JP3529593B2 - Manufacturing method of cosmetics - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to hair cosmetics such as hair shampoos, hair rinses, hair treatments, hair conditioners, hair styling agents, perming agents, hair coloring, body shampoos and creams. The present invention relates to a method for producing skin cosmetics such as emulsions, foundations, facial cleansers and the like using water as a dispersion medium. [0002] Hitherto, it has been desired to impart surface smoothness to cosmetics when they are applied to hair or skin. That is, combability and lightness of hand are imparted to hair, and smooth feeling is imparted to skin. For the purpose of imparting these properties, hair cosmetics have been added with a cationic conditioning agent, but the effect has not been sufficient. In addition to these, a method of blending a non-volatile silicone oil (JP-A-61-210022, JP-A-2-247113, JP-A-4-327520, JP-A-4-364113, JP-B-4-4-2566) ,same
Nos. 4-2567 and 4-38723), a method of blending a hard silicone polymer (see Japanese Patent Publication No. 7-29906), and a method of blending a silicone oil in the form of an emulsion (Japanese Unexamined Patent Publication No. Sho 63). -130512, JP-A-4-36226, 4-224309
Nos. 5-13994, 5-39212 and 5-163122). According to these, a certain effect is recognized, but it is not sufficient, and it is required to further improve its characteristics. [0003] Further, for skin cosmetics and make-up cosmetics, a method of blending silicone powder with them in order to improve the feel after application is being studied. That is, a method of blending a polyorganosilsesquioxane powder (see JP-A Nos. 1-265008 and 1-268615) and a method of blending a powder of a cured organopolysiloxane (Japanese Patent Publication No. 4-1716)
No. 2) and a method of compounding an organopolysiloxane elastomer powder (see Japanese Patent Publication No. 4-66446)
Are disclosed. Also disclosed is a method of blending a spherical silicone rubber powder with an antiperspirant and a sunscreen preventing cosmetic (see JP-A-8-12545 and JP-A-8-12546). However, even when these target cosmetics are water-based using water as a dispersion medium, since the silicone powder is blended as it is, it becomes difficult to uniformly disperse the powder in the cosmetic, and the performance is high. In many cases. In addition, it has been proposed that an aqueous dispersion of silicone rubber spheres be used as a lubricant or mold release agent for plastics, rubber, metal, wood, etc. (see Japanese Patent Publication No. 6-53863). The formulation is not yet known. [0004] The present inventors have made intensive studies to further improve the combability, smoothness, and good tactile sensation, and completed the present invention. That is, the present invention relates to (A) a method of (A) having an average particle diameter of 0.1 to 100 μm and JIS-K-63.
Curable liquid silicone rubber composition such that the content of the spherical silicone rubber powder within a range of 10 to 90 measured by an A-type spring hardness tester is 1 to 70% by weight as measured according to No. 01 With the surfactant (B)
This is a method for producing a cosmetic using water as a dispersion medium, wherein 1 to 20% by weight is emulsified and dispersed in water, and an aqueous dispersion obtained by curing is added and mixed. The present invention will be described in detail below.
In order to produce the aqueous dispersion of the present invention, a method is preferred in which the curable liquid silicone rubber composition is emulsified and dispersed in water using a surfactant so as to have an average particle size of 0.1 to 100 μm and cured. The curing reaction of the curable silicone may be any of an addition reaction, a curing by a condensation reaction, an ultraviolet curing, and a radiation curing, but the addition reaction is particularly preferable. This addition reaction may be performed by a conventionally known method. For example, an organopolysiloxane having at least two alkenyl groups bonded to a silicon atom in one molecule,
An organohydrogenpolysiloxane having at least two hydrogen atoms bonded to a silicon atom in one molecule is emulsified and dispersed in water using the surfactant (B), and then a platinum catalyst is used. And let it react. Examples of the alkenyl group in the organopolysiloxane include a vinyl group and an allyl group, and a vinyl group is particularly preferable. Examples of the organic group other than the alkenyl group include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, a nonyl group, a decyl group, a dodecyl group, a tetradecyl group, a hexadecyl group, and an octadecyl group. Aryl groups such as phenyl and tolyl groups; aralkyl groups such as β-phenylethyl group and β-phenylpropyl group; chloromethyl group, 3,3,3-trifluoropropyl group, 3,3, 4,4,5,5,6,6,6-nonafluorohexyl group, 3,3,
4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-Heptadecafluorodecyl group or any one selected from halogenated alkyl groups and the like or Two or more monovalent organic groups having 1 to 20 carbon atoms are mentioned, and preferably 90% by mole or more is a methyl group. The organic group other than the hydrogen atom bonded to the silicon atom in the organohydrogenpolysiloxane includes the same monovalent organic group having 1 to 20 carbon atoms as mentioned above. Similarly, it is preferable that 90 mol% or more thereof is a methyl group. Both of the above are emulsified and dispersed in water (B)
Examples of the surfactant include nonionic surfactants such as polyoxyethylene alkyl phenyl ether, polyoxyethylene alkyl ether, polyoxyethylene sorbitan fatty acid ester, and glycerin fatty acid ester, and an HLB in the range of 1.5 to 20. , Preferably in the range of 7-19. Examples of the ionic surfactant include alkyl sulfates, alkyl benzene sulfonates, dialkyl sulfosuccinates, alkyl phosphates, polyoxyethylene alkyl ether sulfates,
Anionic surfactants such as polyoxyethylene alkylphenyl ether sulfate, cationic surfactants such as alkyltrimethylammonium chloride, alkylamine hydrochloride, alkylamine acetate, alkylbenzenedimethylammonium chloride, N-acylamidopropyl-N , N-dimethylammonio betaines,
N-acylamidopropyl-N, N'-dimethyl-N '
Zwitterionic surfactants such as -β-hydroxypropylammoniobetaines. Of these, nonionic surfactants are preferred. The spherical silicone rubber powder which is the component (A) of the aqueous dispersion according to the present invention has an average particle size of 0.1 μm.
It needs to be in the range of m to 100 μm. When the average particle size is less than 0.1 μm, a remarkable slip property improving effect cannot be imparted when using a cosmetic, and
When the cosmetic is used, when the cosmetic is used, a rough feeling is obtained and a touch feeling is deteriorated. Therefore, the particle diameter needs to be in a range of 0.1 to 100 μm, and preferably in a range of 1 to 10 μm. The spherical silicone rubber powder according to the present invention preferably has a particle shape (major axis / minor axis) of 1 to 1.2. If it is larger than 1.2, the obtained cosmetic will have insufficient slipperiness. More preferably, it is 1 to 1.1. The hardness of the granular silicone rubber powder in the present invention is preferably such that the sheet hardness measured according to JIS-K-6301 is in the range of 10 to 90 with an A-type spring hardness tester. Preferably it is in the range of 20-80. Those having a hardness of less than 10 cannot impart remarkable slip properties to cosmetics, and those having a hardness of more than 90 give a rough feeling and those having a hardness of more than 90 can be obtained industrially. Have difficulty. (A) in the aqueous dispersion in the present invention is 1
It is necessary to be about 70% by weight, and if it is less than 1% by weight, the amount of the aqueous dispersion to be added to the cosmetic needs to be increased, which is uneconomical. If it exceeds 70% by weight, the viscosity of the aqueous dispersion becomes too high and handling becomes difficult. Preferably it is 10 to 60% by weight. When the amount of the surfactant (B) in the aqueous dispersion of the present invention is less than 0.1% by weight, the aqueous dispersion becomes unstable. 0.1 to 20% by weight is necessary, and preferably 0.5 to 5% by weight, because the slipperiness is reduced. In the present invention, the amount of the aqueous dispersion to be incorporated into the cosmetic is 0.1% based on the nonvolatile component in the cosmetic based on (A).
It is in the range of -30% by weight, preferably 1-10% by weight.
The reason for this is that if the amount is less than 0.1% by weight, the obtained cosmetic will have poor slipperiness, and if it exceeds 30% by weight, the stability of the obtained cosmetic will decrease. The cosmetics to which the present invention is applied include hair cosmetics such as hair shampoos, hair rinses, hair treatments, hair conditioners, hair styling agents, perming agents, hair colors, body shampoos, creams, emulsions, foundations, and facial cleansers. And skin cosmetics such as antiperspirants, and makeup cosmetics such as lipstick, eye shadow, mascara, and eyeliner, which use water as a dispersion medium, but are not limited thereto. The cosmetics to which the present invention is directed further include astringents for suppressing perspiration, bactericides for preventing the growth of microorganisms, and oils for maintaining the shape, which are commonly used depending on the type and dosage form of the cosmetics. Ingredients, volatile oil that gives a refreshing feeling after use,
Fillers, ultraviolet absorbers, fragrances, wetting agents, preservatives, antioxidants, stabilizers and the like can be added. The method of adding and mixing the aqueous dispersion to the cosmetic according to the present invention can be, for example, a batch type or a continuous type, and the apparatus to be used is not particularly limited. For example, a homomixer, a homogenizer, a propeller type stirrer, an inline And a continuous emulsifier. Some examples of the production of individual cosmetics are described in the following examples.However, in the method for producing a cosmetic of the present invention, workability is good because the aqueous dispersion is added to the cosmetic. In addition, the dispersibility of the silicone rubber powder in the cosmetic is good, and excellent characteristics are obtained. EXAMPLES The present invention will be described in more detail with reference to the following Examples, which should not be construed as limiting the invention thereto.
Prior to the description of the examples, a production example of the aqueous dispersion used in the examples will be described. The viscosities below are values measured at 25 ° C. (Production Example 1) 500 g of methylvinylpolysiloxane having a viscosity of 600 cSt represented by the following formula (Formula 1) and 20 g of methylhydrogenpolysiloxane having a viscosity of 30 cSt represented by the following formula (Formula 2) in a volume of 1 liter Was stirred and mixed at 2,000 rpm using a homomixer, 5 g of polyoxyethylene (additional number of 9) octylphenyl ether and 150 g of water were added, and stirring was continued at 6,000 rpm. A phase change from the mold to the O / W form occurred, and thickening was observed. Then, while stirring at 2,000 rpm, 329 g of water was added, whereby a uniform cloudy O / W emulsion was obtained. Then, the emulsion was transferred to a glass flask equipped with a stirrer equipped with anchor-type stirring blades, and 1 g of a toluene solution of a chloroplatinic acid-olefin complex (platinum content: 0.05% by weight) and polyoxyethylene (polyoxyethylene) were stirred at room temperature under stirring. Number of moles added 9) Octyl phenyl ether 1 g
Was added and the mixture was reacted at room temperature for 12 hours to obtain a homogeneous cloudy dispersion [hereinafter referred to as (aqueous dispersion-1)]. The average particle size of the particles in the dispersion was measured using a Coulter counter (manufactured by Coulter Electronics Co., Ltd.), and was 3 μm, and the silicone rubber content was 52% by weight. When several g of (aqueous dispersion-1) was dried at room temperature, an elastic white powder was obtained, and it was confirmed by observation with an optical microscope that the powder was spherical. Embedded image Embedded image Separately, a toluene solution of the above chloroplatinic acid-olefin complex (500 g) is mixed with a mixed solution of 500 g of methylvinylpolysiloxane of the above formula (1) and 20 g of methylhydrogenpolysiloxane of the above formula (2). Platinum content 0.05
(% By weight), and immediately poured into an aluminum dish having an inner diameter of 60 mm and a depth of 10 mm, and left at room temperature for 12 hours to obtain a silicone rubber sheet. The hardness of this rubber sheet was measured by an A-type spring hardness tester in accordance with JIS-K-6301, and was 29. (Production Example 2) 280 g of methylvinylpolysiloxane having a viscosity of 10 cSt represented by the following formula (Chemical Formula 3) and 90 g of methylhydrogenpolysiloxane having a viscosity of 200 cSt represented by the following Formula (Chemical Formula 4) in a volume of 1 liter Was stirred and mixed at 2,000 rpm using a homomixer. Then, 3 g of octylphenyl ether of polyoxyethylene (additional number of moles: 9) and 70 g of water were added, and stirring was continued at 6,000 rpm. A phase change from the mold to the O / W form occurred, and thickening was observed. Next, 295 g of water was added while stirring at 2,000 rpm, whereby a uniform cloudy O / W emulsion was obtained. Then, the emulsion was transferred to a glass flask equipped with a stirrer, and 1 g of a toluene solution of chloroplatinic acid-olefin complex (platinum content: 0.05% by weight) and polyoxyethylene (additional mole number: 9) octylphenyl were stirred at room temperature under stirring. Add a mixture of 1 g of ether,
After reacting for 12 hours, a homogeneous cloudy dispersion [hereinafter referred to as (aqueous dispersion-2)] was obtained. The average particle size of the particles in this dispersion was measured using the Coulter counter, and was 4 μm, and the silicone rubber content was 50% by weight. When several g of (aqueous dispersion-2) was dried at room temperature, it was found to be an elastic white powder, which was observed by an optical microscope to be spherical. Embedded image Embedded image Separately, a mixed solution of 280 g of methylvinylpolysiloxane of the above formula (Chem. 3) and 90 g of methylhydrogenpolysiloxane of the above formula (Chem. 4) is added to a toluene solution of the above chloroplatinic acid-olefin complex (platinum). (Content 0.05% by weight) was added to obtain a silicone rubber sheet in the same manner as in (Production Example 1). When the hardness of this rubber sheet was measured by the same method as in Production Example 1, it was 75. (Production Example 3) 500 g of methylvinylpolysiloxane having a viscosity of 600 cSt represented by the above formula (Formula 1) and 20 g of methylhydrogenpolysiloxane having a viscosity of 30 cSt represented by the above formula (Formula 2) in a volume of 1 liter Was stirred and mixed at 2,000 rpm using a homomixer, and then 0.5 g of polyoxyethylene (additional number of 9) octylphenyl ether and 479 g of water were added, and stirring was continued at 6,000 rpm. A phase change from the O type to the O / W type occurred, and a uniform cloudy O / W type emulsion was obtained. Next, this emulsion was transferred to a glass flask equipped with a stirrer equipped with anchor-type stirring blades, and 1 g of a toluene solution of chloroplatinic acid-olefin complex (platinum content: 0.05% by weight) and polyoxyethylene (polyoxyethylene) were stirred at room temperature under stirring. Addition of 9 moles of a mixture of 1 g of octyl phenyl ether,
When the reaction was carried out at room temperature for 12 hours, a uniform cloudy dispersion [hereinafter referred to as (aqueous dispersion-3)] was obtained. The average particle size of the particles in this dispersion was measured using a Coulter counter (manufactured by Coulter Electronics Co., Ltd.).
μm, and the silicone rubber content was 52% by weight. When several g of (aqueous dispersion-3) was dried at room temperature, an elastic white powder was obtained, and it was confirmed by observation with an optical microscope that the powder was spherical. Examples and comparative examples in which the above (aqueous dispersion-1), (aqueous dispersion-2) and (aqueous dispersion-3) are respectively blended to prepare cosmetics are shown below. In the following description,% indicates% by weight. (Example 1, hair shampoo) The following formulation was uniformly mixed with a propeller type stirring device to obtain a hair shampoo. Polyoxyethylene (number of moles of EO added = 3) Sodium lauryl sulfate (25% aqueous solution) 16% Lauryl sulfate diethanolamide 4% Dimethyl polysiloxane (5,000St) Aqueous emulsion (50%) 3% (Aqueous dispersion-1 1% Propylene glycol 2% Methyl parahydroxybenzoate 0.1% Purified water Remainder After washing the hair with this hair shampoo and confirming the combability after drying with a hair dryer, the slipperiness is extremely good and the feel of the hair is smooth. Was excellent. (Example 2, Hair rinse) 1 Stearyltrimethylammonium chloride 1% 2 Cetanol 2% 3 Dimethylpolysiloxane (5,000 cSt) aqueous emulsion (50%) 4% 4 (Aqueous dispersion-2) 2% 5 Propylene glycol 5% 6 Hydroxyethyl cellulose 1% 7 Methyl parahydroxybenzoate 0.1% 8 Purified water Remaining 6 and 8 were heated and dissolved at 70 ° C, and 1, 2 and 5 were heated and dissolved at 70 ° C in advance. It was added while stirring with a propeller type stirring device. After cooling to 50 ° C., 3, 4 and 7 were added, and the mixture was cooled to room temperature with stirring to obtain a hair rinse. After washing this hair rinse with a commercially available hair shampoo, apply it to the surface of the hair, lightly rinse it,
After checking the combability after drying with a hair dryer,
The slipperiness was extremely good, and the feel of the hair was very smooth. (Example 3, emollient cream) 1 stearic acid 14% 2 petrolatum 2% 3 (aqueous dispersion-1) 5% 4 self-emulsifying glyceryl monostearate 2% 5 polyoxyethylene sorbitan monostearate ( 20EO) 1% 6 Methyl p-hydroxybenzoate 0.1% 7 Propylene glycol 10% 8 Purified water The remaining parts 7 and 8 are heated at 70 ° C, and the mixture is uniformly mixed to form an aqueous phase, and 1, 2, 4, and 5 are converted to 70. The mixture obtained by heating and mixing at a temperature of 0 ° C was added to the aqueous phase while mixing, and further emulsified uniformly with a homomixer. After cooling to 45 ° C., 3 and 6 were added, and the mixture was cooled to room temperature with stirring to obtain an emollient cream. This emollient cream was applied to the face after washing the face with a commercially available soap, and after gently wiping it off, the finger touch was observed. As a result, the moist feeling and the smooth feeling were extremely excellent. (Example 4, emollient lotion) 1 squalane 5% 2 petrolatum 2% 3 beeswax 0.5% 4 (aqueous dispersion-2) 3% 5 sorbitan sesquioleate 0.8% 6 polyoxyethylene oleyl ether (20EO) 1.2% 7 Propylene glycol 5% 8 Ethanol 5% 9 Carboxyvinyl polymer (1% aqueous solution) 20% 10 Potassium hydroxide 0.1% 11 Methyl parahydroxybenzoate 0.1% 12 Purified water The remaining 7, 8 and 12 are heat-mixed and mixed. The mixture at 70 ° C. was heated and mixed with 1, 2, 3, 5 and 6 and the mixture at 70 ° C. was added to the aqueous phase with stirring. 9 more
Was added and mixed, 10 was added, and the mixture was uniformly emulsified with a homomixer, cooled to 45 ° C., added with 4 and 11, and cooled to room temperature with stirring to obtain an emollient lotion. This emollient lotion was applied to the face after washing with a commercial soap, and after gently wiping off, the finger touch was observed. As a result, the moist feeling and the smooth feeling were extremely excellent. Comparative Example 1 A hair shampoo was prepared in the same manner as in Example 1 except that (aqueous dispersion-1) was not blended. After washing with this hair shampoo, combability,
When the tactile sensation of the hair was confirmed, it was inferior to Example 1 in slipperiness and smoothness. Comparative Example 2 A hair rinse was prepared in the same manner as in Example 2 except that (aqueous dispersion-2) was not blended. The hair rinse was applied to the hair in the same manner as in Example 2, and the combability and tactile sensation of the hair were confirmed. The results were inferior to Example 2. Comparative Example 3 An emollient cream was prepared in the same manner as in Example 3 except that (aqueous dispersion-1) was not blended. This emollient cream was used in Example 3
It was applied to the face in the same manner as described above, and the finger touch was observed. As a result, it was inferior to Example 3 in moistness and smoothness. Comparative Example 4 An emollient lotion was prepared in the same manner as in Example 4 except that (aqueous dispersion-2) was not blended. This emollient lotion was applied to the face in the same manner as in Example 4, and the touch was observed. As a result, the emollient lotion was inferior to Example 4 in moistness and smoothness. Comparative Example 5 A hair shampoo was prepared in the same manner as in Example 1 except that (Aqueous Dispersion-1) was changed to (Aqueous Dispersion-3). After washing the hair with this hair shampoo, the combability and the tactile sensation of the hair were confirmed. As compared with Example 1, the shampoo had poor lubricity and was slightly rough. (Comparative Example 6) (Aqueous dispersion-1) was dried by a spray drying method to obtain a spherical silicone rubber powder. (Aqueous Dispersion-1) A hair shampoo was prepared in the same manner as in Example 1 except that 1% of the spherical silicone rubber powder was replaced with 0.5% of the spherical silicone rubber powder. I couldn't let it. After washing the hair with this hair shampoo, the combability and the tactile sensation of the hair were confirmed. Comparative Example 7 (Aqueous Dispersion-1) 1% of spherical polymethylsilsesquioxane powder having an average particle size of 3 μm
A hair shampoo was prepared in the same manner as in Example 1 except that the amount was changed to 0.5%. After washing your hair with this hair shampoo,
When the combability and the tactile sensation of the hair were confirmed, it was inferior to Example 1 in slipperiness and accompanied with a slight roughness. The cosmetic obtained according to the present invention has much better slipperiness (flat smoothness, combability, skin slipperiness, conditioning) after use than those of conventional cosmetics. ing.

────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yoshinori Iguchi 1-chome, Hitomi, Matsuida-cho, Usui-gun, Gunma Prefecture Shin-Etsu Chemical Co., Ltd. Silicone Electronic Materials Research Laboratory (56) References JP-A-1-268615 ( JP, A) JP-A-63-313710 (JP, A) JP-A-5-310533 (JP, A) JP-A-5-310540 (JP, A) JP-A-63-309565 (JP, A) JP-A-5-59284 (JP, A) JP-A-6-279232 (JP, A) JP-A-6-192033 (JP, A) JP-A-9-241511 (JP, A) JP-A-2-243612 (JP) JP-A-8-12546 (JP, A) JP-A-7-258026 (JP, A) JP-A-4-272932 (JP, A) JP-A-5-194182 (JP, A) 3-30620 (JP, B2) JP 4-55611 (JP, B2) (58) key The field (Int.Cl. ^7, DB name) A61K 7/00 - 7/50

Claims (1)

(A) An A-type spring hardness tester having an average particle diameter of 0.1 to 100 μm and a sheet hardness measured according to JIS-K-6301. The curable liquid silicone rubber composition is mixed with 0.1 to 20% by weight of the surfactant (B) so that the content of the spherical silicone rubber powder in the range of 10 to 90 is 1 to 70% by weight. And a water-based dispersion medium comprising emulsifying and dispersing in water, and adding and mixing an aqueous dispersion obtained by curing.