Drug – bio-affecting and body treating compositions – Designated organic nonactive ingredient containing other... – Solid synthetic organic polymer
Patent
1992-03-04
1993-01-05
Page, Thurman K.
Drug, bio-affecting and body treating compositions
Designated organic nonactive ingredient containing other...
Solid synthetic organic polymer
424 7824, 424405, 424616, 514781, A61K 3179, A61K 3340, A61K 4738
Patent
active
051771136
ABSTRACT:
A free-standing, porous foam product comprising an integral network of PVP molecules hydrogen-bonded to H.sub.2 O.sub.2 molecules, optionally including a water-soluble gelling agent; e.g. hydroxyethyl cellulose; in an amount up to 60% by weight of the product, its PVP content being about 25-90% by weight of the product, and the H.sub.2 O.sub.2 content being about 5-24% by weight. In the absence of a gelling agent, the product has a bulk density of about 0.3 to about 0.5 g/cc and a porosity of about 60-70%. When a gelling agent is present in the product, its bulk density and porosity of the product is substantially reduced and, accordingly, it has a more foam-like structure and appearance.
REFERENCES:
patent: 3480557 (1969-11-01), Shiraeff
patent: 4769013 (1988-09-01), Lorenz et al.
Biss Russell B.
Cohen Jeffrey M.
Merianos John J.
Taylor Paul D.
ISP Investments Inc.
Katz Walter
Levy Neil
Maue Marilyn J.
Page Thurman K.
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