| abstract |
Although it is known to encapsulate various substances in polyurea microcapsules, it has proven difficult to obtain satisfactory microcapsules with the addition of alcoholic substances. There is a method in which polyurea microcapsules are formed by interfacial polymerization between an aqueous phase and a water-immiscible phase, and the properties of the water-immiscible phase, particularly the solubility parameter, are well compatible with the corresponding properties of polyurea. Found this time. Microcapsules produced by this method have improved stability, mechanical strength and controlled release properties. |