Liquid-crystalline composition for printing inks, coatings and counterfeit-proof marking of articles

US6733689B1 · kind B1 · utility

Assignee

• BASF Drucksysteme GmbH · DE

Inventors

• Frank Meyer · Mannheim, DE
• Hiroki Ishida · Gifu, JP
• Peter Schuhmacher · Mannheim, DE
• Horst Neumann · Ludwigshafen, DE

Key dates

• Filing date: Aug 10, 2001
• Grant date: May 11, 2004
• Expiry date: Aug 10, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2323/06
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A liquid-crystalline composition contains, as components, a liquid-crystalline mixture containing at least one compound having two polymerizable groups and at least one compound having only one polymerizable group, and optional further additives. The liquid crystalline composition can be used for printing or coating substrates, in electro-optical components, for counterfeiting-proof marking of articles and for the production of films or coatings which selectively reflect light in the wavelength range from 250 to 1300 nm.