FEATURES OF THE PREPARATION AND CHARACTERIZATION OF ADAMANTANE-CONTAINING FATTY AROMATIC AMINES AS POTENTIAL MONOMERS FOR OPTIALLY TRANSPARENT POLYMERS

A series of fatty aromatic adamantane-containing diamines based on acetylated aniline derivatives have been obtained using trifluoroacetic acid, which allows the target products to be obtained selectively with yields of up to 93 % and purities of up to 97,5 % without pretreatment. The pKa values and the charges on the nitrogen atom of the resulting diamines are determined. The synthesized compounds are potential monomers for transparent polyimide materials.