Accession Number : AD0708806

Title :   POLYQUINOXALINES CONTAINING p-PHENYLENE ETHER AND p-PHENYLENE MOIETIES,

Corporate Author : BOEING SCIENTIFIC RESEARCH LABS SEATTLE WASH

Personal Author(s) : Hergenrother,P. M. ; Kiyohara,D. E.

Report Date : APR 1970

Pagination or Media Count : 23

Abstract : A series of quinoxaline polymers containing p-phenylene ether and p-phenylene moieties were prepared by polymerization of 3,3-diaminobenzidine with various aromatic bisglyoxals in m-cresol. The glass transition temperature (Tg) of the polyquinoxalines varied from 133C for a polymer highest in p-phenylene ether content to 350C for a polymer containing rigid p-phenylene moieties. Although thermalgravimetric analysis failed to show any distinct difference between the p-phenylene ether and the p-phenylene polymers, isothermal weight loss study at 400C in air showed that the p-phenylene polymers lost less weight after a given time than the p-phenylene ether polymers. Prior to polymer work, a series of quinoxaline model compounds were prepared to aid in polymer characterization. (Author)

Descriptors :   (*POLYMERS, SYNTHESIS(CHEMISTRY)), NITROGEN HETEROCYCLIC COMPOUNDS, POLYMERIZATION, THERMOGRAVIMETRIC ANALYSIS

Subject Categories : Polymer Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE