Method of preparing a melt-processable polyamide compositions

摘要

By contacting it with anionic polymerization catalyst caprolactam monomer to polymerizing monomers, to contacting with the protic compound polylactam and obtained, the invention is directed to a method of preparing a melt-processable polylactam. Anionic polymerization catalyst is selected from the group consisting of alkaline earth metal Rakutamato forming compounds and alkaline earth metal Rakutamato, protic compound is greater than 14 pKa. Polylactam obtained having a cyclic dimer content and a very low melt stability good.