Effective depolymerization waste FRPs by treatment with DMAP and supercritical alcohol

Waste FRP, fiber-reinforced plastic, was readily depolymerised by treatment with supercritical MeOH in the presence of catalytic amounts of DMAP and the decomposed mixture was separated into three portions, monomeric portion, polymeric portion, and inorganic residue, by simple manipulation; the recovered organic and inorganic materials were readily used for further recycling use.