发明授权
US4327208A Continuous process for the hydrolytic production of polycaprolactam having a low-monomer and low-dimer content 失效
用于水解生产具有低单体和低二聚体含量的聚己内酰胺的连续方法

Continuous process for the hydrolytic production of polycaprolactam
having a low-monomer and low-dimer content
摘要:
A process for the production of polyamide-6 or corresponding copolyamides by hydrolytic polymerization wherein the low molecular weight secondary reaction products and the unreacted .epsilon.-caprolactam are separated off from the polyamide melt and directly condensed on the .epsilon.-caprolactam melt to be polymerized.
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