Wholly Aromatic Polyimides Containing Pendent Amino and Cyano Groups

• Published in: Macromolecules Vol. 31; no. 17; pp. 5920 - 5923
• Main Authors: Chung, Im Sik, Kim, Sang Youl
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 25.08.1998
• Subjects: Applied sciences; Exact sciences and technology; Organic polymers; Physicochemistry of polymers; Polymers with particular properties; Preparation, kinetics, thermodynamics, mechanism and catalysts; Polyimide; Ketoimide polymer; Aromatic polymer; Mechanical properties; Experimental study; Polyaddition; Functional polymer; Pyrazole derivative polymer; Thermal stability; Thermal properties; Pyromellitimide polymer; Preparation; Thermal expansion coefficient; Thermostable; Aminonitrile; Etherimide polymer
• ISSN: 0024-9297; 1520-5835
• DOI: 10.1021/ma980360v

Thermally stable organic polymers have been the subject of numerous studies in order to extend the application of organic materials in harsh conditions. Of thermally stable organic polymers, the outstanding properties of aromatic polyimides such as excellent thermooxidative stability and superior chemical resistance led to the use of polyimides in many applications. Previously, polypyrazoles with amino and cyano groups were synthesized from monomers containing the 1-chloro-2,2-dicyanovinyl moiety and dihydrazines by vinylic nucleophilic substitution reaction, and we reported the preparation of polyamides containing substituted pyrazole rings which show good solubility and a high glass transition temperature. In this paper, we report the synthesis and characterization of new wholly aromatic polyimides which have a rigid but kink-catenated pyrazole ring with amino and cyano functional groups.