JP2002053420A - Oily solid cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an oily solid cosmetic capable of suppressing a sweating phenomenon of exudation to the surface without deteriorating basic usability such as slip, smoothness, gloss, a moist feeling or finish during coating. SOLUTION: This oily solid cosmetic is characterized by formulating a polyglycerol ester of a fatty acid represented by the following formula as an active ingredient suppressing the sweating caused on the surface of the cosmetic and the fatty acids in the polyglycerol ester of the fatty acid are composed of, e.g. a mixture of one or more kinds of main constituent fatty acids that are >=14C saturated fatty acids and contain >=60 wt.% of behenic acid. The average degree of polymerization of glycerol is 7-11 and the degree of esterification of the polyglycerol ester is >=80%.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an oily solid cosmetic, and more particularly to a system containing a polyglycerin fatty acid ester in a system,
The present invention relates to an oil-based solid cosmetic which is improved in suppressing perspiration generated on the surface of a cosmetic without impairing basic usability.

[0002]

2. Description of the Related Art Generally, waxes, oil-based solid cosmetics such as lipsticks, foundations and eye shadows are used.
Liquid oils, powders such as coloring agents, fragrances, etc. are blended, and by combining these components, basic usability such as spreadability and smoothness, gloss, moist feeling, finish at the time of application, and stability Is being prepared. In particular, in terms of stability, a phenomenon called sweating, in which a water-drop-like liquid seeps onto the surface of an oil-based solid cosmetic, is a feature of the oil-based solid cosmetic. However, in oily solid cosmetics, the amount of wax is reduced as much as possible to improve the spreadability and smoothness at the time of application, and the basic usability of the finish. Sweating occurred on the surface, and it did not reach the range where the usability and the stabilization of perspiration were sufficiently satisfied.

[0003] Therefore, in order to improve the effect of suppressing perspiration of oily solid cosmetics, there are cases in which non-crystalline microcrystalline wax is blended, and cases in which polyoxyethylene beeswax is blended. However, in order to sufficiently improve the effect of suppressing sweating with these methods,
Since many of these components must be incorporated into the system, basic usability such as spreading, smoothness, and finish at the time of application is impaired, and the problem has not been solved.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an oily solid cosmetic which does not impair the basic usability and does not involve the above-mentioned sweating phenomenon.

[Means for Solving the Problems]

The inventors of the present invention have conducted intensive studies on improving the quality of oily solid cosmetics, which is the above problem, and as a result, polyglycerin fatty acid ester has an effect of improving the suppression of the sweating phenomenon generated on the surface of oily solid cosmetics. And found that the present invention was completed.

That is, the present invention relates to an oily solid cosmetic comprising a polyglycerin fatty acid ester as an active ingredient for suppressing sweating generated on the surface of the cosmetic.

[0007] The constituent fatty acids of the polyglycerin fatty acid ester to be incorporated in the oily solid cosmetic of the present invention are saturated fatty acids whose main constituent fatty acids have 14 or more carbon atoms, and one or a mixture of two or more thereof is behenic acid. At least 60% by weight. Examples of the saturated fatty acid having 14 or more carbon atoms include myristic acid, palmitic acid, stearic acid, arachiic acid, behenic acid, lignoceric acid, and cerotic acid. In order to improve the effect of suppressing perspiration, among the main constituent fatty acids, behenic acid is preferably contained in an amount of 65% by weight or more, and more preferably 80% by weight of behenic acid. On the other hand, if the content of behenic acid is less than 60% by weight, the effect of suppressing perspiration becomes insufficient, and the object of the present invention is not achieved, which is not preferable.

[0008] The esterification ratio of the fatty acid to the polyglycerin of the polyglycerin fatty acid ester blended in the oily solid cosmetic composition of the present invention is preferably 80% by weight or more, and is preferably 90% by weight or more.
It is more preferable that the content be not less than wt%. On the other hand, when the esterification ratio is less than 80%, the effect of suppressing perspiration is not affected, and the object of the present invention is not achieved, which is not preferable.

The degree of polymerization of glycerin of the polyglycerol fatty acid ester to be incorporated in the oily solid cosmetic of the present invention is 7-1.
1 is preferable and 8 to 10 are more preferable. On the other hand, if the glycerin polymerization degree is less than 7, the object of the present invention is not achieved, which is not preferable.

[0010] Furthermore, by incorporating 0.01 to 10% by weight of the polyglycerin fatty acid ester in the oil-based solid cosmetic of the present invention in the total amount of the oil-based solid cosmetic, sweating on the surface can be suppressed. The compounding amount in the total amount of the cosmetic is preferably 0.05 to 5% by weight, and more preferably 0.1 to 3% by weight. The amount is 0.01
If it is less than 10% by weight, the effect of suppressing sweating is insufficient, and 10% by weight.
It is not preferable to mix the above components because the basic usability such as spreading and smoothness at the time of application is deteriorated.

The oil-based solid cosmetic of the present invention comprises, as essential components, at least one or two or more of wax and waxy substances in an amount of 3 to 30% by weight, and at least one or more of liquid and semi-solid oil components. From 20 to 90% by weight, and at least one or two or more cosmetic pigments from 0.5 to 3
It is characterized by containing 0% by weight.

The wax and waxy substance used in the present invention include, for example, ceresin wax, microcrystalline wax, candelilla wax, carnauba wax, polyethylene wax, paraffin wax, rice wax, beeswax, and wood wax. And the like, but are not limited thereto.

Examples of liquid and semi-solid oils include hydrocarbons such as liquid paraffin, liquid isoparaffin and squalane; natural vegetable oils such as olive oil, macadamia nut oil, castor oil, avocado oil and meadowfoam oil; Silicone oils such as dimethylpolysiloxane, methylphenylpolysiloxane, and cyclic silicone; diisostearyl malate, glyceryl trioctanoate,
Trimethylolpropane triisostearate, octyldodecyl myristate, diisopropyl dimer,
Esters such as isotridecyl isononanoate; higher alcohols such as octyldodecanol, isostearyl alcohol, and stearyl alcohol; and the like, but are not limited thereto.

As the cosmetic pigment, known pigments usually used for cosmetics can be used. For example,
Extenders such as sericite, mica, talc, silica, kaolin, nylon powder, synthetic phlogopite; titanium oxide,
Coloring agents such as iron oxide, ultramarine blue, organic tar dyes and lakes. Further, those obtained by treating these cosmetic pigments with silicone, fatty acid ester, metal soap and the like can also be used, but are not limited thereto.

The oil-based solid cosmetic composition of the present invention may further comprise, if necessary, other oil-based raw materials, surface active agents, and the like, as long as the polyglycerol fatty acid ester does not impair the effect of suppressing sweating. An agent, a preservative, an antioxidant, a polymer, a humectant, water, an ultraviolet absorber, a resin, a solvent, a fragrance and the like can be compounded.

The oily solid cosmetic of the present invention can be produced by heating, dissolving, stirring, mixing, etc. the above-mentioned components according to a conventional method, and mainly includes makeup cosmetics such as lipstick, foundation, eyeshadow and the like. Although it is an object, it can be widely applied to the entire cosmetics field as long as the effect of suppressing perspiration of polyglycerin fatty acid ester is not impaired according to the purpose.

[0017]

EXAMPLES The present invention will be described in more detail with reference to the following Examples, but it should not be construed that the invention is limited thereto. In addition, the compounding amount is shown by weight% unless otherwise specified.

With respect to the compositions of Examples and Comparative Examples shown in Table 1, dish-like lipsticks were manufactured, and the molded products were checked for the presence or absence of perspiration on the surface, and further subjected to a sensory evaluation according to the following evaluation criteria. Was.

[0019]

[Table 1]

(Production method) Components (1) to (10) are charged into a heating and melting vessel, and heated and melted at 90 to 100 ° C. B. The components (11) to (13) are added to A, and the dispersion treatment is sufficiently performed by a roll mill. C. B is heated and dissolved again, and after adjusting the temperature to 85 to 90 ° C., the mixture is degassed. D. Add the component (14) to C, pour into a dish-shaped container and mold.

The method for confirming the sweating stability is as follows. First, a dish-shaped lipstick molded product is treated with a saturated aqueous solution of potassium chloride at a relative humidity of 8%.
Leave in a thermostat at 30 ° C. adjusted to 3.6%. Then, after 3 days and 30 days after the standing, they are put into a 37 ° C. constant temperature apparatus at a relative humidity of 40%. Then, the surface of the lipstick 2 hours after the introduction was visually observed, and the presence or absence of perspiration was confirmed.

(Presence or absence of sweating)
After visually confirming perspiration on the lipstick surface, the diameter of oil droplets of perspiration was measured on a scale and evaluated. "○" indicates no sweating, "X" indicates that the oil droplet diameter is 1.0 mm or more.
Less than mm was designated as “△”.

The sensory evaluation was performed by 10 expert panelists, and the evaluation of basic feeling of use was "Nanobi at application",
Evaluation was made on four items: “gloss after application”, “moist feeling after application”, and “finish”.

As a criterion for sensory evaluation, for each evaluation item, a very bad was set to 1 and a very good was set to 7, and a seven-point evaluation was used to check the most relevant points. Shown in

As is clear from the results shown in Table 1, the formulation of the present invention is effective in suppressing perspiration generated on the surface, and has a basic property such as stretching during application, gloss after application, and moist feeling after application. It is clearly confirmed that the useability is not impaired.

Further, the inventors of Example 1, Comparative Example 1 and Comparative Example 2 showed that DS after 3 days and 30 days after standing
C measurement was performed. The DSC was measured by the following method.

(DSC measurement)

As is apparent from the results shown in FIGS.
As a result of DSC after 0 days, a large peak is observed at 61.8 ° C. in Comparative Example 1 and at 63.1 ° C. in Comparative Example 2, but a very small peak is observed at 60.2 ° C. in Example 1. . From these facts, it is suggested that Example 1 is stable with less change of crystals over time than Comparative Examples 1 and 2. Therefore, it is clearly confirmed from the DSC results that the oily solid cosmetic of the present invention improves the effect of suppressing perspiration.

FIG. 1

FIG. 2

FIG. 3

FIG. 4

FIG. 5

FIG. 6

[0035]

As described above, the present invention provides an oily solid cosmetic containing a polyglycerin fatty acid ester which improves the effect of suppressing perspiration without impairing basic usability.

[0036]

[Brief description of the drawings]

FIG. 1 is a spectrum diagram in which the oily solid cosmetic of Example 1 was left for 3 days and then subjected to DCS measurement.

FIG. 2 is a spectrum diagram in which the oily solid cosmetic of Example 1 was left for 30 days and then subjected to DCS measurement.

FIG. 3 is a spectrum diagram in which the oil-based solid cosmetic of Comparative Example 1 was left for 3 days and then subjected to DCS measurement.

FIG. 4 is a spectrum diagram showing the results of DCS measurement after leaving the oily solid cosmetic of Comparative Example 1 for 30 days.

FIG. 5 is a spectrum diagram showing DCS measurement after leaving the oil-based solid cosmetic of Comparative Example 2 for 3 days.

FIG. 6 is a spectrum diagram showing DCS measurement after leaving the oil-based solid cosmetic of Comparative Example 2 for 30 days.

Claims (3)

[Claims] An oily solid cosmetic comprising a polyglycerol fatty acid ester represented by Chemical Formula 1 as an active ingredient for suppressing sweating generated on the surface of the cosmetic. Embedded image 2. The fatty acid composition of the polyglycerol fatty acid ester is such that the main constituent fatty acid is a saturated fatty acid having 14 or more carbon atoms, and one or a mixture of two or more of these fatty acids contains behenic acid in an amount of 60% by weight or more. The oily solid cosmetic according to claim 1, characterized in that the average degree of polymerization of glycerin is 7 to 11 and the esterification rate is 80% or more. 3. The oily solid cosmetic according to claim 1, wherein the amount of the polyglycerin fatty acid ester is 0.01 to 10% by weight based on the total amount of the oily solid cosmetic.