The present invention relates to methods for recycling reinforced composites. The reinforced composite comprises a reinforcement material in a cross-linked polymer matrix, wherein the cross-linked polymer comprises a cross-linking group derived from a curing agent represented by formula I, wherein R1 is hydrogen, alkyl, cylcoalkyl, heterocycloalkyl, alkenyl, cycloalkenyl, aryl, heteroaryl, alkoxy alkyl or alkynyl; A is alkyl, alkenyl, alkenene, alkylene-hetero-alkylene, alkylene-heterocyclo-alkylene, alkylene, alkylene-oxy-alkylene, 1,4-alkyl substituted piperazine, carbonyl, thiocarbonyl; B is alkyl, alkenyl, alkenene, alkylene-hetero-alkylene, alkylene-heterocyclo-alkylene, alkylene, alkylene-oxy-alkylene, 1,4-alkyl substituted piperazine, carbonyl, thiocarbonyl; R2 is hydrogen, alkyl, aminoalkyl, alkyl-amino-alkyl, cylcoalkyl, heterocycloalkyl, alkenyl, aryl, or heteroaryl; and R3 is hydrogen, alkyl, aminoalkyl, alkyl-amino-alkyl, cylcoalkyl, heterocycloalkyl, alkenyl, aryl, or heteroaryl.