中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

67 records (took 0.018 seconds)

    51.
    发明专利
    未知

    公开(公告)号：DE102004003003A1

    公开(公告)日：2005-09-01

    申请号：DE102004003003

    申请日：2004-01-20

    Applicant: BASF AG

    Inventor： GOEBBEL HANS-GEORG ,  BASLER PETER ,  TELES JOAQUIM HENRIQUE ,  RUDOLF PETER

    IPC: B01J8/06 ,  B01J19/24 ,  F28D7/02 ,  F28F1/02 ,  F28F1/08 ,  C07D301/12

    Abstract: Process and apparatus for the continuous preparation of a chemical compound in at least one reactor, where at least one of the reactors is a shell-and-tube reactor which has a shell and at least one internal tube located within the shell, wherein at least one of the internal tubes has, at least in part, a noncircular cross section and a helical configuration in the region in which it is surrounded by the shell.

    52.
    发明专利
    未知

    公开(公告)号：DE10317520A1

    公开(公告)日：2004-11-04

    申请号：DE10317520

    申请日：2003-04-16

    Applicant: BASF AG

    Inventor： GOEBBEL HANS-GEORG ,  BASLER PETER ,  TELES JOAQUIM HENRIQUE ,  RUDOLF PETER

    IPC: C07D301/12 ,  C07D303/04 ,  C07B33/00

    Abstract: Process for preparing an alkene oxide, which comprises at least the steps (i), (ii) and (v): (i) providing a stream S1 comprising compressed, liquid alkene; (ii) depressurizing at least part of the stream S1 with absorption of heat and with at least partial vaporization of the liquid alkene; (v) reacting the alkene obtained in (ii) with a hydroperoxide in the presence of at least one solvent and at least one catalyst to give a mixture comprising alkene oxide and the solvent or solvents.

    56.
    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).

    58.
    发明专利
    未知

    公开(公告)号：DE10135296A1

    公开(公告)日：2003-01-30

    申请号：DE10135296

    申请日：2001-07-19

    Applicant: BASF AG

    Inventor： TELES JOAQUIM HENRIQUE ,  REHFINGER ALWIN ,  WENZEL ANNE ,  RUDOLF PETER ,  RIEBER NORBERT ,  BASLER PETER

    IPC: C07D301/12 ,  C07D301/19

    Abstract: The invention relates to a method for producing propylene oxide, comprising at least the following steps: (a) propene is reacted with a hydroperoxide in a solvent in the presence of a zeolite catalyst, in order to obtain a mixture (G0), said mixture (G0) containing propylene oxide, solvent, non-reacted propene, non-reacted hydroperoxide and oxygen; (b) the propylene oxide is separated from the mixture (G0) in such a way that a mixture (G1) is obtained which comprises non-reacted propene and oxygen; (c) the mixture (G1) is brought into contact with a liquid medium containing at least solvent, in order to obtain the mixtures (G2) and (G3), said mixture (G3) containing a part of the non-reacted propene and oxygen, and said mixture (G2) containing the solvent and the rest of the propene, the separated mixture (G3) of non-reacted propene and oxygen having a ratio of oxygen to propene which renders the mixture (G3) non-inflammable, and the mixture (G2) supplying at least one reaction between the propene and the hydroperoxide.

    60.
    发明专利
    未知

    公开(公告)号：DE10021193A1

    公开(公告)日：2001-11-08

    申请号：DE10021193

    申请日：2000-05-03

    Applicant: BASF AG

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

    IPC: C07D223/10 ,  C07B61/00 ,  C07D201/08 ,  C07D207/263 ,  C07D211/76 ,  C07D225/02 ,  C07D207/267 ,  C07D227/02

    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).

Patent Agency Ranking