摘要 |
<p>The invention provides coating pellets which are pellets containing bioactivator covered with a coating layer. The coating layer comprises polyurethane resin layer polymerized by polyisocyanate and polyester polyol, and a protecting layer which is disposed at the outer side of the polyurethane resin layer and comprises hydrogenated vegetable oil. The coating pellets have nothing to do with the distribution method and have a certain dissolution characteristic and are good as a slow release mode for bioactivator.</p> |