69087-47-4 Propanoic acid, 3-(1-(difluoro((trifluoroethenyl)oxy)methyl)-1,2,2,2-tetrafluoroethoxy)-2,2,3,3-tetrafluoro-, polymer with tetrafluoroethene Tetrafluoroethylene, tetrafluoro-3-(trifluoro-1-(trifluoromethyl)-2-((trifluorovinyl)oxy)ethoxy-) propionic acid polymer