JP2007161590A - Oily solid cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oily solid cosmetic excellent in appearance quality, having good forming property and shape-retaining strength and being free from stickiness, being smooth and uniformly extending during application. <P>SOLUTION: The present invention provides the oily solid cosmetic containing 5-20 wt.% dextrin fatty acid ester, 0.5-3 wt.% alkyl-modified silicone wax, 20-60 wt.% powder and 30-50 wt.% oily base. The oily solid cosmetic is excellent in appearance quality and has good forming property and shape-retaining strength, and is free from stickiness and is smooth and uniformly extends when applying it. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to an oily solid cosmetic mainly composed of a solid oil, a liquid oil and a powder. More specifically, the present invention is excellent in appearance quality, has good filling moldability and shape retention strength, and is smooth and non-sticky. It is related with the oil-based solid cosmetics excellent in.

Conventional technology

Conventional oily solid cosmetics are mainly composed of solid oil, liquid oil, and powder, and are widely used in makeup cosmetics such as eye colors and foundations. In oily solid cosmetics, solid oils such as waxes such as hydrocarbons and waxes are used for solidifying the system, and if the amount of these waxes is increased to obtain good moldability and shape retention strength, There is a drawback that the spread during application is heavy and the application cannot be performed uniformly.
In recent years, oil-based solid cosmetics (JP 2001-296267 A and JP 2002-103119 A) have been disclosed which achieve both sufficient moldability and smoothness by destroying the crystal structure of the wax using a dextrin fatty acid ester together with the wax. In order to maintain sufficient moldability and shape retention strength, a technique has been proposed in which a dextrin fatty acid ester of several percent is added to a wax having a blending amount of about 10%.
JP 2001-296267 A JP 2002-103119 A

In the case of oily solid cosmetics filled in a metal pan, commonly used waxes such as hydrocarbons and waxes are opaque at room temperature, resulting in reduced appearance gloss and satisfactory appearance quality. There is a problem. In addition, when using a combination of dextrin fatty acid esters and waxes such as hydrocarbons and waxes, good filling moldability can be achieved even if the amount of wax is reduced and the amount of dextrin fatty acid ester is increased in order to obtain a satisfactory appearance. There was a problem that shape retention strength could not be obtained.

As a result of intensive studies in view of the above problems, the present inventors have found that by blending a dextrin fatty acid ester and a silicone wax, it is possible to obtain appearance quality, good filling moldability and shape retention strength. It came.

That is, the present invention comprises the following components: The present invention comprises the following components (a) to (e): (a) dextrin fatty acid ester of 5 to 20% by weight.
And (b) 0.1 to 3% by weight of an alkyl-modified silicone wax, (c) 20 to 60% of a powder, and (d) 30 to 50% of an oily base. To do.

The oily solid cosmetic of the present invention is excellent in appearance quality, has good moldability and shape retention strength, has no stickiness at the time of application, and has an effect of extending smoothly and evenly.

Hereinafter, the configuration of the present invention will be described in detail. The (a) dextrin fatty acid ester used in the oily solid cosmetic of the present invention is not particularly limited as long as it is a raw material that can be usually blended in cosmetics. Specifically, lauric acid dextrin, myristic acid dextrin, palmitic acid dextrin, stearic acid dextrin, isopalmitic acid dextrin, coconut oil fatty acid dextrin, oleic acid dextrin, palmitic acid / stearic acid mixed fatty acid dextrin, palmitic acid / 2-ethyl Hexanoic acid dextrin, palmitic acid / octanoic acid dextrin and the like can be mentioned, and these can be used alone or in combination of two or more. Among the dextrin fatty acid esters, palmitic acid dextrin ester is particularly preferable. As such (a) dextrin fatty acid ester, commercially available products can be used. Examples of commercially available products include Leo Pearl KL, Leo Pearl KE, Leo Pearl TT, Leo Pearl MKL, Leo Pearl TL (all manufactured by Chiba Flour Milling Co., Ltd.) ).

The blending amount of the (a) dextrin fatty acid ester used in the present invention is 5 to 20% by weight, preferably 10 to 15% by weight, based on the total amount of the oily solid cosmetic. If it is less than 5% by weight, sufficient filling moldability and shape retention strength cannot be obtained, and if it exceeds 20% by weight, smooth usability during coating cannot be obtained.

The (b) alkyl-modified silicone wax used in the oily solid cosmetic of the present invention is not particularly limited as long as it is a raw material that can be usually blended in cosmetics, but a silicone wax represented by the following general formula (1) is preferable. Used.

In the general formula (Chemical Formula), R ₁ has an alkyl group having 20 to 40 carbon atoms or a phenyl group, and may be different in repeating units. n is an integer of 20 to 40.

The (b) alkyl-modified silicone wax used in the present invention preferably has a melting point of 60 ° C. or higher in terms of high temperature stability and shape retention strength. Examples of such (b) silicone wax include SILWHITE HS-70 (manufactured by Nikko Rica Co., Ltd.).

The blending amount of the (b) alkyl-modified silicone wax in the present invention is 0.1 to 3% by weight, preferably 1 to 2% by weight, based on the total amount of the oily solid cosmetic. If it is less than 0.1% by weight, sufficient filling moldability and shape retention strength cannot be obtained, and if it exceeds 3% by weight, sufficient gloss cannot be obtained when it is filled in a metal pan.

The (c) powder in the present invention is a component that reduces the oily feeling of (a) dextrin fatty acid ester and (d) oily base, realizes a smooth feeling at the time of application, and further produces a makeup effect, Examples thereof include powders, glitter powders, organic powders, pigment powders, and composite powders. As long as it is a raw material that can be usually blended in cosmetics, it is not particularly limited by the shape of a sphere, plate, needle, etc., the shape of fumes, fine particles, particle size such as pigment grade, the particle structure of porous, nonporous, etc. In order to improve the smoothness of the spread, it is preferable to use a plate-like inorganic powder having a particle diameter of about 40 μm. Specifically, conch, ultramarine, bengara, yellow iron oxide, black iron oxide, titanium oxide, zinc oxide, aluminum oxide, cerium oxide, silicon dioxide, magnesium oxide, zirconium oxide, antimony oxide, magnesium carbonate, calcium carbonate, oxidation Chromium, chromium hydroxide, carbon black, aluminum silicate, magnesium magnesium silicate, magnesium silicate, magnesium aluminum silicate, mica, synthetic mica, sericite, synthetic sericite, talc, kaolin, silicon carbide, barium sulfate, bentonite Inorganic powders such as smectite and boron nitride, bismuth oxychloride, mica titanium, iron oxide coated mica, iron oxide mica titanium, organic pigment-treated mica titanium, aluminum powder and other glittering powders, nylon powder, polyester Methyl methacrylate, acrylonitrile-methacrylic acid copolymer powder, vinylidene chloride-methacrylic acid copolymer powder, ethyl carbamate powder, polyethylene powder, polystyrene powder, organopolysiloxane elastomer powder, polymethylsilsesquioxane powder, polytetrafluoro Organic powder such as ethylene powder, wool powder, silk powder, crystalline cellulose, magnesium stearate, zinc stearate, N-acyl lysine, pigment powder such as organic tar pigment, lake pigment of organic pigment, fine particle titanium oxide Examples of such powders include coated mica titanium, fine particle zinc oxide-coated mica titanium, barium sulfate-coated mica titanium, titanium oxide-containing silicon dioxide, and zinc oxide-containing silicon dioxide. Can be used alone or in combination, may be used and further complexed. These powders may be used after surface treatment by a generally known method such as silicones, fluorine compounds, metal soaps, and oils in order to improve dispersibility and adhesion.

The blending amount of the powder (c) in the present invention is 20 to 60% by weight, preferably 40 to 60% by weight, based on the total amount of the oily solid cosmetic. If it is less than 20% by weight, smooth spreading cannot be obtained and gloss is poor, and if it is more than 60% by weight, the fluidity at the time of filling deteriorates, which is not preferable.

The (d) oily base used in the present invention is not particularly limited as long as it forms an excellent gel with the above (a) dextrin fatty acid ester and is usually used in cosmetics. Animal oil, vegetable oil, synthetic Examples include the origin of oil and the like, and hydrocarbons, fats and oils, ester oils, fatty acids, higher alcohols, silicone oils, fluorine-based oils, and lanolin derivatives. Specifically, hydrocarbons such as liquid paraffin, squalane, petrolatum, polyisobutylene, polybutene, etc., oils such as olive oil, castor oil, jojoba oil, mink oil, macadamian nut oil, cetyl isooctanoate, myristic acid Isopropyl, isopropyl palmitate, octyldodecyl myristate, glyceryl trioctanoate, polyglyceryl diisostearate, diglyceryl triisostearate, glyceryl tribehenate, rosin acid pentaerythritol ester, neopentyl glycol dioctanoate, cholesterol fatty acid ester, N-lauroyl- Esters such as L-glutamic acid di (cholesteryl, behenyl, octyldodecyl), stearic acid, lauric acid, myristic acid, behenic acid, isostearic acid, olei Fatty acids such as acid, rosin acid, 12-hydroxystearic acid, higher alcohols such as stearyl alcohol, cetyl alcohol, lauryl alcohol, oleyl alcohol, isostearyl alcohol, behenyl alcohol, low polymerization dimethylpolysiloxane, high polymerization dimethylpoly Siloxane, methylphenylpolysiloxane, decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, polyether-modified polysiloxane, cross-linked organopolysiloxane, silicones such as fluorine-modified silicone, perfluorodecane, perfluorooctane, perfluoropoly Fluorine oils such as ether, lanolin derivatives such as lanolin, lanolin acetate, lanolin fatty acid isopropyl, lanolin alcohol, etc. It can be used or two or more. And the compounding quantity will not be restrict | limited especially if the effect of this invention is acquired, but 30 to 50 weight% is preferable.

In addition to the essential components described above, the oily solid cosmetic of the present invention, in addition to the quantitative and qualitative ranges that do not impair the effects of the present invention, other oils than those described above, a polymer compound usually used in cosmetics, a fragrance, Surfactants, antioxidants, preservatives, antifoaming agents, humectants, cosmetic ingredients, water, and the like can be appropriately blended.

Hereinafter, the present invention will be described more specifically with reference to examples and comparative examples. The present invention is not limited only to these examples. The compounding fee is% by weight.

Examples 1 to 5 and Comparative Examples 1 to 5 Eyeshadows (platinum casting type) were prepared by the following production methods of eye shadows having the compositions shown in Tables 1 and 2, and "Appearance quality" and "Nobino-smooth" Each item of “thickness / uniformity” and “shape retention” was evaluated by the following evaluation methods and criteria, and the results are shown in Tables 1 and 2 together.

The eye shadows of the formulations shown in Table 1 and Table 2 were prepared by the following method. A: After component 2 is dispersed in component 3 at room temperature, it is heated to 100 ° C. and uniformly dispersed. B: The remaining raw materials were added to A and dispersed by heating to obtain an eye shadow bulk. C: B was melted and defoamed, then heated again to 85 ° C. and poured into a metal pan to obtain an eye shadow.

Evaluation method: "Appearance quality"
After filling, what was stored in a constant temperature room at 20 ° C. for 24 hours was used as an evaluation sample, which was visually evaluated in three stages.

Evaluation method: “Shape retention”
What was stored for 24 hours in a constant temperature room at 20 ° C. after filling is used as an evaluation sample.

Evaluation method: “Smoothness and uniformity of Noby”
An actual use test was conducted by 10 expert panelists for evaluation. The evaluation criteria were quantified by the following evaluation, using a five-step evaluation to check the most applicable place, and the average score of each result was taken and displayed in the table with the following symbols.
Very bad: 1, bad: 2, normal: 3, good: 4, very good: 5 ◎: 4.5 or more, ○: 3.5 or more
Less than 4.5, Δ: 2.5 or more and less than 3.5, ×: 1.5 or more and less than 2.5, XX: less than 1.5

As is apparent from Tables 1 and 2, the eye shadows of Examples 1 to 5 according to the present invention are excellent in appearance quality, have good moldability and shape retention strength, are not sticky at the time of application, and are smooth and uneven. It was an oily solid cosmetic that evenly extended. On the other hand, (b) Comparative Example 3 with a large amount of alkyl-modified silicone wax had poor appearance quality, and Comparative Example 4 with a small amount did not provide sufficient shape retention. (b) In Comparative Example 5 in which the alkyl-modified silicone wax was replaced with another wax, both the appearance quality and the shape retention were inferior, and the coating uniformity was also inferior. In addition, (a) In the case of Comparative Example 2 in which the amount of dextrin fatty acid ester was small, shape retention was not obtained, and Comparative Example 1 was inferior to the Examples in terms of smoothness. In addition, Example 3 in which silica was further blended, Example 4 in which plate-like powder was blended, and Example 5 in which silicone oil was blended with 1/3 of the liquid oil had smoothness and uniformity during application. It turns out that it will be even better.

The oil-based solid cosmetic of the present invention is excellent in appearance quality, has good moldability and shape retention strength, has no stickiness at the time of application, and has a smooth and even spreading effect, so it can be widely applied to cosmetics. .

Claims (2)

The following essential components (a) to (d)
(A) Dextrin fatty acid ester. (B) Alkyl-modified silicone wax. (C) Powder. (D) Oily base.
Oil-based solid cosmetics characterized by containing. (A) dextrin fatty acid ester is 10 to 20% by weight, (b) alkyl-modified silicone wax is 0.1 to 3% by weight, (c) powder is 20 to 60% by weight, and (d) oily base is 30 to 30%. 2. The oily solid cosmetic according to claim 1, wherein the content is 50% by weight.