| abstract |
Provided is a novel diamine, which is capable of imparting not only excellent flexibility and transparency, but also a film having characteristics of so-called low retardation. A diamine characterized by the formula (1-1); a polyamidic acid and a polyimide obtained from the diamine; and a film for forming the film comprising the polyimide and silica particles Composition and thin film formed therefrom, (Wherein R 1 to R 5 each independently represent a halogen atom, an alkyl group, or an alkoxy group, and R 6 and R 7 each independently represent a hydrogen atom, a halogen atom, an alkyl group, or an alkoxy group, a, b, and d And e are each independently an integer of 0 to 4, and c is an integer of 0 to 2). |