A fluorine-containing bisphenoxydiamine, 2,2-bis[4-(4-aminophenoxy)phenyl]hexafluoropropane (BAPF,P), was synthesized and characterized by means of Fourier transform infrared spectrometry (FTIR), NMR, and elemental analysis. The obtained BAPF,P was used as a chain extender to prepare polyurethane urea (PUU), whose morphology and properties were measured through FTIR, differential scanning calorimetry, thermogravimetric analysis, tensile measurements, and atomic force microscopy. The results show that the PUU elastomers based on BAPF,P exhibited good mechanical properties and thermal stability. (c) 2006 Wiley Periodicals, Inc.