C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 1/08 (2006.01) A61K 9/20 (2006.01) A61K 9/70 (2006.01) A61K 47/30 (2006.01) A61L 15/22 (2006.01) A61L 15/44 (2006.01) A61L 26/00 (2006.01) C08L 71/02 (2006.01)
Patent
CA 2052855
1020-3 ABSTRACT There is provided a solid material useful in medicine, especially a film material for use as a wound dressing or as a drug delivery vehicle, which comprises a molecular mixture of (a) a compound which has film- forming properties, for example hydroxyethylcellulose, hydroxypropylmethylcellulose or polyvinyl alcohol, and (b) a polyoxyethylene-polyoxypropylene block copolymer or a tetrasubstituted derivative of ethylene-diamine in which the substituents are block copolymers of polyoxyethylene-polyoxypropylene, as a modifier. The molecular mixture may be formed, for example, by evaporating a solution of the two components (a) and (b) in a solvent, or by cooling a liquid composition comprising at least one of components (a) and (b) in molten form from an elevated temperature.
Gibson Mark
Payne Nicholas I.
Taylor Peter M.
American Cyanamid Company
Gibson Mark
Payne Nicholas I.
Shapiro Cohen
Taylor Peter M.
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