| abstract |
A bioabsorbable polyurethane block copolymer with having hard and soft segments is formed by the reaction between a diisocyanate such as lysine ethyl ester diisocyanate and a mixture of (i) an aromatic amide or an amino acid derivative and (ii) a polyether glycol and/or an absorbable elastomeric polymer derived from the reaction between dialkylene glycol and a cyclic bioabsorbable monomer such as trimethylene carbonate, caprolactone, or dioxanone. |