JP5946615B2 - Oily cosmetics - Google Patents

Description

  The present invention relates to an oily cosmetic containing a plant extract extracted with silylated silica.

  Many plant extracts have moisturizing, whitening, and wrinkle-preventing effects on the skin, and are therefore included in skin care products as an essential ingredient. On the other hand, in oily cosmetics such as lip cosmetics, many consumers suffer from rough skin of the lips, and those containing such plant extract are desired.

  So far, lipsticks containing various plant extracts have been known (see, for example, Patent Document 1, Patent Document 2, and Patent Document 3). However, since many of these plant extract extracts are extracted using a polar solvent such as water or ethanol, in oily cosmetics, such a plant extract extract should be blended in a stably dispersed state. Was very difficult.

  On the other hand, for the purpose of pursuing the same skin care effect on the entire face, powders added with a plant extract for use in foundations and the like are also known (for example, Patent Document 4, Patent Document 5, Patent Document 6). See). However, when such a powder is further blended into an oily cosmetic such as a lip cosmetic, the oily component is heated to a fluid state, and then the powder is charged into a container and cooled. The manufacturing method is often used, but in this case, there is a disadvantage that the plant extract is aggregated and settled when the powder is added.

JP-A-10-77221 JP 2003-261435 A JP-A-2-117688 JP 2001-261457 A Japanese Unexamined Patent Publication No. 2000-44828 JP-T-2001-505954

  An object of the present invention is to provide an oily cosmetic capable of stably dispersing a plant extract.

In view of such a situation, as a result of intensive studies, the present inventors have found that a plant extract can be stably dispersed by treating the plant extract with silylated silica in advance in an oily cosmetic. Completed the invention. That is, the oily cosmetic of the present invention is as follows.
(1) An oily cosmetic comprising a plant extract containing a polar solvent as an extraction solvent, wherein the plant extract is treated with silylated silica and then added to the oily component.
(2) The oily cosmetic composition according to (1), wherein the plant extract is selected from one or more of raspberry, honeysuckle, mugwort and aosa.
(3) The oily cosmetic according to (1) or (2), wherein the extraction solvent is an aqueous solution containing 1,3-butanediol and / or ethanol.
(4) The content of the 1,3-butanediol and / or ethanol is 10 to 40% by mass with respect to the total amount of the extraction solvent, according to any one of (1) to (3) The oily cosmetic described.
(5) The oily cosmetic according to any one of (1) to (4), wherein the mass ratio of the plant extract and silylated silica is 2: 3 to 3: 2.
(6) A method of dispersing a plant extract using a polar solvent as an extraction solvent in an oily cosmetic, wherein the plant extract is treated with silylated silica and then added to the oily cosmetic. .

According to the present invention, an oily cosmetic capable of stably dispersing a plant extract can be provided.

(1) Silylated silica of the present invention The oily cosmetic of the present invention is characterized by containing silylated silica as an essential component. The silylated silica has a structure in which the surface thereof is modified with a silyl group having 1 to 2 or more alkyloxy groups having 1 to 5 carbon atoms. Examples of the alkyloxy group having 1 to 5 carbon atoms include a methyloxy group, an ethyloxy group, a propyloxy group, an isopropyloxy group, a butyl group, and the like, preferably a methyloxy group. The silylated silica can be modified with a silyl group having 1 to 3 alkyloxy groups on the silica surface, but is preferably modified with a silyl group having 3 alkyloxy groups. A modification with a trialkyloxy group-modified silyl group can be suitably exemplified. The alkyl group in such a silylating agent is preferably an alkyl group having 6 to 30 carbon atoms. Such silylated silica has the effect of stably dispersing the plant extract described later in the oily cosmetic of the present invention.

The particle size of the silylated silica may be 3 μm to 30 μm, and particularly preferably 13 μm to 20 μm. This is because if it is too small, the effect of silylation may not be sufficient, and if it is too large, the usability may be impaired.

In the oily cosmetic of the present invention, the content of the silylated silica for stably dispersing the plant extract extract described below is preferably 0.005 to 0.5% by mass with respect to the total amount of the oily cosmetic, 0.01 to 0.1% by mass is more preferable. If the blending amount is less than 0.005% by mass, the plant extract is aggregated. On the other hand, if it exceeds 0.5% by mass, the feeling of use may be unfavorable.

The silylated silica can be prepared by surface-treating the silica surface with a corresponding silylating agent having an alkyloxy group according to a conventional method. However, since there are commercially available products, such commercially available products can be used. Is possible. Examples of commercially available products include “DOW CORNING (registered trademark) VM-2270 AEROGEL FINE PARTICLES” (manufactured by Toray Dow Corning), “Aerosil RY300” (manufactured by Nippon Aerosil Co., Ltd.), and the like.

(2) Plant extract of the present invention The oily cosmetic of the present invention is characterized by containing a plant extract as an essential component. Since these plant extracts have functions such as a moisturizing effect, a whitening effect, and a sedative effect in cosmetics, they are widely used for the purpose of activating various metabolisms of the skin. The extract as used herein specifically refers to the extract itself, a fraction of the extract, a purified fraction, and a generic name of the extract or fraction.

The plant extract in the present invention is preferably selected from one or more of raspberries belonging to the family Rosaceae, honeysuckle belonging to the family Lonicera, mugwort belonging to the family Asteraceae, and Aosa belonging to the family Lamiaceae. The plant part used for the production of the extract is not particularly limited, and whole plants can be used. Of course, the plant body, the above-ground part, the rhizome part, the tree trunk part, the leaf part, the stem part, the flower spike, the flower bud. It is also possible to use only parts such as fruits. As the plant extract, any of compressed effluent, steam distillate, distillate, and solvent extract can be used. In particular, since the compressed effluent or solvent extract can selectively obtain useful components. preferable. The solvent used for solvent extraction is preferably a polar solvent, for example, water, alcohols such as 1,3-butanediol, ethanol and isopropanol, esters such as ethyl acetate and methyl formate, acetone, Preferred examples include ketones such as methyl ethyl ketone, and ethers such as diethyl ether and tetrahydrofuran, among which aqueous solutions containing 1,3-butanediol and / or ethanol are preferred. In this case, the content of 1,3-butanediol and / or ethanol is preferably 10 to 40% by mass, and more preferably 15 to 35% by mass with respect to the total amount of the solvent. Extraction may be performed by adding 1 to 10 parts by mass of a solvent to 1 part by mass of the plant or its dried product, and immersing it for several days at room temperature and for several hours at a temperature near the boiling point. If necessary, insoluble matter may be removed by filtration. What is necessary is just to distill under reduced pressure when concentrating. In the case of a pressed effluent, for example, 1,3-butanediol and / or ethanol is added to the fruit juice insolubles by filtration and the final concentration is 10 to 40% by mass with respect to the total amount of the juice. Preferably, it is added so as to be 15 to 35% by mass. Where the amount exceeds this range, it is difficult to stably disperse in the oily cosmetic of the present invention. Such a plant extract can be used by adjusting as described above, or a commercially available product can be purchased and used.

In the oily cosmetic of the present invention, the content of the plant extract extract is preferably 0.005 to 0.5% by mass, more preferably 0.01 to 0.1% by mass with respect to the total amount of the oily cosmetic. If the blending amount is less than 0.005% by mass, the skin care effect of the plant extract cannot be exhibited.

  In the oily cosmetic of the present invention, the mass ratio of the plant extract and the silylated silica is preferably 2: 3 to 3: 2. Where the amount exceeds this range, it is difficult to stably disperse in the oily cosmetic of the present invention.

In the oily cosmetic composition of the present invention, as a method for treating the plant extract with the silylated silica, it is preferable to take a step of mixing these two components according to a conventional method. By adding and stirring this mixture to the oil component, the plant extract can be stably dispersed in the oily cosmetic of the present invention. In the cosmetics of this invention, the arbitrary component normally used by cosmetics other than the said essential component can be contained in the range which does not impair the effect of this invention.

Examples of such optional ingredients include macadamia nut oil, avocado oil, corn oil, olive oil, rapeseed oil, sesame oil, castor oil, safflower oil, cottonseed oil, jojoba oil, coconut oil, palm oil, liquid lanolin, and hardened coconut oil. Oil, wax, liquid paraffin, squalane, pristane, ozokerite, paraffin, ceresin, petrolatum, oil, wax, liquid wax, liquid paraffin, squalane, bean wax, candelilla wax, carnauba wax, ibotarou, lanolin, reduced lanolin, hard lanolin, jojoba wax , Hydrocarbons such as microcrystalline wax, higher fatty acids such as oleic acid, isostearic acid, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, undecylenic acid, cetyl alcohol, stearyl alcohol, isostear Alcohol, behenyl alcohol, octyldodecanol, higher alcohol such as myristyl alcohol, cetostearyl alcohol, cetyl isooctanoate, isopropyl myristate, hexyldecyl isostearate, diisopropyl adipate, di-2-ethylhexyl sebacate, cetyl lactate, apple Diisostearyl acid, ethylene glycol di-2-ethylhexanoate, neopentyl glycol dicaprate, glycerin di-2-heptylundecanoate, glycerin tri-2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, Synthetic ester oils such as trimethylolpropane triisostearate and pentane erythritol tetra-2-ethylhexanoate, dimethylpolysiloxane, Chain polysiloxane such as siloxane, diphenylpolysiloxane, cyclic polysiloxane such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexanesiloxane, amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified polysiloxane, Oil agents such as silicone oil such as modified polysiloxane such as fluorine-modified polysiloxane, anionic surfactants such as fatty acid soap (sodium laurate, sodium palmitate, etc.), potassium lauryl sulfate, triethanolamine ether of alkyl sulfate, chloride Cationic surfactants such as stearyltrimethylammonium, benzalkonium chloride, laurylamine oxide, imidazoline-based amphoteric surfactants (2-cocoyl-2-imi Dazolinium hydroxide-1-carboxyethyloxy disodium salt, etc.), betaine surfactants (alkyl betaines, amide betaines, sulfobetaines, etc.), amphoteric surfactants such as acylmethyl taurine, sorbitan fatty acid esters ( Sorbitan monostearate, sorbitan sesquioleate, etc.), glycerin fatty acids (such as glyceryl monostearate), propylene glycol fatty acid esters (such as propylene glycol monostearate), hardened castor oil derivatives, glycerin alkyl ether, POE sorbitan fatty acid ester (POE sorbitan monooleate, polyoxyethylene sorbitan monostearate, etc.), POE sorbite fatty acid esters (POE-sorbitol monolaurate, etc.), POE glycerin fat Esters (POE-glycerol monoisostearate, etc.), POE fatty acid esters (polyethylene glycol monooleate, POE distearate, etc.), POE alkyl ethers (POE2-octyldodecyl ether, etc.), POE alkylphenyl ethers (POE nonylphenyl) Ethers, etc.), Pluronic types, POE / POP alkyl ethers (POE / POP2-decyltetradecyl ether, etc.), Tetronics, POE castor oil / hardened castor oil derivatives (POE castor oil, POE hardened castor oil, etc.), Nonionic surfactants such as sucrose fatty acid ester and alkyl glucoside, polyethylene glycol, glycerin, 1,3-butanediol, erythritol, sorbitol, xylitol, maltitol, propylene Polyols such as recall, dipropylene glycol, diglycerin, isoprene glycol, 1,2-pentanediol, 2,4-hexylene glycol, 1,2-hexanediol, 1,2-octanediol, pyrrolidone carboxylic acid Moisturizing ingredients such as sodium, lactic acid, sodium lactate, guar gum, quince seed, carrageenan, galactan, gum arabic, pectin, mannan, starch, xanthan gum, curdlan, methylcellulose, hydroxyethylcellulose, carboxymethylcellulose, methylhydroxypropylcellulose, chondroitin sulfate , Dermatan sulfate, glycogen, heparan sulfate, hyaluronic acid, sodium hyaluronate, tragacanth gum, keratan sulfate, chondroitin, mucoitin sulfate, hyaluronan Droxyethyl guar gum, carboxymethyl guar gum, dextran, keratosulfuric acid, locust bean gum, succinoglucan, carolinic acid, chitin, chitosan, carboxymethylchitin, agar, polyvinyl alcohol, polyvinylpyrrolidone, carboxyvinyl polymer, sodium polyacrylate, Thickeners such as polyethylene glycol, surface may be treated, powders such as mica, silica, calcium carbonate, magnesium carbonate, aluminum oxide, barium sulfate, surface may be treated, bengara, yellow Inorganic pigments of iron oxide, black iron oxide, cobalt oxide, ultramarine, bitumen, titanium oxide, zinc oxide, surface treated pearlescent agents such as titanium mica, fish phosphorus foil, bismuth oxychloride, lake Red 202, red 228, Red 226, Yellow 4, Blue 404, Yellow 5, Red 505, Red 230, Red 223, Orange 201, Red 213, Yellow 204, Yellow 203, Blue 1 Organic dyes such as green 201, purple 201 and red 204, polyethylene powder, polymethyl methacrylate, nylon powder, organic powders such as organopolysiloxane elastomer, paraaminobenzoic acid UV absorber, anthranilic acid UV absorbers, salicylic acid UV absorbers, cinnamic acid UV absorbers, benzophenone UV absorbers, sugar UV absorbers, 2- (2′-hydroxy-5′-t-octylphenyl) benzotriazole, 4 UV absorbers such as methoxy-4'-t-butyldibenzoylmethane, lower alcohols such as ethanol and isopropanol Kind, etc. can be preferably exemplified.

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

<Examples 1 to 14 >
A lip cosmetic, which is an oily cosmetic of the present invention, was prepared according to the formulation shown in Table 1 below. That is, (A) was mixed and heated to 80 ° C., and (B) previously mixed with a Henschel mixer was added and stirred. It cooled, stirring, and obtained the lip cosmetics of Examples 1-4 of this invention. Operating in an analogous way were prepared also Example 5-1 4. Examples 1-4 but was not observed at all precipitation and coagulation, in Example 5-1 4 flocculation, sedimentation was observed.

<Example 1 5>
According to the formulations in Table 2 shown below, using the same method as in Example 1 to 1 4, it is an oily cosmetic of the present invention, to produce a lip cosmetic and Comparative Examples 1 to 3 Example 1 5. In Examples 15 and 5, neither aggregation nor sedimentation was observed, but in Comparative Examples 1 to 3 , aggregation and sedimentation were observed. That is, it can be seen that silylated silica is essential in the oily cosmetic of the present invention.

<Example 1 6>
According to the formulations shown in Table 3 shown below, using the same method as in Example 1 to 1 4, it is an oily cosmetic of the present invention, to produce a lip cosmetic and Comparative Examples 4-6 Example 1 6. Comparative Example 6 was prepared by mixing all the formulation components, heating to 80 ° C., and cooling with stirring. Although Example 1 6 was not observed at all nor precipitation and coagulation, in Comparative Examples 4 to 6 aggregation, precipitation was observed. That is, in the oily cosmetic of the present invention, it can be seen that it is essential that the plant extract be treated with silylated silica in advance.

Claims (6)

  An oily cosmetic comprising a plant extract containing a polar solvent as an extraction solvent, wherein the plant extract is treated with silylated silica and then added to the oily component.   The oily cosmetic composition according to claim 1, wherein the plant extract is selected from one or more of raspberry, honeysuckle, mugwort and aosa. The oily cosmetic according to claim 1 or 2, wherein the extraction solvent is an aqueous solution containing 1,3-butanediol and / or ethanol. The oily property according to any one of claims 1 to 3, wherein the content of the 1,3-butanediol and / or ethanol is 10 to 40% by mass with respect to the total amount of the extraction solvent. Cosmetics.   The oily cosmetic according to any one of claims 1 to 4, wherein a mass ratio of the plant extract to silylated silica is 2: 3 to 3: 2. A method for dispersing a plant extract using a polar solvent as an extraction solvent in an oily cosmetic, wherein the plant extract is treated with silylated silica and then added to the oily cosmetic.