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AssigneeBASF SE
InventorsJürgen Deininger, Jürgen Demeter, Gad Kory, Oliver Sötje, Helmut Winterling, Peter Zehner, Michael Heeger, Martin Gann, Axel Polt, Ulrich Treuling, Werner Weinle
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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.
A process for the preparation of polyamides, oligomers thereof or mixtures thereof, by reaction of aminonitriles or dinitriles and diamines or a mixture comprising aminonitrile, dinitrile and diamine, with water in a reactor having a vertically oriented longitudinal axis, and where the reaction product is discharged from the bottom of the reactor and ammonia formed and any further low molecular weight compounds formed and water are removed from the top, of the reactor wherein the reactor comrnses
A process for the preparation of polyamides, oligomers thereof or mixtures thereof, by reaction of aminonitriles or dinitriles and diamines or a mixture comprising aminonitrile, dinitrile and diamine, with water in a reactor, wherein the reactor comprises:
Dependencies are inferred from the claim text.