| 摘要 |
PURPOSE:To obtain the titled plastic prevented from undergoing mutual adhesion of particles during storage and having a persistent medicinal effect, by mixing medicated plastic particles with non-medicated plastic powders of a softening point higher than that of the medicated particles and heating the mixture with a high-frequency current. CONSTITUTION:Medicated plastic particles are mixed with non-medicated plastic powders having m.p. or a softening point higher than that of the medicated particles. This mixture is heated with a high-frequency current to soften the medicated plastic particles to adhere unsoftened non-medicated plastic powder to the surfaces of the medicated particles. The medicated plastic particles to be used are usually those of a thermoplastic synthetic resin, and one compatible with chemicals is desirable. Examples of the chemicals include perfumes, rust- preventive, agents, fungicides, insect repellents, rodent repellents, deodorants, insecticides and stain-proof agents. |
