High temperature polymers. I.—Sulfone ether diamines as intermediates for tractable high temperature polymers

A useful synthesis of a series of new aromatic sulfone ether diamines, H₂NC₆H₄Odocumentclass{article}pagestyle{empty}begin{document}$hbox{---}hskip-5pt[ {rm C}_{rm 2} {rm H}_{rm 4} {rm SO}_{rm 2} {rm C}_{rm 6} {rm H}_{rm 4} hbox{--} {rm ORO}hbox{---}hskip-5pt ]_n {rm OC}_{rm 6} {rm H}_{rm 4} {rm SO}_{rm 2} {rm C}_{rm 6} {rm H}_{rm 4} hbox{---} {rm OC}_{rm 6} {rm H}_{rm 4} {rm NH}_{rm 2} $end{document}, where n = 0, 1, 2…, which increases the tractability of polyimides, polyamide-imides, and polyamides, was developed. These diamines were prepared by condensing various proportions of sodium p-aminophenate, sodium bisphenates, and dichlorodiphenyl sulfone. The synthetic procedures are now refined to the point where simply coagulating these diamines into water yields high purity polymer-grade sulfone ether diamines. The latter have good tractability; and in some cases, it is possible to extrude and injection-mold these high temperature polymers.