| 摘要 |
PURPOSE:To efficiently prepare a microcapsule, by a method wherein an electrolyte is added to a microcapsule dispersion in quantity of 8-100pts. by wt. of 100pts. of water compounded at the time of the coating of the microcapsule to dehydrate the microcapsule membrane. CONSTITUTION:A hydrophobic liquid droplet is used as a core substance and coated with a phase separated substance of hydrophilic colloid to form a microcapsule. Subsequently, an electrolyte is added to a liquid having said microcapsule dispersed therein in quantity of 8-100pts. by wt. of 100pts. of water compounded at the time of the coating of the microcapsule to dehydrate the microcapsule membrane. As the hydrophilic colloid, an aqueous solution containing gelatin and an anionic hydrophilic high-molecular substance is pref. As the hydrophobic core substance, there are paraffin oil, tallow and silicone oil and, as the electrolyte, there are sulfuric acid, hydrochloric acid, phosphoric acid, citric acid, tartaric acid or an alkali metal salt or ammonium compound thereof. |
