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公开(公告)号：US08080630B2
公开(公告)日：2011-12-20
申请号：US10545968
申请日：2004-02-11
申请人： Albert A Van Geenen , Cornelia E. M. Bronsaer , Yvonne H Frentzen , Stanislaus M. P. Mutsers , Nicolaas J. M. L. Janssen
发明人： Albert A Van Geenen , Cornelia E. M. Bronsaer , Yvonne H Frentzen , Stanislaus M. P. Mutsers , Nicolaas J. M. L. Janssen
IPC分类号： C08G69/20
摘要： The invention relates to a process for preparing a melt-processable polylactam by contacting caprolactam monomer with an anionic polymerization catalyst, polymerizing said monomer and contacting the resulting polylactam with a protic compound. The anionic polymerization catalyst is chosen from the group consisting of alkali-earth-metal-lactamates and alkali-earth-metal-lactamate forming compounds and the protic compound has a pKa larger than 14. The resulting polylactam has a good melt-stability and very low cyclic dimer content.
摘要翻译： 本发明涉及通过使己内酰胺单体与阴离子聚合催化剂接触来制备可熔融加工的聚内酰胺的方法，使所述单体聚合并使得到的聚内酰胺与质子化合物接触。 阴离子聚合催化剂选自碱土金属 - 内酰胺酸盐和碱土金属 - 乳酸氨基甲酸酯形成化合物，质子化合物的pKa大于14.所得聚内酰胺具有良好的熔融稳定性 低环状二聚体含量。
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公开(公告)号：US5840773A
公开(公告)日：1998-11-24
申请号：US701612
申请日：1996-08-22
CPC分类号： C08J11/08 , C08J2377/00 , Y02W30/701
摘要： The present invention relates to a process for treating polyamide-containing carpet waste by extracting the polyamide from the carpet waste with an extraction agent containing an aliphatic alcohol. The separated polyamide can then be recovered from the extract and recycled for further use. In addition, carpet waste containing two polyamides can be treated in accordance with the present invention so as to separately recover each polyamide. The process according to the present invention provides a high yield of the polyamide. The presence of other constituents normally present in carpets does not interfere with the separating and recycling of the polyamide.
摘要翻译： 本发明涉及一种用含有脂肪醇的提取剂从地毯废物中提取聚酰胺来处理含有聚酰胺的地毯废物的方法。 然后可以从提取物中回收分离的聚酰胺并再循环用于进一步的使用。 此外，可以根据本发明处理含有两种聚酰胺的地毯废物，以便分别回收每种聚酰胺。 根据本发明的方法提供了高产率的聚酰胺。 通常存在于地毯中的其它成分的存在不会妨碍聚酰胺的分离和再循环。
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公开(公告)号：US5556890A
公开(公告)日：1996-09-17
申请号：US253010
申请日：1994-06-02
IPC分类号： C07D201/12 , C07D201/16 , C08J11/14
CPC分类号： C07D201/12 , C07D201/16
摘要： The present invention is for a method of preparing purified .epsilon.-caprolactam from carpet waste containing nylon-6. Contaminated .epsilon.-caprolactam is obtained by depolymerizing nylon-6 from carpet waste. A mixture of the contaminated .epsilon.-caprolactam and water is then hydrogenated in the presence of hydrogen and a hydrogenation catalyst in order to produce purified .epsilon.-caprolactam. The amount of contaminated .epsilon.-caprolactam in the mixture can be between 10 and 95% by weight.
摘要翻译： 本发明涉及从含有尼龙-6的地毯废物中制备纯化的ε-己内酰胺的方法。 通过从地毯废物中解聚尼龙-6得到受污染的ε-己内酰胺。 然后将污染的ε-己内酰胺和水的混合物在氢气和氢化催化剂的存在下氢化，以产生纯化的ε-己内酰胺。 混合物中受污染的ε-己内酰胺的量可以在10至95重量％之间。
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公开(公告)号：US06706153B2
公开(公告)日：2004-03-16
申请号：US09226718
申请日：1999-01-07
IPC分类号： B01D338
CPC分类号： C07D201/16
摘要： The invention relates to a process for the separation of a ketoxime or aldoxime from a ketoxime- or aldoxime-containing amide mixture in which the ketoxime or aldoxime is separated from the amide mixture by distillation. This has proved to be a very simple and direct method for separating the ketoxime and/or aldoxime from the desired amide.
摘要翻译： 本发明涉及从含有酮肟或醛肟的酰胺混合物中分离酮肟或醛肟的方法，其中酮肟或醛肟通过蒸馏与酰胺混合物分离。 已证明这是一种非常简单和直接的方法，用于将酮肟和/或醛肟与所需酰胺分离。
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公开(公告)号：US06191274B1
公开(公告)日：2001-02-20
申请号：US09134756
申请日：1998-08-17
IPC分类号： C07D20116
CPC分类号： C07D201/08 , C07D201/16
摘要： Process to separate &egr;-caprolactam from an aqueous mixture containing &egr;-caprolactam and at least 0.5 wt % oligomers, wherein the separation is performed by extraction using an organic extraction agent. The aqueous mixture may be obtained in a process to prepare &egr;-caprolactam starting from 6-aminocapronitrile or in a process to prepare &egr;-caprolactam starting from 6-aminocaproic acid.
摘要翻译： 从含有ε-己内酰胺和至少0.5wt％低聚物的含水混合物中分离ε-己内酰胺的方法，其中通过使用有机萃取剂萃取进行分离。 含水混合物可以在从6-氨基己腈开始制备ε-己内酰胺或从6-氨基己酸开始制备ε-己内酰胺的方法中获得。
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公开(公告)号：US5668277A
公开(公告)日：1997-09-16
申请号：US632082
申请日：1996-04-15
IPC分类号： B01J27/16 , C07B61/00 , C07C227/18 , C07C231/12 , C07C253/20 , C07D201/12
CPC分类号： C07D201/12 , C07C253/20
摘要： One or more polyamides can be depolymerized in the presence of at least one nitrogen-containing compound. The depolymerization takes place at a pressure between about 0.5 and about 5 atm. The polyamide may be in the form of carpet waste or other heterogeneous form. Advantages include better selectivity towards the polyamide monomeric components and use of low pressure equipment to effect depolymerization.
摘要翻译： 一种或多种聚酰胺可以在至少一种含氮化合物的存在下解聚。 解聚发生在约0.5和约5atm之间的压力下。 聚酰胺可以是地毯废物或其他不同形式的形式。 优点包括对聚酰胺单体组分的更好的选择性和使用低压设备来实现解聚。
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公开(公告)号：US06111099A
公开(公告)日：2000-08-29
申请号：US5512
申请日：1998-01-12
IPC分类号： C07D201/12 , C07D201/16
CPC分类号： C07D201/12
摘要： A process for depolymerizing nylon 6 and recovering caprolactam from the depolymerized products by extraction with alkyl phenolic compounds. Process steps include (a) treating a first mixture comprising nylon 6 with water at a temperature between about 200.degree. C. and about 400.degree. C. to yield a second mixture comprising depolymerized nylon 6 components, wherein the second mixture contains caprolactam at a concentration between about 5 wt. % and about 35 wt. %; (b) optionally, separating insoluble material from the second mixture; (c) extracting the second mixture with an extraction agent to yield an aqueous raffinate third mixture and an organic phase fourth mixture comprising caprolactam and the extraction agent, wherein the extraction agent is an alkyl phenol having a boiling point higher than that of the caprolactam; (d) recovering caprolactam from the organic phase fourth mixture by distillation; (e) recycling the aqueous raffinate third mixture to step (a).
摘要翻译： 一种通过用烷基酚类化合物萃取从解聚产物中解聚尼龙6并回收己内酰胺的方法。 工艺步骤包括（a）在约200℃至约400℃之间的温度下处理包含尼龙6的第一混合物与水，以产生包含解聚的尼龙6组分的第二混合物，其中第二混合物含有浓度为的己内酰胺 约5wt。 ％和约35wt。 ％; （b）任选地，从第二混合物中分离不溶物质; （c）用提取剂萃取第二混合物，得到含水萃余液第三混合物和包含己内酰胺和提取剂的有机相第四混合物，其中提取剂是沸点高于己内酰胺的沸点的烷基苯酚; （d）通过蒸馏从有机相第四混合物中回收己内酰胺; （e）将含水萃余液第三混合物再循环到步骤（a）。
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