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公开(公告)号:US06566486B1
公开(公告)日:2003-05-20
申请号:US09868835
申请日:2001-06-20
申请人: Detlev Joachimi , Hans-Jürgen Dietrich , Heinrich Morhenn , Cliff Scherer , Andreas Gittinger , Friedrich-Karl Bruder
发明人: Detlev Joachimi , Hans-Jürgen Dietrich , Heinrich Morhenn , Cliff Scherer , Andreas Gittinger , Friedrich-Karl Bruder
IPC分类号: C08G6908
CPC分类号: C08G69/36
摘要: A process for the production of polyamides is disclosed. In a first reaction step, suitable monomers such as caprolactam or an aliphatic aminocarboxylic acid are reacted with polyfunctional amines, which contain at least one secondary amino group, and/or with salts containing such amines and dicarboxylic acids. The reaction product is in a further process step undergoes solid phase post-condensation.
摘要翻译: 公开了一种生产聚酰胺的方法。 在第一反应步骤中,合适的单体如己内酰胺或脂族氨基羧酸与含有至少一个仲氨基的多官能胺和/或与含有这些胺和二羧酸的盐反应。 反应产物处于进一步的工艺步骤中进行固相后冷凝。
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公开(公告)号:US06515044B1
公开(公告)日:2003-02-04
申请号:US09786712
申请日:2001-04-09
IPC分类号: C08J322
CPC分类号: C08J3/226 , C08J2367/02 , C08J2467/00 , C08K5/353 , C08L67/02
摘要: The present invention relates to a process for the preparation of high-viscosity polyesters with a reduced content of acid end groups, wherein a masterbatch of low-viscosity polyesters and oxazolines is prepared, this is then mixed with a higher-viscosity polyester and this mixture (dry blend) is further processed.
摘要翻译: 本发明涉及制备具有降低的酸端基含量的高粘度聚酯的方法,其中制备低粘度聚酯和恶唑啉的母料,然后将其与较高粘度的聚酯混合,并将该混合物 (干混合物)进一步处理。
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