KR102321531B1 - Composition for oil in water emulsion cosmetic with shape memory polymer - Google Patents

Abstract

It relates to an oil-in-water emulsion cosmetic composition comprising a shape memory polymer and a polyol.

Description

Oil-in-water emulsion cosmetic composition comprising a shape memory polymer {Composition for oil in water emulsion cosmetic with shape memory polymer}

It relates to an oil-in-water emulsion cosmetic composition comprising a shape memory polymer.

A state in which one of the two immiscible liquid phases is dispersed in the form of small particles in the other liquid phase is collectively referred to as an emulsion, and generally has a size distribution ranging from several μm to several tens of μm. The emulsion is in a thermodynamically unstable state, and has a tendency to separate such as agglomeration between particles, particle sedimentation, particle growth and coalescence, and creaming. At this time, the stability of the emulsion can be greatly improved by preventing the separation of phases by containing a polymer in the outer box and preventing the movement of particles, or by having the polymer itself have emulsifying power, and In terms of kinetic), there is a method to improve the stability of the emulsion.

In general, cosmetic compositions can be classified into water-in-oil (W/O) and oil-in-water (O/W). On the other hand, the water-in-oil type product has excellent water resistance and adhesion compared to the water-in-water type product, but it is difficult to realize a light and refreshing feeling of use. Therefore, the cosmetic composition of the water-in-oil type emulsion formulation is not favored by consumers because of its feeling of use. In addition, various cosmetics including shape memory polymers have been researched and developed, but they are limited to compositions focusing on shape memory ability.

Under this background, it is required to develop a cosmetic composition that includes a shape-memory polymer and has a shape-memory ability as well as an improved feeling of use, such as viscosity and elasticity.

One aspect is to provide an oil-in-water emulsion cosmetic composition comprising a shape memory polymer.

One aspect provides an oil-in-water emulsion cosmetic composition comprising a shape memory polymer.

As used herein, the term "oil-in-water (O/W)" or "oil-in-water emulsion" refers to any macroscopic image containing a continuous aqueous phase and a fatty phase dispersed in the form of droplets in the aqueous phase. It may mean a homogeneous composition.

As used herein, the term "shape memory polymer" means that when a polymer is manufactured to have a certain shape under specific conditions, even if the shape is changed by an external impact after that, it returns to its original shape when made under the same conditions as the initial state. It may mean a polymer having thin properties. The conditions may be, for example, temperature, light, pH, humidity, and the like. As used herein, the term "shape memory ability" refers to a state in which the original stress is removed by heat, electricity or environmental change after being fixed in a temporary or resting state under a specific temperature and external physical force (stress). means the ability to be relaxed. The shape memory polymer is Rethane-59 (Polyurethane-59), PEG-150/stearyl alcohol/SMDI copolymer (PEG-150/stearyl alcohol/SMDI copolymer), PEG-240/HDI copolymer/bis- Decyltetradeceth-20 ether (PEG-240/HDI copolymer bis-decyltetradeceth-20 ether) or a combination thereof may be used. In one embodiment, the shape memory polymer may be PEG-240/H diicopolymer/bis-decyltetradeceth-20 ether. The 'Polyurethane-59' is a copolymer of ethylhexylglycerin, PEG-240, tetradecyloctadeceth-100 and hexamethylene diisocyanate, and the 'PEG-150/stearyl alcohol/ SMDI copolymer (PEG-150/stearyl alcohol/SMDI copolymer) is a copolymer of PEG-150, saturated methylenediphenyl diisocyanate and stearyl alcohol monomer, and the 'PEG-240/H diicopolymer/bis -Decyltetradeceth-20 ether (PEG-240/HDI copolymer bis-decyltetradeceth-20 ether)' is a copolymer of PEG-240, decyltetradeceth-20 and hexamethylene diisocyanate monomer.

The shape memory polymer is 0.5 to 4% by weight based on the total weight of the composition, for example, 0.6 to 3.5% by weight, for example, 0.7 to 3.5% by weight, for example, 0.8 to 3.5% by weight, 0.9 to 3.5 % by weight, such as 1 to 3.5% by weight, such as 1.1 to 3.5% by weight, such as 1.2 to 3.5% by weight, such as 1.3 to 3.5% by weight, such as 1.4 to 3.5 % by weight, such as 1.5 to 3.5% by weight, such as 0.6 to 3% by weight, such as 0.8 to 3% by weight, such as 1 to 3% by weight, 1.2 to 3% by weight, such as For example, 1.4 to 3% by weight, such as 1.6 to 3% by weight, such as 0.6 to 2.5% by weight, such as 0.8 to 2.5% by weight, such as 1 to 2.5% by weight, such as For example, 1.2 to 2.5% by weight, for example, 1.4 to 2.5% by weight, for example, 1.6 to 2.5% by weight, for example, it may be included in 1.8 to 2.5% by weight. When out of the above range, the content of the shape-memory polymer is too small to indicate a significant shape-memory ability, and the content of the shape-memory polymer is too high and the viscosity is high, which may cause a problem in that the feeling of use is not good.

As used herein, the term "polyol" is an alcohol having a plurality of hydroxyl groups in one molecule, and may include without limitation as long as it is known as a humectant in the art. For example, the polyol is dipropylene glycol, butylene glycol, propanediol, 1,2-hexanediol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol, sorbitol, mannitol , arabitol, xylitol, propylene glycol, ethylene glycol, tetramethylene glycol, diethylene glycol, dipropylene glycol, hexylene glycol, pentylene glycol, pentaerythritol, polyethylene glycol, trimethylol propane, or a combination thereof. In one embodiment, the polyol may be dipropylene glycol, butylene glycol, propanediol, or a combination thereof. In addition, in one embodiment, glycerin, a type of polyol, may inhibit the characteristics of the shape memory polymer, so it may be preferable to exclude glycerin.

The polyol is present in an amount of 3 to 50% by weight, such as 3 to 45% by weight, such as 3 to 40% by weight, such as 3 to 35% by weight, such as 3% by weight, based on the total weight of the composition. to 32% by weight, such as 3 to 30% by weight, such as 3 to 28% by weight, such as 3 to 26% by weight, such as 3 to 24% by weight, such as 3 to 22% by weight, such as 3 to 20% by weight, such as 5 to 30% by weight, such as 5 to 28% by weight, such as 5 to 26% by weight, such as 5 to 24% by weight, such as 5 to 22% by weight, such as 7 to 30% by weight, such as 7 to 28% by weight, such as 7 to 26% by weight, such as 7 to 24% by weight, such as 7 to 22% by weight, such as 9 to 30% by weight, such as 9 to 28% by weight, such as 9 to 26% by weight, such as 9 to 24% by weight, for example, may be included in 9 to 22% by weight. When it is out of the above range, the polyol content is too small to exhibit significant formulation characteristics in fluidity, viscosity and elasticity, etc., and when applied to the skin, agglomeration is severe, which may result in a poor feeling of use. In addition, when out of the above range, the content of the polyol is excessively high, so that it does not exhibit significant formulation characteristics in terms of low spreadability or elasticity, etc., and a problem of a slow drying rate may occur.

The shape memory polymer and the polyol are 1:4 to 1:16 by weight, for example, from 1:4.5 to 1:16 by weight, for example, from 1:5 to 1:16 by weight, for example, from 1:5.5 to 1:16 weight ratio, such as 1:4 to 1:15 weight ratio, such as 1:4.5 to 1:15 weight ratio, such as 1:5 to 1:15 weight ratio, such as 1: 5.5 to 1:15 weight ratio, 1:4 to 1:14 weight ratio, for example 1:4.5 to 1:14 weight ratio, for example 1:5 to 1:14 weight ratio, for example 1:5.5 to It may be included in a weight ratio of 1: 14. When out of the above range, the content of the polyol compared to the content of the shape memory polymer is too small to show a significant effect in spreadability, fluidity, viscosity and elasticity, and the content of the polyol compared to the content of the shape memory polymer is too high to show low spreadability, Therefore, it does not show a significant effect, and there may be a problem that the feeling of use is not good.

The cosmetic composition not only exhibits excellent shape memory ability by appropriately blending a shape memory polymer and a polyol, but also exhibits significantly improved formulation properties in fluidity, spreadability, viscosity and elasticity.

The water-in-oil emulsion cosmetic composition may further add various additives or active ingredients in addition to the shape memory polymer and polyol, respectively, to the oil phase and the aqueous phase. For example, as an oil component, the oily part includes cyclic silicone oils such as cyclopentasiloxane, cyclohexasiloxane, decamethylcyclopentasiloxane, and octamethylcyclopentasiloxane, and volatile oils and vegetable squalane of hydrocarbons having 8 to 20 carbon atoms, Ethylhexyl palmitate, butylene glycol dicaprylate/dicaprate, caprylic/capric triglyceride, triethylhexanoin, diisostearyl malate, polyglyceryl-2 triisostearate, dicapryl Ester oils such as lyl carbonate and isononylisononanoate, silicone oils such as phenyltrimethicone, methyltrimethicone, dimethicone, caprylyl methicone, and diphenylsiloxyphenyltrimethicone, and ozokerite , Ceresin, carnauba wax, candelilla wax, paraffin wax, behenyl alcohol, lecithin, polyhydroxystearic acid, isopropyl myristate, isostearic acid, stearoylinulin, dextrin palmitate, glyceryl behenate / Thickeners such as eicosadioate, disteadimonium hectorite, stearalkonium hectorite, bentonite, silica dimethyl silylate, and acrylate/ethylhexyl acrylate/dimethicone methacrylate copolymer, fatty alcohol, A dispersing agent such as fatty acid or higher alcohol may be used, but is not limited thereto.

In addition, the cosmetic composition may include components commonly used in cosmetic compositions, for example, surfactants, pH adjusters, pigments, fragrances, pigments, preservatives, bactericides, thickeners, antioxidants, stabilizers, solubilizers, Various additives such as metal ion sequestrant, refreshing agent, deodorant, emulsifier, solubilizer, etc. and moisturizing agent, UV absorber, UV scattering agent, vitamins, plant extract, skin astringent, anti-inflammatory agent, cell activator, vasodilator, blood circulation promoter, skin It may include adjuvants such as functional enhancement agents, carriers, and the like, and the formulation and additive components are not limited thereto. In addition, the ingredients may be introduced in an amount generally used in the field of dermatology.

The cosmetic composition is not particularly limited in its formulation, and may include cosmetic composition formulation components commonly used in the technical field to which the invention pertains, depending on the formulation to be prepared. The cosmetic composition may be formulated as, for example, liquid products, lotions, essences, creams, sun lotions, sunscreens, makeup bases, foundations, BB creams, stick products, or balm type products, but is limited thereto. it's not going to be In addition, oil, water, surfactant, humectant, lower alcohol, thickener, chelating agent, preservative, fragrance, etc. may be selected and added according to the formulation to be prepared. In addition, it may include a sunscreen agent, a light scattering agent, and the like, and the formulation and additive components are not limited thereto. In addition, the ingredients may be introduced in an amount generally used in the field of dermatology.

The oil-in-water emulsion cosmetic composition according to an aspect contains a shape memory polymer and a polyol in an appropriate amount or in an appropriate weight ratio, thereby not only having excellent shape memory ability, but also significantly improved formulation properties in fluidity, spreadability, viscosity and elasticity, etc. can represent

1 is a photograph showing a method for evaluating the shape memory ability of a cosmetic composition.
2 is a photograph showing a method for evaluating the elasticity of a cosmetic composition.
3 is a photograph showing a method for evaluating the viscosity of a cosmetic composition.
4 is a view showing the sensory evaluation results for shape memory ability, fluidity, spreadability, viscosity and elasticity according to whether the cosmetic composition of Examples 1 to 3 and Comparative Example 1 contains polyol.
5 is a view showing the sensory evaluation results for shape memory capacity, fluidity, spreadability, viscosity and elasticity according to the content of polyol compared to the content of shape memory polymer of the cosmetic compositions of Examples 4 and 5 and Comparative Examples 2 and 3 .
6 is a view showing the sensory evaluation results for shape memory capacity, fluidity, spreadability, viscosity and elasticity according to the content of the polyol compared to the content of the shape memory polymer of the cosmetic compositions of Examples 6 to 9 and Comparative Example 4.

Hereinafter, preferred examples are presented to help the understanding of the present invention. However, the following examples are only provided for easier understanding of the present invention, and the contents of the present invention are not limited by the following examples.

Examples 1 to 3 and Comparative Example 1. Preparation of a cosmetic composition according to whether polyol is included

Hereinafter, preferred examples are presented to help the understanding of the present invention. However, the following examples are only provided for easier understanding of the present invention, and the contents of the present invention are not limited by the following examples.

Examples 1 to 3 and Comparative Example 1. Preparation of a cosmetic composition according to whether polyol is included

By varying the inclusion of polyol (eg, dipropylene glycol, butylene glycol, propanediol or glycerin), the shape memory polymer of Examples 1 to 3 and Comparative Example 1 (PEG-240/H) A cosmetic composition of an oil-in-water type containing diicopolymer bis-decyltetradeceth-20 ether) was prepared. Table 1 below shows the components and contents (% by weight) of the cosmetic compositions of Examples 1 to 3 and Comparative Example 1.

division ingredient Comparative Example 1 Example 1 Example 2 Example 3 One Purified water to 100 to 100 to 100 to 100 2 Disodium EDIT 0.02 0.02 0.02 0.02 3 dipropylene glycol - - - 13.0 4 Butylene Glycol - - 13.0 - 5 propanediol - 13.0 - - 6 glycerin 13.0 - - - 7 antiseptic appropriate amount appropriate amount appropriate amount appropriate amount 8 PEG-240/HDI Copolymer bis-decyltetradeceth-20 ether 2.00 2.00 2.00 2.00 9 emulsifier 1.50 1.50 1.50 1.50 10 Caprylic/Capric Triglycerides 3.00 3.00 3.00 3.00 11 dimethicone 2.00 2.00 2.00 2.00

Specifically, the aqueous phase raw material and PG-240/H diicopolymer bis-decyltetradeceth-20 ether were weighed in a beaker, and then at a temperature of 75 to 80° C. using a HOMO Mixer at 3000 rpm for 10 minutes. The mixture was uniformly mixed. After the oily raw material is measured in a beaker and uniformly mixed, it is emulsified at a temperature of 70 to 75°C. It was then cooled to prepare a cosmetic composition.

Experimental Example 1. Sensory evaluation of shape memory ability, fluidity, spreadability, viscosity and elasticity according to the presence or absence of polyol

Experimental Example 1. Sensory evaluation of shape memory ability, fluidity, spreadability, viscosity and elasticity according to the presence or absence of polyol

The cosmetic compositions of Examples 1 to 3 and Comparative Example 1 were evaluated for shape memory ability, fluidity, spreadability, viscosity and elasticity. Specifically, the preference for each formulation of the cosmetic compositions of Examples 1 to 3 and Comparative Example 1 was evaluated by a questionnaire consisting of a 5-point scale method. The evaluation criteria are as follows: very good 5 points, good 4 points, moderate 3 points, bad 2 points, very bad 1 point. As shown in FIG. 1 , the shape memory ability was evaluated based on the degree to which the cosmetic was mixed with a spatula and then returned flat to its original state. Fluidity was evaluated based on the degree of flow when the cosmetic contained in the container was poured into another container. As shown in FIG. 2 , the elasticity of the surface of the cosmetic was observed when the surface of the cosmetic was quickly pressed and released with a finger, and a higher score was given as the shape of the finger was maintained and dented. As shown in FIG. 3 , the viscosity was confirmed to the extent that the formulation was stretched without interruption when the cosmetic was slowly taken with a finger, and a higher score was assigned as it stretched longer. Spreadability was confirmed to the extent that when applied to the skin, there was little clumping and spreadability was good.

As a result, as shown in FIG. 4, the cosmetic composition of Comparative Example 1 includes a shape memory polymer and exhibits shape memory ability, but when glycerin is included in the polyol, the evaluation of spreadability, fluidity, viscosity and elasticity, etc. is not good. , it was confirmed that when applied to the skin, clumping was severe and showed a feeling of use with poor spreadability. In contrast, the cosmetic compositions of Examples 1 to 3 not only exhibit excellent shape memory ability by including the shape memory polymer, but also include dipropylene glycol, butylene glycol or propanediol, so that spreadability, fluidity, elasticity and It showed good evaluation results in all areas of viscosity.

From the above results, the cosmetic composition containing dipropylene glycol, butylene glycol or propanediol among the shape memory polymer and polyol can quickly restore its original shape while maintaining excellent shape memory ability, and It was confirmed that it spreads evenly without clumping during application, so that a remarkably improved feeling of use can be exhibited.

Examples 4 and 5, and Comparative Examples 2 and 3. Preparation of cosmetic compositions according to the content of polyol compared to the content of shape memory polymer

By varying the content of polyol (for example, a combination of dipropylene glycol, butylene glycol and propanediol) compared to the content of the shape memory polymer, Examples 4 and 5 and Comparative Examples 2 and 3 of the oil-in-water type A cosmetic composition was prepared. Table 2 below shows the components and contents (% by weight) of the cosmetic compositions of Examples 4 and 5, and Comparative Examples 2 and 3. Specifically, it was prepared in the same manner as in Examples 1 to 3 and Comparative Example 1.

division ingredient Comparative Example 2 Comparative Example 3 Example 4 Example 5 One Purified water to 100 to 100 to 100 to 100 2 Disodium EDIT 0.02 0.02 0.02 0.02 3 dipropylene glycol 4.00 4.00 8.00 15.0 4 Butylene Glycol 3.00 3.00 7.00 10.0 5 propanediol 1.00 1.00 3.00 5.00 6 antiseptic appropriate amount appropriate amount appropriate amount appropriate amount 7 PEG-240/HDI Copolymer bis-decyltetradeceth-20 ether 0.50 2.00 2.00 2.00 8 Ammonium Acryloyl Dimethyl Taurate/Vpicopolymer 1.0 - - - 9 emulsifier 1.50 1.50 1.50 1.50 10 Caprylic/Capric Triglycerides 3.00 3.00 3.00 3.00 11 dimethicone 2.00 2.00 2.00 2.00

Experimental Example 2. Sensory evaluation of shape memory capacity, fluidity, spreadability, viscosity and elasticity according to the content of polyol compared to the content of shape memory polymer

The cosmetic compositions of Examples 4 and 5 and Comparative Examples 2 and 3 were evaluated for shape memory ability, fluidity, spreadability, viscosity and elasticity. Specifically, sensory evaluation was performed using the same 5-point scale method and evaluation criteria as in Experimental Example 1.

As a result, as shown in FIG. 5 , the cosmetic composition of Comparative Example 2 showed little shape memory ability because the content of the shape memory polymer was small, and thus other properties were also poorly evaluated. The cosmetic composition of Comparative Example 3 had a small amount of polyol compared to the content of the shape memory polymer, so it showed shape memory ability, but did not show a significant effect on spreadability, fluidity, viscosity and elasticity.

In contrast, the cosmetic composition of Example 4 contains a shape memory polymer and a polyol in a weight ratio of 1:9 to exhibit excellent shape memory ability, as well as significantly improved formulation properties in all areas of spreadability, fluidity, elasticity and viscosity. was shown. The cosmetic composition of Example 6 also contained a shape memory polymer and a polyol in a weight ratio of 1:15 to exhibit excellent formulation characteristics in shape memory ability, fluidity, viscosity and spreadability, but due to the high polyol content, It exhibited low elasticity compared to the composition.

From the above results, it was confirmed that the cosmetic composition comprising the content of the shape memory polymer and the polyol in an appropriate weight ratio can exhibit significantly improved formulation properties in spreadability, fluidity, elasticity and viscosity while maintaining excellent shape memory ability. .

Examples 6 to 9, and Comparative Example 4. Preparation of a cosmetic composition according to the content of polyol compared to the content of shape memory polymer

By varying the content of polyol (eg, dipropylene glycol, butylene glycol, or propanediol) compared to the content of the shape memory polymer, Examples 6 to 9 and Comparative Example 4 oil-in-water cosmetic compositions were prepared did. Table 3 below shows the components and contents (% by weight) of the cosmetic compositions of Examples 6 to 9 and Comparative Example 4. Specifically, it was prepared in the same manner as in Examples 1 to 3 and Comparative Example 1.

division ingredient Comparative Example 4 Example 6 Example 7 Example 8 Example 9 One Purified water to 100 to 100 to 100 to 100 to 100 2 Disodium EDIT 0.02 0.02 0.02 0.02 0.02 3 dipropylene glycol 3.00 11.0 - - 25.0 4 Butylene Glycol - - 17.0 - - 5 propanediol - - - 17.0 - 6 antiseptic appropriate amount appropriate amount appropriate amount appropriate amount appropriate amount 7 PEG-240/HDI Copolymer bis-decyltetradeceth-20 ether 1.80 1.80 1.80 1.80 1.80 8 emulsifier 1.50 1.50 1.50 1.50 1.50 9 Caprylic/Capric Triglycerides 3.00 3.00 3.00 3.00 3.00 10 dimethicone 2.00 2.00 2.00 2.00 2.00

Experimental Example 3. Sensory evaluation of shape memory capacity, fluidity, spreadability, viscosity and elasticity according to the content of polyol compared to the content of shape memory polymer

The cosmetic compositions of Examples 6 to 9 and Comparative Example 4 were evaluated for shape memory ability, fluidity, spreadability, viscosity and elasticity. Specifically, sensory evaluation was performed using the same 5-point scale method and evaluation criteria as in Experimental Example 1.

As a result, as shown in FIG. 6 , the cosmetic composition of Comparative Example 4 contained the shape memory polymer in an appropriate amount, so it showed shape memory ability, but the content of polyol compared to the content of the shape memory polymer was small, so spreadability, fluidity, There was no significant effect on viscosity and elasticity.

On the other hand, the cosmetic compositions of Examples 6 to 8 include an appropriate weight ratio of the content of the polyol to the content of the shape memory polymer, thereby exhibiting excellent shape memory ability, and remarkably improved in all areas of spreadability, fluidity, elasticity and viscosity The formulation characteristics were shown. The cosmetic composition of Example 9 also exhibited excellent formulation characteristics in shape memory ability, fluidity, viscosity, and spreadability, but exhibited lower elasticity compared to the composition of Example 4 due to the high polyol content.

From the above results, the cosmetic composition comprising the content of the shape memory polymer and the polyol in a weight ratio of about 1:6 to about 1:14 is a formulation with significantly improved spreadability, fluidity, elasticity and viscosity while maintaining excellent shape memory ability. It was confirmed that it can exhibit negative characteristics.

The description of the present invention described above is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

Claims (6)

As an oil-in-water emulsion cosmetic composition comprising a shape memory polymer and a polyol,
The polyol includes dipropylene glycol and excludes glycerin,
The cosmetic composition comprising the shape memory polymer and the polyol in a weight ratio of 1:6 to 1:14. The cosmetic composition of claim 1, wherein the shape memory polymer is included in an amount of 0.6 to 3.5% by weight based on the total weight of the composition. The cosmetic composition according to claim 1, wherein the polyol is included in an amount of 3 to 40% by weight based on the total weight of the composition. delete The method according to claim 1, wherein the shape memory polymer is polyurethane-59 (Polyurethane-59), PEG-150/stearyl alcohol/SMDI copolymer (PEG-150/stearyl alcohol/SMDI copolymer), PEG-240/H A cosmetic composition which is a diicopolymer/bis-decyltetradeceth-20 ether (PEG-240/HDI copolymer bis-decyltetradeceth-20 ether) or a combination thereof. The method according to claim 1, wherein the polyol is butylene glycol, propanediol, 1,2-hexanediol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol, sorbitol, mannitol, arabitol, xylitol , propylene glycol, ethylene glycol, tetramethylene glycol, diethylene glycol, hexylene glycol, pentylene glycol, pentaerythritol, polyethylene glycol, trimethylol propane, or a cosmetic composition comprising a combination thereof.

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