JP2012214410A - Oily cosmetic base and oily cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oily cosmetic with which hardness, viscosity or gel strength from low viscosity range to high viscosity range can be easily adjusted and which has excellent stability and use feeling while giving clear color without deteriorating intrinsic color of a pigment or the like.SOLUTION: An oily cosmetic base contains: (A) N-acyl-L-glutamic acid dialkylamide; (B) an oil agent which dissolves 2 mass% of the component (A) generating a gel having a yield value of 0.5 N/cmat 20°C; and (C) (α-olefin/vinyl pyrrolidone)copolymer. The oil cosmetic contains the same.

Description

  The present invention relates to an oily cosmetic base. More specifically, the present invention relates to an oily cosmetic base capable of easily adjusting the viscosity, which contains N-acyl-L-glutamic acid dialkylamide, an oil agent, and an (α-olefin / vinylpyrrolidone) copolymer, and further a pigment, etc. The present invention relates to an oily cosmetic that can be easily adjusted in viscosity.

  Depending on the type of application, oily cosmetics may be solid at room temperature, such as lipsticks and foundations, or semi-solid at room temperature, such as lip balm, eye color, lip gloss, oil cleansing, etc. There are various forms, including gels.

Conventionally, in order to prepare such a solid or gel-like oily cosmetic, a gelling agent such as wax, dextrin fatty acid ester, amino acid-based gelling agent or fine particle silicic acid is used, and the viscosity of the cosmetic is reduced. It has been adjusted.
However, when a wax is used, it becomes difficult to prepare an oily cosmetic having excellent stability in a low viscosity region. On the other hand, in the high-viscosity region, the melting point becomes high, the cosmetic itself becomes hard, and when used for a lipstick or the like, the usability is deteriorated such as poor applicability. Further, it adversely affects the color of pigments and the like that are blended when the cosmetic becomes opaque, and a beautiful appearance cannot be expressed.
In addition, when dextrin fatty acid ester is used, viscosity adjustment is easier than when wax is used, and oily cosmetics with high transparency can be prepared, but the disadvantage of poor stability in the low viscosity region There is.
In addition, when fine silica is used, the finish becomes crisp, and the feeling of use such as increased elongation at the time of application becomes worse, and a large amount is required to prepare a high viscosity oily cosmetic. It was necessary to blend in.
Further, when an amino acid gelling agent is used, it is possible to make the oily cosmetic transparent, but there is a drawback that the stability in the low viscosity region is not sufficient (Patent Documents 1-3).

JP 2002-316971 A Japanese Patent Laid-Open No. 51-19139 JP 2010-100608 A

Therefore, there has been a demand for an oily cosmetic that can easily adjust the hardness, viscosity, and gel strength from a low viscosity range to a high viscosity range and that is excellent in stability and usability.
Furthermore, there has been a demand for an oily cosmetic that has a small effect on the inherent color of the pigment to be blended and can exhibit a vivid color.

As a result of intensive studies by the present inventors based on the above-mentioned problems, an oil agent that has been gelled with an amino acid-based gelling agent that has been conventionally used is combined with an (α-olefin / vinyl pyrrolidone) copolymer to reduce the viscosity. An oily cosmetic base that is easy to adjust the hardness, viscosity, and gel strength from the viscosity range to the high-viscosity range, and that has excellent stability and usability. The inventors have found that a cosmetic can be obtained and have completed the present invention.
Further, since such an oily cosmetic base can be made into a transparent base by selecting a specific oil, it has been found that an oily cosmetic capable of exhibiting a vivid pigment color in addition to the above-described properties can be obtained. The present invention has been completed.

That is, the present invention
[1] (A) N-acyl-L-glutamic acid dialkylamide,
(B) an oil agent in which a gel yield value at 20 ° C. of a gel formed by dissolving 2% by mass of (A) is 0.5 N / cm ² or more, and (C) (α-olefin / vinylpyrrolidone) copolymer Oily cosmetic base;
[2] The oily cosmetic base according to [1], wherein (A) is one or both of N-2-ethylhexanoylglutamic acid dibutylamide and N-lauroylglutamic acid dibutylamide;
[3] (B) is jojoba oil, hydrogenated polyisobutene, polyglyceryl triisostearate, triethylhexanoin, diphenylsiloxyphenyl trimethicone, diisostearyl malate, neopentyl glycol dicaprate, and di (phytosteryl / octyl) lauroyl glutamate The oily cosmetic base according to the above [1] or [2], which is one or more components selected from the group consisting of dodecyl);
[4] The above [1] to [C] wherein (C) is one or more components selected from the group consisting of (eicosene / vinyl pyrrolidone) copolymer, (vinyl pyrrolidone / hexadecene) copolymer and tricontanyl polyvinyl pyrrolidone. 3] The oily cosmetic base according to any one of
[5] The oily cosmetic according to any one of [1] to [4], wherein (A) and (C) are contained in a mass ratio of (A) :( C) = 1: 1 to 500: 1. Base;
[6] The oily cosmetic base according to [5] above, containing (A) and (C) in a mass ratio of (A) :( C) = 2: 1 to 200: 1; and [7] The oily cosmetic base according to any one of [1] to [6], comprising a solvent capable of dissolving (A) at 150 ° C. or lower;
[8] The oily cosmetic base according to [7], wherein the solvent is octyldodecanol;
[9] An oily cosmetic comprising the oily cosmetic base according to any one of [1] to [8] is provided.

  According to the present invention, it is possible to easily adjust the hardness, viscosity, and gel strength from a low viscosity region to a high viscosity region, and to provide an oily cosmetic base excellent in stability and feeling of use, and an oily cosmetic containing the same. can do.

In the first aspect of the present invention, the gel yield value at 20 ° C. of a gel formed by dissolving (A) N-acyl-L-glutamic acid dialkylamide, (B) 2% by mass of (A) is 0.5 N An oily cosmetic base comprising an oil agent having a / cm ² or more and (C) (α-olefin / vinylpyrrolidone) copolymer is provided.

［式中、R¹およびR²はそれぞれ独立して炭素原子数1〜26の炭化水素基であり、R³は炭素数5〜17の炭化水素基である］で表されるグルタミン酸誘導体であり、好ましくはN−2−エチルヘキサノイル−L−グルタミン酸ジブチルアミドおよびN−ラウロイル−L−グルタミン酸ジブチルアミドである。これらのグルタミン酸誘導体は、1種または2以上を油性化粧料基剤の全量に対して約0.1〜5.0質量％、好ましくは約0.2〜3.0質量％、より好ましくは約0.3〜3.0質量％、最も好ましくは約0.5〜2.0質量％配合することができる。N−アシル−L−グルタミン酸ジアルキルアミドの配合量が約0.1質量％未満である場合は油性化粧料基剤の硬さ・粘性・ゲル強度の調整が困難となる、一方約5.0質量％を超える場合は油性化粧料基剤の安定性が悪くなるため好ましくない。 The (A) N-acyl-L-glutamic acid dialkylamide used in the oily cosmetic base of the present invention has the general formula I:

[Wherein, R ¹ and R ² are each independently a hydrocarbon group having 1 to 26 carbon atoms, and R ³ is a hydrocarbon group having 5 to 17 carbon atoms] N-2-ethylhexanoyl-L-glutamic acid dibutyramide and N-lauroyl-L-glutamic acid dibutylamide are preferred. One or more of these glutamic acid derivatives are used in an amount of about 0.1 to 5.0% by weight, preferably about 0.2 to 3.0% by weight, more preferably about 0.3 to 3.0% by weight, most preferably based on the total amount of the oily cosmetic base. Can be blended in an amount of about 0.5 to 2.0% by mass. If the blending amount of N-acyl-L-glutamic acid dialkylamide is less than about 0.1% by mass, it will be difficult to adjust the hardness, viscosity and gel strength of the oily cosmetic base, while if it exceeds about 5.0% by mass Is not preferable because the stability of the oily cosmetic base is deteriorated.

The oil agent (B) used in the oily cosmetic base of the present invention must be sufficiently solidified and increase in viscosity with N-acyl-L-glutamic acid dialkylamide. (B) The oil agent is particularly limited as long as the gel yield value at 20 ° C. of the gel formed by dissolving the N-acyl-L-glutamic acid dialkylamide at 2% by mass is 0.5 N / cm ² or more. It is not something.
The gel yield value defined here is as follows: 30 g of an oil agent in which N-lauroyl-L-glutamic acid dibutylamide was dissolved at 2% by mass was filled in a 30 mL jar and allowed to stand at 20 ° C. for 24 hours or longer. Using a company-made rheometer 2020ND-D, measured with a disk-shaped stamping die with a table speed of 30 cm / min and a diameter of 15 mm to 25 mm, it is the maximum value of stress measured from the start of entry to 15 mm. .

  Such oils include, for example, polyols such as 1,3-butylene glycol, vegetable oils such as jojoba oil (liquid wax), hydrocarbon oils such as hydrogenated polyisobutene (liquid isoparaffin or heavy liquid isoparaffin), triisostearic acid Ester oil such as polyglyceryl-2 (polyglycerin fatty acid ester), triethylhexanoin (triglyceride), diisostearyl malate, neopentyl glycol dicaprate, di-N-lauroyl-L-glutamate (phytosteryl / octyldodecyl), diphenylsiloxy Silicone oils such as phenyl trimethicone are included. These oil agents are used in an amount of about 10 to 99% by mass, preferably about 30 to 95% by mass, more preferably about 40 to 95% by mass, and most preferably one or more types based on the total amount of the oily cosmetic base. Can be blended in an amount of about 50 to 95% by mass. When the blending amount of the oil is less than about 10% by mass or exceeds about 99% by mass, it is not preferable because it is difficult to adjust the hardness, viscosity, and gel strength of the oily cosmetic base.

The (C) (α-olefin / vinyl pyrrolidone) copolymer used in the oily cosmetic base of the present invention is a copolymer synthesized from an α-olefin having 12 to 36 carbon atoms and vinyl pyrrolidone, preferably ISP Japan. (Eicosene / vinyl pyrrolidone) copolymer sold by Antaron (registered trademark) V-220 from the company, and (vinyl pyrrolidone / hexadecene) copolymer sold by the company as Antaron (registered trademark) V-216. (Registered trademark) One or more selected from the group consisting of tricontanyl and polyvinylpyrrolidone sold as WP-660. These copolymers are used in an amount of about 0.002 to 1.0% by weight, preferably about 0.005 to 0.5% by weight, more preferably about 0.01 to 0.3% by weight, based on the total amount of the oily cosmetic base. Most preferably, about 0.02 to 0.2 mass% can be blended.
Further, the oily cosmetic base of the present invention comprises (A) N-acyl-L-glutamic acid dialkylamide and (C) (α-olefin / vinylpyrrolidone) copolymer in a mass ratio (A): (C). = About 1: 1 to about 500: 1, preferably about 2: 1 to about 200: 1. If the (α-olefin / vinylpyrrolidone) copolymer is outside the range of the blending ratio with respect to the total amount of the above-mentioned oily cosmetic base or the blending ratio with (A) N-acyl-L-glutamic acid dialkylamide, the oily cosmetic It is not preferable because it is difficult to adjust the hardness, viscosity, and gel strength of the base.

Furthermore, a solvent can be used in the oily cosmetic base of the present invention in order to facilitate the dissolution of (A) N-acyl-L-glutamic acid dialkylamide. By blending such a solvent, the handleability in the production process of the oily cosmetic base can be further improved.
The solvent used in the oily cosmetic base of the present invention is not particularly limited as long as it can dissolve (A) N-acyl-L-glutamic acid dialkylamide at 150 ° C. or lower, but preferably octyldedeca Nord.

The oily cosmetic base of the present invention is prepared by, for example, dissolving (A) N-acyl-L-glutamic acid dialkylamide in (B) the oil at a temperature of about 150 ° C. or lower, and then adding (C) ( The α-olefin / vinyl pyrrolidone) copolymer is added and dissolved or uniformly dispersed at about 100-120 ° C., or added to the mixture of (B) oil and (C) (α-olefin / vinyl pyrrolidone) copolymer. Dissolve or uniformly disperse at 100-120 ° C, degas, cool to about 80-90 ° C by standing or water cooling, pour into a container with sufficient fluidity, and then cool until solidified Can be manufactured.
Alternatively, (A) N-acyl-L-glutamic acid dialkylamide is optionally dissolved in a solvent before (B) the oil or (B) the oil and (C) (α-olefin / vinylpyrrolidone) copolymer. By adding to a mixture, it can melt | dissolve or disperse | distribute uniformly at lower temperature, and can improve the handleability in a manufacturing process.

Moreover, this invention provides the oil-based cosmetics prepared by adding a cosmetic ingredient to the oily cosmetic base described above in the second aspect.
The cosmetic ingredient used in the oily cosmetic composition of the present invention is not particularly limited as long as it does not impair the effects of the present invention, but is a pigment or powder, a gelling agent other than (A), (B) Other than the oil agent, the polymer other than (C), the solvent other than the solvent capable of dissolving (A) at 150 ° C. or lower, or the antioxidant.

As the pigment or powder, for example, there is no particular limitation depending on the shape, particle diameter, particle structure, and spherical, plate-like, needle-like or fine particles, porous, nonporous, etc. can be used. Inorganic powders, glitter powders, organic powders, pigment powders, metal powders, composite powders, and the like are not particularly limited as long as they are usually used in cosmetics. Can also be used.
Specifically, white inorganic pigments such as titanium oxide, zinc oxide and barium sulfate, colored inorganic pigments such as iron oxide, carbon black, chromium oxide, chromium hydroxide, bitumen and ultramarine, talc, muscovite, phlogopite, red Mica, biotite, synthetic phlogopite, sericite, synthetic sericite, kaolin, aluminum oxide, magnesium oxide, zirconium oxide, aluminum silicate, hydroxyapatite, boron nitride, silicic anhydride, etc. , Titanium oxide-coated mica, iron oxide mica titanium, bituminized mica titanium, carmine-treated mica titanium, luminescent powder such as bismuth oxychloride, polyacrylic resin, fluorine resin, cellulose resin, polystyrene resin, styrene Copolymer resin such as acrylic copolymer, organic polymer resin powder such as silicone resin, urethane resin, Organic pigment powder such as color 201, red 202, blue 404, yellow 401, red 104, orange 205, yellow 4, yellow 5, green 3, blue 1, etc. zirconium, barium Or organic pigment powders, such as aluminum lake, etc. are mentioned.

  These pigments or powders can be used singly or in combination of two or more, and if necessary, using a fluorine compound, silicone compound, metal soap, hydrogenated lecithin, collagen, etc., by a known method. A surface treatment may be performed.

In addition, as the oil agent other than (B), for example, various hydrocarbons, fats and oils, waxes, hardened oils, ester oils, regardless of properties and origins such as vegetable oils, synthetic oils, solid oils, semi-solid oils, etc. , Fatty acids, higher alcohols, silicone oils, fluorine oils, lanolin derivatives, oily gelling agents and the like can be used.
Specifically, petroleum jelly such as petroleum jelly, paraffin wax, ceresin, wax, microcrystalline wax, polyethylene wax, ethylene / propylene copolymer, etc., oil such as owl, beeswax, carnauba wax, candelilla wax, gay wax Waxes such as cetyl isooctanoate, isopropyl myristate, isopropyl palmitate, glyceryl tribehenate, rosin acid pentaerythritol ester, cholesterol fatty acid ester, N-lauroyl-L-glutamate di (cholesteryl / behenyl / octyldodecyl), etc. Esters, fatty acids such as stearic acid, lauric acid, myristic acid, behenic acid, isostearic acid, higher alcohols such as stearyl alcohol, lauryl alcohol, oleyl alcohol Silicone, dimethylpolysiloxane, decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, cross-linked organopolysiloxane, silicone such as fluorine-modified polysiloxane, fluorine oils such as perfluorodecane, perfluoropolyether, etc. Can be used.

  Examples of the solvent other than octyldodecanol include polyvalent solvents such as cetyl alcohol, isostearyl alcohol, behenyl alcohol, propylene glycol, 1,3-butylene glycol, dipropylene glycol, polyethylene glycol, glycerin, diglycerin, and polyglycerin. Alcohols can be used.

Furthermore, as the polymer other than (C), for example, polyethylene wax or the like can be used.
As the antioxidant, natural vitamin E, tocopherols such as d-δ-tocopherol, dibutylhydroxytoluene, butylhydroxyanisole and the like can be used.

  In addition, any surfactant that is commonly used in cosmetics can be used as the surfactant, and nonionic surfactants, anionic surfactants, cationic surfactants, Examples include amphoteric surfactants. For example, glycerin fatty acid ester and its alkylene glycol adduct, polyglycerin fatty acid ester and its alkylene glycol adduct, sorbitan fatty acid ester and its alkylene glycol adduct, sucrose fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyalkylene alkyl Modified organopolysiloxane, polyoxyalkylene modified organopolysiloxane, lecithin and the like can be mentioned.

  Further, examples of the ultraviolet absorber include benzophenone-based, PABA-based, cinnamic acid-based, salicylic acid-based, 4-tert-butyl-4′-methoxydibenzoylmethane, oxybenzone, etc., and humectants include, for example, protein, mucopolysaccharide Examples of cosmetic ingredients such as collagen, elastin and keratin include vitamins, anti-inflammatory agents and herbal medicines, and examples of antiseptics include paraoxybenzoic acid ester, phenoxyethanol, and 1,2-pentanediol.

  The oily cosmetic of the present invention is produced by mixing any of the above-described cosmetic ingredients together with (B) an oil and (C) (α-olefin / vinylpyrrolidone) copolymer in the production of a cosmetic base. be able to. In addition, when an arbitrary cosmetic ingredient is an ingredient that is susceptible to oxidation / decomposition at a high temperature, it can be cooled to an appropriate temperature, for example, about 40 ° C. to 80 ° C., and then only that ingredient can be added.

  The oily cosmetic composition of the present invention is a lipstick, lip balm or lip balm, lip gloss, eye color, eyeliner, eye shadow, eyebrow, mascara, funny, face powder, solid powdered foundation, oily foundation, creamy foundation, Products such as liquid foundation, cheek color, concealer, oil cleansing, massage oil can be used. Moreover, since the oily cosmetics of this invention can adjust viscosity easily, it can be set as the goods of the form filled with a tube and used.

  Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited to these examples. In addition, unless otherwise indicated, the unit of the mixture rate represented in the prescription of an Example is the mass%.

Example 1 Examination of Effect of (α-Olefin / Vinylpyrrolidone) Copolymer on Gel Yield Value An oily cosmetic was prepared according to the formulation shown in Table 1 below, and the gel yield value was measured by the following method.

N-acyl-L-glutamic acid dialkylamide (A) and oil agent (B) are dissolved by heating at 150 ° C., and (eicosene / vinylpyrrolidone) copolymer (C) is added to 120 ° C. and dissolved therein. The components were added and mixed, and after cooling to room temperature and gelling, the gel yield value was measured by the following method.
30 g of each of the prepared oily cosmetics 1 to 3 was filled in a 30 mL jar and allowed to stand at 20 ° C. for 24 hours or more.
Using a rheometer (manufactured by Fudo Kogyo Co., Ltd.) 2020ND-D, measure the gel yield value with a disk-shaped push adapter (15 mm or 25 mm diameter) and a table speed of 30 cm / min. The maximum shear stress up to was measured as the gel yield value.
The results are shown in Table 2 below.

Example 2 Examination of Effect of (α-Olefin / Vinylpyrrolidone) Copolymer on Gel Yield Value An oily cosmetic was prepared according to the formulation shown in Table 3 below, and the gel yield value was measured by the following method.

N-acyl-L-glutamic acid dialkylamide (A) and octyldodecanol are dissolved by heating to 120-140 ° C., and (eicosene / vinylpyrrolidone) copolymer (C) and oil agent (B) are heated to 100-120 ° C. The gel yield value was measured by the following method after cooling to room temperature and gelling.
30 g of each of the prepared oily cosmetics 4 to 6 was filled in a 30 mL jar and allowed to stand at 20 ° C. for 24 hours or more.
Using a rheometer (manufactured by Fudo Kogyo Co., Ltd.) 2020ND-D, measure the gel yield value with a disk-shaped push adapter (15 mm or 25 mm diameter) and a table speed of 30 cm / min. The maximum shear stress up to was measured as the gel yield value.
The results are shown in Table 4 below.

−：低粘度であったため測定不可能

-: Measurement was impossible due to low viscosity

  As shown in Table 4, the gel yield value of the oily cosmetic decreased as the concentration of the (eicosene / vinylpyrrolidone) copolymer added to the gel composition of N-acyl-L-glutamic acid dialkylamide and the oil agent increased. Moreover, the decrease in the gel yield value is most remarkable in the oily cosmetic 4 formulated with N-2-ethylhexanoyl-L-glutamic acid dibutylamide, and then in the oily cosmetic 5 formulated with N-lauroyl-L-glutamic acid dibutylamide. Remarkably, the oily cosmetic 6 in which both gelling agents were blended at a mixing ratio of 1: 1 showed the most gentle reduction in gel yield value.

Example 3 Examination of the Effect of Various (α-Olefin / Vinylpyrrolidone) Copolymers on Gel Yield Value Next, N-2-ethylhexanoyl-L, which showed the mildest decrease in gel yield value in Example 2, was shown. -In oily cosmetics containing glutamic acid dibutylamide and N-lauroyl-L-glutamic acid dibutylamide, the effects of various (α-olefin / vinylpyrrolidone) copolymers on the decrease in gel yield value were investigated.
According to the formulation shown in Table 5 below, an oily cosmetic was prepared in the same manner as in Example 2, and the gel yield value was measured.
The results are shown in Table 6.

−：低粘度であったため測定不可能

-: Measurement was impossible due to low viscosity

As shown in Table 6, in the oily cosmetics formulated with both N-2-ethylhexanoyl-L-glutamic acid dibutylamide and N-lauroyl-L-glutamic acid dibutylamide, all (α-olefin / The gel yield value of oily cosmetics for the vinylpyrrolidone) copolymer decreased. Further, the degree of reduction in the gel yield value of the oily cosmetic varies depending on the type of the (α-olefin / vinyl pyrrolidone) copolymer to be blended, and in Example 2, a mild decrease in the gel yield value was exhibited (eicosene / vinyl pyrrolidone). Oily cosmetics 8 or 9 formulated with (vinylpyrrolidone / hexadecene) copolymer or tricontanyl polyvinylpyrrolidone showed a milder decrease in gel yield value than the copolymer.
Therefore, it was found that these (α-olefin / vinyl pyrrolidone) copolymers can provide oily cosmetics that can be easily adjusted in hardness, viscosity, and gel strength, and that are excellent in stability and use feeling.

Example 4 Examination of Gelation Effect of Amino Acid Gelator by Difference in Oil Agent Next, a method for selecting an oil agent to be used as a base was examined.
2% by mass of N-lauroyl-L-glutamic acid dibutylamide was dissolved in various oil agents shown in Table 7 below, and the gel yield value (N / cm ² ) was measured.
The results are shown in Table 7.

As shown in Table 7, it was found that N-lauroyl-L-glutamic acid dibutylamide can be sufficiently gelled in a wide range of oils such as vegetable oils, hydrocarbon oils, ester oils, and silicone oils. In addition, in the oily cosmetic composition of the present invention, when an oil agent having a gel yield value of 0.5 N / cm ² or more is used, it is easy to adjust hardness, viscosity, and gel strength, and also provides stability and usability. It has been found that excellent oily cosmetic bases and oily cosmetics prepared therefrom are obtained.

Example 5 Examination of effects of gelling agent and (α-olefin / vinylpyrrolidone) copolymer on appearance The effects of gelling agent and (α-olefin / vinylpyrrolidone) copolymer on the appearance of oily cosmetic base were examined. .
An oily cosmetic base was prepared according to the formulation shown in Table 8 below, and the absorbance was measured by the following method.
The prepared oily cosmetic base was filled in a plastic cell having a light path of 1 cm and allowed to stand at 20 ° C. for 1 hour or longer. The sample was measured for absorbance at a wavelength of 660 nm using a spectrophotometer SHIMADZU UV-2450, and the transmittance was calculated by the following equation.
A = −log ₁₀ T (in the formula, absorbance: A, transmittance: T)
The results are shown in Table 8 below.

  As shown in Table 8, the oily cosmetic base prepared by combining the N-acyl-L-glutamic acid dialkylamide (A) and the (α-olefin / vinylpyrrolidone) copolymer is an oil agent and a gel that have been used conventionally. High transparency compared to the gel prepared from the agent. Therefore, it has been shown that oily cosmetics prepared using such an oily cosmetic base have a small effect on the inherent colors of pigments and the like, and exhibit vivid colors. In the oily cosmetic base of the present invention, when the transmittance is 90% or more, the inherent color of pigments and the like in the oily cosmetic prepared therefrom is less affected and exhibits a bright component color. It has been found.

Example 6 Lip Gloss

1〜3の成分を120℃以上で溶解した後、それに4〜10の成分を添加して100℃以上で溶解または均一に分散し、脱泡して充填した。
得られたリップグロスは、透明性が高く、50℃以下の環境下においてパール剤が沈まない、温度安定性に優れたものであった。

After 1 to 3 components were dissolved at 120 ° C. or higher, 4 to 10 components were added thereto and dissolved or uniformly dispersed at 100 ° C. or higher, degassed and filled.
The obtained lip gloss had high transparency, and the pearl agent did not sink under an environment of 50 ° C. or less, and was excellent in temperature stability.

Example 7 Lip Balm

1〜3の成分を120℃以上で溶解した後、それに4〜9の成分を添加して100℃以上で溶解し、脱泡して充填した。
得られたリップバームは、温度経時安定性に優れ、保湿効果に優れたものであった。また、得られたリップバームは、（エイコセン／ビニルピロリドン）コポリマーによる粘性の調整が容易であり、所望のテクスチャーに調整しやすいものであった。

1 to 3 components were dissolved at 120 ° C. or higher, then 4 to 9 components were added thereto, dissolved at 100 ° C. or higher, degassed and filled.
The obtained lip balm was excellent in temperature aging stability and excellent in moisturizing effect. Further, the obtained lip balm was easy to adjust the viscosity with the (eicosene / vinyl pyrrolidone) copolymer, and was easy to adjust to the desired texture.

Example 8 Pour-in lipstick

1〜3の成分を120℃以上で溶解した後、それに4〜12の成分を添加して100℃以上で溶解または均一に分散し、脱泡して充填した。
得られたリップスティックは保湿効果に優れたものであった。また、得られたリップスティックは、（エイコセン／ビニルピロリドン）コポリマーによる粘性の調整が容易であり、所望のテクスチャーに調整しやすいものであった。

After 1-3 components were dissolved at 120 ° C. or higher, 4-12 components were added thereto and dissolved or uniformly dispersed at 100 ° C. or higher, degassed and filled.
The obtained lipstick had an excellent moisturizing effect. The obtained lipstick was easy to adjust the viscosity with the (eicosene / vinyl pyrrolidone) copolymer and easily adjusted to the desired texture.

Example 9 Eyeshadow

1〜3の成分を120℃以上で溶解した後、それに4〜9の成分を添加して100℃以上で溶解または均一に分散し、脱泡して充填した。
得られたアイシャドウは彩度が高く、美しい発色が可能であった。また、保湿効果に優れたものであった。

After 1-3 components were dissolved at 120 ° C. or higher, 4-9 components were added thereto and dissolved or uniformly dispersed at 100 ° C. or higher, degassed and filled.
The obtained eye shadow had high saturation and beautiful color development was possible. Moreover, it was excellent in the moisturizing effect.

Example 10 Teak color

1〜3の成分を120℃以上で溶解した後、それに4〜9の成分を添加して100℃以上で溶解または均一に分散し、脱泡して充填した。
得られたチークは彩度が高く、美しい発色が可能であった。また、保湿効果に優れたものであった。

After 1-3 components were dissolved at 120 ° C. or higher, 4-9 components were added thereto and dissolved or uniformly dispersed at 100 ° C. or higher, degassed and filled.
The obtained teak had high saturation and beautiful color development was possible. Moreover, it was excellent in the moisturizing effect.

Example 11 Oil Cleansing

1〜3の成分を120℃以上で溶解した後、それに4〜7の成分を添加して100℃以上で溶解し、70℃以下まで冷却した後に8および9の成分を徐々に添加し、脱泡して充填した。
得られたオイルクレンジングは、手からこぼれ落ちない程度の粘性を有し、使用性に優れ、テクスチャーに優れたものであった。

1 to 3 components are dissolved at 120 ° C or higher, then 4 to 7 components are added thereto, dissolved at 100 ° C or higher, cooled to 70 ° C or lower, and then 8 and 9 components are gradually added to remove. Foamed and filled.
The obtained oil cleansing had a viscosity that did not spill from the hand, was excellent in usability, and was excellent in texture.

The oily cosmetic base and oily cosmetic of the present invention are lipstick, lip balm or lip balm, lip gloss, eye color, eyeliner, eye shadow, eyebrow, mascara, funny, face powder, solid powder foundation, oily It can be used as cosmetics such as foundation, creamy foundation, liquid foundation, teak color, concealer, oil cleansing, massage oil.
The present invention relates to these oily cosmetic bases and oily cosmetics that are easy to adjust the hardness, viscosity, and gel strength from the low viscosity range to the high viscosity range, and that are excellent in stability and usability.

Claims (9)

(A) N-acyl-L-glutamic acid dialkylamide,
(B) an oil agent in which a gel yield value at 20 ° C. of a gel formed by dissolving 2% by mass of (A) is 0.5 N / cm ² or more, and (C) (α-olefin / vinylpyrrolidone) copolymer Oily cosmetic base. The oily cosmetic base according to claim 1, wherein (A) is either one or both of N-2-ethylhexanoyl-L-glutamic acid dibutylamide and N-lauroyl-L-glutamic acid dibutylamide. (B) from jojoba oil, hydrogenated polyisobutene, polyglyceryl-2 triisostearate, triethylhexanoin, diphenylsiloxyphenyl trimethicone, diisostearyl malate, neopentyl glycol dicaprate and dilauroyl glutamate (phytosteryl / octyldodecyl) The oily cosmetic base according to claim 1 or 2, which is one or more components selected from the group consisting of: 4. (C) is one or more components selected from the group consisting of (eicosene / vinyl pyrrolidone) copolymer, (vinyl pyrrolidone / hexadecene) copolymer and tricontanyl polyvinyl pyrrolidone. The oily cosmetic base according to Item. The oily cosmetic base according to any one of claims 1 to 4, comprising (A) and (C) in a mass ratio of (A) :( C) = 1: 1 to 500: 1. The oily cosmetic base according to claim 5, comprising (A) and (C) in a mass ratio of (A) :( C) = 2: 1 to 200: 1. The oily cosmetic base according to any one of claims 1 to 6, further comprising a solvent capable of dissolving (A) at 150 ° C or lower. The oily cosmetic base according to claim 7, wherein the solvent is octyldodecanol. An oily cosmetic comprising the oily cosmetic base according to any one of claims 1 to 8.