JPH0930926A - Powdery/polymer powder material mixture and cosmetic compounded with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a powdery polymer/powdery material mixture by mixing a specific powdery polymer with a powdery material, and further to obtain a cosmetic excellent in touch by using the mixture. SOLUTION: A powdery polymer having an average primary particle diameter of 0.1-20μm is ground in a volatile solvent, and the obtained ground solution is mixed with a powdery material or further an oiling agent. The volatile solvent is removed from the mixture to obtain the powdery polymer.powdery material mixture, which is added in an amount of 1-100 pts.wt. per 100 pts.wt. of a cosmetic to obtain the cosmetic. A silicone resin, teflon, a nylon, etc., is preferable used as the polymer, because an ability for controlling the touch of the cosmetic is large. The volatile solvent includes a cyclic silicone, methylene dichloride, and fluorocarbons. The powdery material includes the red color No. 104, and nylon powder. The powdery polymer and the powdery material are used in a weight ratio of 100:1 to 1:100. The oiling agent includes stearyl alcohol and glycerol. The powdery polymer and the powdery material are used in a total amount weight ratio of 0.1:100 to 20:100.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a polymer powder / powder mixture excellent in touch and a cosmetic composition containing the same. More specifically, a soft agglomerate composed of polymer powder and powder,
And a soft agglomerate thereof, the present invention relates to a cosmetic having an excellent feel.

[0002]

2. Description of the Related Art
As disclosed in Japanese Patent Publication No. 6-51614, it is known to blend silicone spherical polymer powder into cosmetics. It is known that when a high-molecular powder such as nylon, polymethylmethacrylate, or silicone is blended with a cosmetic, the feel of the cosmetic is greatly changed as compared with when it is not blended.

For example, when a polymer powder having an average primary particle diameter of more than about 1 μm is blended, slippage becomes strong, and a smooth feel, a smooth feel, and a smooth feel are obtained.
In addition, when a polymer powder having an average primary particle diameter of less than about 1 μm is blended, stopping becomes strong, and a squeaky feeling or a feeling of sensation is obtained.

This is because, in the conventional cosmetics, these polymer powders were blended into the cosmetics as they were, and the above-mentioned feeling was obtained by the secondary and tertiary aggregates of the polymer powders. It was often a touch.

Then, a sample obtained by finely pulverizing the polymer powder was prepared, and its feeling was examined. As a result, it was found that a powder in which the above-mentioned feeling characteristics were further emphasized was obtained.
That is, the polymer powder having an average primary particle size of more than 1 μm with 1 μm as the boundary exhibited particularly strong smoothness and smoothness.

However, in cosmetics such as powder foundations and eye shadows in which it is difficult to mix the pulverized solution of the polymer powder as it is, there is a limit to its mixing,
It was difficult to take advantage of the characteristics of finely pulverized powder.

In view of this problem, the inventors of the present invention have conducted extensive studies to obtain powders and cosmetics having an excellent feeling, and as a result, mixed a pulverized solution of polymer powder with powders conventionally used in cosmetics. By removing the solvent, we succeeded in suppressing the reaggregation of the polymer powder and significantly changing the feel of the conventional powder.

Furthermore, by simultaneously adding an oil agent such as a silicone resin having a substituted or non-substituted alkyl group, the polymer powder and the powder have been successfully maintained in a soft agglomerated state. It was completed.

[0009]

Means for Solving the Problems That is, according to the present invention, the powder is mixed with a pulverized solution obtained by pulverizing a polymer powder having an average primary particle diameter of 0.1 to 20 μm in a volatile solvent, and volatilized. The object of the present application is achieved by a polymer powder / powder mixture obtained by removing a volatile solvent, and a cosmetic compounded therewith.

Hereinafter, the present invention will be described in detail.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The polymer powder used in the present invention is
The average primary particle diameter is 0.1 as observed by an electron microscope.
It is a polymer powder in the range of ˜20 μm, and the particle size distribution may be narrow or wide. Further, the shape includes spherical, irregular shape, lump, plate, needle, etc.,
Spherical or spherical aggregates are preferable because they have a high effect of improving the feel. The particle size of the polymer powder is preferably 20 μm or less because of its adhesion to the skin and 0.1 μm or more because of its industrial availability.

As the polymer, there is no problem as long as it is a resin conventionally used in cosmetics, for example, a silicone resin,
Nylon, polyethylene, polypropylene, polycarbonate, polystyrene, Teflon, acrylic, urethane, polymethylmethacrylate, polyacrylonitrile, starch, cellulose, silk, chitin, chitosan,
Examples thereof include cotton and polyvinyl alcohol, with silicone resin, Teflon, nylon, polyethylene and urethane being preferred. These powders have a high feel adjusting ability.

Regarding the particle size distribution of the polymer powder, there are a polymer powder having a primary particle size in the range of 1 to 20 μm and a polymer powder having a primary particle size in the range of 0.1 to less than 1 μm. The numerical ratio is preferably in the range of 100: 0 to 15:85. Fewer small particles tend to improve the smoothness of the feel.

As the volatile solvent used in the present invention, cyclic silicone, volatile linear silicone, lower liquid isoparaffin, methylene chloride, fluorocarbon, hexane, cyclohexane, ether, toluene, xylene,
Benzene, terpenes, water, 1,3-butanediol,
Examples thereof include ethanol, methanol, propanol, isopropanol, butanol and the like. These solvents are
It is determined based on workability and solubility with an oil agent described later.

As a method for pulverizing the polymer powder used in the present invention, a wet medium type pulverizer having excellent pulverization efficiency is preferable. Examples include, but are not limited to, Micros, Dynomill, Ongmill, paint conditioner, sand mill, ball mill and the like.

The proportion of the polymer powder in the pulverized solution varies depending on the amount and type of powder added later, but the pulverized solution 1
0.1 to 40 parts by weight is preferable with respect to 00 parts by weight.
Within this range, various characteristics of the powder can be sufficiently exhibited.

The powder used in the present invention may be a powder that has been used in cosmetics in the past. Examples of powders are Red No. 104, Red No. 201, Yellow No. 4, Blue 1
No., black No. 401, etc., yellow No. 4 Al lake, yellow No. 203 Ba lake, etc. lake dye, nylon powder, silk powder, urethane powder, Teflon powder, silicone powder, cellulose powder, N-
Polymers such as acylated lysine, yellow iron oxide, red iron oxide, black iron oxide, chromium oxide, carbon black, colored pigments such as ultramarine blue and dark blue, white pigments such as zinc oxide, titanium oxide and cerium oxide, talc, mica , Extenders such as sericite and kaolin, pearl pigments such as mica titanium, barium sulfate,
Metal salts such as calcium carbonate, magnesium carbonate, aluminum silicate, magnesium silicate, etc., inorganic powders such as silica and alumina, fine particles titanium oxide, fine particles zinc oxide, fine particles iron oxide, fine particles titanium oxide treated with alumina, fine particles titanium oxide treated with silica, bentonite , Smectite and the like. There is no particular limitation on the shape of these powders.

These powders are conventionally known surface treatments such as fluorine compound treatment, silicone treatment, pendant treatment, silane coupling agent treatment, titanium coupling agent treatment, oil agent treatment, N-acylated lysine treatment, polyacryl. It may or may not be surface-treated in advance by acid treatment, metal soap treatment, amino acid treatment, inorganic compound treatment, plasma treatment, mechanochemical treatment and the like.

Examples of the fluorine compound treatment include perfluoroalkyl phosphate ester and its salt, perfluoroalkylsilane, Teflon, surface treatment with perfluoroalkylcarboxylic acid, metal soap treatment, surface fluorination treatment with plasma, Examples include mechanochemical composite treatment with Teflon.

The ratio of the polymer powder to the powder used in the present invention is within a range in which the effects of the present invention can be obtained, and the weight ratio is 1
The range of 00: 1 to 1: 100 is preferable, and 100: 50 to 3: 100 is more preferable.

In the present invention, an oil agent can be used at the same time. As the oil agent used in the present invention, an oil agent conventionally used in cosmetics can be used. For example, stearyl alcohol, cetyl alcohol, isostearyl alcohol, lauryl alcohol, hexadecyl alcohol, higher alcohols such as octyldodecanol, glycerin,
Polyhydric alcohols such as polyethylene glycol, 1,3-butanediol, propylene glycol and malbitol, fatty acids such as isostearic acid, stearic acid, undecylenic acid and oleic acid, myristyl myristate,
Hexyl laurate, decyl oleate, isopropyl myristate, isopropyl palmitate, hexyldecyl dimethyloctanoate, glyceryl monostearate, diethyl phthalate, ethylene glycol monostearate, esters such as octyl oxystearate,
Hydrocarbons such as liquid paraffin, petrolatum and squalane,
Lanolin, reduced lanolin, wax such as carnauba wax, mink oil, cacao butter, coconut oil, palm kernel oil, camellia oil, sesame oil, castor oil, oils and fats such as olive oil, ethylene / α-olefin / co-oligomer, liquid isoparaffin, paraffin, Deoxyribonucleic acid, alginic acid, dimethylpolysiloxane, methylhydrogenpolysiloxane, methylphenylpolysiloxane, biphenylpolysiloxane, polyether modified organopolysiloxane, perfluoroalkyl / polyoxyalkylene co-modified organopolysiloxane, alkyl polyether co-modified silicone , Sugar-modified silicone, polyhydric alcohol-modified silicone, alkyl-modified organopolysiloxane, modified organopolysiloxane (provided that the position of the substituent may be at the side chain or at the end), fluorine Modified organopolysiloxane,
Amodimethicone, amino-modified organopolysiloxane, fluorine-modified silicone resin, acrylic silicone,
Silicone compounds such as trimethylsiloxysilicic acid, silicone gel, silicone RTV rubber, organic UV absorbers, perfluoropolyethers, fluorinated pitch, fluorocarbons, fluoroalcohols, perfluoroalkyl phosphate ester salts, and other fluorine compounds. To be

Of these, it is preferable to include a silicone resin having a substituted or unsubstituted alkyl group. Also,
When it is substituted, it is preferably fluorine-substituted. These silicone resins are effective in softening the polymer powder and the powder into soft aggregates.

The total ratio of the oil agent used in the present invention, the polymer powder and the powder is in a range where the effects of the present invention can be particularly obtained. The weight ratio is 0.1: 100 to 20:10.
0 is preferable, and 0.3: 100 to 1 is more preferable.
It is 0: 100.

In the present invention, the order of adding the pulverized solution, the powder and the oil agent does not matter. Further, the oil agent may be dissolved in a different solvent in advance. For example, if the solvent used in the pulverized solution is compatible with the oil agent, it is effective to add each component at the same time, and if the solvent and the oil agent are poorly compatible, the powder and the oil agent are mixed. When mixed with a pulverizing solution after mixing in advance, an aggregate like high molecular powder captured on the powder surface may be obtained.Furthermore, after mixing the pulverizing solution and the powder, if an oil agent is added. Aggregates surface-treated with an oil agent may be obtained.

As a method of removing the volatile solvent, a method of using a combination of reduced pressure, heating and stirring is preferable.
In addition, when the oil agent is not used or when the solvent is not compatible with the solvent, there is also a method in which the solvent is roughly removed by filtration or centrifugation and then completely removed. The freeze-drying method is also effective.

In the present invention, the polymer powder / powder mixture obtained by the above method can be blended in cosmetics. The blending amount of the polymer powder / powder mixture is 1 to 100 parts by weight with respect to 100 parts by weight of the cosmetic, and 10 to 100 parts by weight is preferable as an effective blending amount.

Examples of the cosmetics of the present invention include oily foundations, emulsified foundations, foundations using water, foundations for both uses, white powder, blusher, pressed powder, cheek color, undercover, lipstick, lip coat, eye shadow, eye liner. , Nail color, makeup base, emulsion, lotion, cream, sunscreen, hand lotion, conditioner, shampoo, dry shampoo, conditioner, hair liquid, hair treatment, cuticle coat,
Examples include setting agents, perfumes, deodorant agents, cleansing agents, face soaps, soaps and the like.

In the cosmetic of the present invention, in addition to the above-mentioned components, powders, oils, resins, surfactants, ultraviolet absorbers, fragrances, preservatives, bactericides, moisturizers, which are usually used in cosmetics, A viscous agent, a physiologically active ingredient, a solvent, salts, water and the like can be simultaneously added.

As the surface active agent, for example, an anionic surface active agent, a cationic surface active agent, a nonionic surface active agent, a betaine type surface active agent can be used.

Examples of organic ultraviolet absorbers include 2-ethylhexyl paramethoxycinnamate, 2-ethylhexyl paradimethylaminobenzoate, and 2-hydroxy-4.
-Methoxybenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfuric acid, 2,2'-dihydroxy-4-methoxybenzophenone, p-methoxyhydrocinnamic acid diethanolamine salt, para-aminobenzoic acid (hereinafter abbreviated as PABA), Ethyldihydroxypropyl PABA, glyceryl PABA, homomenthyl salicylate, methyl-O-aminobenzoate, 2-ethylhexyl-2-cyano-3,3-diphenylacrylate, octyldimethyl PABA, octyl methoxycinnamate, octyl salicylate, 2-phenyl-. Benzimidazole-5-sulfuric acid, triethanolamine salicylate, 3- (4-methylbenzylidene) camphor, 2,4
-Dihydroxybenzophenone, 2,2 ', 4,4'-
Tetrahydroxybenzophenone, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone, 2-hydroxy-4-N-octoxybenzophenone, 4-isopropyldibenzoylmethane, butylmethoxydibenzoylmethane, 4- (3,4 -Dimethoxyphenylmethylene) -2,5-dioxo-1-imidazolidine propionate 2-ethylhexyl and the like.

Examples of the sticking agent include polycarboxylic acid, polyacrylic acid, polyvinyl alcohol, agar, gellan gum, gum arabic, tragacanth gum, karaya gum, xanthan gum, tamarind gum, guar gum, alginic acid and carboxyvinyl polymer.

Examples of physiologically active ingredients are anti-inflammatory agents, tyrosinase activity inhibitors, plant extracts, vitamins,
Examples include sulfur and urea.

Examples of salts include sodium chloride, potassium chloride, calcium chloride, calcium lactate, aluminum chloride, various phosphates and the like.

Examples of the solvent include ethanol, methanol, isopropyl alcohol, LPG, ether, hexane, N-methylpyrrolidone, isoprene glycol and the like.

[0035]

The present invention will be described in detail below with reference to examples and comparative examples.

The evaluation methods of the polymer powder / powder mixture and cosmetics used in the examples and comparative examples are shown below.

Sensory characteristic test The feeling (dryness, smoothness) at the time of application to the skin was examined by 10 professional inspectors, and the results were good, moderately good, and slightly poor.
It was comprehensively evaluated on the basis of four grades of failure.

Example 1 Polymer powder / powder mixture As the polymer powder, "Trefil 505C" type manufactured by Toray Dow Corning Silicone Co. was used. The product had a wide particle size distribution, the center of which was a few μm, which corresponded to the particle size range of the present invention. Trefill 50
75 parts by weight of cyclic silicone (decamethylcyclopentasiloxane, hereinafter referred to as D5) was added to 12.5 parts by weight of the 5C type, and after coarsely stirring, it was finely ground with a wet ultrafine pulverizer "Micros" manufactured by Nara Machine Works. It was crushed. Then
To this solution, 12.5 parts by weight of trefil 505C type was added, coarsely stirred, and similarly finely pulverized to obtain a pulverized solution. On the other hand, 90 parts by weight of barium sulfate treated with silicone was dispersed in 140 parts by weight of cyclic silicone (pentamethylcyclotetrasiloxane, hereinafter referred to as D4) using a motor, and 40 parts by weight of the grinding solution was added thereto. Mix with stirring. Then, the powder obtained by drying the cyclic silicone under reduced pressure with heating is pulverized with an atomizer,
A target polymer powder / powder mixture was obtained.

FIG. 1 shows an example of a scanning electron micrograph of the polymer powder / powder mixture of Example 1. From FIG. 1, it is observed that the both are compounded.

Example 2 Polymer powder / powder mixture As the polymer powder, "Trefil 505C" type and "Tospearl 145A" type manufactured by Toshiba Silicone were used. The Tospearl 145A type had an average primary particle diameter of 4.5 μm, which corresponded to the particle diameter range of the present invention.
Trefill 505C type 17 parts by weight, Tospearl 14
80 parts by weight of cyclic silicone (decamethylcyclopentasiloxane, hereinafter referred to as D5) was added to 3 parts by weight of the 5A type, and after coarsely stirring, finely pulverized with "Micros" to obtain a pulverized solution. On the other hand, 90 parts by weight of sericite
40 parts by weight of cyclic silicone (pentamethylcyclotetrasiloxane, hereinafter referred to as D4) was dispersed using a motor, and then 7 parts by weight of trifluoropropyl group-containing silicone resin was dissolved in 7 parts by weight of cyclic silicone (D4). The solution was added and stirred. Here, the grinding solution 50
Parts by weight were added and mixed with stirring. Then, the powder obtained by drying the cyclic silicone under reduced pressure with heating was pulverized with an atomizer to obtain a target polymer powder / powder mixture.

Comparative Example 1 Polymer powder / powder mixture 10 parts by weight of trefil 505C type and 10 parts by weight of barium sulfate plate were stirred with a mixer to obtain a polymer powder / powder mixture.

Comparative Example 2 Polymer powder / powder mixture Trefill 505C type 8.5 parts by weight, Tospearl 1
45A type 1.5 parts by weight, sericite 90 parts by weight 7 parts by weight of trifluoropropyl group-containing silicone resin dissolved in 7 parts by weight of cyclic silicone (D4) and 70 parts by weight of cyclic silicone (D4) were added. Coarsely stir,
Then, the powder obtained by removing the cyclic silicone under heating was pulverized with a mixer to obtain a polymer powder / powder mixture.

Example 3 Foundation A foundation was prepared according to the formulation shown in Table 1. The polymer powder / powder mixture was the polymer powder / powder mixture obtained in Example 1, and the silicone-treated powder was methylhydrogenpolysiloxane 3% heat-treated powder. did.

[0044]

[Table 1]

After the powder components were mixed with a Henschel mixer, the liquid components that had been mixed in advance were added, and the mixture was further stirred and mixed. Next, after pulverization was performed using an atomizer, the product was punched using a mold to obtain a product.

Comparative Example 3 Foundation The same as in Example 3, except that the polymer powder / powder mixture of Comparative Example 1 was used instead of the polymer powder / powder mixture (Example 1). To produce a foundation.

Example 4 Eyeshadow An eyeshadow was prepared according to the formulation shown in Table 2. still,
As the polymer powder / powder mixture, the polymer powder / powder mixture obtained in Example 2 was used.

[0048]

[Table 2]

The respective components were mixed by a mixer, crushed by a hammer mill, and then pressed on a gold plate to obtain a product.

Comparative Example 4 Eye Shadow The same as in Example 4, except that the polymer powder / powder mixture of Comparative Example 2 was used in place of the polymer powder / powder mixture (Example 2). Then, an eye shadow was produced.

Table 3 shows the results of the sensory characteristic test of Examples and Comparative Examples.

[0052]

[Table 3]

From the results shown in Table 3, it can be seen that the examples of the present invention are superior in touch to the comparative examples. In Examples 1 and 2, impressions such as “smooth” and “smooth” were heard, whereas in Comparative Examples 1 and 2, impressions such as “smooth” and “slip” were heard. Further, Examples 3 and 4 are examples of cosmetics in which the polymer powder / powder mixture of Examples 1 and 2 is used, and both of them showed a good feeling. On the other hand, in Comparative Examples 3 and 4, the impression was slightly inferior to Examples 3 and 4 in that the smoothness was insufficient.

[0054]

From the above, it is clear that the present invention provides a polymer powder / powder mixture and a cosmetic having excellent feel.

[Brief description of drawings]

FIG. 1 is a scanning electron micrograph of a polymer powder / powder mixture obtained in Example 1 of the present invention.

Claims (3)

[Claims] 1. A polymer obtained by mixing a powder with a pulverized solution obtained by pulverizing a polymer powder having an average primary particle diameter of 0.1 to 20 μm in a volatile solvent and removing the volatile solvent. Powder / powder mixture. 2. A pulverized solution obtained by pulverizing a polymer powder having an average primary particle diameter of 0.1 to 20 μm in a volatile solvent, powder and an oil agent are mixed, and the volatile solvent is removed. Polymer powder / powder mixture. 3. The polymer powder according to claim 1 or 2.
Cosmetics containing a powder mixture.