Radiopaque polyurethane resin compositions
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United States of America Patent
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-
Aug 11, 1981
Issued Date -
N/A
app pub date -
Dec 28, 1979
filing date -
May 18, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Radiopaque compositions are provided by formulating polyurethane resins, alone, or combined with vinyl resins, with alkyl or alkoxyalkyl 2,5-diiodobenzoates, 2,3,4,6-tetraiodobenzoates or mixtures thereof. The compositions are useful in the manufacture of X-ray opaque medical devices, particularly medical surgical tubing. Surgical tubing with excellent plastic memory is provided, well adapted to forming flares and curved tips necessary for selective renal and celial arteriography. Multi-wall and co-tapered multiwall tubing constructions are also disclosed.
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