A new kind of asymmetrical ether diamine,3,4＇-bis（4-aminophenoxy）benzophenone（BABP）,was synthesized from the nucleophilic substitution reaction of 4-chloronitrobenzene and 3,4＇-dihydroxybenzophenone in the prese...A new kind of asymmetrical ether diamine,3,4＇-bis（4-aminophenoxy）benzophenone（BABP）,was synthesized from the nucleophilic substitution reaction of 4-chloronitrobenzene and 3,4＇-dihydroxybenzophenone in the presence of potassium carbonate,followed by catalytic reduction with SnCl_2-6H_2O and concentrated hydrochloric acid.The prepared diamine was employed in the preparation of a novel polyimide containing asymmetrical diaryl ether segments via the polycondensation of it with BTDA by a two-step method.The resulting polyimide exhibits excellent solubility,film-forming capability and high thermal resistance.展开更多
基金the financial support from the Natural Science Foundation of Gansu Province(No. 096RJZA047)the Fundamental Research Funds for the Central Universities(No.lzujbky-2011-24)
文摘A new kind of asymmetrical ether diamine,3,4＇-bis（4-aminophenoxy）benzophenone（BABP）,was synthesized from the nucleophilic substitution reaction of 4-chloronitrobenzene and 3,4＇-dihydroxybenzophenone in the presence of potassium carbonate,followed by catalytic reduction with SnCl_2-6H_2O and concentrated hydrochloric acid.The prepared diamine was employed in the preparation of a novel polyimide containing asymmetrical diaryl ether segments via the polycondensation of it with BTDA by a two-step method.The resulting polyimide exhibits excellent solubility,film-forming capability and high thermal resistance.
