Orthopedic bandage having improved catalyst system

Details Orthopedic bandage having improved catalyst system Orthopedic bandage having improved catalyst system

A - Human Necessities

61

F

128/40

A61F 13/00 (2006.01) A61L 15/12 (2006.01)

Patent

CA 1132419

ABSTRACT OF THE DISCLOSURE The instant invention relates to an orthopedic bandage which hardens by means of a free radical catalyzed polymerization reaction, wherein said reaction is initiated by an improved redox catalyst system, and an improved method for forming a cast from said orthopedic bandage. The bandage comprises a flexible carrier having a cast forming composition comprising a monomer (polymerizable by means of said improved redox catalyst system) supported thereon, which monomer may be a solid, water soluble vinyl monomer such as diacetone acrylamide (DAA), N isopropylacrylamide (N-IPA) or mixtures thereof. The improved catalyst system includes a copper salt in combination with a reducing agent such as ferrous sulfate, sodium sulfite, oxalic acid and the like. The preferred copper salt is cupric acetylacetonate.

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