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    12.
    发明专利
    未知

    公开(公告)号：DE50114970D1

    公开(公告)日：2009-08-20

    申请号：DE50114970

    申请日：2001-04-30

    Applicant: BASF SE

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

    IPC: C07D201/08 ,  C07D223/10 ,  C07B61/00 ,  C07D207/263 ,  C07D211/76 ,  C07D225/02

    Abstract: The invention relates to a method for producing cyclic lactams of the formula (II), wherein n and m may each represent 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, R and R represent C1-C6 alkyl, C5-C7 cycloalkyl or C6-C12 aryl groups, by reacting a compound of the formula (I), wherein R , R , m and n have the meaning indicated above, and R represents nitrile groups, carboxylic acid amide groups and carboxylic acid groups, with water vapor in the gaseous phase. The inventive method is further characterized in that a) the compound (I) is reacted with water vapor in the gaseous phase, adding an organic diluent (III) before or after the reaction, which diluent has a miscibility gap under certain quantitative, pressure and temperature conditions, said reaction resulting in a mixture (IV) that contains a lactam (II), b) adjusting the mixture (IV) before or after the removal of ammonia to quantitative, pressure and temperature conditions under which the diluent (III) and water are present in a liquid form and have a miscibility gap, and obtaining a two-phase system consisting of a phase (V) that has a higher proportion of diluent (III) than water, and a phase (VI) that has a higher proportion of water than diluent (III), c) separating phase (V) from phase (VI) and, d) removing from phase (V) the diluent (III) and optionally by-products selected from the group of the low-boilers, high-boilers and unreacted compound (I), and obtaining a lactam (II).

    Proceso para la producción de isocianatos
    13.
    发明专利
    Proceso para la producción de isocianatos 未知

    公开(公告)号：ES2989804T3

    公开(公告)日：2024-11-27

    申请号：ES21766459

    申请日：2021-08-23

    Applicant: BASF SE

    Inventor： JOSCH JAN PABLO ,  HINRICHS MATTHIAS ,  FERBITZ JENS ,  THIELE KAI ,  MATTKE TORSTEN ,  MAIXNER STEFAN

    IPC: C07C263/10 ,  C07C265/14 ,  C07C269/04 ,  C07C271/04

    Abstract: La invención se refiere a un proceso para producir isocianatos mediante la reacción de las aminas correspondientes con fosgeno en la fase líquida, que comprende: (a) mezclar una corriente de alimentación que comprende amina, una corriente de alimentación que comprende fosgeno y opcionalmente un disolvente inerte; (b) hacer reaccionar la amina con fosgeno en una primera sección de reacción para obtener una mezcla de reacción intermedia que comprende isocianato, cloruros de carbamoilo, clorhidratos de amina y fosgeno sin reaccionar; (c) escindir los cloruros de carbamoilo y eliminar el fosgeno de la mezcla de reacción intermedia en una segunda sección de reacción para obtener un producto crudo que comprende isocianato, (d) opcionalmente procesar el producto crudo; en donde la reacción (b) se lleva a cabo de tal manera que la mezcla de reacción intermedia comprende de 1,7 a 5 % en moles de clorhidratos de amina sólidos en base a la cantidad molar de amina alimentada al proceso. (Traducción automática con Google Translate, sin valor legal)

    16.
    发明专利
    未知

    公开(公告)号：AT550317T

    公开(公告)日：2012-04-15

    申请号：AT09781542

    申请日：2009-08-06

    Applicant: BASF SE

    Inventor： PENZEL ULRICH ,  MATTKE TORSTEN ,  WOELFERT ANDREAS ,  JACOBS JOHANNES ,  CHENG TSUNG-CHIEH ,  HEINEN KERSTIN ,  STROEFER ECKHARD ,  MAIXNER STEFAN ,  MACKENROTH WOLFGANG ,  TRAGUT CHRISTIAN ,  THIELE KAI ,  WON MYUNG UN

    IPC: C07C263/10

    Abstract: The invention relates to a process for preparing isocyanates by reacting the corresponding amines with phosgene in the liquid phase, if appropriate in the presence of at least one inert medium, in which the amine and the phosgene are first mixed in a mixing chamber (1) to give a reaction mixture and the reaction mixture is fed to a reactor, the amine being added through an orifice (3) arranged coaxially to the mixing chamber (1) and the phosgene being added through feed orifices (5) in at least two planes (7, 9) arranged at right angles to the axis (11) of the mixing chamber (1), or the phosgene being added through the orifice (3) arranged coaxially to the mixing chamber and the amine through the feed orifices (5) in at least two planes (7, 9) arranged at right angles to the axis (11) of the mixing chamber (1). At least one plane (9) is arranged upstream and at least one plane (7) downstream of the orifice (3) arranged coaxially to the mixing chamber (1) in main flow direction of the reaction mixture. The mean residence time of the reaction mixture in the mixing chamber (1) is not more than 20 ms.

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