PH modulated films for delivery of actives

Details PH modulated films for delivery of actives PH modulated films for delivery of actives

2011-03-22

2011-03-22

Brunsman, David M (Department: 1732)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C106S162800, C106S205010, C106S205710, C424S443000, C424S447000

Reexamination Certificate

active

07910641

ABSTRACT:
The invention relates to pH modulated films and methods of their preparation. The film compositions include at least one component having a non-neutral pH when combined with water; and a pH modulated polymer system selected to reduce or prevent synerisis when combined with the non-neutral component in combination with aqueous media. The films demonstrate a non-self-aggregating uniform heterogeneity. Desirably, the films disintegrate in water and may be formed by a controlled drying process, extrusion process, or other process that maintains the required uniformity of the film.

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