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公开(公告)号：US06737499B2
公开(公告)日：2004-05-18
申请号：US10146370
申请日：2002-05-15
IPC分类号： C08G6916
摘要： A process for using low-molecular weight compounds that are water-extracted from (co)polyamides in the production of polyamide is disclosed. The process entails reacting these compounds with 10 to 15 wt. % water for a period of 3.5 to 6 hours at a temperature of 220° C. to 270° C., and polymerizing the resulting product along with caprolactam.
摘要翻译： 公开了一种在聚酰胺生产中使用从（共）聚酰胺水提取的低分子量化合物的方法。 该方法需要使这些化合物与10至15wt。 ％水，温度为220〜270℃，时间为3.5〜6小时，并与己内酰胺一起聚合得到的产物。
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公开(公告)号：US06710159B2
公开(公告)日：2004-03-23
申请号：US10239982
申请日：2002-09-26
申请人： Heinrich Morhenn , Dieter Göbbels , Cliff Scherer , Frank Weyrich , Konrad Triebeneck , Klemens Kohlgrüber
发明人： Heinrich Morhenn , Dieter Göbbels , Cliff Scherer , Frank Weyrich , Konrad Triebeneck , Klemens Kohlgrüber
IPC分类号： C08G6908
摘要： A process for producing a polyamide or copolyamide freed from volatile constituents by removing the volatile constituents, in particular the monomers and dimers, in at least two stages from the polymer melt by using an, in particular, gaseous entrainer is described. The invention also relates to polyamide compositions made of polyamide 6 or a copolyamide with a reduced volatile constituent content, as well as moulding compositions made of the above-mentioned polyamides, and moulded articles and fibers which are produced from these moulding compositions.
摘要翻译： 描述了通过使用特别是气体夹带剂从聚合物熔体至少两个阶段除去挥发性成分，特别是单体和二聚体，从而形成不含挥发性成分的聚酰胺或共聚酰胺的方法。 本发明还涉及由聚酰胺6或具有降低的挥发性组分含量的共聚酰胺制成的聚酰胺组合物以及由上述聚酰胺制成的模塑组合物，以及由这些模塑组合物制备的模塑制品和纤维。
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公开(公告)号：US06986816B2
公开(公告)日：2006-01-17
申请号：US10484179
申请日：2002-07-08
申请人： Claus-Peter Reisinger , Sven Michael Hansen , Peter Fischer , Konrad Triebeneck , Joachim Helbig
发明人： Claus-Peter Reisinger , Sven Michael Hansen , Peter Fischer , Konrad Triebeneck , Joachim Helbig
IPC分类号： B08B7/00
CPC分类号： B08B9/057 , B01J19/002 , B01J2219/00247 , B08B9/08
摘要： The invention relates to a process for the removal of deposits formed in a reaction apparatus by the precipitation of solids from a liquid reaction mixture, which process is characterized in that particles of a material that is inert under the reaction conditions are introduced into the reaction apparatus, which particles, by suitable mechanical circulation of the reaction mixture, are so moved through the reactor that, during the reaction, by striking the walls or other built-in elements, they abrasively remove precipitates adhered thereto.
摘要翻译： 本发明涉及一种通过从液体反应混合物中沉淀固体而去除在反应装置中形成的沉积物的方法，该方法的特征在于在反应条件下将惰性物质的颗粒引入反应装置 通过反应混合物的适当的机械循环将颗粒移动通过反应器，在反应过程中，通过撞击壁或其它内置元件，它们可以磨蚀地去除附着在其上的沉淀物。
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公开(公告)号：US06699962B2
公开(公告)日：2004-03-02
申请号：US10146320
申请日：2002-05-15
IPC分类号： C08F600
摘要： A process for removing low molecular weight constituents from polyamide 6 or from copolyamides based on caprolactam (herein (co)polyamide) is disclosed. The process comprise subjecting the (co)polyamide to liquid-extraction at a temperature which is above the boiling point of the liquid at atmospheric pressure said liquid containing water in an amount of at least 80 percent relative to its weight.
摘要翻译： 公开了一种从聚酰胺6或基于己内酰胺（这里（共）聚酰胺）的共聚酰胺除去低分子量成分的方法。 该方法包括使（共）聚酰胺在大气压下在高于液体沸点的温度下进行液体萃取，所述液体含水量相对于其重量至少为80％。
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