摘要
用热分析方法得出,由芳香酸甲酯或乙酯与4,4’-二氨基二苯甲烷制备的铵盐的酰胺化,酰亚胺化反应,较芳香酸的铵盐更易进行,反应温度和表观活化能均比四酸铵盐时低。由铵盐生成的聚酰亚胺具有很好的热氧化稳定性。
The amidation and imidization processes of some aromatic tetracarboxylic esters with4,4' -diaminodiphenyl methane have been studied by thermal analysis. The reaction tempera-tures and apparent activation energies for both reactions were found to be lower than thosefor the corresponding free acids with diamine used. Polyimides obtained from ammoniumsalts showed good thermal stability.
出处
《应用化学》
CAS
CSCD
北大核心
1991年第4期30-33,共4页
Chinese Journal of Applied Chemistry
关键词
甲酯
乙酯
铵盐
酰胺化
酰亚胺化
benzene tetracarboxylic ester
diphenyl sulfide tetracarboxylic ester
hiphenyl tetracarboxylic ester
diphenyl ketone tetracarboxylic ester,methyl ester
ethyl ester
ammonium salt
amidation
imidization
thermal analysis
