Film and film-forming compositions
The invention provides films and film forming compositions that can be applied onto a tissue surface. The film and the film forming composition comprise at least one polycarboxylated polymer and at least one polysaccharide.
1 . A film comprising at least one polycarboxylated polymer and at least one polysaccharide.
2 . The film of claim 1 further comprising an active.
3 . The film of claim 2 wherein the active is a pharmaceutical agent.
4 . The film of claim 1 , wherein the polycarboxylated polymer is a crosslinked poly(acrylic acid).
5 . The film of claim 4 , wherein the polysaccharide is a starch.
6 . A film forming composition comprising at least one polycarboxylated polymer and at least one polysaccharide in water or other solvent.
7 . The film forming composition of claim 6 further comprising an active.
8 . The film forming composition of claim 7 wherein the active is a pharmaceutical agent.
9 . The film forming composition of claim 8 , wherein the polycarboxylated polymer is a crosslinked poly(acrylic acid).
10 . The film forming composition of claim 9 , wherein the polysaccharide is a starch.
11 . A method of delivering an active to an individual comprising applying the film of claim 1 to a moist tissue surface of said individual whereby the film adheres to said moist surface.
12 . The method of claim 11 wherein said film is applied over a pre-applied active.
13 . The method of claim 11 wherein said film comprises of an active.
14 . The method of claim 11 wherein the film is applied onto a premoistened tissue surface.
15 . The method of claim 11 wherein the film is applied onto a mucosal surface.
16 . A method of applying a film to a tissue surface of an individual comprising applying the film forming composition of claim 6 to a tissue surface of an individual and allowing the composition to form a film.
17 . The method of claim 16 wherein said film forming composition is applied over a pre-applied active.
18 . The method of claim 16 wherein said film forming composition comprises an active.
19 . A method of forming a film comprising preparing a solution of at least one polycarboxylated polymer and at least one polysaccharide and coating the solution onto a substrate to form a film.
20 . The method of claim 19 wherein the solution is coated onto the surface of an individual's skin.