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    HERSTELLUNG VON POLYAMIDEN DURCH HYDROLYTISCHE POLYMERISATION UND NACHFOLGENDE BEHANDLUNG IN EINEM KNETER
    51.
    发明公开
    HERSTELLUNG VON POLYAMIDEN DURCH HYDROLYTISCHE POLYMERISATION UND NACHFOLGENDE BEHANDLUNG IN EINEM KNETER 审中-公开
    通过在捏合机水解聚合和随后的处理的聚酰胺的合成

    公开(公告)号：EP3143069A1

    公开(公告)日：2017-03-22

    申请号：EP15723899.9

    申请日：2015-05-13

    Applicant: BASF SE

    Inventor： ZHU, Ning ,  HÄFFNER, Rüdiger ,  STAMMER, Achim ,  ORTIZ, Cesar ,  BIEDASEK, Silke ,  EL-TOUFAILI, Faissal-Ali

    IPC: C08G69/16 ,  C08G69/06

    CPC classification number: C08G69/16 ,  C08G69/06 ,  C08G69/14 ,  C08G69/46

    Abstract: What is proposed is a process for producing polyamides having the following steps: a) providing a monomer composition comprising at least one lactam or at least one aminocarbonitrile and/or oligomers of these monomers, b) reacting the monomer composition provided in step a) in a hydrolytic polymerization at elevated temperature in the presence of water to obtain a reaction product comprising polyamide, water, unconverted monomers and oligomers, and c) postpolymerizing the reaction product obtained in step b) in at least one kneader (3), the kneader (3) used in step c) having at least two screws, with at least one reaction zone and one discharge zone arranged in the direction of the longitudinal axes of the screws, and with kneading elements arranged in succession on each of the screws in the at least one reaction zone, wherein a free space zone having a free space volume in the range from 10% to 70%, based on the total volume of the at least one reaction zone, is provided in the kneader (3) above the at least two screws.

    Abstract translation: 什么建议是用于制造具有以下步骤聚酰胺的方法：a）提供单体组合物，包括至少一种内酰胺或至少一种aminocarbonitrile和/或起反应的单体组合物合成单体b的低聚物）在步骤提供的） 在升高的温度在水的存在下水解聚合在至少一个捏合机得到反应产物包含聚酰胺，水，未转化的单体和低聚物，和c）postpolymerizing在步骤b中获得的反应产物）捏合机（3）中，（ 3）在步骤c）中使用具有至少两个螺钉，具有至少一个反应区和在螺钉的纵向轴线的方向上布置成一个放电区，并在连续布置在每个在螺钉捏合元件 至少一个反应区，worin具有范围内的自由空间体积的10％至70％，基于所述至少一个反应区的总体积上的自由空间区，在kneade提供 R（3）上方的至少两个螺钉。

    INTEGRIERTES VERFAHREN ZUR HERSTELLUNG VON TRIOXAN AUS FORMALDEHYD
    56.
    发明公开
    INTEGRIERTES VERFAHREN ZUR HERSTELLUNG VON TRIOXAN AUS FORMALDEHYD 审中-公开
    集成方法生成甲醛由三恶烷

    公开(公告)号：EP1915359A1

    公开(公告)日：2008-04-30

    申请号：EP06792714.5

    申请日：2006-08-04

    Applicant: BASF SE

    Inventor： LANG, Neven ,  STROEFER, Eckhard ,  STAMMER, Achim ,  FRIESE, Thorsten ,  SIEGERT, Markus ,  HASSE, Hans ,  GRÜTZNER, Thomas ,  BLAGOV, Sergej

    IPC: C07D323/06

    CPC classification number: C07D323/06 ,  Y02P20/125

    Abstract: The invention relates to an integrated method for producing trioxane from formaldehyde. According to said method, a flow A1 containing water and formaldehyde and a return flow B2 consisting essentially of water and formaldehyde are introduced into a trioxane synthesis reactor in which the formaldehyde is converted into trioxane, forming a product flow A2 containing trioxane, water and formaldehyde; the flow A2 is introduced into a first distillation column and distilled at a pressure of between 0.1 and 2.5 bar, forming a trioxane-enriched flow B1 and the flow B2 consisting essentially of water and formaldehyde; the flow B1 and a return flow D1 containing trioxane, water and formaldehyde are introduced into a second distillation column and distilled at a pressure of between 0.2 and 17.5 bar, forming a product flow C2 consisting essentially of trioxane and a flow C1 containing trioxane, water and formaldehyde; and the flow C1 is introduced into a third distillation column and distilled at a pressure of between 0.1 and 2.5 bar, forming the return flow D1 containing trioxane, water and formaldehyde and a flow D2 consisting essentially of water and formaldehyde.

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