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公开(公告)号：US09738756B2
公开(公告)日：2017-08-22
申请号：US14888243
申请日：2014-04-30
Applicant: BASF SE
Inventor： Rüdiger Häffner , Rolf-Egbert Grützner , Achim Stammer , Angela Ulzhöfer
CPC classification number: C08G69/46 , C08G69/06 , C08G69/30 , C08J5/18 , C08J2377/02
Abstract: The invention relates to a method for synthesizing a polyamide, in which method an aqueous solution is sprayed onto the polyamide before and/or during a solid-state post-condensation process. The aqueous solution comprises at least a first compound, selected from the group comprising phosphoric acid, fully neutralized salts of phosphoric acid, partially neutralized salts of phosphoric acid, and mixtures thereof, and a second compound, selected from the group comprising an acid, an anhydride, a lactone, ammonia, an amine, and mixtures thereof, with the stipulation that the second compound is not phosphoric acid and is not phosphoric acid anhydride. The spraying occurs at a temperature that lies below the boiling point of water. A polyamide that can be produced by means of the method according to the invention can be used in particular to produce films, monofilaments, fibers, threads, or textile sheet materials.
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公开(公告)号：US08629237B2
公开(公告)日：2014-01-14
申请号：US13682091
申请日：2012-11-20
Applicant: BASF SE
Inventor： Rüdiger Häffner , Faissal-Ali El-Toufaili , Achim Stammer , Rolf-Egbert Grützner , Angela Ulzhöfer , Jens Becker
Abstract: A process for producing polyamides from the corresponding monomers and/or prepolymers comprises the steps of (a) reacting the monomers and/or prepolymers and optionally further components under polyamide-forming reaction conditions to form polyamide, (b) treating the polyamide obtained in step (a) in a kneader above the melting temperature of the polyamide, (c) further processing the polyamide from step (b) into pellet, film, fiber or moldings, preferably pelletizing the polyamide, (d) extracting some or all unconverted monomers and any product dimers and oligomers and also optionally further components from the polyamide and/or drying the polyamide.
Abstract translation: 从相应的单体和/或预聚物制备聚酰胺的方法包括以下步骤：（a）在聚酰胺形成反应条件下使单体和/或预聚物和任选的其它组分反应形成聚酰胺，（b）处理步骤 （a）在高于聚酰胺熔融温度的捏合机中，（c）将步骤（b）中的聚酰胺进一步加工成颗粒，膜，纤维或模制品，优选将聚酰胺造粒，（d）提取一些或所有未转化的单体和 任何产物二聚体和低聚物，并且还任选地来自聚酰胺的另外的组分和/或干燥聚酰胺。
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公开(公告)号：US20130131305A1
公开(公告)日：2013-05-23
申请号：US13682091
申请日：2012-11-20
Applicant: BASF SE
Inventor： Rüdiger Häffner , Faissal-Ali El-Toufaili , Achim Stammer , Rolf-Egbert Grützner , Angela Ulzhöfer , Jens Becker
IPC: C08G69/00
Abstract: A process for producing polyamides from the corresponding monomers and/or prepolymers comprises the steps of (a) reacting the monomers and/or prepolymers and optionally further components under polyamide-forming reaction conditions to form polyamide, (b) treating the polyamide obtained in step (a) in a kneader above the melting temperature of the polyamide, (c) further processing the polyamide from step (b) into pellet, film, fiber or moldings, preferably pelletizing the polyamide, (d) extracting some or all unconverted monomers and any product dimers and oligomers and also optionally further components from the polyamide and/or drying the polyamide.
Abstract translation: 从相应的单体和/或预聚物制备聚酰胺的方法包括以下步骤：（a）在聚酰胺形成反应条件下使单体和/或预聚物和任选的其它组分反应形成聚酰胺，（b）处理步骤 （a）在高于聚酰胺熔融温度的捏合机中，（c）将步骤（b）中的聚酰胺进一步加工成颗粒，膜，纤维或模制品，优选将聚酰胺造粒，（d）提取一些或所有未转化的单体和 任何产物二聚体和低聚物，并且还任选地来自聚酰胺的其它组分和/或干燥聚酰胺。
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