Also Called: Poly(difluoromethylene), α-fluoro-ω-[2-(phosphonooxy)ethyl]-, diammonium salt;Poly(difluoromethylene), .alpha.-fluoro-.omega.-[2-(phosphonooxy)ethyl]-, ammonium salt (1:2);Poly(difluoromethylene), _-fluoro-_-[2-(phosphonooxy)ethyl]-, diammonium salt;Poly(difluoromethylene), .alpha.-fluoro-.omega.-[2-(phosphonooxy)ethyl]-, diammonium salt;Poly(difluoromethylene), α-fluoro-ω-[2-(phosphonooxy)ethyl]-, ammonium salt (1:2);Poly(difluoromethylene), a-fluoro-ω-[2-(phosphonooxy)ethyl]-, diammonium salt;.alpha.-Fluoro-.omega.-[2-(phosphonooxy)ethyl]poly (difluoromethylene), diammonium salt;α-Fluoro-ω-[2-(phosphonooxy)ethyl]poly (difluoromethylene), diammonium salt;α-氟-ω-[2-(膦酰氧基)乙基]-聚(二氟亚甲基)二铵盐