FLAME RETARDANT GROUP-CONTAINING POLYMER, SEPARATOR OF NON-AQUEOUS ELECTROLYTE BATTERY COMPRISING THE SAME, AND NON-AQUEOUS ELECTROLYTE BATTERY

A flame retardant group-containing polymer, a separator of a non-aqueous electrolyte battery comprising the flame retardant group-containing polymer, and a non-aqueous electrolyte battery. The flame retardant group-containing polymer includes a first repeating unit, a second repeating unit, and a third repeating unit.