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    Continuous preparation of polyamides from aminonitriles
    11.
    发明专利
    Continuous preparation of polyamides from aminonitriles 未知

    公开(公告)号：CZ200391A3

    公开(公告)日：2003-06-18

    申请号：CZ200391

    申请日：2001-07-10

    Applicant: BASF AG

    Inventor： BASSLER PETER DR ,  WINTERLING HELMUT DR ,  FISCHER ROLF-HARTMUTH DR ,  LOTH WOLFGANG DR

    IPC: C08G69/00 ,  C08G69/04 ,  C08G69/08 ,  C08G69/16

    Abstract: The continuous process for preparing a polyamide by reacting at least one aminonitrile with water comprises:(1) reacting at least one aminonitrile with water in the presence of an organic liquid diluent at from 90 to 400° C. and from 0.1 to 35x10 Pa in a flow tube containing a Brönsted acid catalyst selected from a beta-zeolite catalyst, a sheet-silicate catalyst or a titanium dioxide catalyst comprising from 70 to 100% by weight of anatase and from 0 to 30% by weight of rutile and in which up to 40% by weight of the titanium dioxide may be replaced by tungsten oxide, to obtain a reaction mixture,(2) further reacting the reaction mixture at from 150 to 400° C. and a pressure which is lower than the pressure in stage 1 in the presence of a Brönsted acid catalyst selected from a beta-zeolite catalyst, a sheet-silicate catalyst or a titanium dioxide catalyst comprising from 70 to 100% by weight of anatase and from 0 to 30% by weight of rutile and in which up to 40% by weight of the titanium dioxide may be replaced by tungsten oxide, the temperature and pressure being selected so as to obtain a first gas phase and a first liquid phase or a first solid phase or a mixture of first solid and first liquid phases and so that the first gas phase is separated from the first liquid phase or first solid phase or from the mixture of first liquid and first solid phases, and(3) admixing the first liquid or the first solid phase or the mixture of first liquid and first solid phases with a gaseous or liquid phase comprising water at from 150 to 370° C. and from 0.1 to 30x10 Pa, to obtain a product mixture.

    Process for preparing aliphatic alpha, omega-aminonitriles
    12.
    发明专利
    Process for preparing aliphatic alpha, omega-aminonitriles 未知

    公开(公告)号：CZ288850B6

    公开(公告)日：2001-09-12

    申请号：CZ197797

    申请日：1995-12-16

    Applicant: BASF AG

    Inventor： SCHNURR WERNER DR ,  FISCHER ROLF DR ,  BASSLER PETER DR ,  HARDER WOLFGANG DR

    IPC: C07B61/00 ,  C07C253/30 ,  C07C255/24

    Abstract: The present invention relates to a process for preparing aliphatic alpha, omega-aminonitriles of the general formula NC-(CHi2)in-CHi2-NHi2, wherein n represents an integer ranging from 1 to 10, by using partial hydrogenation of aliphatic alpha, omega-dinitriles of the general formula NC-(CHi2)in-CN, in which n is as specified above, at a temperature ranging from 40 to 120 degC and at pressure in the range of 2 to 12 MPa in the presence of a base and a hydrogenation catalyst, whereby hydrogenation is carried out in the presence of ammonia and lithium hydroxide or a compound providing lithium hydroxide during hydrogenation.

    PROCESS OF SIMULTANEOUS PREPARATION OF CAPROLACTAM AND HEXAMETHYLENEDIAMINE
    15.
    发明专利
    PROCESS OF SIMULTANEOUS PREPARATION OF CAPROLACTAM AND HEXAMETHYLENEDIAMINE 未知

    公开(公告)号：CZ202797A3

    公开(公告)日：1998-02-18

    申请号：CZ202797

    申请日：1995-12-22

    Applicant: BASF AG

    Inventor： ACHHAMMER GUNTER DR ,  BASSLER PETER DR ,  FISCHER ROLF DR ,  FUCHS EBERHARD DR ,  LUYKEN HERMANN ,  SCHNURR WERNER DR ,  WITZEL TOM DR

    IPC: C07D201/02 ,  C07C209/48 ,  C07C211/12 ,  C07D201/08 ,  C07D223/10

    Abstract: The invention concerns the simultaneous preparation of caprolactam and hexamethylene diamine from adipodinitrile, by the following steps: (a) the adipodinitrile is partially hydrogenated, producing a mixture substantially containing 6-aminocapronitrile, hexamethylene diamine, ammonia, adipodinitrile and hexamethylene imine (= "the mixture"); (b) the mixture obtained in step (a) is distilled, producing ammonia, as the forerunnings, and a residue I, in the presence of a compound A which is inert in the distillation conditions, the ammonia not being separated totally; (c) the residue I, substantially containing "the mixture", inert compound A and ammonia, the ammonia content being less than that of the mixture used in step (b), is subjected to a second distillation, producing a mixture of the inert compound A and ammonia, as the forerunnings, and a residue II; (d) the base II, substantially containing "the mixture" and inert compound A, is subjected to distillation in a third column, producing the inert compound A, as the forerunnings, and a residue III; (e) the base III, substantially containing "the mixture" and optionally an inert compound B, is subjected to distillation in a fourth column, producing forerunnings KP1, which substantially contain hexamethylene imine, optionally inert compound B and hexamethylene diamine, and a residue IV; (f) the forerunnings KP1 are subjected in a fifth column to distillation, producing forerunnings KP2, which substantially contain hexamethylene imine and optionally inert compound B, and a residue V, which substantially contains hexamethylene diamine with a degree of purity of at least 95 %, the forerunnings KP2 being fed to the third column or optionally only partially fed to the third column, and the rest being discarded; and (g) the residue IV, substantially containing 6-aminocapronitrile and adipodinitrile, is subjected in a sixth column to distillation, producing 6-aminocapronitrile with a degree of purity of at least 95 %, as forerunnings, and adiponitrile in the residue. The resultant 6-aminocapronitrile is cyclized to form caprolactam.

    CONTINUOUS PREPARATION OF A COMPOUND WHICH BEARS AT LEAST TWO FUNCTIONAL GROUPS
    18.
    发明专利
    CONTINUOUS PREPARATION OF A COMPOUND WHICH BEARS AT LEAST TWO FUNCTIONAL GROUPS 未知

    公开(公告)号：MY135832A

    公开(公告)日：2008-07-31

    申请号：MYPI20041926

    申请日：2004-05-20

    Applicant: BASF AG

    Inventor： STUER WOLFRAM DR ,  SCHEIDEL JENS DR ,  VOSS HARTWIG DR ,  BASSLER PETER DR ,  ROEPER MICHAEL PROF DR

    IPC: C07C67/347 ,  C07C51/353 ,  C07C51/36 ,  C07C51/47 ,  C07C67/303 ,  C07C67/56

    Abstract: A PROCESS FOR CONTINUOUSLY PREPARING A COMPOUND WHICH BEARS AT LEAST TWO FUNCTIONAL GROUPS WHICH ARE EACH INDEPENDENTLY SELECTED FROM THE GROUP CONSISTING OF NITRILE GROUP, CARBOXYLIC ACID GROUP, CARBOXYLIC ESTER GROUP AND CARBOXAMIDE GROUP, COMPRISING THE STEPS OF A) ADDING TWO TERMINAL OLEFINS WHICH BEAR THE FUNCTIONAL GROUPS REQUIRED TO PREPARE THE COMPOUND AS PER A1) CONTAINING AT LEAST TWO FUNCTIONAL GROUPS, IN THE PRESENCE OF A COMPOUND AS PER A3) WHCH IS SUITABLE AS A CATALYST FOR THIS ADDITION AND IS HOMOGENEOUS WITH RESPECT TO THE REACTION MIXTURE TO OBTAIN A MIXTURE COMPRISING A1)A COMPOUND WHICH IS OBTAINED BY MONOADDITION OF THE TWO TERMINAL OLEFINS MENTIONED AND BEARS AT LEAST TWO FUNCTIONAL GROUPS WHICH ARE EACH INDEPENDENTLY SELECTED FROM THE GROUP CONSISTING OF NITRILE GROUP, CARBOXYLIC ACID GROUP, CARBOXYLIC ESTER GROUP AND CARBOXAMIDE GROUP, A2) A COMPOUND WHICH IS OBTAINED BY POLYADDITION OF THE TWO TERMINAL OLEFINS MENTIONED AND A3) THE COMPOUND WHICH IS SUITABLE AS A CATALYST FOR THIS ADDITION AND IS HOMOGENEOUS WITH RESPECT TO THE REACTION MIXTURE, B) DISTILLING THE MIXTURE OBTAINED IN STEP A) TO OBTAIN B1) THE COMPOUND WHICH IS OBTAINED BY MONOADDITION OF THE TWO TERMINAL OLEFINS MENTIONED AND BEARS AT LEAST TWO FUNCTIONAL GROUPS WHICH ARE EACH INDEPENDENTLY SELECTED FROM THE GROUP CONSISTING OF NITRILE GROUP, CARBOXYLIC ACID GROUP, CARBOXYLIC ESTER GROUP AND CARBOXAMIDE GROUP, AS THE TOP PRODUCT AND B2) A MIXTURE COMPRISING B2A)A COMPOUND WHICH IS OBTAINED BY MONOADDITION OF THE TWO TERMINALS OLEFINS MENTIONED AND BEARS AT LEAST TWO FUNCTIONAL GROUPS WHICH ARE EACH INDEPENDENTLY SELECTED FROM THE GROUP CONSISTING OF NITRILE GROUP, CARBOXYLIC ACID GROUP, CARBOXYLIC ESTER GROUP AND CARBOXAMIDE GROUP, B2B) A COMPOUND WHICH IS OBTAINED BY POLYADDITION OF THE TWO TERMINAL OLEFINS MENTIONED AND B2C) THE COMPOUND WHICH IS SUITABLE AS A CATALYST FOR THIS ADDITION AND IS HOMOGENEOUS WITH RESPECT TO THE REACTION MIXTURE, C) SEPARATING THE ENTIRE MIXTURE OBTAINED IN STEP B2) OR A PORTION THREOF BY MEANS OF A SEMIPERMEABLE MEMBRANE TO OBTAIN A PERMEATE AND A RETENTATE, IN SUCH A WAY THAT THE WEIGHT RATION OF COMPONENT B2B) TO COMPONENT B2C) IN THE MIXTURE B2) FED IN STEP C) IS SMALLER THAN IN THE RETENTATE, D) RECYCLING THE PERMEATE OBTAINED IN STEP B2) PARTLY OR FULLY INTO STEP A) AND E) RECYCLING THE PORTION OF THE MIXTURE OBTAINED IN STEP B2) WHICH HAS NOT BEEN SEPARATED IN C) PARTLY OR FULLY INTO STEP A).

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