Formation of polyimides by COOH and CN reactions
Formation of polyimides by COOH and CN reactions
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DOI：
10.1002/pol.1971.150090118
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发表时间：
1971
期刊：
影响因子：
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通讯作者：
P. Čefelín;J. Šebenda;O. Wichterle
中科院分区：
文献类型：
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作者：
P. Čefelín;J. Šebenda;O. Wichterle
本文研究了二元羧酸与二腈加成反应合成线型聚酰亚胺。研究了己二酸、辛二酸、间苯二乙酸和对苯二乙酸、间苯二甲酸和对氰基苯甲酸以及己二腈、间苯二乙腈和对苯二乙腈。在对苯二乙酸与对苯二乙腈的反应中获得了相当有利的结果，仅低分子量聚合物。聚酰亚胺的形成似乎受到反应物和产物的溶解度以及起始二羧酸和形成的酸的pK值的限制。
The synthesis of linear polyimides by the addition of dicarboxylic acids to dinitriles has been investigated. Adipic, suberic,m‐ andp‐phenylenediacetic, isophthalic, andp‐cyanobenzoic acids as well as adiponitrile,m‐ andp‐phenylenediacetonitrile, and isophthalonitrile were studied. Fairly favorable results, low molecular weight polymers only, were obtained in the reaction ofp‐phenylenediacetic acid withp‐phenylenediacetonitrile. The formation of polyimides seems to be restricted by the solubilities of the reactants and products as well as by the pKvalues of the starting dicarboxylic acid and of the acid which is formed.