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    CONTINUOUS METHOD FOR PRODUCING POLYAMIDES FROM AMINONITRILES
    61.
    发明专利
    CONTINUOUS METHOD FOR PRODUCING POLYAMIDES FROM AMINONITRILES 未知

    公开(公告)号：CA2415653A1

    公开(公告)日：2002-01-31

    申请号：CA2415653

    申请日：2001-07-10

    Applicant: BASF AG

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

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

    Abstract: The invention relates to a continuous method for producing a polyamide by reacting at least one aminonitrile with water. Said method comprises the following steps: (1) at least one aminonitrile is reacted with water in the presence of an organic liquid diluting agent at a temperature of 90 to 400 ~ C and a pressure of 0.1 to 35 x 106 Pa in a stream tube containing a Brönsted acid catalyst selected from a beta-zeolite, phyllosilicate, or titanium dioxide catalyst consisting of 70 to 100 wt. % of anatase and 0 to 30 wt. % of rutile, in which up to 40 wt. % of the titanium dioxide can be replaced by tungsten oxide, in order to obtain a reaction mixture, (2) the reaction mixture is further reacted at a temperature of 150 to 400 ~C and a pressure which is lower than the pressure in step 1, in the presence of a Brönsted ac id catalyst selected from a beta-zeolite, phyllosilicate, or titanium dioxide catalyst consisting of 70 to 100 wt. % anatase and 0 to 30 wt. % rutile, in which up to 40 wt. % of the titanium dioxide can be replaced by tungsten oxide, the temperature and the pressure being chosen in such a way that a first gas phase and a first liquid phase or a first solid phase or a mixture of a first solid phase and a first liquid phase is obtained, the first gas phase being separated from thefirst liquid phase or first solid phase or the mixture of the first liquid phase and first solid phase, and (3) the first liquid phase or the first solid phase or the mixture of the first liquid pha se and first solid phase is mixed with a gaseous phase or a liquid phase containing water, at a temperature of 150 to 370 ~C and a pressure of 0.1 to 30 x 106 Pa, in order to obtain a product mixture.

    62.
    发明专利
    未知

    公开(公告)号：BR9912284A

    公开(公告)日：2001-04-17

    申请号：BR9912284

    申请日：1999-07-02

    Applicant: BASF AG

    Inventor： LUYKEN HERMANN ,  OHLBACH FRANK ,  ANSMANN ANDREAS ,  BASSLER PETER ,  FISCHER ROLF ,  MELDER JOHANN-PETER ,  MERGER MARTIN ,  REHFINGER ALWIN ,  VOIT GUIDO ,  ACHHAMMER G NTHER

    IPC: C07B61/00 ,  C07C209/48 ,  C07C209/84 ,  C07C209/86 ,  C07C211/12 ,  C07C253/30 ,  C07C253/34 ,  C07C255/24

    Abstract: The invention relates to a method for simultaneous production of 6-aminocapronitrile and hexamethylenediamine from adipodinitrile, comprising the following steps: a) hydrogenating adipodinitrile in the presence of a catalyst containing an element of the VIII subgroup thereby obtaining a mixture containing 6-aminocapronitrile, hexamethylenediamine, adipodinitrile and high boilers; b) distillative separation of hexamethylenediamine from the mixture containing 6-aminocapronitrile, hexamethylenediamine, adipodinitrile and high boilers or c1) distillative separating 6-aminocapronitrile and subsequently d1) distillative separation of adipodinitrile or c2) simultaneous distillative separation of 6-aminocapronitrile and adipodinitrile into separate fractions. The invention is characterized in that temperatures in the bottoms of the column in steps d1) or c2) are under 185 DEG C. The adipodinitrile thus obtained contains less impurities than for instance 1-amino-2-cyanocyclopentenes.

    64.
    发明专利
    未知

    公开(公告)号：BR9812365A

    公开(公告)日：2000-09-19

    申请号：BR9812365

    申请日：1998-09-08

    Applicant: BASF AG

    Inventor： VOIT GUIDO ,  BOHNSACK ANDREAS ,  FISCHER ROLF ,  BASSLER PETER ,  LUYKEN HERMANN ,  MERGER MARTIN ,  FLICK KLEMENS

    IPC: B01J23/78 ,  B01J23/745 ,  C07B61/00 ,  C07C253/30 ,  C07C255/24 ,  C07C255/26

    Abstract: The invention relates to a method for producing aliphatic alpha-omega amino nitriles in the presence of a catalyst composed of (a) iron or an iron based compound or a mixture thereof (b) 0.01 to 5 wt. %, in relation to (a), a promoter based on 2, 3, 4, or 5 elements selected from the group comprising aluminum, silicon, zirconium, titanium, and vanadium, and (C) to 0.5 wt. % in relation to (a) a compound based on an alkaline metal or alkaline-earth metal. The inventive method is characterized in that the aliphatic alpha-omega dinitrile contains 1.0 ppm or more phosphorus. Catalysts are obtainable through the reductive and optional successive passivation of magnetite, whereby the catalysts have a BET surface of 3 to 10 m2/g, a total pore volume of 0.05 to 0.2 ml/g, an average pore diameter of 0.03 to 0.1 mm and a pore volume portion in the range of 0.01 to 0.1 mm of 50 to 70%.

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