JP3242137B2 - Oil-in-water solid cosmetics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel solid cosmetic preparation which is excellent in usability and portability and has a very good feeling in use.

[0002]

2. Description of the Related Art Conventionally, solid cosmetics such as foundations are mostly non-aqueous, such as powder type and oil type, and few contain water. recent years,
Solidified liquid-type foundations are on the market, but these are water-in-oil (W / O) and oil-in-water (O / W) agents. No type is seen.

[0003]

Although these water-in-oil type cosmetics have various advantages, they do not reach the level of oil-in-water type cosmetics in terms of freshness, refreshing feeling, and skin familiarity. Did not. On the other hand, oil-in-water type cosmetics are liquid to cream-like liquid types, and their container forms are mostly bottles or tubes sealed with caps, which is inconvenient in terms of usability and portability. It was something.

[0004] Therefore, there has been a long-felt need for a solid cosmetic that has excellent usability and portability and can be stored compactly while having oil-in-water cosmetic properties.

[0005]

Under such circumstances, the present inventors have conducted intensive studies. As a result, if water and oil were solidified by combining a water-soluble solidifying agent and a water-soluble pressure-sensitive adhesive, water and oil could be solidified. The present inventors have found that a solid cosmetic excellent in usability and portability can be obtained while having oil-type cosmetic properties, and completed the present invention.

That is, the present invention provides the following components (a) to
(D) (a) a water-soluble solidifying agent selected from agar and gelatin (b) methylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, carboxymethylcellulose, sodium alginate, carrageenan, quince seed gum, xanthan gum, pectin, polyvinyl alcohol, Water-soluble adhesive selected from carboxyvinyl polymer, sodium polyacrylate, sodium polymethacrylate, glycerin polyacrylate and polyvinylpyrrolidone (c) Solid, semi-solid and liquid vegetable oils, animal oils, mineral oils and synthetic oils The present invention provides an oil-in-water type solid cosmetic characterized by containing (d) water.

The water-soluble solidifying agent of the component (a) used in the present invention includes, for example, agar, gelatin, and sodium magnesium silicate. These water-soluble solidifying agents have a content of 0.1 to
10.0% by weight (hereinafter simply indicated as%), especially 0.3 to 7.0%
It is preferable to mix in the range of.

[0008] The water-soluble pressure-sensitive adhesive (b) is a water-soluble polymer which is not solidified by itself and is blended in cosmetics, and a gel obtained from only the water-soluble solidifying agent has low physical strength. , Used to reinforce it. Examples of such water-soluble pressure-sensitive adhesives include cellulose derivatives such as methylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, and carboxymethylcellulose; natural polymers such as sodium alginate, carrageenan, quince seed gum, xanthan gum, and pectin; Examples thereof include synthetic polymers such as vinyl polymers, sodium polyacrylate, sodium polymethacrylate, glycerin polyacrylate, and polyvinylpyrrolidone. These water-soluble pressure-sensitive adhesives have a total composition of 0.05%.
It is preferred that the compounding amount be in the range of from 2.0% to 2.0%, especially from 0.1% to 1.0%.

As the oil agent of the component (c), solid, semi-solid, liquid various vegetable oils, animal oils,
Mineral oils and synthetic oils can be used, for example, oils and fats such as olive oil, jojoba oil, mink oil, and mokurou; waxes such as beeswax and candelilla wax; liquid paraffin;
Hydrocarbons such as microcrystalline wax and petrolatum; fatty acids such as stearic acid and oleic acid; higher alcohols such as cetanol; esters such as isopropyl myristate; lanolin fatty acid isopropyl and lanolin derivatives such as lanolin alcohol; starch fatty acid esters; Examples include silicone compounds such as methylpolysiloxane, methylphenylpolysiloxane, and dimethylpolysiloxane polymer having a three-dimensional cross-linking structure. These oils can be used alone or in combination of two or more,
It is preferable to mix 1.0 to 30.0%, particularly 2.0 to 20.0% in the whole composition.

The water of the component (d) accounts for 40.0% of the total composition.
-95.0%, particularly preferably 50.0-80.0%.

The oil-in-water type solid cosmetic of the present invention can further contain a hydrophobized powder as the component (e), and by blending and dispersing the powder in the cosmetic,
A makeup cosmetic such as a foundation can be obtained. Here, in the hydrophobized powder used as the component (e), the powder to be treated is not particularly limited as long as it is a cosmetic powder usually used in cosmetics, and examples thereof include titanium oxide, talc, and mica. , Kaolin, magnesium carbonate, calcium carbonate, aluminum silicate, magnesium silicate, calcium silicate, zinc oxide, red iron oxide, yellow iron oxide, black iron oxide, gunjo, konjo, tar pigment, natural pigment, titanium mica, iron oxide mica Titanium,
Examples include bismuth oxychloride, nylon powder, and silk powder. Further, in the present invention, for the purpose of imparting water repellency, it is necessary that these cosmetic powders have been subjected to a hydrophobic treatment, and as the hydrophobic substance used for such hydrophobic treatment, Examples thereof include fluorine compounds, silicone oils, metal soaps, waxes, fats and oils, and hydrocarbons. Of these, especially fluorine compounds,
Silicone oils are preferred, and as the fluorine compound,
For example, Asahi Guard AG530 (produced by Asahi Glass Co., Ltd.) can be used.

It is preferable that the hydrophobized powder of the component (e) is incorporated in the entire composition in an amount of 1.0 to 40.0%, particularly 5.0 to 30.0%.

In the oil-in-water type solid cosmetic of the present invention, in addition to the above essential components, components used in ordinary cosmetics, for example, humectants, preservatives, antioxidants, ultraviolet absorbers, cosmetic ingredients, fragrances , A surfactant, a lower monohydric alcohol, a lower polyhydric alcohol, and the like can be appropriately compounded within a range that does not impair the effects of the present invention.

The oil-in-water type solid cosmetic of the present invention is obtained by heating and dissolving the components (a) and (b) in the component (d),
The component (c) and the component (e) are optionally stirred and mixed,
It can be manufactured by cooling and solidifying, for example, foundation cream, sun cut cream, foundation,
It can be a solid product such as eyeshadow and hoho red. The thus obtained oil-in-water type solid cosmetic of the present invention has a form in which an oil agent is dispersed in an aqueous phase.

[0015]

Next, the present invention will be further described with reference to examples, but the present invention is not limited to these examples. Examples 1-2, Comparative Examples 1-6 Foundation: A foundation having the composition shown in Table 1 was produced, and together with a commercially available water-in-oil foundation (Comparative Example 6), the following evaluation methods were used for the evaluation items shown in Table 2. And the evaluation criteria were used to perform sensory evaluation. Table 2 shows the results. (Production method) A. (13) to (21) are dissolved by heating. B. Add (1) to (11) to A and mix and disperse. C. Add (12) to B, mix, fill into container and cool. (Evaluation) (1) Retention of form: at 50 ° C., the solid state was maintained in a metal dish container, and the case where the solid state was not maintained was evaluated as x. (2) Other evaluation items: <Evaluation method> A use test was conducted by a specialized panel of 10 people, and the absolute evaluation results of each person were averaged. <Evaluation criteria> Absolute evaluation; Very good: 3 points Good: 2 points Normal: 1 point Bad: 0 points O: 2 points or more △: 1 point or more and less than 2 points x: less than 1 point

[0016]

[Table 1]

* 1: 1000 ml of water was added to 50 g of each pigment to form a slurry. On the other hand, 350 ml of water was added to 9 g of a fluoroalkyl phosphate diethanolamine salt (Asahigard AG530, manufactured by Asahi Glass Co., Ltd.) and stirred to obtain an emulsion. A product obtained by gradually pouring this emulsion into the above slurry, mixing, and then allowing to stand at room temperature. * 2: Laponite XLG (Laponite) * 3: Kunipia G (Kunimine Industries) * 4: Carbopol 940 (Goodrich Chemical)

[0018]

[Table 2]

As is evident from the results in Table 2, the foundations of Examples 1 and 2 had high shape retention, excellent usability and portability, and very good usability.

Example 3 Eye shadow: (Prescription) (1) Siliconized titanium oxide ^{* 5} 2.0 (%) (2) Siliconized titanium mica ^{* 5} 10.0 (3) Siliconized sericite ^{* 5} 3.0 (4) Color pigment 1.0 (5) Sorbitan sesquioleate 2.0 (6) Squalane 1.0 (7) Candelilla wax 1.0 (8) Flavor appropriate amount (9) Preservatives appropriate amount (10) 1,3-butylene glycol 5.0 (11) Agar 0.5 (12) Gelatin 1.5 (13) Poly sodium methacrylate 0.1 (14) Purified water Remaining amount * 5: 2% silicone obtained by adding various pigments and methyl hydrogen polysiloxane to isopropyl alcohol and baking at 120 ° C for 2 hours Treated pigment. (Production method) It is produced in the same manner as in Example 1.

Example 4 Hoho Beni: (Formulation) (1) Silicone-treated titanium oxide ^{* 5} 5.0 (%) (2) Silicone-treated titanium mica ^{* 5} 5.0 (3) Silicone-treated sericite ^{* 5} 5.0 (4) Silicone-treated Talc ^{* 5} 10.0 (5) Color pigment appropriate amount (6) Polyoxyethylene (3) Castor oil 1.0 (7) Soybean phospholipid 1.0 (8) Starch fatty acid ester 0.5 (9) Isocetyl stearate 5.5 (10) Flavor appropriate amount (11 Preservatives Appropriate amount (12) 1,3-butylene glycol 5.0 (13) Sodium magnesium silicate 5.0 (14) Polyvinylpyrrolidone 1.0 (15) Purified water Remaining amount * 5: Various pigments and methyl hydrogen polysiloxane in isopropyl alcohol 2% silicone-treated pigment obtained by baking at 120 ° C. for 2 hours. (Production method) It is produced in the same manner as in Example 1.

Example 5 Base Cream: (Formulation) (1) Polyoxyethylene (3) Castor oil 1.5 (%) (2) Dimethylpolysiloxane 0.5 (3) Perfume proper amount (4) Preservative proper amount (5) Gelatin 2.5 (6) Carboxyvinyl polymer ^{* 4} 0.8 (7) Sodium hydroxide 0.2 (8) Glycerin 3.0 (9) Purified water Remaining amount * 4: Carbopol 940 (Goodrich Chemical Company) (Production method) Heat and dissolve (4) to (9). B. (1) and (2) are added to A and mixed and dispersed. C. Add (3) to B, mix, fill into container and cool.

[0023]

The oil-in-water type solid cosmetic of the present invention is of a novel dosage form, and has excellent usability and portability while having a very good feeling of use, and has high water resistance and water repellency. It is also excellent in function.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A61K ^7/ 00-7/50

Claims (3)

(57) [Claims] 1. The following components (a) to (d): (a) a water-soluble solidifying agent selected from agar and gelatin; (b) methylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, carboxymethylcellulose, sodium alginate, carrageenan Water-soluble adhesive selected from quinsseed gum, xanthan gum, pectin, polyvinyl alcohol, carboxyvinyl polymer, sodium polyacrylate, polysodium methacrylate, glycerin polyacrylate and polyvinylpyrrolidone (c) solid, semi-solid And an oil agent selected from liquid vegetable oils, animal oils, mineral oils and synthetic oils. (D) water-in-oil type solid cosmetics comprising water. 2. The following components (a) to (e): (a) a water-soluble solidifying agent selected from agar and gelatin; (b) methylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, carboxymethylcellulose, sodium alginate, carrageenan Water-soluble adhesive selected from quinsseed gum, xanthan gum, pectin, polyvinyl alcohol, carboxyvinyl polymer, sodium polyacrylate, polysodium methacrylate, glycerin polyacrylate and polyvinylpyrrolidone (c) solid, semi-solid And an oil agent selected from liquid vegetable oils, animal oils, mineral oils and synthetic oils. (D) water (e) hydrophobized powder. 3. The composition according to claim 1, wherein the water-soluble solidifying agent is contained in an amount of from 0.1 to 3.
3. The oil-in-water type solid cosmetic according to claim 1, comprising 10.0% by weight, 0.05 to 2.0% by weight of a water-soluble adhesive, and 1.0 to 30.0% by weight of an oil.