A - Human Necessities – 61 – K
Patent
A - Human Necessities
61
K
A61K 31/60 (2006.01) A61K 9/70 (2006.01) A61K 47/30 (2006.01) A61K 47/44 (2006.01) A61L 26/00 (2006.01) A61P 17/12 (2006.01) A61P 23/00 (2006.01)
Patent
CA 2438768
Film-forming flexible collodion compositions can be improved by including one or more topically acceptable polymers in an amount sufficient to increase the resilience of the film formed. Suitable polymers include polyalkylenes and (meth)acrylate homo- or copolymers. Preferred embodiments include isobutene-butene copolymer and/or polymethyl methacrylate. The compositions can further include salicylic acid and a topically acceptable crystallization inhibitor in an amount sufficient to suppress the crystallization of dissolved salicylic acid from the composition. Suitable crystallization inhibitors include at least one mono- or polyester and/or ether. Preferred embodiments include a mixture of ethyl lactate and castor oil, and ethyl lactate alone. The compositions preferably also contain a local anesthetic.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Stiefel Laboratories Inc.
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