Abstract

Preparation des polyimides [Ar'-N(CO) 2 Ar(CO) 2 N] n (Ar'=Ph-O-Ph, PhCH 2 Ph, Ph, Ar=Ph, PhCOPh, Ph-Ph) par polyaddition de dianhydrides aux N,N'-bis [trimethylsilyl] diamines correspondantes, suivie de l'imidation thermique des films d'esters silyles des poly(amidoacide)s. Determination des constantes de vitesse et des parametres d'activation de l'imidation. Les films de polyimides obtenus sont transparents et durs et commencent a se decomposer vers 520°C

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