Use of a pigment composition comprising mixed crystals based on CI pigment yellow 74

US7416596B2 · kind B2 · utility

Assignee

• Clariant Produkte (Deutschland) GmbH · DE

Inventors

• Karl-Heinz Schweikart · Eschborn, DE
• David Blum · Bad Soden, DE
• Felix Grimm · Königsee, DE
• Martin Schmidt · Frankfurt am Main, DE
• Josef Geisenberger · Pocking, DE

Key dates

• Filing date: Feb 11, 2005
• Grant date: Aug 26, 2008
• Expiry date: Feb 11, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D11/34
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to the use of a pigment composition containing between 86.0 and 99.9 total mol % of C.I. Pigment Yellow 74 molecules and between 14.0 and 0.1 total mol % of at least one monoazo pigment of the formula (1)wherein R1 represents Cl, OCH3, OH3 or NO2 as a coloring agent for pigmenting ink-jet inks and color filters.