| abstract |
The invention relates to a method for producing active agent preparations with controlled release from a matrix. The active agent, or combination of active agents, is first of all granulated, either on its own or mixed with auxiliary agents, with the addition of binders or binder mixtures. These binders or binder mixtures are either added already in the molten state, or are converted to the molten state by heating during the process. After cooling and sieving, the granulate thus obtained is subsequently heat treated in a fluidized bed. |