NEW POLYURETHANE ELASTOMERS DERIVED FROM AMINO-ACIDS

Synthesis and characterization of new polyurethane elastomers with rig id blocks derived from aminoacids have been achieved by polycondensati on using poly(tetramethylene oxide) (PTMO) as a soft segment. Aminotel echelic oligopeptides or pseudopeptides were used in the hard block, e ventually in association with lysine diisocyanate (ethyl 2,6-diisocyan atohexanoate, LDI). Physicochemical characteristics of the so obtained materials, especially good filmmaking properties, allow their use as biomaterials of reduced toxicity.