KR102429536B1 - Thermostability suspension cosmetic composition - Google Patents

Abstract

The present invention relates to a thermally stable suspension cosmetic composition, and more particularly, to a suspension cosmetic composition capable of generating thermally stable micelles capable of maintaining shape at high temperatures, including a nonionic surfactant, a solubilizer and a terpene-based alcohol, and the It relates to a suspension cosmetic that is stable at high temperature comprising a cosmetic composition.

Description

Thermostable suspension cosmetic composition

The present invention relates to a thermally stable suspension cosmetic composition, and more particularly, to a suspension cosmetic composition capable of generating thermally stable micelles capable of maintaining shape at high temperatures, including a nonionic surfactant, a solubilizer and a terpene-based alcohol, and the It relates to a suspension cosmetic that is stable at high temperature comprising a cosmetic composition.

As living standards increase and life expectancy increases, the desire to be young and beautiful is increasing, and various products are being developed. In particular, as interest in skin care increases in modern times, the demand for skin care for self-management is also increasing. Skin care toners, emulsions, essences, etc. for the purpose of moisturizing the skin are composed of water-soluble and oil-soluble components, and a small amount of amphiphilic substances such as nonionic surfactants are used for the purpose of uniformly emulsifying them.

In general, surfactants are used for solubilization to uniformly dissolve poorly soluble substances that are not soluble in water (solvent). When the concentration of the surfactant exceeds cmc, the poorly soluble substance is blown into the micelles and dissolved to effect solubilization. By putting the system in such a solubilized state, thermodynamic stability can be imparted to the composition. In particular, in cosmetics, in the preparation of aqueous-based cosmetics such as transparent lotions or cosmetic liquids, EO or PO addition-type bismuths are used for the purpose of solubilizing perfumes, such as perfumes, consisting of esters, aldehydes, ketones, alcohols, ethers, phenols, and lactones in aqueous solvents. An appropriate amount of an ionic surfactant is formulated as a solubilizer.

On the other hand, in recent years, silicone oil having high safety, various properties, and excellent feeling of use has been widely used in cosmetics as a solubilizer. In International Publication No. WO2004-091562, as a cosmetic composition for implementing suspension, a carboxy-modified silicone oil in which a carboxyl group is modified on a dimethylpolysiloxane chain that exhibits high chemical reactivity and adsorption among the silicone oils is used as a solubilizing agent It is disclosed. . In addition, Japanese Patent Publication No. 3484300 discloses a configuration in which a polyether-modified silicone in which a polyoxyethylene group is modified on a dimethylpolysiloxane chain exhibiting high emulsion stability as a cosmetic composition uses silicone oil as a solubilizer. However, in the case of the suspension formulation prepared through the prior art, the difference in the degree of suspension frequently occurs depending on the temperature conditions in the manufacturing process of the cosmetic, and in particular, the thermodynamic energy of micelles exhibiting suspendability by being included in the cosmetic at a temperature above room temperature. As the value increases, the suspension decreases due to an irreversible phenomenon in which the micelles are decomposed and rearranged to a small size by a stabilization mechanism, making it difficult to manufacture cosmetics of homogeneous quality.

International Publication No. WO2004-091562 Japanese Patent Publication No. 3484300

The present invention is to solve the problems of the prior art as described above, including a nonionic lipophilic surfactant and a nonionic hydrophilic surfactant as a solubilizer, and including a terpene-based alcohol in the composition, Provided are a thermally stable suspension cosmetic composition capable of generating micelles in a stable state capable of maintaining shape and size in a high temperature environment for a long time, and a suspension cosmetic in a stable state capable of maintaining suspension at high temperatures, including the cosmetic composition.

The present invention relates to a thermally stable suspension cosmetic composition comprising a nonionic surfactant having a hydrophile-lipophile balance (HLB) of 3 to 7, a solubilizer having an HLB of 10 to 16, and a terpene-based alcohol.

In the present invention, the nonionic surfactant may include a sorbitan ester-based compound.

In the present invention, the solubilizing agent may include an aliphatic triglyceride-based compound in which 40 to 80 moles of ethylene oxide are added.

In the present invention, the terpene-based alcohol may include at least one selected from the group consisting of terpineol, geraniol, linalool, rhodinol, nerol, nerolidol, farnesol, and menthol.

In the present invention, the nonionic surfactant: the solubilizer may be included in a weight ratio of 1: 0.5 to 1.

In the present invention, the total content of the nonionic surfactant and the solubilizer may be included in an amount of 0.1 to 10% by weight based on the total composition.

In the present invention, the terpene-based alcohol may be included in an amount of 0.05 to 5% by weight based on the total composition.

The present invention may include a suspension cosmetic comprising the thermally stable suspension cosmetic composition.

The thermally stable suspension cosmetic composition of the present invention includes a nonionic lipophilic surfactant capable of obtaining a stable suspension degree without deviation depending on the manufacturing process conditions, and includes a nonionic hydrophilic surfactant as a solubilizer, and a terpene-based alcohol, By generating the nonionic lipophilic surfactant-nonionic hydrophilic surfactant micelles in which the terpene-based alcohol crystals are present inside the hydrophobicity, a suspension cosmetic in a stable state that can maintain suspension even when stored for a long time in a high temperature environment can be prepared. possible effects can be obtained.

Hereinafter, the thermally stable suspension cosmetic composition of the present invention will be described in detail. The embodiments introduced below are provided as examples so that the spirit of the present invention can be sufficiently conveyed to those skilled in the art. In addition, unless there are other definitions in the technical terms and scientific terms used, it has the meaning commonly understood by those of ordinary skill in the art to which this invention belongs, and in the following description, it may unnecessarily obscure the subject matter of the present invention. Descriptions of possible known functions and configurations will be omitted.

The present invention relates to a thermally stable suspension cosmetic composition capable of maintaining suspension even when stored for a long time in a high temperature environment, and more particularly, to a nonionic lipophilic surfactant having a hydrophile-lipophile balance (HLB) of 3 to 7 (hereinafter referred to as B.E.). It relates to a thermally stable suspension cosmetic composition comprising an ionic surfactant), a hydrophilic solubilizer having an HLB of 10 to 16, and a terpene-based alcohol.

The nonionic surfactant included in the cosmetic composition of the present invention has a hydrophile-lipophile balance (HLB) of 3 to 7 polysorbate, sorbitan ester, polyoxyethylene fatty acid ester ( polyoxyethylene fatty acid ester, polyethylene glycol ether, polyethylene glycol ester, glycerol ester, glyceride and sucrose ester compounds It may include one or more compounds selected from the group consisting of, for example, ethylene glycol stearate, sorbitan sesquioleate, glyceryl stearate, sorbitan. sorbitan oleate, sorbitan monostearate, sorbitan isostearate, steareth-2, oleth-2, glyceryl laurel glyceryl laurate, ceteth-2, polyethylene glycol-30 dipolyhydroxystearate, sucrose cocoate, polyethylene glycol-4 dilaurate ( PEG-4 dilaurate) and methylglucose sesquistearate may include one or more compounds selected from the group consisting of. In the present invention, the nonionic surfactant may include a sorbitan ester-based compound, and specifically, sorbitan sesquioleate, sorbitan oleate, sorbitan monostearate, and sorbitan isostearate. It may include one or more compounds selected from, etc., but is not particularly limited thereto.

In addition, as the solubilizing agent included in the cosmetic composition of the present invention, a nonionic surfactant having hydrophilicity may be used, and the solubilizing agent is a polysorbate having a hydrophile-lipophile balance (HLB) of 10 to 16; glycosides. Polyoxyethylene fatty acid ester, fatty acid amide, polyethylene glycol ester, glycerol ester, glyceride compound, etc. may include one or more compounds selected from the group, specifically polyethylene glycol-7 glyceryl cocoate (PEG-7 glyceryl cocoate), polyethylene glycol-20 almond glyceride (PEG-20 almond glyceride), polyethylene glycol- 60 almond glyceride, polyethylene glycol-25 hydrogenated castor oil, polyethylene glycol-60 hydrogenated castor oil, stearamide (stearamide), polyethylene glycol-100 stearate (PEG-100 stearate), polysorbate 85 (polysorbate 85), polysorbate 80 (polysorbate 80), polysorbate 60 (polysorbate 60), polyethylene glycol-7 olivate (PEG-7 olivate), cetearyl glucoside, polyethylene glycol-8 oleate (PEG-8 oleate), oleth-10 (oleth-10), oleth-20, ceteth-10, ceteth-20, polyethylene glycol-8 laurate, cocamide, isosteareth-20, It may include one or more compounds selected from the group consisting of ceteareth-20, steareth-20, and steareth-21. More preferably, the solubilizer of the present invention is an aliphatic triglyceride in which 40 to 80 moles of ethylene oxide such as polyethylene glycol-25 hydrogenated castor oil and polyethylene glycol-60 hydrogenated castor oil are added among the compounds. It may include a compound, but is not particularly limited thereto.

The nonionic surfactant and the solubilizing agent are included together in the cosmetic composition of the present invention, so that a hydrophobic group exists therein and a large-sized micelle having a particle diameter of 100 to 1,000 micrometers can be formed, and the formed micelles Suspension may occur.

In the present invention, the terpene-based alcohol is a crystalline compound located inside the hydrophobic group of micelles formed by the combination of the nonionic surfactant and the solubilizing agent, terpineol, geraniol, linalo It may include at least one selected from the group consisting of linalool, rhodinol, nerol, nerolidol, farnesol and menthol, but is limited thereto not.

In the present invention, since the terpene-based alcohol is located inside the hydrophobic group of the formed micelles, the activation energy required for the stabilization mechanism can be increased by preventing the occurrence of a decomposition reaction according to the molecular rearrangement of the micelles in an unstable state. Even when micelles are exposed to a high-temperature environment for a long time and become unstable with high energy, the irreversible decomposition (rearrangement) reaction of micelles due to the stabilization mechanism hardly occurs, resulting in suspension at high temperatures during the cosmetic manufacturing process and storage. It is preferable because the effect does not decrease and it is possible to obtain the effect of producing a cosmetic having a uniform and stable degree of suspension.

The nonionic surfactant forming micelles in the present invention: the solubilizer may be included in a weight ratio of 1: 0.5 to 1, preferably 1: 0.6 to 0.75 by weight. The content ratio of the nonionic surfactant and the solubilizing agent is not particularly limited thereto, but it is preferable because the micelles in a stable state can be efficiently prepared having a large particle size capable of exhibiting suspension when the above ranges are satisfied.

In addition, the total content of the nonionic surfactant and the solubilizer in the present invention may be included in an amount of 0.1 to 10% by weight, preferably 0.5 to 5% by weight, more preferably 1 to 3% by weight based on the total composition. The total content range of the nonionic surfactant and the solubilizer is also not particularly limited thereto, but when the above range is satisfied, an appropriate level of suspension that a suspended cosmetic should have can be realized, and the feel of the prepared suspension cosmetic is very excellent. good to be able to get

In addition, in the present invention, the terpene-based alcohol may be included in an amount of 0.05 to 5% by weight, preferably 0.1 to 3% by weight, based on the total composition. The content range of the terpene-based alcohol is not particularly limited thereto, but when the above range is satisfied, in the process of forming micelles by combining the nonionic surfactant and the solubilizer of the present invention, the terpene-based alcohol is present in the internal hydrophobic group. It is preferable that the formation efficiency of micelles is maximized.

The present invention may include a suspension cosmetic comprising the thermally stable suspension cosmetic composition, and the suspension cosmetic may include, in addition to a suspended lotion and a cosmetic liquid for skin care, a sunscreen, a suntan agent, a cleaning agent, a pack, and a foundation. However, it is not particularly limited thereto. In addition, the method for formulating the suspension cosmetic is not particularly limited, and general methods known in this field may be used without limitation.

The suspension cosmetic of the present invention includes a moisturizing agent, antioxidant, chelating agent, stabilizer, pigment, vitamin, ultraviolet absorber, bactericide, anti-inflammatory agent, It may further contain ingredients commonly used in cosmetic compositions such as preservatives, plant extracts and pharmaceuticals.

Hereinafter, preferred examples are presented to help the understanding of the present invention. However, the following examples are provided for easier understanding of the present invention, and the content of the present invention is not limited by the examples, and various other modifications and changes may be made.

First, the method of the experiment conducted in the present invention is presented.

At this time, the word “test substance” used in the following experiments 1) to 2) is used as a word meaning 'suspension skin prepared in Examples 1 to 7' or 'suspension skin prepared in Comparative Examples 1 to 4'. became

Experiment 1) Measurement of the size of micelles according to temperature conditions

After storing the test materials of Examples 1 to 7 and Comparative Examples 1 to 4 at -10 °C, 25 °C, and 60 °C for 2 weeks, respectively, the average micelle size present in each test material was measured by Malvern instrument's Zetasizer Nano ZS (Dynamic Light Scattering; hereinafter DLS) was measured.

Experiment 2) Measurement/observation of suspension of test substance according to temperature conditions

After the test materials of Examples 1 to 7 and Comparative Examples 1 to 4 were stored at 60 ° C. for 2 weeks, the suspension indicated by each test material was measured through HANA Instrument HI98703 (Turbidimeter, Spec (0.1-1000 NTU)) did.

[Example 1]

In a flask, 0.80 g of sorbitan sesquioleate as a nonionic surfactant, 0.60 g of PEG-60 hydrogenated castor oil as a solubilizer, 0.3 g of l-menthol as a terpene alcohol, 1,3-butylene glycol 8.0 g, ethanol 7.0 g, phenoxyethanol 0.30 g, ethylhexyl glycerin 0.05 g as a moisturizing agent, EDTA-2Na 0.02 g as a chelating agent, and 0.10 g fragrance were added, and purified water was added to the flask so that the total content of the cosmetic composition was 100 g. A suspension skin was prepared by blending after addition.

[Example 2]

A suspension skin was prepared in the same manner as in Example 1, except that 1.60 g of sorbitan sesquioleate and 0.90 g of PEG-60 hydrogenated castor oil were added.

[Example 3]

A suspension skin was prepared in the same manner as in Example 1, except that 0.88 g of sorbitan sesquioleate and 0.52 g of PEG-60 hydrogenated castor oil were added.

[Example 4]

A suspension skin was prepared in the same manner as in Example 1, except that 0.78 g of sorbitan sesquioleate and 0.62 g of PEG-60 hydrogenated castor oil were added.

[Example 5]

A suspension skin was prepared in the same manner as in Example 1, except that 0.74 g of sorbitan sesquioleate and 0.66 g of PEG-60 hydrogenated castor oil were added.

[Example 6]

A suspension skin was prepared in the same manner as in Example 1, except that 0.05 g of 1-menthol was added.

[Example 7]

A suspension skin was prepared in the same manner as in Example 1, except that 3 g of l-menthol was added.

[Comparative Example 1]

A suspension skin was prepared in the same manner as in Example 1, except that 1 g of sorbitan sesquioleate and 0.4 g of PEG-60 hydrogenated castor oil were added.

[Comparative Example 2]

A suspension skin was prepared in the same manner as in Example 1, except that 0.67 g of sorbitan sesquioleate and 0.73 g of PEG-60 hydrogenated castor oil were added.

[Comparative Example 3]

A suspension skin was prepared in the same manner as in Example 1, except for adding 0.01 g of 1-menthol.

[Comparative Example 4]

A suspension skin was prepared in the same manner as in Example 1, except that 0.03 g of l-menthol was added.

The results of measuring the size of micelles present in the cosmetic according to the temperature conditions of Examples 1 to 7 and Comparative Examples 1 to 4 by the method of Experiment 1 and Experiment 2 are shown in Table 1 below, Examples 1 to 7 And Comparative Examples 1 to 4 are shown in Table 2 below the results of measuring the degree of suspension shown in the cosmetics.

micelle size [nm]
(dispersity, [%]) -10 ℃ 25 ℃ 60 ℃ Example 1 145.8
(0.126) 152.8
(0.116) 134.8
(0.104) Example 2 266.4
(0.170) 286.8
(0.150) 267.8
(0.140) Example 3 140.4
(0.154) 141.0
(0.165) 139.2
(0.155) Example 4 167.2
(0.118) 175.4
(0.120) 177.4
(0.121) Example 5 155.1
(0.204) 185.3
(0.120) 170.3
(0.119) Example 6 150.1
(0.107) 150.1
(0.107) 140.1
(0.107) Example 7 147.2
(0.103) 142.7
(0.093) 140.7
(0.090) Comparative Example 1 84.22
(0.171) 323.8
(0.155) 22.13
(0.084) Comparative Example 2 67.08
(0.492) 66.65
(0.184) 15.01
(0.070) Comparative Example 3 85.65
(0.171) 86.48
(0.154) 16.04
(0.071) Comparative Example 4 82.05
(0.168) 84.22
(0.149) 24.55
(0.099)

suspension
[NTU] Example 1 604 Example 2 1000 Example 3 637 Example 4 583 Example 5 562 Example 6 600 Example 7 658 Comparative Example 1 Spec-over Comparative Example 2 381 Comparative Example 3 435 Comparative Example 4 472

Through the results of Table 1, in the case of the suspension cosmetic prepared according to Examples 1 to 7 of the present invention, the size of micelles present in the cosmetic does not change significantly even when stored for a long time at room temperature as well as low or high temperature, room temperature It can be seen that the suspension can be maintained even if the cosmetic prepared in In particular, at a temperature of 60° C., compared to the result that the size of micelles present in the cosmetics of Comparative Examples 1 to 4 decreased by 70 to 81%, the micelles in the cosmetics of Examples 1 to 7 according to the present invention were maintained at high temperature for a long time. It can be seen that it shows a very stable state even when stored, and accordingly, it can be seen that the suspension of the cosmetic can also be stably maintained.

In addition, through the results of Example 1 and Comparative Examples 1 and 2 in Table 2 above, when the nonionic surfactant and the solubilizer included in the cosmetic composition of the present invention satisfy a weight ratio of 1:0.5 to 1, the manufactured cosmetic is 60 Even after storage at a temperature of ℃ for 2 weeks, it exhibits a degree of suspension of 550 NTU or more, confirming that it can represent a degree of suspension suitable for use as a suspension cosmetic, but the content ratio of the nonionic surfactant and the solubilizer does not satisfy the above range. In this case, it can be seen that the prepared cosmetic exhibits a low suspension of 500 NTU or less, and particularly, when stored at a high temperature, the suspension is further reduced, resulting in transparency.

Claims (8)

A nonionic surfactant having an HLB of 3 to 7, including a sorbitan ester compound,
A solubilizer having an HLB of 10 to 16 comprising an aliphatic triglyceride-based compound to which 40 to 80 moles of ethylene oxide is added, and
Terpene alcohol containing menthol
including,
The nonionic surfactant: the solubilizer is included in a weight ratio of 1: 0.5 to 1,
The terpene-based alcohol is a thermally stable suspension cosmetic composition comprising 0.05 to 3% by weight based on the total composition.
delete delete delete delete According to claim 1,
The total content of the nonionic surfactant and the solubilizer is a thermally stable suspension cosmetic composition that is included in an amount of 0.1 to 10% by weight based on the total composition.
delete A suspension cosmetic comprising the thermally stable suspension cosmetic composition according to any one of claims 1 and 6.