KR20090118468A - Cosmetics composition of o/w type - Google Patents

Abstract

PURPOSE: A cosmetic composition of oil-in water is provided to ensure softness and comfortable texture on the skin with high safety. CONSTITUTION: A cosmetic composition of oil-in water contains polyethyleneglycol dialkanoate or polypropyleneglycol dialkanoate, and water dispersible polymer with alkyl group. The water dispersible polymer is carbomer, acrylate/C10-30 alkylacrylatecrosspolymer, xanthan gum, ammonium acryloyldimethyltaurate/VP copolymer, ammoniumactyloyldimethyltaurate/beheneth-25 methacrylate crosspolymer, hydroxyethycellulose, cellulose gum, gellan gum, microcrystallinecullulose, calcium carrageenan, sodium carrageeenan or potassium carageenan.

Description

Cosmetic composition of oil-in-water type {Cosmetics composition of O / W type}

The present invention relates to an oil-in-water cosmetic composition, and more specifically, polyethylene glycol dialkanoate or polypropylene glycol (PPG) -based solubilizer, polypropylene glycol dialkanoate and an alkyl group. It contains water-dispersible polymers as residues, which enhances soft texture and light and comfortable feeling even when used at high hardness, and is non-sticky. Especially, it has excellent temperature stability at high temperatures and minimizes changes in discoloration and discoloration with time. It relates to an emulsion cosmetic composition.

In general, emulsions are cosmetics used for the purpose of making skin healthy by supplying oil and moisturizers, which are moisturizing factors. Specifically, the emulsion is mainly composed of oil additives such as waxes, higher alcohols, surfactants, oils, and moisturizers, water-dispersible polymers, skin protection ingredients, preservatives, and fragrances. It is composed of a water phase component.

The emulsion configured as described above should be easy to apply, have a soft feeling of use and protection of the skin, and should not have a change over time such as discoloration, discoloration and viscosity.

When the content of wax and higher alcohol in the constituents is high, the viscosity of the emulsion is increased, and the association of oil particles is inhibited, thereby improving stability. However, in such a case, the formulation becomes hard and the feeling of use becomes heavy, resulting in poor applicability, and wax and higher alcohol components may be precipitated over time at low temperatures, resulting in poor stability. In addition, when the content of wax and higher alcohol is low, the application property is good and low temperature stability is improved, while the viscosity is lowered, the high temperature stability is lowered, and the oil phase and the water phase are easily separated, resulting in the phenomenon of loss of product value.

A skin and cosmetic composition using a polyethylene glycol distearate corresponding to the polyethylene glycol dialkanoate used in the present invention as a surfactant has been proposed (Korean Patent Nos. 199-703175). However, the cosmetic composition according to this method can emulsify the formulation, but it is impossible to make the viscosity of the formulation, there was a problem that a high content of water-dispersible thickener to use to make the viscosity.

In addition to the above-mentioned problems such as usability, spreadability, precipitation, etc., the most representative instability factor of the emulsion so far known is that the higher alcohol is gelled by forming excessive lamellar gel phase in the emulsion. same.

The term "gelling" refers to the amount of the component dissolved in the oil phase in the emulsion consisting of a mixture of the oil phase and the water phase gradually melts in the water phase according to the partition coefficient to form an intermolecular structure such as a lamellar structure and melts in the process of forming a viscosity. This is an excessively hardening phenomenon. As a result of analyzing the components of the gelation, it was found that higher alcohol acts as a major factor of the gelation.

In addition, in order to solve the above problems, it is not possible to maintain a sufficient viscosity by reducing the amount of higher alcohol, and research into a material capable of replacing higher alcohol has been made. For example, water-dispersible polymers such as carbomer, acrylate / C10-30 alkyl acrylate crosspolymer, xanthan gum, and raw materials such as glyceryl stearate and polyglyceryl-3 methylglucose distearate are examined. Some of them are currently in use. In this case, carbomer has excellent viscosity and stability compared with the use of the existing higher alcohol, but it is sticky, and the appearance of the emulsion becomes uneven at low temperatures over time. The viscosity drops sharply. In addition, the acrylate / C 10-30 alkyl acrylate crosspolymer is relatively resistant to salts and has excellent high temperature stability over time, but uneven appearance at low temperatures, and weak viscosity formation. In addition, water gel using water-dispersible polymer and thickening agent, Fiji-150 / stearyl alcohol / SMDI, and Fiji-26-butes-26 / Pig-40 hydrogenated castor oil, which are nonionic surfactants. An emulsion has been proposed (Korean Patent Registration No. 10-0588831). However, in order to increase the viscosity of the emulsion according to the above method to more than 20000 cps, the content of the water-dispersible polymer, Fiji-150 / stearyl alcohol / smdyi copolymer is used in more than 2.0% by weight, in general oil-in-water emulsion There is a problem to be used in a high content compared to 0.01 ~ 0.20% by weight of the water-dispersible polymer used. Thus, the method exhibits a sticky and matt feeling when used on the skin. In addition, Fiji-150 / stearyl alcohol / SM copolymer has a high molecular weight and limited behavior in the emulsion, it is impossible to interact with other water-dispersible polymers in the emulsion. In addition, glyceryl stearate and polyglyceryl-3 methylglucose distearate have excellent hardness and even appearance of the emulsion over time at low temperatures, but higher levels of alcohol can be used to form the same viscosity. The use is heavy, and the stability is weakened, such as precipitation at low temperatures.

In order to solve the problems of the prior art as described above, an object of the present invention is to use a specific water-soluble surfactant that can interact with the water-dispersible polymer because the molecular weight is small and the behavior in the emulsion is free with the water-dispersible polymer having an alkyl group as a residue. Thus, even if a small amount of higher alcohol and a general thickener is used in less than half, the viscosity is maintained at the same or higher level, and gelation does not occur and the feeling of use is not impaired, and the stability of the emulsion with time is improved at high and low temperatures. It is to provide a cosmetic composition of the oil-in-water type to minimize changes over time.

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

Water dispersible polymer having an alkyl group as a residue

It provides an oil-in-water cosmetic composition comprising a.

Hereinafter, the present invention will be described in detail.

The present inventors are trying to minimize the gelation phenomenon while increasing the feeling of use with the formulation stability, while a specific water-soluble surfactant with polyethylene glycol dialkanoate or polypropylene glycol-based surfactant as a specific water-soluble surfactant When polypropylene glycol dialkanoate is used, the viscosity is increased to inhibit the association between particles, resulting in higher formulation stability, and thus higher levels of alcohols and general thickeners used to increase the viscosity of the polypropylene glycol dialkanoate are at the same level as before. The present invention was completed by confirming that the viscosity and formulation stability of the mixture can be minimized, and the gelation phenomenon with time at high temperature can be minimized by using a small amount of higher alcohol and thickener.

The cosmetic composition of the oil-in-water type comprising a water-dispersible polymer having a polyethylene glycol dialk alkalate or polypropylene glycol dialkanoate and an alkyl group as a residue of a specific structure of the present invention as follows.

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 has excellent compatibility with ester oils and general surfactants. .

In addition, the dialkanoate present in the molecule of the surfactant is dihexanoate, dioctanoate, didecanoate, didodecanoate, dimyristate, dipalmitate, distearate, diarachidate, Dialkanoates having 6 to 24 carbon atoms such as dibehenate and dioleate are possible.

In addition, polyethylene glycol dialkanoate or polypropylene glycol dialkanoate has the advantage of providing a light and comfortable feeling with a soft feeling when applied to the product. Such a surfactant can be used as caprylyl trimethicone provided by Nikkol and Uniquema.

The content of the polyethylene glycol dialkanoate or polypropylene glycol dialkanoate is used in an amount of 0.01 to 10.0% by weight, preferably 0.05 to 3.0% by weight based on the total amount of the cosmetic composition. At this time, when the content of the polyethylene glycol dialkanoate or polypropylene glycol dialkanoate is less than 0.01% by weight, it does not help greatly to increase the viscosity of the emulsion, and when it exceeds 10% by weight, the soft appearance is one of the important qualities of the emulsion. This becomes rough and causes the problem of precipitation of the surfactant.

In addition, the water-dispersible polymer having an alkyl group as a residue has an alkyl group having 6 to 24 carbon atoms, is easy to disperse in water, and functions to increase the viscosity and emulsion stability when applied to the product. That is, the water-dispersible polymer increases the viscosity of the emulsion to fix emulsified particles, and affects the stability and usability of the emulsion by affecting the adhesion and spreadability of the emulsion. As the water-dispersible polymer, those having a weight average molecular weight of 10,000 to 20 million may be used. For example, carbomer, acrylate / C10-30 alkyl acrylate crosspolymer, acrylate / C12-22 chel methacrylate copolymer , Ammonium acryloyl dimethyl taurate / VP copolymer, ammonium acryloyl dimethyl taurate / beheneth-25 methacrylate crosspolymer, hydroxyethyl cellulose, gellan gum, magnesium aluminum silicate, microcrystalline cellulose, calcium carrageenan Sodium carrageenan, potassium carrageenan and the like can be used.

The content of the water-dispersible polymer is used in 0.001 to 5.0% by weight, preferably 0.01 to 2.0% by weight based on the total amount of the cosmetic composition, so that even if the viscosity of the emulsion is increased, an excellent soft applicability appears in the feeling of use, and the viscosity rises. According to the formulation stability is improved, and also the gelation phenomenon can be minimized. That is, when the water-dispersible polymer is used at less than 0.001% by weight, the viscosity of the emulsion is insufficient, and when it is used at 5.0% by weight or more, the sticky feeling of the emulsion is excessive and is not suitable as a product.

In addition, the oil-in-water cosmetic composition of the present invention may include a moisturizing agent, higher alcohol, oil, wax, purified water and various additives and the like contained in a conventional emulsion composition, these are selected from those conventional in the art to which the present invention belongs. Can be used. Of course, the content range of each component can also be used within the usual range.

For example, the wax can be used as a solid component to maintain the appearance of the emulsion candelillanab, ceresin, carnauba wax, paraffin, wax, braze, beeswax, microcrystalline lead, etc., to provide a gloss on the cream surface When used on the skin, it forms a protective film to protect the skin and makes it feel heavy.

The higher alcohol may be cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, etc. as a solid component which has the greatest influence on the viscosity of the emulsion, and increases the viscosity of the emulsion to inhibit the association of oil particles to form a formulation. Improves its stability.

In addition, the oil may be a liquid oil component such as castor oil, jojoba oil, squalane, oil extracted from animals and plants and synthetic ester oil, silicone oil. In addition, the oil dissolves solid components such as wax and higher alcohol, and affects the feeling of use and stability of the emulsion according to the selection and content of the oil phase component, such as affecting the adhesion and spreadability of the emulsion.

In addition, the moisturizing agent may be water-soluble components such as glycerin, butylene glycol, propylene glycol, dipropylene glycol, hyaluronic acid, betaine. The moisturizer enhances the skin's moisturizing ability, lowers the polarity of the aqueous phase, and the low polarity wax, higher alcohol, and surfactant interact with the aqueous phase to affect the stability of the emulsion.

In addition, the present invention can be used various additives such as preservatives, fragrances used in conventional cosmetic compositions, the content range is not particularly limited.

In addition, the purified water may be included as a residual amount in the oil-in-water cosmetic composition, to adjust the final viscosity.

The method for producing the oil-in-water cosmetic composition of the present invention is also not particularly limited. For example, polyethylene glycol distearate and a water dispersible polymer are mixed, and a moisturizer, a higher alcohol, an oil, a wax, purified water, and various additives are added. It can manufacture.

The oil-in-water cosmetic composition of the present invention prepared by the above method has a viscosity of 300 to 40000 cps, which is relatively high in viscosity, excellent in use, and does not cause gelation and formulation separation. In addition, the composition of the present invention is prepared in the form of an emulsion, the formulation includes all of nutrient cosmetics, nutrition cream, massage cream, lotion, essence and the like.

As described above, the present invention uses a water-dispersible polymer having an alkyl group and polyethylene glycol dialkanoate or polypropylene glycol dialkanoate, which is a surfactant having a specific structure, in terms of use rather than a conventional emulsion that does not contain it. It has very good nutrition and soft spreadability, no stickiness, and excellent viscosity and stability, which improves product quality.

Hereinafter, the present invention configured as described above will be described in more detail with reference to the following examples. However, these examples are for the purpose of illustrating the present invention, it is apparent to those skilled in the art that the technical scope of the present invention is not limited to these examples. In addition, a compounding quantity is shown based on weight.

Comparative example  1-9

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

TABLE 1

Classification (wt%) 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 Trisodium IDT 0.05 0.05 0.05 0.05 0.05 Cetiaryl alcohol 2.5 One One One One Glyceryl Stearate SE One One One One One Trioctanoine 2 2 2 2 2 Squalane 2 2 2 2 2 Carbomer - 0.2 - - - Acrylate / C10-30 Alkylacrylate Crosspolymer - - 0.2 - - Ammonium Acryloyldimethyl Taureate / V Copolymer - - - 0.2 - Hydroxyethyl cellulose - - - - 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

Classification (wt%) 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 Trisodium IDT 0.05 0.05 0.05 0.05 Cetiaryl alcohol 2.5 One One One Glyceryl Stearate SE One One One One Trioctanoine 2 2 2 2 Squalane 2 2 2 2 PEG-150 distearate 0.005 15 - - PPG-17 Dioleate - - 0.005 15 Acrylate / C10-30 Alkylacrylate 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

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

TABLE 3

Classification (% 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 Trisodium IDT 0.05 0.05 0.05 0.05 Cetiaryl alcohol One One One One Glyceryl Stearate SE One One One One Trioctanoine 2 2 2 2 Squalane 2 2 2 2 PEG-150 distearate One One One One PPG-17 Dioleate - - - - Carbomer 0.2 - - - Acrylate / C10-30 Alkylacrylate Crosspolymer - 0.2 - - Ammonium Acryloyldimethyl Taurate / VP Copolymer - - 0.2 - Hydroxyethyl cellulose - - - 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

Classification (% 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 Trisodium IDT 0.05 0.05 0.05 0.05 Cetiaryl alcohol One One One One Glyceryl Stearate SE One One One One Trioctanoine 2 2 2 2 Squalane 2 2 2 2 PEG-150 distearate - - - - PPG-17 Dioleate One One One One Carbomer 0.2 - - - Acrylate / C10-30 Alkylacrylate Crosspolymer - 0.2 - - Ammonium Acryloyldimethyl Taurate / VP Copolymer - - 0.2 - Hydroxyethyl cellulose - - - 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

(Viscosity Evaluation with Addition of PEG-150 Distearate)

The viscosity of the cosmetic composition of Comparative Example 1-9 and Example 1-8 was measured, and the result is shown in Table 5. At this time, the viscosity was all measured at 1 minute at 30 rpm with 4 spindles using a Brookfield viscometer after leaving the sample at 25 ℃ 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 Measurement not possible due to precipitation Comparative Example 8 3300 Comparative Example 9 Measurement not possible due to precipitation 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 addition, in the case of Comparative Example 1 only showed a similar viscosity to the present application only if the content of higher alcohol cetiaryl alcohol is increased. Also, in Comparative Example 6-9, if the content of sebum distearate to sebum dioleate is lower than 0.01% by weight, there is no increase in viscosity, and if it is higher than 10% by weight, precipitation may occur. 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 sebum distearate to sebum dioleate.

Test Example  2: Usability

Twenty females 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 then the usability of each composition was evaluated for usability such as nutrition, soft spreadability, and stickiness. . The ratio of the number of people who evaluated good / the number of people who evaluated poor was evaluated according to the following criteria, and the results are shown in Table 6.

Good ○: (20/0 to 16/4)

Normal △: (15/5 ~ 5/15)

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

TABLE 6

Evaluation item Comparative example Example One 2 3 4 5 One 2 3 4 Nutrition ○ X X △ △ ○ ○ ○ ○ Soft application X △ △ X X ○ △ △ ○ Sticky X X X X X ○ ○ ○ △

Test Example  3: stability measurement

In order to measure the stability against discoloration, discoloration and gelation of the Examples and Comparative Examples, the day on which gelation and formulation separation began to occur for 3 months at 45 ° C. where gelation and formulation separation were most easily recorded was recorded and the results are shown below. Table 7 and Figures 1-3.

TABLE 7

Evaluation item Comparative example Example One 2 3 4 5 One 2 3 4 Gelation 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 showed the same level of viscosity as in Example, but gelation occurred (FIG. 1). In Comparative Examples 2 to 5, gelation did not occur, but formulation separation occurred ( 2). However, the composition of Example 1-4 according to the present invention can be seen that the gelation and formulation separation as shown in Comparative Example 1-5 is superior in stability than the product of the comparative example (Fig. 3).

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

Figure 2 is a photograph showing the stability test results of Comparative Example 2.

Figure 3 is a photograph showing the stability test results 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 Oil-in-water type cosmetic composition comprising a. The oil-in-water cosmetic composition according to claim 1, wherein the polyethylene glycol dialkanoate or polypropylene glycol dialkanoate is contained in an amount of 0.01 to 10% by weight based on the total amount of the cosmetic composition. The oil-in-water cosmetic composition according to claim 1, wherein the polyethylene glycol dialkanoate or polypropylene glycol dialkanoate is a compound containing dialkanoate having 6 to 24 carbon atoms. The method of claim 1, wherein the water-dispersible polymer is carbomer, acrylate / C10-30 alkyl acrylate crosspolymer, acrylate / C12-22 chel methacrylate copolymer, xanthan gum, ammonium acryloyl dimethyl taurate / V copolymer, ammonium acryloyldimethyl taurate / behennets-25 methacrylate crosspolymer, hydroxyethyl cellulose, cellulose gum, gellan gum, microcrystalline cellulose, calcium carrageenan, sodium carrageenan and potassium carrageenan An oil-in-water cosmetic composition comprising at least one selected. The oil-in-water 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. According to claim 1, wherein the cosmetic composition is an oil-in-water cosmetic composition further comprises a moisturizing agent, higher alcohol, oil, wax, additives and purified water. The oil-in-water cosmetic composition according to claim 1, wherein the cosmetic composition has a viscosity of 300 to 40000 cps.

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