KR101534175B1 - Elastic cosmetic composition with low acid condition - Google Patents

Abstract

The present invention relates to a weakly acidic cosmetic composition having elasticity, and more particularly, to a weakly acidic cosmetic composition characterized by containing pectin, divalent cation and fatty acid. The weakly acidic cosmetic composition using the pectin of the present invention shows a good viscosity and rheological characteristic excellent in feeling even under a weak acid condition and is a new form of cosmetic imparting elasticity. It is similar to skin pH, has excellent skin affinity, It can give sensual fun.

Weak acidity, elasticity, emulsion, pectin, divalent cation, fatty acid, skin pH

Description

TECHNICAL FIELD [0001] The present invention relates to a cosmetic composition having an elasticity,

TECHNICAL FIELD The present invention relates to a weakly acidic cosmetic composition having elasticity, and relates to a cosmetic composition which can maintain elasticity of a product even under a mild acid condition similar to that of a skin surface, and is excellent in feeling of use.

In normal circumstances, the skin surface maintains a weak acidity of about pH 4-6. The weakly acidic stratum corneum has antimicrobial activity against microorganisms and maintains homeostasis of skin barrier. Therefore, the skin requires a weakly acidic cosmetic material having a similar pH to maintain an appropriate pH. In other words, in the cosmetics industry, emulsifying technology having an attractive feel and viscosity is required even in a slightly acidic condition. However, most of the synthetic thickeners are less stable and less stable under slightly acidic conditions. Therefore, in the case of weakly acidic cosmetics, it is difficult to manufacture a cosmetic having a stable and suitable viscosity as a conventional incremental agent, and development of a new system is required.

Conventional techniques for producing a cosmetic composition under slightly acidic conditions include a method of mixing a weakly acidic aqueous solution or an extract, a method of adding minerals, or a method of mixing silicate clay minerals. However, this is a limitation that can be applied only to viscous lotions.

Therefore, it is necessary to develop an emulsion or a cream formulation having viscous properties as well as a viscous lotion under the condition of weak acidity.

Further, there have been studies using pectin in cosmetic compositions conventionally (see U.S. Patent No. 6159503 and European Patent No. 0432835). However, when only pectin is applied to a cosmetic composition, it is impossible to prevent Lee's appearance and the formulation is not stable.

Accordingly, an object of the present invention is to provide cosmetic compositions such as lotions, essences, and creams having appropriate viscosity and good feeling even under low pH conditions.

In order to accomplish the above object, the present invention provides a method for producing a pesticidal composition comprising pectin, a divalent cation and a fatty acid, wherein the pH is adjusted to pH 2 to 6 (preferably pH 2 to pH 6, , And is an emulsified formulation.

The present invention is based on the surprising discovery that when pectin, divalent cation and fatty acid are used together, they exhibit suitable rheological properties in cosmetic compositions even under low pH conditions and can provide a weakly acidic cosmetic with appropriate viscosity and elasticity.

Pectin is a straight chain polysaccharide in which the galactopyranosyl acid unit is linked by 1,4 bonds, and the carboxyl residue is partially methoxylated. It is divided into 50% or more of high-methoxyl pectin and 50% or less of low-methoxyl pectin depending on the degree of esterification of the carboxyl group. Gometoxyl pectin forms gels in the presence of an appropriate amount of sugars and acids, and the low methoxyl pectin forms a gel when there are divalent cations and acids that can form bridge bonds.

Therefore, the present inventors confirmed that pectin forms a gel in spite of a low pH, and that these components are contained in an emulsified formulation having a low pH, so that a viscous emulsion, a cream formulation and the like can be produced. In addition, it was thought that it could bridge the fatty acid bond similar to the process of forming the bridge between pectin and divalent cation.

The pectin used for forming the weakly acidic cosmetic composition having elasticity of the present invention may be a pectin obtained from various plants, preferably pectin extracted from citrus fruits, apples, grapes, sugarcane, sunflower seeds and the like. Dimethoxyl pectin, gomethoxyl pectin, amidated low methoxyl pectin and the like depending on the structure.

The divalent cation used for forming the weakly acidic cosmetic composition having elasticity of the present invention may be a salt which dissolves in water and emits a divalent cation, preferably a salt of Ca ^{2 +} or Mg ^{2 +} Can be used. More specifically, for example, calcium chloride, magnesium chloride, calcium carbonate, magnesium carbonate or a mixture thereof is preferable, but not limited thereto.

The fatty acid used for forming the weakly acidic cosmetic composition having elasticity of the present invention is a carboxylic acid of a hydrocarbon chain having one carboxy group (-COOH), and any kind of fatty acid can be used regardless of the chain length of the hydrocarbon chain or the degree of unsaturation. Is preferably a fatty acid having 8 to 30 carbon atoms. Examples of such fatty acids include, but are not limited to, behenic acid, arachidonic acid, stearic acid, palmitic acid, myristic acid, lauric acid, etc., alone or in combination.

It is preferable that the weakly acidic cosmetic composition having elasticity of the present invention contains 0.1 to 5% by weight of pectin, 0.001 to 5% by weight of divalent cationic compound and 0.01 to 20% by weight of fatty acid based on the total weight of the composition, Polyol, oil and the like.

The pH of the cosmetic composition of the present invention is 4 to 7, preferably 4 to 6, and more preferably 4.5 to 5.5.

The cosmetic composition of the present invention is prepared by dispersing pectin in purified water and heating it to about 60 ° C or more, preferably about 70 ° C, hydrating it, adding a divalent cation and a water-soluble raw material to prepare an aqueous phase, The active agent is heated to about 60 캜 or higher, preferably about 70 캜 or higher to prepare an oil phase, and the oil phase is mixed with the water phase and stirred.

That is, the present invention provides a method for producing a cosmetic having an acidic property, a cosmetically useful viscosity and a rheological property and having reduced water solubility, comprising the steps of: preparing an aqueous phase containing pectin and a divalent cation; Preparing an oil phase containing a fatty acid; And mixing the water phase and the oil phase to prepare an emulsified formulation.

In the cosmetic composition and the manufacturing method of the present invention, the oily component may also contain a poorly soluble substance such as an oil, a surfactant, a fragrance, and an antiseptic.

Such oils include diisobutyl adipate, 2-hexyldecyl adipate, di-2-heptyl undecyl adipate, N-alkyl glycol monoisostearate, isocetyl isostearate, trimethyl triisostearate Ethylhexanoic acid ethylene glycol, cetyl 2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, pentaerythritol tetra-2-ethylhexanoate, cetyl octanoate, octyldodecyl sulphate But are not limited to, esters, oleyl oleate, octyldodecyl oleate, neopentyl glycol dioctanoate, neopentyl glycol dicaprate, neopentyl glycol dicaprate, triethyl citrate, 2-ethylhexyl succinate, amyl acetate, ethyl acetate, butyl acetate, isocetyl stearate , Butyl stearate, diisopropyl sebacate, di-2-ethylhexyl sebacate, cetyl lactate, myristyl lactate, isononyl isononanoate, isotridecyl isononanoate, isopropyl palmitate, Hexyldecyl palmitate, 2-heptylundecyl palmitate, cholesteryl 12-hydroxystearate, dipentaerythritol fatty acid ester, isopropyl myristate, octyl myristate 2-hexyldecyl myristate, myristyl myristate, hexyldecyl dimethyloctanoate, ethyl laurate, hexyl laurate, 2-octyldodecyl ester of N-lauroyl-L-glutamic acid, Ester-based synthetic oils such as diisostearyl; But are not limited to, dimethylpolysiloxane, dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, dimethylsiloxane / methylphenylsiloxane copolymer, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, tetramethyltetrahydrogenocyclotetrasiloxane, Silicone modified silicone, silicone modified with fluorine, silicone modified with silicone, silicone modified with silicone, silicone modified with silicone, silicone modified with silicone, silicone modified with silicone, silicone modified with silicone, silicone modified with silicone, A vegetable oil such as avocado oil, flaxseed oil, almond oil, insect wax, perilla oil, olive oil, cacao butter, kawok rabbit, visa oil, carnauba wax, liver oil, candelilla wax, Wool, hardened wool, apricot kernel oil, wax, hardened oil, wheat germ oil, Oil, rice germ oil, bran oil, sugar cane oil, camellia oil, safflower oil, shea butter, Chinese wood oil, cinnamon oil, hoho bawab, shellac wool, turtle oil, soybean oil, camellia oil, camellia oil , Corn oil, lard, rapeseed oil, Japanese tung oil, rice hull, embryo oil, horse oil, apricot oil, palm oil, palm kernel oil, castor oil, hardened castor oil, castor oil fatty acid methyl ester, sunflower oil , Grape seed oil, laurel fruit wax, jojoba oil, macadamia nut oil, beeswax, mink oil, cottonseed oil, cottonseed oil, cottonseed oil, mordantab, palm oil, coconut oil, palm oil fatty acid triglyceride, sunflower oil, lanolin, Lanolin, reduced lanolin, lanolin alcohol, hard lanolin, acetic acid lanolin, lanolin isopropyl laurate, hexyl laurate, POE lanolin alcohol ether, POE lanolin alcohol acetate, lanolin fatty acid polyethylene glycol, POE Animal or vegetable oils such as cow lanolin alcohol ether, and egg yolk oil; And hydrocarbon oils such as ozokerite, squalane, squalene, ceresin, paraffin, paraffin wax, liquid paraffin, pristane, polyisobutylene, microcrystalline wax and petrolatum may be used singly or in combination, It is not.

Examples of the surfactant include sorbitan fatty acid esters, glycerin fatty acid esters, polyglycerin fatty acid esters, propylene glycol fatty acid esters, polyethylene glycol fatty acid esters, sucrose fatty acid esters, polyoxyethylene alkyl ethers, polyoxypropylene alkyl ethers, polyoxyethylene alkylphenyl ethers , Polyoxyethylene fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene sorbitol fatty acid esters, polyoxyethylene glycerin fatty acid esters, polyoxyethylene propylene glycol fatty acid esters, polyoxyethylene castor oil, polyoxyethylene hardened castor oil , Polyoxyethylene phytosterol ether, polyoxyethylene phytosterol ether, polyoxyethylene cholestanol ether, polyoxyethylene cholesteryl ether, alkanolamide, sugar ether, sugar Amides and the like may be used alone or in combination, but the present invention is not limited thereto.

In the cosmetic composition or the manufacturing method according to the present invention, the water component may include, but is not limited to, purified water, a polyol, a preservative, a second thickener, and the like within a range not hindering the object of the present invention.

The polyol to be used in the aqueous phase of the emulsion of the present invention is not limited, and it may preferably be composed of propylene glycol, dipropylene glycol, 1,3-butylene glycol, pentylene glycol, 1,2-hexanediol, have.

The emulsions of the present invention may also contain ingredients commonly used in emulsion formulations to the extent that they do not impair the object of the present invention in addition to the abovementioned ingredients and include conventional adjuvants such as stabilizers, vitamins, pigments and the like .

The cosmetic composition using pectin, divalent cation and fatty acid according to the present invention is useful as a cosmetic composition containing no pectin, a cosmetic composition containing only pectin, a pectin, a pectin and a pectin in terms of storage stability, weak acidity similar to skin pH, And 2 are superior to cosmetics containing only cations. That is, the present invention can provide a cosmetic composition which can have elasticity under a weakly acidic condition similar to skin pH, can prevent the formation of a secondary phase, and is excellent in storage stability.

Hereinafter, embodiments of the present invention will be described in detail to facilitate understanding of the present invention. However, the embodiments according to the present invention can be modified into various other forms, and the scope of the present invention should not be construed as being limited to the following embodiments. Embodiments of the invention are provided to more fully describe the present invention to those skilled in the art.

≪ Preparation of Examples and Comparative Examples >

(Examples) of the present invention having a resilience and a composition (Comparative Example) containing no pectin and divalent cations were prepared according to the composition shown in Table 1 below. Specifically, the A and B phases were heated to about 70-75 DEG C and mixed and dissolved. Then, the A phase was slowly added to the B phase, stirred uniformly, and cooled to prepare an emulsified formulation.

Raw material (unit:% by weight) Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 A FAGE-40 stearate 0.50 0.50 0.50 0.50 0.50 Sorbitan stearate 0.50 0.50 0.50 0.50 0.50 Hydrogenated polydecene 10.0 10.0 10.0 10.0 10.0 Spices 0.10 0.10 0.10 0.10 0.10 Stearic acid 10.0 - 10.0 - - Ethylparaben 0.10 0.10 0.10 0.10 0.10 B Purified water Balance Balance Balance Balance Balance Carbomer and neutralizing agent - - - - 1.00 pectin 1.00 1.00 1.00 - - Calcium chloride 0.04 0.04 - - - Methylparaben 0.20 0.20 0.20 0.20 0.20 glycerin 10.0 10.0 10.0 10.0 10.0

≪ Experimental Example 1 >

The stability of the above Examples and Comparative Examples was evaluated by the following methods. To test the stability of the formulation, Example 1 and Comparative Example 1-4 were stored in a transparent glass container at 25 ° C., 40 ° C., 45 ° C., and 50 ° C. in a thermostatic chamber, The specific storage conditions were 6 hours at 1 -10 ℃, 6 hours at 25 ℃, 6 hours at 45 ℃, and 6 hours at 25 ℃. And the stability was evaluated. Storage stability observations of the formulations were evaluated according to the following criteria, and the results are summarized in Table 2.

○: Good, △: Difference from the beginning, X: Separation of oil phase and water phase.

Experiment Item Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 25 ℃ 3 days ○ ○ △ X ○ 1 week ○ ○ X X ○ 3 months ○ ○ X X ○ 40 ℃ 3 days ○ ○ X X ○ 1 week ○ △ X X ○ 3 months ○ X X X ○ 45 ° C 3 days ○ △ X X ○ 1 week ○ △ X X ○ 3 months ○ X X X △ 50 ℃ 3 days ○ X X X ○ 1 week ○ X X X ○ 3 months △ X X X △ cycling
exam 3 days ○ ○ X X ○ 1 week ○ ○ X X ○ 3 months ○ ○ X X △

As can be seen from the above Table 2, the Example is stable under all temperature conditions similar to the level at which a very stable thickener is used as in Comparative Example 4. However, in Comparative Example 4, which is an emulsion formulation using only pectin and divalent cation calcium 1 shows that the formulation is unstable at most temperature conditions and that the formulation is unstable at all temperature conditions in Comparative Example 2 in which only the divalent cation is unstable and in Comparative Example 3 in which the fatty acid, pectin and divalent cations are not all present.

<Experimental Example 2> Measurement of pH of the formulation

The pH of each formulation prepared in Example 1 and Comparative Example 1-4 was measured.

Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 pH 4.46 4.57 4.60 6.16 7.02

As can be seen from the above Table 3, in the case of Example 1 and Comparative Examples 1 and 2, which are pectin-containing formulations, emulsified formulations can be formed under slightly acidic conditions. However, in Comparative Example 3, which is a pectin- 4 was neutral. Compared with the results of Experimental Example 1, the formulation was stable in both Example 1 and Comparative Example 4, but it was found that Example 1 was stable even in a weakly acidic condition similar to skin pH.

&Lt; Experimental Example 3 > Measurement of moisture evaporation (Lee Soo Hyun)

In the present invention, the test was carried out in the following manner in order to examine how the addition of the fatty acid affects the water evaporation amount (iso phase).

In order to test the water evaporation amount of the formulation (Lee Soo Hyun), the above Example 1 and Comparative Example 1 were stored in a chalet in a constant temperature bath at 25 캜 and 50 캜, and the evaporation amounts of moisture were measured at 1 day, 3 days, 1 week and 1 month Respectively. The results are shown in Fig.

As can be seen in Figure 1, 75% of the formulation was evaporated to moisture in Example 1, which is a formulation containing fatty acids, pectin and divalent cations, whereas Comparative Example 1, which is a formulation that does not contain fatty acids, It is considered that the fatty acid evaporated by water prevented the water evaporation phenomenon (Lee Soo Hyun).

<Experimental Example 4> Measurement of rheological properties

The rheological properties of the weakly acidic cosmetic composition having elasticity using the pectin of the present invention were tested by the following methods.

To test the rheological properties of the formulation when using conventional thickeners, pectin, divalent cations and fatty acids, the above Example 1 and Comparative Example 4 were measured using a Rheometer (Physica UDS 200, Plate & plate sensor) The rheological properties were measured. The yield stress was measured at shear rate ranging from 0.01 to 1000 1 / s. Shear stress was measured at creep test for 10 seconds and shear stress for 300 seconds. Respectively.

Example 1 Comparative Example 4 Yield stress (Pa) 122.83 52.14 dynamic stability(%) 68 22

As can be seen from Table 4, in Example 1, which is a formulation containing pectin, the yield stress, which is the force required for the first flow of the formulation, is large. In Comparative Example 4 using the general thickener, appear. In addition, the restorative force of Example 1 was higher than that of Comparative Example 4 by as much as 3 times as much as the restorative force which was restored to the original state from the degree of deformation when the force of 10Pa was given. Therefore, the formant containing pectin has high elasticity, Formulation can be said.

FIG. 1 is a graph showing the results of evaluating the amount of water evaporation (Lee's image) of Example 1 and Comparative Example 1, which is one embodiment of the present invention.

Claims (4)

Wherein the divalent cation is a calcium salt, a magnesium salt or a mixture thereof, wherein the fatty acid has a carbon number of 8 to 30 Wherein the composition is a fatty acid. delete delete Preparing a water phase containing a divalent cation selected from pectin and a calcium salt, a magnesium salt or a mixture thereof; Preparing an oil phase containing a fatty acid having 8 to 30 carbon atoms; And A step of mixing an aqueous phase and an oil phase to prepare an emulsion formulation Wherein the cosmetic composition has an acidic property.

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