Benzophenonetetracarboxylic dianhydride, 2,4-toluenediisocyanate, 4,4'-methylenediphenyldiisocyanate polyimide

1,3-Isobenzofurandione, 5,5'-carbonylbis-, polymer with 2,4-diisocyanato-1-methylbenzene and 1,1'-methylenebis [4-isocyanatobenzene]