| 摘要 |
PURPOSE: To provide a producing method of a powdery microcapsule hardly causing coagulation and breaking from an aq. dispersion of a microcapsule and to prepare the powdery microcapsule easy to disperse in an org. solvent and facilitate the production of a printing ink by using the microcapsule. CONSTITUTION: The powdery microcapsule is obtained by mixing a higher fatty amide or a metal salt of a higher fatty acid in the aq. dispersion of the microcapsule encapsulating a hydrophobic liq. so that a wt. ratio of the solid content of the microcapsule and the higher fatty acid based additive is kept in a range of 1:(0.05-3) and drying the mixture. The microcapsulated ink is obtained by dispersing the obtained powdery microcapsule in the org. solvent. |
