Method for delivering an active ingredient by controlled time re

Details Method for delivering an active ingredient by controlled time re Method for delivering an active ingredient by controlled time re

1985-10-04

1987-09-01

Griffin, Ronald W.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Particulate form

521 63, 424502, 514963, 514965, C08J 928

Patent

active

046908250

ABSTRACT:
Delivery vehicles comprised of a polymeric bead having a network of pores with an active ingredient held within the network are provided for use in a method to provide controlled release of the active ingredient. The network of pores is substantially non-collapsible upon removal of the active ingredient and the delivery vehicles are polymerized by a process in which the active ingredient also comprises the porogen during formation of the network of pores.

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