Radiopaque polyurethanes

Details Radiopaque polyurethanes Radiopaque polyurethanes

C - Chemistry, Metallurgy

08

G

C08G 18/38 (2006.01) A61L 29/00 (2006.01) A61L 29/06 (2006.01) A61L 31/00 (2006.01) C08G 18/66 (2006.01) C08G 18/75 (2006.01)

Patent

CA 2111155

RADIOPAQUE POLYURETHANES ABSTRACT OF THE DISCLOSURE This invention relates to radiopaque polyurethane compositions that are reaction products of (a) cycloaliphatic diisocyanates; (b) at least one polyester, polycarbonate, and/or polyester carbonate diol having a molecular weight of from about 1000 to about 6000; (c) an isocyanate-reactive bromine-containing aromatic chain extender; and (d) optionally, a catalyst; wherein the quantity of component (c) is such that the amount of bromine in the polyurethane composition is from 10 to 35% by weight, and wherein the components are reacted at an isocyanate index of from 0.95 to 1.2.

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