Use of pyrimido[5,4-g]pteridines as shading component in color filter colorant compositions

US7731791B2 · kind B2 · utility

Assignee

• Ciba Specialty Chemicals Corporation · US

Inventors

• Takashi Deno · Nishinomiya, JP
• Thomas Eichenberger · Basel, CH
• Joachim Voigt · Weil am Rhein, DE

Key dates

• Filing date: Sep 21, 2005
• Grant date: Jun 8, 2010
• Expiry date: May 27, 2026

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B5/223
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to the field of color filters and LCDs. More specifically, the invention relates to a colorant composition for making color filters comprising pyrimido[5,4-g]pteridine derivatives of formula (I) wherein A1, A2, A3, and A4 are each independently of the others —NR1R2, wherein R1 and R2 are each independently of the others hydrogen, CrC8alkyl, —CO—C1-C8alkyl, —CO—Ce—Cuaryl, —COO—C1-C8alkyl, —COO—Ce—CMaryl, —CONH-d-Cβalkyl or —CONH—Ce-CMaryl, Or A1, A2, A3, and A4 are each independently of the others —OH, —SH, hydrogen, CrC8alkyl, CrC8alkoxy, or C6-C14aryl or —O—C6-C14aryl each unsubstituted or mono- or poly-substituted by halogen, nitro, cyano, —OR10, —SR10, —NR10R11, —CONR10R11, —COOR10, —SO2R10, —SO2NR10R11, —SO3R10, —NR11COR10 or by —NR11COOR10, wherein R10 and R11 are each independently of the others hydrogen, CrC8alkyl, C5-C12cycloalkyl or C2-C8-alkenyl; and to their use for color filter production and to color filters comprising said pyrimido[5,4-g]pteridine derivatives of formula (I).