Promotion of epsilon-caprolactam polymerization.

摘要

A process for polymerizing ε-caprolactam to form a nylon-6 polymer in which a reactant stream containing e-caprolactam and a lactam polymerization initiator is brought into polymerizing admixture with a reactant stream containing ε-caprolactam and a lactam magnesium halide, wherein sufficient 2-oxo-1-pyrrolidinyl compound is added to the admixture either as 2-pyrrolidinone, 2-oxo-pyrrolldinyl magnesium halide or 2-oxo-1-pyrrolidinyl capped initiator compound to enhance the rate of polymerization of the ε-caprolactam.