2015-05-042015-05-042002-03-12Peter, Susan J., Suggs, Laura J., Engel, Paul S. and Mikos, Antonios G., "Synthesis of poly(propylene fumarate) by acylation of propylene glycol in the presence of a proton scavenger." Patent US6355755B1. issued 2002-03-12. Retrieved from https://hdl.handle.net/1911/79845.https://hdl.handle.net/1911/79845High molecular weight linear poly(propylene fumarate) having a relatively low polydispersity index by utilizing a relatively pure intermediate and a method for making same. Fumaryl chloride and propylene glycol are reacted in the presence of potassium carbonate. The potassium carbonate present in the reaction solution prevents the acid by-product from catalyzing reactions at the fumarate double bond. The bis(propyl fumarate) produced according to this technique can be transesterified using conventional processing steps to yield P(PF). The P(PF) produced from bis(propyl fumarate) produced according to the present method has a higher molecular weight and is purer than P(PF) produced using previously known techniques.13 ppengUtility patentUS6355755B1