Pyromellitic dianhydride → 1H,3H-Benzo(1,2-c:4,5-c')difuran-1,3,5,7-tetrone--4,4'-oxydianiline (1/1)

Participants

Reaction Steps

PMDA/4,4'-ODA resin was prepared by reacting 16.019 g (0.080 moles) of 4,4'-ODA with 17.450 g (0.080 moles) of PMDA In 189.7 g DMAc. To 10.004 g of this resin was added 0.521 g Agtfa in 1.996 g DMAc. The mixture was stirred vigorously with a metal spatula and cast 0.018" thick on a glass plate. The silver ion-containing polyamic acid film was thermally converted to the corresponding surface conducting polyimide by heating for 1 hour each at 100°, 200°, and 300° C. and postcuring 2 hours at 300° C. The resulting flexible, reflective film had a conductivity of 1.7×10-3- -6.2×10-3 Ω-1 by four point probe.

Provenance & Evidence