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AssigneeBASF Aktiengesellscaft Patents, Trademarks and Licenses
InventorsJürgen Demeter, Oliver Sötje, Hans-Jürgen Bassler, Jürgen Deininger, Karl-Heinrich Klappert, Helmut Winterling
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An apparatus for making polyamides oligomers thereof mixtures thereof, the apparatus comprising a material selected from the group consisting of a) an austenitic steel comprising from 15 to 25% by weight of chromium, from 3 to 35% by weight of nickel and from 0 to 10% by weight of molybdenum, and iron, b) a duplex steel comprising from 20 to 30% by weight of chromium, from 3 to 10% by weight of nickel and from 0 to 5% by weight of molybdenum, and iron, and c) a nickel-based alloy comprising from 12 to 25% by weight of chromium and from 12 to 20% by weight of molybdenum, and nickel
A process for the preparation of polyamides, oligomers thereof or mixtures thereof, by reacting a reaction mixture comprising monomers containing —CN groups or —CONH2 groups in an apparatus, wherein the areas of the apparatus which are in contact with the reaction mixture comprise a material selected from the group consisting of
An apparatus for the preparation of polyamides, oligomers thereof or mixtures thereof, wherein areas of the apparatus which are in contact with the reaction mixture comprising monomers containing —CN groups or —CONH2 groups comprise a material selected from the group consisting of
Dependencies are inferred from the claim text.