| 摘要 |
PURPOSE:To control discharge time and amount to be discharged or the like of core substance incorporated in a capsule by dispersing hydrophobic core substance incorporated with liquid substance having solubility for both an aqueous medium and the hydrophobic core substance in the aqueous medium. CONSTITUTION:Liquid substance having solubility for both an aqueous medium and hydrophobic core substance is incorporated beforehand in the hydrophobic core substance. After dispersing this hydrophobic core substance in an aqueous medium, a microcapsule is produced by forming a wall film on this core substance. As liquid substance dissolving in both the above-mentioned aqueous medium and the hydrophobic core substance, polyhydroxy alcohol, polyethylene glycol, polypropylene glycol and water soluble epoxy compd. or the like are used and amount to be added is preferably regulated to about 0.1-20pts.wt. for 100pts.wt. of hydrophobic substance. |
