KR101503923B1 - Cosmetics composition of O/W type - Google Patents

Abstract

The present invention relates to an underwater-type cosmetic composition, and more particularly, to a cosmetic composition comprising a polyethylene glycol (PEG) -based surfactant such as polyethylene glycol dialkanoate or polypropylene glycol (PPG) (O / W type) cosmetic composition prepared by using polypropylene glycol dialkanoate (PPG Dialkanoate) and a water-dispersible polymer having an alkyl group as a residue.

Since the surfactant contained in the cosmetic composition of the present invention has a molecular weight of 10,000 or less and can interact with the water-dispersible polymer in the emulsion, it is possible to use a small amount of the polymer in comparison with the emulsifying technology using the conventional thickener And it can obtain high hardness. When used on skin, it gives soft feeling, light and comfortable feeling, and it has no stickiness. Moreover, it has excellent temperature stability at high temperature, excellent skin protection effect and high skin safety.

Polyethylene glycol dialkanoate, polypropylene glycol dialkanoate, water-dispersible polymer, aquatic type, skin protection, safety

Description

[0001] The present invention relates to a cosmetic composition of O / W type,

The present invention relates to an underwater-type cosmetic composition, and more particularly, to a composition for underwater-type cosmetic compositions, which comprises polypropylene glycol dialkanoate (PPG Dialkanoate) as a solubilizer of polyethylene glycol dialkanoate or polypropylene glycol It contains a water-dispersible polymer as a residue. It has a high softness when applied to skin even at high hardness, and it is lightweight and comfortable. There is no tackiness. Especially, it has excellent temperature stability at high temperature and minimizes change of discoloration, To an emulsion cosmetic composition.

Generally, emulsions are cosmetics used for the purpose of making skin healthy by supplying moisturizing oil and moisturizing agent to the skin. Specifically, the emulsion is largely classified into various additives such as an oil component such as wax, a high alcohol, a surfactant, oil and the like and a moisturizing agent, a water-dispersible polymer, a skin protecting ingredient, a preservative, And is composed of a water phase component.

The emulsion having the above-mentioned structure should be easy to apply, have a feeling of soft feeling and skin protection function, and should show no change with time such as changing, discoloration and viscosity.

When the content of the wax and the higher alcohol in the above-mentioned components is large, the viscosity of the emulsion becomes high and the association of the oil particles is inhibited, whereby the stability is improved. However, in such a case, the formulation hardens, the feeling of use becomes heavy, and the dripping property is deteriorated, and wax and high-alcohol components are precipitated at a low temperature with time, and stability may be deteriorated. In addition, when the content of wax and higher alcohol is small, good spreadability and low-temperature stability are improved, but viscosity is lowered, resulting in low stability at high temperature and easy separation of oily phase and water phase, resulting in loss of value as a product.

A skin and cosmetic composition using polyethylene glycol distearate corresponding to polyethylene glycol dialkanoate used in the present invention as a surfactant in the above components has been proposed (Korean Patent No. 1994-703175). However, although the cosmetic composition according to this method can emulsify the formulation, it has not been possible to make the viscosity of the formulation, and there has been a problem in that a high content of the water-dispersible thickeners has to be used in order to make it viscous.

In addition to the above-mentioned feeling of use, spreadability and precipitation, the most unstable factors of emulsions known so far include a phenomenon in which a high-grade alcohol forms an excessive lamellar gel phase in the emulsion and gels. Specifically, same.

The term "gelation" means that the component dissolved in the oil phase in the emulsion composed of the oil phase and the water phase gradually dissolves in the water phase according to the distribution coefficient to form an intermolecular structure such as a lamellar structure, Is excessively stiff and hard. As a result of analyzing the components of the gelation, it was revealed that the higher alcohol acts as a main component of the gelation.

Further, in order to solve the above-mentioned problems, a sufficient amount of high-alcohol can not be maintained by reducing the amount of high-alcohol, and researches have been made on materials that can replace high-grade alcohol. For example, raw materials such as water-dispersible polymers such as carbomer, acrylate / C10-30 alkyl acrylate crosspolymer and xanthan gum, glyceryl stearate and polyglyceryl-3-methyl glucose distearate have been studied, Some of them are currently in use. At this time, the carbomer has excellent viscosity and excellent stability compared with the conventional high-grade alcohol. However, there is a phenomenon that the appearance of the emulsion becomes uneven at low temperature due to aging, and when the salt is weak The viscosity drops sharply. In addition, the acrylate / C10-30 alkyl acrylate crosspolymer is relatively strong in the salt and excellent in high-temperature stability over time, but the appearance is uneven at low temperatures and the viscosity formation is weak. In addition, a water-soluble polymer, which is a water-soluble polymer, is used as an aqueous gel using a phage-150 / stearyl alcohol / SMD copolymer and a non-ionic surfactant, PP-26- (Korean Patent Registration No. 10-0588831). However, in order to increase the viscosity of the emulsion according to the above method to 20000 cps or more, the water-dispersible polymer, i.e., the water-containing polymer, is used in an amount of not less than 2.0 wt% There is a problem that it is required to be used in an amount higher than 0.01 to 0.20% by weight of the water-dispersible polymer used. Therefore, the above-described method exhibits a sticky feeling and a feeling of matte feeling when used on the skin. In addition, because of the limited molecular weight of the PEI-150 / stearyl alcohol / SMD copolymer, its behavior in the emulsion is limited and it is impossible to interact with other water-dispersible polymers in the emulsion. In addition, glyceryl stearate and polyglyceryl-3-methyl glucose distearate are excellent in hardness formation, and emulsions appear uniformly at low temperatures over time, but it is necessary to use a larger amount of higher alcohol to form the same level of viscosity So that the feeling of use is heavy and precipitation at a low temperature weakens the stability.

Disclosure of the Invention In order to solve the problems of the prior art as described above, the object of the present invention is to use a specific water-soluble surfactant capable of interacting with a water-dispersible polymer because of its low molecular weight together with the water-dispersible polymer having an alkyl group as a residue, Even if a small amount of the higher alcohol and the general thickening agent are used in a small amount than the conventional one, the viscosity is kept equal to or higher than that of the conventional alcohol, so that gelation does not occur and the feeling of use does not deteriorate and the stability of the emulsion with time is improved at high temperature and low temperature Thereby minimizing the change with time.

The present invention relates to polyethylene glycol dialkanoate or polypropylene glycol dialkanoate,

Water-dispersible polymer having an alkyl group as a residue

≪ RTI ID = 0.0 > a < / RTI >

Hereinafter, the present invention will be described in detail.

The present inventors have made efforts to minimize the gelation phenomenon while enhancing the feeling of use as well as the stability of the formulation. In addition to the water-dispersible polymer, polyethylene glycol dialkanoate or polypropylene glycol surfactant, which is a polyethylene surfactant, When polypropylene glycol dialkanoate is used, the viscosity is increased to inhibit the intergranular association, thereby increasing the stability of the formulation. Accordingly, even if a small amount of the higher alcohol and the general thickener are used in order to increase the viscosity, And the gelation phenomenon with time can be minimized according to the use of a small amount of the higher alcohol and the thickener. Thus, the present invention has been completed.

The water-in-oil type cosmetic composition comprising polyethylene glycol dialkanoate or polypropylene glycol dialkanoate, which is a surfactant of the specific structure of the present invention, and a water-dispersible polymer having an alkyl group as a residue is specifically described below.

The polyethylene glycol dialkanoate or polypropylene glycol dialkanoate is preferably liquid or solid at room temperature and has a weight average molecular weight of 800 to 12000, and is excellent in compatibility with ester oil and general surfactants .

In addition, the dialkanoate present in the molecules of the surfactant may be selected from the group consisting of dihexanoate, dioctanoate, didecanoate, didodecanoate, diimirate, dipalmitate, distearate, diarakoidoate, Dibehenate, diolate, and the like can be used.

In addition, polyethylene glycol dialkanoate or polypropylene glycol dialkanoate has a merit of being soft and feeling comfortable when applied to a product. Such surfactants include caprylyl trimethicone, which is available from Nikkol and Uniquema.

The content of the polyethylene glycol dialkanoate or the polypropylene glycol dialkanoate is 0.01 to 10.0% by weight, preferably 0.05 to 3.0% by weight based on the total amount of the whole cosmetic composition. If the content of the polyethylene glycol dialkanoate or the polypropylene glycol dialkanoate is less than 0.01% by weight, the viscosity of the emulsion is not greatly improved. If the content of the polyethylene glycol dialkanoate or the polypropylene glycol dialkanoate is more than 10% by weight, And the surface active agent is precipitated.

The water-dispersible polymer having the alkyl group as a residue has an alkyl group having 6 to 24 carbon atoms and is easily dispersed in water and functions to increase viscosity and emulsion stability when applied to a product. That is, the water-dispersible polymer affects stability and feeling of use of the emulsion, such as increasing the viscosity of the emulsion to fix emulsion particles and affecting the emulsion adhesion and spreadability. As such a water-dispersible polymer, those having a weight average molecular weight of 10,000 to 20,000 may be used. Examples thereof include carbomer, acrylate / C10-30 alkyl acrylate crosspolymer, acrylate / C12-22 kyl methacrylate copolymer , Ammonium acryloyldimethyltaurate / vp copolymer, ammonium acryloyldimethyltaurate / behenate-25 methacrylate crosspolymer, hydroxyethylcellulose, gellan gum, magnesium aluminum silicate, microcrystalline cellulose, calcium carrageenan , Sodium carrageenan, potassium carrageenan, and the like.

The content of the water-dispersible polymer is 0.001 to 5.0% by weight, preferably 0.01 to 2.0% by weight, based on the total amount of the cosmetic composition, thereby exhibiting excellent wetting performance in use feeling even when the viscosity of the emulsion is increased, The stability of the formulation according to the present invention can be improved, and the gelation phenomenon can be minimized. That is, when the water-dispersible polymer is used in an amount of less than 0.001% by weight, viscosity increase of the emulsion is insufficient, and when the water-dispersible polymer is used in an amount of 5.0% by weight or more, sticky sensation of emulsion is excessively used.

The water-in-oil type cosmetic composition of the present invention may contain a humectant, a high alcohol, an oil, a wax, purified water, various additives, and the like, which are included in ordinary emulsion compositions. Can be used. It is needless to say that the content range of each of the above components can also be used within a usual range.

For example, the wax is a solid component that maintains the appearance of the emulsion, and can be used as candelilla lead, ceresin, carnauba wax, paraffin wax, wood wax, beeswax, microcrystalline wax and the like, , Protects the skin by forming a protective film when used on the skin, and heavily uses the feeling.

The higher alcohol is a solid component having the greatest influence on the viscosity of the emulsion, and cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol and the like can be used, and the viscosity of the emulsion is increased to inhibit the association of oil particles, Thereby improving the stability.

The oil may be a liquid oily component such as castor oil, jojoba oil, squalane, oils extracted from plant and animal products, synthetic ester oil, and silicone oil. In addition, the oil dissolves solid components such as wax and higher alcohol, affects the adhesion and spreadability of the emulsion, and serves as a factor influencing the feel and stability of the emulsion depending on the content and selection of the oil component.

As the moisturizing agent, water-soluble components such as glycerin, butylene glycol, propylene glycol, dipropylene glycol, hyaluronic acid, and betaine can be used. The moisturizing agent enhances the moisturizing ability of the skin and lowers the polarity of the water, so that the wax having a low polarity, the higher alcohol, and the surfactant interact with the water phase to affect the stability of the emulsion.

In addition, the present invention can use various additives such as preservatives, fragrance, etc., which are used in common cosmetic compositions, and the content range thereof is not particularly limited.

In addition, the purified water may be contained in the cosmetic composition of the underwater type as a residual amount to control the final viscosity.

The method for producing the cosmetic composition of the present invention is not particularly limited. For example, a method of mixing a polyethylene glycol distearate and a water-dispersible polymer and adding a moisturizer, a high alcohol, an oil, a wax, purified water and various additives Can be manufactured.

The cosmetic composition of the present invention prepared by the above method has a viscosity of 300 to 40000 cps, which is relatively higher in viscosity than the conventional cosmetic composition, and has a very good feeling of use, and gelation and formulation separation do not occur. In addition, the composition of the present invention is prepared in the form of an emulsion, which includes nutritional lotion, nutritional cream, massage cream, lotion, essence and the like.

As described above, the present invention uses polyethylene glycol dialkanoate or polypropylene glycol dialkanoate, which is a surfactant having a specific structure, and a water-dispersible polymer having an alkyl group as a residue, It exhibits excellent nutritional feeling and softness, has no tackiness, is excellent in viscosity and stability, and has an effect of improving the quality of a product.

Hereinafter, the present invention constructed as described above will be described in more detail with reference to the following embodiments. It is to be understood by those skilled in the art that these embodiments are for explaining the present invention and that the technical scope of the present invention is not limited to these embodiments. In addition, the blending amount is expressed by weight.

Comparative Example  1-9

The cosmetic composition (emulsion) of Comparative Example 1-9 was prepared by a conventional method using the composition components and contents shown in Tables 1 and 2 below.

[Table 1]

Category (% by weight) Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Purified water To 100 to 100 to 100 to 100 to 100 glycerin 5 5 5 5 5 Tree sodium 0.05 0.05 0.05 0.05 0.05 Cetylaryl alcohol 2.5 One One One One Glyceryl stearate SE One One One One One Trioctanoin 2 2 2 2 2 Squalane 2 2 2 2 2 Carbomer - 0.2 - - - Acrylate / C10-30 alkyl acrylate crosspolymer - - 0.2 - - Ammonium acryloyldimethyl taurate / vinyl copolymer - - - 0.2 - Hydroxyethylcellulose - - - - 0.2 Triethanolamine - 0.2 0.2 - - antiseptic q.s q.s q.s q.s q.s incense q.s q.s q.s q.s q.s

[Table 2]

Category (% by weight) Comparative Example 6 Comparative Example 7 Comparative Example 8 Comparative Example 9 Purified water To 100 to 100 to 100 to 100 glycerin 5 5 5 5 Tree sodium 0.05 0.05 0.05 0.05 Cetylaryl alcohol 2.5 One One One Glyceryl stearate SE One One One One Trioctanoin 2 2 2 2 Squalane 2 2 2 2 PEG-150 distearate 0.005 15 - - PPG-17 diolate - - 0.005 15 Acrylate / C10-30 alkyl acrylate crosspolymer 0.2 0.2 0.2 0.2 Triethanolamine 0.2 0.2 0.2 0.2 antiseptic q.s q.s q.s q.s incense q.s q.s q.s q.s

Example  1-8

The cosmetic composition (emulsion) of Examples 1-8 was prepared in a conventional manner using the composition components and contents shown in Tables 3 to 4 below.

[Table 3]

Category (% by weight) Example 1 Example 2 Example 3 Example 4 Purified water to 100 to 100 to 100 to 100 glycerin 5 5 5 5 Tree sodium 0.05 0.05 0.05 0.05 Cetylaryl alcohol One One One One Glyceryl stearate SE One One One One Trioctanoin 2 2 2 2 Squalane 2 2 2 2 PEG-150 distearate One One One One PPG-17 diolate - - - - Carbomer 0.2 - - - Acrylate / C10-30 alkyl acrylate crosspolymer - 0.2 - - Ammonium acryloyldimethyl taurate / vinyl copolymer - - 0.2 - Hydroxyethylcellulose - - - 0.2 Triethanolamine 0.2 0.2 - - antiseptic q.s q.s q.s q.s incense q.s q.s q.s q.s

[Table 4]

Category (% by weight) Example 5 Example 6 Example 7 Example 8 Purified water to 100 to 100 to 100 to 100 glycerin 5 5 5 5 Tree sodium 0.05 0.05 0.05 0.05 Cetylaryl alcohol One One One One Glyceryl stearate SE One One One One Trioctanoin 2 2 2 2 Squalane 2 2 2 2 PEG-150 distearate - - - - PPG-17 diolate One One One One Carbomer 0.2 - - - Acrylate / C10-30 alkyl acrylate crosspolymer - 0.2 - - Ammonium acryloyldimethyl taurate / vinyl copolymer - - 0.2 - Hydroxyethylcellulose - - - 0.2 Triethanolamine 0.2 0.2 - - antiseptic q.s q.s q.s q.s incense q.s q.s q.s q.s

Test Example  One

(Evaluation of viscosity according to addition of PEG-150 distearate)

The viscosities of the cosmetic compositions of Comparative Examples 1-9 and 1-8 were measured and the results are shown in Table 5. At this time, all of the viscosities of the samples were measured at 30 rpm for 1 minute using a Brookfield viscometer with 4 spindles after leaving the samples at 25 DEG C for about 2 hours.

[Table 5]

Viscosity (cps) Comparative Example 1 7200 Comparative Example 2 3600 Comparative Example 3 3300 Comparative Example 4 3580 Comparative Example 5 2820 Comparative Example 6 3280 Comparative Example 7 Can not be measured by precipitation phenomenon Comparative Example 8 3300 Comparative Example 9 Can not be measured by precipitation phenomenon Example 1 6720 Example 2 9600 Example 3 6600 Example 4 5260 Example 5 7100 Example 6 8620 Example 7 5900 Example 8 5040

As shown in Table 5, Comparative Example 2-5 showed a relatively low viscosity. In the case of Comparative Example 1, the content of the cetyl alcohols, which are higher alcohols, had to be increased to show similar viscosity to the present invention. Further, in Comparative Example 6-9, when the content of the phygidisteate or the phopigidioleate was less than 0.01% by weight, the viscosity did not increase, and when it was more than 10% by weight, precipitation occurred. On the other hand, in Examples 1-8 of the present invention, it can be seen that the viscosity is relatively increased by using an appropriate amount of phyjidisteate or phyjidioleate.

Test Example  2: Usability

20 women in their twenties to thirties were used three or more times with the cosmetic compositions of Comparative Examples 1 to 5 and Examples 1 to 4, and evaluated for usability such as feeling of nourishment, softness and stickiness for each composition . The ratio of the number of persons evaluated to be good / the number of persons evaluated to be bad was evaluated according to the following criteria, and the results are shown in Table 6.

- Good ○: (20/0 to 16/4)

- Normal △: (15/5 to 5/15)

- Bad X: (4/16 ~ 0/20)

[Table 6]

Evaluation items Comparative Example Example One 2 3 4 5 One 2 3 4 Nutritional ○ X X △ △ ○ ○ ○ ○ Soft wearing X △ △ X X ○ △ △ ○ Stickiness X X X X X ○ ○ ○ △

Test Example  3: Stability measurement

In order to measure the stability for the discoloration, dehiscence and gelation phenomena of the examples and the comparative examples, the day when the gelation and the formation separation phenomenon started to occur for 3 months at 45 캜 in which gelation and formulation separation were easiest was recorded, Are shown in Table 7 and Figs.

[Table 7]

Evaluation items Comparative Example Example One 2 3 4 5 One 2 3 4 Gelling 60 none none none none none none none none Formulation Separation 70 65 60 70 60 none none none none

As shown in Table 7, Comparative Example 1 exhibited the same level of viscosity as the Examples but gelation occurred (Fig. 1). In Comparative Examples 2 to 5, no gelation occurred, but a form separation phenomenon was observed 2). However, since the composition of Example 1-4 according to the present invention does not exhibit gelation and formulation separation phenomena as in Comparative Example 1-5, it can be seen that the composition is superior in stability to the product of Comparative Example (FIG. 3).

1 is a photograph showing the stability test result of Comparative Example 1. Fig.

2 is a photograph showing the stability test result of Comparative Example 2. Fig.

3 is a photograph showing the stability test result of Example 1 of the present invention.

Claims (7)

Polyethylene glycol dialkanoate or polypropylene glycol dialkanoate, and Water-dispersible polymer having an alkyl group as a residue , ≪ / RTI & The polyethylene glycol dialkanoate or polypropylene glycol dialkanoate is a compound containing a dialkanoate having a weight average molecular weight of 800 to 12000 and a carbon number of 6 to 24, The water-dispersible polymer may be selected from the group consisting of carbomer, acrylate / C10-30 alkyl acrylate crosspolymer, acrylate / C12-22 kyl methacrylate copolymer, xanthan gum, ammonium acryloyldimethyltaurate / At least one selected from the group consisting of roile dimethyltaurate / behenate-25 methacrylate crosspolymer, cellulose gum, gellan gum, microcrystalline cellulose, calcium carrageenan, sodium carrageenan and potassium carrageenan, A cosmetic composition of the water type having a viscosity of 5900 to 40000 cps. The cosmetic composition according to claim 1, wherein the polyethylene glycol dialkanoate or polypropylene glycol dialkanoate contains 0.01 to 10% by weight based on the total amount of the cosmetic composition. delete delete The cosmetic composition according to claim 1, wherein the water-dispersible polymer comprises 0.001 to 5% by weight based on the total amount of the cosmetic composition. The cosmetic composition of claim 1, wherein the cosmetic composition further comprises a moisturizing agent, a higher alcohol, an oil, a wax, an additive, and purified water. delete

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