Description  Claims  Cited references 

WO2010149962A   [0011] 
US20100145001A   [0012] 
US20110283908A   [0013] 
US2005025530A   [0018] 
US20140037711A   [0018] 
US2015031949W   [0087]  [0140] 

Biodegradable Hyperbranched Amphiphilic Polyurethane Multiblock Copolymers Consisting of Poly(propylene glycol), Poly(ethylene glycol), and Polycaprolactone as in Situ Thermogels,   [0014] 
One-Step Syntheses of Photocurable Polyesters   [0015] 
Influence of PEG Endgroup and Molecular Weight on Its Reactivity for Lipase-Catalyzed Polyester Synthesis   [0016] 
Synthesis of Biocompatible Segmented Polyurethanes from Aliphatic Diisocyanates and Diurea Diol Chain Extenders   [0017]