Mixture comprising pigments having a liquid-crystalline structure with a chiral phase and its use

US6224664A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Christoph Muller-Rees · Pullach, DE
• Eckhard Hanelt · Geltendorf, DE
• Franz-Heinrich Kreuzer · Martinsried, DE
• Jurgen Kupfer · Berlin, DE
• Horst Leigeber · Oberhaching, DE

Key dates

• Filing date: Jun 18, 1998
• Grant date: May 1, 2001
• Expiry date: Jun 18, 2018

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41M3/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to mixtures containing pigments which comprise oriented three-dimensionally crosslinked substances having a liquid-crystalline structure with a chiral phase, and to the use of such mixtures. Pigment and matrix are matched to one another in such a way that on application of the mixture at different temperatures to a substrate, the lowest application temperature and highest application temperature differing by at least 10.degree. C. and by not more than 150.degree. C., there are no visually perceptible color differences of the pigmented paint on the substrate after drying.