Patent ID: 7005123

Claim:
A linear monofunctional or multifunctional poly-α-amino-acid derivative having at least glutamic or aspartic or serinic repeating units in the polymer backbone, the said glutamic or aspartic or serinic repeating units having the formula: —CO—CHR—NH— (I) wherein: R is defined as —(CH 2 ) n —CO—OR 1 or —(CH 2 ) n —CO—NHR 2 or CH 2 OH, n is 1 or 2, —R 1 is selected from hydrogen, C 1-20 alkyl, polyhaloC 1-6 alkyl, arylC 1-6 alkyl and heteroarylC 1-6 alkyl, and R 2 is C 1-6 alkyl substituted with at least one alcohol group, characterized in additionally having a functional group at one or both ends of the polymer backbone, the said functional end group(s) being selected from the group consisting of functionalized amines, N-acyl, ester, carbonate, thiol, thiol precursor, thioisocyanate, thiocarbonate, urea, thiourea, aldehyde, acetal, N-carboxyanhydride, oxycarbonyl, maleimide and any vinyl group suitable for radical, anionic or cationic polymerization.