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    PROCESS FOR CONTINUOUSLY PREPARING COPOLYAMIDES FROM LACTAMS AND SALTS OF DIAMINES AND DICARBOXYLIC ACIDS
    2.
    发明申请
    PROCESS FOR CONTINUOUSLY PREPARING COPOLYAMIDES FROM LACTAMS AND SALTS OF DIAMINES AND DICARBOXYLIC ACIDS 审中-公开
    由二胺和二羧酸连续制备内酰胺和盐的共聚物的方法

    公开(公告)号：WO2010066769A3

    公开(公告)日：2010-11-25

    申请号：PCT/EP2009066692

    申请日：2009-12-09

    Applicant: BASF SE ,  PLACHETTA CHRISTOPH ,  GERSTLAUER ACHIM ,  LANG REINHARD ,  SAUER THOMAS ,  BECKER JENS

    Inventor： PLACHETTA CHRISTOPH ,  GERSTLAUER ACHIM ,  LANG REINHARD ,  SAUER THOMAS ,  BECKER JENS

    IPC: C08G69/36 ,  B01D1/02

    CPC classification number: C08G69/36 ,  C08G69/08 ,  C08G69/28 ,  C08L77/00

    Abstract: A process for continuously preparing copolyamides from lactams and salts of diamines and dicarboxylic acids, in which lactams are passed together with salts of diamines and dicarboxylic acids from the top downward through a vertical polymerization tube at polyamide-forming temperatures, is characterized in that a) an aqueous solution of lactams is mixed intensively with salts of diamines and dicarboxylic acids under elevated pressure which is greater than the vapor pressure of the mixture which forms in a mixing apparatus at a temperature of 80 to 300°C, b) the mixture thus obtained is supplied to a heated helical tube evaporator in which a liquid phase and a vapor phase form at a temperature of 140 to 300°C, a stream of steam and/or inert gas optionally being introduced into the mixture upstream of the helical tube, c) the vapor phase formed in stage b) is removed from the liquid phase and separated in a column into steam and into organic components comprising diamines, dicarboxylic acids and lactams, and the organic components are recycled into the polymerization, d) the liquid phase from the helical tube of stage b), mixed with the organic components of stage c), is passed from the top downward through a vertical polymerization tube at polyamide-forming temperatures to obtain a copolyamide.

    Abstract translation: 一种用于连续生产由内酰胺和二胺的盐和二元羧酸共聚酰胺的方法，其中，指示与二胺的盐和二羧酸的从顶部到底部通过在聚酰胺形成温度的垂直聚合管一起形成内酰胺，其特征在于：a） 由二胺和升高的压力下比所得到的混合物的蒸气压，在80的温度下在混合设备中充分混合至300℃更高的二羧酸的盐具有内酰胺的水溶液，b）将混合物由此获得加热的盘管蒸发器 供给，其中，在140至300℃的液相和蒸汽相，其中，一个任选的螺旋形管C之前发起Stromaus水蒸汽和/或惰性气体引入混合物）形成在步骤b）的蒸气相的温度下形成 与液相分离并在一个塔中进行 水蒸汽，并通过一个立式聚合含在二胺，二羧酸和内酰胺）用）混合，从顶部到底部的步骤c中的有机组分中分离出来的有机组分和在聚合d有机组分），来自步骤b的螺旋管液相返回 在聚酰胺形成温度下通过并接受共聚酰胺。

    5.
    发明专利
    未知

    公开(公告)号：AT492584T

    公开(公告)日：2011-01-15

    申请号：AT07821551

    申请日：2007-10-19

    Applicant: BASF SE

    Inventor： WEISS ROBERT ,  BECKER JENS

    IPC: C08G69/04 ,  C08G69/16 ,  C08G69/18 ,  C08G69/46

    Abstract: Helical tube evaporators are used to concentrate aqueous extract solutions from the extraction of polyamides based on polyamide 6. A process for preparing polyamides based on polyamide 6 comprises the stages of b) monophasic or biphasic reaction of aqueous extract solutions from the extraction of polyamides based on polyamide 6, which may be enriched with caprolactam, aminocapronitrile, aminocaproic acid or mixtures thereof, in a prereactor at pressures in the range from 5 to 40 bar and temperatures in the range from 150 to 300° C., the gaseous phase formed being removable from the liquid phase in the case of the biphasic reaction, c) discharge of the reaction mixture from stage b) through a helical tube evaporator at a temperature in the range from 220 to 300° C. with pressure reduction to about atmospheric pressure and removal of a gaseous phase to obtain a liquid phase, d) further reaction of the liquid phase from stage c) at temperatures in the range from 240 to 300° C. and pressures in the range from atmospheric pressure to 2 bar with removal of a gaseous phase.

    6.
    发明专利
    未知

    公开(公告)号：BRPI0718502A2

    公开(公告)日：2013-12-03

    申请号：BRPI0718502

    申请日：2007-10-19

    Applicant: BASF SE

    Inventor： WEISS ROBERT ,  BECKER JENS

    IPC: C08G69/04 ,  C08G69/16 ,  C08G69/18 ,  C08G69/46

    Abstract: Helical tube evaporators are used to concentrate aqueous extract solutions from the extraction of polyamides based on polyamide 6. A process for preparing polyamides based on polyamide 6 comprises the stages of b) monophasic or biphasic reaction of aqueous extract solutions from the extraction of polyamides based on polyamide 6, which may be enriched with caprolactam, aminocapronitrile, aminocaproic acid or mixtures thereof, in a prereactor at pressures in the range from 5 to 40 bar and temperatures in the range from 150 to 300° C., the gaseous phase formed being removable from the liquid phase in the case of the biphasic reaction, c) discharge of the reaction mixture from stage b) through a helical tube evaporator at a temperature in the range from 220 to 300° C. with pressure reduction to about atmospheric pressure and removal of a gaseous phase to obtain a liquid phase, d) further reaction of the liquid phase from stage c) at temperatures in the range from 240 to 300° C. and pressures in the range from atmospheric pressure to 2 bar with removal of a gaseous phase.

    METODO PARA GRANULAR FUSIONES DE POLIMERO QUE CONTIENEN FRACCIONES DE BAJA EBULLICION.
    7.
    发明专利
    METODO PARA GRANULAR FUSIONES DE POLIMERO QUE CONTIENEN FRACCIONES DE BAJA EBULLICION. 未知

    公开(公告)号：MX2008011805A

    公开(公告)日：2008-09-29

    申请号：MX2008011805

    申请日：2007-03-21

    Applicant: BASF SE

    Inventor： KOPIETZ MICHAEL ,  SEIBRING JOACHIM ,  BECKER JENS ,  BRUCKMANN THEODOR

    IPC: B29B9/06 ,  B29C44/34 ,  B29C48/345

    Abstract: La invención se relaciona con un proceso para granular fusiones de polímero, a presión superior a la ambiental, en una cámara de granulación hacia la que un aparato cortante se ha insertado en un primer paso, la cámara de granulación se inunda con un gas que es inerte hacia la fusión de polímero y cuya presión es aquella a la que se lleva a cabo el proceso de granulación. La fusión de polímero luego se inyecta hacia la cámara de granulación. Finalmente, el gas se desplaza de la cámara de granulación a través de un líquido tan pronto como la fusión de polímero empieza a fluir a través del aparato cortante, esta fusión siendo cortada en gránulos. (Figura 2).

    9.
    发明专利
    未知

    公开(公告)号：AT540072T

    公开(公告)日：2012-01-15

    申请号：AT09765919

    申请日：2009-06-19

    Applicant: BASF SE

    Inventor： LOTH WOLFGANG ,  EL-TOUFAILI FAISSAL-ALI ,  STAMMER ACHIM ,  KORY GAD ,  GERSTLAUER ACHIM ,  BECKER JENS

    IPC: C08G69/46

    Abstract: A continuous process for the multistage drying and postcondensation of polyamide pellets in the solid phase comprises 1) carrying out the predrying process in a continuous drying apparatus which is operated in countercurrent mode or in crossflow mode with inert gas or steam, or with a mixture of inert gas and steam, using a pellet temperature in the range from 70 to 200° C., and 2) Carrying out the subsequent continuous postcondensation process in a separate vertical duct with moving bed at a pellet temperature in the range from 120 to 210° C., where the duct is operated in countercurrent mode with inert gas or steam, or with a mixture of inert gas and steam, the inert gas is introduced at least two sites along the duct, and from 15 to 90% of the inert gas is introduced at the base of the vertical duct and from 10 to 85% of the inert gas is introduced in the upper half below the surface of the pellets.

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