetic composition according to one embodiment can have an appropriate viscosity when used as a cleanser, thereby simultaneously realizing a soft feeling of use and high foaming power, and furthermore, can be easily formulated. For example, if only one or two of the above three types of fatty acids are used, a soft feeling of use and high foaming power cannot be simultaneously realized, and even if all three types of fatty acids are used, if the above-mentioned composition is not satisfied, a soft feeling of use and high foaming power cannot be realized, or even if realization is possible to some extent, formulation itself is impossible. Furthermore, a cosmetic composition including a fatty acid having the above composition has excellent pumping power even in a pump container including a pump, so that the contents can be very easily discharged using only the pumping power.

For example, the fatty acid may be included in an amount of 10% to 20% by weight, for example, 10% to 15% by weight, based on the total amount of the cosmetic composition. When the total amount of the fatty acid is included in the above content range, it may be most advantageous in realizing a soft feeling of use and high foaming power.

A cosmetic composition according to one embodiment further comprises a cationic polymer along with the fatty acid composition described above. The cationic polymer further enhances the composition's ability to simultaneously provide a soft feel and high foaming power, and further provides sufficient moisture to the skin, thereby addressing dry skin issues.

For example, the cationic polymer may include polyquaternium-7, guar hydroxypropyltrimonium chloride, or a combination thereof. When polyquaternium-7 and guar hydroxypropyltrimonium chloride are mixed and used as the cationic polymer, a more excellent (soft) feel, high foaming power, and excellent skin moisturizing power can be realized than when polyquaternium-7 or guar hydroxypropyltrimonium chloride is used alone.

More specifically, the cationic polymer may be superior in terms of usability, high foaming power, and skin moisturizing power when using a highly substituted cationic polymer, that is, a cationic polymer with a high degree of substitution of the positive charge of the cationic polymer, that is, a cationic polymer with strong positive characteristics, than when using a cationic polymer with a medium degree or a low degree of substitution. The degree of substitution of the cationic polymer refers to the degree to which the ionicity of the cationic polymer is substituted with a positive charge, and even for the same type of cationic polymer, the degree of substitution can be different by changing the synthesis process. In the present specification, when the degree of substitution of the cationic polymer is greater than 1.6, for example, greater than 1.6 and less than or equal to 2.1, it is classified as a cationic polymer with a high degree of substitution, when the degree of substitution of the cationic polymer is greater than 1.3 and less than or equal to 1.6, it is classified as a cationic polymer with a medium degree of substitution, and when the degree of substitution of the cationic polymer is greater than 1.0 and less than or equal to 1.3, it is classified as a cationic polymer with a low degree of substitution.

For example, the cationic polymer may be polyquaternium-7, guar hydroxypropyltrimonium chloride, or a combination thereof. If the cationic polymer includes polyquaternium-10 instead of polyquaternium-7, a separation phenomenon occurs due to association between the soap formulation having a negative property due to polyquaternium-10 having a relatively large molecular weight and the surfactant described below, which is undesirable in terms of formulation formation.

For example, the compound that can constitute the cationic polymer may have a viscosity (aqueous viscosity) when dissolved in an aqueous solution of 500 cPs to 2000 cPs at room temperature (15°C to 25°C) and a weight average molecular weight of 3000 g/mol or less. The cationic polymer must have an aqueous viscosity and a weight average molecular weight within the above ranges so that the aforementioned separation phenomenon does not occur, which is preferable in terms of formulation formation.

The above guar hydroxypropyltrimonium chloride and polyquaternium-7 may be included in a weight ratio of 1:2 to 1:6. When the above guar hydroxypropyltrimonium chloride and polyquaternium-7 are included in the above weight ratio, it may be suitable for simultaneously realizing a soft feeling of use, high foaming power, and skin moisturizing power.

For example, the cationic polymer may be included in an amount of 0.5 wt% to 5 wt% based on the total amount of the cosmetic composition.

A cosmetic composition according to one embodiment includes a surfactant. By including the surfactant, the cosmetic composition according to one embodiment can easily achieve high foaming power.

For example, the surfactant may include at least one selected from the group consisting of sulfate compounds, sulfosuccinate compounds, or combinations thereof. For example, if a sulfonate compound, rather than a sulfate compound or sulfosuccinate compound, is used as the surfactant, the foaming power may be reduced, which may be undesirable.

Meanwhile, the cosmetic composition according to one embodiment does not include the aforementioned fatty acid salt as the surfactant. Using the aforementioned fatty acid salt as a surfactant is significantly disadvantageous in terms of a smooth feel, and furthermore, the foaming power and rinsability of the final product's cleansing agent may be reduced, and the resulting slippery texture may significantly degrade the feel of the product.

The above surfactant may be included in an amount of 10% to 20% by weight based on the total amount of the cosmetic composition.

A cosmetic composition according to one embodiment includes a viscosity modifier.

The viscosity modifier may include lauryl hydroxyl sultaine, disodium cocodiamphoacetate, or a combination thereof. If a substance other than lauryl hydroxyl sultaine, disodium cocodiamphoacetate, or a combination thereof is used as the viscosity modifier, the viscosity of the cosmetic composition may decrease, which may be undesirable in terms of formulation formation.

The viscosity modifier may be included in an amount of 3 wt% to 8 wt% based on the total amount of the cosmetic composition.

A cosmetic composition according to one embodiment comprises a pH adjusting agent.

The above pH adjusting agent may include KOH, NaOH, tetraethylammonium, alginate, etc., and preferably may include KOH.

The pH of the cosmetic composition may be 9.0 to 10.0. The cosmetic composition according to one embodiment has an alkaline pH of 9.0 to 10.0, and thus has excellent cleansing power, excellent foaming power, almost no dryness after use, and mild skin irritation, and thus, compared to a high-foaming cleanser in the form of a conventional alkaline soap, it exhibits excellent effects in terms of usability and skin moisturizing power. As described above, a technology for allowing a high pH cleansing cosmetic composition to have not only high foaming power but also a soft usability and excellent skin moisturizing power at the same time was a technology that was very difficult to implement in the past.

In addition, the cosmetic composition according to one embodiment may include, in addition to the aforementioned components, components widely known and used by experts in the field as conventional optional components for maintaining basic properties and quality, for example, conditioning agents, pearlizing agents, preservatives, thickeners, fragrances, etc. may be additionally contained, and deionized water, etc. may be contained as a solvent.

The above conditioning agent can be selected from the group consisting of dimethicone base, hydrogenated polydecene, and cationic polymer.

As the above pearlizing agent, glycol distearate, glycol monostearate, fatty acid, etc. can be used.

The above preservatives may include a mixture of methyl parahydroxybenzoate, methylparaben, butylparaben, ethylparaben, propylparaben, benzyl alcohol, phenoxyethanol, phenoxyisopropanol, phenylpropanol, methylchloroisothiazolinone, and methylisothiazolinone.

Additionally, among the ingredients that can be included, pigments can be used without any special restrictions as ingredients used in general cleaning preparations.

A cosmetic composition according to one embodiment may be applied as a cleanser cosmetic composition, such as a facial cleanser cosmetic composition or a body cleanser cosmetic composition, in any formulation that can be used as a detergent, but a soap formulation may be most preferred. In this case, the formulation method is not particularly limited, and general methods known in the relevant field may be used without limitation.

Meanwhile, when the cosmetic composition according to one embodiment is used as an aerosol conditioning composition in the form of a foam, it may further include a propellant, and the propellant may include any propellant that is generally used in aerosol cosmetic compositions in the past.

The following examples illustrate embodiments of the present invention in more detail. However, the following examples are provided for illustrative purposes only and do not limit the scope of the present invention.

Preparation and evaluation of cosmetic compositions

(Evaluation based on fatty acid composition)

Manufacturing Examples 1 to 12 were manufactured with the compositions and contents shown in Table 1 below. The raw materials were sequentially added and stirred until a homogeneous phase was achieved after each addition of the raw materials. The manufacturing methods of the above manufacturing examples were based on methods commonly used in the art. Thereafter, the pH, usability (softness), foaming power, formulation, and pumping power of each composition were evaluated.

pH was measured using an acidity meter (PH-230SD PH meter).

The usability evaluation was conducted through a consumer panel test on 20 women in their 20s and 30s, who used body cleanser cosmetics formulated with the compositions according to Manufacturing Examples 1 to 12 above. The results were evaluated using a 9-point Liker scale, where 9 points were given for very good softness and 1 point was given for very poor softness. The results were averaged and shown in Table 1 below.

Foaming power was evaluated using a Dynamic Foam Analyzer (DFA100, KRUSS, measurement unit cm).

Whether or not a formulation is possible means whether or not the composition according to Manufacturing Examples 1 to 12 can be formulated. If formulation is possible, it is marked with ○, and if formulation is not possible, it is marked with ⅹ.

Pumping power was checked visually by placing the composition according to Manufacturing Examples 1 to 12 in a container having a pump and whether the composition was discharged only by the pumping power without a separate filling gas. If the composition was discharged well with only 1-2 pumpings, it was marked with ◎. If it was discharged after 3-5 or more pumpings, it was marked with ○. If it was not discharged even after 6 or more pumpings, it was marked with ⅹ.

(Unit: weight%) Manufacturing example 1 2 3 4 5 6 7 8 9 10 11 12 purified water To 100 To 100 To 100 To 100 To 100 To 100 To 100 To 100 To 100 To 100 To 100 To 100 EDTA-2Na 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 Lauric Acid 5 - - 5 5 - 5 7 7 5 4.5 4 Myristic Acid - 5 - 7 - 7 7 5 4 5.5 5.5 6 Palmitic acid - - 5 - 1 1 1 1 2 2.5 3 3 KOH 3.1 2.7 2.4 7.0 3.0 4.0 7.9 7.9 7.9 7.9 7.9 7.9 pH 9.8 9.8 9.6 9.6 9.3 9.5 9.6 9.65 9.7 9.56 9.8 9.7 Feel of use 3 7 5 7 4 6 9 - - 9 6 5 Foaming power (cm) 16 17 13 17 17 17 20 17 16 20 15 16 Formulation ○ ○ ○ ○ ○ ○ ○ ⅹ ⅹ ○ ○ ○ Pumping power ○ ○ ○ ○ ○ ○ ◎ ⅹ ⅹ ◎ ⅹ ⅹ

From the above Table 1, it can be confirmed that the fatty acids constituting the cosmetic composition include palmitic acid, lauric acid, and myristic acid, but the palmitic acid is included in a smaller amount than the lauric acid, the lauric acid is included in a smaller amount than the myristic acid, and the palmitic acid is included in a smaller amount than the myristic acid, so that a soft feeling of use, excellent foaming power, formulation, and excellent pumping power can be simultaneously realized.

(Evaluation according to the type of cationic polymer)

Manufacturing Examples 13 to 19 were manufactured with the compositions and contents shown in Table 2 below. The raw materials were sequentially added and stirred until a homogeneous phase was achieved after each addition of the raw materials. The manufacturing methods of the above manufacturing examples were based on methods commonly used in the art. Thereafter, the pH, usability (softness), foaming power, whether or not it was formulated, pumping power, and moisturizing power of each composition were evaluated.

Moisturizing power was evaluated in the same way as the usability evaluation method, and the results are shown in Table 2 below.

(Unit: weight%) Manufacturing example 13 14 15 16 17 18 purified water To 100 To 100 To 100 To 100 To 100 To 100 EDTA-2Na 0.05 0.05 0.05 0.05 0.05 0.05 Lauric Acid 5 5 5 5 5 5 Myristic Acid 7 7 7 7 7 7 Palmitic acid 1 1 1 1 1 1 KOH 7.9 7.9 7.9 7.9 7.9 7.9 polyquaternium-10 0.5 - - - - - Guar Hydroxypropyl Trimonium Chloride - 0.5 - 0.5 0.5 0.5 polyquaternium-7 3.0 3.0 - - 1.0 2.0 pH 9.5 9.6 9.6 9.48 9.72 9.65 Feel of use - 9 6 7 7 8 Foaming power (cm) 15 20 14 15 16 18 Formulation ⅹ ○ ○ ○ ○ ○ pumping power ⅹ ◎ ○ ○ ◎ ◎ Moisturizing power - 9 2 7 8 8

From the above Table 2, it can be confirmed that when guar hydroxypropyltrimonium chloride and polyquaternium-7 are used as cationic polymers, a soft feel, excellent foaming power, formulation, excellent pumping power, and excellent moisturizing power can be achieved simultaneously. In addition, it can be confirmed that when polyquaternium-10 is used as a cationic polymer, separation occurs due to association between the soap and surfactant, which have negative properties due to their large molecular weight, and thus formulation is not well formed.

(Evaluation according to type of viscosity modifier and surfactant)

Manufacturing Examples 20 to 23 were manufactured with the compositions and contents shown in Table 3 below. The raw materials were sequentially added and stirred until a homogeneous phase was achieved after each addition of the raw materials. The manufacturing methods of the above manufacturing examples were based on methods commonly used in the art. Thereafter, the pH, usability (softness), foaming power, whether or not it was formulated, pumping power, and moisturizing power of each composition were evaluated.

(Unit: weight%) Manufacturing example 13 14 15 16 purified water To 100 To 100 To 100 To 100 EDTA-2Na 0.05 0.05 0.05 0.05 Lauric Acid 5 5 5 5 Myristic Acid 7 7 7 7 Palmitic acid 1 1 1 1 KOH 7.9 7.9 7.9 7.9 Guar Hydroxypropyl Trimonium Chloride 0.5 0.5 0.5 0.5 polyquaternium-7 3.0 3.0 3.0 3.0 Sodium laureth sulfate - 15.0 - - Sodium C12-14 olefin sulfonate - - 15.0 - lauryl hydroxyl sultaine 5.0 5.0 5.0 5.0 disodium laureth sulfosuccinate - - - 15.0 Disodium cocodiamphoacetate 1.0 1.0 1.0 1.0 pH 9.8 9.7 9.75 9.73 Feel of use 7 9 5 7 Foaming power (cm) 15 20 14 20 Formulation ○ ○ ○ ○ pumping power ○ ◎ ○ ◎ Moisturizing power 4 7 7 7

From the above Table 3, it can be confirmed that when lauryl hydroxyl sultaine and disodium cocodiamphoacetate are used as viscosity modifiers, and at the same time, a sulfate-based compound or a sulfosuccinate-based compound is used as a surfactant, a soft feel, excellent foaming power, formulation, excellent pumping power, and excellent moisturizing power can be achieved simultaneously.

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 made by those skilled in the art using the basic concept of the present invention defined in the following claims also fall within the scope of the present invention.

Claims (16)

Containing fatty acids, cationic polymers, viscosity modifiers, surfactants and pH modifiers,
The above fatty acids are composed of palmitic acid, lauric acid and myristic acid,
The above palmitic acid is contained in a smaller amount than the above lauric acid,
The above lauric acid is contained in a smaller amount than the above myristic acid,
The above palmitic acid is contained in an amount less than half of the above myristic acid content,
The above fatty acid is included in an amount of 10% to 15% by weight based on the total amount of the cosmetic composition,
A cosmetic composition comprising the cationic polymer and guar hydroxypropyltrimonium chloride and polyquaternium-7 in a weight ratio of 1:2 to 1:6. delete delete delete delete delete In paragraph 1,
A cosmetic composition wherein the cationic polymer is included in an amount of 0.5 wt% to 5 wt% based on the total amount of the cosmetic composition. In paragraph 1,
The cosmetic composition comprising at least one surfactant selected from the group consisting of sulfate-based compounds, sulfosuccinate-based compounds, or a combination thereof is a transparent cosmetic composition. In paragraph 1,
A cosmetic composition wherein the surfactant is contained in an amount of 10% to 20% by weight based on the total amount of the cosmetic composition. In paragraph 1,
A cosmetic composition comprising the viscosity modifier comprising lauryl hydroxyl sultaine, disodium cocodiamphoacetate or a combination thereof. In paragraph 1,
A cosmetic composition wherein the viscosity modifier is contained in an amount of 3% to 8% by weight based on the total amount of the cosmetic composition. In paragraph 1,
A cosmetic composition comprising the pH adjusting agent KOH. In paragraph 1,
A cosmetic composition having a pH of 9 to 10. In paragraph 1,
The above cosmetic composition is a cosmetic composition that is a cleanser cosmetic composition. In Article 14,
The above cleanser cosmetic composition is a cosmetic composition that is a facial cleanser cosmetic composition or a body cleanser cosmetic composition. A detergent manufactured using the cosmetic composition of any one of claims 1 and 7 to 15.