JP2005306849A - O/w-type cake cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prepare an O/W-type cake cosmetic having good portability, giving refreshing feeling to the skin and having excellent adhesiveness to the skin and makeup durability. <P>SOLUTION: This O/W-type cake cosmetic is produced by compounding (a) agar, (b) sodium polyaspartate, (c) water and (d) an oil. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to an oil-in-water solid cosmetic obtained by solidifying an oil-in-water cosmetic with agar, and further relates to an oil-in-water solid cosmetic characterized by using agar and sodium polyaspartate in combination. It is. More specifically, the present invention relates to an oil-in-water solid cosmetic that has a good fresh feeling and has excellent adhesion to the skin and makeup sustainability.

Oil-in-water solid cosmetics are cosmetics obtained by solidifying the water of the outer phase commonly used for foundations, blushers, white powders, etc. with a gelling agent, and have a fresh feeling of use but good portability. As a cosmetic formulation that has gained popularity in the market.

In such conventional oil-in-water solid cosmetics, agar, water-swellable clay minerals, and the like have been used as gelling agents for solidifying water in the outer phase. (For example, see Patent Document 1)

JP-A-8-208434 (page 1 to page 10)

However, as in the technique described in Patent Document 1, an oil-in-water type solid cosmetic using agar or water-swellable clay mineral as a water gelling agent has a high hydrophilicity of the cosmetic film formed on the skin. Therefore, due to the effects of sweat secreted from the skin over time, the cosmetic film may float or collapse over time, and the development of technology to further improve makeup sustainability is desired. It was.

In view of such a situation, the present inventors have intensively studied. As a result, when agar and sodium polyaspartate are used in combination as a water-soluble polymer, the adhesion to the skin is improved. The present invention was completed by finding that an oil-in-water type solid cosmetic having excellent properties can be obtained.

That is, the present invention comprises the following components (a) to (d);
(A) Agar (b) Sodium polyaspartate (c) Water (d) An oil-in-water solid cosmetic characterized by comprising an oil agent is provided.

Moreover, 0.01-5 mass% of components (b) are mix | blended, The said oil-in-water type solid cosmetics characterized by the above-mentioned are provided.

Further, the present invention provides the oil-in-water type solid cosmetic, wherein powder is blended as the component (e).

The oil-in-water solid cosmetic of the present invention is a cosmetic that has good portability, a fresh feeling of use, and excellent skin adhesion and makeup sustainability.

The component (a) agar used in the present invention is a component that gels water into a solid state, and generally known agar can be used. In addition, the agar of component (a) is so-called low-strength agar (for example, JP-A-5-31) obtained by cleaving molecules by acid treatment or the like in order to adjust the jelly strength.
7008). In the present invention, when the acid-treated low-strength agar is selected as the component (a), an oil-in-water solid cosmetic material that is particularly excellent in smooth and fresh use feeling can be obtained.

The blending amount of the component (a) in the oil-in-water solid cosmetic of the present invention is not particularly limited.
. 1 to 10% by mass (hereinafter simply referred to as “%”) is preferable, and 0.3 to 7% is particularly preferable. When component (a) is used within this range, it is possible to obtain an oil-in-water solid cosmetic with particularly excellent fresh feeling while maintaining good shape retention.

The component (b) sodium polyaspartate used in the present invention is a component that enhances makeup sustainability by bringing the cosmetic film into close contact with the skin. Such a component (b) is obtained by polymerizing L-aspartic acid, D-aspartic acid or a mixture thereof by α or β bond. Specific examples include those obtained by polycondensation of L-aspartic acid under a phosphoric acid catalyst and hydrolysis after removal of the catalyst.

The average molecular weight of component (b) sodium polyaspartate is 1,000 to 10,
000 is preferable, and 3,000 to 5,000 is particularly preferable. When the average molecular weight of the component (b) is within this range, an oil-in-water solid cosmetic with particularly excellent adhesion to the skin can be obtained.

As such a sodium polyaspartate having an average molecular weight of 3,000 to 5,000, a commercially available product such as Aqua Dew SPA-30 (manufactured by Ajinomoto Co., Inc.), which is a 30% aqueous solution, can be used.

The blending amount of the component (b) in the oil-in-water solid cosmetic of the present invention is not particularly limited.
. 01 to 5% is preferable, and 0.3 to 3% is particularly preferable. When component (b) is used within this range, an oil-in-water solid cosmetic with particularly excellent adhesion to the skin can be obtained while maintaining a fresh feeling of use.

Component (c) water used in the present invention is a component that forms the outer phase of an oil-in-water solid cosmetic, and is a component that embodies a fresh feeling of use.

Although the compounding quantity of the component (c) in the oil-in-water type solid cosmetic of this invention is not specifically limited, 4
0 to 95% is preferable. When component (c) is used within this range, it is possible to obtain an oil-in-water type solid cosmetic that is particularly excellent in fresh feeling while maintaining good shape retention.

The component (d) oil used in the present invention is a component that improves adhesion to the skin and gives an emollient feeling, and is not particularly limited as long as it is an oil used in normal cosmetics. Animal oil, vegetable oil, synthetic oil Regardless of origin, such as oil and properties of solid oil, semi-solid oil, liquid oil, volatile oil, etc., hydrocarbons, fats and oils, waxes, hardened oils, ester oils, fatty acids, higher alcohols, Silicone oils, fluorine-based oils, lanolin derivatives and the like can be used. Specifically, hydrocarbons such as liquid paraffin, squalane, petrolatum, polyisobutylene, polybutene, paraffin wax, ceresin wax, microcrystalline wax, montan wax, Fischer-Tropsch wax, polyethylene wax, ethylene / propylene copolymer, olive oil, castor Oils, mink oil, macadamia nut oil, oils such as owl, beeswax, carnauba wax, candelilla wax, waxes such as gay wax, jojoba oil, cetyl isooctanoate, isopropyl myristate, isopropyl palmitate, myristic acid Octyldodecyl, trimethylolpropane triisostearate, pentaerythritol tetra-2-ethylhexanoate, glyceryl trioctanoate, polyisostearate Glyceryl, diglyceryl triisostearate, glyceryl tribehenate, rosin acid pentaerythritol ester, dipentaerythritol fatty acid ester, neopentyl glycol dioctanoate, cholesterol fatty acid esters, N- lauroyl -L-
Glutamate di (cholesteryl / behenyl / octyldodecyl), N-lauroyl-L-
Esters such as di-glutamate (cholesteryl octyldodecyl), N-lauroyl-L-glutamate di (phytosteryl behenyl 2-octyldodecyl), N-lauroyl-L-glutamate di (phytosteryl 2-octyldodecyl), stearin acid,
Fatty acids such as lauric acid, myristic acid, behenic acid, isostearic acid, oleic acid and rosin acid, higher alcohols such as stearyl alcohol, cetyl alcohol, lauryl alcohol, oleyl alcohol, isostearyl alcohol and behenyl alcohol, partially crosslinked organopoly Siloxane, partially cross-linked methylphenyl polysiloxane, polyether-modified organopolysiloxane, methacryl-modified organopolysiloxane, stearyl-modified organopolysiloxane, oleyl-modified organopolysiloxane, behenyl-modified organopolysiloxane, polyvinylpyrrolidone-modified organopolysiloxane, fluorine-modified Silicones such as organopolysiloxane, perfluoropolyether, perfluorodecane,
Fluorine oils such as perfluorooctane, lanolin, lanolin acetate, lanolin derivatives such as lanolin fatty acid isopropyl, lanolin alcohol, dextrin fatty acid ester, sucrose fatty acid ester, starch fatty acid ester, 12-hydroxystearic acid, calcium stearate Examples thereof include one or two or more of them.

The amount of component (d) in the oil-in-water solid cosmetic of the present invention is not particularly limited, but 1
~ 30% is preferred. When component (d) is used within this range, an oil-in-water solid cosmetic with particularly excellent adhesion to the skin can be obtained while maintaining a fresh feeling of use.

In addition to the above-described components, the oil-in-water solid cosmetic of the present invention can be further provided with a makeup effect, a coloring effect, an ultraviolet shielding effect, and the like by blending powder as component (e). If such a component (e) is a powder used in ordinary cosmetics, it has a spherical shape, a plate shape, a needle shape, a fume shape, a fine particle, a particle size such as a pigment class, a porous shape, a non-porous shape, etc. It is not particularly limited by the particle structure such as quality, etc., and examples thereof include inorganic powders, glitter powders, organic powders, pigment powders, composite powders, metal powders and the like. Specifically, titanium oxide, conger, ultramarine, bengara,
Yellow iron oxide, black iron oxide, zinc oxide, aluminum oxide, silicon dioxide, magnesium oxide, zirconium oxide, antimony oxide, magnesium carbonate, calcium carbonate, chromium oxide, chromium hydroxide, carbon black, titanium / titanium oxide sintered product, Silica, aluminum silicate, magnesium silicate, aluminum magnesium silicate, calcium silicate, barium silicate, mica, synthetic mica, synthetic sericite, sericite, muscovite, phlogopite, red mica, biotite, talc , Kaolin, silicon carbide, barium sulfate, bentonite, smectite, hydroxyapatite, boron nitride and other inorganic powders, nylon powder, polymethyl methacrylate powder, acrylonitrile-methacrylic acid copolymer powder, vinylidene chloride-methacrylic acid copolymer Pa Loaders, polyethylene powders, polystyrene powders, organopolysiloxane elastomer powder, polymethylsilsesquioxane powder,
Organic powders such as polytetrafluoroethylene powder, wool powder, silk powder, urethane powder, crystalline cellulose, magnesium stearate, zinc stearate, N-acyl lysine, starch, silk powder, red 201, red 202, red Organic tar pigments such as No. 205, Red No. 226, Red No. 228, Orange No. 203, Orange No. 204, Blue No. 404, Yellow No. 401, Red No. 3, Red No. 104, Red No. 106, Orange No. 205, Yellow 4
No.5, Yellow No.5, Green No.3, Blue No.1, etc. Organic pigments such as zirconium, barium or aluminum lake organic pigment powders such as organic pigment powder, titanium oxide-containing silicon dioxide, zinc oxide-containing silicon dioxide, etc. Metal powders such as powder, aluminum powder, gold powder, silver powder, titanium mica, iron oxide coated mica, iron oxide coated mica titanium, organic pigment coated mica titanium, synthetic phlogopite, titanium oxide coated synthetic phlogopite, titanium oxide coated Bismuth oxychloride, synthetic phlogopite coated with iron oxide / titanium oxide, polyethylene terephthalate / aluminum / epoxy laminated powder, polyethylene terephthalate / polyolefin laminated film powder, bismuth oxychloride, glittering powder such as fish phosphorus foil, etc. One or more of these can be used. These powders are
For example, treatment with silicone compounds such as dimethylpolysiloxane, methylhydrogenpolysiloxane, trimethylsiloxysilicic acid, treatment with fluorine compounds such as perfluoropolyether phosphoric acid, perfluoroalkyl phosphoric acid, fluorine-modified silicone, zinc laurate, etc. A surface treated by a generally known method such as metal soap treatment, amino acid treatment such as N-long chain acylamino acid, oil treatment of higher fatty acid, higher alcohol, ester, wax, etc. may be used.

Although the compounding quantity of the component (e) in the oil-in-water type solid cosmetic of this invention is not specifically limited, 1
~ 40% is preferred. When component (e) is used within this range, an oil-in-water solid cosmetic with particularly excellent adhesion to the skin can be obtained while maintaining a fresh feeling of use.

The oil-in-water solid cosmetic of the present invention includes a surfactant, a water-soluble polymer other than components (a) and (b), and a pH adjuster as long as the effects of the present invention are not impaired. , Aqueous components, ultraviolet absorbers, oil-soluble film forming agents such as trimethylsiloxysilicic acid, solvents such as ethanol, paraoxybenzoic acid derivatives, preservatives such as phenoxyethanol, vitamins, beauty ingredients, moisturizers, fragrances, bactericides, One kind or two or more kinds of antioxidants can be blended.

The surfactant that can be blended in the oil-in-water solid cosmetic of the present invention is used for the purpose of an emulsifier, a dispersant, a wetting agent and the like. As such a surfactant, any surfactant that is generally used in cosmetics may be used, and nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants may be used. Agents and the like. Nonionic surfactants include, for example, glycerin fatty acid esters and alkylene glycol adducts thereof,
Polyglycerin fatty acid ester and its alkylene glycol adduct, Propylene glycol fatty acid ester and its alkylene glycol adduct, Sorbitan fatty acid ester and its alkylene glycol adduct, Fatty acid ester of sorbitol and its alkylene glycol adduct, Polyalkylene glycol fatty acid ester, Sucrose Examples include fatty acid esters, polyoxyalkylene alkyl ethers, glycerin alkyl ethers, polyoxyethylene alkyl phenyl ethers, polyoxyethylene hydrogenated castor oil, alkylene glycol adducts of lanolin, polyoxyalkylene alkyl co-modified silicones, and polyether-modified silicones. These can be used alone or in combination of two or more.
Examples of the anionic surfactant include alkylbenzene sulfate, alkyl sulfonate, α-olefin sulfonate, dialkyl sulfosuccinate, α-sulfonated fatty acid salt, acylmethyl taurate, N-methyl-N-alkyl taurine. Salt, polyoxyethylene alkyl ether sulfate, polyoxyethylene alkyl phenyl ether sulfate, alkyl phosphate, polyoxyethylene alkyl ether phosphate, polyoxyethylene alkyl phenyl ether phosphate, N-acyl amino acid salt, N-acyl- N-alkyl amino acid salts,
ο-alkyl substituted malate, alkylsulfosuccinate and the like can be mentioned, and these can be used singly or in combination. Examples of the cationic surfactant include alkylamine salts, polyamines and alkanolamine fatty acid derivatives, alkyl quaternary ammonium salts, cyclic quaternary ammonium salts, and the like, and these can be used alone or in combination of two or more. . Examples of amphoteric surfactants include amino acid type and betaine type carboxylic acid types, sulfate ester types, sulfonic acid types, and phosphate ester types, and those that are safe for the human body can be used. For example, N, N-dimethyl-N-alkyl-N-carboxylmethyl ammonium betaine, N, N-dialkylaminoalkylene carboxylic acid, N, N, N-trialkyl-N-sulfoalkylene ammonium betaine, N, N
-Dialkyl-N, N-bis (polyoxyethylenesulfuric acid) ammonium betaine, 2-alkyl-1-hydroxyethyl-1-carboxymethylimidazolinium betaine, lecithin and the like, and these may be used alone or in combination of two or more. Can be used. The blending in the case of blending these surfactants with the oil-in-water solid cosmetic of the present invention is preferably 0.01 to 10%.

The water-soluble polymers other than the components (a) and (b) that can be blended in the oil-in-water solid cosmetic of the present invention are used for the purpose of adjusting the gel strength, improving the feel, and the like. Specifically, cellulose derivatives such as methylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, carboxymethylcellulose, natural polymers such as sodium alginate, carrageenan, quince seed gum, xanthan gum, locust bean gum, pectin, gellan gum, Synthetic polymers such as polyvinyl alcohol, carboxyl vinyl polymer, alkyl-modified carboxyl vinyl polymer, polyacrylic acid soda, polymethacrylic acid soda, polyacrylic acid glycerin ester, polyvinylpyrrolidone, etc. are mentioned, one or two of these The above can be used.

Although the preparation method of the oil-in-water type solid cosmetic of the present invention is not particularly limited, for example, component (a)
In addition, the component (d) is emulsified / dispersed in an aqueous system in which the component (c) is swollen, dissolved or dispersed in the component (c), and the component (e) or other components are added and mixed as necessary. To do. Next, a method in which this is heated again above the melting temperature of the component (a), melted, filled in a container such as a resin dish, and cooled and solidified is exemplified.

The oil-in-water solid cosmetics of the present invention are various cosmetics, for example, makeup cosmetics such as foundations, base creams, eye shadows, face colors, blushers, lipsticks, eyeliners, skin cares such as sunscreens, milky lotions, and cosmetic liquids. It can be used as a cosmetic. Among these, particularly when used as a makeup cosmetic, it is preferable because the effects of the present invention are remarkably exhibited.

Hereinafter, the present invention will be described in more detail with reference to examples. Note that these do not limit the present invention.
Examples 1 to 7 and Comparative Examples 1 to 4: Foundations Foundations having the compositions shown in Tables 1 and 2 were prepared by the production methods shown below, and "fresh feeling in use", "adhesion to skin", and "makeup persistence". Each item of “sex” was evaluated by the following evaluation method and criteria, and the results are shown in Table 1 and Table 2.

(Production method)
A. Ingredients (8)-(16) are heated to 75 ° C. and mixed uniformly.
B. Ingredients (17) to (24) are heated to 80 ° C. and mixed uniformly.
C. Components (1) to (7) are added to “B.”, mixed and dispersed, and maintained at 75 ° C.
D. Add “B.” to “C.” to emulsify, add component (25), and mix uniformly.
E. “D.” was heated again to 80 ° C. to melt, filled into a resin dish, and cooled to room temperature to obtain a foundation.

(Evaluation / judgment method)
The foundations of Examples 1 to 7 and Comparative Examples 1 to 4 were used by 20 panelists specializing in cosmetics evaluation, and for each item of “fresh feeling”, “adhesion to skin”, and “makeup sustainability”, Each panel was given a rating for each foundation according to the following five-level evaluation criteria of 1 to 5 points. Then, the average score of all panels is calculated for each foundation.
Judgment was made according to the criteria of the stage. In addition, about makeup persistence, after foundation application 6
The makeup state after time was confirmed and evaluated.

<Evaluation criteria>
Contents Rating (point)
Very good: 5
Good: 4
Normal: 3
Slightly bad: 2
Defect: 1

<Criteria>
Average score for all panels
4.5 or more: ◎
3.5 or more and less than 4.5: ○
2.0 or more and less than 3.5: △
Less than 2.0: ×

As is apparent from the results of Tables 1 and 2, the foundations of Examples 1 to 7 which are the products of the present invention are all of “fresh use feeling”, “adhesion to skin”, and “makeup sustainability”. It was an oil-in-water type solid cosmetic excellent in items. On the other hand, the foundation of Comparative Example 1 in which the component (b) was not blended was inferior in adhesion to the skin and the makeup persistence was not good. In addition, the foundation of Comparative Example 2 in which component (d) was not blended was neither good in adhesion to skin nor in makeup persistence. And the foundation of the comparative example 4 which mix | blended the oil agent with high adhesiveness in order to improve the adhesiveness of a cosmetic film and skin instead of a component (b) has some effects on the adhesiveness to skin. However, on the other hand, the fresh feeling of use was impaired and the makeup sustainability was not good. In addition, the comparative example 3 which did not mix | blend a component (a) did not become solid.

Example 8: Eye shadow (component) (%)
1. Silicone-treated titanium oxide (Note 6) 2
2. Silicone processing sericite (Note 6) 3
3. Red 226 0.2
4). Bengala 0.3
5). Black iron oxide 0.1
6). Mica titanium 10
7). Haze-like hydrophobized silica (Note 7) 0.5
8). Sorbitan sesquioleate 2
9. Soy phospholipid 2
10. Polyoxyethylene (20) sorbitan monooleate 2
11. Squalane 10
12 Liquid paraffin 10
13. Methyl paraoxybenzoate 0.2
14.1,3-Butylene glycol 8
15. Sodium polyaspartate solution (Note 5) 6
16. Agar (acid-treated product) 3
17. Sodium polyacrylate 0.1
18. Purified water remaining * Note 6: Treated with 3% methylhydrogenpolysiloxane * Note 7: Aerosil R974 (Nippon Aerosil)
(Production method)
A. Ingredients (8) to (12) are heated to 75 ° C. and mixed uniformly.
B. Components (13) to (18) are heated to 80 ° C. and mixed uniformly.
C. Components (1) to (7) are added to “B.”, mixed and dispersed, and maintained at 75 ° C.
D. Add "B." to "C." to emulsify and mix uniformly.
E. “D.” was heated again to 80 ° C. to melt, filled into a resin dish, and cooled to room temperature to obtain an eye shadow.

The eye shadow of Example 8, which is an embodiment of the present invention, was an oil-in-water solid cosmetic excellent in all items of “fresh feeling”, “adhesion to the skin”, and “makeup persistence”. .

Example 9: Face color (component) (%)
1. Talc 4
2. Silicone-treated titanium oxide (Note 6) 1
3. Titanium oxide coated synthetic phlogopite (Note 8) 2
4). Bengala 0.2
5). Yellow iron oxide 0.5
6). Haze-like hydrophobized silica (Note 7) 0.5
7). Mica titanium 3
8). Sorbitan sesquioleate 0.5
9. Polyoxyethylene cetyl ether phosphate 0.5
10. Squalane 2
11. Diglyceryl diisostearate 1
12 Vaseline 0.3
13. Methyl paraoxybenzoate 0.2
14.1,3-Butylene glycol 10
15. Agar 1.2
16. Locust Bean Gum 0.2
17. Sodium polyaspartate solution (Note 5) 5
18. Purified water remaining amount 19. Fragrance 0.3
* Note 8: Prominence SF (Topy Industries, Ltd.)
(Production method)
A. Components (8) to (12) are heated to 70 ° C. and mixed uniformly.
B. Components (13) to (18) are heated to 80 ° C. and mixed uniformly.
C. Components (1) to (7) are added to “B.”, mixed and dispersed, and maintained at 70 ° C.
D. Add “B.” to “C.” to emulsify, add component (19), and mix uniformly.
E. “D.” was heated again to 80 ° C. to melt, filled into a resin dish, and cooled to room temperature to obtain a face color.

The face color of Example 9, which is an embodiment of the present invention, was an oil-in-water solid cosmetic excellent in all items of “fresh feeling”, “adhesion to skin”, and “makeup lasting”. .
that's all

Claims (3)

The following components (a) to (d);
(A) Agar (b) Sodium polyaspartate (c) Water (d) Oil agent is blended, The oil-in-water type solid cosmetic characterized by the above-mentioned. The oil-in-water solid cosmetic according to claim 1, wherein 0.01 to 5% by mass of component (b) is blended. Furthermore, powder is mix | blended as a component (e), The oil-in-water type solid cosmetics of Claim 1 or 2 characterized by the above-mentioned.