中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

84 records (took 0.026 seconds)

    17.
    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).

    EXTRACCION DE COMPLEJOS DE NIQUEL (0) A PARTIR DE MEZCLAS DE NITRILOS CON BAJA FORMACION DE MULM.
    19.
    发明专利
    EXTRACCION DE COMPLEJOS DE NIQUEL (0) A PARTIR DE MEZCLAS DE NITRILOS CON BAJA FORMACION DE MULM. 未知

    公开(公告)号：ES2306233T3

    公开(公告)日：2008-11-01

    申请号：ES05798767

    申请日：2005-10-12

    Applicant: BASF SE

    Inventor： DECKERT PETRA ,  BASSLER PETER ,  BARTSCH MICHAEL ,  HADERLEIN GERD ,  LUYKEN HERMANN ,  SCHEIDEL JENS

    IPC: B01J31/40 ,  B01D11/04 ,  B01J31/18 ,  B01J31/24 ,  B01J38/56 ,  C07C253/10 ,  C07C253/32

    Abstract: Procedimiento para la separación por extracción de catalizadores disueltos, homogéneos, a partir de una descarga de la reacción de una hidrocianuración de mononitrilos insaturados para dar dinitrilos, mediante extracción con ayuda de un hidrocarburo K, caracterizado porque a) se concentra por evaporación la descarga de la reacción como paso previo a la etapa b) mediante destilación a presiones comprendidas entre 0,1 y 5.000 mbares y a temperaturas comprendidas entre 10 y 150ºC, b) se aporta un hidrocarburo K a la descarga de la reacción, concentrada por evaporación, con lo que se obtiene una corriente I, y c) se alimenta la corriente I, sin separación previa de las fases líquidas, en un dispositivo de extracción y se extrae a una temperatura T con el hidrocarburo K, obteniéndose una corriente II que contiene el hidrocarburo K enriquecido con el catalizador, y una corriente III pobre en catalizador.

    20.
    发明专利
    未知

    公开(公告)号：DE502005004577D1

    公开(公告)日：2008-08-14

    申请号：DE502005004577

    申请日：2005-01-27

    Applicant: BASF SE

    Inventor： JUNGKAMP TIM ,  BAUMANN ROBERT ,  BARTSCH MICHAEL ,  HADERLEIN GERD ,  LUYKEN HERMANN ,  SCHEIDEL JENS

    IPC: C07C253/10 ,  C07C255/04

    Abstract: An adiponitrile/methylglutaronitrile preparation process includes distilling a reaction stream to obtain stream 3 depleted in pentenenitriles (bottom product) and stream 4 enriched in pentenenitriles (top product); extracting stream 3 obtaining stream 6 enriched with extractant (top product) and stream 7 depleted in extractant (bottom product); distilling stream 6 obtaining stream 8 comprising the catalyst (bottom product) and stream 9 comprising the extractant (top product); distilling stream 7 obtaining stream 10 (bottom product) and stream 11 comprising the extractant (top product); distilling stream 10 obtaining stream 12 comprising catalyst degradation products, at least one promotor, adiponitrile and methylglutaronitrile (bottom product) and stream 13 comprising pentenenitriles (top product); distilling stream 12 obtaining stream 14 comprising catalyst degradation products and the promotor(s) (bottom product) and stream 15 comprising adiponitrile and methylglutaronitrile (top product); distilling stream 15 obtaining stream 16 comprising adiponitrile (bottom product) and stream 17 comprising methylglutaronitrile (top product).

Patent Agency Ranking