JPH10120524A - Transparent or translucent emulsion cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily obtain a transparent or translucent emulsion cosmetic having excellent feeling by compounding a silicone oil having a specific viscosity in combination with a silicone-based surfactant. SOLUTION: This cosmetic contains (A) a silicone oil having a kinetic viscosity of <=10cSt at 25 deg.C and (B) a silicone-based surfactant. The component B is preferably a polyether-modified organopolysiloxane. The weight ratio of A:B is preferably 1:(0.01-2). The component A is e.g. methylpolysiloxane or fluorine-modified polysiloxane and its kinetic viscosity is preferably <=6cSt. The emulsion cosmetic can be stabilized by adding (C) a hydrophilic surfactant (especially preferably a polyoxyethylene-added nonionic surfactant). The weight ratio of B:C is 1:(10-0.5).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transparent or translucent emulsified cosmetic containing silicone oil stably without special mechanical treatment.

[0002]

2. Description of the Related Art
In the field of cosmetics, silicone oil has been used as an oil component of cosmetics because it is light and non-sticky, has an excellent feeling of use, and has high safety. However, the silicone oil is stably compounded in the system without special mechanical treatment using a high-pressure homogenizer, an emulsifier that gives a strong shearing force such as an ultrasonic emulsifier, etc.
It has been difficult to obtain a transparent or translucent emulsified cosmetic.

[0003] Accordingly, the present invention provides a transparent or translucent emulsified cosmetic which can be produced without performing any special mechanical treatment, stably contains silicone oil, and gives a silky feel peculiar to silicone oil. The purpose is to:

[0004]

Under such circumstances, the present inventors have conducted intensive studies, and as a result, by blending a silicone oil having a specific viscosity and a silicone-based surfactant in combination, it is easily transparent. It has been found that an emulsified cosmetic composition having an excellent translucent feel can be obtained, and further stabilization can be achieved by adding a hydrophilic surfactant, thereby completing the present invention.

That is, the present invention comprises the following components (A) and (B): (A) a silicone oil having a kinematic viscosity at 25 ° C. of 10 cSt or less, (B) a surfactant having a silicone chain, and a transparent appearance. And an emulsified cosmetic characterized by being translucent.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, "transparent or translucent" means a transparency of 20 using a spectrophotometer (UV-160) manufactured by Shimadzu Corporation and a transparency of distilled water of 100 as a control. It refers to those in the region of ~ 100.

The silicone oil having a kinematic viscosity at 25 ° C. of 10 cSt or less at 25 ° C. includes methylpolysiloxane, methylphenylpolysiloxane, methylcyclopolysiloxane, alkyl-modified polysiloxane, and fluorine-modified polysiloxane. Particularly, those having a kinematic viscosity of 6 cSt or less are preferable. If the viscosity of the silicone oil exceeds 10 cSt, the stability will be significantly reduced.

These components (A) can be used alone or in combination of two or more. The amount of the component (A) to be incorporated into the emulsified cosmetic of the present invention is not particularly limited, and can be appropriately selected according to the dosage form. However, 0.1 to 40% by weight, especially 0.1 to 20% by weight is preferred.

The silicone surfactant of the component (B) includes polyether-modified organopolysiloxane, amino-modified organopolysiloxane, alkylglyceryl ether-modified organopolysiloxane, and the like. Methylpolysiloxane KF-351A, KF-353A, KF-354A, KF-355A, KF-6
18A, KF-945A, KF-6011, KF-6013, KF-6015, KF-6016,
KF-6017 (all manufactured by Shin-Etsu Chemical Co., Ltd.), SH-3773C, SH-3772
C, SH-3775C (all manufactured by Toray Silicone Co., Ltd.), polyoxyethylene / polyoxypropylene-modified methylpolysiloxane, KF-352A, KF-615A, KF-6008, KF-6012
(Above, manufactured by Shin-Etsu Chemical Co., Ltd.), and TSF-4703 and TSF-4704 (above, manufactured by Toshiba Silicone Co., Ltd.), which are amino-modified organopolysiloxanes. Of these, polyether-modified organopolysiloxanes are preferred.

These components (B) can be used alone or in combination of two or more. The amount of the component (B) to be added to the emulsified cosmetic of the present invention is 20% by weight or less from the viewpoint of safety. Particularly, the content is preferably 10% by weight or less. From the viewpoint of stability, the weight ratio of component (A) to component (B) is (A) :( B) = 1: 0.01 to 1:
2, particularly preferably 1: 0.02 to 1: 1.

The emulsion cosmetic of the present invention can further stabilize the system by further blending a hydrophilic surfactant as the component (C). Such hydrophilic surfactants include, as nonionic surfactants, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, lauric acid polyoxyethylene hydrogenated castor oil, isostearate polyoxyethylene hydrogenated castor oil, polyoxyethylene Polyoxyethylene castor oil or hydrogenated castor oil derivatives such as ethylene hydrogenated castor oil pyroglutamic acid isostearate diester; polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monopalmitate;
Polyoxyethylene sorbitan fatty acid esters such as polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan monoisostearate, and polyoxyethylene sorbitan tetraoleate; polyoxyethylene glyceryl monostearate, polyoxyethylene glyceryl monoisostearate, Fatty acid esters of polyoxyethylene glycol such as polyoxyethylene glyceryl triisostearate; polyoxyethylene lauryl ether, polyoxyethylene hexyl decyl ether, polyoxyethylene cetyl ether, polyoxyethylene stearyl ether, polyoxyethylene octyl dodecyl ether; Polyoxyethylene behenyl ether, polyoxyethylene nonyl phenyl ether, polyoxyethylene In addition to polyoxyethylene alkyl ethers such as lenpolyoxypropylene decyl tetradecyl ether; polyoxyethylene fatty acid esters such as polyoxyethylene monooleate; polyoxyethylene addition-type surfactants; polyglycerin alkyl ether; polyglycerin Fatty acid esters, sucrose fatty acid esters and the like, as anionic surfactants,
Polyoxyethylene alkyl sulfate surfactants such as polyoxyethylene lauryl ether triethanolamine sulfate; N-acyl amino acid salt surfactants such as sodium lauroyl sarcosine and sodium lauroyl methylalanine; sodium polyoxyethylene lauryl ether phosphate Sodium polyoxyethylene cetyl ether phosphate, dipolyoxyethylene alkyl ether phosphoric acid, tripolyoxyethylene alkyl ether phosphoric acid, dipolyoxyethylene nonyl phenyl ether phosphoric acid, sodium polyoxyethylene lauryl ether phosphate, dipolyoxyethylene Polyoxyethylene alkyl ether phosphate-based surfactants such as sodium lauryl ether phosphate; and the like. , Alkylamidobetaine, alkylamidobetaine and the like, and as a cationic surfactant, a di-long-chain alkyl quaternary ammonium salt, a mono-long-chain alkyl quaternary ammonium salt, a di-long-chain alkyl polyoxyethylene quaternary ammonium salt, Bis (hydroxyalkyl) quaternary ammonium salts, quaternary ammonium salts having an amide / ester bond and the like can be mentioned. Of these, polyoxyethylene addition type nonionic surfactants are preferable, and those having an ethylene oxide addition mole number of 10 to 60 are particularly preferable.

These components (C) can be used alone or in combination of two or more. The amount of the surfactants of the components (B) and (C) added to the emulsified cosmetic of the present invention as a total amount is 20% by weight or less, particularly 10% by weight, from the viewpoint of safety.
The following is preferred. The weight ratio of component (B) to component (C) is preferably (B) :( C) = 1: 10 to 1: 0.5, particularly 1: 5 to 1: 2, from the viewpoint of stability.

The emulsified cosmetic of the present invention comprises the above component (A),
In addition to (B) and (C) and water, components generally compounded in emulsified cosmetics can be appropriately compounded as long as the effects of the present invention are not impaired. Examples of such components include extenders such as mica, talc, sericite, kaolin, nylon powder, polymethylsilsesquioxane, and barium sulfate; inorganic pigments such as titanium oxide, zinc oxide, and iron oxide;
Powders obtained by subjecting these powders to surface hydrophobic treatment such as silicone treatment, metal soap treatment, N-acylglutamic acid treatment; solid or liquid paraffin, solid paraffin, microcrystalline wax, vaseline, ceresin, ozokerite, montan wax, etc. Hydrocarbons; olive, ground wax,
Vegetable oils such as carnauba wax, lanolin, whale wax, animal fats or waxes; stearic acid, palmitic acid, oleic acid, glycerin monostearate, glycerin distearate, glycerin monooleate, isopropyl myristate, Fatty acids such as isopropylstearate and butylstearate or esters thereof; alcohols such as ethyl alcohol, isopropyl alcohol, cetyl alcohol, stearyl alcohol, palmityl alcohol, hexyl decyl alcohol; and moisturizing agents such as glycol and sorbitol Polyhydric alcohols; medicinal ingredients such as whitening agents, analgesic anti-inflammatory agents, antipruritics, disinfectants, astringents, emollients, hormonal agents, etc .; methylcellulose, ethylcellulose, Carboxymethylcellulose, polyacrylic acid, tragacanth, agar, thickeners such as gelatin and the like; emulsion stabilizers, chelating agents, UV protecting agents, pH adjusting agents, preservatives, dyes, etc. perfumes.

The emulsified cosmetic of the present invention can be produced according to a conventional method, and the form is not particularly limited as long as it is an emulsified cosmetic, but an oil-in-water emulsified cosmetic is preferable. , Serum, cream, milky lotion, makeup remover and the like.

[0015]

EXAMPLES The present invention will be described in more detail with reference to the following Examples, but it should not be construed that the invention is limited thereto.

Examples 1 to 29 and Comparative Examples 1 to 5 Various emulsified cosmetics having the formulations shown in Tables 1 to 3 were produced, and their transparency and usability were evaluated. The results are shown in Tables 1 to 3.

<Production method> Components a to n of Tables 1 to 3 are mixed,
The mixture was heated and dissolved as needed, and a mixture of components ow was added dropwise with stirring with a propeller or the like to obtain a cosmetic. At this time, no emulsifier (for example, a high-pressure homogenizer, an ultrasonic emulsifier, etc.) for giving a strong shearing force was used.

<Evaluation method>-Transparency: The transmittance was measured using a spectrophotometer (UV-160) manufactured by Shimadzu Corporation, and the transparency of distilled water used as a control was taken as 100 and 75 or more and 100 or less. Transparent range, 20
The range of not less than 75 and less than 75 was determined to be translucent. -Feeling of use: An actual use test was conducted by 10 panelists, and the stickiness of the skin after applying the cosmetic to the skin was evaluated. The case where the number of persons who answered that it was not sticky was 5 or more was “good”, and the case where the number of persons was 4 or less was “poor”.

[0019]

[Table 1]

[0020]

[Table 2]

[0021]

[Table 3]

[0022]

The emulsified cosmetic of the present invention is a transparent or translucent cosmetic which can be produced without any special mechanical treatment and contains silicone oil stably.

Claims (6)

[Claims] (1) The following components (A) and (B): (A) a silicone oil having a kinematic viscosity at 25 ° C. of 10 cSt or less, (B) a silicone-based surfactant, and the appearance is transparent or translucent. An emulsified cosmetic, characterized in that: 2. The emulsified cosmetic according to claim 1, wherein the component (B) is a polyether-modified organopolysiloxane. 3. The weight ratio of component (A) to component (B) is (A) :( B)
The emulsified cosmetic according to claim 1, wherein = 1: 0.01 to 1: 2. 4. The emulsified cosmetic according to claim 1, further comprising (C) a hydrophilic surfactant. 5. The emulsified cosmetic according to claim 4, wherein the component (C) is a polyoxyethylene addition type nonionic surfactant. 6. The weight ratio of component (B) to component (C) is (B) :( C)
The emulsified cosmetic according to claim 4 or 5, wherein = 1: 10 to 1: 0.5.