Patent · US Expired

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

US6899824B2 · kind B2 · utility

11Cited by

5References

11Claims

0Family size

Assignee

BASF SE

Inventors

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

Key dates

Filing date	Dec 24, 2003
Grant date	May 31, 2005
Priority date	—
Expiry date	Dec 24, 2023

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K2323/06
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A process for printing or coating a substrate with a liquid-crystalline composition and at least one non-liquid-crystalline print or coating as a multilayer and a substrate produced by this process is described. The liquid-crystalline composition contains at least one compound having two polymerizable groups and at least one compound having only one polymerizable group, and optional further additives. The non-liquid-crystalline print or coating contains one or more IR- or UV-absorbent or fluorescent dye or pigment. The process and the printed substrate are useful in producing counterfeiting-proof marking of articles.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.