专利名称：Method of manufacturing polyamides发明人：Heike Faulhammer,Patrick Dang,Bernard
Jacques,Michael Werth
申请号：US09158577申请日：19980922公开号：US06228976B1公开日：20010508
摘要：The invention relates to a method of preparing polyamides, in which, in a firststep, the anionic polymerization of at least one lactam is carried out and then, in a secondstep, a heat treatment is carried out on the polymer obtained, which has a distribution ofthe molar masses measured by SEC having a shape close to a Gaussian curve with a high-mass tail, at a high enough temperature and for a long enough time so as to obtain aunimodal distribution of the molar masses.
申请人：ELF ATOCHEM S.A.
代理机构：Smith, Gambrell & Russell, LLP
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