PROCEDIMIENTO PARA LA OBTENCION DE LACTAMAS CICLICAS.

    公开(公告)号:ES2250418T3

    公开(公告)日:2006-04-16

    申请号:ES01945063

    申请日:2001-04-30

    Applicant: BASF AG

    Abstract: Procedimiento para la obtención de lactamas cíclicas de la fórmula (II) en la que n y m pueden tener respectivamente los valores 0, 1, 2, 3, 4, 5, 6, 7, 8 y 9 y la suma formada por n + m supone al menos 3, preferentemente al menos 4, R1 y R2 significan grupos alquilo con 1 a 6 átomos de carbono, grupos cicloalquilo con 5 a 7 átomos de carbono o grupos arilo con 6 a 12 átomos de carbono, mediante reacción de un compuesto (I) de la fórmula en la que R1, R2, m y n tienen el significado anteriormente indicado y R significa grupos nitrilo, grupos de amida del ácido carboxílico y grupos de ácido carboxílico, con agua en presencia de un diluyente líquido orgánico en fase líquida, caracterizado porque a) se hace reaccionar el compuesto (I) con agua en la fase líquida en presencia de un diluyente líquido orgánico (III) para dar una mezcla (IV) que contiene una lactama (II), presentando el diluyente (III) con agua una ausencia de miscibilidad bajo determinadas condiciones cuantitativas, de presión yde temperatura, b) se transforma la mezcla de (IV) antes o tras la separación de amoníaco en condiciones cuantitativas, de presión y de temperatura, bajo las cuales se presenten en estado líquido el diluyente (III) y el agua y presenten una falta de miscibilidad, manteniéndose un sistema con dos fases formado por una fase (V), que presenta una mayor proporción en diluyente (III) que en agua, y una fase (VI), que presenta una mayor proporción en agua que en diluyente (III), c) se separa la fase (V) de la fase (VI) y d) se separan de la fase (V) el diluyente (III) y, en caso dado, los productos secundarios elegidos entre el grupo formado por productos de bajo punto de ebullición, productos de elevado punto de ebullición y por compuesto (I) no convertido, obteniéndose una lactama (II).

    METHOD FOR REDUCING THE CONTENT OF AN UNSATURATED AMINE IN A MIXTURE CONTAINING AN AMINO NITRILE, A DIAMINE, A DINITRILE OR MIXTURES THEREOF

    公开(公告)号:IN2925CH2004A

    公开(公告)日:2006-02-17

    申请号:IN2925CH2004

    申请日:2004-12-23

    Applicant: BASF AG

    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).

    94.
    发明专利
    未知

    公开(公告)号:DE50107616D1

    公开(公告)日:2006-02-16

    申请号:DE50107616

    申请日:2001-04-30

    Applicant: BASF AG

    Abstract: The invention relates to a method for producing cyclic lactams of formula (II) by reacting a compound (I) of formula (I) with water in the presence of an organic, liquid dilution agent in the liquid phase. In formula (II), n and m respectively can have the values 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 and the sum of n+m is at least 3, preferably at least 4 and R and R represent C1-C6 alkyl, C5-C7 cycloalkyl or C6-C12 aryl groups. In formula (I), R , R , m and n are defined as above and R represents nitrile, carboxylic acid amide and carboxylic acid groups. The inventive method is characterized in that a) compound (I) is reacted with water in the liquid phase in the presence of an organic, liquid dilution agent (III) to form a mixture (IV) containing a lactam (II) and said mixture (IV) is subjected to an aqueous treatment to obtain a two-phase system.

    95.
    发明专利
    未知

    公开(公告)号:BR0316178A

    公开(公告)日:2005-09-27

    申请号:BR0316178

    申请日:2003-11-11

    Applicant: BASF AG

    Abstract: A process for removing high boilers from crude caprolactam which comprises high boilers, caprolactam and in some cases low boilers, and which has been obtained by a) reacting 6-aminocapronitrile with water to give a reaction mixture b) removing ammonia and unconverted water from the reaction mixture to obtain crude caprolactam, which comprises c) feeding the crude caprolactam to a distillation apparatus to obtain a first substream via the top as a product and a second substream via the bottom, by setting the pressure in the distillation in such a way that the bottom temperature does not go below 170° C., and adjusting the second substream in such a way that the caprolactam content of the second substream is not less than 10% by weight, based on the entire second substream.

    PROCEDIMIENTO PARA LA REDUCCION DEL CONTENIDO EN UNA MISMA AMINA ISATURADA EN UNA MEZCLA QUE CONTIENE UNA AMINA Y UN NITRILO.

    公开(公告)号:ES2228967T3

    公开(公告)日:2005-04-16

    申请号:ES01984785

    申请日:2001-11-29

    Applicant: BASF AG

    Abstract: Procedimiento para la reducción del contenido en una amina cíclica lineal (III), que contiene al menos un doble enlace carbono-nitrógeno, o en un compuesto que puede formar al menos un doble enlace carbono-nitrógeno, en una mezcla (IV) que contiene un aminonitrilo (I) o una diamina (II), o sus mezclas, y amina (III), caracterizado porque a) se hace reaccionar la mezcla (IV) con un nucleófilo aniónico (V), que presenta un átomo nucleófilo seleccionado a partir del grupo constituido por oxígeno, nitrógeno y azufre, que es apto para la absorción de unión H+ bajo formación de un ácido con un valor de pKa en el intervalo de 7 a 11, medido en agua a 25ºC, y que presenta una nucleofilia relativa, medida en perclorato de metilo / etanol a 25ºC, en el intervalo de 3, 4 a 4, 7 en el caso de oxígeno como átomo nucleófilo, en el intervalo de 4, 5 a 5, 8 en el caso de nitrógeno como átomo nucleófilo, en el intervalo de 5, 5 a 6, 8 en el caso de azufre como átomo nucleófilo, en una cantidad en el intervalo de 0, 01 a 10 moles por mol de amina (III) en la mezcla (IV) bajo obtención de una mezcla (VI), y b) se separa por destilación aminonitrilo (I) o diamina (II), o sus mezclas, de la mezcla (VI), a una temperatura en el intervalo de 50 a 170ºC, y a una presión en el intervalo de 0, 5 a 100 kPa.

    98.
    发明专利
    未知

    公开(公告)号:DE50104042D1

    公开(公告)日:2004-11-11

    申请号:DE50104042

    申请日:2001-11-29

    Applicant: BASF AG

    Abstract: A process is provided for reducing the content of a monounsaturated aliphatic amine (III) in a mixture (IV) containing an aminonitrile (I) or a diamine (II), or mixtures thereof, and the amine (III), whereina) the mixture (IV) is reacted with an anionic nucleophile (V),which contains a nucleophilic atom selected from the group comprising oxygen, nitrogen and sulfur,which is capable of taking up an H ion to form an acid with a pKa ranging from 7 to 11, measured in water at 25° C., andwhich has a relative nucleophilicity, measured in methyl perchlorate/methanol at 25° C.,ranging from 3.4 to 4.7 when oxygen is the nucleophilic atom,ranging from 4.5 to 5.8 when nitrogen is the nucleophilic atom, andranging from 5.5 to 6.8 when sulfur is the nucleophilic atom,in an amount ranging from 0.01 to 10 mol per mole of amine (III) in the mixture (IV), to give a mixture (VI), andb) the aminonitrile (I) or the diamine (II), or mixtures thereof, are distilled from the mixture (VI) at a temperature ranging from 50 to 170° C. and a pressure ranging from 0.5 to 100 kPa.

    100.
    发明专利
    未知

    公开(公告)号:AT278662T

    公开(公告)日:2004-10-15

    申请号:AT01984785

    申请日:2001-11-29

    Applicant: BASF AG

    Abstract: A process is provided for reducing the content of a monounsaturated aliphatic amine (III) in a mixture (IV) containing an aminonitrile (I) or a diamine (II), or mixtures thereof, and the amine (III), whereina) the mixture (IV) is reacted with an anionic nucleophile (V),which contains a nucleophilic atom selected from the group comprising oxygen, nitrogen and sulfur,which is capable of taking up an H ion to form an acid with a pKa ranging from 7 to 11, measured in water at 25° C., andwhich has a relative nucleophilicity, measured in methyl perchlorate/methanol at 25° C.,ranging from 3.4 to 4.7 when oxygen is the nucleophilic atom,ranging from 4.5 to 5.8 when nitrogen is the nucleophilic atom, andranging from 5.5 to 6.8 when sulfur is the nucleophilic atom,in an amount ranging from 0.01 to 10 mol per mole of amine (III) in the mixture (IV), to give a mixture (VI), andb) the aminonitrile (I) or the diamine (II), or mixtures thereof, are distilled from the mixture (VI) at a temperature ranging from 50 to 170° C. and a pressure ranging from 0.5 to 100 kPa.

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