Release controlled transdermal therapeutic system

Details Release controlled transdermal therapeutic system Release controlled transdermal therapeutic system

1996-04-26

1997-12-09

Phelan, D. Gabrielle

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Web, sheet or filament bases; compositions of bandages; or...

424449, 424485, 424489, A61F 1302

Patent

active

056957793

ABSTRACT:
A release controlled transdermal therapeutic system having excellent storage stability and capable of optionally controlling the release rate of drugs, comprising a rubbery adhesive, microcapsules comprising a water-soluble wall material and encapsulating drugs as core material, and a water-insoluble, rubber- and rubber solvent-insoluble, water absorbing resin powder, such as starch-polyacrylic acid salt copolymers, the microcapsules and the resin powder being dispersed in the rubbery adhesive.

REFERENCES:
patent: 4573996 (1986-03-01), Kwiatek
patent: 4687481 (1987-08-01), Nuwayser

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