2015-05-042015-05-041997-07-01Suggs, Laura J., Payne, Richard G., Yaszemski, Michael J. and Mikos, Antonios G., "Method of making poly(propylene fumarate-coethylene oxide)." Patent US5644005A. issued 1997-07-01. Retrieved from https://hdl.handle.net/1911/79829.https://hdl.handle.net/1911/79829A biodegradable block copolymer made from the transesterfication of a poly(propylene fumarate) prepolymer and a poly(ethylene oxide) prepolymer. The block copolymer poly(propylene fumarate -co- ethylene oxide) is capable of crosslinking at body temperature. Crosslinking requires an appropriate crosslinking monomer and an initiator. The biodegradable block copolymer has utility as a vascular implant became it can be injected as a fluid into the vascular system and crosslinked in situ.6 ppengUtility patentUS5644005A