Patent ID: 7230068

Claim:
A water-soluble compound comprising a polymer containing at least one terminal azide moiety and at least one terminal non-azide moiety selected from the group consisting of hydroxyl, protected hydroxyl, alkoxyl, active ester, active carbonate, acetal, aldehyde, aldehyde hydrates, alkenyl, acrylate, methacrylate, acrylamide, active sulfone, amine, aminooxy, protected amine, hydrazide, protected hydrazide, protected thiol, protected carboxylic acid, isocyanate, isothiocyanate, maleimide, vinylsulfone, dithiopyridine, vinylpyridine, iodoacetamide, epoxide, glyoxals, diones, mesylates, tosylates, tresylate, alkene, and ketone, wherein said polymer is selected from the group consisting of poly(alkylene oxides) and poly(oxyethylated polyols), wherein said compound has a molecular weight selected from the group consisting of between about 6000 and about 80,000, between about 6,000 and 20,000, between about 80,000 and about 100,000, about 6,000, about 20,000, about 80,000, and about 100,000.