Multilayered article based ou polyamides.

摘要

The invention relates to the use of thermocurable reaction resin mixtures of polyisocyanates (a), polyepoxides (b) and reaction inhibitors (c), thermoactivatable reaction catalysts (d) and, if desired, assistants and additives (e) for producing polyamide-based multilayer mouldings having a cured thermoset layer by thermal curing of the reaction resin mixtures onto the polyamide mouldings. The reaction resin mixtures are preferably applied to polyamide mouldings, still hot from the heat of polymerisation, produced by rotational, extrusion or centrifugal moulding by the anionic lactam polymerisation process, eg. as an internal coating on rotation-moulded polyamide tubes. The invention furthermore relates to corresponding thermoset-coated multilayer mouldings produced by the above processes.