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US 12,729,275 B2Granted
Method for producing oil-in-water emulsion
AssigneeKao Corporation
InventorsDaiki Hirabayashi, Michiya Takagi, Minami Nakayama, Daiki Watanabe, Takafumi Kinoshita
Life of this patent
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Abstract
In a method for producing an oil-in-water emulsion, a jet of an oil-in-water pre-emulsion (L1) containing an oil phase dispersed in a first aqueous phase is added to a second aqueous phase (L2).
Claims22
A method for producing an oil-in-water emulsion, the method comprising:
- adding to a second aqueous phase a jet of an oil-in-water pre-emulsion containing an oil phase dispersed in a first aqueous phase at a linear velocity of 5 m/s or higher,
- wherein using a blending tank having a jet discharge section, the jet of the pre-emulsion is added from the jet discharge section to the second aqueous phase stored in the blending tank.
A method for producing an oil-in-water emulsion, the method comprising:
- adding to a second aqueous phase a jet of an oil-in-water pre-emulsion containing an oil phase dispersed in a first aqueous phase at a linear velocity of 5 m/s or higher,
- wherein the second aqueous phase has a viscosity from 0.1 mPa·s to 20,000 mPa·s inclusive at a temperature at which the jet of the pre-emulsion is added.
A method for producing an oil-in-water emulsion, the method comprising:
- adding to a second aqueous phase a jet of an oil-in-water pre-emulsion containing an oil phase dispersed in a first aqueous phase at a linear velocity of 5 m/s or higher,
- wherein a shear rate of the pre-emulsion during addition of the jet of the pre-emulsion to the second aqueous phase is from 2,500 s−1 to 500,000 s−1 inclusive.
Dependencies are inferred from the claim text.