The reaction in the melt of polyolefins containing 2-diethylsuccinate groups (DES) with poly-epsilon-caprolactam (PA6) to give a graft copolymer was investigated under different conditions. Even using a large excess of DES groups os-er the PA6 terminal amino groups the graft copolymer yield resulted only partial thus suggesting a kinetic control of tile reaction. The effect of various catalysts was then examined taking into account results obtained in a model reaction between a low molecular weight amine and diethylsuccinate. The results are discussed in terms oi side reactions and miscibility of the pristine polymers.