AMIDATION AND IMIDIZATION OF AMMONIUM SALTS OF SOME AROMATIC TETRACARBOXYLIC ESTERS

Chinese Journal of Applied Chemistry ›› 1991, Vol. 0 ›› Issue (4): 30-33.

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AMIDATION AND IMIDIZATION OF AMMONIUM SALTS OF SOME AROMATIC TETRACARBOXYLIC ESTERS

Liu Zhenhai Zhang Jichang¹

Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022

Received:1990-05-04 Revised:1990-09-22 Published:1991-08-10 Online:1991-08-10

Abstract

Abstract: The amidation and imidization processes of some aromatic tetracarboxylic esters with 4,4'-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.

Key words: benzene tetracarboxylic ester, diphenyl sulfide tetracarboxylic ester, hiphenyl tetracarboxylic ester, diphenyl ketone tetracarboxylic ester,methyl ester, ethyl ester, ammonium salt, amidation, imidization, thermal analysis

Liu Zhenhai Zhang Jichang. AMIDATION AND IMIDIZATION OF AMMONIUM SALTS OF SOME AROMATIC TETRACARBOXYLIC ESTERS[J]. Chinese Journal of Applied Chemistry, 1991, 0(4): 30-33.

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AMIDATION AND IMIDIZATION OF AMMONIUM SALTS OF SOME AROMATIC TETRACARBOXYLIC ESTERS

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