JPH1121587A - Silicone emulsion composition, production method and cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an O / W type silicone resin emulsion composition having a large particle size, which is excellent in storage stability by narrowing an emulsion particle size distribution width and making the emulsified particles uniform, and a large particle size. It is an object of the present invention to provide a method and to provide a cosmetic obtained by blending such an emulsion composition. SOLUTION: (A) 100 parts by weight of a polyorganosiloxane, (B) 1 to 50 parts by weight of a sorbitan-based surfactant,
And (C) containing 20 to 85 parts by weight of water, having an emulsified particle diameter of 1 to 500 μm, and a value of (average particle diameter / mode particle diameter (V)) of 0.7 ≦ V ≦ 1.3. An O / W type silicone emulsion composition characterized by the following:

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a silicone emulsion composition and a method for producing the same, and more particularly, to a silicone emulsion composition obtained by using a sorbitan-based surfactant and having uniform emulsion particles and excellent storage stability. The present invention relates to a / W type silicone emulsion composition and a method for producing the same.

[0002] The present invention also relates to a cosmetic obtained by blending the above-mentioned silicone emulsion composition.

[0003]

2. Description of the Related Art Conventionally, silicone resins have been used in hair cosmetics for the purpose of imparting gloss and smoothness. As a means for adding silicone to cosmetics, there is a method of adding a silicone resin in advance of solubilization or emulsification in addition to stirring and dissolving the silicone resin. Recently, demands for emulsions have increased due to its good workability, and a large number of emulsion compositions and methods for producing the same have been proposed (Japanese Patent Application No. 8-107348, Japanese Patent Publication No. 59-515).
65, JP-A-7-173294, JP-A-64-4334
2, JP-B 5-82851, JP-A-6-184315,
JP-A-6-234918).

[0004] However, when the emulsion is used, the silicone resin becomes very fine particles, so that the adhesion to the hair is deteriorated, and there is a disadvantage that the inherent properties of the silicone resin are hardly exhibited.

Japanese Patent Publication No. 59-51565 discloses a method for continuously producing a grease-like aqueous silicone liquid containing a diorganopolysiloxane, but the emulsion particles are too fine, not more than 0.5 μm.

JP-A-64-43342 discloses an emulsion composition containing a linear high molecular silicone, and the emulsion particle size is as fine as 1 μm.

Japanese Patent Publication No. 5-82851 discloses a method for producing an organopolysiloxane emulsion, which also has a fine average particle size of dispersed particles of 0.5 μm or less.

Further, Japanese Patent Application Laid-Open No. 6-234918 discloses an oil-in-water type silicone emulsion composition containing an organopolysiloxane having a high degree of polymerization, and the particle size of the emulsion particles is also from 290 to 380 nm (0 to 380 nm). .29-
(0.38 μm).

For this reason, Japanese Patent Application Laid-Open No. Hei 6-184315 has examined an emulsion of large particles having an emulsified particle diameter of 1 to 100 μm, which is advantageous for exhibiting characteristics. However, since the production process is complicated, the production efficiency is poor and unrealistic. Or 1 ~ 100μ
However, there was a problem that the emulsified particle size distribution width was wide and the storage stability of the composition was inferior, and a good emulsion composition could not be found.

[0010]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an O / W having a large particle diameter which is excellent in storage stability by narrowing an emulsion particle diameter distribution width to make the emulsified particles uniform.
It is an object of the present invention to provide a silicone resin emulsion composition and a method for producing the same.

Another object of the present invention is to provide a cosmetic obtained by blending such an emulsion composition.

[0012]

Means for Solving the Problems As a result of repeated studies to achieve the above object, the present inventors have found that emulsification of polyorganosiloxane with a sorbitan-based surfactant results in an emulsion particle size distribution. Found that an emulsion composition having a single peak, a large particle diameter, and excellent storage stability was obtained, and the present invention was completed.

That is, the O / W type silicone emulsion composition of the present invention comprises (A) 100 parts by weight of a polyorganosiloxane and (B) 1 to 50 sorbitan-based surfactants.
Parts by weight and (C) 20 to 85 parts by weight of water, the emulsified particle diameter is 1 to 500 μm, and the value of average particle diameter / mode particle diameter (V) is 0.7 ≦ V ≦ 1.3. It is characterized by being. Further, in this emulsion composition,
It is characterized by containing (D) 1 to 50 parts by weight of a polyoxyethylene alkyl ether and (E) 1 to 50 parts by weight of a polyethylene glycol fatty acid ester.

Further, the method for producing a silicone emulsion composition of the present invention comprises: (1) a step of mixing (A) a polyorganosiloxane and (B) a sorbitan surfactant;
(2) water (C) is added to the mixture obtained in step (1),
Dispersing and emulsifying each component by applying a high shearing force.

Further, the cosmetic of the present invention is characterized by comprising the above-mentioned silicone emulsion composition.

The polyorganosiloxane of component (A) used in the present invention is a component for imparting gloss and smoothness to hair. The component (A) basically has a linear siloxane skeleton, and may have some branches. It is preferable that the whole molecule has a linear structure. The number of siloxy units is preferably from 800 to 100,000, particularly preferably from 1,000 to 10,000.

Examples of the organic group bonded to the silicon atom in the molecule include an alkyl group such as methyl, ethyl, propyl, butyl, and hexyl; a cycloalkyl group such as cyclohexyl; an alkenyl group such as vinyl and allyl; and phenyl and tolyl. And a group in which a hydrogen atom bonded to a carbon atom of these groups is substituted with a halogen atom, a cyano group, an amino group, etc., for example, a chloromethyl group,
3,3-trifluoropropyl group, cyanomethyl group, 3
-Aminopropyl group and the like. The other group bonded to the silicon atom may partially include an alkoxy group, a hydroxyl group, a hydrogen atom, and the like. Among these, a methyl group is particularly preferred because the resulting composition has good stability, polishing effect, slipperiness, and the like and is inexpensive in terms of cost. That is, polydimethylsiloxane is preferable as the polyorganosiloxane. In addition, as a terminal group of a molecular chain, a triorganosilyl group,
Alternatively, a group in which a hydroxyl group is bonded to a silicon atom instead of a part of the organic group is exemplified. As such a component (A), a polydiorganosiloxane end-blocked by a trimethylsilyl group or a dimethylhydroxysilyl group is preferable, and a polydimethylsiloxane end-blocked by a trimethylsilyl group is particularly preferable.

As the polyorganosiloxane of the component (A), those in a range generally called silicone oil or silicone raw rubber soluble in an organic solvent are used.

The viscosity at 25 ° C. is 10,000 to 100,000 because the ease of emulsification of the emulsion and the properties of the component (A) are easily exhibited when the cosmetic is used.
Those having a value of, 000,000 centistokes (cSt) are preferred, and those having a content of 50,000 to 50,000,000 cSt are preferred.

The sorbitan surfactant of the component (B) used in the present invention is an emulsifier, and functions to uniformly disperse the component (A) in water to improve the storage stability of the obtained emulsion. In addition, the emulsified particle size is 1
To 500 μm, which is an essential component for narrowing the particle size distribution width. The sorbitan surfactant is a nonionic surfactant and has features such as high safety.

Examples of the sorbitan surfactant include sorbitan fatty acid esters and polyoxyethylene sorbitan fatty acid esters.

If these surfactants are sorbitan-based, usually the same or two or more different surfactants may be used in combination.

The amount of component (B) is usually the same as component (A).
It is 1 to 50 parts by weight, preferably 3 to 30 parts by weight, per 100 parts by weight. If the amount is less than 1 part by weight, it is difficult to disperse the component (A) in the obtained emulsion composition satisfactorily. If the amount is more than 50 parts by weight, the stability of the obtained emulsion with time decreases.

At the same time, any of nonionic surfactants, anionic surfactants and cationic surfactants may be used together in the same system.

Nonionic surfactants include glyceryl fatty acid esters such as glyceryl monolaurate, glyceryl monomyristate, glyceryl monostearate, and glyceryl monooleate; polyglycerin fatty acid esters having similar fatty acid residues; Ethylene glycerin fatty acid ester and polyoxyethylene fatty acid ester; polyoxyethylene lauryl ether, polyoxyethylene cetyl ether, polyoxyethylene stearyl ether, polyoxyethylene alkyl ether such as polyoxyethylene oleyl ether; polyoxyethylene octyl phenyl ether ,
Examples thereof include polyoxyethylene alkylphenyl ethers such as polyoxyethylene nonylphenyl ether; oxyethylene / oxypropylene block copolymers; and polyether-modified polydimethylsiloxane.

Examples of the anionic surfactant include alkyl benzenes such as sodium hexylbenzenesulfonate, sodium octylbenzenesulfonate, sodium decylbenzenesulfonate, sodium dodecylbenzenesulfonate, sodium cetylbenzenesulfonate and sodium myristylbenzenesulfonate. Sodium sulfonate; sodium alkylnaphthylsulfonate such as sodium butylnaphthylsulfonate; sodium polyoxyethylene octyl ether sulfate;
Sodium polyoxyethylene monoalkyl ether sulfate such as sodium polyoxyethylene decyl ether sulfate and sodium polyoxyethylene icosyl ether sulfate; polyoxyethylene mono (alkyl) such as sodium polyoxyethylene decyl phenyl ether sulfate Phenyl) ether sulfate sodium salt and the like.

The cationic surfactants include octyltrimethylammonium chloride, dodecyltrimethylammonium chloride, hexadecyltrimethylammonium chloride, tallow trimethylammonium chloride, coconut oil trimethylammonium chloride, octyldimethylbenzylammonium chloride, decyldimethylbenzylammonium chloride, Examples are quaternary ammonium salts such as dioctadecyldimethylammonium chloride.

In the present invention, component (C) is used as a dispersion medium.
Add water. This is for obtaining a uniform emulsion composition by dispersing or dissolving the component (A) and other components.

The amount of water of the component (C) is as follows.
20 to 85 parts by weight, preferably 3 parts by weight, per 100 parts by weight
0 to 75 parts by weight. If the amount of water is less than 20 parts by weight, the amount of the organosiloxane, which is a hydrophobic oil, is too large and the emulsion does not invert from the W / O type to the O / W type,
In some cases, water does not form a continuous layer, and when the amount of water exceeds 85 parts by weight, the concentration of the organosiloxane is too low and the efficiency of emulsification may be reduced.

It is more effective to use a surfactant of (D) polyoxyethylene alkyl ether and (E) a surfactant of polyethylene glycol fatty acid ester in addition to the above.

The surfactants of components (D) and (E)
It acts as a thickener for the composition together with the dispersant. Generally, as a thickener, acrylic acid, high-molecular polyacrylic acid copolymer such as methacrylic acid copolymer, alginic acid, gum arabic, casein, methylcellulose, hydroxyethylcellulose, cation-modified etherified cellulose, hydroxypropyl Dendrites, polyvinyl alcohol, polyvinylpyrrolidone, bentonite and the like are known. However, when these are added to hair cosmetics such as a rinse-in shampoo, they may cause separation or sedimentation over time and reduce the performance of the hair cosmetics. It is very useful because of its excellent stability in the ingredients.

The amount of the components (D) and (E) is usually 1 to 50 parts by weight, preferably 3 to 30 parts by weight of the emulsion composition of the present invention. If the amount is less than 1 part by weight, the thickening effect may be insufficient, and if the amount is more than 50 parts by weight, the stability over time of the obtained emulsion may decrease,
Workability during the production of cosmetics may be impaired.

In the present invention, an organic solvent may be added as necessary to dissolve the component (Α) and facilitate emulsification. The organic solvent is not particularly limited as long as it functions as described above, and n-hexane, n-heptane, cyclohexane, methylcyclohexane, an isoparaffin mixed solvent, gasoline, rubber volatile oil, mineral spirit,
Aliphatic hydrocarbons such as kerosene; aromatic hydrocarbons such as toluene and xylene; ethers such as n-butyl ether and methylphenyl ether; ketones such as methyl isobutyl ketone and diethyl ketone; acetic acid-n
Esters such as -butyl, isononyl isononanoate, isotridecyl isononanoate, isopropyl laurate, isopropyl myristate, dioctanoic acid-2,2-dimethylpropene-1,3-diyl; hexamethyldisiloxane, octamethyltrisiloxane, Examples include chain volatile siloxanes such as decamethyltetrasiloxane and dodecamethylpentasiloxane; and cyclic volatile siloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane. And one or two or more of them may be used in combination. Among these, it is preferable to use an aliphatic hydrocarbon or an ester because the component (Α) can be favorably emulsified, and in particular, at least one selected from such an aliphatic hydrocarbon and an ester. When a composition containing various kinds of organic solvents is incorporated into a hair cosmetic such as a shampoo, a rinse or a hair conditioner, a characteristic of giving a smooth feeling to hair after use is obtained.

The composition of the present invention comprises hair oil, hair dye, skim oil, set lotion, tic, bottled oil, hair cream, hair tonic, hair liquid, hair spray, pomade, shampoo, hair rinse, hair oil. Hair cosmetics such as conditioners and hair lotions, hand creams,
Used in all products used externally on the skin, including skin creams, foundations, eye shadows, facial cleansers, skin cosmetics such as skin cleansing and wiping agents, as well as external medicines, for which the feel is problematic when used. be able to. Examples of the form of the product include solid, gel, liquid, and paste forms. In addition to this, it can be widely applied to cosmetics and other uses, such as rubber,
Release agents for plastics and shell molds, lubricants for pulling out and ironing wires, polishes for rubber, plastic products or furniture, defoamers for latex and pulp waste liquid, and water repellency for fibers It can also be used as appropriate for applications such as a fiber treatment agent for imparting flexibility and the like, or a paint component.

The composition of the present invention may optionally contain a preservative, a thickener, and the like. Examples of the preservative include methyl p-hydroxybenzoate, propyl p-hydroxybenzoate, sodium benzoate, citric acid, and salicylic acid. The thickener is as described above.

Other optional components include hydrocarbons such as liquid paraffin, petrolatum, solid paraffin, squalane, and olefin oligomers; isopropyl palmitate, stearyl stearate, octyldodecyl myristate, triglyceride 2-ethylhexanoate, and the like. Higher alcohols such as lauryl alcohol, cetyl alcohol and stearyl alcohol; higher fatty acids such as paramitic acid and stearic acid; humectants such as ethylene glycol, propylene glycol, 1,3-butylene glycol, glycerin and sorbitol; titanium oxide Inorganic powders such as carbon black, iron oxide, sericite, talc, kaolin, mica; organic powders such as nylon, polytitalene, polyethylene, polyacrylate; etano Water; described below various surfactants and solvents such as Le fungicides; perfumes and the like.

The method for producing the silicone emulsion composition of the present invention comprises the steps of (1) mixing the component (A) and the component (B), and (2) the mixture obtained in the step (1). C) adding water and applying high shear to disperse and emulsify each component. These steps may be performed continuously or each step may be performed independently.

The mixing in the step (1) is usually 10 to 9
At a temperature of 0 ° C, preferably 20-80 ° C, usually 50
Low-speed stirrer such as paddle type, anchor type, gate type, etc. paddle type mixer; propeller type mixer; planetary mixer so as to give a rotation of less than 0 rpm, preferably 10 to 200 rpm, more preferably 10 to 60 rpm. The mixture is usually stirred for 0.5 to 5 hours, preferably 1 to 4 hours, until the blended components are homogeneously dispersed.

The addition and emulsification of water in the step (2) are carried out under a high shearing force at a temperature of usually 5 to 90 ° C., preferably 10 to 70 ° C., usually for 0.5 to 8 hours, preferably 1 hour. It takes about 4 hours. The high shearing force required for emulsification can be provided using a high-speed shearing and dispersing device such as a colloid mill, a homomixer, a homodisper, a flow jet mixer and an ultramixer; or a high-pressure shearing and dispersing device such as a homogenizer. When a high-speed shearing and dispersing device is used, the rotation speed is preferably from 500 to 10,000 rpm, particularly preferably from 1,000 to 5,000 rpm. 5
At less than 00 rpm, an emulsion having good stability cannot be obtained, and at a rotation speed exceeding 10,000 rpm, the emulsion produced is rather destroyed. On the other hand, when a high-pressure shearing and dispersing device is used, it is usually 50 to 1,000 kgf.
/ Cm ² , preferably 100-500 kgf / cm ² , passing the mixture through the gap.

Steps (1) and (2) can be carried out by a series of operations in one apparatus using an apparatus combining a low-speed stirring apparatus and a high shearing force dispersion apparatus. High-shear dispersion may be used in combination with low-speed stirring. Examples of such a device include a homomixer combining an anchor mixer and a homomixer; a dispersing device combining a planetary mixer and a homodisper; and a dispersing device such as a combimix combining an anchor mixer, a homomixer and a homodisper. The use of such a dispersing device is preferable because an emulsion composition having particularly excellent storage stability can be obtained. In addition, before, during or after the above series of operations,
Preferably, after the operation, a high-pressure shear dispersion device may be used in combination.

In general, when emulsification is performed, W / O type
/ W type phase inversion is used. In this method, a transparent gel is obtained by gradually injecting water and inverting the phase to obtain a transparent gel-like substance, and further injecting water to obtain an O / W emulsion. By controlling the particle size, emulsions having different emulsified particle diameters can be obtained.
Generally, when water equal to or more than the phase inversion water is injected at the initial stage, the particle size increases. Also, generally, increasing the production temperature increases the particle diameter, and decreasing the production temperature decreases the particle diameter.

As described above, a silicone resin emulsion composition can be prepared. Further, if necessary, the composition thus obtained can be diluted with water to obtain an O / W emulsion composition having a desired silicone concentration. This dilution step does not require the application of high shear.

The O / W emulsion obtained by the present invention has an average particle size of the oil phase of about 1 to 500 μm. When this emulsion is used in a cosmetic, a good feeling in use can be obtained.
Preferably a 100 μm emulsion is used,
Particularly, 5 to 50 μm is preferable. When the ratio of the average particle size to the mode particle size, the value of average particle size / mode particle size (V) is 0.7 to 0.7
When it is in the range of 1.3, an emulsion composition having high storage stability can be obtained.

[0044]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to examples and comparative examples. In these examples, parts indicate parts by weight,% indicates weight%, and viscosity indicates a value at 25 ° C. The present invention is not limited by these examples.

[Examples 1 to 6 and Comparative Examples 1 and 2] Preparation and Evaluation of Silicone Emulsion Composition As shown in FIG. 1, a stainless steel container has a stator 6 on a central axis and rotates around the stator. Emulsification combining an anchor-type rotary low-speed stirrer a having a stirrer provided with a scraper 4 for scraping off the contents attached to the filter wall, and a high-speed shearing and dispersing device b (homochimiser) provided inside the stator. O / W type silicone resin emulsion compositions were prepared (E-1 to E-8) using an apparatus (trade name: A homomixer, Tokushu Kika Kogyo Co., Ltd.) and the components and composition ratios shown in Table 1.

That is, first, polydimethylsiloxane and an emulsifier shown in Table 1 were charged, the inside of the container was heated to a set temperature of 60 ° C., and the stirring device a was stirred at 40 rpm for 2 minutes.
The system was homogenized over time. Then, 15 parts of water was added as an initial water injection, and the mixture was added to the stirring device a, and b was changed to 1000 rpm.
And stirred at 60 ° C. for 1 to 3 hours to homogenize,
A transparent grease was obtained.

After stopping the stirring device b, while rotating a at 40 rpm, if necessary, sodium polyacrylate, paraben and the rest of purified water are added, and the mixture is heated at 30 to 40 ° C. for 2 hours.
And stirred for 4 to 4 hours to give a uniform O / W emulsion composition having a silicone concentration of 50% to E-1 to E-2, E-4 to E-8.
I got

Further, except that 30 parts of the initially injected water was stirred in the apparatuses a and b to obtain a slightly white grease-like substance, the silicone concentration was 50% in the same manner as in the other samples.
% Of a uniform O / W emulsion composition E-3 was obtained.

The average particle size of the oil phase particles of the obtained emulsion was measured using a particle size measuring device LS-100Q (Coulter, Inc.).
(Product name). Further, the stability of the emulsion was evaluated by a storage stability test by observing the presence or absence of separation of an oil phase and an aqueous phase when stored at 50 ° C. These results are as shown in Table 1.

[0050]

[Table 1] As is clear from Table 1, the average particle diameter of the comparative example was 19 μm.
At first glance, it seems to be appropriate because m and 25 μm, but in fact, the average particle size / mode particle size (V) is 0.61 and 1.58, and the particle size distribution range is wide, indicating that storage stability is poor. Was. In contrast, the emulsion of the present invention has an average particle diameter of 30 μm to 150 μm, which is not too fine, and a value of (average particle diameter / mode particle diameter (V)) of 0.91 to 0.91.
Due to the narrow distribution width of 1.20, it was extremely stable for long-term storage at 50 ° C. Further, the average particle size of Example 3 in which water equal to or greater than the phase inversion water was initially injected was larger than the average particle size in which the initially injected water was not injected above the phase inversion water. The average particle diameter of Example 4 in which the production temperature was 80 ° C. was the same as that of Example 2 in which the production temperature was 60 ° C. and the composition ratio was the same.
Was larger than the average particle size. Thus, by controlling the timing of addition of water and the production temperature, the average particle size of the obtained emulsion composition can be freely controlled.

[Examples 7 and 8, Comparative Examples 3 and 4, Preparation and Evaluation of Rinse-in Shampoo] The silicone emulsion composition E-2 or E- prepared in Example 2 or Example 5 was used.
Using Nos. 5 respectively, the rinse-in shampoos of Examples 7 and 8 were prepared from the components and compositions shown in Table 2. Further, for comparison, compositions E-7 and E-8 were used.
, Rinsing-in shampoos of Comparative Examples 3 and 4 were similarly prepared.

[0052]

[Table 2] That is, of the components in Table 2, the surfactants betaine amide propyl dimethylaminoaminoacetate, polyoxyethylene (3) sodium lauryl ether sulfate and polyoxyethylene distearate, and the cation-modified thickener Etherified cellulose, glycerin and methyl p-hydroxybenzoate were charged into a mixing tank, and 8
Stir and mix at 0 ° C. In Examples 7 and 8, pure water was added, and the mixture was cooled to 30 ° C. with stirring. Then, 5.0 parts of the above-mentioned silicone emulsion compositions E-2 and E-5 were added. Mix
I got a rinse-in shampoo. In Comparative Examples 3 and 4, E-7 and E-8 were similarly added and mixed to obtain a rinse-in shampoo.

The stability of the resulting rinse-in shampoo was evaluated by a storage stability test in the same manner as in Examples 1 to 6. In addition, the characteristics of the rinse-in shampoo as cosmetics, smoothness during use, and combability after use, voluminous feel, feel and gloss as evaluation items,
3 good, 2 healthy 20 Japanese female panelists
Usually, 1 was evaluated as bad, and the average was given.
These results are as shown in Table 2.

As is clear from Table 2, Comparative Examples 3 and 4, which do not use the component (B), have not only poor storage stability but also poor cosmetic properties. In contrast, Examples 7 and 8 of the present invention were found to have excellent storage stability and cosmetic properties.

[0055]

The emulsion composition of the present invention has uniform emulsified particles, excellent storage stability, a particle diameter of 1 to 500 μm, and 0.7 ≦ V by the action of a specific surfactant.
≤ 1.3. When the emulsification is carried out only with another surfactant without using the component (B) of the present invention, the emulsified particle size distribution becomes a plurality of peaks, the emulsified particles are non-uniform, and the storage stability is poor. Moreover, the emulsions of the present invention have
Since it is a / W emulsion, when used as a cosmetic, a good feeling without stickiness can be obtained, and excellent workability can be obtained during the production of the cosmetic.

Due to these characteristics, the silicone emulsion composition of the present invention is useful as a raw material for cosmetics such as hair cosmetics, skin cosmetics, makeup cosmetics, and cleansing agents.

When a silicone component is blended as a cosmetic, excellent workability can be obtained by using the silicone resin emulsion composition of the present invention, and excellent feel and good gloss and smoothness can be obtained for hair cosmetics. Can be applied to the hair.

[Brief description of the drawings]

FIG. 1 is an internal view of a mixer used for producing the silicone emulsion composition of the present invention.

[Explanation of symbols]

 a: Anchor-type rotary low-speed stirring device b: High-speed shearing and dispersing device 1: Motor 2: Turbine shaft 3: Fixed paddle 4: Scraper 5: Rotating paddle 6: Stator

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI C08K 3/18 C08K 3/18 5/06 5/06 C08L 83/04 C08L 83/04 // A61K 9/107 A61K 9/107 B (C08L 83/04 71:02)

Claims (4)

[Claims] 1. An emulsion comprising (A) 100 parts by weight of a polyorganosiloxane, (B) 1 to 50 parts by weight of a sorbitan-based surfactant, and (C) 20 to 85 parts by weight of water, and has an emulsified particle diameter of 1 to 1.
An O / W type silicone emulsion composition, wherein the average particle diameter / mode particle diameter (V) satisfies 0.7 ≦ V ≦ 1.3. 2. The silicone emulsion composition according to claim 1, further comprising (D) 1 to 50 parts by weight of a polyoxyethylene alkyl ether and (E) 1 to 50 parts by weight of a polyethylene glycol fatty acid ester. Stuff. 3. A step of (1) mixing (A) a polyorganosiloxane and (B) a sorbitan surfactant.
(2) water (C) is added to the mixture obtained in step (1),
A process of dispersing and emulsifying each component by applying high shearing force, the method comprising the steps of: 4. A cosmetic comprising the silicone emulsion composition according to claim 1.