英文名称:1,2-Benzenedicarboxylic acid, 4,4-carbonylbis-, polymer with 4-methyl-1,3-benzenediamine and 4,4-methylenebis(benzenamine); 1,2-Benzenedicarboxylic acid, 4,4’-carbonylbis-, polymer with 4-methyl-1,3-benzenediamine and 4,4’-methylenebis[benzenamine]