Process for acid hydrolysis of pure polylaurolactam

US12351538B2 · kind B2 · utility

Assignee

• Evonik Operations GmbH · DE

Inventors

• Alexander Richter · Johannesweg, DE
• Christian Nörnberg · Hamburg, DE
• Norbert Kern · Haltern, DE
• Florian Hermes · Haltern am See, DE
• Franz-Erich Baumann · Schneverdingen, DE
• Martin Roos · Oestrich-Winkel, DE
• Daniel Demicoli · Essen, DE

Key dates

• Filing date: Sep 14, 2021
• Grant date: Jul 8, 2025
• Expiry date: Sep 13, 2042

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02W30/62
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

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.