Preparation of nylon 6T from polyester by polymeric amidation reaction with a catalyst

A semi aromatic polyamide, nylon 6T, was prepared by a polymeric amidation reaction of polyethyleneterephthalate(PET)with hexamethylene diamine in sulfone and in the process a catalyst was used to precipitate the reaction rate. According to characterization of the amount of the product, substitution ratio of ester for amide groups and the intrinsic viscosity of nylon 6T product, the optimal reaction temperature and the catalyst dosage were determined. Furthermore, the function of the catalyst accelerating the polymeric amidation reaction was discussed