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US 12,351,538 B2Granted
Process for acid hydrolysis of pure polylaurolactam
AssigneeEvonik Operations GmbH
InventorsAlexander Richter, Christian Nörnberg, Norbert Kern, Florian Hermes, Franz-Erich Baumann, Martin Roos, Daniel Demicoli
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Abstract
An improved process can be used for the acid hydrolysis of polylaurolactam with sulfuric acid. An especially suitable starting material is polylaurolactam which is intended for recycling and which is characterized by a low laurolactam content.
Claims10
A process for hydrolysis of polylaurolactam, the process comprising:
- cleaving the polylaurolactam with sulfuric acid at a temperature of from 125° C. to 190° C., to give o-aminolauric acid.
Dependencies are inferred from the claim text.