JP5357212B2 - Continuous emulsification apparatus and continuous production method of aqueous emulsion - Google Patents

Description

The present invention relates to a continuous emulsification apparatus and a continuous production method of an aqueous emulsion. Specifically, a liquid material (for example, silicone oil), water and an emulsifier are continuously supplied into the casing, mixed by rotation of a rotating disc with a scraper, and continuously emulsified with the liquid material, and its The present invention relates to a method for continuously producing an aqueous emulsion using an apparatus.

In Japanese Examined Patent Publication No. 59-51565, silicone oil, an emulsifier and water are continuously supplied into a cylindrical container equipped with a shear stirring mechanism, and the inside of the container is maintained at a pressurized state of 0.049 MPa or more. A method of continuously producing an aqueous grease-like silicone liquid having a viscosity of 100,000 centipoise or more by performing shearing stirring so that the shear rate is 501 / second or more is disclosed. However, there is a drawback that heat is easily generated because shearing is applied in a pressurized state. In addition, in order to obtain an aqueous emulsion having a normal concentration, there is a disadvantage that it must be diluted with water in a separate stirring device. Further, since it is in the form of grease, there is a problem that it takes a long time to obtain a uniform aqueous emulsion when a normal stirring device is used. Japanese Patent Application Laid-Open No. 2000-449 discloses a method for producing a grease-like organopolysiloxane aqueous solution by supplying a liquid organopolysiloxane, an emulsifier and water into a casing and rotating a rotating disc with a scraper. However, the usual concentration of aqueous emulsion has the disadvantage that it must be diluted with water in a separate stirrer. Further, since it is in the form of grease, there is a problem that it takes a long time to obtain a uniform aqueous emulsion when a normal stirring device is used. If the amount of water is increased from the beginning and the silicone oil is emulsified in a diluted state, there is a problem that the particle size of the emulsion increases and is unstable.

Japanese Patent Publication No.59-51565 JP 2000-449 A

Accordingly, the present inventors have intensively studied to develop a continuous emulsification apparatus and a continuous production method of an aqueous emulsion without such drawbacks and problems, and as a result, the present invention has been completed. An object of the present invention is to provide a continuous emulsification apparatus capable of rapidly producing an aqueous emulsion having a small particle size and excellent stability and a method for rapidly producing an aqueous emulsion having a small particle size and excellent stability. There is to do.

In the present invention, a rotating disk is installed in the mixing chamber in the casing, scrapers are attached to the upper surface and the lower surface of the rotating disk, and a ring plate extends from the mixing chamber wall between the notches of the lower surface scraper. The mixing chamber extends in a non-contact state, and is divided into an upper mixing chamber, a middle mixing chamber, and a lower mixing chamber by the rotating disk and the ring plate. There is an upper supply port for supplying water and an emulsifier, a lower supply port for supplying water or an aqueous emulsifier solution to the lower mixing chamber on the side wall of the casing, and discharging the aqueous emulsion from the lower mixing chamber to the outside A continuous emulsifier (A) characterized in that a discharge port for opening is opened; a rotating disk is installed in the mixing chamber in the casing, and a scraper is attached to the upper and lower surfaces of the rotating disk An upper ring plate and a lower ring plate extend from the mixing chamber wall in a non-contact state between the notches of the lower surface scraper, and the mixing chamber has the rotating disk, the upper ring plate, and the lower ring plate. It is divided into an upper mixing chamber, a middle upper mixing chamber, a middle lower mixing chamber and a lower mixing chamber by a ring plate, and an upper supply port for supplying liquid material, water and emulsifier to the upper mixing chamber is provided at the upper part of the casing. A lower supply port for supplying water or an aqueous emulsifier solution to the lower mixing chamber and a discharge port for discharging the aqueous emulsion from the lower mixing chamber to the outside. And continuously supplying liquid material, water and emulsifier from the upper supply port to the upper mixing chamber while rotating the rotating disk of the two types of continuous emulsification devices, and the lower supply port Et water or aqueous emulsifier solution was continuously fed to the lower mixing chamber, relates to a continuous process for the production of an aqueous emulsion, characterized by continuously discharging the aqueous emulsion to the outside from the discharge port.

When an aqueous emulsion of a liquid material is continuously produced using the continuous production apparatus and aqueous emulsion production method of the present invention, an aqueous emulsion having a small particle size and excellent storage stability is rapidly produced. can do.

It is a longitudinal cross-sectional view of the continuous emulsification apparatus A of Example 1 of this invention. It is a longitudinal cross-sectional view of the continuous emulsification apparatus B of Example 2 of the present invention.

In the continuous emulsification apparatus (A), the liquid material, water, and emulsifier continuously supplied to the upper mixing chamber move radially outward on the rotating rotating disk to move the ceiling of the upper mixing chamber and the upper mixing chamber. Collide with the inner wall. The material adhering to the ceiling of the upper mixing chamber is scraped off by the upper surface scraper and is subjected to a shearing action. The scraped material falls on the rotating disk and again moves radially outward on the rotating disk. When there is a side scraper, the material adhering to the inner wall of the upper mixing chamber is scraped by the side scraper and is subjected to a shearing action. Thus, a coarse grease-like product is obtained after the first kneading action. The coarse grease-like material moves to the middle mixing chamber through the gap between the peripheral end of the rotating disk and the inner wall of the mixing chamber, and is subjected to a shearing action between the ring plate and the notch of the lower surface scraper. Thus, a uniform grease-like product is obtained by the second kneading action. The uniform grease-like material moves to the lower mixing chamber through the gap between the peripheral edge of the ring plate and the rotating shaft, and the grease-like material attached to the lower surface of the ring plate and the inclined surface of the lower portion of the casing Scraped by a scraper and subjected to a shearing action. Thus, the third kneading action is received. Meanwhile, the homogenized grease-like material is diluted by being mixed with water or an aqueous emulsifier solution continuously supplied from the lower supply pipe opened in the side wall of the casing to the lower mixing chamber. The mixture is subjected to a kneading action three times in total, diluted with the supplied water or aqueous emulsifier solution to form an aqueous emulsion, and continuously discharged to the outside from the discharge port opened in the lower part of the casing. Since the ring plate is present, it is difficult for water or an aqueous emulsifier solution continuously supplied from the lower supply pipe to the lower mixing chamber to go above the ring plate, that is, to the middle mixing chamber. Therefore, it is difficult for the grease-like material to have a low viscosity or to increase the particle size of the emulsion.

In the continuous emulsification apparatus (B), the liquid material, water and emulsifier continuously supplied to the upper mixing chamber move radially outward on the rotating rotating disk and collide with the ceiling and side walls of the upper mixing chamber. . The material adhering to the ceiling of the upper mixing chamber is scraped off by the upper surface scraper and is subjected to a shearing action. The scraped material falls on the rotating disk and again moves radially outward on the rotating disk. When there is a side scraper, the material adhering to the inner wall of the upper mixing chamber is scraped by the side scraper and is subjected to a shearing action. Thus, a coarse grease-like product is obtained after the first kneading action. The coarse grease-like material moves to the middle and upper mixing chamber through the gap between the peripheral end of the rotating disk and the inner wall of the casing, and is subjected to a shearing action between the upper ring plate and the notch of the lower surface scraper. Thus, a uniform grease-like product is obtained by the second kneading action. The homogenized grease-like material moves to the middle and lower mixing chamber through the gap between the peripheral end of the upper ring plate and the rotating shaft, and is subjected to a shearing action between the lower ring plate and the notch of the lower surface scraper. Thus, a more uniform grease-like product is obtained by the third kneading action. The more uniform grease-like material moves to the lower mixing chamber through the gap between the peripheral edge of the lower ring plate and the rotating shaft, and the grease-like material attached to the lower surface of the lower ring plate and the inclined surface of the lower part of the casing It is scraped by the lower surface scraper and receives a shearing action. Thus, the fourth kneading action is received. Meanwhile, the more uniform grease-like material is diluted by continuously mixing with water or an emulsifier aqueous solution supplied to the lower mixing chamber from the lower supply pipe opened in the side wall of the casing. A total of four kneading operations are performed, and the emulsion is diluted with the supplied water or aqueous emulsifier solution to form an aqueous emulsion, which is continuously discharged to the outside from the discharge port opened in the lower portion of the casing. Since there is an upper ring plate and a lower ring plate, the water or the aqueous emulsifier solution continuously supplied from the lower supply pipe to the lower mixing chamber is difficult to go above these ring plates, that is, the middle and lower mixing chamber. Do not go to the mixing chamber. Therefore, it is unlikely that the grease-like product will be reduced in viscosity or the particle size of the emulsion will be increased.

The liquid material to be supplied may be insoluble in water or poorly water-soluble. Examples of such liquid materials include fats and oils, petroleum derivatives, synthetic oils, liquid compounds, and liquid polymers. Examples of fats and oils include edible oils such as soybean oil, rapeseed oil, sesame oil, olive oil, lard, fish oil, and whale oil. Examples of petroleum derivatives include mineral oil, petroleum jelly, liquid paraffin, asphalt, and tar. Examples of synthetic oils include liquid polyolefins and higher fatty acid esters. Examples of the liquid compound include cleaning solvents, plasticizers, stabilizers, curing agents, and catalysts. Examples of the liquid polymer include silicone oil, liquid polybutadiene, liquid polybutene, liquid polyisobutylene, liquid polyurethane, and liquid epoxy resin. Typical examples of the silicone oil are diorganopolysiloxane and organohydrogenpolysiloxane which are liquid at normal temperature. The viscosity is usually several mPa · s or more, preferably 10 to 50000 mPa · s. There are a cyclic type and a linear type. Examples of cyclic compounds include octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and tetramethyltetravinylcyclotetrasiloxane. Examples of the linear chain include dimethylpolysiloxane, methyloctylpolysiloxane, methylvinylpolysiloxane, dimethylsiloxane / methylvinylsiloxane copolymer, dimethylsiloxane / methylphenylsiloxane copolymer, dimethylsiloxane blocked with trimethylsiloxy groups at both ends. Siloxane / diphenylsiloxane copolymer, dimethylsiloxane / methylphenylsiloxane / methylvinylsiloxane copolymer, methyl (3,3,3-trifluoropropyl) polysiloxane, dimethylsiloxane / methyl (3-glycidyloxypropyl) siloxane Copolymer or dimethylsiloxane methyl (3-mercaptopropyl) siloxane copolymer; dimethylpolysiloxane blocked with dimethylvinylsiloxy groups at both ends, dimethylsiloxane methylvinylsilane Xanthene copolymer, dimethylsiloxane / methylphenylsiloxane copolymer or dimethylsiloxane / diphenylsiloxane / methylvinylsiloxane copolymer; dimethylpolysiloxane, methylvinylpolysiloxane, dimethylsiloxane / methylvinyl blocked with hydroxyl groups at both ends of the molecular chain copolymer, dimethylsiloxane-methylphenylsiloxane copolymer or methyl (3,3,3-trifluoropropyl) polysiloxane; silanol-terminated dimethylpolysiloxane dimethylsiloxane-methylvinylsiloxane copolymer young properly Is exemplified by a dimethylsiloxane / methylphenylsiloxane copolymer. ; The organohydrogenpolysiloxane, both terminals blocked with trimethylsiloxy groups of methylhydrogenpolysiloxane young properly dimethylsiloxane-methylhydrogensiloxane copolymers; both ends endcapped with dimethyl hydrogen siloxy group dimethylpolysiloxane, methylhydrogenpolysiloxane polysiloxane young properly dimethylsiloxane-methylhydrogensiloxane copolymers. Another example of silicone oil is branched methylpolysiloxane that is liquid at room temperature. Instead of silicone oil, an organopolysiloxane resin that is liquid at room temperature may be used. The silicone oil may be a mixture of two or more.

Any emulsifier may be used as long as it has been conventionally used for emulsification of a liquid material, and an appropriate emulsifier may be selected according to the type of the liquid material. Anionic surfactants such as higher fatty acid salts, higher alcohol sulfates, long chain alkyl sulfonates, polyoxyethylene alkylphenyl ether sodium sulfate, sodium alkylbenzene sulfonate; long chain alkyl quaternary ammonium salts , Cationic surfactants such as higher amine salts and benzylammonium salts; polyoxyethylene alkylphenyl ether, polyoxyethylene alkyl ether, polyoxyethylene higher fatty acid ester, sorbitan fatty acid ester, glycerin higher fatty acid ester, polyoxyethylene propylene Nonionic surfactants such as modified dimethylpolysiloxane; double-sided surfactants are exemplified. In addition to emulsifiers, water-soluble polymers such as polyvinyl alcohol, methylcellulose, carboxymethylcellulose, and hydroxymethylcellulose, antibacterial agents, antiseptics, antifungal agents, antioxidants, rust inhibitors, dyes, and fillers as protective colloids and thickeners You may mix | blend an agent, a curing catalyst, etc.

When supplying the liquid material, water and the emulsifier from the upper supply port to the upper mixing chamber, the ratio of 0.1 to 30 parts by weight of the emulsifier and 0.5 to 20 parts by weight of the water is supplied with respect to 100 parts by weight of the liquid material. Good. Of course, this blending ratio range may be exceeded depending on the difficulty of emulsification of the liquid material. The emulsifier may be supplied in the form of an aqueous solution. When supplying water or an aqueous emulsifier solution from the lower supply port to the lower mixing chamber, 10 to 200 parts by weight of water, or 10 to 200 parts by weight of water and 0.1 to 20 parts by weight of the emulsifier with respect to 100 parts by weight of the liquid material. Supply in proportions. In order to supply water or an emulsifier aqueous solution, it is good to supply through a supply pipe using a metering pump from a storage tank. The aqueous emulsion produced by the production method of the present invention comprises a water repellent, a release agent, a lubricant, a fiber treatment agent, a leather treatment agent, an artificial leather treatment agent, a cosmetic additive, a polishing agent, an antifoaming agent, and a coating. Useful as a material.

The present invention will be specifically described with reference to the embodiments shown in the drawings. The production of the aqueous emulsion was carried out at 25 ° C. The average particle size of the aqueous emulsion was measured by a laser particle size distribution meter (manufactured by HORIBA).

[Embodiment 1] In the continuous emulsification apparatus A of FIG. 1, a rotating disk 3 is horizontally installed in a mixing chamber 2 in a casing 1. The center of the rotating disk 3 is fixed to the upper end of the rotating shaft 4. A pulley 5 is attached to the root of the rotating shaft 4, and the rotation of a motor (not shown) is transmitted to rotate. The peripheral speed of the rotating disk 3 is preferably in the range of 3 to 100 m / sec. The rotating shaft 4 is supported by a bearing portion 6. A scraper 7 a is attached to the upper surface of the rotating disk 3, a scraper 7 b is attached to the side surface, and a scraper 7 c is attached to the lower surface. A side scraper is not essential. Each scraper is attached in a single number, preferably two or more. In the case of two or more, it is preferable that both are attached at an equal angle. The scraper 7c attached to the lower surface of the rotating disk 3 has a plate shape or a lattice shape extending in the radial direction and the vertical direction of the rotating disk 3, but is notched 7d extending horizontally inward from the outer end in the radial direction. Exists. The scraper 7c is movable relative to the ring plate 8 described below. In FIG. 1, only one scraper is displayed, and the other two are not shown. The ring plate 8 extends in a non-contact state from the lower end of the inner wall of the cylindrical portion 1a of the casing 1 so as to intersect the notch 7d of the lower surface scraper 7c, and the circumferential end portion of the ring plate 8 and the rotating shaft 4 There is a gap for the mixture to pass through. The rotating disk 3 rotates under this insertion state.

The mixing chamber 2 in the casing 1 is divided into an upper mixing chamber 2a, a middle mixing chamber 2b, and a lower mixing chamber 2e by a rotating disk 3 and a ring plate 8. An upper supply port 9 for supplying a material to the upper mixing chamber 2a is opened at the center of the upper lid 1b of the casing 1, and lower ends of the upper supply pipes 9a and 9b are located. A liquid material is supplied to the upper mixing chamber 2a from the upper supply pipe 9a, and an aqueous solution of an emulsifier is supplied from the upper supply pipe 9b. The upper supply pipes 9a and 9b are both connected to the storage tank via a rotary pump (not shown). The liquid material and the aqueous emulsifier solution are continuously supplied at a constant ratio. The upper supply pipe may be a single double pipe. An inverted conical portion 1c is connected to the lower end of the side wall of the cylindrical portion 1a of the casing 1, and a lower supply pipe 9c for supplying water or an aqueous emulsifier solution penetrates the lower mixing chamber 2e. Since the bearing portion 6 projects from below in the center of the conical portion 1c, it is annular and has a recess having a V-shaped cross section. A discharge port 11 for discharging the aqueous emulsion from the lower mixing chamber 2e to the outside is opened in the inverted conical portion 1c which is the bottom of the casing 1.

[Embodiment 2] In the continuous emulsification apparatus B of FIG. 2, a rotating disk 3 is horizontally installed in the mixing chamber 2 in the casing 1. The center of the rotating disk 3 is fixed to the upper end of the rotating shaft 4. A pulley 5 is attached to the root of the rotating shaft 4, and the rotation of a motor (not shown) is transmitted to rotate. The peripheral speed of the rotating disk 3 is preferably in the range of 3 to 100 m / sec. The rotating shaft 4 is supported by a bearing portion 6. A scraper 7 a is attached to the upper surface of the rotating disk 3, a scraper 7 b is attached to the side surface, and a scraper 7 c is attached to the lower surface. A side scraper is not essential. Each scraper is attached in a single number, preferably two or more. In the case of two or more, it is preferable that both are attached at an equal angle. The scraper 7c attached to the lower surface of the rotating disk 3 has a plate shape or a lattice shape extending in the radial direction and the vertical direction of the rotating disk 3, but is an upper notch extending horizontally inward from the outer end in the radial direction. 7e and a lower notch 7f are present. The scraper 7c is movable relative to the following upper ring plate 8a and lower ring plate 8b. In FIG. 2, only one scraper is displayed, and the other two are not shown. The upper ring plate 8a extends from the inner wall of the cylindrical portion 1a of the casing 1 so as to intersect the upper notch 7e of the lower surface scraper 7c in a non-contact state, and the peripheral end of the upper ring plate 8a and the rotating shaft 4 There is a gap for the mixture to pass through. The lower ring plate 8b extends from the lower end of the inner wall of the cylindrical portion 1a of the casing 1 so as to intersect the lower notch 7f of the lower surface scraper 7c in a non-contact state, and the peripheral end of the lower ring plate 8a and the rotating shaft There is a gap for the mixture to pass through. The rotating disk 3 rotates under this insertion state.

The mixing chamber 2 of the casing 1 is divided into an upper mixing chamber 2a, a middle upper mixing chamber 2c, a middle lower mixing chamber 2d, and a lower mixing chamber 2e by a rotating disk 3, an upper ring plate 8a, and a lower ring plate 8b. An upper supply port 9 for supplying a material to the upper mixing chamber 2a is opened at the center of the upper lid 1b of the casing 1, and lower ends of the upper supply pipes 9a and 9b are located. A liquid material is supplied to the upper mixing chamber 2a from the upper supply pipe 9a, and an aqueous solution of an emulsifier is supplied from the upper supply pipe 9b. The upper supply pipes 9a and 9b are both connected to the storage tank via a rotary pump (not shown). The liquid material and the aqueous emulsifier solution are continuously supplied at a constant ratio. The upper supply pipe may be a single double pipe. An inverted conical portion 1c is connected to the lower end of the side wall of the cylindrical portion 1a of the casing 1, and a lower supply pipe 9c for supplying water or an aqueous emulsifier solution penetrates the lower mixing chamber 2e. Since the bearing portion 6 protrudes from below in the center of the inverted conical portion 1c, it is annular and has a recess having a V-shaped cross section. A discharge port 11 for discharging the aqueous emulsion from the lower mixing chamber 2e to the outside is opened in the inverted conical portion 1c which is the bottom of the casing 1.

[Example 3] In the continuous mixing apparatus A of FIG. 1 (the width of the ring plate 8 is 30 mm), while rotating the rotating disk 3 (the peripheral speed of the rotating disk 3 is 24 m / sec), the viscosity is 3000 mPa · In the ratio of 100 parts by weight of trimethylsiloxy-blocked dimethylpolysiloxane at both ends of s, 0.6 part by weight of cetyltrimethylammonium chloride and 1.4 parts by weight of water, the dimethylpolysiloxane was fed into the upper supply pipe using a metering pump (not shown). 9a is continuously supplied to the upper mixing chamber 2a, and the cetyltrimethylammonium chloride and water are continuously supplied from the upper supply pipe 9b to the upper mixing chamber 2a using a metering pump (not shown). An aqueous liquid was obtained. At the same time, using a metering pump (not shown), water was continuously supplied from the lower supply pipe 9c to the lower mixing chamber 2e to be continuously mixed with the high viscosity grease-like aqueous liquid. The temperature was 30 ° C. or less from the discharge port 11 and a uniform O / W type dimethylpolysiloxane aqueous emulsion was continuously discharged. The average particle size of the aqueous emulsion was measured with a laser particle size distribution meter (manufactured by HORIBA) and found to be 1.0 μm. When the emulsion was visually observed immediately after preparation and after storage for 1 month, it was uniform and there was no oil film on the surface.

[Embodiment 4] In the continuous mixing apparatus B of FIG. 2 (the width of the upper ring plate 8a and the lower ring plate 8b is 30 mm), while rotating the rotating disk 3 (the peripheral speed of the rotating disk 3 is 24 m / sec). A dimethylpolysiloxane blocked with trimethylsiloxy group at both ends having a viscosity of 3000 mPa · s, 0.6 parts by weight of cetyltrimethylammonium chloride, and 1.4 parts by weight of water, using a metering pump (not shown). Polysiloxane is continuously supplied from the upper supply pipe 9a to the upper mixing chamber 2a, and the cetyltrimethylammonium chloride and water are continuously supplied from the upper supply pipe 9b to the upper mixing chamber 2a using a metering pump (not shown). A high viscosity grease-like aqueous liquid was obtained. At the same time, using a metering pump (not shown), water was continuously supplied from the lower supply pipe 9c to the lower mixing chamber 2e to be continuously mixed with the high viscosity grease-like aqueous liquid. The temperature was 30 ° C. or less from the discharge port 11 and a uniform O / W type dimethylpolysiloxane aqueous emulsion was continuously discharged. The average particle size of the aqueous emulsion was measured by a laser particle size distribution meter (manufactured by HORIBA) and found to be 0.4 μm. When the emulsion was visually observed immediately after preparation and after storage for 1 month, it was uniform and there was no oil film on the surface.

[Comparative Example] In Example 3, except that the ring plate 8 was removed, the same continuous emulsification apparatus as the above continuous emulsification apparatus A was used, and the same raw materials were used to try to emulsify and dilute under the same conditions. A uniform aqueous emulsion of O / W type dimethylpolysiloxane was obtained, but the average particle size was 5.0 μm. When the emulsion was visually observed immediately after preparation, an oil film was present on the surface.

A continuous mixing device B continuous mixing device 1 casing 1a cylindrical portion 1b upper lid 1c inverted cone portion 2 mixing chamber 2a upper mixing chamber 2b middle mixing chamber 2c middle upper mixing chamber 2d middle lower mixing chamber 2e lower mixing chamber 3 rotating disc 4 rotating shaft 5 Pulley 6 Bearing 7a Upper surface scraper 7b Side surface scraper 7c Lower surface scraper 7d Notch 7e Upper notch 7f Lower notch 8 Ring plate 8a Upper ring plate 8b Lower ring plate 9 Upper supply port 9a Upper supply tube 9b Upper supply tube 9c Lower Supply pipe 10 Lower supply port 11 Discharge port

Claims (4)

A rotating disk is installed in the mixing chamber in the casing, scrapers are attached to the upper and lower surfaces of the rotating disk, and a ring plate is not in contact between the notch of the lower surface scraper from the mixing chamber wall. The mixing chamber is extended by the rotating disk and the ring plate to form an upper mixing chamber for producing a coarse grease-like material, a middle mixing chamber for producing a grease-like material, and an aqueous emulsion. There is an upper supply port for supplying liquid material, water and emulsifier to the upper mixing chamber at the upper part of the casing, and water or an emulsifier aqueous solution to the lower mixing chamber on the side wall of the casing Continuous production of aqueous emulsion, characterized in that a lower supply port for supplying water and a discharge port for discharging aqueous emulsion to the outside from the lower mixing chamber are opened While rotating the rotary disk of the location, the liquid material from the upper feed port, water and an emulsifier was continuously fed to the upper mixing chamber to produce a crude grease-like material in the upper mixing chamber, intermediate section mixing chamber A grease-like product is produced by the above, an aqueous emulsion is produced by continuously supplying water or an aqueous emulsifier solution from the lower supply port to the lower mixing chamber and mixing with the grease-like product, and an aqueous emulsion is produced from the discharge port. A continuous production method of an aqueous emulsion, characterized by being continuously discharged to the outside.
A rotating disk is installed in the mixing chamber in the casing, and a scraper is attached to the upper and lower surfaces of the rotating disk, and the upper ring plate and the lower ring plate are notched between the notch of the lower surface scraper from the mixing chamber wall. The mixing chamber extends in a non-contact state, and the mixing chamber includes an upper mixing chamber for producing a coarse grease-like material by the rotating disk, the upper ring plate and the lower ring plate, and a medium for producing a grease-like material. It is divided into an upper mixing chamber, a middle lower mixing chamber, and a lower mixing chamber for producing an aqueous emulsion, and there is an upper supply port for supplying liquid material, water and emulsifier to the upper mixing chamber at the upper part of the casing. A lower supply port for supplying water or an aqueous emulsifier solution to the lower mixing chamber and a discharge port for discharging the aqueous emulsion from the lower mixing chamber to the outside of the casing. A liquid material, water and an emulsifier are continuously supplied from the upper supply port to the upper mixing chamber while rotating the rotating disk of the continuous production apparatus for an aqueous emulsion characterized by being open. A coarse grease-like material is produced in the mixing chamber, a grease-like material is produced in the middle mixing chamber or the middle upper mixing chamber and the middle lower mixing chamber, and water or an aqueous emulsifier solution is supplied from the lower supply port to the lower mixing chamber. A method for continuously producing an aqueous emulsion, characterized in that an aqueous emulsion is produced by continuously supplying and mixing with a grease-like substance, and the aqueous emulsion is continuously discharged from the outlet to the outside. The method for continuously producing an aqueous emulsion according to claim 1 or 2, wherein the liquid material is silicone oil. When the liquid material, water and the emulsifier are continuously supplied from the upper supply port to the upper mixing chamber, 0.1 to 30 parts by weight of the emulsifier and 0.5 to 20 parts by weight of water are added to 100 parts by weight of the liquid material. When water or an aqueous emulsifier solution is continuously supplied from the lower supply port to the lower mixing chamber, 10 to 200 parts by weight of water or 10 to 10 parts by weight of water is added to 100 parts by weight of the liquid material in the grease-like material. The method for continuously producing an aqueous emulsion according to claim 1 or 2, wherein 200 parts by weight and 0.1 to 20 parts by weight of an emulsifier are supplied.

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