KR20030047453A - Cosmetic composition and preparation containing fluorine oil - Google Patents

Abstract

PURPOSE: A method of preparing a cosmetic composition containing fluoride oil is provided to make emulsified material with uniform and minute low viscosity particles by passing the material through a high pressure homogenizer one or more times without introducing any fluorine-based or non-ionic emulsifier. CONSTITUTION: A cosmetic composition contains 0.001-5.0 wt.% of fluoride oil, 5.0-40.0 wt.% of one or more components of common oils and silicon oil, and 5.0-60.0 wt.% of polyhydric alcohol and water part. In order to prepare the cosmetic composition, the contents are first mixed using a common stirrer, and then pass a high pressure homogenizer under the atmospheric pressure of 200-900 one or more times. The fluoride oil is perfluoro polyether phosphate. The average particle size of the composition is 200-500 nanometer, and the viscosity thereof is like the water or 2000cps or less.

Description

Cosmetic composition containing fluorine oil and its manufacturing method {Cosmetic composition and preparation containing fluorine oil}

The present invention relates to a cosmetic composition containing a fluorine-based oil and a method for producing the same, and more particularly, to a cosmetic composition containing a fluorine-based oil by using a high pressure homogenizer to uniformly and finely prepare emulsified particles for long-term storage stability. The present invention relates to a cosmetic composition and a method for producing the same, which improves the usability, moisturizing power and skin safety.

Generally, when applied to the skin, the fluorine-based compound is inert and safe and forms a skin protective film to prevent evaporation of skin moisture and has a silky soft feel. However, since it has very strong hydrophobicity, it is insoluble in most solvents and has a high specific gravity compared to water, making it difficult to prepare an emulsion. As a study for overcoming these difficulties and utilizing the above advantages, the application of oil-in-water and oil-in-water emulsion cosmetics of fluoro polyether having water and oil repellency (European Patent No. 86-196904 / US Patent No. 97-5612043), Cosmetic composition containing an alkyl acrylate crosspolymer as perfluoro polyether and a thickener (Japanese Patent No. 98-30044), a composition of a hydrocarbon compound containing fluorine (US Patent No. 98-5833997), containing fluorine A great variety of studies have been conducted, including cosmetic compositions of one organic compound (US Pat. No. 98-6002048).

However, the patents listed above impart safety by using emulsifiers or thickeners, and have problems such as skin irritation by additionally used raw materials. In addition, although some degree of safety has been imparted, it can be said that there is a limit to exerting great effect on emulsified particles and long-term storage stability.

Therefore, the present invention has been proposed to solve the conventional problems as described above, the object of the present invention is to pass the cosmetic composition containing fluorine-based oil through a high-pressure homogenizer has excellent stability, excellent moisturizing power and skin safety, feeling of use It is to provide a method for producing a low viscosity emulsion.

In order to achieve the above object, the cosmetic composition containing a fluorine-based oil according to an embodiment of the present invention, 0.001 to 5.0 parts by weight of fluorine-based oil in the absence of a fluorine-based emulsifier or other nonionic emulsifier, general oil and silicone oil After first stirring the cosmetic composition containing 5.0-40.0 weight part of 1 type or more, 5.0-60.0 weight part of polyhydric alcohols, and an aqueous phase component with a general stirrer or a homomixer, it is 200-900 atmospheres by the high pressure homogenizer for the second time. It is characterized by the technical configuration of manufacturing by passing through at least once.

Hereinafter, the present invention configured as described above, a method for producing a cosmetic composition containing a fluorine-based oil will be described in detail.

The fluorine oil used in the present invention is a perfluoro polyether phosphate having the following structural formula, and is a viscous oil that further increases compatibility with other raw materials while maintaining the properties of the perfluoro polyether.

X-CH ₂ CF ₂ O- (CF ₂ CF ₂ O) _p- (CF ₂ O) _q CF ₂ CH ₂ -X

p / q = 0.5 to 3

X =-(OCH ₂ CH ₂ ) _n O-PO (OH) ₂ where n = 1 to 2

Perfluoro polyether phosphate has the function of removing the stickiness of the emulsion, reducing oily feeling as well as reducing interfacial tension. In the present invention, a fine and stable emulsion containing a fluorine-based oil was prepared by using a high pressure homogenizer without using an emulsifier.

The high pressure homogenizer is called 'high pressure emulsification' and refers to the second emulsification of the emulsion firstly emulsified with a general stirrer or a homo mixer through a high pressure homogenizer, and the pressure is a high pressure of 50 to 2500 atmospheres. To make emulsified particles small by the impact force. When producing emulsions, the emulsifier capacity of homogenizers can be estimated to be about 10,000 times larger than that of a conventional homomixer (Encyclopedia of emulsion technology, Vol. 11, page 97 (1983)).

Preferable pressure in this invention is 200-900 atmospheres, and it is preferable to let an emulsion pass one or more times.

The most preferable size distribution of the emulsified particles is about 10,000 to 40,000 nanometers of average particle size emulsified by the general homo mixer, and averaged when the second emulsification is performed by the high pressure homogenizer method after completion of the primary emulsification by the general homo mixer. The particle size is reduced to 200-500 nanometers.

In the fluorine-based oil-containing emulsion composition of the present invention, when the perfluoro polyether phosphate is contained in an amount of 0.001 to 5.0 parts by weight, preferably 0.1 to 2.0 parts by weight, an emulsion having the best usability and excellent stability over time is produced. Less than 0.001 parts by weight, the stability is poor and the unique feeling of perfluoro polyether phosphate is insignificant, and above 5.0 parts by weight, rather water repellency and oil repellency is large, which may adversely affect the feeling.

Oil components include squalane as a hydrocarbon, liquid paraffin and octyldodecanol as synthetic oils, trioctanoin, isocetyl palmitate, isocetyl myristate, cetyl octanoate, neopentyl glycol dicaprate and diisopropyl seba. Choose from Kate, Diisostearyl Adipate, Diisopropyl Madiate, Trimethylol Propane Trioctanoate, Trimethylol Propane Triisostearate, Pentaerythritol Trioctanoate, Isopropyl Myristate and Silicone Oil It is used by mixing 1 or more types to 5.0 to 40.0 parts by weight.

The emulsion particles produced in the present invention have a very stable emulsion of 200 to 500 nanometers in size. In general, in order to prepare an emulsion having an average particle size of 250 nanometers or less, the homogenizer must have a large pressure and a large number of passes, thereby decreasing efficiency.

The viscosity of the composition of the present invention is about 2000 cps or less to about the same or slightly higher than water. This composition can be used as it is, and it can be used also as a base, such as a skin, lotion, essence, cream.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. However, the Examples are provided to illustrate the present invention and the present invention is not limited thereto.

Examples 1-5

Following the composition of Table 1, the aqueous phase and the oil phase were heated and stirred at 70 ° C., and then emulsified at 70 ° C. for 30 minutes and then cooled. The secondary emulsification was passed through a high pressure homogenizer and the pressure was 50 to 2500 atm and once passed at 500 atm to prepare the emulsions of Examples 1 to 5.

Cosmetic Composition Contents of Examples 1 to 5 division Raw material name Example 1 Example 2 Example 3 Example 4 Example 5 Awards Purified water-based glycerin dipropylene glycol perfluoro polymethyl ether KOH (10%) Total 1003.05.02.00.8 Total 1003.05.02.00.8 Total 1003.05.02.00.8 Total 1003.05.02.00.8 Total 1003.05.02.00.8 Paid Octyldodecyl myristate cyclomethicone mineral oil ethylhexyl methoxy cinnamate flavoring 20.0--5.0 10.010.0-5.0 10.0-10.05.0 20.0--5.0 20.0--5.0 High pressure treatment (bar) 400 400 400 600 900

Comparative Example 1 and Comparative Example 2

According to the composition of Table 2, the water and oil phases were heated and stirred at 70 ° C., and then emulsified in a separate mixer at 70 ° C., and then cooled to prepare Comparative Example 1 and Comparative Example 2.

Cosmetic composition contents of Comparative Example 1 and Comparative Example 2 division Raw material name Comparative Example 1 Comparative Example 2 Awards Purified water-based glycerin dipropylene glycol perfluoro polymethyl ether KOH (10%) Total 1003.05.02.00.8 Total 1003.05.02.00.8 Paid Octyldodecyl myristate cyclomethicone mineral oil ethylhexyl methoxy cinnamate flavoring 20.0--5.0 10.010.0-5.0 High pressure treatment (bar) 0 0

Stability evaluation

The stability evaluation was observed for 1 month after storage in 50 ° C, 0 ° C, and a cycle chamber (-10 ° C to 45 ° C to -10 ° C) to evaluate the separation of oil and changes in particle size. Evaluation scores were shown as very stable: ◎, stable: O, normal: Δ, slightly separated: X, completely separated: XX.

Stability test result Comparative Example 1 Comparative Example 2 Example 1 Example 2 Example 3 Example 4 Example 5 50 ℃ X X O O ◎ ◎ ◎ 0 ℃ △ △ ◎ ◎ ◎ ◎ ◎ Cycle chamber X X O △ ◎ ◎ ◎

Particle size distribution

The particle size and the degree of its distribution were measured after preparation using a commonly used particle sizer machine.

Particle Average Size Distribution Results sample Average particle size in nanometers Comparative Example 1 Comparative Example 2 Example 1 Example 2 Example 3 Example 4 Example 5 10,000-40,00010,000-30,000 200-500 150-400 300-600 200-400 100-300

As shown in Tables 3 and 4, when prepared by the general method as in the comparative example, it can be seen that the emulsion particle size is also very large and unstable. The higher the pressure when producing an emulsion using a homogenizer, the finer the particles. However, since the particles are not proportionally smaller compared with the increased pressure, 500 atm is preferable in consideration of economic aspects.

Usability Evaluation

The panel of 45 people in their 20s to 40s evaluated the usability by the sensory evaluation of the emulsified cosmetic composition of the Example and comparative example which were prepared above as follows. The evaluation scores were marked as very good (5), good (3), normal (0), bad (-3) and very bad (-5).

Usability evaluation result Comparative Example 1 Comparative Example 2 Example 1 Example 2 Example 3 Example 4 Example 5 grade 3.4 3.6 4.0 4.7 4.7 4.7 4.8

As shown in Table 5, even if the composition is the same, the preference was different depending on the presence and pressure of the high pressure treatment. The reason is that when the high pressure treatment, the particles are small and fine and there is no burden on the skin.

Moisturizing ability evaluation

45 panelists from 20 to 40 generations of the emulsified cosmetic composition of the Example and the comparative example which were prepared above judged moisture retention power by sensory evaluation as follows. The evaluation scores were marked as very good (5), good (3), normal (0), bad (-3) and very bad (-5).

Moisturizing ability evaluation result Comparative Example 1 Comparative Example 2 Example 1 Example 2 Example 3 Example 4 Example 5 grade 3.4 3.8 4.0 4.2 4.1 4.2 4.5

Fluorine-based oils have excellent moisturizing power by forming a strong barrier film on the skin to suppress evaporation of moisture from the skin. As shown in Table 6, the overall excellent moisturizing power was shown, it was confirmed that the embodiment subjected to the high pressure treatment showed a slightly higher level of moisturizing power than the comparative example.

Skin primary irritation test (closed cloth test)

In order to examine the skin irritation with respect to the above Examples and Comparative Examples, 15 μg of each sample was applied to the arms of 50 healthy males and females for 24 hours, and after 4 hours of removing the pin chamber, the naked eye The change in skin condition was read and the results are shown in Table 7.

Skin Primary Irritation Test Results sample Number of test subjects Judgment result Stimulus ++ + +- - Comparative Example 1 Comparative Example 2 Example 1 Example 2 Example 3 Example 4 Example 5 50505050505050 ------- ------- 3211--1 47484949505049 0.060.040.020.020.000.000.02

[Criteria]

-: No erythema or unusual phenomenon

+-: Slightly reddish

+: Significantly redder than the surroundings

++: reddens and swells more heavily

As a result of the irritation (safety) test of Table 7, it was found that the overall safety of the Example was prepared using a homogenizer and was safer to the skin than that of the Comparative Example.

As described above, the manufacturing method of the cosmetic composition containing the fluorine-based oil according to the present invention, by passing the emulsion through the high-pressure homogenizer one or more times in the absence of a fluorine-based emulsifier or other nonionic emulsifiers and By producing a fine low viscosity emulsion, there is an effect of providing a cosmetic composition containing a fluorine-based oil that has improved long-term storage stability and improved usability, moisturizing power and skin safety.

Claims (4)

In the method for producing a cosmetic composition containing a fluorine-based oil, a fluorine-based oil containing 0.001 to 5.0 parts by weight, fluorine-based characterized in that the high-pressure homogenizer is used to emulsify one or more times at 200 to 900 atmospheres The manufacturing method of the cosmetic composition containing an oil. The method for producing a cosmetic composition containing a fluorine-based oil according to claim 1, wherein the fluorine-based oil is perfluoro polyether phosphate. Cosmetic composition containing a fluorine-based oil manufactured by the method of Claim 1. 4. The cosmetic composition according to claim 3, wherein the composition has an average particle size of 200 to 500 nanometers and a viscosity equal to or less than 2,000 cps.