| 摘要 |
PURPOSE:To produce a capsule of high quality by obtaining a capsule solution with a high concentration and a low viscosity with the presence of a styrene sulfonic acid-based polymer in the system when a microminiature capsule is produced from melamine and formaldehyde. CONSTITUTION:When a capsule wall comprising a copolymer of melamine and formaldehyde is formed around a core emulsified or dispersed in a water vehicle, a polystyrene sulfonic acid-based polymer such as polystyrene solfonic acid is provided as an anionic high polymer electrolyte. As a result, a capsule solution with a high concentration and a low viscosity can be obtained. The microcapsule thus obtained provides an performance excellent in heat resistance and transmissibility. |
