METHOD FOR DELIVERING AN ACTIVE INGREDIENT BY CONTROLLED TIME RELEASE UTILIZING A NOVEL DELIVERY VEHICLE WHICH CAN BE PREPARED BY A PROCESS UTILIZING THE ACTIVE INGREDIENT AS A POROGEN

摘要

METHOD FOR DELIVERING AN ACTIVE INGREDIENTBY CONTROLLED TIME RELEASE UTILIZING A NOVELDELIVERY VEHICLE WHICH CAN BE PREPARED BY APROCESS UTILIZING THE ACTIVE INGREDIENT AS A POROGENABSTRACT OF THE INVENTIONDelivery vehicles comprised of a polymericbead having a network of pores with an active ingredientheld within the network are provided for use in a methodto provide controlled release of the active ingredient.The network of pores is substantially non-collapsibleupon removal of the active ingredient and the deliveryvehicles are polymerized by a process in which the activeingredient also comprises the porogen during formationof the network of pores.