Forgery prevention labels for high-temperature applications

US11285708B2 · kind B2 · utility

Assignees

• Röhm GmbH · DE
• Roehm America LLC · US

Inventors

• Ghirmay Seyoum · Egelsbach, DE
• Markus Parusel · Messel, DE
• Kim Struwe · Frankfurt am Main, DE
• Anderson Costa · Pensacola, US
• Claude Guenanten · Darmstadt, DE
• Helmut Haring · Otzberg, DE

Key dates

• Filing date: Feb 7, 2020
• Grant date: Mar 29, 2022
• Expiry date: Feb 7, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2333/26
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Heat resistant brittle films can be made from impact-modified poly(meth)acrylimide, and forgery prevention labels can contain the heat resistant brittle films. The films can be advantageously prepared by extrusion and, depending on the desired purpose, can be designed to be transparent, translucent, or entirely non-transparent, e.g., white. Ideally, the brittle films and the forgery prevention labels containing the brittle films have no intended break points such as slits, perforation, etc.