Volatile active substance containing plaster that may be produce

Details Volatile active substance containing plaster that may be produce Volatile active substance containing plaster that may be produce

1997-10-24

1999-05-11

Page, Thurman K.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

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

424443, 424447, 424449, A61F13/00

Patent

active

059026014

ABSTRACT:
An active substance-containing adhesive patch with a pressure sensitive fixing device, containing at least one readily volatile ingredient, consisting of a substantially active substance-impermeable backing layer, at least two active substance-containing matrix layers and a removable protective layer, whereby the matrix layer containing the readily volatile active substance is laminated on a separately produced composite of one or more further matrix layers which are active substance-free, is characterized in that the first active substance-containing matrix layer consists of a spreadable molecularly disperse solution of the matrix base material in the readily volatile ingredient as the exclusive solvent, the composite which is obtained after laminating forming an active substance matrix that is as a whole shear-resistant after migration of the readily volatile ingredient into the composite.

REFERENCES:
patent: 4379454 (1983-04-01), Campbell et al.
patent: 4915950 (1990-04-01), Miranda et al.
patent: 5164416 (1992-11-01), Nagai et al.
patent: 5306502 (1994-04-01), Jaeger et al.
patent: 5462746 (1995-10-01), Wolter et al.
patent: 5538736 (1996-07-01), Hoffmann et al.

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