WO2022244742A1 - 水中油型乳化物の製造方法 - Google Patents
水中油型乳化物の製造方法 Download PDFInfo
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- WO2022244742A1 WO2022244742A1 PCT/JP2022/020417 JP2022020417W WO2022244742A1 WO 2022244742 A1 WO2022244742 A1 WO 2022244742A1 JP 2022020417 W JP2022020417 W JP 2022020417W WO 2022244742 A1 WO2022244742 A1 WO 2022244742A1
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- aqueous phase
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- emulsion
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- 239000007764 o/w emulsion Substances 0.000 title claims abstract description 79
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 70
- 239000008346 aqueous phase Substances 0.000 claims abstract description 82
- 239000012071 phase Substances 0.000 claims abstract description 76
- 239000000839 emulsion Substances 0.000 claims abstract description 71
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 44
- 239000002245 particle Substances 0.000 claims description 32
- 238000002156 mixing Methods 0.000 claims description 19
- 229920001296 polysiloxane Polymers 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 76
- 239000000047 product Substances 0.000 description 40
- 239000007788 liquid Substances 0.000 description 12
- 239000007791 liquid phase Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 11
- 239000000203 mixture Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 238000005259 measurement Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- -1 dialkyl ether compounds Chemical class 0.000 description 6
- 238000004945 emulsification Methods 0.000 description 5
- 235000014113 dietary fatty acids Nutrition 0.000 description 4
- 239000000194 fatty acid Substances 0.000 description 4
- 229930195729 fatty acid Natural products 0.000 description 4
- 150000004665 fatty acids Chemical class 0.000 description 4
- 229920000161 Locust bean gum Polymers 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 239000003925 fat Substances 0.000 description 3
- 235000010420 locust bean gum Nutrition 0.000 description 3
- 239000000711 locust bean gum Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- 239000002562 thickening agent Substances 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 239000004205 dimethyl polysiloxane Substances 0.000 description 2
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 239000010696 ester oil Substances 0.000 description 2
- 239000003205 fragrance Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 230000003020 moisturizing effect Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 238000000790 scattering method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- PQUXFUBNSYCQAL-UHFFFAOYSA-N 1-(2,3-difluorophenyl)ethanone Chemical compound CC(=O)C1=CC=CC(F)=C1F PQUXFUBNSYCQAL-UHFFFAOYSA-N 0.000 description 1
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 description 1
- BKMUDUXPSVRLFZ-UHFFFAOYSA-N 2-methyl-1,3,5,7,9,2,4,6,8,10-pentaoxapentasilecane Chemical compound C[SiH]1O[SiH2]O[SiH2]O[SiH2]O[SiH2]O1 BKMUDUXPSVRLFZ-UHFFFAOYSA-N 0.000 description 1
- 244000215068 Acacia senegal Species 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- XMSXQFUHVRWGNA-UHFFFAOYSA-N Decamethylcyclopentasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 XMSXQFUHVRWGNA-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229920002148 Gellan gum Polymers 0.000 description 1
- 229920002907 Guar gum Polymers 0.000 description 1
- 229920000084 Gum arabic Polymers 0.000 description 1
- 229920000569 Gum karaya Polymers 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 description 1
- YBGZDTIWKVFICR-JLHYYAGUSA-N Octyl 4-methoxycinnamic acid Chemical compound CCCCC(CC)COC(=O)\C=C\C1=CC=C(OC)C=C1 YBGZDTIWKVFICR-JLHYYAGUSA-N 0.000 description 1
- 244000090599 Plantago psyllium Species 0.000 description 1
- 235000010451 Plantago psyllium Nutrition 0.000 description 1
- 241000934878 Sterculia Species 0.000 description 1
- 240000004584 Tamarindus indica Species 0.000 description 1
- 235000004298 Tamarindus indica Nutrition 0.000 description 1
- 229920001615 Tragacanth Polymers 0.000 description 1
- 235000010489 acacia gum Nutrition 0.000 description 1
- 239000000205 acacia gum Substances 0.000 description 1
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000000305 astragalus gummifer gum Substances 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010418 carrageenan Nutrition 0.000 description 1
- 239000000679 carrageenan Substances 0.000 description 1
- 229920001525 carrageenan Polymers 0.000 description 1
- 229940113118 carrageenan Drugs 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 235000010492 gellan gum Nutrition 0.000 description 1
- 239000000216 gellan gum Substances 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 235000010417 guar gum Nutrition 0.000 description 1
- 239000000665 guar gum Substances 0.000 description 1
- 229960002154 guar gum Drugs 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 229940071826 hydroxyethyl cellulose Drugs 0.000 description 1
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 description 1
- 239000001863 hydroxypropyl cellulose Substances 0.000 description 1
- 229940071676 hydroxypropylcellulose Drugs 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 235000010494 karaya gum Nutrition 0.000 description 1
- 239000000231 karaya gum Substances 0.000 description 1
- 229940039371 karaya gum Drugs 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- HMMGMWAXVFQUOA-UHFFFAOYSA-N octamethylcyclotetrasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 HMMGMWAXVFQUOA-UHFFFAOYSA-N 0.000 description 1
- 229960001679 octinoxate Drugs 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229920001277 pectin Polymers 0.000 description 1
- 235000010987 pectin Nutrition 0.000 description 1
- 239000001814 pectin Substances 0.000 description 1
- 229960000292 pectin Drugs 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 229940047670 sodium acrylate Drugs 0.000 description 1
- 235000010413 sodium alginate Nutrition 0.000 description 1
- 239000000661 sodium alginate Substances 0.000 description 1
- 229940005550 sodium alginate Drugs 0.000 description 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- 235000002316 solid fats Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 229920001285 xanthan gum Polymers 0.000 description 1
- 235000010493 xanthan gum Nutrition 0.000 description 1
- 239000000230 xanthan gum Substances 0.000 description 1
- 229940082509 xanthan gum Drugs 0.000 description 1
- UHVMMEOXYDMDKI-JKYCWFKZSA-L zinc;1-(5-cyanopyridin-2-yl)-3-[(1s,2s)-2-(6-fluoro-2-hydroxy-3-propanoylphenyl)cyclopropyl]urea;diacetate Chemical compound [Zn+2].CC([O-])=O.CC([O-])=O.CCC(=O)C1=CC=C(F)C([C@H]2[C@H](C2)NC(=O)NC=2N=CC(=CC=2)C#N)=C1O UHVMMEOXYDMDKI-JKYCWFKZSA-L 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/40—Mixing liquids with liquids; Emulsifying
- B01F23/41—Emulsifying
- B01F23/413—Homogenising a raw emulsion or making monodisperse or fine emulsions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
- B01F25/21—Jet mixers, i.e. mixers using high-speed fluid streams with submerged injectors, e.g. nozzles, for injecting high-pressure jets into a large volume or into mixing chambers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/96—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with openwork frames or cages
Definitions
- the present invention relates to a method for producing an oil-in-water emulsion.
- a method in which a raw material emulsion prepared in advance is mixed with an aqueous phase or an oil phase to produce an emulsion as a final product.
- a primary emulsion in which phase A droplets are dispersed in phase B is used as a starting material, and the primary emulsion is placed in a container configured with a coaxial cylinder to apply shear stress.
- a method is disclosed for producing a secondary emulsion in which the diameter of the droplets of phase A is smaller than that of the primary emulsion.
- part of the aqueous phase and all of the oil phase, all of the water phase and part of the oil phase, or part of the water phase and part of the oil phase are continuously supplied to an emulsifier.
- a pre-emulsified product, the pre-emulsified product and the remaining aqueous phase and/or oil phase are supplied to another emulsifier for stirring and mixing.
- Patent Document 3 discloses a method for producing a fatty acid neutralized product in which a fatty acid mixture is discharged in a basic aqueous solution in a jet state.
- the present invention is a method for producing an oil-in-water emulsion in which an oil-in-water pre-emulsion in which an oil phase is dispersed in a first aqueous phase is jet-added into a second aqueous phase.
- an oil-in-water pre-emulsion in which the oil phase is dispersed in the first aqueous phase is jet-added into the second aqueous phase.
- jet state in the present application means an oil-in-water state in which the oil phase is dispersed in the first aqueous phase from the pores arranged in the second aqueous phase to a wide area filled with the second aqueous phase. It refers to a state in which the pre-emulsified product of the mold is ejected, droplets of the pre-emulsified product smaller than the pore diameter are formed, and the droplets can be visually confirmed to diffuse from the pores.
- jet addition refers to adding an oil-in-water pre-emulsion in a "jet state" to a wide area filled with the second aqueous phase from the holes arranged in the second aqueous phase. Say things.
- a mixer with a relatively simple structure can be used because high-shear mixing of the oil phase and the water phase is not required.
- Such mixers are inexpensive to install and maintain, are easy to clean, and are suitable for mass production.
- an apparatus having a simple structure including a blending tank having a jet discharge part such as a jet nozzle is used, and the pre-emulsified product is discharged from the jet discharge part.
- a jet discharge part such as a jet nozzle
- the pre-emulsified product is discharged from the jet discharge part.
- the cost of introducing and maintaining such equipment can be kept low.
- the cleanability of the apparatus is excellent, the oil-in-water emulsion to be produced can be switched in a short time, and high productivity can be obtained. Furthermore, it is possible to mass-produce one lot of the oil-in-water emulsion.
- an oil phase and a first aqueous phase are mixed to prepare an oil-in-water pre-emulsion.
- the method for preparing the pre-emulsified product is not particularly limited, and examples include general high-pressure emulsification, phase inversion emulsification, membrane emulsification, D-phase emulsification, and the like.
- oil phase examples include fragrances, oils, antioxidants, cooling agents, dyes, pigments, silicones, solvents, and oil-soluble polymers.
- the oil phase preferably contains one or more of these, the viewpoint of producing an oil-in-water emulsion having a small average particle size of the oil phase and the viewpoint of improving the stability of the oil-in-water emulsion Therefore, it is more preferable to contain an oil agent and/or silicone, and it is even more preferable to contain silicone.
- the oil agent is preferably an organic compound with a solubility of less than 1 g in 100 g of water.
- the solubility of this oil agent in 100 g of water is the solubility at 25° C. (1013.25 hPa).
- the solubility of the oil agent in 100 g of water is preferably 0.5 g or less, more preferably 0.1 g or less, and may be 0 g.
- the solubility for example, the Chemical Society of Japan, 1985, No. 11, p2116-2119, and the Chemical Society of Japan, 1982, No. 11, p.
- the oils include liquid oils that are liquid at 20°C and solid fats that are solid at 20°C.
- the oil may contain only liquid oil, may contain only solid fat, or may contain both of them.
- oils examples include alcohols, ester oils, hydrocarbon oils, dialkyl ether compounds, amine compounds, amide compounds, fats and oils, and higher fatty acids.
- the oil agent preferably contains one or more of these.
- the oil agent may contain those used as fragrances, antioxidants, cooling agents, moisturizing agents, dyes, pigments, and the like.
- silicones include dimethylpolysiloxane, methylpolysiloxane, methylphenylpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, methylhydrogenpolysiloxane, silicone resins, amino-modified silicones, alkyl-modified silicones, and polyethers. modified silicone, glyceryl-modified silicone, silicone wax and the like.
- the silicone preferably contains one or more of these, and more preferably contains dimethylpolysiloxane from the viewpoint of obtaining a dispersion of fine particles.
- the silicone may contain one used as a feel-improving agent or a moisturizing component.
- the first aqueous phase may be water only, or may be an aqueous solution in which a water-soluble substance is dissolved in water.
- water-soluble substances include thickeners and emulsion stabilizers.
- the thickener preferably contains one or more of polysaccharides, such as sodium alginate, carboxymethylcellulose and its salts, carrageenan, xanthan gum, poly It more preferably contains one or more of sodium acrylate, hydroxyethylcellulose, hydroxypropylcellulose, pectin, tragacanth gum, gum arabic, guar gum, karaya gum, locust bean gum, gellan gum, tamarind gum, and psyllium seed gum.
- polysaccharides such as sodium alginate, carboxymethylcellulose and its salts, carrageenan, xanthan gum, poly It more preferably contains one or more of sodium acrylate, hydroxyethylcellulose, hydroxypropylcellulose, pectin, tragacanth
- the emulsion stabilizer preferably contains one or more compounds having a polar group, and one or two neutral compounds. More preferably, it contains one or more of the neutral polymers, and more preferably contains polyvinyl alcohol.
- the first aqueous phase may be a dispersion liquid in which dispersed particles are dispersed in water.
- the mass ratio of the content of the oil phase to the content of the first aqueous phase in the pre-emulsified product is preferably 0.01 or more, more preferably 0.01 or more, from the viewpoint of improving the freedom of formulation. is 0.05 or more, more preferably 0.1 or more, more preferably 0.3 or more, and from the viewpoint of obtaining a stable oil-in-water pre-emulsion, preferably 4 or less, more preferably 3.5 or less , more preferably 3 or less, and even more preferably 2 or less.
- the average particle size of the oil phase in the pre-emulsified product is preferably 2000 ⁇ m or less, more preferably 1000 ⁇ m or less, even more preferably 500 ⁇ m or less, still more preferably 500 ⁇ m or less, from the viewpoint of producing an oil-in-water emulsion having a small average particle size of the oil phase. It is 100 ⁇ m or less, more preferably 70 ⁇ m or less, preferably 1 ⁇ m or more, more preferably 10 ⁇ m or more.
- the average particle size of the oil phase in the present application is an area-based average particle size measured by a laser diffraction scattering method using a laser diffraction/scattering particle size distribution analyzer.
- the preliminary emulsion is jet-added into the second aqueous phase to obtain the final oil-in-water emulsion.
- the second aqueous phase may be water only, but may be an aqueous solution in which a water-soluble substance is dissolved in water, or a dispersion in which dispersed particles are dispersed in water, similarly to the first aqueous phase. good.
- the second aqueous phase preferably has the same constituents as the first aqueous phase of the pre-emulsified product.
- the second aqueous phase may have the same composition as the first aqueous phase or may have a different composition.
- the jet addition of the pre-emulsified product into the second aqueous phase is preferably carried out using a nozzle.
- the tip of the nozzle is in the second aqueous phase.
- the inner diameter of the nozzle is preferably 0.01 mm or more, more preferably 0.05 mm or more, and still more preferably 0.1 mm or more. It is more preferably 10 mm or less, still more preferably 1 mm or less.
- the inner diameter of the nozzle is the hydraulic diameter of the opening shape.
- the viscosity at the temperature at which the pre-emulsified product is added to the second aqueous phase is preferably 1 mPa s or higher, more preferably 10 mPa s or higher, and still more preferably 100 mPa s. From the viewpoint of reducing pressure loss in the nozzle, the viscosity is preferably 15000 mPa ⁇ s or less, more preferably 10000 mPa ⁇ s or less, and even more preferably 6000 mPa ⁇ s or less.
- the viscosity of the pre-emulsion of the second aqueous phase at the temperature at which the jet stream is added is preferably 0.1 mPa s or more, more preferably 0.5 mPa s, from the viewpoint of suppressing creaming of the produced oil-in-water emulsion.
- the viscosity of the second aqueous phase is preferably lower than the viscosity of the pre-emulsion.
- the linear velocity when the preliminary emulsion is added to the second aqueous phase is preferably 5 m / s or more, more preferably 10 m / s. Above, more preferably 20 m/s or more, still more preferably 30 m/s or more, and from the viewpoint of reducing the device load, preferably 100 m/s or less, more preferably 50 m/s or less, and still more preferably 40 m/s or less. is.
- the "linear velocity of the pre-emulsified material" in the present application is the velocity of the liquid in the ejection direction of the pre-emulsified material.
- the absolute value of the linear velocity of the pre-emulsified material is obtained by dividing the mass flow rate of the pre-emulsified material by the density of the pre-emulsified material, further dividing it by the area of the discharge hole, and converting it per second.
- the shear rate at the time of jet addition of the pre-emulsified product to the second aqueous phase is preferably 02,500 s -1 or more, more preferably 0.5 s -1 or more, still more preferably 10,000 s -1 or more, still more preferably 20,000 s -1 or more, still more preferably 30,000 s -1 or more is preferably 500,000 s ⁇ 1 or less, more preferably 400,000 s ⁇ 1 or less, and even more preferably 300,000 s ⁇ 1 or less, from the viewpoint of reducing the load on the device.
- This shear rate is calculated by dividing the linear velocity of the pre-emulsified material by the inner diameter of the nozzle when the jet addition of the pre-emulsified material into the second aqueous phase is performed using a nozzle (linear velocity of the pre-emulsified material / inside diameter of the nozzle).
- the average particle size of the oil phase in the produced oil-in-water emulsion is preferably 35 ⁇ m or less, more preferably 30 ⁇ m or less, even more preferably 20 ⁇ m or less, and preferably 1 ⁇ m or more.
- Ratio of the average particle size of the oil phase in the oil-in-water emulsion to the average particle size of the oil phase in the pre-emulsified product is preferably 0.001 or more, more preferably 0.01 or more, and still more preferably 0.1 or more from the viewpoint of producing an emulsion with energy saving, and from the viewpoint of producing a fine emulsion, preferably It is 0.9 or less, more preferably 0.7 or less, and still more preferably 0.6 or less.
- the present invention further discloses the following aspects.
- oil agent contains one or more of alcohol, ester oil, hydrocarbon oil, dialkyl ether compound, amine compound, amide compound, fat and oil, and higher fatty acid
- the oil agent contains one or more of alcohol, ester oil, hydrocarbon oil, dialkyl ether compound, amine compound, amide compound, fat and oil, and higher fatty acid
- FIG. 1 shows the configuration of an oil-in-water emulsion manufacturing apparatus 10 used in this example.
- the oil-in-water emulsion manufacturing apparatus 10 includes a preliminary tank 11 and a blending tank 12.
- a liquid supply pipe 13 extends from the bottom of the preliminary tank 11 and is connected to a circular jet nozzle 14 provided on the side of the bottom of the mixing tank 12 .
- a pump 15 for liquid feeding is interposed in the liquid supply pipe 13 .
- Example 1 (Production of oil-in-water emulsion) ⁇ Example 1 and Comparative Example 1>
- an oil-in-water pre-emulsion L1 in which the oil phase having the composition shown in Table 1 was dispersed in the first water phase and the mass ratio of the oil phase/first water phase was 0.5 was prepared.
- the preliminary tank 11 was charged with the emulsion L1.
- a second liquid phase L2 having the composition shown in Table 1 was prepared, and the second liquid phase L2 was charged into the blending tank 12 .
- the commercially available materials used to prepare the oil phase and first aqueous phase of the pre-emulsified product L1 and the second aqueous phase L2 are as follows.
- Silicone Methylcyclopentasiloxane (TSF405A manufactured by Momentive) Oil: Ethylhexyl methoxycinnamate (Ubinal MC80, manufactured by BASF Japan)
- Thickener Locust bean gum (Soar Locust A120, manufactured by Mitsubishi Chemical Foods)
- Emulsion stabilizer Polyvinyl alcohol (Gosenol EG-05, Mitsubishi Chemical Co., Ltd.)
- the pump 15 (diaphragm pump)
- the preliminary emulsion L1 in the preliminary tank 11 is transferred to the second liquid phase L2 in the mixing tank 12 via the liquid supply pipe 13 under the conditions shown in Table 1. supplied by At this time, the pre-emulsion L1 was discharged into the second liquid phase L2 from the jet nozzle 14 having an inner diameter of 0.35 mm to produce an oil-in-water emulsion. At this time, it was possible to visually confirm through the transparent wall surface of the mixing vessel 12 that the pre-emulsified product L1 was ejected from the jet nozzle 14 and diffused.
- Comparative Example 1 a water-in-oil pre-emulsion having an oil phase/first aqueous phase mass ratio of 5.0 was prepared so that the composition of the final oil-in-water emulsion was the same as in Example 1. and the second liquid phase were used.
- Examples 2 to 10 and Comparative Example 2> The same operation as in Example 1 was performed except that the conditions were changed to those described in Tables 1 to 5.
- Example 11 an oil-in-water pre-emulsion L1 in which the oil phase having the composition shown in Table 6 was dispersed in the first water phase and the mass ratio of the oil phase/first water phase was 0.5 was prepared.
- the preliminary tank 11 was charged with the emulsion L1.
- a second liquid phase L2 having the composition shown in Table 6 was prepared, and the second liquid phase L2 was charged into the blending tank 12.
- the commercially available materials used to prepare the oil phase and first aqueous phase of the pre-emulsified product L1 and the second aqueous phase L2 are as described above.
- the pump 15 (rotary pump)
- the preliminary emulsion L1 in the preliminary tank 11 is transferred to the second liquid phase L2 in the mixing tank 12 via the liquid supply pipe 13 under the conditions shown in Table 6. supplied by At this time, the preliminary emulsion L1 was discharged into the second liquid phase L2 from the jet nozzle 14 having an inner diameter of 5 mm to produce an oil-in-water emulsion. At this time, it was confirmed visually from above the mixing tank 12 that the pre-emulsified product L1 was ejected from the jet nozzle 14 and diffused.
- Example 12 the same operation as in Example 11 was performed, except that the conditions were changed to those shown in Table 6.
- the average particle size of the oil phase in the oil-in-water emulsions obtained in Examples 1 to 12 was smaller than the inner diameter of the circular jet nozzle 14 used in each Example.
- Tables 1-6 The results are shown in Tables 1-6. In Comparative Example 1, the measurement could not be performed because the emulsified state of the pre-emulsified product could not be maintained.
- Rotation speed of 60 rpm measurement time of 1 minute Viscosity exceeding 50 mPa ⁇ m and less than 20000 Pa ⁇ m Rotor No. 2.
- Rotation speed 6 rpm measurement time 1 minute Viscosity of 20000 mPa ⁇ m or more Rotor No. 4, rotation speed 6 rpm, measurement time 1 minute
- the present invention is useful in the technical field of methods for producing oil-in-water emulsions.
Abstract
Description
図1は、本実施例で用いた水中油型乳化物製造装置10の構成を示す。
<実施例1及び比較例1>
実施例1では、表1に示す組成の油相が第1水相に分散した油相/第1水相の質量比が0.5の水中油型の予備乳化物L1を調製し、その予備乳化物L1を予備槽11に仕込んだ。表1に示す組成の第2液相L2を調製し、その第2液相L2を配合槽12に仕込んだ。なお、予備乳化物L1の油相及び第1水相、並びに第2水相L2の調製に用いた市販材料は、次の通りである。
油剤:メトキシケイ皮酸エチルヘキシル(ユビナールMC80 BASFジャパン社製)
増粘剤:ローカストビーンガム(ソアローカストA120 三菱ケミカルフーズ社製)
乳化安定剤:ポリビニルアルコール(ゴーセノールEG-05 三菱ケミカル社製)
表1乃至5に記載の条件に変更したことを除いて、実施例1と同様の操作を行った。
実施例11では、表6に示す組成の油相が第1水相に分散した油相/第1水相の質量比が0.5の水中油型の予備乳化物L1を調製し、その予備乳化物L1を予備槽11に仕込んだ。表6に示す組成の第2液相L2を調製し、その第2液相L2を配合槽12に仕込んだ。なお、予備乳化物L1の油相及び第1水相、並びに第2水相L2の調製に用いた市販材料は、前述の通りである。
実施例1乃至12及び比較例2のそれぞれで得られた予備乳化物L1について、油相の平均粒径(22℃)を、レーザー回折/散乱式粒度分布測定装置(LA-960S 堀場製作所社製)を用いたレーザー回折散乱法により面積基準平均粒径として測定した。同様に、実施例1乃至12及び比較例1及び2のそれぞれで得られた水中油型乳化物について、油相の平均粒径(22℃)を測定した。実施例1乃至12で得られた水中油型乳化物中の油相の平均粒径は、各実施例で用いた円形噴流ノズル14の内径より小さかった。実施例1乃至12では、噴流ノズル14から予備乳化物L1が噴き出し、拡散することが目視で確認することができた。したがって、実施例1乃至12では、噴流ノズル14から吐出した流体の状態は、噴流状態であると判断した。その結果については表1乃至6に示す。なお、比較例1では、予備乳化物の乳化状態の維持ができなかったため、測定を行うことができなかった。
実施例1乃至12及び比較例2のそれぞれで得られた予備乳化物L1及び第2水相L2について、下記の条件で、B型粘度計(BL 東機産業社製)を用いて粘度(22℃)を測定した。同様に、実施例1乃至12及び比較例1乃至2のそれぞれで得られた水中油型乳化物について、粘度を測定した。その結果については表1乃至6に示す。測定温度は、予備乳化物L1の第2液相L2への添加時と同じく室温(22℃)である。
粘度が50mPa・mを超えて20000Pa・m未満の場合 ローターNo.2、回転数6rpm、測定時間1分間
粘度が20000mPa・m以上の場合 ローターNo.4、回転数6rpm、測定時間1分間
11 予備槽
12 配合槽
13 液供給管
14 噴流ノズル(噴流吐出部)
15 ポンプ
L1 予備乳化物
L2 第2液相
Claims (16)
- 油相が第1水相に分散した水中油型の予備乳化物を、第2水相中に噴流添加する水中油型乳化物の製造方法。
- 前記第2水相の前記予備乳化物の噴流添加時の温度における粘度が0.1mPa・s以上20000mPa・s以下である、請求項1に記載された水中油型乳化物の製造方法。
- 前記第2水相の前記予備乳化物の噴流添加時の温度における粘度が1mPa・s以上10000mPa・s以下である、請求項1又は2に記載された水中油型乳化物の製造方法。
- 噴流吐出部を有する配合槽を用い、前記噴流吐出部から前記予備乳化物を、前記撹拌配合槽に貯留された前記第2水相中に噴流添加する、請求項1乃至3のいずれかに記載された水中油型乳化物の製造方法。
- 前記予備乳化物における前記油相の含有量の前記第1水相の含有量に対する質量比が0.01以上4以下である、請求項1乃至4のいずれかに記載された水中油型乳化物の製造方法。
- 前記予備乳化物における前記油相の平均粒径が2000μm以下である、請求項1乃至5のいずれかに記載された水中油型乳化物の製造方法。
- 前記予備乳化物における前記油相の平均粒径が1μm以上500μm以下である、請求項1乃至6のいずれかに記載された水中油型乳化物の製造方法。
- 前記予備乳化物の前記第2水相への噴流添加時の温度における粘度が1mPa・s以上15000mPa・s以下である、請求項1乃至7のいずれかに記載された水中油型乳化物の製造方法。
- 前記第2水相の粘度(前記予備乳化物の噴流添加時の温度)が、前記予備乳化物の粘度(前記第2水相への噴流添加時の温度)よりも低い、請求項1乃至8のいずれかに記載された水中油型乳化物の製造方法。
- 前記第2水相は、前記予備乳化物の前記第1水相と構成成分が同一である、請求項1乃至9のいずれかに記載された水中油型乳化物の製造方法。
- 前記油相が油剤及び/又はシリコーンを含有する、請求項1乃至10のいずれかに記載された水中油型乳化物の製造方法。
- 前記製造される水中油型乳化物における前記油相の平均粒径が35μm以下である、請求項1乃至11のいずれかに記載された水中油型乳化物の製造方法。
- 前記予備乳化物の前記第2水相中への噴流添加をノズルを用いて行う、請求項1乃至12いずれかに記載された水中油型乳化物の製造方法。
- 前記予備乳化物の前記第2水相への噴流添加時の線速が5m/s以上である、請求項1乃至13いずれかに記載された水中油型乳化物の製造方法。
- 前記予備乳化物の前記第2水相への噴流添加時の線速が10m/s以上100m/s以下である、請求項1乃至14いずれかに記載された水中油型乳化物の製造方法。
- 前記予備乳化物の前記第2水相への噴流添加時のせん断速度が0.25万s-1以上50万s-1以下である、請求項1乃至15いずれかに記載された水中油型乳化物の製造方法。
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JPS312881B1 (ja) * | 1954-08-14 | 1956-04-17 | ||
JPS5484630A (en) * | 1977-12-16 | 1979-07-05 | Toyo Tire & Rubber Co Ltd | Improved combustion denitration method using emulsified fuel |
JPS5895220U (ja) * | 1981-12-18 | 1983-06-28 | 株式会社ダイクレ | 油中水滴型乳化燃料の製造装置 |
JPS5949832A (ja) * | 1982-08-14 | 1984-03-22 | バイエル・アクチエンゲゼルシヤフト | 分散液の製造方法及び装置 |
JPH05154367A (ja) | 1991-12-04 | 1993-06-22 | Kao Corp | 乳化物の製造方法 |
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WO2020129723A1 (ja) | 2018-12-19 | 2020-06-25 | 花王株式会社 | 脂肪酸中和物の製造方法 |
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JPS5895220U (ja) * | 1981-12-18 | 1983-06-28 | 株式会社ダイクレ | 油中水滴型乳化燃料の製造装置 |
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JPH05154367A (ja) | 1991-12-04 | 1993-06-22 | Kao Corp | 乳化物の製造方法 |
JPH11509473A (ja) | 1996-04-16 | 1999-08-24 | サントル ナシオナル ドゥ ラ ルシェルシェ サイアンティフィク(セエヌエールエス) | 乳濁液の製造方法 |
WO2020129723A1 (ja) | 2018-12-19 | 2020-06-25 | 花王株式会社 | 脂肪酸中和物の製造方法 |
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JOURNAL OF THE CHEMICAL SOCIETY OF JAPAN, vol. 11, 1985, pages 2116 - 2119 |
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