STUDY ON CHLORINATED POLYPHENYLQUINOXALINES AND COPOLYMERS OF PHENYLQUINOXALINES
聚氯代苯基喹噁啉和苯基喹噁啉共聚物的研究

This paper describes a new series of polyphenylquinozaline (PPQ). The starting material, para-bis(p-chlorophenylg!yoxaloyl)benzene(CPGB) was prepared via Grignard reaction. Chlorinated polyphenylquinoxaline was then obtained through cyclocondensa-tion reaction of 3, 3'-diaminotenzidine(DAB) and 3,3', 4,4'-tetramino-diphenyl ether (TAPE) with CPGB. They have higher T, than that of PPQ itself. Block and random copolymers of PPQ were prepared by the reaction of DAB and TAPE with 1,4-bis(phenylgloxaloyl) benzene (PGB) in m-cresol at room temperature. These poly-mers and copolymers exhibit higher thermoxidative stability, and excellent high-temperature resistance even in the presenceof water.