Depolymerization and recovery of electrical components. Since the cost of electrical components is usually higher than that of the polymer substrate, recapturing these components under mild and benign conditions to permit reuse is attractive. We hypothesize that mild depolymerization reaction conditions could promote transesterification reactions that target the ester groups in the poly(ester imide) network. Inspired by Cho et al. and our previous work, we stimulate the transesterification reaction with methanol using potassium carbonate (K 2 CO 3 ) as the catalyst. Unfortunately, at relevant disc dimension (e.g. 10mm diameter by 2 mm thick) the depolymerization, although successful, can take over a week to complete due to the limited diffusion of methanol into the glassy polymer network. To improve mass transport, we include 50% by volume of dichloromethane (DCM) into the methanol solution which drastically increases the rate of depolymerization. Complete disappearance of the network polymer occurs within 24 hours at ambient conditions for all five polymers with the same sample dimensions.