NYLON 6 OR COPOLYMER THEREOF, AND PROCESS FOR PREPARATION THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a nylon 6 or a copolymer thereof which is excellent in light resistance and viscosity stability and also can be deep color-dyed, and to provide a process for preparation thereof. SOLUTION: The nylon 6 or the copolymer thereof is a polymer in which at least one kind of a piperidine-based compound is chemically bonded to the polymer chain or at the polymer end.