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    31.
    发明专利
    未知

    公开(公告)号：DE59906071D1

    公开(公告)日：2003-07-31

    申请号：DE59906071

    申请日：1999-04-15

    Applicant: BASF AG

    Inventor： AUER HEINZ ,  CIPRIAN JUERGEN ,  FRANZ LOTHAR ,  FRANZISCHKA WOLFGANG ,  IFFLAND GABRIELE ,  WECK ALEXANDER ,  WEINLE WERNER

    IPC: C08G65/20 ,  C08G65/30 ,  C08G65/32 ,  C08G65/331

    Abstract: The present invention relates to a process for preparing hydroxyl-containing polymers, in particular for preparing polytetrahydrofuran with terminal hydroxyl groups, from the corresponding acyloxy-containing polymers by transesterification with alcohols in the presence of an alkali metal- or alkaline earth metal-containing catalyst, which entails the appropriate acyloxy-containing polymer being introduced together with the alcohol and the catalyst into a first prereactor (I) and converted therein at least partly to the hydroxyl-containing polymer, and the reaction solution being fed into the upper zone (IIa) of a distillation column (II) into whose lower zone (IIb) alcohol in vapor phase is additionally fed. This involves a phase exchange at the coherent and the disperse phase at the transition from the prereactor to the distillation column. Preferably, in addition to the first prereactor, a further 3 prereactors are used which serve as holdup reactors.

    33.
    发明专利
    未知

    公开(公告)号：DE19819586A1

    公开(公告)日：1999-11-04

    申请号：DE19819586

    申请日：1998-04-30

    Applicant: BASF AG

    Inventor： BIRNBACH STEFAN ,  DOCKNER TONI ,  MOHR JUERGEN ,  BENFER REGINA ,  BIEG WALTER ,  PETERS JARREN ,  RUGE BERND ,  WEINLE WERNER ,  ZEHNER PETER

    IPC: C07D317/36 ,  C07D317/38 ,  C07D317/44

    Abstract: The invention relates to a method for continually producing 1,3-dioxolan-2-ones such as ethylene carbonate or propylene carbonate by reacting a corresponding oxirane with carbon dioxide in liquid phase in the presence of a catalyst. The reaction is carried out in a two-part reactor. In the first part of the reactor, the reaction is carried out with back-mixing until a conversion rate of oxirane II of at least 80 % has been reached. In the second part, the reaction is completed under conditions without back-mixing, the carbon dioxide being guided to the oxirane II in a counterflow throughout the reactor.

    37.
    发明专利
    未知

    公开(公告)号：FI56204B

    公开(公告)日：1979-08-31

    申请号：FI53773

    申请日：1973-02-22

    Applicant: BASF AG

    Inventor： KUERTEN HERIBERT ,  NAGEL OTTO ,  SINN RICHARD ,  WEINLE WERNER ,  ENGLER PETER

    IPC: D01D5/11 ,  D01D5/26 ,  D01D5/40 ,  D01F11/04

    Abstract: 1413356 Fibrids of thermoplastic materials BADISCHE ANILIN- & SODA-FABRIK AG 23 Feb 1973 [25 Feb 1972] 8938/73 Heading B5B Fibrids (i.e. short fibres) of a thermoplastics material are made by introducing a high-speed propulsive jet and a slower-moving stream of a liquid co-currently into a mixing tube arranged coaxially with the jet, whereby a shear gradient is set up in the mixing tube between the highspeed jet and the slower-moving liquid stream, and feeding the molten thermoplastics material through a die into the region of the shear gradient, whereby the thermoplastics material is broken up into fibres by the action of shear stresses within the region of the shear-gradient. Specified thermoplastics materials include polyethylene, polypropylene and their waxes and extended waxes, polyamides, polyesters, polyvinyl chloride and polystyrene. In Fig. 1, the apparatus is enclosed in container 4. Melt is supplied via 6 to outlet orifice 2; the spinning medium, suitably water, is supplied via 5 to the outlet orifice 1 of the propulsive jet; 3 is the impulse exchange chamber or mixing tube. If the relatively slow-moving stream of liquid entrained from the container is replaced by liquid coming from a pump, the container may be dispensed with, as in Fig. 2, where 7 is the feed-line for the slow-moving medium (water) spinning being effected in tube 3 which acts as impulse exchange chamber.

    REACTOR FOR GAS/LIQUID OR GAS/LIQUID/SOLID REACTIONS
    38.
    发明专利
    REACTOR FOR GAS/LIQUID OR GAS/LIQUID/SOLID REACTIONS 未知

    公开(公告)号：MY138099A

    公开(公告)日：2009-04-30

    申请号：MYPI20021542

    申请日：2002-04-26

    Applicant: BASF AG

    Inventor： BENFER REGINA DR ,  NILLES MICHAEL DR ,  WEINLE WERNER ,  ZEHNER PETER DR

    IPC: C07D319/06 ,  B01D3/00 ,  B01D3/20 ,  B01J8/04 ,  B01J8/18 ,  B01J8/22 ,  B01J8/34 ,  B01J10/00 ,  B01J19/24 ,  B01J47/00 ,  C07C68/04 ,  C07C69/96

    Abstract: A REACTOR (1) HAVING A VERTICAL LONGITUDINAL AXIS AND AN INLET (2) FOR A LIQUID OR LIQUID/SOLID FEED STREAM IN THE UPPER REGION OF THE REACTOR AND AN INLET (3) FOR A GASEOUS STREAM IN THE LOWER REGION OF THE REACTOR (1), CHARACTERIZED BY - AT LEAST TWO CHAMBERS (4) ARRANGED ABOVE ONE ANOTHER IN THE LONGITUDINAL DIRECTION,WHERE - THE CHAMBERS (4) ARE SEPARATED FROM ONE ANOTHER BY LIQUID-TIGHT BOTTOM PLATES, - EACH CHAMBER IS CONNECTED VIA A LIQUID OVERFLOW (6) TO THE CHAMBER (4) LOCATEDIMMEDIATELY UNDERNEATH AND A LIQUID PRODUCT STREAM IS TAKEN OFF VIA THE LIQUID OVERFLOW (6) OF THE BOTTOMMOST CHAMBER (4), - THE GAS SPACE (7) ABOVE THE LIQUID SURFACE IN EACH CHAMBER (4) IS CONNECTED TO THECHAMBER (4) LOCATED IMMEDIATELY ABOVE IT BY ONE OR MORE GUIDE TUBES (8) WHICH OPENS (EACH OPEN) INTO A GAS DISTRIBUTOR (9) PROVIDED WITH OPENINGS FOR EXIT OF GASBELOW THE LIQUID SURFACE, - AND EACH CHAMBER IS PROVIDED WITH AT LEAST ONE GUIDE PLATE (12) WHICH IS ARRANGEDVERTICALLY AROUND EACH SIPHON LIKE GAS DISTRIBUTOR (9) AND WHOSE UPPER END IS BELOW THE LIQUID SURFACE AND WHOSE LOWER END IS ABOVE THE LIQUID - TIGHT BOTTOMPLATE (5) OF THE CHAMBER (4) AND WHICH DIVIDES EACH CHAMBER (4) INTO ONE OR MORESPACES INTO WHICH GAS FLOWS (13) AND ONE OR MORE SPACES INTO WHICH GAS DOESNOT FLOW (14), IS USED FOR GAS/LIQUID OR GAS/LIQUID/SOLID REACTIONS. (FIGURE 1)

    40.
    发明专利
    未知

    公开(公告)号：DE502004001613D1

    公开(公告)日：2006-11-09

    申请号：DE502004001613

    申请日：2004-03-19

    Applicant: BASF AG

    Inventor： DEININGER JUERGEN ,  DEMETER JUERGEN ,  KORY GAD ,  SOETJE OLIVER ,  WINTERLING HELMUT ,  ZEHNER PETER ,  HEEGER MICHAEL ,  GANN MARTIN ,  POLT AXEL ,  TREULING ULRICH ,  WEINLE WERNER

    IPC: C08G69/00 ,  C08G69/04 ,  C08G69/16 ,  C08G69/28

    Abstract: Polyamides, oligomers thereof or mixtures thereof, if required with further reaction products, are prepared by reacting aminonitriles or dinitriles and diamines or a mixture containing aminonitrile, dinitrile and diamine, and, if required, further polyamide-forming monomers and/oligomers with water in a reactor ( 1 ) having a vertically oriented longitudinal axis, by a process in which, in the reactor ( 1 ), the reaction product is removed from the bottom and ammonia formed and any further low molecular weight compounds formed and water are taken off via the top ( 2 ), wherein the reactor ( 1 ) has at least two chambers ( 4 ) arranged one on top of the other in the longitudinal direction, the chambers ( 4 ) being separated from one another by liquid-tight trays ( 5 ), each chamber ( 4 ) being connected by a liquid overflow ( 6 ) to the chamber ( 4 ) directly underneath and a liquid product stream being taken off by the liquid overflow ( 6 ) of the lowermost chamber ( 4 ), the gas space ( 7 ) above the liquid level in each chamber ( 4 ) being connected to the chamber ( 4 ) arranged directly above in each case by one or more conduit pipes ( 8 ) which in each case opens or open into a gas distributor ( 9 ) having orifices ( 11 ) for gas exit below the liquid level, and comprising in each case at least one baffle plate ( 12 ) which is arranged vertically around each gas distributor ( 9 ) and whose upper end terminates below the liquid level and whose lower end terminates above the liquid-tight tray ( 5 ) of the chamber ( 4 ) and which separates each chamber ( 4 ) into one or more gassed ( 13 ) and into one or more ungassed ( 14 ) spaces.

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