Decomposition-resistant polyamide and method for the production thereof
AssigneeEms-Chemie AG
InventorEduard Schmid
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Abstract
The invention relates to a decomposition-resistant polyamide which is produced by means of anionic polymerisation of at least one lactam in the presence of at least one basic catalyst and optionally at least one activator, a deactivator consisting of a proton donor and an amine being added following the completed polymerization in the melted state.
Claims45
Degradation-resistant polyamide producible by anionic polymerisation of at least one lactam in the presence of at least one basic catalyst and if necessary at least one activator, with addition of a desactivator after completed polymerisation in the melt state, wherein the desactivator comprises a proton donor and an amine.
Method for continuous production of a degradation-resistant polyamide starting from the resulting polylactam comprising at least one lactam with addition of at least one basic catalyst and if necessary of at least one activator by means of a polymerisation at a temperature between 140 and 320° C., wherein a proton donor and an amine is added to the resulting polylactam in the melted aggregate state as desactivator.
Method for processing polyamide or the polymer blend thereof, which was produced by anionic polymerisation of lactam in the presence of at least one basic catalyst and if necessary at least one activator, in which method the polyamide or the polymer blend thereof is melted and, before further processing, a proton donor and an amine is added to the melt in the molten state as desactivator.
Dependencies are inferred from the claim text.