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    33.
    发明专利
    未知

    公开(公告)号：BR0316179A

    公开(公告)日：2005-09-27

    申请号：BR0316179

    申请日：2003-11-11

    Applicant: BASF AG

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

    IPC: C07D201/16 ,  C07D201/08

    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.

    35.
    发明专利
    未知

    公开(公告)号：DE10223827A1

    公开(公告)日：2003-12-11

    申请号：DE10223827

    申请日：2002-05-28

    Applicant: BASF AG

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

    IPC: C07C209/84 ,  C07C211/09 ,  C07C211/12 ,  C07C253/34 ,  C07C255/09 ,  C07C255/24 ,  C07C255/04 ,  C07C253/30 ,  C08G69/04

    Abstract: A process for reducing the level of an aliphatic monounsaturated amine (IV) in a mixture (V) containing an aminonitrile (I) or a diamine (II) or a dinitrile (III) or mixtures thereof as well as said mine (IV) by a) reacting said mixture (V) with an anionic nucleophile (VI) which contains a nucleophilic atom selected from the group consisting of oxygen, nitrogen and sulfur, which is capable of taking up an H + ion to form an acid having a pK a value in the range from 7 to 11, as measured in water at 25° C., and which has a relative nucleophilicity, as measured in methyl perchlorate/methanol at 25° C., in the range from 3.4 to 4.7 when said nucleophilic atom is oxygen, in the range from 4.5 to 5.8 when said nucleophilic atom is nitrogen, and in the range from 5.5 to 6.8 when said nucleophilic atom is sulfur, in an amount in the range from 0.01 to 10 mol per mole of said amine (IV) in said mixture (V) at a temperature in the range from 50 to 200° C. to obtain a mixture (VII), b) distilling said aminonitrile (I) or said diamine (II) or said dinitrile (III) or mixtures thereof from said mixture (VII) at a temperature in the range from 50 to 200° C. and at a pressure in the range from 0.1 to 100 kPa to obtain a bottom product (VIII), which comprises c) distilling an aminonitrile (I) or diamine (II) or dinitrile (III) or mixtures thereof from said bottom product (VIII) at a temperature which is lower than that chosen in step b).

    METHOD FOR PRODUCING POLYAMIDES
    36.
    发明专利
    METHOD FOR PRODUCING POLYAMIDES 未知

    公开(公告)号：AU2003224047A1

    公开(公告)日：2003-11-03

    申请号：AU2003224047

    申请日：2003-04-08

    Applicant: BASF AG

    Inventor： WINTERLING HELMUT ,  BENISCH CHRISTOPH ,  HAHN THILO

    IPC: C08G69/00 ,  C08G69/04 ,  C08G69/08 ,  C08G69/16 ,  C08G69/20

    Abstract: A process for preparing a polyamide by reacting a mixture which comprises a monomer which has a nitrile group and has at least one other functional group capable of forming a carboxamide group, and comprises water, in the presence of titanium dioxide as catalyst, which comprises using titanium dioxide whose BET surface area, determined to the German standard DIN 66 131 volumetrically by the multipoint method, is in the range from 5 to 35 m2/g.

    METHOD FOR PRODUCING ETHYLDIMETHYLAMINE AND TRIETHYLAMINE
    37.
    发明专利
    METHOD FOR PRODUCING ETHYLDIMETHYLAMINE AND TRIETHYLAMINE 未知

    公开(公告)号：CA2478189A1

    公开(公告)日：2003-09-12

    申请号：CA2478189

    申请日：2003-03-03

    Applicant: BASF AG

    Inventor： BOEHLING RALF ,  STEINBRENNER ULRICH ,  FUNKE FRANK ,  BENISCH CHRISTOPH ,  GAUS GUENTER ,  MUELLER GUENTER

    IPC: C07B61/00 ,  C07C209/60 ,  C07C211/05 ,  C07C211/08

    Abstract: The invention relates to a method for producing ethyldimethylamine and triethylamine, comprising the steps of (i) reacting a mixture from diethylamine and dimethylamine with ethylene in the presence of a catalyst from the group of the alkalimetal dimethylamides, alkalimetal diethylamides and alkalimetal hydrides, (ii) removing the catalyst, (iii) separating by distillation the obtained mixture into triethylamine and ethyldimethylamine and optionallydiethylamine and dimethylamine, (iv) optionally returning the catalyst and the educt amines to the reaction. The inventive method allows t he coupled production of ethyldimethylamine and diethylamine in a simple proces s.

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