Laser-markable plastics

US6727308B2 · kind B2 · utility

Assignee

• MERCK PATENT GESELLSCHAFT MIT BESHRANK TER HAFTUNG · DE

Inventors

• Helge Kniess · Roßdorf, DE
• Dieter Heinz · Heppenheim, DE
• Reiner Delp · Darmstadt, DE
• Gerhard Pfaff · Mainburg, DE
• Matthias Kuntz · Seeheim-Jugenheim, DE

Key dates

• Filing date: Apr 13, 2001
• Grant date: Apr 27, 2004
• Expiry date: May 9, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09C2210/60
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to laser-markable plastics of which a feature is that they comprise as dopantat least one metal powder and/or semimetal powder selected from the group consisting of aluminum, boron, titanium, magnesium, copper, tin, silicon and zinc andone or more effect pigments based on phyllosilicates.