Patent ID: 7572929

Claim:
A dithiocarbonate-containing macromer having the formula: wherein n is an integer greater than or equal to two; R 1 is selected from the group consisting of an alpha-, omega-diol containing from C-2 to C-22 carbon atoms; an alpha-, omega-diol containing ether linkages; and a polyol; and R 2 is a biodegradable or water-soluble linkage selected from the group consisting of an ester, an amide, a carbonate, an ester-amide, an orthoester, an anhydride, an imine, a phosphazene, a poly(peptide), a poly(hydroxy acid), a poly(orthocarbonate), a poly(anhydride), a poly(lactone), a poly(aminoacid), a poly(carbonate), poly(phosphonate), a poly(oxaester), a poly(alkylene diglycolate), a fatty acid polyester, a poly(ester-amide), a polydepsipeptide, a poly(orthoester), poly(phosphazene), poly(ethylene glycol), poly(ethylene oxide), poly(vinyl alcohol), poly(ethylene-co-vinyl alcohol), poly(acrylic acid), poly(ethylene-co-acrylic acid), poly(ethyloxazoline), polyvinylpyrrolidone, poly(ethylene-co-vinyl pyrrolidone), poly(maleic acid), poly(ethylene-co-maleic acid), poly(acrylamide), poly(ethylenimine), poly(ethylene oxide)-co-poly(propylene oxide) block copolymers, and combinations thereof; and R 3 is selected from the group consisting of hydrogen, methyl, ethyl, and propyl.