Pigment dispersions with polymeric dispersants having pending chromophore groups

US8759441B2 · kind B2 · utility

Assignee

• AGFA GRAPHICS NV · BE

Inventors

• Johan Loccufier · Zwijnaarde, BE
• Wojciech Jaunky · Wesel, DE
• Geert Deroover · Lier, BE
• Lambertus Groenendaal · Sinaai, BE

Key dates

• Filing date: Jun 23, 2006
• Grant date: Jun 24, 2014
• Expiry date: Oct 25, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D11/326
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A pigment dispersion includes a color pigment and a polymeric dispersant having at least one pending chromophore group covalently bound to the polymeric backbone of the polymeric dispersant through a linking group, wherein the at least one pending chromophore group is a derivative from a color pigment selected from the group consisting of monoazo pigments, disazo pigments, β-naphtol pigments, naphtol AS pigments, azo pigment lakes, benzimidazolone pigments, disazo condensation pigments, metal complex pigments, isoindolinone pigments, isoindolinine pigments, phthalocyanine pigments, quinacridone pigments, diketopyrrolo-pyrrole pigments, thioindigo pigments, anthraquinone pigments, anthrapyrimidine pigments, indanthrone pigments, flavanthrone pigments, pyranthrone pigments, anthanthrone pigments, isoviolanthrone pigments, aluminum pigment lakes, dioxazine pigments, triarylcarbonium pigments, and quinophthalone pigments; the at least one pending chromophore group is a chromophore group occurring as a side group on the polymeric backbone and not a group in the polymeric backbone itself or occurring solely as an end group of the polymeric backbone; the linking group consists of all the …