Thermoplastic polyurethane article treated with iodine for antibacterial use
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United States of America Patent
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-
Apr 26, 1983
Grant Date -
N/A
app pub date -
Nov 3, 1980
filing date -
Nov 3, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
There is provided a polymeric bacteriocidal composition comprising a thermoplastic, partially cross-linked polyurethane having --NH--(C.dbd.O)--O-- urethane linkages and/or urea linkages --NH--(C.dbd.O)--NH-- and iodine complexed with a sufficient number of these linkages to provide bacteriocidal properties to said composition. The polyurethane has an average molecular weight between 35,000 and 50,000, an ultimate elongation of 200 to 800% and a Shore A scale hardness of 60 to 95. The composition is shaped into a conventional medical appliance form, e.g. a catheter.
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