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    METHOD OF PRODUCING AMINES AND AMINONITRILES
    151.
    发明专利
    METHOD OF PRODUCING AMINES AND AMINONITRILES 未知

    公开(公告)号：CA2250734C

    公开(公告)日：2004-06-15

    申请号：CA2250734

    申请日：1997-04-03

    Applicant: BASF AG

    Inventor： FISCHER ROLF-HARTMUTH ,  VOIT GUIDO ,  SCHNURR WERNER ,  FLICK KLEMENS

    IPC: B01J23/78 ,  B01J23/94 ,  B01J27/187 ,  B01J27/28 ,  B01J38/10 ,  C07B61/00 ,  C07C209/48 ,  C07C211/12 ,  C07C253/30 ,  C07C255/24 ,  C07C211/09

    Abstract: The invention concerns a method of producing compounds containing NH2 groups by the hydrogenation of compounds which include at least one carbon-nitrogen bond with hydrogen in the presence of a catalys t, at a temperature not below room temperature and at an elevated hydrogen partial pressure optionally in the presence of a solvent. The hydrogenation is carried out under the following conditions: a) a catalyst containing cobalt and/or iron is used b) if the yield, based o n the compound being hydrogenated, and/or the selectivity, based on the desired product, drops below a defined value or if the amount of an undesired side-product increases to more than a defined value, the hydrogenation is interrupted by stopping the feed of the compound being hydrogenated and, if present, also the solvent, c) the catalyst is treated with hydrogen at a temperature in the range 150 to 400.degree.C, using a hydrogen pressure of 0.1 to 30 MPa and a treatment time of 2 to 48 h and d) the hydrogenation is subsequently continued, and the catalysts containing cobalt and/or iron are regenerated.

    Purification of crude caprolactam comprises a three stage distillation process with feeding of the crude caprolactam and an inorganic acid having a b. pt. above the b. pt. of the caprolactam to a first distillation column
    152.
    发明专利
    Purification of crude caprolactam comprises a three stage distillation process with feeding of the crude caprolactam and an inorganic acid having a b. pt. above the b. pt. of the caprolactam to a first distillation column 未知

    公开(公告)号：DE10253094A1

    公开(公告)日：2004-05-27

    申请号：DE10253094

    申请日：2002-11-13

    Applicant: BASF AG

    Inventor： LUYKEN HERMANN ,  ANSMANN ANDREAS ,  BENISCH CHRISTOPH ,  BASLER PETER ,  FISCHER ROLF-HARTMUTH ,  MAIXNER STEFAN ,  MELDER JOHANN-PETER

    IPC: C07D201/16 ,  C07D223/10

    Abstract: A process for the purification of crude caprolactam, prepared by reaction of a mixture comprising 6-aminocapronitrile and water, comprises a three stage distillation process with feeding of the crude caprolactam and an inorganic acid having a b. pt. above the b. pt. of the caprolactam to a first distillation column. A process for the purification of crude caprolactam, prepared by reaction of a mixture comprising 6-aminocapronitrile and water in the presence of a catalyst to form a mixture comprising caprolactam, ammonia, water and high and low b. pt. byproducts followed by removal of ammonia to yield a mixture of caprolactam, water and high and low b. pt. byproducts followed by at least partial removal of water to yield a crude caprolactam containing caprolactam and high and low b. pt. byproducts, comprises: (a) feeding of the crude caprolactam and an inorganic acid having a b. pt. above the b. pt. of the caprolactam to a first distillation column; (b) distillation of the crude caprolactam and inorganic acid to form a sump stream and an overhead stream; (c) feeding of the overhead stream to a second distillation column; (d) distillation of the stream to form a sump stream and overhead stream; (e) feeding of the overhead stream to a third distillation column; (f) distillation of the overhead stream to form a sump stream and purified caprolactam in the overhead stream; and (g) feeding of the sump stream to the first distillation column.

    154.
    发明专利
    未知

    公开(公告)号：DE10225928A1

    公开(公告)日：2003-12-24

    申请号：DE10225928

    申请日：2002-06-11

    Applicant: BASF AG

    Inventor： HESSE MICHAEL ,  SCHLITTER STEPHAN ,  BORCHERT HOLGER ,  SCHUBERT MARKUS ,  ROESCH MARKUS ,  BOTTKE NILS ,  FISCHER ROLF-HARTMUTH ,  WECK ALEXANDER ,  WINDECKER GUNTHER ,  HEYDRICH GUNNAR

    IPC: C07C29/149 ,  C07D315/00 ,  C07C29/132 ,  C07C31/20 ,  C07D307/20 ,  C07D307/32

    Abstract: The invention relates to a method for producing optionally akyl-substituted 1,4-butandiol by two-stage catalytic hydration in the gaseous phase of C4 dicarboxylic acids and/or the derivatives thereof with the steps of: a) introducing a gaseous flow of a C4 dicarboxylic acid or a derivative thereof at 200 to 300 °C and 2 to 60 bar in a first reactor and catalytic gas phase hydration to a mainly optionally alkyl-substituted gamma-butyrolactone containing product; b) introducing the product flow so obtained into a second reactor at a temperature of from 150 °C to 240 °C and a pressure of from 15 to 100 bar and catalytic gas phase hydration to optionally alkyl-substituted 1,4-butandiol; c) removing the desired product from the intermediates, byproducts and possibly not reacted educt; d) optionally returning non-reacted intermediates to one or both hydration stages, whereby in both hydration stages one catalyst each is used which comprises = 5 % by weight, preferably 5 to 95 % by weight, especially 20 to 90 % by weight of an oxidic carrier, the pressure prevailing in the second reactor is higher than in the first reactor, and the product mixture removed from the first reactor is introduced into the second reactor without further purifying it.

    Two-stage method for producing butandiol in two reactors
    156.
    发明专利
    Two-stage method for producing butandiol in two reactors 未知

    公开(公告)号：AU2003238491A8

    公开(公告)日：2003-12-22

    申请号：AU2003238491

    申请日：2003-06-10

    Applicant: BASF AG

    Inventor： ROSCH MARKUS ,  WECK ALEXANDER ,  HEYDRICH GUNNAR ,  SCHLITTER STEPHAN ,  FISCHER ROLF-HARTMUTH ,  BORCHERT HOLGER ,  SCHUBERT MARKUS ,  HESSE MICHAEL ,  BOTTKE NILS ,  WINDECKER GUNTHER

    IPC: C07C29/149 ,  C07D315/00 ,  C07C31/20 ,  C07D307/20

    Abstract: The invention relates to a method for producing optionally akyl-substituted 1,4-butandiol by two-stage catalytic hydration in the gaseous phase of C4 dicarboxylic acids and/or the derivatives thereof with the steps of: a) introducing a gaseous flow of a C4 dicarboxylic acid or a derivative thereof at 200 to 300 °C and 2 to 60 bar in a first reactor and catalytic gas phase hydration to a mainly optionally alkyl-substituted gamma-butyrolactone containing product; b) introducing the product flow so obtained into a second reactor at a temperature of from 150 °C to 240 °C and a pressure of from 15 to 100 bar and catalytic gas phase hydration to optionally alkyl-substituted 1,4-butandiol; c) removing the desired product from the intermediates, byproducts and possibly not reacted educt; d) optionally returning non-reacted intermediates to one or both hydration stages, whereby in both hydration stages one catalyst each is used which comprises = 5 % by weight, preferably 5 to 95 % by weight, especially 20 to 90 % by weight of an oxidic carrier, the pressure prevailing in the second reactor is higher than in the first reactor, and the product mixture removed from the first reactor is introduced into the second reactor without further purifying it.

    CONTINUOUS METHOD FOR PRODUCING POLYAMIDES FROM AMINONITRILES
    157.
    发明专利
    CONTINUOUS METHOD FOR PRODUCING POLYAMIDES FROM AMINONITRILES 未知

    公开(公告)号：BG107443A

    公开(公告)日：2003-09-30

    申请号：BG10744303

    申请日：2003-01-07

    Applicant: BASF AG

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

    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 degrees C and a pressure of 0.1 to 35 x 106 Pa in a stream tube containing a Bronsted 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 degrees C and a pressure which is lower than the pressure in step 1, in the presence of Bronsted acid 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 the first 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 phase and first solid phase is mixed with a gaseous phase or a liquid phase containing water, at a temperature of 150 to 370 degrees C and pressure of 0.1 to 30 x 106 Pa, in order to obtain a product mixture. 14 claims

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