Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1979-05-18
1981-02-10
Wong, Jr., Harry
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 314R, C08K 509, C08K 510
Patent
active
042500729
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 contructions are also disclosed.
REFERENCES:
patent: 3356650 (1967-12-01), McElroy
patent: 3361700 (1968-01-01), Archer et al.
patent: 3489723 (1970-01-01), Kraft
patent: 3645955 (1972-02-01), Flynn
patent: 3752617 (1973-08-01), Burlis et al.
Encyclopedia of Polymer Science & Technology, vol. 11, pp. 506-563, N.Y. Interscience (Publ. (1969).
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