JP2010265225A - Makeup cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a makeup cosmetic that can be washed away with warm water and exhibits excellent usability. <P>SOLUTION: The makeup cosmetic comprises a core-shell type polymer emulsion, a water-holding oily agent and microcrystalline wax with a mass ratio of the water-holding oily agent to the microcrystalline wax of 1:1 to 1:5 and contains polyoxyethylene sorbitan beeswax. The makeup cosmetic is preferably employed as an eye color or an eye liner. The makeup cosmetic exhibits excellent usability as it can be washed way with warm water while it is waterproof-type one. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to a makeup cosmetic, and more particularly, to a makeup cosmetic suitable for an eye color, an eyeliner, a mascara, or the like that can be washed off and has a waterproof function.

In cosmetics, in particular, makeup cosmetics, especially cosmetics such as mascara and eyeliner used around the eyes, it is an important requirement to have a water-resistant function (waterproof function). This is because in such cosmetics, since the color difference from the skin is large, the non-uniformity due to water, sweat, or the like causes the optical effect of make-up to be greatly impaired. A typical example of such makeup breakage is the so-called raccoonization phenomenon in which the eye makeup cosmetic spreads around the entire eye and becomes a patch.

  For the purpose of suppressing the decrease in the makeup effect due to such makeup collapse, a number of cosmetics with a hydrophobic film formed to enhance the waterproof function have been developed. In such waterproof cosmetics, A dilemma has arisen that a special cleansing material using a solvent must be used for the removal. That is, it has been desired to develop a cosmetic that has a waterproof function during makeup and that can be easily removed.

  Special cleansing materials such as solvents by containing a resin emulsion composed of one or more polymers and / or copolymers selected from acrylic acid and methacrylic acid and esters thereof and a polyhydric alcohol There are known makeup cosmetics that can be washed away without using a soap (see, for example, Patent Documents 1 and 2). However, washing requires a detergent such as soap, and only an aqueous detergent is used. Since there is a clear difference between the removal and the treatment with the combination of the cleansing agent and the aqueous cleaning agent, it can be said to be labor saving at the expense of the function.

  On the other hand, as eye makeup cosmetics that have a waterproof function and can be washed away with water, there are those using self-emulsifying surfactants such as polyoxyethylene sorbitan beeswax (see, for example, Patent Document 3).

On the other hand, a makeup cosmetic containing a core-shell type polymer emulsion, (B) a water-holding oil, and (C) a microcrystalline wax, wherein (D) a mass ratio of the water-holding oil and the microcrystalline wax Is 1: 1 to 1: 5, and (E) a cosmetic containing polyoxyethylene sorbitan beeswax has not been known at all, and the cosmetic having such a structure has a waterproof function, It could not be predicted that it has the property of being easily removed by warm water.

JP-A-6-239718 JP-A-8-198729 JP 2007-246524 A

The present invention has been made under such circumstances, and provides a makeup cosmetic with excellent usability that can be washed away with warm water while being a waterproof type. This is the issue.

In view of such a situation, the present inventors searched for a makeup cosmetic that can be washed off with warm water while being a waterproof type, and as a result of earnest research efforts, the core-shell type polymer emulsion and ( B) A makeup cosmetic containing a water-containing oil agent and (C) a microcrystalline wax, wherein (D) the mass ratio of the water-containing oil agent and the microcrystalline wax is 1: 1 to 1: 5. And (E) by containing polyoxyethylene sorbitan beeswax, it is found that a makeup cosmetic that can be washed away with warm water can be obtained even though it is such a waterproof type, and the invention is completed. It came to. That is, the present invention is as follows.
<1> A makeup cosmetic containing (A) a core-shell type polymer emulsion, (B) a water-containing oil agent, and (C) a microcrystalline wax, (D) the water-containing oil agent and the microcrystalline wax. The make-up cosmetics characterized by containing 1: 1 to 1: 5 and (E) polyoxyethylene sorbitan beeswax.
<2> The makeup cosmetic according to <1>, wherein the makeup cosmetic is a mascara or an eyeliner.
<3> The core-shell polymer emulsion has a copolymer layer of acrylic acid, ethyl acrylate, octyl acrylate, and methacrylic acid, and an acrylic acid, 2-ethylhexyl acrylate, methyl methacrylate, and α-methylstyrene copolymer layer. The makeup cosmetic according to <1> or <2>, which is a core-shell copolymer emulsion.
<4> The makeup cosmetic according to any one of <1> to <3>, which is a mascara or eyeliner having a waterproof function capable of being washed off.

  ADVANTAGE OF THE INVENTION According to this invention, although it is a waterproof type, the makeup cosmetics excellent in usability which can be washed away with warm water can be provided.

(1) Core-shell type polymer emulsion which is an essential component of the cosmetic of the present invention The makeup cosmetic of the present invention is characterized by containing a core-shell type polymer emulsion as an essential component. The core-shell type emulsion is composed of a core-shell type polymer composed of a layer composed only of acrylic acid, methacrylic acid, and an alkyl ester thereof, and a polymer layer having an aromatic property such as styrene or α-methylstyrene in a combination thereof. preferable. All of these components are cosmetic raw materials and already have commercial products. Preferable ones include “polyjoint JN” (made by Taisei Kako Co., Ltd., 50% by weight of resin) which is an acrylic acid / ethyl acrylate / octyl acrylate / methacrylic acid copolymer by emulsion polymerization, acrylic acid / acrylic “Emapoly CE-119N” (sold by Nikko Chemicals Co., Ltd.), which is a core-shell type copolymer of acid-2-ethylhexyl, methyl methacrylate and α-methylstyrene, is particularly preferable. These polymers or copolymers may contain only 1 type, and may contain 2 or more types in combination. The preferable content of the core-shell type polymer emulsion in the cosmetic of the present invention is 2 to 15% by mass, more preferably 5 to 10% by mass in terms of the amount of resin with respect to the entire cosmetic. This is because if the amount is too large, the film may be too hard, and if the amount is too small, the film may not be formed sufficiently.

(2) Water-repellent oil agent which is an essential component of the cosmetic composition of the present invention The makeup cosmetic composition of the present invention is characterized by containing a water-hydrate oil composition as an essential component. Here, the hydrated oil agent is an oil agent that can hydrate water by hydrogen bonding or the like. Due to this action, pigments and the like are fixed to the skin together with the microcrystalline wax described later in the low temperature range, but in the case of warm water, the fixing structure is loosened and, together with the polyoxyethylene sorbitan beeswax described later, promotes the removal of the coating, thereby providing a special cleansing. The effect of washing away without using the agent, that is, the waterproof function is exhibited. In addition, cold water here is defined as water of less than 36 ° C., and warm water is defined as water of 36 ° C. or more and 45 ° C. or less. The water retention test method is shown below.

(Hydrophilic test method)
According to the British Pharmacopoeia (BP), the water content measurement method of lanolin, kneaded while adding 0.2 to 0.5 ml of purified water to 10 g of the sample at a time, and the point at which water did not enter was the end point. Indicated.

As a result of the above water-holding test, oils with high water-holding properties include lanolin derivatives such as lanolin, lanolin fatty acid, lanolin alcohol, lanolin acetate, hydroxylanolin, shea fat, phytosteryl hydroxystearate, octyldodecyl 12-stearoyloxystearate, N- Examples include lauroyl-L-glutamate di (phytosteryl / behenyl / 2-octyldodecyl), dimer acid diol derivatives, and the like, and these can be used alone or in combination. Of these, phytosteryl hydroxystearate, octyldodecyl 12-stearoyloxystearate, and di (N-lauroyl-L-glutamate) (phytosteryl / behenyl / 2-octyldodecyl) are particularly preferable. Such an oil agent is a raw material for cosmetics and already has a commercial product. Preferred examples of such commercially available products include “Saracos FH” (manufactured by Nisshin Oilio Co., Ltd.), “Risocasta ODSSH” (manufactured by Higher Alcohol Industry Co., Ltd.), “El Deu PS-304” (manufactured by Ajinomoto Co., Inc.), and the like. In the cosmetic of the present invention, the preferred content of the water hydrated oil is 0.5 to 5% by mass, more preferably 1 to 4% by mass, based on the entire cosmetic. This is because if it is too small, it may be difficult to wash away even with warm water, and if it is too much, it may be washed away even with cold water.

(3) Microcrystalline wax which is an essential component of the cosmetic of the present invention The make-up cosmetic of the present invention is characterized by containing microcrystalline wax as an essential component. Microcrystalline wax is a soft wax that can be shredded with fingers, etc., and the soft wax structure does not collapse in the low temperature range, and makes it easy to separate with water under conditions higher than body temperature. What makes this action remarkable is the water-holding oil which is the essential component. A preferred mass ratio of the water-holding oil to the microcrystalline wax is 1: 1 to 1: 5, more preferably 1: 1 to 1: 3. This is because such a mass ratio makes the temperature sensitivity of the coating with microcrystalline wax favorable. Moreover, in the cosmetics of this invention, preferable content of microcrystalline wax is 1-10 mass%, More preferably, it is 2-6 mass%. In addition, in the cosmetic of this invention, the form which does not contain hydrocarbon other than microcrystalline wax is preferable when maintaining the control function of cleansing temperature. Further, it is preferable that the waxy oily component not classified as hydrocarbon is 5% by mass or less, more preferably 3% by mass or less.

(4) Polyoxyethylene sorbitan beeswax which is an essential component of the makeup cosmetic of the present invention The makeup cosmetic of the present invention is characterized by containing polyoxyethylene sorbitan beeswax. Such a component is a surfactant and is characterized by having properties as a wax. Because it is highly hydrophilic at low temperatures, it can be hydrated and contained in the cosmetic film, but in a warm water stream, etc., it tilts toward the lipophilic side, making the film structure made of microcrystalline wax and water hydrated oil into micelles It shows the work to do. Thereby, in warm water higher than the skin temperature, the coating film formed by the cosmetic of the present invention is emulsified and detached from the skin, and can be washed away. In order to achieve such an effect, the average number of added moles of polyoxyethylene is preferably 1 to 5, and particularly preferably around 2. Moreover, preferable content of this component is 0.5-5 mass%, More preferably, it is 1-3 mass%.

(5) Makeup cosmetics of the present invention The makeup cosmetics of the present invention can be applied without particular limitation as long as they are ordinary cosmetics and are known to take a liquid form. Examples thereof include makeup cosmetics such as lip color, teak color, eye color, eyeliner, foundation, and concealer, and protective cosmetics such as UV protective cosmetics. Particularly preferred is a cosmetic that is applied to the eye part of the eye color or eyeliner having the highest effect. In addition, the cosmetic of the present invention can contain optional components that are usually used in cosmetics as long as the effects of the present invention are not impaired. Such optional ingredients include, for example, macadamia nut oil, avocado oil, corn oil, olive oil, rapeseed oil, sesame oil, castor oil, safflower oil, cottonseed oil, jojoba oil, palm oil, palm oil, hardened palm oil, hardened oil , Owl, hydrogenated castor oil, beeswax, candelilla wax, carnauba wax, ibotarou, jojoba wax and other oils, waxes, liquid paraffin, squalane, pristane, ozokerite, paraffin, ceresin, petrolatum and other hydrocarbons, oleic acid, isostearic acid Higher fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, undecylenic acid, higher alcohols such as cetanol, oleyl alcohol, stearyl alcohol, octyldodecanol, cetyl isooctanoate, isopyristyl myristate Pill, hexyldecyl isostearate, diisopropyl adipate, di-2-ethylhexyl sebacate, cetyl lactate, diisostearyl malate, ethylene glycol di-2-ethylhexanoate, neopentyl glycol dicaprate, di-2-heptylundecane Synthetic ester oils such as acid glycerin, glyceryl tri-2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, anion interfaces such as sulfosuccinate and polyoxyethylene alkyl sodium sulfate Activators, amphoteric surfactants such as alkylbetaine salts, cationic surfactants such as dialkylammonium salts, sorbitan fatty acid esters, fatty acid monoglycerides, polyoxyethylenes thereof Preferred examples include additives, nonionic surfactants such as polyoxyethylene alkyl ethers, polyoxyethylene fatty acid esters, thickening / gelling agents, antioxidants, ultraviolet absorbers, colorants, preservatives, and powders. it can. Among these, a polyhydric alcohol can be particularly preferably contained as a plasticizer for the above resin emulsion for the purpose of softening the film and improving the adhesion to the skin. Examples of the polyhydric alcohol include polyethylene glycol, glycerin, 1,3-butylene glycol, erythritol, sorbitol, xylitol, maltitol, propylene glycol, dipropylene glycol, diglycerin, isoprene glycol, 1,2-pentanediol, 2, It may contain one or more selected from 4-hexanediol, 1,2-hexanediol, 1,2-octanediol, 1,3-butylene glycol, cetanol, and 1,2-pentanediol. preferable. A particularly preferred form is a form containing 1,3-butylene glycol and 1,2-pentanediol. In the present invention, the content of the polyhydric alcohol is preferably 1 to 20% by mass, more preferably 5 to 10% by mass, based on the entire cosmetic. This is because when the amount is too large, the film may be too soft, and when the amount is too small, the adhesion of the film to the skin may be reduced.

The cosmetic of the present invention can be produced by treating these essential components and optional components according to a conventional method. The makeup cosmetic of the present invention thus obtained can provide excellent eye care without impairing usability in its application, and can fully express the original beautiful cosmetic finish.

  Hereinafter, the present invention will be described in more detail with reference to examples, but it goes without saying that the present invention is not limited to such examples.

<Examples 1-9>
Eyeliners 1 to 9, which are makeup cosmetics of the present invention, were prepared according to the formulations shown in Table 1 below. That is, the temperature was adjusted to 80 ° C., b was added to emulsify, and the mixture was stirred and cooled to obtain an emulsion intermediate work product. After adding the ingredient C to this intermediate work-in-process and kneading, it was passed through three rolls and the dispersion was made uniform to obtain eyeliners 1 to 9 which are make-up cosmetics of the present invention. In the same manner, in the eyeliner 1, Comparative Example 1 in which “Emapoly CE-119N” was replaced with microcrystalline wax, Comparative Example 2 in which “Saracos FH” was replaced with heavy liquid paraffin, and Microcrystalline wax Comparative Example 3 in which a 1: 1 mixture of heavy liquid paraffin and solid paraffin was substituted, and Comparative Example 4 in which polyoxyethylene (2) sorbitan beeswax was replaced with polyoxyethylene (2) stearic acid were also produced. Further, in the same manner, Comparative Examples 5 to 12 were also produced according to the formulation in Table 1.

<Test example>
The eye color of each Example and Comparative Example obtained above was evaluated for water resistance, cleansing properties, and usability (finished, makeup retention effect).

(1) Water resistance After applying the eye color of each Example and Comparative Example to a quartz plate using a 0.5 mil doctor blade and sufficiently drying using a dryer, the ultraviolet color was measured at 220 nm using an ultraviolet-visible spectrophotometer. The ultraviolet transmittance was measured. Tap water was discharged from the faucet at a flow rate of 5 L / min, and a quartz plate was passed through the running water for 1 minute. After naturally drying the quartz plate, the ultraviolet transmittance at 220 nm was measured in the same manner as described above. The water resistance was evaluated based on the following criteria based on the ratio of the ultraviolet transmittance before and after the water resistance test.

(Evaluation criteria)
A: Transmittance before test / transmittance after test = 0.95 or more O: Transmittance before test / transmittance after test = 0.90 or more and less than 0.95 Δ: Transmittance before test / transmittance after test = 0. 70 or more and less than 0.90 ×: transmittance before test / transmittance after test = 0.70

(2) Cleansing properties After applying the eye color of each Example and Comparative Example to the inner side of the lower arm, it was washed away with warm water at 37 ° C., and the color difference (ΔE value) from the untreated control part was measured.

(3) Usability The finish and makeup lasting effect when the eye color of each Example and Comparative Example was applied to the eyes of 10 female panelists were: ◎: very good, ○: good, △: normal, ×: poor Sensory evaluation was performed according to the evaluation criteria.

The results are shown in Table 2. It can be seen that the eye color of the present invention is excellent in water resistance and cleansing properties and is very good in use.

  The present invention can be applied to makeup cosmetics such as eye colors or eyeliners.

Claims (4)

(A) A makeup cosmetic containing a core-shell polymer emulsion, (B) a water-containing oil agent, and (C) a microcrystalline wax, wherein (D) the mass of the water-containing oil agent and the microcrystalline wax A makeup cosmetic characterized in that the ratio is 1: 1 to 1: 5 and (E) polyoxyethylene sorbitan beeswax is contained. 2. The makeup cosmetic according to claim 1, wherein the makeup cosmetic is a mascara or an eyeliner. The core-shell type polymer emulsion is a core-shell type copolymer having a copolymer layer of acrylic acid, ethyl acrylate, octyl acrylate, and methacrylic acid and an acrylic acid / acrylic acid-2-ethylhexyl / methyl methacrylate / α-methylstyrene copolymer layer. The makeup cosmetic according to claim 1 or 2, wherein the makeup cosmetic is an emulsion. The makeup cosmetic according to any one of claims 1 to 3, wherein the makeup cosmetic is a mascara or eyeliner having a waterproof function capable of being washed off.