Organic pigments for colour filters

US8535870B2 · kind B2 · utility

Assignee

• LANXESS Deutschland GmbH · DE

Inventors

• Ulrich Feldhues · Bensberg, DE
• Frank Linke · Recklinghausen, DE
• Ronald Gobel · Leverkusen, DE
• Dirk Pfuetzenreuter · Burscheid, DE
• Udo Herrmann · Dormagen, DE

Key dates

• Filing date: Dec 7, 2011
• Grant date: Sep 17, 2013
• Expiry date: Dec 7, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G03F7/0007
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Use of pigments of the formula (I)containing melamine as guest compound and having a dispersion harshness of more than 250 as pigments for color filters for liquid-crystal displays.