118455-18-8 55478-71-2 74967-09-2 Benzamide, 2-amino-5-(4-aminophenoxy)-, polymer with 1H,3H-benzo(1,2-c:4,5-c')difuran-1,3,5,7-tetrone, 5,5'-carbonylbis(1,3-isobenzofurandione) and 4,4'-oxybis(benzenamine)