MANUFACTURING METHOD OF OIL-IN-WATER TYPE EMULSION

PROBLEM TO BE SOLVED: To provide a manufacturing method of oil-in water type emulsion which has a long-lastingness of aroma and has good stability in passage of time. SOLUTION: The manufacturing method of oil-in water type emulsion comprises (i) the step of preparing an oil phase containing 0.25-7.5...

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Hauptverfasser:	AOSHIMA MAKOTO, OKI TORU, YASUE RYOJI, TSUKAGOSHI SUSUMU
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a manufacturing method of oil-in water type emulsion which has a long-lastingness of aroma and has good stability in passage of time. SOLUTION: The manufacturing method of oil-in water type emulsion comprises (i) the step of preparing an oil phase containing 0.25-7.5 mass% of moisture by mixing a cationic surfactant (A), a perfume (B) and a nonionic surfactant (C) containing 5-40 mass% of water, (ii) the step of forming a liquid crystal by adding a part of aqueous phase to the oil phase obtained at the step (i) and mixing the oil phase and the aqueous phase and (iii) the step of obtaining the oil-in water type emulsion with 300 nm or less of the average particle size by adding the residue of the aqueous phase to the liquid crystal obtained at the step (ii) and mixing the liquid crystal and the aqueous phase to invert the phase. COPYRIGHT: (C)2008,JPO&INPIT