| 摘要 |
<p>Provided is a process for preparing a W/O emulsion, said process permitting a wide range of conditions. The process for preparing a W/O emulsion includes a step comprising: adding water that contains either closed vesicles formed from an amphiphilic substance which can spontaneously form closed vesicles, or particles of a hydroxyl-containing condensation polymer, or both and that is to constitute the aqueous phase of the emulsion to an oil that contains a substance to be emulsified and that is to constitute the oil phase of the emulsion; and mixing the oil and the water together. It is preferable that the mixing is conducted by initiating the stirring before the completion of the addition. Further, it is preferable that the water is added in an amount of at most 50 mass% relative to the oil-including system to which the water is to be added.</p> |
