JPH01159036A - Preparation of emulsion composition - Google Patents

Abstract

PURPOSE:To continuously and efficiently prepare an emulsion composition, by supplying a plurality of water-phase compositions, oil-phase compositions, and surfactants individually from 3 liquid supplying nozzles of a defined mixing apparatus, mixing and stirring the compositions. CONSTITUTION:Water-phase and oil-phase compositions contg. surfactants at a specific amt. each are supplied to a down part of a mixing and stirring bath 2 continuously and simultaneously from different raw material supplying nozzles 4 each, and at the time, a stirring fan 3 is rotated at a defined rotation speed by operating a rotary axis 6. The water-phase and oil-phase compositions and surfactants supplied in the down part of the bath 2 are stirred by the stirring fan 3, dispersed rapidly, and while pushed upward by the fan 3, become a uniform emulsion. Because the emulsion surface moves upward, it is drawn as a product.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for producing an emulsified composition, specifically an emulsified composition comprising an aqueous phase component, an oil phase component, and a surfactant component and exhibiting a stable emulsified state. This invention relates to a method for efficiently and continuously producing .

[Conventional technology and its problems]

When producing an emulsified composition by mixing aqueous phase components, oil phase components, and surfactant components, conventional methods for mixing the above components include batch mixing, in which the aqueous phase components are mixed in a predetermined manner. While stirring and mixing in a container, 1. The main method is to sequentially add a liquid mixture of an oil phase component and a surfactant component, and continue stirring until the entire mixture becomes uniform.

However, when using such a method, the state of the system is usually determined unilaterally by the quantity/quality of the components to be mixed. This is because even if the system is affected by stirring or cooling, the amount of processing (production amount) is large, so the inside of the system is unrestricted.
This is thought to be due to the fact that the impact of unit processing is less likely to occur as a whole.

On the other hand, in contrast to the above-mentioned batch method, various studies have been conducted on methods for continuously producing emulsified compositions. When mixing multiple components continuously, if the individual components dissolve into each other, they can be easily mixed using a static mixer, and the mixing conditions do not pose a big problem. .

However, when trying to obtain an emulsion composition consisting of the above-mentioned three components that are difficult to dissolve in each other, especially an emulsion composition with a wide variety of components as in conventional cosmetics, it is difficult to simply Quality cannot be easily controlled just by mixing.

In addition, Japanese Patent Application Laid-open No. 62-204833 describes various cleaning agents,
When manufacturing products made of multi-component liquids such as finishing agents, cosmetics, foods, chemicals, etc., multiple types of liquids with different ingredients are fed into a mixing tank from separate liquid supply ports. A method is disclosed for supplying and distributing them uniformly.

However, the above-mentioned publication does not disclose a method for producing an emulsion composition comprising an aqueous phase component, an oil phase component, and a surfactant component.

Therefore, an object of the present invention is to provide a method for efficiently and continuously producing an emulsified composition comprising an aqueous phase component, an oil phase component, and a surfactant component and exhibiting a stable emulsified state.

[Means for solving problems]

As a result of various studies on the blending method described in JP-A No. 62-204833, the present inventors found that after separately mixing two or more water phase components and two or more oil phase components, By separately supplying the aqueous phase component, oil phase component, and surfactant component from three liquid supply ports using the mixing device used in the above-mentioned compounding method, and mixing and stirring,
It has been found that the above objectives are achieved. Also, at that time,
If the above-mentioned surfactant component is mixed in advance with either the above-mentioned aqueous phase component or the above-mentioned oil phase component, even if the aqueous phase component and the oil phase component are supplied separately from the two liquid supply ports, the above-mentioned It was found that the purpose was achieved.

The present invention has been made based on the above findings, and includes a plurality of stirring blades arranged from the bottom to the top inside the tank, and at least two stirring blades arranged horizontally toward the inside of the tank on the lower side surface. Alternatively, in a mixing device equipped with a stirring mixing tank having three raw material supply nozzles and a product outlet on the upper side of the tank, while operating the stirring blade, the aqueous phase is added to the mixing tank. After mixing the surfactant component with at least one of them, the components and the oil phase component are fed separately and continuously from two raw material supply nozzles, or the water phase component, the oil phase component, and The surfactant components are separately and continuously supplied from three raw material supply nozzles, and they are stirred and mixed with the stirring blades to rapidly disperse and press upward to form an emulsion, and then the emulsion is The present invention provides a method for producing an emulsified composition, characterized in that the emulsified composition is continuously extracted from the product outlet. The production method of the present invention can also be applied to cases where the mixture of the above three components obtained by this production method becomes a transparent homogeneous melt, and the present invention is applicable to the production of such a melt. It also encompasses methods.

Hereinafter, the method for producing the emulsified composition of the present invention having the above characteristics will be described in detail based on its embodiments.

First, a mixing apparatus used in carrying out the present invention will be explained with reference to the drawings.

FIG. 1 is a side view of an example of the above-mentioned mixing device, showing the internal structure of the main parts thereof. The mixing device tt is equipped with an agitation mixing tank 2 in its lower part, and this agitation mixing tank 2 has agitation blades 3 extending above and below the tank, and has a raw material feeder arranged horizontally on the lower side surface. The stirring mixing tank 2 has a nozzle 4 for use, a product outlet 5 at the upper side of the tank, and a drain port 5 at the bottom of the stirring mixing tank 2.

Although two raw material supply nozzles 4 are shown in FIG. 1,
To carry out the present invention, at least two or three raw material supply nozzles 4 are required. However, there is no problem even if there are three or more. Moreover, the installation position is the lower side surface of the stirring mixing tank 2 as shown in the figure. In addition, stirring blades 3,
3. ... are fixed to the rotating shaft 6 driven by a motor (not shown) installed at the top of the mixing device 1 at three locations at appropriate intervals in the vertical direction, among which the stirring blade 3 at the bottom is fixed. The raw material supply nozzle 4 is placed in a horizontal position approximately corresponding to
This is what is coming. In this way, the raw material supply nozzle is placed horizontally and directed toward the rotating shaft 6, and in a position corresponding to the stirring blade 3, and more preferably, the horizontal position of the raw material supply nozzle 4 and the horizontal position of the stirring blade 3 are aligned. The object of the present invention can be achieved more effectively by providing it in a position where In addition, 4', 4' are raw material supply lines that supply raw materials to the raw material supply nozzle 4, and raw material components are supplied to the raw material supply line 4' by appropriate means, and from the raw material supply nozzle 4 into the tank. There is no supply available.

To further explain the mixing device 1, the stirring mixing tank 2
is made of stainless steel, and the stirring blade 3 is formed by combining a plurality of turbine blades/propeller blades as shown in the figure, and is replaceable depending on the physical properties of the emulsified composition to be produced. The maximum number is 10. OOOrpm
The particle size can be controlled by adjusting the rotation speed. In the case of the example shown in FIG. 1, the inner diameter of the stirring mixing tank 2 is Dcm, and the diameter of the stirring blade 3 is do
, if the height of the stirring mixing tank 2 is Lc+++, then d/DL
! :0.69, L/D#1.62, and the volume V of the stirring mixing tank 2 is about 1.21, but generally, D=10 to 50cn+, d=5 ~30CI
, L=20~l 00CIII, V=1.0~10
042 is preferable. Also, increase the stirring rotation speed to 500~
It is preferable to carry out the process at a speed of 5000 rpm.

Further, by using a material supplying nozzle 2 having a structure as shown in the figure, the material can be easily cut out and contamination during product changeover can be minimized.

It goes without saying that the mixing device used to carry out the present invention is not limited to that shown in the drawings.

Next, a preferred embodiment of the method of the present invention using the mixing device 1 described above will be described. Two or more water phase components and two or more oil phase components are supplied to the mixing device 1 before They are mixed separately in advance, and a predetermined proportion of a surfactant component is added to and mixed with the aqueous phase component or oil phase component. In this case, the surfactant component is preferably added to and mixed with the oil phase component, but a portion thereof may be added and mixed with the water phase component.

Therefore, in order to carry out the present invention, the aqueous phase component and the oil phase component prepared as described above are simultaneously and continuously supplied to the lower part of the stirring mixing tank 2 from separate raw material supply nozzles 4. The rotating shaft 6 is then driven to rotate the stirring blades 3 at a predetermined rotational speed. The aqueous phase component, oil phase component, and surfactant component supplied to the lower part of the stirring mixing tank 2 are stirred and mixed by the stirring blade 3 and rapidly dispersed, and are pushed upward by the stirring blade 3 to form a uniform emulsion. Since the liquid level rises over time, the emulsion is continuously extracted from the product extraction port 5 provided on the upper side of the stirring mixing tank 2.

It goes without saying that the amounts of the aqueous phase component and oil phase component supplied from the raw material supply nozzles 4, 4, .

Moreover, when the aqueous phase component, oil phase component, and surfactant component are each supplied separately from three raw material supply nozzles, the object of the present invention can be achieved more effectively than in the above case. In this case, the surfactant component is supplied as an aqueous dispersion at an appropriate concentration.

To further explain the embodiments of the present invention, although it varies depending on the type of the target emulsified composition and the shape of the stirring mixing tank, the present invention can reduce the feed rate of raw material components to 0.0
1 to 10 ρ/sec, preferably 0.1 to 3. Ol
/sec, and the average residence time in the stirring mixing tank is 0.1 to 5.0 minutes, preferably 1.0 to 5.0 minutes.

In addition, there are generally two types of emulsions: O/W emulsigone and W10 emulsion, and this type is determined by factors such as the ratio of water to oil used and the hydrophilic/hydrophobic balance of the surfactant. , when producing any type of product, the present invention requires (a) based on 100 parts by weight of the aqueous phase component,
It is suitable for producing an emulsified composition having a composition ratio of 5.0 to 20.0 parts by weight of the oil phase component (Φ) and 5.0 to 30.0 parts by weight of the surfactant component (C). It is suitable for producing an emulsified composition having an emulsified composition composition containing 1 to 10 parts by weight of two or more components other than water as phase components based on 100 parts by weight of the aqueous phase component.

Next, the aqueous phase component, oil phase component, and surfactant component suitable as constituent components of the emulsified composition produced by the present invention will be explained in detail.

As the aqueous phase component (a) used in the production of the emulsified composition according to the present invention, water or an aqueous liquid in which a pigment, a water-soluble polymer, an antibacterial agent, etc. are dissolved or dispersed in water is used. All pigments that can be used in foods, cosmetics, etc. can be used.

The water-soluble polymers mentioned above are mainly used for the purpose of adjusting the physical properties of emulsions and improving their stability, and typical examples include the following: .

Examples of nonionic polymer compounds include hydroxyethylcellulose, methylcellulose, hydroxypropylcellulose, and hydroxypropylmethylcellulose.

Examples of natural polymer compounds include guar gum, gum tragacanth, gum arabic, chitin, and chitosan.

Examples of polyvinylpyrrolidone-based polymer compounds include polyvinylpyrrolidone, a copolymer of vinylpyrrolidone and vinyl acetate, and a copolymer of vinylpyrrolidone, vinyl acetate, and alkylaminoacrylate. 1 Rubiskol VA, Rubiflex D4101 Yuka Bardeish Co., Ltd.), PVP
K.

There are PVP/VA, E-735 <GAF Corporation), etc.

Examples of acidic vinyl ether-based polymer compounds include lower alkyl half esters of copolymers of methyl vinyl ether and maleic anhydride, and commercially available products include Gantrez ES-225, B5-335 (GA
Company F) etc.

Examples of acidic polyvinyl acetate-based polymer compounds include copolymers of vinyl acetate and crotonic acid, and commercially available products include Resin 2B-1310 (National
5tarch Co., Ltd.), Rubicet CE5055 (Yuka Bardeish Co., Ltd.), etc.

As acidic acrylic polymer compounds, acrylic acid and/or
Or a copolymer of methacrylic acid and an acrylic acid alkyl ester and/or a methacrylic acid alkyl ester,
Examples include copolymers of acrylic acid, acrylic acid alkyl esters, and N-alkylacrylamide, and commercially available products thereof include Plus Size (Gauto Kagaku) and Ultrahold 8 (Ciba Geigy).

As amphoteric acrylic polymer compounds, dialkylamine ethyl methacrylate, dialkylaminoethyl acrylate, diaseptone acrylamide, etc. and acrylic acid,
Examples include compounds obtained by copolymerizing methacrylic acid, acrylic acid alkyl esters, methacrylic acid alkyl esters, etc. and making them amphoteric with halogenated acetic acid, and commercially available products thereof include Yukaformer AM-TS (Mitsubishi Yuka).

In addition, as water-soluble compounds other than those mentioned above, cationic cellulose derivatives, cationic starch, diallyl quaternary ammonium salts or copolymers of diallyl quaternary ammonium salts and acrylamide, polyglycol/polyamine condensates, methacryloxyethyl trimethyl Examples include copolymers of ammonium salts or methacryloxyethyltrimethylammonium salts and polyvinylpyrrolidone. Among them, cationic cellulose represented by the product name "Polymer JR" and diallyl represented by the product name "Marquat 100j" are mentioned. Particularly effective are quaternary ammonium salts and diallyl quaternary ammonium salt/acrylamide copolymers represented by the trade name "Marquat 550."

The (b) oil phase component used in the production of the emulsified composition of the present invention includes hydrocarbons such as liquid paraffin, vaseline, and solid paraffin, dimethylpolysiloxane, methylphenylpolysiloxane, polyether-modified silicone, amino Silicon derivatives such as modified silicon, fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, and oleic acid, esters such as isopropyl myristate, octyldodecyl myristate, esters of peracic acid and higher alcohols, and waxes. Examples include glycols such as polyethylene glycol and polypropylene glycol, and phosphoric acid derivatives such as alkyl ether phosphoric acid and polyoxyalkylene alkyl ether phosphoric acid.

Among the surfactant components (C) used in the production of the emulsified composition of the present invention, preferred anionic surfactants include the following.

(2) A straight or branched chain alkyl hanzene sulfonate having an alkyl group having an average carbon number of 10 to 16.

■Polyoxyalkylene alkyl sulfuric acid with an average of 8 to 20 carbon atoms, a straight chain or branched alkyl group, and an average of 0.5 to 8 moles of ethylene oxide and/or propylene oxide added to each molecule. ester salt.

(2) Alkyl sulfate ester salt having an alkyl group having an average carbon number of 10 to 20.

(2) Olefin sulfonate having an average of 10 to 20 carbon atoms in one molecule.

(2) Alkanesulfonate having an average of 10 to 20 carbon atoms in one molecule.

(2) An alkyl ethoxycarboxylic acid salt having an alkyl group having an average carbon number of 10 to 20 and an average of 0.5 to 8 moles of ethylene oxide added to each molecule.

(In the formula, R'' represents an alkyl group or alkenyl group having 6 to 20 carbon atoms, and XI and Yl each represent an ion.) Counter ions of these anionic surfactants include sodium, Alkali metal ions such as potassium: Alkaline earth metal ions such as calcium and magnesium: ammonium ions, 1 to 3 alkanol groups with 2 or 3 carbon atoms
Specific examples include alkanolamines (eg, monoethanolamine, jetanolamine, triethanolamine, triisopropanolamine, etc.).

Among these exemplified anionic surfactants, particularly preferred are straight or branched alkyl sulfate salts having an average carbon number of 10 to 16, or polyoxyethylene alkyl esters having an average carbon number of 8 to 20 alkyl groups. Sulfate ester salt (average number of added moles 0.5 to 8), or average number of carbon atoms 1
0 to 16 olefin sulfonates are mentioned.

Examples of preferred amphoteric surfactants include the following.

■Alkylamine oxide represented by the formula below.

(In the formula, R15 is an alkyl group or alkenyl group having IO to 20 carbon atoms, and RI6 and R17 are alkyl groups having 1 to 3 carbon atoms, and may be the same or different.)
Preferably, RIS has 12 to 16 carbon atoms, and R'' and R'7 are methyl groups.

(2) A phosphoric acid ester represented by the following general formula (1) or (II).

Rs(OCHiCHt), -0/(in the formula,
R, R, and R1 each represent a saturated or unsaturated hydrocarbon group having 8 to 18 carbon atoms, and X and Y each represent hydrogen, an alkali metal, ammonium, or an alkanolamine having a hydroxyalkyl group having 2 or 3 carbon atoms. 17, and y and y each represent a number from 0 to 10).

The above-mentioned phosphoric acid ester surfactant is preferably one in which the number of moles of ethylene oxide added is 0 to 3, particularly without ethylene oxide added, and with a carbon number of 12 to 3.
Those having 14 alkyl groups are preferred. Preferred examples thereof include sodium mono- or dilauryl phosphate, potassium mono- or dilauryl phosphate, jetanolamine mono- or dilauryl phosphate, triethanolamine mono- or dilauryl phosphate, sodium mono- or dilauryl phosphate, potassium mono- or dilauryl phosphate. , mono- or simiristyl phosphate jetanolamine, mono- or simiristyl phosphate triethanolamine, and the like. This phosphate ester surfactant contains compounds represented by the above formula (+) and formula (n),
The weight ratio is 1020 to 5:5, especially 10:0 to 7:3
Preferably, they are used as a mixture in proportions of .

■Quaternary ammonium salt represented by the formula below.

(In the formula, Rit represents an alkyl group or alkenyl group having 10 to 20 carbon atoms, Rzo and R2 represent an alkyl group having 1 to 4 carbon atoms, 1. is an integer of 1 to 3, and X is C000 or - so
, represents an O group) Among these, Rit has 12 to 16 carbon atoms, Rzo and Ri
t is a methyl group 1. is preferably 3.

■Imidacillin type compound represented by the following formula [wherein R
tz is a fatty acid root with an average carbon number of 10 to 2o, R22 is hydrogen, Na or CHi COOMe (Me: H, Na,
organic base), R24 is COOMe, CH same as above),
Ris represents a hydroxyl group, an acid salt, an anionic surface-active sulfate, or a sulfate] Among these, those in which RZZ has 12 to 16 carbon atoms are preferred.

Examples of preferred cationic surfactants include the following.

A quaternary ammonium salt represented by the following formula.

(In the formula, 1 to 2 of R", R", R2a, and Rit represent a linear or branched long-chain alkyl group with 8 to 20 carbon atoms or a long-chain hydroxyalkyl group, and the remainder is a long-chain hydroxyalkyl group with 1 carbon number.
~3 alkyl or hydroxyalkyl group or benzyl group, and X represents a halogen atom or an alkyl sulfate group having 1 to 2 carbon atoms) Among these, distearyl dimesylammonium chloride, stearyl trimethyl ammonium methosulfate, stearyl trimester Preferred are delammonium chloride, stearyldimethylbenzylammonium chloride, lauryldiethylhensylammonium chloride, lauryltrimethylammonium bromide, distearylmethylhydroxymethyl chloride, cetyltrimethylammonium chloride, and the like.

Examples of preferred nonionic surfactants include the following.

(2) Polyoxyethylene alkyl or alkenyl ether containing a primary or secondary alkyl group or alkenyl group having an average carbon number of 8 to 20 and to which 3 to 12 moles of ethylene oxide is added.

(2) Polyoxyethylene alkylphenyl ether having an alkyl group having an average carbon number of 8 to 12 and to which 3 to 12 moles of ethylene oxide is added.

■Higher fatty acid alkanolamide or its alkylene oxide adduct represented by the following formula.

/ R"CON \ (In the formula, R20 represents H or CH, and R31 is an alkyl group or alkenyl group having 10 to 20 carbon atoms. , is an integer of 1 to 3, and 1 is an integer of O to 3. [Example] Example 1 An emulsified composition consisting of the following components was manufactured by the following manufacturing method using the following mixing device.

[Mixing device (structure as shown in Figure 1)] - Height of stirring mixing tank: 28 cm - Capacity of stirring mixing tank: 3.3 ffi - Inner diameter of stirring mixing tank: 13.4. cm・Stirring blade type and installation position (
Height) Bottom: Pitched turbine, installed at a height of 1.5 cm from the bottom of the side of the stirring mixing tank Second from the bottom: Diversion type, installed at a height of 6 cm above the bottom stirring blade 1 Top: Installation position W (height) of the (center of) propeller and each liquid supply port: 4 cm above the bottom of the side of the stirring mixing tank [Ingredients used] (a) Water-soluble components (water phase components) Purified water Balance Amount *Methylparaben 0.1 (parts by weight) Citric acid
0.05 hydroxyethyl cellulose O,
l 5 Dye Trace amount (b) Oil-soluble component (oil phase component) Liquid paraffin 1.0 (parts by weight) Silicone 2.0 (Methylpolysiloxane) Propylene glycol 5.0 (C) Surfactant component Stearyltrimethylammonium chloride
2.0 (weight st distearyltrimethylammonium chloride F 1.0 polyoxyethylene (5) oleyl ether 2,0
*The total amount of the above three components (a), Φ) and (C) is 100
Amount expressed as parts by weight.

[Manufacturing method]

The above three components (a), (b) and (C) are heated and dissolved separately at 60°C, and a stirring blade installed in a stirring mixing tank is operated to separate the heated and dissolved three components. The raw material was supplied from the raw material supply nozzle to the lower part of the stirring mixing tank and dispersed. In addition, the rotation speed of the stirring blade is as shown in the table below.
200 Or, p, +*, closed.

The table below shows the relationship between the stirring rotation speed of the stirring blade during production and the particle size and stability of the obtained emulsified compositions 1 to 4. The table below also shows the particle size and stability of emulsion compositions (products of the present invention) obtained by mixing the above three components using a batch mixing method as comparative products 2 to 4. Comparative product 1 was obtained in the same manner as inventive products 1 to 4 except that the stirring blade was not operated.

The emulsified composition obtained in this example is usually rinsed/
This system is used as a treatment type.

Table 1 From the results shown in Table 1 above, the products 1 to 4 of the present invention show good emulsification state, but the comparative products 1 to 4 have poor emulsion stability.
It can be seen that even the emulsion with good stability (comparative product 3) has a significantly larger emulsion particle size than the products 1 to 4 of the present invention.

Example 2 Emulsified compositions (inventive products 5 to 8 and comparative products 5 to 8) were produced in the same manner as in Example 1, except that the ingredients used were changed as shown below.

[Ingredients used]

(a) Water-soluble components (water phase components) Purified water Balance amount stable Na fragrant O,5 (parts by weight) Citric acid 0.2 Ethanol 2.0 Pigment qs (b) Oil-soluble components (oil phase components) Lauric acid 0.5 (parts by weight) Polyoxy I (5) Polyoxybutylene (7) Dimethylbolysil O+V
3.0 dibutylhyphenyloxytoluene
0.2 Ethylene glycol diste 7 rate 1.0 (C) Surfactant component Polyoxyethylene lauryl ether Sodium sulfate
2 0. O (ffilt part) lauric acid di-I-tanol 7mide 5. The emulsification states of the obtained invention products 5 to 8 and comparative products 5 to 8 are shown in the table above.
Similar to 1, it is shown in Table 2 below.

Table 2 From the results shown in Table 2 above, products 5 to 8 of the present invention show good emulsification state, but comparative products 5 to 8 have poor emulsion stability.
It can be seen that even the product with good stability (comparative product 7) has a significantly larger emulsion particle size than products 5 to 8 of the present invention.

Example 3 Using the apparatus used in Example 1, the following component (a) and the following C
An emulsion composition ( A product of the present invention) was obtained.

In addition, the following (a) component, the following function) -■, -■, -○ component and the following (C) -■, -■ component were each supplied separately from six nozzles, but in the same manner as above, continuous An emulsified composition (comparative product) was obtained by a manufacturing method (method described in JP-A-62-204833).

(a) Water-soluble components (aqueous phase components) Purified water Balance amount *Hydroethylcellulose 0.5 (fiffi part) Citric acid
0.1 Methylparaben 0.1 (b) Oil-soluble component (oil phase component) Monoglyceride 1.0 (parts by weight) Cetanol 3.0 Propylene glycol 5.0 (C) Surfactant component Distearyldimethylammonium chloride
1.0 (parts by weight) Cetyltrimethylammonium chloride 3,0*Amount that makes the total amount of the three components (a), (b), and (C) 1 oou parts.

The emulsion particle size and stability of the inventive product and comparative product obtained as described above are shown in Table 3 below.

Table 3 From the results shown in Table 3 above, it can be seen that the product of the present invention has a smaller emulsion particle size and superior stability than the comparative product.

〔Effect of the invention〕

The method of the present invention differs from a conventional line continuous mixing device in that a vertical mixing device is used, and the stirring mixing tank is equipped with a plurality of stirring blades, preferably a plurality of stirring blades with different stirring capacities. The emulsification dispersion is carried out by controlling and dispersing the supplied raw materials into an area where they are dispersed at high speed and an area where the dispersion state is maintained. , an oil phase component and a surfactant component, or a surfactant component is a water phase component and/or a surfactant component.
The two components added to the oil phase component are introduced into the stirring mixing tank near the stirring blades through two or three raw material supply nozzles, and high-speed stirring is performed, and the homogenized emulsion is transferred to the stirring mixing tank. An emulsified composition is produced by extracting from above, and according to the present invention, an emulsified composition that is composed of an aqueous phase component, an oil phase component, and a surfactant component and exhibits a stable emulsified state is effectively extracted.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an example of a mixing device used in carrying out the present invention. 1... Mixing device 2... Stirring mixing tank 3... Stirring blade 4... Raw material supply nozzle 5... Product extraction port Patent applicant Kao Co., Ltd. Figure 1 Procedural amendments Commissioner of the Patent Office Kunio Ogawa 1, Indication of the case, Patent Application No. 1983-316924, 2, Name of the invention, Process for producing an emulsified composition 3, Relationship with the person making the amendment, patent applicant (091) Kao Corporation 4, Agent No. 601 Pacific Nogizaka, 6-29 Akasaka 9-chome, Minato-ku, Tokyo Voluntary amendment (amendment within 1 year and 3 months from filing of the application) 6. Detailed description of the invention in the specification to be amended. 7. Contents of correction

Claims (1)

[Claims] (1) It has a plurality of stirring blades arranged from the bottom to the top inside the tank, and has at least two or three raw material supply nozzles arranged horizontally toward the inside of the tank on the bottom side. In a mixing device equipped with a stirring mixing tank having a product outlet on the upper side of the tank, at least one of the aqueous phase component and the oil phase component is added to the stirring mixing tank while operating the stirring blade. After mixing the surfactant component with either, 2
Continuously feed raw materials separately from different feed nozzles, or
Alternatively, the aqueous phase component, oil phase component, and surfactant component are separately and continuously supplied from three raw material supply nozzles, and are stirred and mixed with the stirring blades to rapidly disperse and push upward. A method for producing an emulsified composition, comprising: forming an emulsion into an emulsion, and then continuously extracting the emulsion from the product outlet.