Isomer-enriched 3-caranlactams and polyamides based thereon with high optical purity and adjustable crystallinity for high-performance applications

US12152107B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Paul Stockmann · Stuttgart, DE
• Harald Strittmatter · Stuttgart, DE
• Volker Sieber · Dresden, DE
• Claudia Falcke · Stuttgart, DE

Key dates

• Filing date: Mar 1, 2019
• Grant date: Nov 26, 2024
• Expiry date: Mar 24, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2602/20
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for the preparation of an isomer-enriched mixture of 3S- and 3R-caranone from 3-carane epoxide, a 3S-caranone obtained therefrom, a process for the production of 3S-caranlactam from 3-carene, a process for the production of 3R-caranlactam from 3-carene, a 3S-caranoxime, a 3S-caranlactam, a 3S-polycaranamide, a 3R-polycaranamide, a 3S/3R-co-polycaranamide, a 3S-caranlactam-laurolactam co-polycaranamide, a 3R-caranlactam-laurolactam co-polycaranamide, a 3S-caranlactam-3R-caranlactam-laurolactam co-polycaranamide, a 3S-caranlactam-caprolactam co-polycaranamide, a 3R-caranlactam-caprolactam co-polycaranamide, as well as a 3S/3R-caranlactam-caprolactam co-polycaranamide.