Patent ID: 8734817

Claim:
A hyaluronic acid (HA) conjugate comprising the reaction product of a moiety derived from HA and a moiety derived from poly(ethylene glycol) (PEG); wherein the moiety derived from HA is a HA functionalized to bear a terminal amine group, a terminal anhydride group, or a terminal aldehyde group, wherein the moiety derived from PEG is a PEG functionalized to bear a terminal aldehyde group, a succinamide group, or a terminal amine group; wherein the resulting HA conjugate with PEG is end-capped with a species selected from the group consisting of fatty acid, fatty alcohol, poly(ester amide) that may optionally contain alkyl, amino acid, PEG or alcohol group, polycaprolactone, polylactide, polyglycolide, polyhydroxyalkanoate (PHA), polydioxanone (PDS), or PHA-PEG.